diff --git a/pr/323/docs/help.html b/pr/323/docs/help.html index 2565ad385..99d8cb979 100644 --- a/pr/323/docs/help.html +++ b/pr/323/docs/help.html @@ -1 +1 @@ -Help

All

Rustdoc help

Back
\ No newline at end of file +Help

All

Rustdoc help

Back
\ No newline at end of file diff --git a/pr/323/docs/iroh_quinn/enum.ConnectionError.html b/pr/323/docs/iroh_quinn/enum.ConnectionError.html index f5f28f5ae..14c0186c2 100644 --- a/pr/323/docs/iroh_quinn/enum.ConnectionError.html +++ b/pr/323/docs/iroh_quinn/enum.ConnectionError.html @@ -1,4 +1,4 @@ -ConnectionError in iroh_quinn - Rust

ConnectionError

iroh_quinn

Enum ConnectionError 

Source 
pub enum ConnectionError {
+ConnectionError in iroh_quinn - Rust
ConnectionError
iroh_quinn
Enum ConnectionError 
Source 
pub enum ConnectionError {
     VersionMismatch,
     TransportError(Error),
     ConnectionClosed(ConnectionClose),
@@ -20,8 +20,8 @@ and §
LocallyClosed
The local application closed the connection

 
§
CidsExhausted
The connection could not be created because not enough of the CID space is available

 
Try using longer connection IDs.

-
Trait Implementations§
Source§
impl Clone for ConnectionError
Source§
fn clone(&self) -> ConnectionError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Display for ConnectionError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Error for ConnectionError
Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<Close> for ConnectionError
Source§
fn from(x: Close) -> ConnectionError
Converts to this type from the input type.
Source§
impl From<CloseReason> for ConnectionError
Source§
fn from(value: CloseReason) -> ConnectionError
Converts to this type from the input type.
Source§
impl From<ConnectionError> for ReadError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for ResetError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for SendDatagramError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for StoppedError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for WriteError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for ConnectionError
Source§
fn from(source: Error) -> ConnectionError
Converts to this type from the input type.
Source§
impl PartialEq for ConnectionError
Source§
fn eq(&self, other: &ConnectionError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for ConnectionError
Source§
impl StructuralPartialEq for ConnectionError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ConnectionError
Source§
fn clone(&self) -> ConnectionError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Display for ConnectionError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Error for ConnectionError
Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<Close> for ConnectionError
Source§
fn from(x: Close) -> ConnectionError
Converts to this type from the input type.
Source§
impl From<CloseReason> for ConnectionError
Source§
fn from(value: CloseReason) -> ConnectionError
Converts to this type from the input type.
Source§
impl From<ConnectionError> for ReadError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for ResetError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for SendDatagramError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for StoppedError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<ConnectionError> for WriteError
Source§
fn from(source: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for ConnectionError
Source§
fn from(source: Error) -> ConnectionError
Converts to this type from the input type.
Source§
impl PartialEq for ConnectionError
Source§
fn eq(&self, other: &ConnectionError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for ConnectionError
Source§
impl StructuralPartialEq for ConnectionError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn/enum.FrameType.html b/pr/323/docs/iroh_quinn/enum.FrameType.html
index c28f19a5c..007d96e36 100644
--- a/pr/323/docs/iroh_quinn/enum.FrameType.html
+++ b/pr/323/docs/iroh_quinn/enum.FrameType.html
@@ -1,4 +1,4 @@
-FrameType in iroh_quinn - Rust
FrameType
iroh_quinn
Enum FrameType 
Source 
pub enum FrameType {
+FrameType in iroh_quinn - Rust
FrameType
iroh_quinn
Enum FrameType 
Source 
pub enum FrameType {
 
Show 44 variants    Padding,
     Ping,
     Ack,
@@ -43,10 +43,10 @@
     ReachOutAtIpv4,
     ReachOutAtIpv6,
     RemoveAddress,
-
}
Variants§
§
Padding
§
Ping
§
Ack
§
AckEcn
§
ResetStream
§
StopSending
§
Crypto
§
NewToken
§
Stream(StreamInfo)
§
MaxData
§
MaxStreamData
§
MaxStreamsBidi
§
MaxStreamsUni
§
DataBlocked
§
StreamDataBlocked
§
StreamsBlockedBidi
§
StreamsBlockedUni
§
NewConnectionId
§
RetireConnectionId
§
PathChallenge
§
PathResponse
§
ConnectionClose
§
ApplicationClose
§
HandshakeDone
§
AckFrequency
§
ImmediateAck
§
Datagram(DatagramInfo)
§
ObservedIpv4Addr
§
ObservedIpv6Addr
§
PathAck
§
PathAckEcn
§
PathAbandon
§
PathStatusBackup
§
PathStatusAvailable
§
PathNewConnectionId
§
PathRetireConnectionId
§
MaxPathId
§
PathsBlocked
§
PathCidsBlocked
§
AddIpv4Address
§
AddIpv6Address
§
ReachOutAtIpv4
§
ReachOutAtIpv6
§
RemoveAddress
Trait Implementations§
Source§
impl Clone for FrameType
Source§
fn clone(&self) -> FrameType
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Decodable for FrameType
Source§
fn decode<B>(buf: &mut B) -> Result<FrameType, UnexpectedEnd>
where
-    B: Buf,
Decode a Self from the provided buffer, if the buffer is large enough
Source§
impl Display for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Encodable for FrameType
Source§
fn encode<B>(&self, buf: &mut B)
where
-    B: BufMut,
Append the encoding of self to the provided buffer.
Source§
impl PartialEq for FrameType
Source§
fn eq(&self, other: &FrameType) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl TryFrom<u64> for FrameType
Source§
type Error = InvalidFrameId
The type returned in the event of a conversion error.
Source§
fn try_from(value: u64) -> Result<FrameType, <FrameType as TryFrom<u64>>::Error>
Performs the conversion.
Source§
impl Copy for FrameType
Source§
impl Eq for FrameType
Source§
impl StructuralPartialEq for FrameType
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
}
Variants§
§
Padding
§
Ping
§
Ack
§
AckEcn
§
ResetStream
§
StopSending
§
Crypto
§
NewToken
§
Stream(StreamInfo)
§
MaxData
§
MaxStreamData
§
MaxStreamsBidi
§
MaxStreamsUni
§
DataBlocked
§
StreamDataBlocked
§
StreamsBlockedBidi
§
StreamsBlockedUni
§
NewConnectionId
§
RetireConnectionId
§
PathChallenge
§
PathResponse
§
ConnectionClose
§
ApplicationClose
§
HandshakeDone
§
AckFrequency
§
ImmediateAck
§
Datagram(DatagramInfo)
§
ObservedIpv4Addr
§
ObservedIpv6Addr
§
PathAck
§
PathAckEcn
§
PathAbandon
§
PathStatusBackup
§
PathStatusAvailable
§
PathNewConnectionId
§
PathRetireConnectionId
§
MaxPathId
§
PathsBlocked
§
PathCidsBlocked
§
AddIpv4Address
§
AddIpv6Address
§
ReachOutAtIpv4
§
ReachOutAtIpv6
§
RemoveAddress
Trait Implementations§
Source§
impl Clone for FrameType
Source§
fn clone(&self) -> FrameType
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Decodable for FrameType
Source§
fn decode<B>(buf: &mut B) -> Result<FrameType, UnexpectedEnd>
where
+    B: Buf,
Decode a Self from the provided buffer, if the buffer is large enough
Source§
impl Display for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Encodable for FrameType
Source§
fn encode<B>(&self, buf: &mut B)
where
+    B: BufMut,
Append the encoding of self to the provided buffer.
Source§
impl PartialEq for FrameType
Source§
fn eq(&self, other: &FrameType) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl TryFrom<u64> for FrameType
Source§
type Error = InvalidFrameId
The type returned in the event of a conversion error.
Source§
fn try_from(value: u64) -> Result<FrameType, <FrameType as TryFrom<u64>>::Error>
Performs the conversion.
Source§
impl Copy for FrameType
Source§
impl Eq for FrameType
Source§
impl StructuralPartialEq for FrameType
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn/struct.ApplicationClose.html b/pr/323/docs/iroh_quinn/struct.ApplicationClose.html
index bb5b19c66..d9be55fa4 100644
--- a/pr/323/docs/iroh_quinn/struct.ApplicationClose.html
+++ b/pr/323/docs/iroh_quinn/struct.ApplicationClose.html
@@ -1,11 +1,11 @@
-ApplicationClose in iroh_quinn - Rust
ApplicationClose
iroh_quinn
Struct ApplicationClose 
Source 
pub struct ApplicationClose {
+ApplicationClose in iroh_quinn - Rust
ApplicationClose
iroh_quinn
Struct ApplicationClose 
Source 
pub struct ApplicationClose {
     pub error_code: VarInt,
     pub reason: Bytes,
 }
Expand description
Reason given by an application for closing the connection

 
Fields§
§error_code: VarInt
Application-specific reason code

 
§reason: Bytes
Human-readable reason for the close

-
Trait Implementations§
Source§
impl Clone for ApplicationClose
Source§
fn clone(&self) -> ApplicationClose
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Display for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl PartialEq for ApplicationClose
Source§
fn eq(&self, other: &ApplicationClose) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for ApplicationClose
Source§
impl StructuralPartialEq for ApplicationClose
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ApplicationClose
Source§
fn clone(&self) -> ApplicationClose
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Display for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl PartialEq for ApplicationClose
Source§
fn eq(&self, other: &ApplicationClose) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for ApplicationClose
Source§
impl StructuralPartialEq for ApplicationClose
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn/struct.ConnectionClose.html b/pr/323/docs/iroh_quinn/struct.ConnectionClose.html
index 853926ce5..7e905013f 100644
--- a/pr/323/docs/iroh_quinn/struct.ConnectionClose.html
+++ b/pr/323/docs/iroh_quinn/struct.ConnectionClose.html
@@ -1,4 +1,4 @@
-ConnectionClose in iroh_quinn - Rust
ConnectionClose
iroh_quinn
Struct ConnectionClose 
Source 
pub struct ConnectionClose {
+ConnectionClose in iroh_quinn - Rust
ConnectionClose
iroh_quinn
Struct ConnectionClose 
Source 
pub struct ConnectionClose {
     pub error_code: Code,
     pub frame_type: MaybeFrame,
     pub reason: Bytes,
@@ -6,8 +6,8 @@
 
Fields§
§error_code: Code
Class of error as encoded in the specification

 
§frame_type: MaybeFrame
Type of frame that caused the close

 
§reason: Bytes
Human-readable reason for the close

-
Trait Implementations§
Source§
impl Clone for ConnectionClose
Source§
fn clone(&self) -> ConnectionClose
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Display for ConnectionClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl From<Error> for ConnectionClose
Source§
fn from(x: Error) -> ConnectionClose
Converts to this type from the input type.
Source§
impl PartialEq for ConnectionClose
Source§
fn eq(&self, other: &ConnectionClose) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for ConnectionClose
Source§
impl StructuralPartialEq for ConnectionClose
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ConnectionClose
Source§
fn clone(&self) -> ConnectionClose
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Display for ConnectionClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl From<Error> for ConnectionClose
Source§
fn from(x: Error) -> ConnectionClose
Converts to this type from the input type.
Source§
impl PartialEq for ConnectionClose
Source§
fn eq(&self, other: &ConnectionClose) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for ConnectionClose
Source§
impl StructuralPartialEq for ConnectionClose
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn/struct.ConnectionStats.html b/pr/323/docs/iroh_quinn/struct.ConnectionStats.html
index fc80eb173..1e1861283 100644
--- a/pr/323/docs/iroh_quinn/struct.ConnectionStats.html
+++ b/pr/323/docs/iroh_quinn/struct.ConnectionStats.html
@@ -1,4 +1,4 @@
-ConnectionStats in iroh_quinn - Rust
ConnectionStats
iroh_quinn
Struct ConnectionStats 
Source 
#[non_exhaustive]
pub struct ConnectionStats {
+ConnectionStats in iroh_quinn - Rust
ConnectionStats
iroh_quinn
Struct ConnectionStats 
Source 
#[non_exhaustive]
pub struct ConnectionStats {
     pub udp_tx: UdpStats,
     pub udp_rx: UdpStats,
     pub frame_tx: FrameStats,
@@ -8,7 +8,7 @@
 
§udp_rx: UdpStats
Statistics about UDP datagrams received on a connection

 
§frame_tx: FrameStats
Statistics about frames transmitted on a connection

 
§frame_rx: FrameStats
Statistics about frames received on a connection

-
Trait Implementations§
Source§
impl Clone for ConnectionStats
Source§
fn clone(&self) -> ConnectionStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Default for ConnectionStats
Source§
fn default() -> ConnectionStats
Returns the “default value” for a type. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ConnectionStats
Source§
fn clone(&self) -> ConnectionStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Default for ConnectionStats
Source§
fn default() -> ConnectionStats
Returns the “default value” for a type. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn/struct.FrameStats.html b/pr/323/docs/iroh_quinn/struct.FrameStats.html
index a3dea813e..408d19ae8 100644
--- a/pr/323/docs/iroh_quinn/struct.FrameStats.html
+++ b/pr/323/docs/iroh_quinn/struct.FrameStats.html
@@ -37,7 +37,7 @@
     pub reach_out: u64,
     pub remove_address: u64,
 
}
Expand description
Number of frames transmitted or received of each frame type

-
Fields (Non-exhaustive)§
This struct is marked as non-exhaustive
Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.
§acks: u64§path_acks: u64§ack_frequency: u64§crypto: u64§connection_close: u64§data_blocked: u64§datagram: u64§handshake_done: u8§immediate_ack: u64§max_data: u64§max_stream_data: u64§max_streams_bidi: u64§max_streams_uni: u64§new_connection_id: u64§path_new_connection_id: u64§new_token: u64§path_challenge: u64§path_response: u64§ping: u64§reset_stream: u64§retire_connection_id: u64§path_retire_connection_id: u64§stream_data_blocked: u64§streams_blocked_bidi: u64§streams_blocked_uni: u64§stop_sending: u64§stream: u64§observed_addr: u64§path_abandon: u64§path_status_available: u64§path_status_backup: u64§max_path_id: u64§paths_blocked: u64§path_cids_blocked: u64§add_address: u64§reach_out: u64§remove_address: u64
Trait Implementations§
Source§
impl Clone for FrameStats
Source§
fn clone(&self) -> FrameStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Default for FrameStats
Source§
fn default() -> FrameStats
Returns the “default value” for a type. Read more
Source§
impl Copy for FrameStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Fields (Non-exhaustive)§
This struct is marked as non-exhaustive
Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.
§acks: u64§path_acks: u64§ack_frequency: u64§crypto: u64§connection_close: u64§data_blocked: u64§datagram: u64§handshake_done: u8§immediate_ack: u64§max_data: u64§max_stream_data: u64§max_streams_bidi: u64§max_streams_uni: u64§new_connection_id: u64§path_new_connection_id: u64§new_token: u64§path_challenge: u64§path_response: u64§ping: u64§reset_stream: u64§retire_connection_id: u64§path_retire_connection_id: u64§stream_data_blocked: u64§streams_blocked_bidi: u64§streams_blocked_uni: u64§stop_sending: u64§stream: u64§observed_addr: u64§path_abandon: u64§path_status_available: u64§path_status_backup: u64§max_path_id: u64§paths_blocked: u64§path_cids_blocked: u64§add_address: u64§reach_out: u64§remove_address: u64
Trait Implementations§
Source§
impl Clone for FrameStats
Source§
fn clone(&self) -> FrameStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Default for FrameStats
Source§
fn default() -> FrameStats
Returns the “default value” for a type. Read more
Source§
impl Copy for FrameStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn/struct.PathStats.html b/pr/323/docs/iroh_quinn/struct.PathStats.html
index 3a25ec205..2726c623f 100644
--- a/pr/323/docs/iroh_quinn/struct.PathStats.html
+++ b/pr/323/docs/iroh_quinn/struct.PathStats.html
@@ -1,4 +1,4 @@
-PathStats in iroh_quinn - Rust
PathStats
iroh_quinn
Struct PathStats 
Source 
#[non_exhaustive]
pub struct PathStats {
+PathStats in iroh_quinn - Rust
PathStats
iroh_quinn
Struct PathStats 
Source 
#[non_exhaustive]
pub struct PathStats {
     pub rtt: Duration,
     pub cwnd: u64,
     pub congestion_events: u64,
@@ -21,8 +21,8 @@
 lost_bytes)

 
§black_holes_detected: u64
The number of times a black hole was detected in the path

 
§current_mtu: u16
Largest UDP payload size the path currently supports

-
Trait Implementations§
Source§
impl Clone for PathStats
Source§
fn clone(&self) -> PathStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Default for PathStats
Source§
fn default() -> PathStats
Returns the “default value” for a type. Read more
Source§
impl PartialEq for PathStats
Source§
fn eq(&self, other: &PathStats) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for PathStats
Source§
impl Eq for PathStats
Source§
impl StructuralPartialEq for PathStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for PathStats
Source§
fn clone(&self) -> PathStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
Source§
impl Default for PathStats
Source§
fn default() -> PathStats
Returns the “default value” for a type. Read more
Source§
impl PartialEq for PathStats
Source§
fn eq(&self, other: &PathStats) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for PathStats
Source§
impl Eq for PathStats
Source§
impl StructuralPartialEq for PathStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/coding/struct.UnexpectedEnd.html b/pr/323/docs/iroh_quinn_proto/coding/struct.UnexpectedEnd.html
index a11ef9651..672327fe0 100644
--- a/pr/323/docs/iroh_quinn_proto/coding/struct.UnexpectedEnd.html
+++ b/pr/323/docs/iroh_quinn_proto/coding/struct.UnexpectedEnd.html
@@ -1,5 +1,5 @@
 UnexpectedEnd in iroh_quinn_proto::coding - Rust
UnexpectedEnd
iroh_quinn_proto::coding
Struct UnexpectedEnd 
Source 
pub struct UnexpectedEnd;
Expand description
Error indicating that the provided buffer was too small

-
Trait Implementations§
Source§
impl Clone for UnexpectedEnd
Source§
fn clone(&self) -> UnexpectedEnd
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for UnexpectedEnd
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for UnexpectedEnd
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for UnexpectedEnd
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<UnexpectedEnd> for Error
Source§
fn from(_: UnexpectedEnd) -> Self
Converts to this type from the input type.
Source§
impl From<UnexpectedEnd> for PacketDecodeError
Source§
fn from(_: UnexpectedEnd) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for UnexpectedEnd
Source§
fn eq(&self, other: &UnexpectedEnd) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+
Trait Implementations§
Source§
impl Clone for UnexpectedEnd
Source§
fn clone(&self) -> UnexpectedEnd
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for UnexpectedEnd
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for UnexpectedEnd
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for UnexpectedEnd
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<UnexpectedEnd> for Error
Source§
fn from(_: UnexpectedEnd) -> Self
Converts to this type from the input type.
Source§
impl From<UnexpectedEnd> for PacketDecodeError
Source§
fn from(_: UnexpectedEnd) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for UnexpectedEnd
Source§
fn eq(&self, other: &UnexpectedEnd) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
 and should not be overridden without very good reason.
Source§
impl Copy for UnexpectedEnd
Source§
impl Eq for UnexpectedEnd
Source§
impl StructuralPartialEq for UnexpectedEnd
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/coding/trait.Decodable.html b/pr/323/docs/iroh_quinn_proto/coding/trait.Decodable.html
index 0549a2287..9e6885c2d 100644
--- a/pr/323/docs/iroh_quinn_proto/coding/trait.Decodable.html
+++ b/pr/323/docs/iroh_quinn_proto/coding/trait.Decodable.html
@@ -3,4 +3,4 @@
     fn decode<B: Buf>(buf: &mut B) -> Result<Self>;
 }
Expand description
Decoding of QUIC primitives.

 
Required Methods§
Source
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Decode a Self from the provided buffer, if the buffer is large enough

-
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.
Implementations on Foreign Types§
Source§
impl Decodable for u8
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for u16
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for u32
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for u64
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for Ipv4Addr
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for Ipv6Addr
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Implementors§

\ No newline at end of file
+
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.
Implementations on Foreign Types§
Source§
impl Decodable for u8
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for u16
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for u32
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for u64
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for Ipv4Addr
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Source§
impl Decodable for Ipv6Addr
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Implementors§

\ No newline at end of file
diff --git a/pr/323/docs/iroh_quinn_proto/coding/trait.Encodable.html b/pr/323/docs/iroh_quinn_proto/coding/trait.Encodable.html
index 63c896148..acb0150ee 100644
--- a/pr/323/docs/iroh_quinn_proto/coding/trait.Encodable.html
+++ b/pr/323/docs/iroh_quinn_proto/coding/trait.Encodable.html
@@ -3,4 +3,4 @@
     fn encode<B: BufMut>(&self, buf: &mut B);
 }
Expand description
Infallible encoding of QUIC primitives.

 
Required Methods§
Source
fn encode<B: BufMut>(&self, buf: &mut B)
Append the encoding of self to the provided buffer.

-
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.
Implementations on Foreign Types§
Source§
impl Encodable for u8
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for u16
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for u32
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for u64
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for Ipv4Addr
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for Ipv6Addr
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Implementors§

\ No newline at end of file
+
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.
Implementations on Foreign Types§
Source§
impl Encodable for u8
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for u16
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for u32
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for u64
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for Ipv4Addr
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Source§
impl Encodable for Ipv6Addr
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Implementors§

\ No newline at end of file
diff --git a/pr/323/docs/iroh_quinn_proto/enum.ClosePathError.html b/pr/323/docs/iroh_quinn_proto/enum.ClosePathError.html
index 5093aa9f8..07d051047 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.ClosePathError.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.ClosePathError.html
@@ -1,11 +1,11 @@
-ClosePathError in iroh_quinn_proto - Rust
ClosePathError
iroh_quinn_proto
Enum ClosePathError 
Source 
pub enum ClosePathError {
+ClosePathError in iroh_quinn_proto - Rust
ClosePathError
iroh_quinn_proto
Enum ClosePathError 
Source 
pub enum ClosePathError {
     ClosedPath,
     LastOpenPath,
 }
Expand description
Errors triggered when abandoning a path

 
Variants§
§
ClosedPath
The path is already closed or was never opened

 
§
LastOpenPath
This is the last path, which can not be abandoned

-
Trait Implementations§
Source§
impl Clone for ClosePathError
Source§
fn clone(&self) -> ClosePathError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ClosePathError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for ClosePathError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for ClosePathError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl PartialEq for ClosePathError
Source§
fn eq(&self, other: &ClosePathError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for ClosePathError
Source§
impl StructuralPartialEq for ClosePathError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ClosePathError
Source§
fn clone(&self) -> ClosePathError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ClosePathError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for ClosePathError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for ClosePathError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl PartialEq for ClosePathError
Source§
fn eq(&self, other: &ClosePathError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for ClosePathError
Source§
impl StructuralPartialEq for ClosePathError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.ConnectionError.html b/pr/323/docs/iroh_quinn_proto/enum.ConnectionError.html
index f95e6db31..dfae5e329 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.ConnectionError.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.ConnectionError.html
@@ -1,4 +1,4 @@
-ConnectionError in iroh_quinn_proto - Rust
ConnectionError
iroh_quinn_proto
Enum ConnectionError 
Source 
pub enum ConnectionError {
+ConnectionError in iroh_quinn_proto - Rust
ConnectionError
iroh_quinn_proto
Enum ConnectionError 
Source 
pub enum ConnectionError {
     VersionMismatch,
     TransportError(TransportError),
     ConnectionClosed(ConnectionClose),
@@ -20,8 +20,8 @@ and §
LocallyClosed
The local application closed the connection

 
§
CidsExhausted
The connection could not be created because not enough of the CID space is available

 
Try using longer connection IDs.

-
Trait Implementations§
Source§
impl Clone for ConnectionError
Source§
fn clone(&self) -> ConnectionError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for ConnectionError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for ConnectionError
Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<ConnectionError> for Error
Source§
fn from(x: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for ConnectionError
Source§
fn from(source: TransportError) -> Self
Converts to this type from the input type.
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impl PartialEq for ConnectionError
Source§
fn eq(&self, other: &ConnectionError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for ConnectionError
Source§
impl StructuralPartialEq for ConnectionError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ConnectionError
Source§
fn clone(&self) -> ConnectionError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for ConnectionError
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fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for ConnectionError
Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<ConnectionError> for Error
Source§
fn from(x: ConnectionError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for ConnectionError
Source§
fn from(source: TransportError) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for ConnectionError
Source§
fn eq(&self, other: &ConnectionError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for ConnectionError
Source§
impl StructuralPartialEq for ConnectionError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.Dir.html b/pr/323/docs/iroh_quinn_proto/enum.Dir.html
index adb1c527a..d44638051 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.Dir.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.Dir.html
@@ -9,7 +9,7 @@ unstructured data. Read more
§
fn try_size_hint(
     depth: usize,
 ) -> Result<(usize, Option<usize>), MaxRecursionReached>
Get a size hint for how many bytes out of an Unstructured this type
-needs to construct itself. Read more
Source§
impl Clone for Dir
Source§
fn clone(&self) -> Dir
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for Dir
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for Dir
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl From<Dir> for StreamType
Available on crate feature qlog only.
Source§
fn from(value: Dir) -> Self
Converts to this type from the input type.
Source§
impl Hash for Dir
Source§
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given Hasher. Read more
1.3.0 · Source§
fn hash_slice<H>(data: &[Self], state: &mut H)
where
+needs to construct itself. Read more
Source§
impl Clone for Dir
Source§
fn clone(&self) -> Dir
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for Dir
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for Dir
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl From<Dir> for StreamType
Available on crate feature qlog only.
Source§
fn from(value: Dir) -> Self
Converts to this type from the input type.
Source§
impl Hash for Dir
Source§
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given Hasher. Read more
1.3.0 · Source§
fn hash_slice<H>(data: &[Self], state: &mut H)
where
     H: Hasher,
     Self: Sized,
Feeds a slice of this type into the given Hasher. Read more
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impl Ord for Dir
Source§
fn cmp(&self, other: &Dir) -> Ordering
This method returns an Ordering between self and other. Read more
1.21.0 · Source§
fn max(self, other: Self) -> Self
where
     Self: Sized,
Compares and returns the maximum of two values. Read more
1.21.0 · Source§
fn min(self, other: Self) -> Self
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.Event.html b/pr/323/docs/iroh_quinn_proto/enum.Event.html
index 1b8cf8122..142009cd1 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.Event.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.Event.html
@@ -1,4 +1,4 @@
-Event in iroh_quinn_proto - Rust
Event
iroh_quinn_proto
Enum Event 
Source 
pub enum Event {
+Event in iroh_quinn_proto - Rust
Event
iroh_quinn_proto
Enum Event 
Source 
pub enum Event {
     HandshakeDataReady,
     Connected,
     HandshakeConfirmed,
@@ -22,7 +22,7 @@
 
§
DatagramsUnblocked
One or more application datagrams have been sent after blocking

 
§
Path(PathEvent)
(Multi)Path events

 
§
NatTraversal(Event)
Iroh’s nat traversal events

-
Trait Implementations§
Source§
impl Debug for Event
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fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
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impl From<PathEvent> for Event
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fn from(source: PathEvent) -> Self
Converts to this type from the input type.
Auto Trait Implementations§
§
impl !Freeze for Event
§
impl !RefUnwindSafe for Event
§
impl Send for Event
§
impl Sync for Event
§
impl Unpin for Event
§
impl !UnwindSafe for Event
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Debug for Event
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl From<PathEvent> for Event
Source§
fn from(source: PathEvent) -> Self
Converts to this type from the input type.
Auto Trait Implementations§
§
impl !Freeze for Event
§
impl !RefUnwindSafe for Event
§
impl Send for Event
§
impl Sync for Event
§
impl Unpin for Event
§
impl !UnwindSafe for Event
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> From<T> for T
Source§
fn from(t: T) -> T
Returns the argument unchanged.

diff --git a/pr/323/docs/iroh_quinn_proto/enum.FrameType.html b/pr/323/docs/iroh_quinn_proto/enum.FrameType.html
index 2a31c0268..b8bd8a4ea 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.FrameType.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.FrameType.html
@@ -1,4 +1,4 @@
-FrameType in iroh_quinn_proto - Rust
FrameType
iroh_quinn_proto
Enum FrameType 
Source 
pub enum FrameType {
+FrameType in iroh_quinn_proto - Rust
FrameType
iroh_quinn_proto
Enum FrameType 
Source 
pub enum FrameType {
 
Show 44 variants    Padding,
     Ping,
     Ack,
@@ -43,8 +43,8 @@
     ReachOutAtIpv4,
     ReachOutAtIpv6,
     RemoveAddress,
-
}
Variants§
§
Padding
§
Ping
§
Ack
§
AckEcn
§
ResetStream
§
StopSending
§
Crypto
§
NewToken
§
Stream(StreamInfo)
§
MaxData
§
MaxStreamData
§
MaxStreamsBidi
§
MaxStreamsUni
§
DataBlocked
§
StreamDataBlocked
§
StreamsBlockedBidi
§
StreamsBlockedUni
§
NewConnectionId
§
RetireConnectionId
§
PathChallenge
§
PathResponse
§
ConnectionClose
§
ApplicationClose
§
HandshakeDone
§
AckFrequency
§
ImmediateAck
§
Datagram(DatagramInfo)
§
ObservedIpv4Addr
§
ObservedIpv6Addr
§
PathAck
§
PathAckEcn
§
PathAbandon
§
PathStatusBackup
§
PathStatusAvailable
§
PathNewConnectionId
§
PathRetireConnectionId
§
MaxPathId
§
PathsBlocked
§
PathCidsBlocked
§
AddIpv4Address
§
AddIpv6Address
§
ReachOutAtIpv4
§
ReachOutAtIpv6
§
RemoveAddress
Trait Implementations§
Source§
impl Clone for FrameType
Source§
fn clone(&self) -> FrameType
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Decodable for FrameType
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Decode a Self from the provided buffer, if the buffer is large enough
Source§
impl Display for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Encodable for FrameType
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Append the encoding of self to the provided buffer.
Source§
impl PartialEq for FrameType
Source§
fn eq(&self, other: &FrameType) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl TryFrom<u64> for FrameType
Source§
type Error = InvalidFrameId
The type returned in the event of a conversion error.
Source§
fn try_from(value: u64) -> Result<Self, Self::Error>
Performs the conversion.
Source§
impl Copy for FrameType
Source§
impl Eq for FrameType
Source§
impl StructuralPartialEq for FrameType
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
}
Variants§
§
Padding
§
Ping
§
Ack
§
AckEcn
§
ResetStream
§
StopSending
§
Crypto
§
NewToken
§
Stream(StreamInfo)
§
MaxData
§
MaxStreamData
§
MaxStreamsBidi
§
MaxStreamsUni
§
DataBlocked
§
StreamDataBlocked
§
StreamsBlockedBidi
§
StreamsBlockedUni
§
NewConnectionId
§
RetireConnectionId
§
PathChallenge
§
PathResponse
§
ConnectionClose
§
ApplicationClose
§
HandshakeDone
§
AckFrequency
§
ImmediateAck
§
Datagram(DatagramInfo)
§
ObservedIpv4Addr
§
ObservedIpv6Addr
§
PathAck
§
PathAckEcn
§
PathAbandon
§
PathStatusBackup
§
PathStatusAvailable
§
PathNewConnectionId
§
PathRetireConnectionId
§
MaxPathId
§
PathsBlocked
§
PathCidsBlocked
§
AddIpv4Address
§
AddIpv6Address
§
ReachOutAtIpv4
§
ReachOutAtIpv6
§
RemoveAddress
Trait Implementations§
Source§
impl Clone for FrameType
Source§
fn clone(&self) -> FrameType
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Decodable for FrameType
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Decode a Self from the provided buffer, if the buffer is large enough
Source§
impl Display for FrameType
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Encodable for FrameType
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Append the encoding of self to the provided buffer.
Source§
impl PartialEq for FrameType
Source§
fn eq(&self, other: &FrameType) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl TryFrom<u64> for FrameType
Source§
type Error = InvalidFrameId
The type returned in the event of a conversion error.
Source§
fn try_from(value: u64) -> Result<Self, Self::Error>
Performs the conversion.
Source§
impl Copy for FrameType
Source§
impl Eq for FrameType
Source§
impl StructuralPartialEq for FrameType
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.LongType.html b/pr/323/docs/iroh_quinn_proto/enum.LongType.html
index 8f07318d2..2bbbe2383 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.LongType.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.LongType.html
@@ -1,11 +1,11 @@
-LongType in iroh_quinn_proto - Rust
LongType
iroh_quinn_proto
Enum LongType 
Source 
pub enum LongType {
+LongType in iroh_quinn_proto - Rust
LongType
iroh_quinn_proto
Enum LongType 
Source 
pub enum LongType {
     Handshake,
     ZeroRtt,
 }
Expand description
Long packet types with uniform header structure

 
Variants§
§
Handshake
Handshake packet

 
§
ZeroRtt
0-RTT packet

-
Trait Implementations§
Source§
impl Clone for LongType
Source§
fn clone(&self) -> LongType
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for LongType
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for LongType
Source§
fn eq(&self, other: &LongType) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for LongType
Source§
impl Eq for LongType
Source§
impl StructuralPartialEq for LongType
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for LongType
Source§
fn clone(&self) -> LongType
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for LongType
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for LongType
Source§
fn eq(&self, other: &LongType) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for LongType
Source§
impl Eq for LongType
Source§
impl StructuralPartialEq for LongType
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.MaybeFrame.html b/pr/323/docs/iroh_quinn_proto/enum.MaybeFrame.html
index 51cdba17e..0cfd197da 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.MaybeFrame.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.MaybeFrame.html
@@ -1,4 +1,4 @@
-MaybeFrame in iroh_quinn_proto - Rust
MaybeFrame
iroh_quinn_proto
Enum MaybeFrame 
Source 
pub enum MaybeFrame {
+MaybeFrame in iroh_quinn_proto - Rust
MaybeFrame
iroh_quinn_proto
Enum MaybeFrame 
Source 
pub enum MaybeFrame {
     None,
     Unknown(u64),
     Known(FrameType),
@@ -6,8 +6,8 @@
 
Variants§
§
None
Not attributed to any particular FrameType.

 
§
Unknown(u64)
Attributed to some frame type this implementation does not recognize.

 
§
Known(FrameType)
Attributed to a specific FrameType, never FrameType::Padding.

-
Trait Implementations§
Source§
impl Clone for MaybeFrame
Source§
fn clone(&self) -> MaybeFrame
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for MaybeFrame
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Decodable for MaybeFrame
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Decode a Self from the provided buffer, if the buffer is large enough
Source§
impl Display for MaybeFrame
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Encodable for MaybeFrame
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Append the encoding of self to the provided buffer.
Source§
impl PartialEq for MaybeFrame
Source§
fn eq(&self, other: &MaybeFrame) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for MaybeFrame
Source§
impl Eq for MaybeFrame
Source§
impl StructuralPartialEq for MaybeFrame
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for MaybeFrame
Source§
fn clone(&self) -> MaybeFrame
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for MaybeFrame
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Decodable for MaybeFrame
Source§
fn decode<B: Buf>(buf: &mut B) -> Result<Self>
Decode a Self from the provided buffer, if the buffer is large enough
Source§
impl Display for MaybeFrame
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Encodable for MaybeFrame
Source§
fn encode<B: BufMut>(&self, buf: &mut B)
Append the encoding of self to the provided buffer.
Source§
impl PartialEq for MaybeFrame
Source§
fn eq(&self, other: &MaybeFrame) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for MaybeFrame
Source§
impl Eq for MaybeFrame
Source§
impl StructuralPartialEq for MaybeFrame
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.PacketDecodeError.html b/pr/323/docs/iroh_quinn_proto/enum.PacketDecodeError.html
index ae013578f..94703cccf 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.PacketDecodeError.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.PacketDecodeError.html
@@ -1,4 +1,4 @@
-PacketDecodeError in iroh_quinn_proto - Rust
PacketDecodeError
iroh_quinn_proto
Enum PacketDecodeError 
Source 
pub enum PacketDecodeError {
+PacketDecodeError in iroh_quinn_proto - Rust
PacketDecodeError
iroh_quinn_proto
Enum PacketDecodeError 
Source 
pub enum PacketDecodeError {
     UnsupportedVersion {
         src_cid: ConnectionId,
         dst_cid: ConnectionId,
@@ -11,16 +11,16 @@
 
§dst_cid: ConnectionId
Destination Connection ID

 
§version: u32
The version that was unsupported

 
§
InvalidHeader(&'static str)
The packet header is invalid

-
Trait Implementations§
Source§
impl Clone for PacketDecodeError
Source§
fn clone(&self) -> PacketDecodeError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PacketDecodeError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for PacketDecodeError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for PacketDecodeError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<UnexpectedEnd> for PacketDecodeError
Source§
fn from(_: UnexpectedEnd) -> Self
Converts to this type from the input type.
Source§
impl Hash for PacketDecodeError
Source§
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given Hasher. Read more
1.3.0 · Source§
fn hash_slice<H>(data: &[Self], state: &mut H)
where
+
Trait Implementations§
Source§
impl Clone for PacketDecodeError
Source§
fn clone(&self) -> PacketDecodeError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PacketDecodeError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for PacketDecodeError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for PacketDecodeError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<UnexpectedEnd> for PacketDecodeError
Source§
fn from(_: UnexpectedEnd) -> Self
Converts to this type from the input type.
Source§
impl Hash for PacketDecodeError
Source§
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given Hasher. Read more
1.3.0 · Source§
fn hash_slice<H>(data: &[Self], state: &mut H)
where
     H: Hasher,
-    Self: Sized,
Feeds a slice of this type into the given Hasher. Read more
Source§
impl Ord for PacketDecodeError
Source§
fn cmp(&self, other: &PacketDecodeError) -> Ordering
This method returns an Ordering between self and other. Read more
1.21.0 · Source§
fn max(self, other: Self) -> Self
where
+    Self: Sized,
Feeds a slice of this type into the given Hasher. Read more
Source§
impl Ord for PacketDecodeError
Source§
fn cmp(&self, other: &PacketDecodeError) -> Ordering
This method returns an Ordering between self and other. Read more
1.21.0 · Source§
fn max(self, other: Self) -> Self
where
     Self: Sized,
Compares and returns the maximum of two values. Read more
1.21.0 · Source§
fn min(self, other: Self) -> Self
where
     Self: Sized,
Compares and returns the minimum of two values. Read more
1.50.0 · Source§
fn clamp(self, min: Self, max: Self) -> Self
where
-    Self: Sized,
Restrict a value to a certain interval. Read more
Source§
impl PartialEq for PacketDecodeError
Source§
fn eq(&self, other: &PacketDecodeError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl PartialOrd for PacketDecodeError
Source§
fn partial_cmp(&self, other: &PacketDecodeError) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§
fn lt(&self, other: &Rhs) -> bool
Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · Source§
fn le(&self, other: &Rhs) -> bool
Tests less than or equal to (for self and other) and is used by the
+    Self: Sized,
Restrict a value to a certain interval. Read more
Source§
impl PartialEq for PacketDecodeError
Source§
fn eq(&self, other: &PacketDecodeError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl PartialOrd for PacketDecodeError
Source§
fn partial_cmp(&self, other: &PacketDecodeError) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§
fn lt(&self, other: &Rhs) -> bool
Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · Source§
fn le(&self, other: &Rhs) -> bool
Tests less than or equal to (for self and other) and is used by the
 <= operator. Read more
1.0.0 · Source§
fn gt(&self, other: &Rhs) -> bool
Tests greater than (for self and other) and is used by the >
 operator. Read more
1.0.0 · Source§
fn ge(&self, other: &Rhs) -> bool
Tests greater than or equal to (for self and other) and is used by
-the >= operator. Read more
Source§
impl Eq for PacketDecodeError
Source§
impl StructuralPartialEq for PacketDecodeError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+the >= operator. Read more
Source§
impl Eq for PacketDecodeError
Source§
impl StructuralPartialEq for PacketDecodeError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.PathError.html b/pr/323/docs/iroh_quinn_proto/enum.PathError.html
index 850d62bf5..233640273 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.PathError.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.PathError.html
@@ -1,4 +1,4 @@
-PathError in iroh_quinn_proto - Rust
PathError
iroh_quinn_proto
Enum PathError 
Source 
pub enum PathError {
+PathError in iroh_quinn_proto - Rust
PathError
iroh_quinn_proto
Enum PathError 
Source 
pub enum PathError {
     MultipathNotNegotiated,
     ServerSideNotAllowed,
     MaxPathIdReached,
@@ -12,8 +12,8 @@
 
§
RemoteCidsExhausted
No remote CIDs available to open a new path

 
§
ValidationFailed
Path could not be validated and will be abandoned

 
§
InvalidRemoteAddress(SocketAddr)
The remote address for the path is not supported by the endpoint

-
Trait Implementations§
Source§
impl Clone for PathError
Source§
fn clone(&self) -> PathError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for PathError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for PathError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl PartialEq for PathError
Source§
fn eq(&self, other: &PathError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for PathError
Source§
impl Eq for PathError
Source§
impl StructuralPartialEq for PathError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for PathError
Source§
fn clone(&self) -> PathError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for PathError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for PathError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl PartialEq for PathError
Source§
fn eq(&self, other: &PathError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for PathError
Source§
impl Eq for PathError
Source§
impl StructuralPartialEq for PathError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.PathEvent.html b/pr/323/docs/iroh_quinn_proto/enum.PathEvent.html
index a7b572f91..354ae4aca 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.PathEvent.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.PathEvent.html
@@ -47,7 +47,7 @@ changes the status.

 
Fields
§id: PathId
Path over which the observed address was reported, PathId::ZERO when multipath is
 not negotiated

 
§addr: SocketAddr
The address observed by the remote over this path

-
Trait Implementations§
Source§
impl Clone for PathEvent
Source§
fn clone(&self) -> PathEvent
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathEvent
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl From<PathEvent> for Event
Source§
fn from(source: PathEvent) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for PathEvent
Source§
fn eq(&self, other: &PathEvent) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+
Trait Implementations§
Source§
impl Clone for PathEvent
Source§
fn clone(&self) -> PathEvent
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathEvent
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl From<PathEvent> for Event
Source§
fn from(source: PathEvent) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for PathEvent
Source§
fn eq(&self, other: &PathEvent) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
 and should not be overridden without very good reason.
Source§
impl Eq for PathEvent
Source§
impl StructuralPartialEq for PathEvent
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.ProtectedHeader.html b/pr/323/docs/iroh_quinn_proto/enum.ProtectedHeader.html
index 35912ec51..e68afd7cd 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.ProtectedHeader.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.ProtectedHeader.html
@@ -1,4 +1,4 @@
-ProtectedHeader in iroh_quinn_proto - Rust
ProtectedHeader
iroh_quinn_proto
Enum ProtectedHeader 
Source 
pub enum ProtectedHeader {
+ProtectedHeader in iroh_quinn_proto - Rust
ProtectedHeader
iroh_quinn_proto
Enum ProtectedHeader 
Source 
pub enum ProtectedHeader {
     Initial(ProtectedInitialHeader),
     Long {
         ty: LongType,
@@ -40,14 +40,14 @@
 
Fields
§random: u8
Random value

 
§dst_cid: ConnectionId
Destination Connection ID

 
§src_cid: ConnectionId
Source Connection ID

-
Implementations§
Source§
impl ProtectedHeader
Source
pub fn dst_cid(&self) -> ConnectionId
The destination Connection ID of the packet

-
Source
pub fn decode(
+
Implementations§
Source§
impl ProtectedHeader
Source
pub fn dst_cid(&self) -> ConnectionId
The destination Connection ID of the packet

+
Source
pub fn decode(
     buf: &mut Cursor<BytesMut>,
     cid_parser: &(impl ConnectionIdParser + ?Sized),
     supported_versions: &[u32],
     grease_quic_bit: bool,
 ) -> Result<Self, PacketDecodeError>
Decode a plain header from given buffer, with given ConnectionIdParser.

-
Trait Implementations§
Source§
impl Clone for ProtectedHeader
Source§
fn clone(&self) -> ProtectedHeader
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ProtectedHeader
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ProtectedHeader
Source§
fn clone(&self) -> ProtectedHeader
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ProtectedHeader
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/enum.SendDatagramError.html b/pr/323/docs/iroh_quinn_proto/enum.SendDatagramError.html
index 900d93edf..a848668b9 100644
--- a/pr/323/docs/iroh_quinn_proto/enum.SendDatagramError.html
+++ b/pr/323/docs/iroh_quinn_proto/enum.SendDatagramError.html
@@ -1,4 +1,4 @@
-SendDatagramError in iroh_quinn_proto - Rust
SendDatagramError
iroh_quinn_proto
Enum SendDatagramError 
Source 
pub enum SendDatagramError {
+SendDatagramError in iroh_quinn_proto - Rust
SendDatagramError
iroh_quinn_proto
Enum SendDatagramError 
Source 
pub enum SendDatagramError {
     UnsupportedByPeer,
     Disabled,
     TooLarge,
@@ -10,16 +10,16 @@
 
Indicates that the path MTU minus overhead or the limit advertised by the peer has been
 exceeded.

 
§
Blocked(Bytes)
Send would block

-
Trait Implementations§
Source§
impl Clone for SendDatagramError
Source§
fn clone(&self) -> SendDatagramError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for SendDatagramError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for SendDatagramError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for SendDatagramError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl Hash for SendDatagramError
Source§
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given Hasher. Read more
1.3.0 · Source§
fn hash_slice<H>(data: &[Self], state: &mut H)
where
+
Trait Implementations§
Source§
impl Clone for SendDatagramError
Source§
fn clone(&self) -> SendDatagramError
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for SendDatagramError
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for SendDatagramError
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for SendDatagramError
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl Hash for SendDatagramError
Source§
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given Hasher. Read more
1.3.0 · Source§
fn hash_slice<H>(data: &[Self], state: &mut H)
where
     H: Hasher,
-    Self: Sized,
Feeds a slice of this type into the given Hasher. Read more
Source§
impl Ord for SendDatagramError
Source§
fn cmp(&self, other: &SendDatagramError) -> Ordering
This method returns an Ordering between self and other. Read more
1.21.0 · Source§
fn max(self, other: Self) -> Self
where
+    Self: Sized,
Feeds a slice of this type into the given Hasher. Read more
Source§
impl Ord for SendDatagramError
Source§
fn cmp(&self, other: &SendDatagramError) -> Ordering
This method returns an Ordering between self and other. Read more
1.21.0 · Source§
fn max(self, other: Self) -> Self
where
     Self: Sized,
Compares and returns the maximum of two values. Read more
1.21.0 · Source§
fn min(self, other: Self) -> Self
where
     Self: Sized,
Compares and returns the minimum of two values. Read more
1.50.0 · Source§
fn clamp(self, min: Self, max: Self) -> Self
where
-    Self: Sized,
Restrict a value to a certain interval. Read more
Source§
impl PartialEq for SendDatagramError
Source§
fn eq(&self, other: &SendDatagramError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl PartialOrd for SendDatagramError
Source§
fn partial_cmp(&self, other: &SendDatagramError) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§
fn lt(&self, other: &Rhs) -> bool
Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · Source§
fn le(&self, other: &Rhs) -> bool
Tests less than or equal to (for self and other) and is used by the
+    Self: Sized,
Restrict a value to a certain interval. Read more
Source§
impl PartialEq for SendDatagramError
Source§
fn eq(&self, other: &SendDatagramError) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl PartialOrd for SendDatagramError
Source§
fn partial_cmp(&self, other: &SendDatagramError) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§
fn lt(&self, other: &Rhs) -> bool
Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · Source§
fn le(&self, other: &Rhs) -> bool
Tests less than or equal to (for self and other) and is used by the
 <= operator. Read more
1.0.0 · Source§
fn gt(&self, other: &Rhs) -> bool
Tests greater than (for self and other) and is used by the >
 operator. Read more
1.0.0 · Source§
fn ge(&self, other: &Rhs) -> bool
Tests greater than or equal to (for self and other) and is used by
-the >= operator. Read more
Source§
impl Eq for SendDatagramError
Source§
impl StructuralPartialEq for SendDatagramError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+the >= operator. Read more
Source§
impl Eq for SendDatagramError
Source§
impl StructuralPartialEq for SendDatagramError
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.ApplicationClose.html b/pr/323/docs/iroh_quinn_proto/struct.ApplicationClose.html
index 380fe3169..486dff3a5 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.ApplicationClose.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.ApplicationClose.html
@@ -1,11 +1,11 @@
-ApplicationClose in iroh_quinn_proto - Rust
ApplicationClose
iroh_quinn_proto
Struct ApplicationClose 
Source 
pub struct ApplicationClose {
+ApplicationClose in iroh_quinn_proto - Rust
ApplicationClose
iroh_quinn_proto
Struct ApplicationClose 
Source 
pub struct ApplicationClose {
     pub error_code: VarInt,
     pub reason: Bytes,
 }
Expand description
Reason given by an application for closing the connection

 
Fields§
§error_code: VarInt
Application-specific reason code

 
§reason: Bytes
Human-readable reason for the close

-
Trait Implementations§
Source§
impl Clone for ApplicationClose
Source§
fn clone(&self) -> ApplicationClose
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for ApplicationClose
Source§
fn eq(&self, other: &ApplicationClose) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for ApplicationClose
Source§
impl StructuralPartialEq for ApplicationClose
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ApplicationClose
Source§
fn clone(&self) -> ApplicationClose
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for ApplicationClose
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for ApplicationClose
Source§
fn eq(&self, other: &ApplicationClose) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for ApplicationClose
Source§
impl StructuralPartialEq for ApplicationClose
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.Connection.html b/pr/323/docs/iroh_quinn_proto/struct.Connection.html
index 906ebc6fa..88d8a55f9 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.Connection.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.Connection.html
@@ -1,4 +1,4 @@
-Connection in iroh_quinn_proto - Rust
Connection
iroh_quinn_proto
Struct Connection 
Source 
pub struct Connection { /* private fields */ }
Expand description
Protocol state and logic for a single QUIC connection

+Connection in iroh_quinn_proto - Rust
Connection
iroh_quinn_proto
Struct Connection 
Source 
pub struct Connection { /* private fields */ }
Expand description
Protocol state and logic for a single QUIC connection

 
Objects of this type receive ConnectionEvents and emit EndpointEvents and application
 Events to make progress. To handle timeouts, a Connection returns timer updates and
 expects timeouts through various methods. A number of simple getter methods are exposed
@@ -33,7 +33,7 @@ increasing time. Specifically, calling Instant may be interleaved in any order with a
 call to handle_event at that same instant; however
 events or timeouts with different instants must not be interleaved.

-
Implementations§
Source§
impl Connection
Source
pub fn poll_timeout(&mut self) -> Option<Instant>
Returns the next time at which handle_timeout should be called

+
Implementations§
Source§
impl Connection
Source
pub fn poll_timeout(&mut self) -> Option<Instant>
Returns the next time at which handle_timeout should be called

 
The value returned may change after:

 
    
 
  • the application performed some I/O on the connection
    • 
@@ -41,17 +41,17 @@ events or timeouts with different instants must not be interleaved.
    
 
  • a call to poll_transmit returned Some
    • 
 
  • a call was made to handle_timeout
    • 
 

-
Source
pub fn poll(&mut self) -> Option<Event>
Returns application-facing events

+
Source
pub fn poll(&mut self) -> Option<Event>
Returns application-facing events

 
Connections should be polled for events after:

 
    
 
  • a call was made to handle_event
    • 
 
  • a call was made to handle_timeout
    • 
 

-
Source
pub fn poll_endpoint_events(&mut self) -> Option<EndpointEvent>
Return endpoint-facing events

-
Source
pub fn streams(&mut self) -> Streams<'_>
Provide control over streams

-
Source
pub fn recv_stream(&mut self, id: StreamId) -> RecvStream<'_>
Provide control over streams

-
Source
pub fn send_stream(&mut self, id: StreamId) -> SendStream<'_>
Provide control over streams

-
Source
pub fn open_path_ensure(
+
Source
pub fn poll_endpoint_events(&mut self) -> Option<EndpointEvent>
Return endpoint-facing events

+
Source
pub fn streams(&mut self) -> Streams<'_>
Provide control over streams

+
Source
pub fn recv_stream(&mut self, id: StreamId) -> RecvStream<'_>
Provide control over streams

+
Source
pub fn send_stream(&mut self, id: StreamId) -> SendStream<'_>
Provide control over streams

+
Source
pub fn open_path_ensure(
     &mut self,
     network_path: FourTuple,
     initial_status: PathStatus,
@@ -65,7 +65,7 @@ remote addresses.

 remote, should it not be known yet. We assume that if we already have a path to the remote,
 the OS is likely to use the same interface to talk to said remote.

 
See also open_path. Returns (path_id, true) if the path already existed. (path_id, false) if was opened.

-
Source
pub fn open_path(
+
Source
pub fn open_path(
     &mut self,
     network_path: FourTuple,
     initial_status: PathStatus,
@@ -73,7 +73,7 @@ the OS is likely to use the same interface to talk to said remote.

 ) -> Result<PathId, PathError>
Opens a new path

 
Further errors might occur and they will be emitted in PathEvent::LocallyClosed events.
 When the path is opened it will be reported as an PathEvent::Opened.

-
Source
pub fn close_path(
+
Source
pub fn close_path(
     &mut self,
     now: Instant,
     path_id: PathId,
@@ -82,32 +82,32 @@ When the path is opened it will be reported as an 
Source
pub fn paths(&self) -> Vec<PathId>
Returns all known paths.

+
Source
pub fn paths(&self) -> Vec<PathId>
Returns all known paths.

 
There is no guarantee any of these paths are open or usable.

-
Source
pub fn path_status(&self, path_id: PathId) -> Result<PathStatus, ClosedPath>
Gets the local PathStatus for a known PathId

-
Source
pub fn network_path(&self, path_id: PathId) -> Result<FourTuple, ClosedPath>
Returns the path’s network path represented as a 4-tuple.

-
Source
pub fn set_path_status(
+
Source
pub fn path_status(&self, path_id: PathId) -> Result<PathStatus, ClosedPath>
Gets the local PathStatus for a known PathId

+
Source
pub fn network_path(&self, path_id: PathId) -> Result<FourTuple, ClosedPath>
Returns the path’s network path represented as a 4-tuple.

+
Source
pub fn set_path_status(
     &mut self,
     path_id: PathId,
     status: PathStatus,
 ) -> Result<PathStatus, SetPathStatusError>
Sets the PathStatus for a known PathId

 
Returns the previous path status on success.

-
Source
pub fn remote_path_status(&self, path_id: PathId) -> Option<PathStatus>
Returns the remote path status

-
Source
pub fn set_path_max_idle_timeout(
+
Source
pub fn remote_path_status(&self, path_id: PathId) -> Option<PathStatus>
Returns the remote path status

+
Source
pub fn set_path_max_idle_timeout(
     &mut self,
     path_id: PathId,
     timeout: Option<Duration>,
 ) -> Result<Option<Duration>, ClosedPath>
Sets the max_idle_timeout for a specific path

 
See TransportConfig::default_path_max_idle_timeout for details.

 
Returns the previous value of the setting.

-
Source
pub fn set_path_keep_alive_interval(
+
Source
pub fn set_path_keep_alive_interval(
     &mut self,
     path_id: PathId,
     interval: Option<Duration>,
 ) -> Result<Option<Duration>, ClosedPath>
Sets the keep_alive_interval for a specific path

 
See TransportConfig::default_path_keep_alive_interval for details.

 
Returns the previous value of the setting.

-
Source
pub fn poll_transmit(
+
Source
pub fn poll_transmit(
     &mut self,
     now: Instant,
     max_datagrams: NonZeroUsize,
@@ -121,60 +121,60 @@ for a path that was never opened locally.

 
 
max_datagrams specifies how many datagrams can be returned inside a
 single Transmit using GSO. This must be at least 1.

-
Source

pub fn handle_event(&mut self, event: ConnectionEvent)

Process ConnectionEvents generated by the associated Endpoint

+
Source

pub fn handle_event(&mut self, event: ConnectionEvent)

Process ConnectionEvents generated by the associated Endpoint

Will execute protocol logic upon receipt of a connection event, in turn preparing signals (including application Events, EndpointEvents and outgoing datagrams) that should be extracted through the relevant methods.

-
Source

pub fn handle_timeout(&mut self, now: Instant)

Process timer expirations

+
Source

pub fn handle_timeout(&mut self, now: Instant)

Process timer expirations

Executes protocol logic, potentially preparing signals (including application Events, EndpointEvents and outgoing datagrams) that should be extracted through the relevant methods.

It is most efficient to call this immediately after the system clock reaches the latest Instant that was output by poll_timeout; however spurious extra calls will simply no-op and therefore are safe.

-
Source

pub fn close(&mut self, now: Instant, error_code: VarInt, reason: Bytes)

Close a connection immediately

+
Source

pub fn close(&mut self, now: Instant, error_code: VarInt, reason: Bytes)

Close a connection immediately

This does not ensure delivery of outstanding data. It is the application’s responsibility to call this only when all important communications have been completed, e.g. by calling SendStream::finish on outstanding streams and waiting for the corresponding StreamEvent::Finished event.

If Streams::send_streams returns 0, all outstanding stream data has been delivered. There may still be data from the peer that has not been received.

-
Source

pub fn datagrams(&mut self) -> Datagrams<'_>

Control datagrams

-
Source

pub fn stats(&mut self) -> ConnectionStats

Returns connection statistics

-
Source

pub fn path_stats(&mut self, path_id: PathId) -> Option<PathStats>

Returns path statistics

-
Source

pub fn ping(&mut self)

Ping the remote endpoint

+
Source

pub fn datagrams(&mut self) -> Datagrams<'_>

Control datagrams

+
Source

pub fn stats(&mut self) -> ConnectionStats

Returns connection statistics

+
Source

pub fn path_stats(&mut self, path_id: PathId) -> Option<PathStats>

Returns path statistics

+
Source

pub fn ping(&mut self)

Ping the remote endpoint

Causes an ACK-eliciting packet to be transmitted on the connection.

-
Source

pub fn ping_path(&mut self, path: PathId) -> Result<(), ClosedPath>

Ping the remote endpoint over a specific path

+
Source

pub fn ping_path(&mut self, path: PathId) -> Result<(), ClosedPath>

Ping the remote endpoint over a specific path

Causes an ACK-eliciting packet to be transmitted on the path.

-
Source

pub fn force_key_update(&mut self)

Update traffic keys spontaneously

+
Source

pub fn force_key_update(&mut self)

Update traffic keys spontaneously

This can be useful for testing key updates, as they otherwise only happen infrequently.

-
Source

pub fn crypto_session(&self) -> &dyn Session

Get a session reference

-
Source

pub fn is_handshaking(&self) -> bool

Whether the connection is in the process of being established

+
Source

pub fn crypto_session(&self) -> &dyn Session

Get a session reference

+
Source

pub fn is_handshaking(&self) -> bool

Whether the connection is in the process of being established

If this returns false, the connection may be either established or closed, signaled by the emission of a Connected or ConnectionLost message respectively.

-
Source

pub fn is_closed(&self) -> bool

Whether the connection is closed

+
Source

pub fn is_closed(&self) -> bool

Whether the connection is closed

Closed connections cannot transport any further data. A connection becomes closed when either peer application intentionally closes it, or when either transport layer detects an error such as a time-out or certificate validation failure.

A ConnectionLost event is emitted with details when the connection becomes closed.

-
Source

pub fn is_drained(&self) -> bool

Whether there is no longer any need to keep the connection around

+
Source

pub fn is_drained(&self) -> bool

Whether there is no longer any need to keep the connection around

Closed connections become drained after a brief timeout to absorb any remaining in-flight packets from the peer. All drained connections have been closed.

-
Source

pub fn accepted_0rtt(&self) -> bool

For clients, if the peer accepted the 0-RTT data packets

+
Source

pub fn accepted_0rtt(&self) -> bool

For clients, if the peer accepted the 0-RTT data packets

The value is meaningless until after the handshake completes.

-
Source

pub fn has_0rtt(&self) -> bool

Whether 0-RTT is/was possible during the handshake

-
Source

pub fn has_pending_retransmits(&self) -> bool

Whether there are any pending retransmits

-
Source

pub fn side(&self) -> Side

Look up whether we’re the client or server of this Connection

-
Source

pub fn path_observed_address( +

Source

pub fn has_0rtt(&self) -> bool

Whether 0-RTT is/was possible during the handshake

+
Source

pub fn has_pending_retransmits(&self) -> bool

Whether there are any pending retransmits

+
Source

pub fn side(&self) -> Side

Look up whether we’re the client or server of this Connection

+
Source

pub fn path_observed_address( &self, path_id: PathId, ) -> Result<Option<SocketAddr>, ClosedPath>

Get the address observed by the remote over the given path

-
Source

pub fn rtt(&self, path_id: PathId) -> Option<Duration>

Current best estimate of this connection’s latency (round-trip-time)

-
Source

pub fn congestion_state(&self, path_id: PathId) -> Option<&dyn Controller>

Current state of this connection’s congestion controller, for debugging purposes

-
Source

pub fn set_max_concurrent_streams(&mut self, dir: Dir, count: VarInt)

Modify the number of remotely initiated streams that may be concurrently open

+
Source

pub fn rtt(&self, path_id: PathId) -> Option<Duration>

Current best estimate of this connection’s latency (round-trip-time)

+
Source

pub fn congestion_state(&self, path_id: PathId) -> Option<&dyn Controller>

Current state of this connection’s congestion controller, for debugging purposes

+
Source

pub fn set_max_concurrent_streams(&mut self, dir: Dir, count: VarInt)

Modify the number of remotely initiated streams that may be concurrently open

No streams may be opened by the peer unless fewer than count are already open. Large counts increase both minimum and worst-case memory consumption.

-
Source

pub fn set_max_concurrent_paths( +

Source

pub fn set_max_concurrent_paths( &mut self, now: Instant, count: NonZeroU32, @@ -185,36 +185,36 @@ actively reduce paths they must be closed using TransportConfig) this can not enable multipath and will fail.

-

Source

pub fn max_concurrent_streams(&self, dir: Dir) -> u64

Current number of remotely initiated streams that may be concurrently open

+
Source

pub fn max_concurrent_streams(&self, dir: Dir) -> u64

Current number of remotely initiated streams that may be concurrently open

If the target for this limit is reduced using set_max_concurrent_streams, it will not change immediately, even if fewer streams are open. Instead, it will decrement by one for each time a remotely initiated stream of matching directionality is closed.

-
Source

pub fn set_send_window(&mut self, send_window: u64)

See TransportConfig::send_window()

-
Source

pub fn set_receive_window(&mut self, receive_window: VarInt)

See TransportConfig::receive_window()

-
Source

pub fn is_multipath_negotiated(&self) -> bool

Whether the Multipath for QUIC extension is enabled.

+
Source

pub fn set_send_window(&mut self, send_window: u64)

See TransportConfig::send_window()

+
Source

pub fn set_receive_window(&mut self, receive_window: VarInt)

See TransportConfig::receive_window()

+
Source

pub fn is_multipath_negotiated(&self) -> bool

Whether the Multipath for QUIC extension is enabled.

Multipath is only enabled after the handshake is completed and if it was enabled by both peers.

-
Source

pub fn local_address_changed(&mut self)

Handle a change in the local address, i.e. an active migration

-
Source

pub fn current_mtu(&self) -> u16

Storage size required for the largest packet that can be transmitted on all currently +

Source

pub fn local_address_changed(&mut self)

Handle a change in the local address, i.e. an active migration

+
Source

pub fn current_mtu(&self) -> u16

Storage size required for the largest packet that can be transmitted on all currently available paths

Buffers passed to Connection::poll_transmit should be at least this large.

When multipath is enabled, this value is the minimum MTU across all available paths.

-
Source

pub fn add_nat_traversal_address( +

Source

pub fn add_nat_traversal_address( &mut self, address: SocketAddr, ) -> Result<(), Error>

Add addresses the local endpoint considers are reachable for nat traversal

-
Source

pub fn remove_nat_traversal_address( +

Source

pub fn remove_nat_traversal_address( &mut self, address: SocketAddr, ) -> Result<(), Error>

Removes an address the endpoing no longer considers reachable for nat traversal

Addresses not present in the set will be silently ignored.

-
Source

pub fn get_local_nat_traversal_addresses( +

Source

pub fn get_local_nat_traversal_addresses( &self, ) -> Result<Vec<SocketAddr>, Error>

Get the current local nat traversal addresses

-
Source

pub fn get_remote_nat_traversal_addresses( +

Source

pub fn get_remote_nat_traversal_addresses( &self, ) -> Result<Vec<SocketAddr>, Error>

Get the currently advertised nat traversal addresses by the server

-
Source

pub fn initiate_nat_traversal_round( +

Source

pub fn initiate_nat_traversal_round( &mut self, now: Instant, ) -> Result<Vec<SocketAddr>, Error>

Initiates a new nat traversal round

@@ -224,7 +224,7 @@ initiated, the previous one is cancelled, and paths that have not been opened ar

Returns the server addresses that are now being probed. If addresses fail due to spurious errors, these might succeed later and not be returned in this set.

-

Trait Implementations§

Source§

impl Debug for Connection

Source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl !Freeze for Connection

§

impl !RefUnwindSafe for Connection

§

impl Send for Connection

§

impl Sync for Connection

§

impl Unpin for Connection

§

impl !UnwindSafe for Connection

Blanket Implementations§

Source§

impl<T> Any for T
where +

Trait Implementations§

Source§

impl Debug for Connection

Source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl !Freeze for Connection

§

impl !RefUnwindSafe for Connection

§

impl Send for Connection

§

impl Sync for Connection

§

impl Unpin for Connection

§

impl !UnwindSafe for Connection

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

diff --git a/pr/323/docs/iroh_quinn_proto/struct.ConnectionClose.html b/pr/323/docs/iroh_quinn_proto/struct.ConnectionClose.html index 1fd411a26..94c89dd15 100644 --- a/pr/323/docs/iroh_quinn_proto/struct.ConnectionClose.html +++ b/pr/323/docs/iroh_quinn_proto/struct.ConnectionClose.html @@ -1,4 +1,4 @@ -ConnectionClose in iroh_quinn_proto - Rust

ConnectionClose

iroh_quinn_proto

Struct ConnectionClose 

Source 
pub struct ConnectionClose {
+ConnectionClose in iroh_quinn_proto - Rust
ConnectionClose
iroh_quinn_proto
Struct ConnectionClose 
Source 
pub struct ConnectionClose {
     pub error_code: TransportErrorCode,
     pub frame_type: MaybeFrame,
     pub reason: Bytes,
@@ -6,8 +6,8 @@

Fields§

§error_code: TransportErrorCode

Class of error as encoded in the specification

§frame_type: MaybeFrame

Type of frame that caused the close

§reason: Bytes

Human-readable reason for the close

-

Trait Implementations§

Source§

impl Clone for ConnectionClose

Source§

fn clone(&self) -> ConnectionClose

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
Source§

impl Debug for ConnectionClose

Source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
Source§

impl Display for ConnectionClose

Source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
Source§

impl From<Error> for ConnectionClose

Source§

fn from(x: TransportError) -> Self

Converts to this type from the input type.
Source§

impl PartialEq for ConnectionClose

Source§

fn eq(&self, other: &ConnectionClose) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, -and should not be overridden without very good reason.
Source§

impl Eq for ConnectionClose

Source§

impl StructuralPartialEq for ConnectionClose

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where +

Trait Implementations§

Source§

impl Clone for ConnectionClose

Source§

fn clone(&self) -> ConnectionClose

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
Source§

impl Debug for ConnectionClose

Source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
Source§

impl Display for ConnectionClose

Source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
Source§

impl From<Error> for ConnectionClose

Source§

fn from(x: TransportError) -> Self

Converts to this type from the input type.
Source§

impl PartialEq for ConnectionClose

Source§

fn eq(&self, other: &ConnectionClose) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, +and should not be overridden without very good reason.
Source§

impl Eq for ConnectionClose

Source§

impl StructuralPartialEq for ConnectionClose

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where diff --git a/pr/323/docs/iroh_quinn_proto/struct.ConnectionStats.html b/pr/323/docs/iroh_quinn_proto/struct.ConnectionStats.html index 8059b91e7..26e65f83b 100644 --- a/pr/323/docs/iroh_quinn_proto/struct.ConnectionStats.html +++ b/pr/323/docs/iroh_quinn_proto/struct.ConnectionStats.html @@ -1,4 +1,4 @@ -ConnectionStats in iroh_quinn_proto - Rust

ConnectionStats

iroh_quinn_proto

Struct ConnectionStats 

Source 
#[non_exhaustive]
pub struct ConnectionStats {
+ConnectionStats in iroh_quinn_proto - Rust
ConnectionStats
iroh_quinn_proto
Struct ConnectionStats 
Source 
#[non_exhaustive]
pub struct ConnectionStats {
     pub udp_tx: UdpStats,
     pub udp_rx: UdpStats,
     pub frame_tx: FrameStats,
@@ -8,7 +8,7 @@
 
§udp_rx: UdpStats
Statistics about UDP datagrams received on a connection

 
§frame_tx: FrameStats
Statistics about frames transmitted on a connection

 
§frame_rx: FrameStats
Statistics about frames received on a connection

-
Trait Implementations§
Source§
impl Clone for ConnectionStats
Source§
fn clone(&self) -> ConnectionStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Default for ConnectionStats
Source§
fn default() -> ConnectionStats
Returns the “default value” for a type. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ConnectionStats
Source§
fn clone(&self) -> ConnectionStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ConnectionStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Default for ConnectionStats
Source§
fn default() -> ConnectionStats
Returns the “default value” for a type. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.Datagram.html b/pr/323/docs/iroh_quinn_proto/struct.Datagram.html
index 1ffdec640..60895c32c 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.Datagram.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.Datagram.html
@@ -1,8 +1,8 @@
-Datagram in iroh_quinn_proto - Rust
Datagram
iroh_quinn_proto
Struct Datagram 
Source 
pub struct Datagram {
+Datagram in iroh_quinn_proto - Rust
Datagram
iroh_quinn_proto
Struct Datagram 
Source 
pub struct Datagram {
     pub data: Bytes,
 }
Expand description
An unreliable datagram

 
Fields§
§data: Bytes
Payload

-
Trait Implementations§
Source§
impl Clone for Datagram
Source§
fn clone(&self) -> Datagram
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for Datagram
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Encodable for Datagram
Source§
fn encode<B: BufMut>(&self, out: &mut B)
Append the encoding of self to the provided buffer.
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for Datagram
Source§
fn clone(&self) -> Datagram
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for Datagram
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for Datagram
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Encodable for Datagram
Source§
fn encode<B: BufMut>(&self, out: &mut B)
Append the encoding of self to the provided buffer.
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
@@ -21,7 +21,8 @@ otherwise. Right variant of Either<Self, Self>
 otherwise. Read more
Source§
impl<T> ToOwned for T
where
-    T: Clone,
Source§
type Owned = T
The resulting type after obtaining ownership.
Source§
fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
Source§
fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more
Source§
impl<T, U> TryFrom<U> for T
where
+    T: Clone,
Source§
type Owned = T
The resulting type after obtaining ownership.
Source§
fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
Source§
fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more
Source§
impl<T> ToString for T
where
+    T: Display + ?Sized,
Source§
fn to_string(&self) -> String
Converts the given value to a String. Read more
Source§
impl<T, U> TryFrom<U> for T
where
     U: Into<T>,
Source§
type Error = Infallible
The type returned in the event of a conversion error.
Source§
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
Source§
impl<T, U> TryInto<U> for T
where
     U: TryFrom<T>,
Source§
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
Source§
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.
§
impl<V, T> VZip<V> for T
where
     V: MultiLane<T>,
§
fn vzip(self) -> V
§
impl<T> WithSubscriber for T
§
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.DatagramInfo.html b/pr/323/docs/iroh_quinn_proto/struct.DatagramInfo.html
index 4f9a0d6e9..49f57593d 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.DatagramInfo.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.DatagramInfo.html
@@ -1,5 +1,5 @@
-DatagramInfo in iroh_quinn_proto - Rust
DatagramInfo
iroh_quinn_proto
Struct DatagramInfo 
Source 
pub struct DatagramInfo(/* private fields */);
Trait Implementations§
Source§
impl Clone for DatagramInfo
Source§
fn clone(&self) -> DatagramInfo
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for DatagramInfo
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for DatagramInfo
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for DatagramInfo
Source§
fn eq(&self, other: &DatagramInfo) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for DatagramInfo
Source§
impl Eq for DatagramInfo
Source§
impl StructuralPartialEq for DatagramInfo
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+DatagramInfo in iroh_quinn_proto - Rust
DatagramInfo
iroh_quinn_proto
Struct DatagramInfo 
Source 
pub struct DatagramInfo(/* private fields */);
Trait Implementations§
Source§
impl Clone for DatagramInfo
Source§
fn clone(&self) -> DatagramInfo
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for DatagramInfo
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for DatagramInfo
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for DatagramInfo
Source§
fn eq(&self, other: &DatagramInfo) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for DatagramInfo
Source§
impl Eq for DatagramInfo
Source§
impl StructuralPartialEq for DatagramInfo
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.FixedLengthConnectionIdParser.html b/pr/323/docs/iroh_quinn_proto/struct.FixedLengthConnectionIdParser.html
index 3a71a6b61..40e8449b3 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.FixedLengthConnectionIdParser.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.FixedLengthConnectionIdParser.html
@@ -1,6 +1,6 @@
-FixedLengthConnectionIdParser in iroh_quinn_proto - Rust
FixedLengthConnectionIdParser
iroh_quinn_proto
Struct FixedLengthConnectionIdParser 
Source 
pub struct FixedLengthConnectionIdParser { /* private fields */ }
Expand description
A ConnectionIdParser implementation that assumes the connection ID is of fixed length

-
Implementations§
Source§
impl FixedLengthConnectionIdParser
Source
pub fn new(expected_len: usize) -> Self
Create a new instance of FixedLengthConnectionIdParser

-
Trait Implementations§
Source§
impl ConnectionIdParser for FixedLengthConnectionIdParser
Source§
fn parse(&self, buffer: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError>
Parse a connection id from given buffer
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+FixedLengthConnectionIdParser in iroh_quinn_proto - Rust
FixedLengthConnectionIdParser
iroh_quinn_proto
Struct FixedLengthConnectionIdParser 
Source 
pub struct FixedLengthConnectionIdParser { /* private fields */ }
Expand description
A ConnectionIdParser implementation that assumes the connection ID is of fixed length

+
Implementations§
Source§
impl FixedLengthConnectionIdParser
Source
pub fn new(expected_len: usize) -> Self
Create a new instance of FixedLengthConnectionIdParser

+
Trait Implementations§
Source§
impl ConnectionIdParser for FixedLengthConnectionIdParser
Source§
fn parse(&self, buffer: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError>
Parse a connection id from given buffer
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> From<T> for T
Source§
fn from(t: T) -> T
Returns the argument unchanged.

diff --git a/pr/323/docs/iroh_quinn_proto/struct.FrameStats.html b/pr/323/docs/iroh_quinn_proto/struct.FrameStats.html
index fcbc9fe92..dea14a19d 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.FrameStats.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.FrameStats.html
@@ -37,7 +37,7 @@
     pub reach_out: u64,
     pub remove_address: u64,
 
}
Expand description
Number of frames transmitted or received of each frame type

-
Fields (Non-exhaustive)§
This struct is marked as non-exhaustive
Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.
§acks: u64§path_acks: u64§ack_frequency: u64§crypto: u64§connection_close: u64§data_blocked: u64§datagram: u64§handshake_done: u8§immediate_ack: u64§max_data: u64§max_stream_data: u64§max_streams_bidi: u64§max_streams_uni: u64§new_connection_id: u64§path_new_connection_id: u64§new_token: u64§path_challenge: u64§path_response: u64§ping: u64§reset_stream: u64§retire_connection_id: u64§path_retire_connection_id: u64§stream_data_blocked: u64§streams_blocked_bidi: u64§streams_blocked_uni: u64§stop_sending: u64§stream: u64§observed_addr: u64§path_abandon: u64§path_status_available: u64§path_status_backup: u64§max_path_id: u64§paths_blocked: u64§path_cids_blocked: u64§add_address: u64§reach_out: u64§remove_address: u64
Trait Implementations§
Source§
impl Clone for FrameStats
Source§
fn clone(&self) -> FrameStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Default for FrameStats
Source§
fn default() -> FrameStats
Returns the “default value” for a type. Read more
Source§
impl Copy for FrameStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Fields (Non-exhaustive)§
This struct is marked as non-exhaustive
Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.
§acks: u64§path_acks: u64§ack_frequency: u64§crypto: u64§connection_close: u64§data_blocked: u64§datagram: u64§handshake_done: u8§immediate_ack: u64§max_data: u64§max_stream_data: u64§max_streams_bidi: u64§max_streams_uni: u64§new_connection_id: u64§path_new_connection_id: u64§new_token: u64§path_challenge: u64§path_response: u64§ping: u64§reset_stream: u64§retire_connection_id: u64§path_retire_connection_id: u64§stream_data_blocked: u64§streams_blocked_bidi: u64§streams_blocked_uni: u64§stop_sending: u64§stream: u64§observed_addr: u64§path_abandon: u64§path_status_available: u64§path_status_backup: u64§max_path_id: u64§paths_blocked: u64§path_cids_blocked: u64§add_address: u64§reach_out: u64§remove_address: u64
Trait Implementations§
Source§
impl Clone for FrameStats
Source§
fn clone(&self) -> FrameStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for FrameStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Default for FrameStats
Source§
fn default() -> FrameStats
Returns the “default value” for a type. Read more
Source§
impl Copy for FrameStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.InvalidFrameId.html b/pr/323/docs/iroh_quinn_proto/struct.InvalidFrameId.html
index 80b456be4..4784b11cb 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.InvalidFrameId.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.InvalidFrameId.html
@@ -1,6 +1,6 @@
-InvalidFrameId in iroh_quinn_proto - Rust
InvalidFrameId
iroh_quinn_proto
Struct InvalidFrameId 
Source 
pub struct InvalidFrameId(/* private fields */);
Expand description
Encounter a frame ID that was not valid.

-
Trait Implementations§
Source§
impl Debug for InvalidFrameId
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for InvalidFrameId
Source§
fn eq(&self, other: &InvalidFrameId) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Eq for InvalidFrameId
Source§
impl StructuralPartialEq for InvalidFrameId
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+InvalidFrameId in iroh_quinn_proto - Rust
InvalidFrameId
iroh_quinn_proto
Struct InvalidFrameId 
Source 
pub struct InvalidFrameId(/* private fields */);
Expand description
Encounter a frame ID that was not valid.

+
Trait Implementations§
Source§
impl Debug for InvalidFrameId
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for InvalidFrameId
Source§
fn eq(&self, other: &InvalidFrameId) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Eq for InvalidFrameId
Source§
impl StructuralPartialEq for InvalidFrameId
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§
impl<Q, K> Equivalent<K> for Q
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.MultipathNotNegotiated.html b/pr/323/docs/iroh_quinn_proto/struct.MultipathNotNegotiated.html
index e277dc7bf..70fa3c85f 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.MultipathNotNegotiated.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.MultipathNotNegotiated.html
@@ -1,5 +1,5 @@
-MultipathNotNegotiated in iroh_quinn_proto - Rust
MultipathNotNegotiated
iroh_quinn_proto
Struct MultipathNotNegotiated 
Source 
pub struct MultipathNotNegotiated { /* private fields */ }
Expand description
Error when the multipath extension was not negotiated, but attempted to be used.

-
Trait Implementations§
Source§
impl Clone for MultipathNotNegotiated
Source§
fn clone(&self) -> MultipathNotNegotiated
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for MultipathNotNegotiated
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for MultipathNotNegotiated
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for MultipathNotNegotiated
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl Copy for MultipathNotNegotiated
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+MultipathNotNegotiated in iroh_quinn_proto - Rust
MultipathNotNegotiated
iroh_quinn_proto
Struct MultipathNotNegotiated 
Source 
pub struct MultipathNotNegotiated { /* private fields */ }
Expand description
Error when the multipath extension was not negotiated, but attempted to be used.

+
Trait Implementations§
Source§
impl Clone for MultipathNotNegotiated
Source§
fn clone(&self) -> MultipathNotNegotiated
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for MultipathNotNegotiated
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for MultipathNotNegotiated
Source§
fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for MultipathNotNegotiated
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl Copy for MultipathNotNegotiated
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.PathStats.html b/pr/323/docs/iroh_quinn_proto/struct.PathStats.html
index 76d16c997..f6e358156 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.PathStats.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.PathStats.html
@@ -1,4 +1,4 @@
-PathStats in iroh_quinn_proto - Rust
PathStats
iroh_quinn_proto
Struct PathStats 
Source 
#[non_exhaustive]
pub struct PathStats {
+PathStats in iroh_quinn_proto - Rust
PathStats
iroh_quinn_proto
Struct PathStats 
Source 
#[non_exhaustive]
pub struct PathStats {
     pub rtt: Duration,
     pub cwnd: u64,
     pub congestion_events: u64,
@@ -21,8 +21,8 @@
 lost_bytes)

 
§black_holes_detected: u64
The number of times a black hole was detected in the path

 
§current_mtu: u16
Largest UDP payload size the path currently supports

-
Trait Implementations§
Source§
impl Clone for PathStats
Source§
fn clone(&self) -> PathStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Default for PathStats
Source§
fn default() -> PathStats
Returns the “default value” for a type. Read more
Source§
impl PartialEq for PathStats
Source§
fn eq(&self, other: &PathStats) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for PathStats
Source§
impl Eq for PathStats
Source§
impl StructuralPartialEq for PathStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for PathStats
Source§
fn clone(&self) -> PathStats
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for PathStats
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Default for PathStats
Source§
fn default() -> PathStats
Returns the “default value” for a type. Read more
Source§
impl PartialEq for PathStats
Source§
fn eq(&self, other: &PathStats) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for PathStats
Source§
impl Eq for PathStats
Source§
impl StructuralPartialEq for PathStats
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.ProtectedInitialHeader.html b/pr/323/docs/iroh_quinn_proto/struct.ProtectedInitialHeader.html
index 6db7877fc..f367ad43f 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.ProtectedInitialHeader.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.ProtectedInitialHeader.html
@@ -1,4 +1,4 @@
-ProtectedInitialHeader in iroh_quinn_proto - Rust
ProtectedInitialHeader
iroh_quinn_proto
Struct ProtectedInitialHeader 
Source 
pub struct ProtectedInitialHeader {
+ProtectedInitialHeader in iroh_quinn_proto - Rust
ProtectedInitialHeader
iroh_quinn_proto
Struct ProtectedInitialHeader 
Source 
pub struct ProtectedInitialHeader {
     pub dst_cid: ConnectionId,
     pub src_cid: ConnectionId,
     pub token_pos: Range<usize>,
@@ -10,7 +10,7 @@
 
§token_pos: Range<usize>
The position of a token in the packet buffer

 
§len: u64
Length of the packet payload

 
§version: u32
QUIC version

-
Trait Implementations§
Source§
impl Clone for ProtectedInitialHeader
Source§
fn clone(&self) -> ProtectedInitialHeader
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ProtectedInitialHeader
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+
Trait Implementations§
Source§
impl Clone for ProtectedInitialHeader
Source§
fn clone(&self) -> ProtectedInitialHeader
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for ProtectedInitialHeader
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.StreamInfo.html b/pr/323/docs/iroh_quinn_proto/struct.StreamInfo.html
index 149c06098..6d6a3cfbb 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.StreamInfo.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.StreamInfo.html
@@ -1,5 +1,5 @@
-StreamInfo in iroh_quinn_proto - Rust
StreamInfo
iroh_quinn_proto
Struct StreamInfo 
Source 
pub struct StreamInfo(/* private fields */);
Trait Implementations§
Source§
impl Clone for StreamInfo
Source§
fn clone(&self) -> StreamInfo
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for StreamInfo
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for StreamInfo
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for StreamInfo
Source§
fn eq(&self, other: &StreamInfo) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
-and should not be overridden without very good reason.
Source§
impl Copy for StreamInfo
Source§
impl Eq for StreamInfo
Source§
impl StructuralPartialEq for StreamInfo
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
+StreamInfo in iroh_quinn_proto - Rust
StreamInfo
iroh_quinn_proto
Struct StreamInfo 
Source 
pub struct StreamInfo(/* private fields */);
Trait Implementations§
Source§
impl Clone for StreamInfo
Source§
fn clone(&self) -> StreamInfo
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for StreamInfo
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for StreamInfo
Source§
fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl PartialEq for StreamInfo
Source§
fn eq(&self, other: &StreamInfo) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+and should not be overridden without very good reason.
Source§
impl Copy for StreamInfo
Source§
impl Eq for StreamInfo
Source§
impl StructuralPartialEq for StreamInfo
Auto Trait Implementations§
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
     T: ?Sized,
Source§
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§
impl<T> CloneToUninit for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/struct.TransportError.html b/pr/323/docs/iroh_quinn_proto/struct.TransportError.html
index 37d14cf76..a3e4c6b38 100644
--- a/pr/323/docs/iroh_quinn_proto/struct.TransportError.html
+++ b/pr/323/docs/iroh_quinn_proto/struct.TransportError.html
@@ -11,7 +11,7 @@
 
§reason: String
Human-readable explanation of the reason

 
§crypto: Option<Arc<dyn Error + Send + Sync>>
An underlying crypto (e.g. TLS) layer error

 
Implementations§
Source§
impl Error
Source
pub fn new(code: Code, reason: String) -> Self
Construct an error with a code and a reason

-
Trait Implementations§
Source§
impl Clone for Error
Source§
fn clone(&self) -> Error
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for Error
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for Error
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for Error
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<Error> for ConnectionClose
Source§
fn from(x: TransportError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for ConnectionError
Source§
fn from(source: TransportError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for TransportError
Source§
fn from(e: Error) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for Error
Source§
fn eq(&self, other: &Self) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
+
Trait Implementations§
Source§
impl Clone for Error
Source§
fn clone(&self) -> Error
Returns a duplicate of the value. Read more
1.0.0 · Source§
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
Source§
impl Debug for Error
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Display for Error
Source§
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
Source§
impl Error for Error
1.30.0 · Source§
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
 Read more
1.0.0 · Source§
fn cause(&self) -> Option<&dyn Error>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
Source§
fn provide<'a>(&'a self, request: &mut Request<'a>)
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
Source§
impl From<Error> for ConnectionClose
Source§
fn from(x: TransportError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for ConnectionError
Source§
fn from(source: TransportError) -> Self
Converts to this type from the input type.
Source§
impl From<Error> for TransportError
Source§
fn from(e: Error) -> Self
Converts to this type from the input type.
Source§
impl PartialEq for Error
Source§
fn eq(&self, other: &Self) -> bool
Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§
fn ne(&self, other: &Rhs) -> bool
Tests for !=. The default implementation is almost always sufficient,
 and should not be overridden without very good reason.
Source§
impl Eq for Error
Auto Trait Implementations§
§
impl Freeze for Error
§
impl !RefUnwindSafe for Error
§
impl Send for Error
§
impl Sync for Error
§
impl Unpin for Error
§
impl !UnwindSafe for Error
Blanket Implementations§
Source§
impl<T> Any for T
where
     T: 'static + ?Sized,
Source§
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
Source§
impl<T> Borrow<T> for T
where
     T: ?Sized,
Source§
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
Source§
impl<T> BorrowMut<T> for T
where
diff --git a/pr/323/docs/iroh_quinn_proto/trait.ConnectionIdParser.html b/pr/323/docs/iroh_quinn_proto/trait.ConnectionIdParser.html
index e3357d299..1d64febb0 100644
--- a/pr/323/docs/iroh_quinn_proto/trait.ConnectionIdParser.html
+++ b/pr/323/docs/iroh_quinn_proto/trait.ConnectionIdParser.html
@@ -1,9 +1,9 @@
-ConnectionIdParser in iroh_quinn_proto - Rust
ConnectionIdParser
iroh_quinn_proto
Trait ConnectionIdParser 
Source 
pub trait ConnectionIdParser {
+ConnectionIdParser in iroh_quinn_proto - Rust
ConnectionIdParser
iroh_quinn_proto
Trait ConnectionIdParser 
Source 
pub trait ConnectionIdParser {
     // Required method
     fn parse(
         &self,
         buf: &mut dyn Buf,
     ) -> Result<ConnectionId, PacketDecodeError>;
 }
Expand description
Parse connection id in short header packet

-
Required Methods§
Source
fn parse(&self, buf: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError>
Parse a connection id from given buffer

-
Implementors§

\ No newline at end of file
+
Required Methods§
Source
fn parse(&self, buf: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError>
Parse a connection id from given buffer

+
Implementors§

\ No newline at end of file
diff --git a/pr/323/docs/search.index/00037727d41b.js b/pr/323/docs/search.index/00037727d41b.js
deleted file mode 100644
index 8837e0256..000000000
--- a/pr/323/docs/search.index/00037727d41b.js
+++ /dev/null
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deleted file mode 100644
index 6d710e4f0..000000000
--- a/pr/323/docs/search.index/001277e366cd.js
+++ /dev/null
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new file mode 100644
index 000000000..74615fac7
--- /dev/null
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@@ -0,0 +1 @@
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new file mode 100644
index 000000000..1af0a51c6
--- /dev/null
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deleted file mode 100644
index 55192160c..000000000
--- a/pr/323/docs/search.index/0095923ba754.js
+++ /dev/null
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index 7215dbc7c..000000000
--- a/pr/323/docs/search.index/00f09416a63d.js
+++ /dev/null
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deleted file mode 100644
index 461b51cd7..000000000
--- a/pr/323/docs/search.index/00f55497d47e.js
+++ /dev/null
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new file mode 100644
index 000000000..b89e65a0c
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new file mode 100644
index 000000000..a269510aa
--- /dev/null
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diff --git a/pr/323/docs/search.index/024f75b34b20.js b/pr/323/docs/search.index/024f75b34b20.js
deleted file mode 100644
index fc0587fc7..000000000
--- a/pr/323/docs/search.index/024f75b34b20.js
+++ /dev/null
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diff --git a/pr/323/docs/search.index/0259b3ee8225.js b/pr/323/docs/search.index/0259b3ee8225.js
new file mode 100644
index 000000000..4c126e0cb
--- /dev/null
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diff --git a/pr/323/docs/search.index/7eff5365274d.js b/pr/323/docs/search.index/7eff5365274d.js
new file mode 100644
index 000000000..dbb51f732
--- /dev/null
+++ b/pr/323/docs/search.index/7eff5365274d.js
@@ -0,0 +1 @@
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diff --git a/pr/323/docs/search.index/7f51efe5046e.js b/pr/323/docs/search.index/7f51efe5046e.js
deleted file mode 100644
index 942753c2d..000000000
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+++ /dev/null
@@ -1 +0,0 @@
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diff --git a/pr/323/docs/search.index/7fc1930a76ba.js b/pr/323/docs/search.index/7fc1930a76ba.js
deleted file mode 100644
index 8d3d7ac56..000000000
--- a/pr/323/docs/search.index/7fc1930a76ba.js
+++ /dev/null
@@ -1 +0,0 @@
-rn_("AQABoJAAABLwaPK6EgAAAQDzAgFk8nkHAAABAAECADswAAABAAAFAAEA9hMFAPMLAW07MAAAAQAABQABALcTBQAjgAKwIAzvAAFhbwECAPNRCQAADwMBAAGKArAAE1cAAbAAE1kAATQ2I4ECoDAAAAyEZXIBgAKwQBGSAAFFmRY6ajdjdbcGAACHsBAP/wABsFAT0wABEVEJ9SUFAAAKALQAAQArBw==")
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diff --git a/pr/323/docs/search.index/entry/23e89d8be7e8.js b/pr/323/docs/search.index/entry/23e89d8be7e8.js
deleted file mode 100644
index 7a877cc5e..000000000
--- a/pr/323/docs/search.index/entry/23e89d8be7e8.js
+++ /dev/null
@@ -1 +0,0 @@
-rd_("Ah[3938,15,3939,0,117,0,0]Ak[4725,15,4726,4726,118,0,0]Ai[3938,15,3939,0,4124,0,0]Al[4725,15,4726,1930,4125,0,0]Al[4431,15,4432,4432,4126,0,0]Al[4725,15,1836,1836,1589,0,0]Ao[1361,13,1362,1362,3970,3132,0]Ao[3938,13,3939,3702,4767,3132,0]Ao[3938,13,3939,4074,4391,3132,0]Ao[3938,13,3939,4074,3140,3132,0]Ao[3938,13,3939,4074,3327,3132,0]Ao[3938,13,3939,4074,4390,3132,0]Ao[3938,13,3939,4079,3345,3132,0]Ao[3938,13,3939,4079,4158,3132,0]Al[3938,13,3939,0,1599,3132,0]Al[3938,13,3939,0,4926,3132,0]Al[3938,13,3939,0,1320,3132,0]Al[3938,13,3939,0,1582,3132,0]Al[3938,13,3939,0,3137,3132,0]Al[3938,13,3939,0,2010,3132,0]Al[3938,13,3939,0,4110,3132,0]Al[3938,13,3939,0,4485,3132,0]Al[3938,13,3939,0,3983,3132,0]Al[3938,13,3939,0,3973,3132,0]Al[3938,13,3939,0,3120,3132,0]Al[3938,13,3939,0,4482,3132,0]Al[3938,13,3939,0,4670,3132,0]Al[3938,13,3939,0,4116,3132,0]Al[3938,13,3939,0,4119,3132,0]Al[3938,13,3939,0,4124,3132,0]Al[3938,13,3939,0,4825,3132,0]Ak[3938,13,3939,0,481,3132,0]Ak[3938,13,3939,0,117,3132,0]Al[3938,13,3939,0,2414,3132,0]Al[3938,13,1840,0,5072,3132,0]Al[3938,13,1919,0,1337,3132,0]Ao[4725,13,4726,1952,1600,3132,0]Ao[4725,13,4726,1952,4927,3132,0]Ao[4725,13,4726,3156,1321,3132,0]Ao[4725,13,4726,3165,4768,3132,0]Ao[4725,13,4726,1522,1583,3132,0]Ao[4725,13,4726,1522,3321,3132,0]Ao[4725,13,4726,1522,3136,3132,0]Ao[4725,13,4726,1522,4822,3132,0]Ao[4725,13,4726,1522,3296,3132,0]Ao[4725,13,4726,1538,3138,3132,0]Ao[4725,13,4726,1071,3141,3132,0]Ao[4725,13,4726,1071,4280,3132,0]Ao[4725,13,4726,1076,2011,3132,0]Ao[4725,13,4726,1076,3346,3132,0]Ao[4725,13,4726,1076,3982,3132,0]Ao[4725,13,4726,2144,4000,3132,0]Ao[4725,13,4726,2144,4392,3132,0]Ao[4725,13,4726,2144,4114,3132,0]Ao[4725,13,4726,3703,4486,3132,0]Ao[4725,13,4726,3703,3133,3132,0]Ao[4725,13,4726,3703,4358,3132,0]Ao[4725,13,4726,3283,3984,3132,0]Ao[4725,13,4726,1838,3974,3132,0]Ao[4725,13,4726,1512,3121,3132,0]Ao[4725,13,4726,1512,4373,3132,0]Ao[4725,13,4726,1512,3313,3132,0]Ao[4725,13,4726,1512,3335,3132,0]Ao[4725,13,4726,1512,4121,3132,0]Ao[4725,13,4726,1512,4484,3132,0]Ao[4725,13,4726,1512,4672,3132,0]Ao[4725,13,4726,2437,4676,3132,0]Ao[4725,13,4726,2437,4117,3132,0]Ao[4725,13,4726,1903,2398,3132,0]Ao[4725,13,4726,1903,4766,3132,0]Ao[4725,13,4726,1930,4120,3132,0]Ao[4725,13,4726,1930,4125,3132,0]Al[4725,13,4726,0,4396,3132,0]Al[4725,13,4726,0,4826,3132,0]An[4725,13,4726,4726,482,3132,0]An[4725,13,4726,4726,118,3132,0]Ao[4725,13,4726,4726,2415,3132,0]Ao[4725,13,4726,4726,3119,3132,0]Ao[4725,13,1836,1836,4286,3132,0]Ao[4725,13,4968,4968,4867,3132,0]Ao[4725,13,4968,4968,1339,3132,0]Ao[4725,13,1841,1841,5073,3132,0]Al[4725,13,1920,0,1338,3132,0]Ao[4431,13,4432,4432,4126,3132,0]Ak[3938,13,3939,1045,474,0,0]Al[3938,13,3939,4074,3325,0,0]Al[3938,13,3939,4074,4868,0,0]Al[3938,13,3939,4079,3331,0,0]Ai[4725,14,3134,0,1576,0,0]Ai[4725,14,3134,0,1566,0,0]Ai[4725,14,3134,0,3099,0,0]Ai[4725,14,3134,0,4263,0,0]Ai[4725,14,3134,0,4145,0,0]Ai[4725,14,3134,0,4138,0,0]Ai[4725,14,3999,0,2408,0,0]Ai[4725,14,3999,0,2429,0,0]Ai[4725,14,3999,0,2393,0,0]Ai[4725,14,3999,0,1999,0,0]Ae[1361,7,1362,0,0,0,0]Ah[4725,14,4497,0,470,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Ag[3938,5,3697,133,0,0,0]Ag[4725,5,3698,133,0,0,0]Al[1046,15,1047,1047,4860,0,0]Ae[3958,5,3959,0,0,0,0]Ah[3938,6,3939,4726,0,0,0]Ae[4725,6,4726,0,0,0,0]Al[4725,15,1836,1836,1589,0,0]Ai[3938,19,3939,0,1599,0,0]Ai[3938,19,3939,0,1582,0,0]Al[4725,19,4726,1952,1600,0,0]Al[4725,19,4726,1522,1583,0,0]Ae[1361,5,1362,0,0,0,0]Ae[1046,5,1830,0,0,0,0]Ae[1046,5,1925,0,0,0,0]Ah[3938,15,3939,0,117,0,0]Ak[4725,15,4726,4726,118,0,0]Ak[3938,13,3939,0,1599,128,0]Ak[3938,13,3939,0,1582,128,0]Ak[3938,13,3939,0,3983,128,0]Ak[3938,13,3939,0,4119,128,0]Aj[3938,13,3939,0,481,128,0]Aj[3938,13,3939,0,117,128,0]Ak[3938,13,3939,0,2414,128,0]An[4725,13,4726,1952,1600,128,0]An[4725,13,4726,3165,4768,128,0]An[4725,13,4726,1522,1583,128,0]An[4725,13,4726,1071,3141,128,0]An[4725,13,4726,1071,4280,128,0]An[4725,13,4726,1076,3346,128,0]An[4725,13,4726,3283,3984,128,0]An[4725,13,4726,2437,4676,128,0]An[4725,13,4726,1903,4766,128,0]An[4725,13,4726,1930,4120,128,0]Am[4725,13,4726,4726,482,128,0]Am[4725,13,4726,4726,118,128,0]An[4725,13,4726,4726,2415,128,0]Ai[3938,13,3939,0,2414,0,0]Al[4725,13,4726,4726,2415,0,0]Ai[4725,14,3999,0,1577,0,0]Ai[4725,14,3999,0,3105,0,0]Ai[3938,14,3939,0,2423,0,0]Al[4725,14,4726,4726,2424,0,0]Al[4431,14,4432,4432,2412,0,0]Al[4431,14,4432,4432,2425,0,0]An[1361,13,1362,1362,125,1327,0]Ao[1361,13,1362,1362,3970,1327,0]Ao[1361,13,1536,1536,4393,1327,0]Ao[4007,13,4008,4008,5014,1327,0]Ao[3938,13,3939,3702,3298,1327,0]Ao[3938,13,3939,3702,3300,1327,0]Ao[3938,13,3939,3702,4929,1327,0]Dd[3938,13,3939,3702,4767,1971,0,\"impl-Display-for-SendDatagramError\"]Db[3938,13,3939,3702,4767,1327,0,\"impl-Debug-for-SendDatagramError\"]Ao[3938,13,3939,2436,2391,1327,0]Ao[3938,13,3939,2436,4253,1327,0]Ao[3938,13,3939,2463,2395,1327,0]Cm[3938,13,3939,2463,3328,1971,0,\"impl-Display-for-RetryError\"]Ck[3938,13,3939,2463,3328,1327,0,\"impl-Debug-for-RetryError\"]Ao[3938,13,3939,2463,4372,1327,0]An[3938,13,3939,1045,474,1327,0]Ao[3938,13,3939,4074,3325,1327,0]Ao[3938,13,3939,4074,4868,1327,0]Da[3938,13,3939,4074,4391,1971,0,\"impl-Display-for-ReadToEndError\"]Co[3938,13,3939,4074,4391,1327,0,\"impl-Debug-for-ReadToEndError\"]Cj[3938,13,3939,4074,3140,1327,0,\"impl-Debug-for-ReadError\"]Cl[3938,13,3939,4074,3140,1971,0,\"impl-Display-for-ReadError\"]Ck[3938,13,3939,4074,3327,1327,0,\"impl-Debug-for-ResetError\"]Cm[3938,13,3939,4074,3327,1971,0,\"impl-Display-for-ResetError\"]Da[3938,13,3939,4074,4390,1971,0,\"impl-Display-for-ReadExactError\"]Co[3938,13,3939,4074,4390,1327,0,\"impl-Debug-for-ReadExactError\"]Ao[3938,13,3939,1548,4159,1327,0]Ao[3938,13,3939,1088,3996,1327,0]Ao[3938,13,3939,4079,3331,1327,0]Ck[3938,13,3939,4079,3345,1327,0,\"impl-Debug-for-WriteError\"]Cm[3938,13,3939,4079,3345,1971,0,\"impl-Display-for-WriteError\"]Cm[3938,13,3939,4079,4158,1327,0,\"impl-Debug-for-StoppedError\"]Co[3938,13,3939,4079,4158,1971,0,\"impl-Display-for-StoppedError\"]Cf[3938,13,3939,0,1599,1971,0,\"impl-Display-for-VarInt\"]Cd[3938,13,3939,0,1599,1327,0,\"impl-Debug-for-VarInt\"]Dd[3938,13,3939,0,4926,1971,0,\"impl-Display-for-VarIntBoundsExceeded\"]Db[3938,13,3939,0,4926,1327,0,\"impl-Debug-for-VarIntBoundsExceeded\"]Al[3938,13,3939,0,1320,1327,0]Cd[3938,13,3939,0,1582,1327,0,\"impl-Debug-for-PathId\"]Cf[3938,13,3939,0,1582,1971,0,\"impl-Display-for-PathId\"]Al[3938,13,3939,0,2426,1327,0]Al[3938,13,3939,0,3306,1327,0]Al[3938,13,3939,0,3137,1327,0]Al[3938,13,3939,0,4489,1327,0]Al[3938,13,3939,0,2010,1327,0]Cj[3938,13,3939,0,4110,1327,0,\"impl-Debug-for-ClosedStream\"]Cl[3938,13,3939,0,4110,1971,0,\"impl-Display-for-ClosedStream\"]Cm[3938,13,3939,0,4485,1327,0,\"impl-Debug-for-ConnectionError\"]Co[3938,13,3939,0,4485,1971,0,\"impl-Display-for-ConnectionError\"]Al[3938,13,3939,0,4499,1327,0]Al[3938,13,3939,0,4506,1327,0]Al[3938,13,3939,0,4791,1327,0]Al[3938,13,3939,0,4806,1327,0]Al[3938,13,3939,0,3983,1327,0]Al[3938,13,3939,0,4367,1327,0]Al[3938,13,3939,0,4152,1327,0]Al[3938,13,3939,0,4983,1327,0]Al[3938,13,3939,0,4104,1327,0]Ci[3938,13,3939,0,3973,1327,0,\"impl-Debug-for-ConfigError\"]Ck[3938,13,3939,0,3973,1971,0,\"impl-Display-for-ConfigError\"]Ci[3938,13,3939,0,3120,1971,0,\"impl-Display-for-FrameType\"]Cg[3938,13,3939,0,3120,1327,0,\"impl-Debug-for-FrameType\"]Co[3938,13,3939,0,4482,1971,0,\"impl-Display-for-ConnectionClose\"]Cm[3938,13,3939,0,4482,1327,0,\"impl-Debug-for-ConnectionClose\"]Cn[3938,13,3939,0,4670,1327,0,\"impl-Debug-for-ApplicationClose\"]D`[3938,13,3939,0,4670,1971,0,\"impl-Display-for-ApplicationClose\"]Cj[3938,13,3939,0,4116,1327,0,\"impl-Debug-for-ConnectError\"]Cl[3938,13,3939,0,4116,1971,0,\"impl-Display-for-ConnectError\"]Cl[3938,13,3939,0,4119,1971,0,\"impl-Display-for-ConnectionId\"]Cj[3938,13,3939,0,4119,1327,0,\"impl-Debug-for-ConnectionId\"]Al[3938,13,3939,0,4124,1327,0]Db[3938,13,3939,0,4825,1971,0,\"impl-Display-for-TransportErrorCode\"]D`[3938,13,3939,0,4825,1327,0,\"impl-Debug-for-TransportErrorCode\"]Al[3938,13,3939,0,3309,1327,0]Al[3938,13,3939,0,4701,1327,0]Ak[3938,13,3939,0,481,1327,0]C`[3938,13,3939,0,117,1327,0,\"impl-Debug-for-Dir\"]Cb[3938,13,3939,0,117,1971,0,\"impl-Display-for-Dir\"]Cf[3938,13,3939,0,2414,1327,0,\"impl-Debug-for-StreamId\"]Ch[3938,13,3939,0,2414,1971,0,\"impl-Display-for-StreamId\"]Al[3938,13,3939,0,2423,1327,0]Ak[3938,13,3697,0,111,1327,0]Al[3938,13,3697,0,3108,1327,0]Al[3938,13,3697,0,1324,1327,0]Al[3938,13,3697,0,3978,1327,0]Al[3938,13,3697,0,1984,1327,0]Al[3938,13,3697,0,4272,1327,0]Al[3938,13,3697,0,4759,1327,0]Al[3938,13,1840,0,5072,1327,0]Al[3938,13,1840,0,3976,1327,0]Al[3938,13,1840,0,4829,1327,0]Dd[3938,13,1919,0,4922,1971,0,\"impl-Display-for-NoInitialCipherSuite\"]Db[3938,13,1919,0,4922,1327,0,\"impl-Debug-for-NoInitialCipherSuite\"]Cc[3938,13,1919,0,1337,1327,0,\"impl-Debug-for-Error\"]Ce[3938,13,1919,0,1337,1971,0,\"impl-Display-for-Error\"]Ao[4725,13,4726,3703,3301,1327,0]Ao[4725,13,4726,2437,2392,1327,0]Ci[4725,13,4726,1952,1600,1971,0,\"impl-Display-for-VarInt\"]Cg[4725,13,4726,1952,1600,1327,0,\"impl-Debug-for-VarInt\"]Dg[4725,13,4726,1952,4927,1971,0,\"impl-Display-for-VarIntBoundsExceeded\"]De[4725,13,4726,1952,4927,1327,0,\"impl-Debug-for-VarIntBoundsExceeded\"]Ao[4725,13,4726,3156,1321,1327,0]Db[4725,13,4726,3165,4768,1327,0,\"impl-Debug-for-SendDatagramError\"]Dd[4725,13,4726,3165,4768,1971,0,\"impl-Display-for-SendDatagramError\"]Cg[4725,13,4726,1522,1583,1327,0,\"impl-Debug-for-PathId\"]Ci[4725,13,4726,1522,1583,1971,0,\"impl-Display-for-PathId\"]Ao[4725,13,4726,1522,4148,1327,0]Ao[4725,13,4726,1522,3321,1327,0]Ao[4725,13,4726,1522,3136,1327,0]Dc[4725,13,4726,1522,4822,1327,0,\"impl-Debug-for-SetPathStatusError\"]De[4725,13,4726,1522,4822,1971,0,\"impl-Display-for-SetPathStatusError\"]Cm[4725,13,4726,1522,3296,1971,0,\"impl-Display-for-ClosedPath\"]Ck[4725,13,4726,1522,3296,1327,0,\"impl-Debug-for-ClosedPath\"]Ao[4725,13,4726,1538,2427,1327,0]Ao[4725,13,4726,1538,3307,1327,0]Ao[4725,13,4726,1538,3138,1327,0]Ao[4725,13,4726,1538,4490,1327,0]Cl[4725,13,4726,1071,3141,1971,0,\"impl-Display-for-ReadError\"]Cj[4725,13,4726,1071,3141,1327,0,\"impl-Debug-for-ReadError\"]D`[4725,13,4726,1071,4280,1971,0,\"impl-Display-for-ReadableError\"]Cn[4725,13,4726,1071,4280,1327,0,\"impl-Debug-for-ReadableError\"]Ao[4725,13,4726,1076,2011,1327,0]Cm[4725,13,4726,1076,3346,1971,0,\"impl-Display-for-WriteError\"]Ck[4725,13,4726,1076,3346,1327,0,\"impl-Debug-for-WriteError\"]Cl[4725,13,4726,1076,3982,1327,0,\"impl-Debug-for-FinishError\"]Cn[4725,13,4726,1076,3982,1971,0,\"impl-Display-for-FinishError\"]Ao[4725,13,4726,2144,4000,1327,0]Ao[4725,13,4726,2144,4392,1327,0]Co[4725,13,4726,2144,4114,1971,0,\"impl-Display-for-ClosedStream\"]Cm[4725,13,4726,2144,4114,1327,0,\"impl-Debug-for-ClosedStream\"]Db[4725,13,4726,3703,4486,1971,0,\"impl-Display-for-ConnectionError\"]D`[4725,13,4726,3703,4486,1327,0,\"impl-Debug-for-ConnectionError\"]Cl[4725,13,4726,3703,3133,1971,0,\"impl-Display-for-PathError\"]Cj[4725,13,4726,3703,3133,1327,0,\"impl-Debug-for-PathError\"]Co[4725,13,4726,3703,4358,1327,0,\"impl-Debug-for-ClosePathError\"]Da[4725,13,4726,3703,4358,1971,0,\"impl-Display-for-ClosePathError\"]Dg[4725,13,4726,3703,5010,1327,0,\"impl-Debug-for-MultipathNotNegotiated\"]Di[4725,13,4726,3703,5010,1971,0,\"impl-Display-for-MultipathNotNegotiated\"]Ao[4725,13,4726,3703,1342,1327,0]Ao[4725,13,4726,1067,4500,1327,0]Ao[4725,13,4726,3283,4507,1327,0]Ao[4725,13,4726,3283,4792,1327,0]Ao[4725,13,4726,3283,4807,1327,0]Ao[4725,13,4726,3283,3984,1327,0]Ao[4725,13,4726,1838,4368,1327,0]Ao[4725,13,4726,1838,4154,1327,0]Ao[4725,13,4726,1838,4984,1327,0]Ao[4725,13,4726,1838,4106,1327,0]Cn[4725,13,4726,1838,3974,1971,0,\"impl-Display-for-ConfigError\"]Cl[4725,13,4726,1838,3974,1327,0,\"impl-Debug-for-ConfigError\"]Cl[4725,13,4726,1512,3121,1971,0,\"impl-Display-for-FrameType\"]Cj[4725,13,4726,1512,3121,1327,0,\"impl-Debug-for-FrameType\"]Ao[4725,13,4726,1512,4373,1327,0]Cm[4725,13,4726,1512,3313,1971,0,\"impl-Display-for-MaybeFrame\"]Ck[4725,13,4726,1512,3313,1327,0,\"impl-Debug-for-MaybeFrame\"]Ck[4725,13,4726,1512,3335,1327,0,\"impl-Debug-for-StreamInfo\"]Cm[4725,13,4726,1512,3335,1971,0,\"impl-Display-for-StreamInfo\"]Co[4725,13,4726,1512,4121,1971,0,\"impl-Display-for-DatagramInfo\"]Cm[4725,13,4726,1512,4121,1327,0,\"impl-Debug-for-DatagramInfo\"]D`[4725,13,4726,1512,4484,1327,0,\"impl-Debug-for-ConnectionClose\"]Db[4725,13,4726,1512,4484,1971,0,\"impl-Display-for-ConnectionClose\"]Dc[4725,13,4726,1512,4672,1971,0,\"impl-Display-for-ApplicationClose\"]Da[4725,13,4726,1512,4672,1327,0,\"impl-Debug-for-ApplicationClose\"]Ao[4725,13,4726,1512,2385,1327,0]Ao[4725,13,4726,2437,4676,1327,0]Ao[4725,13,4726,2437,2396,1327,0]Co[4725,13,4726,2437,4117,1971,0,\"impl-Display-for-ConnectError\"]Cm[4725,13,4726,2437,4117,1327,0,\"impl-Debug-for-ConnectError\"]Ao[4725,13,4726,2437,3968,1327,0]Cm[4725,13,4726,2437,3329,1971,0,\"impl-Display-for-RetryError\"]Ck[4725,13,4726,2437,3329,1327,0,\"impl-Debug-for-RetryError\"]Ao[4725,13,4726,1903,4275,1327,0]Ao[4725,13,4726,1903,4498,1327,0]Ao[4725,13,4726,1903,5013,1327,0]Ao[4725,13,4726,1903,2398,1327,0]Dd[4725,13,4726,1903,4766,1971,0,\"impl-Display-for-PacketDecodeError\"]Db[4725,13,4726,1903,4766,1327,0,\"impl-Debug-for-PacketDecodeError\"]Ao[4725,13,4726,1930,4488,1327,0]Ao[4725,13,4726,1930,4252,1327,0]Cm[4725,13,4726,1930,4120,1327,0,\"impl-Debug-for-ConnectionId\"]Co[4725,13,4726,1930,4120,1971,0,\"impl-Display-for-ConnectionId\"]Ao[4725,13,4726,1930,4125,1327,0]Ce[4725,13,4726,0,4396,1971,0,\"impl-Display-for-Error\"]Cc[4725,13,4726,0,4396,1327,0,\"impl-Debug-for-Error\"]Cd[4725,13,4726,0,4826,1971,0,\"impl-Display-for-Code\"]Cb[4725,13,4726,0,4826,1327,0,\"impl-Debug-for-Code\"]Ao[4725,13,4726,4293,3310,1327,0]Ao[4725,13,4726,4293,5106,1327,0]Ao[4725,13,4726,4856,4702,1327,0]An[4725,13,4726,4726,482,1327,0]Cc[4725,13,4726,4726,118,1327,0,\"impl-Debug-for-Dir\"]Ce[4725,13,4726,4726,118,1971,0,\"impl-Display-for-Dir\"]Ck[4725,13,4726,4726,2415,1971,0,\"impl-Display-for-StreamId\"]Ci[4725,13,4726,4726,2415,1327,0,\"impl-Debug-for-StreamId\"]Ao[4725,13,4726,4726,2424,1327,0]Cj[4725,13,4726,4726,3119,1327,0,\"impl-Debug-for-FourTuple\"]Cl[4725,13,4726,4726,3119,1971,0,\"impl-Display-for-FourTuple\"]Cn[4725,13,1836,1836,4286,1327,0,\"impl-Debug-for-UnexpectedEnd\"]D`[4725,13,1836,1836,4286,1971,0,\"impl-Display-for-UnexpectedEnd\"]Ao[4725,13,4968,4968,4867,1327,0]Ch[4725,13,4968,4968,1339,1971,0,\"impl-Display-for-Error\"]Cf[4725,13,4968,4968,1339,1327,0,\"impl-Debug-for-Error\"]Ao[4725,13,1841,1841,5073,1327,0]Ao[4725,13,1841,1841,3977,1327,0]Ao[4725,13,1841,1841,4832,1327,0]Dg[4725,13,1920,1920,4923,1971,0,\"impl-Display-for-NoInitialCipherSuite\"]De[4725,13,1920,1920,4923,1327,0,\"impl-Debug-for-NoInitialCipherSuite\"]Cc[4725,13,1920,0,1338,1327,0,\"impl-Debug-for-Error\"]Ce[4725,13,1920,0,1338,1971,0,\"impl-Display-for-Error\"]Am[4725,13,3698,133,112,1327,0]An[4725,13,3698,133,3109,1327,0]Ao[4725,13,3698,1507,1325,1327,0]Ao[4725,13,3698,1507,3979,1327,0]Ao[4725,13,3698,2485,1985,1327,0]Ao[4725,13,3698,2485,4273,1327,0]Ao[4725,13,3698,3698,4760,1327,0]Cf[4725,13,2115,2115,1340,1327,0,\"impl-Debug-for-Error\"]Ch[4725,13,2115,2115,1340,1971,0,\"impl-Display-for-Error\"]Ao[4725,13,2115,2115,1343,1327,0]An[4431,13,4432,389,4397,1327,0]Ao[4431,13,4432,4432,2412,1327,0]Ao[4431,13,4432,4432,2425,1327,0]Ao[4431,13,4432,4432,4126,1327,0]Al[4725,13,4726,1522,4148,0,0]Ai[3938,14,3939,0,2426,0,0]Al[4725,14,4726,1538,2427,0,0]Al[4725,13,4726,1903,4275,0,0]Al[4725,14,4726,1903,5013,0,0]Ah[4725,14,4497,0,470,0,0]Al[4431,14,4432,4432,2412,0,0]Ai[3938,13,3939,0,4983,0,0]Al[4725,13,4726,1838,4984,0,0]8Al[1361,13,1536,1536,4393,0,0]Al[4007,13,4008,4008,5014,0,0]Ai[3938,13,3939,0,4244,0,0]Al[3938,13,3939,2436,2391,0,0]Ai[3938,13,3939,0,3322,0,0]Ai[3938,13,3939,0,4499,0,0]Ai[3938,13,3939,0,4367,0,0]Ai[3938,13,3939,0,4152,0,0]Ai[3938,13,3939,0,4104,0,0]Ai[3938,13,3939,0,4119,0,0]Ai[3938,13,3939,0,4701,0,0]Ai[3938,13,3939,0,2414,0,0]Ah[3938,13,3697,0,111,0,0]Ai[3938,13,3697,0,1324,0,0]Ai[3938,13,3697,0,1984,0,0]Al[4725,13,4726,4516,4245,0,0]Al[4725,13,4726,1067,3323,0,0]Al[4725,13,4726,2437,2392,0,0]Al[4725,13,4726,1903,5131,0,0]Al[4725,13,4726,4293,5101,0,0]Al[4725,13,4726,1067,4500,0,0]Al[4725,13,4726,1838,4368,0,0]Al[4725,13,4726,1838,4154,0,0]Al[4725,13,4726,1838,4106,0,0]Al[4725,13,4726,1903,4275,0,0]Al[4725,13,4726,1930,4120,0,0]Ai[4725,13,4726,0,4396,0,0]Al[4725,13,4726,4293,5106,0,0]Al[4725,13,4726,4856,4702,0,0]Al[4725,13,4726,4726,2415,0,0]Aj[4725,13,3698,133,112,0,0]Al[4725,13,3698,1507,1325,0,0]Al[4725,13,3698,2485,1985,0,0]Ak[4431,13,4432,389,4397,0,0]Al[1046,13,4211,4211,5058,0,0]Al[1046,13,4211,4211,5059,0,0]Aj[3938,13,3939,0,481,124,0]Am[4725,13,4726,4726,482,124,0]Ai[3938,12,3939,0,3338,0,0]Al[3938,13,3939,2136,1996,0,0]0Ao[3938,13,3939,1548,4159,1996,0]Al[3938,13,3939,0,4284,3338,0]Al[4725,12,4726,1838,3339,0,0]Ao[4725,13,4726,1838,4285,3339,0]Al[3938,13,3939,3702,3300,0,0]Ai[3938,14,3939,0,3137,0,0]Al[4725,13,4726,3703,3301,0,0]Al[4725,14,4726,1538,3138,0,0]Ae[1046,7,1830,0,0,0,0]Ae[1046,7,1925,0,0,0,0]Ae[3938,4,3939,0,0,0,0]Ai[3938,15,3939,0,4124,0,0]Al[4725,15,4726,1930,4125,0,0]Al[4431,15,4432,4432,4126,0,0]210Ah[3938,5,1840,1841,0,0,0]Ae[4725,5,1841,0,0,0,0]Al[4725,15,4726,1903,4498,0,0]Al[4725,15,4726,1512,3313,0,0]Ah[3938,5,3939,1045,0,0,0]Al[4725,15,4726,3703,1342,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Al[3938,15,3939,4074,4391,0,0]Ah[3938,6,3939,4726,0,0,0]Ae[4725,6,4726,0,0,0,0]Ai[3938,19,3939,0,1582,0,0]Al[4725,19,4726,1522,1583,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]Ai[4725,14,3134,0,4138,0,0]Al[4431,14,4432,4432,2412,0,0]Aa[491,3,0,0,0,0,0]Ai[4725,14,4726,0,4396,0,0]Ai[3938,14,3939,0,3137,0,0]Al[4725,14,4726,1538,3138,0,0]Al[4725,14,4726,1512,2385,0,0]An[3938,13,3939,3702,2405,458,0]An[3938,13,3939,2463,2395,458,0]An[3938,13,3939,4074,3325,458,0]An[3938,13,3939,4079,3331,458,0]An[4725,13,4726,1071,1562,458,0]Am[1361,13,1362,1362,125,465,0]An[1361,13,1362,1362,3970,465,0]An[1361,13,1536,1536,4001,465,0]An[1361,13,1536,1536,1357,465,0]An[1361,13,1536,1536,4393,465,0]Ak[491,13,492,492,3971,465,0]An[4007,13,4008,4008,5014,465,0]An[3938,13,3939,3702,4511,465,0]An[3938,13,3939,3702,2405,465,0]Ak[3938,13,3939,0,4244,465,0]An[3938,13,3939,1045,2406,465,0]An[3938,13,3939,1045,3111,465,0]An[3938,13,3939,1045,4668,465,0]An[3938,13,3939,3702,3298,465,0]An[3938,13,3939,3702,3300,465,0]An[3938,13,3939,3702,1987,465,0]An[3938,13,3939,3702,1575,465,0]An[3938,13,3939,3702,3101,465,0]An[3938,13,3939,3702,2379,465,0]An[3938,13,3939,3702,4144,465,0]An[3938,13,3939,3702,4149,465,0]An[3938,13,3939,3702,4929,465,0]An[3938,13,3939,3702,4767,465,0]0An[3938,13,3939,2436,2391,465,0]An[3938,13,3939,2436,4253,465,0]An[3938,13,3939,2436,1554,465,0]An[3938,13,3939,2463,2395,465,0]An[3938,13,3939,2463,3328,465,0]An[3938,13,3939,2463,4372,465,0]Am[3938,13,3939,1045,474,465,0]An[3938,13,3939,4074,3325,465,0]An[3938,13,3939,4074,4868,465,0]An[3938,13,3939,4074,4391,465,0]0Dm[3938,13,3939,4074,3140,465,0,\"impl-From%3CConnectionError%3E-for-ReadError\"]Dh[3938,13,3939,4074,3140,465,0,\"impl-From%3CResetError%3E-for-ReadError\"]An[3938,13,3939,4074,3140,465,0]An[3938,13,3939,4074,3327,465,0]0An[3938,13,3939,4074,4390,465,0]0An[3938,13,3939,1548,4159,465,0]An[3938,13,3939,1088,3996,465,0]An[3938,13,3939,4079,3331,465,0]An[3938,13,3939,4079,3345,465,0]Dn[3938,13,3939,4079,3345,465,0,\"impl-From%3CConnectionError%3E-for-WriteError\"]Dk[3938,13,3939,4079,3345,465,0,\"impl-From%3CStoppedError%3E-for-WriteError\"]Dk[3938,13,3939,4079,3345,465,0,\"impl-From%3CClosedStream%3E-for-WriteError\"]An[3938,13,3939,4079,4158,465,0]0Ak[3938,13,3939,0,3322,465,0]Ak[3938,13,3939,0,4284,465,0]Ak[3938,13,3939,0,4503,465,0]Ak[3938,13,3939,0,4136,465,0]Ak[3938,13,3939,0,4381,465,0]Dj[3938,13,3939,0,1599,465,0,\"impl-From%3CTransportErrorCode%3E-for-VarInt\"]Ak[3938,13,3939,0,1599,465,0]Ck[3938,13,3939,0,1599,465,0,\"impl-From%3Cu32%3E-for-VarInt\"]D`[3938,13,3939,0,1599,465,0,\"impl-From%3CStreamId%3E-for-VarInt\"]Cj[3938,13,3939,0,1599,465,0,\"impl-From%3Cu8%3E-for-VarInt\"]Ck[3938,13,3939,0,1599,465,0,\"impl-From%3Cu16%3E-for-VarInt\"]Ak[3938,13,3939,0,4926,465,0]Ak[3938,13,3939,0,1320,465,0]Ak[3938,13,3939,0,1582,465,0]0Ak[3938,13,3939,0,2426,465,0]Ak[3938,13,3939,0,3306,465,0]Ak[3938,13,3939,0,3137,465,0]Ak[3938,13,3939,0,4489,465,0]Ak[3938,13,3939,0,2010,465,0]Ak[3938,13,3939,0,4110,465,0]Dl[3938,13,3939,0,4485,465,0,\"impl-From%3CCloseReason%3E-for-ConnectionError\"]Do[3938,13,3939,0,4485,465,0,\"impl-From%3CTransportError%3E-for-ConnectionError\"]Df[3938,13,3939,0,4485,465,0,\"impl-From%3CClose%3E-for-ConnectionError\"]Ak[3938,13,3939,0,4485,465,0]Ak[3938,13,3939,0,4499,465,0]Ak[3938,13,3939,0,4506,465,0]Ak[3938,13,3939,0,4791,465,0]Ak[3938,13,3939,0,4806,465,0]Ak[3938,13,3939,0,3983,465,0]0Ak[3938,13,3939,0,4367,465,0]Ak[3938,13,3939,0,4152,465,0]Ak[3938,13,3939,0,4983,465,0]Ak[3938,13,3939,0,4104,465,0]Ea[3938,13,3939,0,3973,465,0,\"impl-From%3CVarIntBoundsExceeded%3E-for-ConfigError\"]Ak[3938,13,3939,0,3973,465,0]Dl[3938,13,3939,0,3973,465,0,\"impl-From%3CTryFromIntError%3E-for-ConfigError\"]Ak[3938,13,3939,0,3120,465,0]Ak[3938,13,3939,0,4482,465,0]0Ak[3938,13,3939,0,4670,465,0]Ak[3938,13,3939,0,4116,465,0]0Ak[3938,13,3939,0,4119,465,0]Ak[3938,13,3939,0,4124,465,0]Ak[3938,13,3939,0,4825,465,0]0Ak[3938,13,3939,0,3309,465,0]Ak[3938,13,3939,0,4701,465,0]Aj[3938,13,3939,0,481,465,0]Aj[3938,13,3939,0,117,465,0]Ak[3938,13,3939,0,2414,465,0]0Ak[3938,13,3939,0,2423,465,0]Aj[3938,13,3697,0,111,465,0]Ak[3938,13,3697,0,3108,465,0]Ak[3938,13,3697,0,1324,465,0]Ak[3938,13,3697,0,3978,465,0]Ak[3938,13,3697,0,1984,465,0]Ak[3938,13,3697,0,4272,465,0]Ak[3938,13,3697,0,4759,465,0]Ak[3938,13,1840,0,1979,465,0]Aj[3938,13,1840,0,468,465,0]Ak[3938,13,1840,0,5072,465,0]Ak[3938,13,1840,0,3976,465,0]0Ak[3938,13,1840,0,4829,465,0]Ak[3938,13,1919,0,3340,465,0]Ak[3938,13,1919,0,4255,465,0]Ak[3938,13,1919,0,4697,465,0]Ak[3938,13,1919,0,4699,465,0]Ak[3938,13,1919,0,4922,465,0]Ak[3938,13,1919,0,1337,465,0]E`[3938,13,1919,0,1337,465,0,\"impl-From%3CUnsupportedOperationError%3E-for-Error\"]Dg[3938,13,1919,0,1337,465,0,\"impl-From%3CInconsistentKeys%3E-for-Error\"]De[3938,13,1919,0,1337,465,0,\"impl-From%3CInvalidMessage%3E-for-Error\"]De[3938,13,1919,0,1337,465,0,\"impl-From%3CPeerMisbehaved%3E-for-Error\"]Dg[3938,13,1919,0,1337,465,0,\"impl-From%3CPeerIncompatible%3E-for-Error\"]Dg[3938,13,1919,0,1337,465,0,\"impl-From%3CCertificateError%3E-for-Error\"]Dn[3938,13,1919,0,1337,465,0,\"impl-From%3CCertRevocationListError%3E-for-Error\"]E`[3938,13,1919,0,1337,465,0,\"impl-From%3CEncryptedClientHelloError%3E-for-Error\"]Df[3938,13,1919,0,1337,465,0,\"impl-From%3CSystemTimeError%3E-for-Error\"]Df[3938,13,1919,0,1337,465,0,\"impl-From%3CGetRandomFailed%3E-for-Error\"]Da[3938,13,1919,0,1337,465,0,\"impl-From%3COtherError%3E-for-Error\"]An[4725,13,4726,4516,4245,465,0]An[4725,13,4726,3165,3115,465,0]An[4725,13,4726,1071,1562,465,0]An[4725,13,4726,2144,2004,465,0]An[4725,13,4726,2144,3326,465,0]An[4725,13,4726,2144,3332,465,0]An[4725,13,4726,3703,3301,465,0]An[4725,13,4726,1067,3323,465,0]An[4725,13,4726,1838,4285,465,0]An[4725,13,4726,2437,2392,465,0]An[4725,13,4726,2437,4251,465,0]An[4725,13,4726,1903,5131,465,0]An[4725,13,4726,4293,5101,465,0]An[4725,13,4726,1547,4504,465,0]An[4725,13,4726,1547,4137,465,0]An[4725,13,4726,1547,4382,465,0]Cn[4725,13,4726,1952,1600,465,0,\"impl-From%3Cu32%3E-for-VarInt\"]Dc[4725,13,4726,1952,1600,465,0,\"impl-From%3CStreamId%3E-for-VarInt\"]Co[4725,13,4726,1952,1600,465,0,\"impl-From%3CCode%3E-for-VarInt\"]Cm[4725,13,4726,1952,1600,465,0,\"impl-From%3Cu8%3E-for-VarInt\"]Cn[4725,13,4726,1952,1600,465,0,\"impl-From%3Cu16%3E-for-VarInt\"]An[4725,13,4726,1952,1600,465,0]An[4725,13,4726,1952,4927,465,0]An[4725,13,4726,3156,1321,465,0]An[4725,13,4726,3165,4768,465,0]An[4725,13,4726,1522,1583,465,0]0An[4725,13,4726,1522,4148,465,0]An[4725,13,4726,1522,3321,465,0]An[4725,13,4726,1522,3136,465,0]An[4725,13,4726,1522,4822,465,0]An[4725,13,4726,1522,3296,465,0]An[4725,13,4726,1538,2427,465,0]An[4725,13,4726,1538,3307,465,0]An[4725,13,4726,1538,3138,465,0]An[4725,13,4726,1538,4490,465,0]An[4725,13,4726,1071,3141,465,0]An[4725,13,4726,1071,4280,465,0]An[4725,13,4726,1076,2011,465,0]An[4725,13,4726,1076,3346,465,0]An[4725,13,4726,1076,3982,465,0]An[4725,13,4726,2144,4000,465,0]An[4725,13,4726,2144,4392,465,0]An[4725,13,4726,2144,4114,465,0]An[4725,13,4726,3703,4486,465,0]0An[4725,13,4726,3703,3133,465,0]An[4725,13,4726,3703,4358,465,0]An[4725,13,4726,3703,5010,465,0]An[4725,13,4726,3703,1342,465,0]0An[4725,13,4726,1067,4500,465,0]An[4725,13,4726,3283,4507,465,0]An[4725,13,4726,3283,4792,465,0]An[4725,13,4726,3283,4807,465,0]An[4725,13,4726,3283,3984,465,0]0An[4725,13,4726,1838,4368,465,0]An[4725,13,4726,1838,4154,465,0]An[4725,13,4726,1838,4984,465,0]An[4725,13,4726,1838,4106,465,0]Do[4725,13,4726,1838,3974,465,0,\"impl-From%3CTryFromIntError%3E-for-ConfigError\"]Ed[4725,13,4726,1838,3974,465,0,\"impl-From%3CVarIntBoundsExceeded%3E-for-ConfigError\"]An[4725,13,4726,1838,3974,465,0]An[4725,13,4726,1512,3121,465,0]An[4725,13,4726,1512,4373,465,0]An[4725,13,4726,1512,3313,465,0]An[4725,13,4726,1512,3335,465,0]An[4725,13,4726,1512,4121,465,0]An[4725,13,4726,1512,4484,465,0]0An[4725,13,4726,1512,4672,465,0]An[4725,13,4726,1512,2385,465,0]An[4725,13,4726,2437,4676,465,0]An[4725,13,4726,2437,2396,465,0]An[4725,13,4726,2437,4117,465,0]0An[4725,13,4726,2437,3968,465,0]An[4725,13,4726,2437,3329,465,0]An[4725,13,4726,1903,4275,465,0]An[4725,13,4726,1903,4498,465,0]An[4725,13,4726,1903,5013,465,0]An[4725,13,4726,1903,2398,465,0]An[4725,13,4726,1903,4766,465,0]0An[4725,13,4726,1930,4488,465,0]An[4725,13,4726,1930,4252,465,0]An[4725,13,4726,1930,4120,465,0]An[4725,13,4726,1930,4125,465,0]Ak[4725,13,4726,0,4396,465,0]0Ak[4725,13,4726,0,4826,465,0]0An[4725,13,4726,4293,3310,465,0]An[4725,13,4726,4293,5106,465,0]An[4725,13,4726,4856,4702,465,0]Am[4725,13,4726,4726,482,465,0]Am[4725,13,4726,4726,118,465,0]An[4725,13,4726,4726,2415,465,0]0An[4725,13,4726,4726,2424,465,0]An[4725,13,4726,4726,3119,465,0]An[4725,13,1836,1836,4286,465,0]An[4725,13,4968,4968,4867,465,0]An[4725,13,4968,4968,1339,465,0]0An[4725,13,1841,1841,1980,465,0]Am[4725,13,1841,1841,469,465,0]An[4725,13,1841,1841,5073,465,0]An[4725,13,1841,1841,3977,465,0]0An[4725,13,1841,1841,4832,465,0]An[4725,13,1920,1920,3341,465,0]An[4725,13,1920,1920,4256,465,0]An[4725,13,1920,1920,4698,465,0]An[4725,13,1920,1920,4700,465,0]An[4725,13,1920,1920,4923,465,0]Dg[4725,13,1920,0,1338,465,0,\"impl-From%3CCertificateError%3E-for-Error\"]Df[4725,13,1920,0,1338,465,0,\"impl-From%3CGetRandomFailed%3E-for-Error\"]Df[4725,13,1920,0,1338,465,0,\"impl-From%3CSystemTimeError%3E-for-Error\"]Ak[4725,13,1920,0,1338,465,0]E`[4725,13,1920,0,1338,465,0,\"impl-From%3CUnsupportedOperationError%3E-for-Error\"]E`[4725,13,1920,0,1338,465,0,\"impl-From%3CEncryptedClientHelloError%3E-for-Error\"]Da[4725,13,1920,0,1338,465,0,\"impl-From%3COtherError%3E-for-Error\"]Dn[4725,13,1920,0,1338,465,0,\"impl-From%3CCertRevocationListError%3E-for-Error\"]Dg[4725,13,1920,0,1338,465,0,\"impl-From%3CInconsistentKeys%3E-for-Error\"]De[4725,13,1920,0,1338,465,0,\"impl-From%3CInvalidMessage%3E-for-Error\"]De[4725,13,1920,0,1338,465,0,\"impl-From%3CPeerMisbehaved%3E-for-Error\"]Dg[4725,13,1920,0,1338,465,0,\"impl-From%3CPeerIncompatible%3E-for-Error\"]Al[4725,13,3698,133,112,465,0]Am[4725,13,3698,133,3109,465,0]An[4725,13,3698,1507,1325,465,0]An[4725,13,3698,1507,3979,465,0]An[4725,13,3698,2485,1985,465,0]An[4725,13,3698,2485,4273,465,0]An[4725,13,3698,3698,4760,465,0]An[4725,13,2115,2115,1340,465,0]An[4725,13,2115,2115,1343,465,0]An[4431,13,4432,4432,3344,465,0]0Am[4431,13,4432,389,4397,465,0]An[4431,13,4432,4432,2412,465,0]An[4431,13,4432,4432,2425,465,0]An[4431,13,4432,4432,4126,465,0]An[1046,13,1047,1047,3112,465,0]An[1046,13,1047,1047,4860,465,0]Am[1046,13,1830,1830,126,465,0]An[1046,13,1537,1537,1358,465,0]An[1046,13,1537,1537,4002,465,0]An[1046,13,1537,1537,4494,465,0]An[1046,13,4211,4211,5058,465,0]An[1046,13,4211,4211,5059,465,0]Am[1046,13,1925,1925,127,465,0]Am[3958,13,3959,3959,116,465,0]An[3958,13,3959,3959,2382,465,0]Ak[3938,13,3939,0,1599,466,0]Ak[3938,13,3939,0,1582,466,0]Ak[3938,13,3939,0,3983,466,0]Ak[3938,13,3939,0,4119,466,0]Aj[3938,13,3939,0,481,466,0]Aj[3938,13,3939,0,117,466,0]Ak[3938,13,3939,0,2414,466,0]An[4725,13,4726,1952,1600,466,0]An[4725,13,4726,3165,4768,466,0]An[4725,13,4726,1522,1583,466,0]An[4725,13,4726,1071,3141,466,0]An[4725,13,4726,1071,4280,466,0]An[4725,13,4726,1076,3346,466,0]An[4725,13,4726,3283,3984,466,0]An[4725,13,4726,2437,4676,466,0]An[4725,13,4726,1903,4766,466,0]An[4725,13,4726,1930,4120,466,0]Am[4725,13,4726,4726,482,466,0]Am[4725,13,4726,4726,118,466,0]An[4725,13,4726,4726,2415,466,0]An[4725,13,4726,4726,3119,466,0]Am[1361,13,1362,1362,125,467,0]An[1361,13,1362,1362,3970,467,0]An[1361,13,1536,1536,4001,467,0]An[1361,13,1536,1536,1357,467,0]An[1361,13,1536,1536,4393,467,0]Ak[491,13,492,492,3971,467,0]An[4007,13,4008,4008,5014,467,0]An[3938,13,3939,3702,4511,467,0]An[3938,13,3939,3702,2405,467,0]Ak[3938,13,3939,0,4244,467,0]An[3938,13,3939,1045,2406,467,0]An[3938,13,3939,1045,3111,467,0]An[3938,13,3939,1045,4668,467,0]An[3938,13,3939,3702,3298,467,0]An[3938,13,3939,3702,3300,467,0]An[3938,13,3939,3702,1987,467,0]An[3938,13,3939,3702,1575,467,0]An[3938,13,3939,3702,3101,467,0]An[3938,13,3939,3702,2379,467,0]An[3938,13,3939,3702,4144,467,0]An[3938,13,3939,3702,4149,467,0]An[3938,13,3939,3702,4929,467,0]An[3938,13,3939,3702,4767,467,0]An[3938,13,3939,2436,2391,467,0]An[3938,13,3939,2436,4253,467,0]An[3938,13,3939,2436,1554,467,0]An[3938,13,3939,2463,2395,467,0]An[3938,13,3939,2463,3328,467,0]An[3938,13,3939,2463,4372,467,0]Am[3938,13,3939,1045,474,467,0]An[3938,13,3939,4074,3325,467,0]An[3938,13,3939,4074,4868,467,0]An[3938,13,3939,4074,4391,467,0]An[3938,13,3939,4074,3140,467,0]An[3938,13,3939,4074,3327,467,0]An[3938,13,3939,4074,4390,467,0]An[3938,13,3939,1548,4159,467,0]An[3938,13,3939,1088,3996,467,0]An[3938,13,3939,4079,3331,467,0]An[3938,13,3939,4079,3345,467,0]An[3938,13,3939,4079,4158,467,0]Ak[3938,13,3939,0,3322,467,0]Ak[3938,13,3939,0,4284,467,0]Ak[3938,13,3939,0,4503,467,0]Ak[3938,13,3939,0,4136,467,0]Ak[3938,13,3939,0,4381,467,0]Ak[3938,13,3939,0,1599,467,0]Ak[3938,13,3939,0,4926,467,0]Ak[3938,13,3939,0,1320,467,0]Ak[3938,13,3939,0,1582,467,0]Ak[3938,13,3939,0,2426,467,0]Ak[3938,13,3939,0,3306,467,0]Ak[3938,13,3939,0,3137,467,0]Ak[3938,13,3939,0,4489,467,0]Ak[3938,13,3939,0,2010,467,0]Ak[3938,13,3939,0,4110,467,0]Ak[3938,13,3939,0,4485,467,0]Ak[3938,13,3939,0,4499,467,0]Ak[3938,13,3939,0,4506,467,0]Ak[3938,13,3939,0,4791,467,0]Ak[3938,13,3939,0,4806,467,0]Ak[3938,13,3939,0,3983,467,0]Ak[3938,13,3939,0,4367,467,0]Ak[3938,13,3939,0,4152,467,0]Ak[3938,13,3939,0,4983,467,0]Ak[3938,13,3939,0,4104,467,0]Ak[3938,13,3939,0,3973,467,0]Ak[3938,13,3939,0,3120,467,0]Ak[3938,13,3939,0,4482,467,0]Ak[3938,13,3939,0,4670,467,0]Ak[3938,13,3939,0,4116,467,0]Ak[3938,13,3939,0,4119,467,0]Ak[3938,13,3939,0,4124,467,0]Ak[3938,13,3939,0,4825,467,0]Ak[3938,13,3939,0,3309,467,0]Ak[3938,13,3939,0,4701,467,0]Aj[3938,13,3939,0,481,467,0]Aj[3938,13,3939,0,117,467,0]Ak[3938,13,3939,0,2414,467,0]Ak[3938,13,3939,0,2423,467,0]Aj[3938,13,3697,0,111,467,0]Ak[3938,13,3697,0,3108,467,0]Ak[3938,13,3697,0,1324,467,0]Ak[3938,13,3697,0,3978,467,0]Ak[3938,13,3697,0,1984,467,0]Ak[3938,13,3697,0,4272,467,0]Ak[3938,13,3697,0,4759,467,0]Ak[3938,13,1840,0,1979,467,0]Aj[3938,13,1840,0,468,467,0]Ak[3938,13,1840,0,5072,467,0]Ak[3938,13,1840,0,3976,467,0]Ak[3938,13,1840,0,4829,467,0]Ak[3938,13,1919,0,3340,467,0]Ak[3938,13,1919,0,4255,467,0]Ak[3938,13,1919,0,4697,467,0]Ak[3938,13,1919,0,4699,467,0]Ak[3938,13,1919,0,4922,467,0]Ak[3938,13,1919,0,1337,467,0]An[4725,13,4726,4516,4245,467,0]An[4725,13,4726,3165,3115,467,0]An[4725,13,4726,1071,1562,467,0]An[4725,13,4726,2144,2004,467,0]An[4725,13,4726,2144,3326,467,0]An[4725,13,4726,2144,3332,467,0]An[4725,13,4726,3703,3301,467,0]An[4725,13,4726,1067,3323,467,0]An[4725,13,4726,1838,4285,467,0]An[4725,13,4726,2437,2392,467,0]An[4725,13,4726,2437,4251,467,0]An[4725,13,4726,1903,5131,467,0]An[4725,13,4726,4293,5101,467,0]An[4725,13,4726,1547,4504,467,0]An[4725,13,4726,1547,4137,467,0]An[4725,13,4726,1547,4382,467,0]An[4725,13,4726,1952,1600,467,0]An[4725,13,4726,1952,4927,467,0]An[4725,13,4726,3156,1321,467,0]An[4725,13,4726,3165,4768,467,0]An[4725,13,4726,1522,1583,467,0]An[4725,13,4726,1522,4148,467,0]An[4725,13,4726,1522,3321,467,0]An[4725,13,4726,1522,3136,467,0]An[4725,13,4726,1522,4822,467,0]An[4725,13,4726,1522,3296,467,0]An[4725,13,4726,1538,2427,467,0]An[4725,13,4726,1538,3307,467,0]An[4725,13,4726,1538,3138,467,0]An[4725,13,4726,1538,4490,467,0]An[4725,13,4726,1071,3141,467,0]An[4725,13,4726,1071,4280,467,0]An[4725,13,4726,1076,2011,467,0]An[4725,13,4726,1076,3346,467,0]An[4725,13,4726,1076,3982,467,0]An[4725,13,4726,2144,4000,467,0]An[4725,13,4726,2144,4392,467,0]An[4725,13,4726,2144,4114,467,0]An[4725,13,4726,3703,4486,467,0]An[4725,13,4726,3703,3133,467,0]An[4725,13,4726,3703,4358,467,0]An[4725,13,4726,3703,5010,467,0]An[4725,13,4726,3703,1342,467,0]An[4725,13,4726,1067,4500,467,0]An[4725,13,4726,3283,4507,467,0]An[4725,13,4726,3283,4792,467,0]An[4725,13,4726,3283,4807,467,0]An[4725,13,4726,3283,3984,467,0]An[4725,13,4726,1838,4368,467,0]An[4725,13,4726,1838,4154,467,0]An[4725,13,4726,1838,4984,467,0]An[4725,13,4726,1838,4106,467,0]An[4725,13,4726,1838,3974,467,0]An[4725,13,4726,1512,3121,467,0]An[4725,13,4726,1512,4373,467,0]An[4725,13,4726,1512,3313,467,0]An[4725,13,4726,1512,3335,467,0]An[4725,13,4726,1512,4121,467,0]An[4725,13,4726,1512,4484,467,0]An[4725,13,4726,1512,4672,467,0]An[4725,13,4726,1512,2385,467,0]An[4725,13,4726,2437,4676,467,0]An[4725,13,4726,2437,2396,467,0]An[4725,13,4726,2437,4117,467,0]An[4725,13,4726,2437,3968,467,0]An[4725,13,4726,2437,3329,467,0]An[4725,13,4726,1903,4275,467,0]An[4725,13,4726,1903,4498,467,0]An[4725,13,4726,1903,5013,467,0]An[4725,13,4726,1903,2398,467,0]An[4725,13,4726,1903,4766,467,0]An[4725,13,4726,1930,4488,467,0]An[4725,13,4726,1930,4252,467,0]An[4725,13,4726,1930,4120,467,0]An[4725,13,4726,1930,4125,467,0]Ak[4725,13,4726,0,4396,467,0]Ak[4725,13,4726,0,4826,467,0]An[4725,13,4726,4293,3310,467,0]An[4725,13,4726,4293,5106,467,0]An[4725,13,4726,4856,4702,467,0]Am[4725,13,4726,4726,482,467,0]Am[4725,13,4726,4726,118,467,0]An[4725,13,4726,4726,2415,467,0]An[4725,13,4726,4726,2424,467,0]An[4725,13,4726,4726,3119,467,0]An[4725,13,1836,1836,4286,467,0]An[4725,13,4968,4968,4867,467,0]An[4725,13,4968,4968,1339,467,0]An[4725,13,1841,1841,1980,467,0]Am[4725,13,1841,1841,469,467,0]An[4725,13,1841,1841,5073,467,0]An[4725,13,1841,1841,3977,467,0]An[4725,13,1841,1841,4832,467,0]An[4725,13,1920,1920,3341,467,0]An[4725,13,1920,1920,4256,467,0]An[4725,13,1920,1920,4698,467,0]An[4725,13,1920,1920,4700,467,0]An[4725,13,1920,1920,4923,467,0]Ak[4725,13,1920,0,1338,467,0]Al[4725,13,3698,133,112,467,0]Am[4725,13,3698,133,3109,467,0]An[4725,13,3698,1507,1325,467,0]An[4725,13,3698,1507,3979,467,0]An[4725,13,3698,2485,1985,467,0]An[4725,13,3698,2485,4273,467,0]An[4725,13,3698,3698,4760,467,0]An[4725,13,2115,2115,1340,467,0]An[4725,13,2115,2115,1343,467,0]An[4431,13,4432,4432,3344,467,0]Am[4431,13,4432,389,4397,467,0]An[4431,13,4432,4432,2412,467,0]An[4431,13,4432,4432,2425,467,0]An[4431,13,4432,4432,4126,467,0]An[1046,13,1047,1047,3112,467,0]An[1046,13,1047,1047,4860,467,0]Am[1046,13,1830,1830,126,467,0]An[1046,13,1537,1537,1358,467,0]An[1046,13,1537,1537,4002,467,0]An[1046,13,1537,1537,4494,467,0]An[1046,13,4211,4211,5058,467,0]An[1046,13,4211,4211,5059,467,0]Am[1046,13,1925,1925,127,467,0]Am[3958,13,3959,3959,116,467,0]An[3958,13,3959,3959,2382,467,0]Ac[491,7,492,0,0,0,0]Ae[4007,7,4008,0,0,0,0]Ae[4296,7,4297,0,0,0,0]Ae[3958,7,3959,0,0,0,0]Ae[4786,7,4787,0,0,0,0]Al[4725,13,4726,1071,1562,0,0]Ai[3938,12,1840,0,1963,0,0]Al[4725,13,4726,2144,2004,0,0]Al[4725,12,1841,1841,1964,0,0]Al[3938,13,3939,3702,3300,0,0]Ab[1046,3,0,0,0,0,0]Ak[3938,13,3939,1045,474,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,13,4726,3703,3301,0,0]Al[4725,14,4726,1538,3307,0,0]Al[3938,12,3939,2136,3289,0,0]Ao[3938,13,3939,3702,4511,1572,0]Ao[3938,13,3939,3702,2405,1572,0]Ao[3938,13,3939,1045,2406,1572,0]Ao[3938,13,3939,1045,3111,1572,0]Ao[3938,13,3939,3702,3298,1572,0]Ao[3938,13,3939,3702,1987,1572,0]Ao[3938,13,3939,3702,1575,1572,0]Ao[3938,13,3939,3702,3101,1572,0]Ao[3938,13,3939,3702,2379,1572,0]Ao[3938,13,3939,3702,4144,1572,0]Ao[3938,13,3939,3702,4149,1572,0]Ao[3938,13,3939,2436,1554,1572,0]Ao[3938,13,3939,2463,4372,1572,0]?Al[3938,13,3939,4074,3325,0,0]Al[4725,13,4726,2144,3326,0,0]Al[4725,13,4968,4968,4867,0,0]Al[4725,13,4726,3165,3115,0,0]Ak[4431,13,4432,389,4397,0,0]Ai[3938,12,1840,0,1963,0,0]Al[4725,12,1841,1841,1964,0,0]32Ai[3938,13,3939,0,4983,0,0]Al[4725,13,4726,1838,4984,0,0]Al[3938,13,3939,3702,3300,0,0]Al[4725,13,4726,3703,3301,0,0]Ai[3938,12,1840,0,1975,0,0]Al[4725,12,1841,1841,1976,0,0]Al[1361,14,1536,1536,4393,0,0]Ai[3938,14,3939,0,2423,0,0]Al[4725,14,4726,4726,2424,0,0]Ai[4725,14,4497,0,1354,0,0]Al[3938,13,3939,4074,3325,0,0]Al[3938,13,3939,4074,4868,0,0]Al[4725,13,4726,2144,3326,0,0]Ai[3938,12,3939,0,3342,0,0]Al[3938,13,3939,0,4381,3342,0]Al[3938,13,3939,0,4701,3342,0]Al[4725,12,4726,1547,3343,0,0]Ao[4725,13,4726,1547,4382,3343,0]Ao[4725,13,4726,4856,4702,3343,0]Am[1361,13,1362,1362,125,484,0]An[1361,13,1362,1362,3970,484,0]An[1361,13,1536,1536,4001,484,0]An[1361,13,1536,1536,1357,484,0]An[1361,13,1536,1536,4393,484,0]Ak[491,13,492,492,3971,484,0]An[4007,13,4008,4008,5014,484,0]An[3938,13,3939,3702,4511,484,0]An[3938,13,3939,3702,2405,484,0]Ak[3938,13,3939,0,4244,484,0]An[3938,13,3939,1045,2406,484,0]An[3938,13,3939,1045,3111,484,0]An[3938,13,3939,1045,4668,484,0]An[3938,13,3939,3702,3298,484,0]An[3938,13,3939,3702,3300,484,0]An[3938,13,3939,3702,1987,484,0]An[3938,13,3939,3702,1575,484,0]An[3938,13,3939,3702,3101,484,0]An[3938,13,3939,3702,2379,484,0]An[3938,13,3939,3702,4144,484,0]An[3938,13,3939,3702,4149,484,0]An[3938,13,3939,3702,4929,484,0]An[3938,13,3939,3702,4767,484,0]An[3938,13,3939,2436,2391,484,0]An[3938,13,3939,2436,4253,484,0]An[3938,13,3939,2436,1554,484,0]An[3938,13,3939,2463,2395,484,0]An[3938,13,3939,2463,3328,484,0]An[3938,13,3939,2463,4372,484,0]Am[3938,13,3939,1045,474,484,0]An[3938,13,3939,4074,3325,484,0]An[3938,13,3939,4074,4868,484,0]An[3938,13,3939,4074,4391,484,0]An[3938,13,3939,4074,3140,484,0]An[3938,13,3939,4074,3327,484,0]An[3938,13,3939,4074,4390,484,0]An[3938,13,3939,1548,4159,484,0]An[3938,13,3939,1088,3996,484,0]An[3938,13,3939,4079,3331,484,0]An[3938,13,3939,4079,3345,484,0]An[3938,13,3939,4079,4158,484,0]Ak[3938,13,3939,0,3322,484,0]Ak[3938,13,3939,0,4284,484,0]Ak[3938,13,3939,0,4503,484,0]Ak[3938,13,3939,0,4136,484,0]Ak[3938,13,3939,0,4381,484,0]Ak[3938,13,3939,0,1599,484,0]Ak[3938,13,3939,0,4926,484,0]Ak[3938,13,3939,0,1320,484,0]Ak[3938,13,3939,0,1582,484,0]Ak[3938,13,3939,0,2426,484,0]Ak[3938,13,3939,0,3306,484,0]Ak[3938,13,3939,0,3137,484,0]Ak[3938,13,3939,0,4489,484,0]Ak[3938,13,3939,0,2010,484,0]Ak[3938,13,3939,0,4110,484,0]Ak[3938,13,3939,0,4485,484,0]Ak[3938,13,3939,0,4499,484,0]Ak[3938,13,3939,0,4506,484,0]Ak[3938,13,3939,0,4791,484,0]Ak[3938,13,3939,0,4806,484,0]Ak[3938,13,3939,0,3983,484,0]Ak[3938,13,3939,0,4367,484,0]Ak[3938,13,3939,0,4152,484,0]Ak[3938,13,3939,0,4983,484,0]Ak[3938,13,3939,0,4104,484,0]Ak[3938,13,3939,0,3973,484,0]Ak[3938,13,3939,0,3120,484,0]Ak[3938,13,3939,0,4482,484,0]Ak[3938,13,3939,0,4670,484,0]Ak[3938,13,3939,0,4116,484,0]Ak[3938,13,3939,0,4119,484,0]Ak[3938,13,3939,0,4124,484,0]Ak[3938,13,3939,0,4825,484,0]Ak[3938,13,3939,0,3309,484,0]Ak[3938,13,3939,0,4701,484,0]Aj[3938,13,3939,0,481,484,0]Aj[3938,13,3939,0,117,484,0]Ak[3938,13,3939,0,2414,484,0]Ak[3938,13,3939,0,2423,484,0]Aj[3938,13,3697,0,111,484,0]Ak[3938,13,3697,0,3108,484,0]Ak[3938,13,3697,0,1324,484,0]Ak[3938,13,3697,0,3978,484,0]Ak[3938,13,3697,0,1984,484,0]Ak[3938,13,3697,0,4272,484,0]Ak[3938,13,3697,0,4759,484,0]Ak[3938,13,1840,0,1979,484,0]Aj[3938,13,1840,0,468,484,0]Ak[3938,13,1840,0,5072,484,0]Ak[3938,13,1840,0,3976,484,0]Ak[3938,13,1840,0,4829,484,0]Ak[3938,13,1919,0,3340,484,0]Ak[3938,13,1919,0,4255,484,0]Ak[3938,13,1919,0,4697,484,0]Ak[3938,13,1919,0,4699,484,0]Ak[3938,13,1919,0,4922,484,0]Ak[3938,13,1919,0,1337,484,0]An[4725,13,4726,4516,4245,484,0]An[4725,13,4726,3165,3115,484,0]An[4725,13,4726,1071,1562,484,0]An[4725,13,4726,2144,2004,484,0]An[4725,13,4726,2144,3326,484,0]An[4725,13,4726,2144,3332,484,0]An[4725,13,4726,3703,3301,484,0]An[4725,13,4726,1067,3323,484,0]An[4725,13,4726,1838,4285,484,0]An[4725,13,4726,2437,2392,484,0]An[4725,13,4726,2437,4251,484,0]An[4725,13,4726,1903,5131,484,0]An[4725,13,4726,4293,5101,484,0]An[4725,13,4726,1547,4504,484,0]An[4725,13,4726,1547,4137,484,0]An[4725,13,4726,1547,4382,484,0]An[4725,13,4726,1952,1600,484,0]An[4725,13,4726,1952,4927,484,0]An[4725,13,4726,3156,1321,484,0]An[4725,13,4726,3165,4768,484,0]An[4725,13,4726,1522,1583,484,0]An[4725,13,4726,1522,4148,484,0]An[4725,13,4726,1522,3321,484,0]An[4725,13,4726,1522,3136,484,0]An[4725,13,4726,1522,4822,484,0]An[4725,13,4726,1522,3296,484,0]An[4725,13,4726,1538,2427,484,0]An[4725,13,4726,1538,3307,484,0]An[4725,13,4726,1538,3138,484,0]An[4725,13,4726,1538,4490,484,0]An[4725,13,4726,1071,3141,484,0]An[4725,13,4726,1071,4280,484,0]An[4725,13,4726,1076,2011,484,0]An[4725,13,4726,1076,3346,484,0]An[4725,13,4726,1076,3982,484,0]An[4725,13,4726,2144,4000,484,0]An[4725,13,4726,2144,4392,484,0]An[4725,13,4726,2144,4114,484,0]An[4725,13,4726,3703,4486,484,0]An[4725,13,4726,3703,3133,484,0]An[4725,13,4726,3703,4358,484,0]An[4725,13,4726,3703,5010,484,0]An[4725,13,4726,3703,1342,484,0]An[4725,13,4726,1067,4500,484,0]An[4725,13,4726,3283,4507,484,0]An[4725,13,4726,3283,4792,484,0]An[4725,13,4726,3283,4807,484,0]An[4725,13,4726,3283,3984,484,0]An[4725,13,4726,1838,4368,484,0]An[4725,13,4726,1838,4154,484,0]An[4725,13,4726,1838,4984,484,0]An[4725,13,4726,1838,4106,484,0]An[4725,13,4726,1838,3974,484,0]An[4725,13,4726,1512,3121,484,0]An[4725,13,4726,1512,4373,484,0]An[4725,13,4726,1512,3313,484,0]An[4725,13,4726,1512,3335,484,0]An[4725,13,4726,1512,4121,484,0]An[4725,13,4726,1512,4484,484,0]An[4725,13,4726,1512,4672,484,0]An[4725,13,4726,1512,2385,484,0]An[4725,13,4726,2437,4676,484,0]An[4725,13,4726,2437,2396,484,0]An[4725,13,4726,2437,4117,484,0]An[4725,13,4726,2437,3968,484,0]An[4725,13,4726,2437,3329,484,0]An[4725,13,4726,1903,4275,484,0]An[4725,13,4726,1903,4498,484,0]An[4725,13,4726,1903,5013,484,0]An[4725,13,4726,1903,2398,484,0]An[4725,13,4726,1903,4766,484,0]An[4725,13,4726,1930,4488,484,0]An[4725,13,4726,1930,4252,484,0]An[4725,13,4726,1930,4120,484,0]An[4725,13,4726,1930,4125,484,0]Ak[4725,13,4726,0,4396,484,0]Ak[4725,13,4726,0,4826,484,0]An[4725,13,4726,4293,3310,484,0]An[4725,13,4726,4293,5106,484,0]An[4725,13,4726,4856,4702,484,0]Am[4725,13,4726,4726,482,484,0]Am[4725,13,4726,4726,118,484,0]An[4725,13,4726,4726,2415,484,0]An[4725,13,4726,4726,2424,484,0]An[4725,13,4726,4726,3119,484,0]An[4725,13,1836,1836,4286,484,0]An[4725,13,4968,4968,4867,484,0]An[4725,13,4968,4968,1339,484,0]An[4725,13,1841,1841,1980,484,0]Am[4725,13,1841,1841,469,484,0]An[4725,13,1841,1841,5073,484,0]An[4725,13,1841,1841,3977,484,0]An[4725,13,1841,1841,4832,484,0]An[4725,13,1920,1920,3341,484,0]An[4725,13,1920,1920,4256,484,0]An[4725,13,1920,1920,4698,484,0]An[4725,13,1920,1920,4700,484,0]An[4725,13,1920,1920,4923,484,0]Ak[4725,13,1920,0,1338,484,0]Al[4725,13,3698,133,112,484,0]Am[4725,13,3698,133,3109,484,0]An[4725,13,3698,1507,1325,484,0]An[4725,13,3698,1507,3979,484,0]An[4725,13,3698,2485,1985,484,0]An[4725,13,3698,2485,4273,484,0]An[4725,13,3698,3698,4760,484,0]An[4725,13,2115,2115,1340,484,0]An[4725,13,2115,2115,1343,484,0]An[1046,13,1047,1047,3112,484,0]An[1046,13,1047,1047,4860,484,0]Am[1046,13,1830,1830,126,484,0]An[1046,13,1537,1537,1358,484,0]An[1046,13,1537,1537,4002,484,0]An[1046,13,1537,1537,4494,484,0]An[1046,13,4211,4211,5058,484,0]An[1046,13,4211,4211,5059,484,0]Am[1046,13,1925,1925,127,484,0]Am[3958,13,3959,3959,116,484,0]An[3958,13,3959,3959,2382,484,0]Ah[3938,5,3939,3156,0,0,0]Ah[4725,5,4726,3156,0,0,0]Ah[3938,5,3697,1507,0,0,0]Ah[4725,5,3698,1507,0,0,0]Al[1046,15,1047,1047,4860,0,0]Ah[3938,6,1919,1510,0,0,0]Ah[4725,6,1920,1510,0,0,0]Ae[4725,6,4968,0,0,0,0]Ae[4725,6,2115,0,0,0,0]Ah[4725,6,4726,3703,0,0,0]1Al[4725,15,4726,1512,3313,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]Al[3938,15,3939,4074,3140,0,0]Ai[3938,15,3939,0,4485,0,0]Al[4725,15,4726,1071,3141,0,0]Al[4725,15,4726,3703,4486,0,0]Al[4725,15,4726,1903,4498,0,0]0Ae[1361,5,1536,0,0,0,0]Ae[1046,5,1537,0,0,0,0]Ab[1361,3,0,0,0,0,0]Ai[3938,12,3697,0,4757,0,0]Al[3938,13,3697,0,3108,4757,0]Al[3938,13,3697,0,3978,4757,0]Al[3938,13,3697,0,4272,4757,0]Al[4725,12,3698,3698,4758,0,0]An[4725,13,3698,133,3109,4758,0]Ao[4725,13,3698,1507,3979,4758,0]Ao[4725,13,3698,2485,4273,4758,0]Al[1046,13,1047,1047,4860,0,0]Ai[3938,14,3939,0,1320,0,0]Ai[3938,14,3939,0,2426,0,0]Ai[3938,14,3939,0,2010,0,0]Al[4725,14,4726,3156,1321,0,0]Al[4725,14,4726,1538,2427,0,0]Al[4725,14,4726,1076,2011,0,0]Al[4725,14,4726,2437,3968,0,0]An[1361,13,1362,1362,125,1322,0]Ao[1361,13,1362,1362,3970,1322,0]Ao[3938,13,3939,3702,3300,1322,0]Ao[3938,13,3939,3702,4929,1322,0]Ao[3938,13,3939,3702,4767,1322,0]Ao[3938,13,3939,2436,2391,1322,0]Ao[3938,13,3939,2436,4253,1322,0]Ao[3938,13,3939,4074,4391,1322,0]Ao[3938,13,3939,4074,3140,1322,0]Ao[3938,13,3939,4074,3327,1322,0]Ao[3938,13,3939,4074,4390,1322,0]Ao[3938,13,3939,4079,3345,1322,0]Ao[3938,13,3939,4079,4158,1322,0]Al[3938,13,3939,0,1599,1322,0]Al[3938,13,3939,0,4926,1322,0]Al[3938,13,3939,0,1582,1322,0]Al[3938,13,3939,0,2426,1322,0]Al[3938,13,3939,0,3306,1322,0]Al[3938,13,3939,0,3137,1322,0]Al[3938,13,3939,0,4489,1322,0]Al[3938,13,3939,0,2010,1322,0]Al[3938,13,3939,0,4110,1322,0]Al[3938,13,3939,0,4485,1322,0]Al[3938,13,3939,0,4506,1322,0]Al[3938,13,3939,0,4791,1322,0]Al[3938,13,3939,0,4806,1322,0]Al[3938,13,3939,0,3983,1322,0]Al[3938,13,3939,0,4367,1322,0]Al[3938,13,3939,0,4152,1322,0]Al[3938,13,3939,0,4983,1322,0]Al[3938,13,3939,0,4104,1322,0]Al[3938,13,3939,0,3973,1322,0]Al[3938,13,3939,0,3120,1322,0]Al[3938,13,3939,0,4482,1322,0]Al[3938,13,3939,0,4670,1322,0]Al[3938,13,3939,0,4116,1322,0]Al[3938,13,3939,0,4119,1322,0]Al[3938,13,3939,0,4124,1322,0]Al[3938,13,3939,0,4825,1322,0]Al[3938,13,3939,0,3309,1322,0]Ak[3938,13,3939,0,481,1322,0]Ak[3938,13,3939,0,117,1322,0]Al[3938,13,3939,0,2414,1322,0]Ak[3938,13,3697,0,111,1322,0]Al[3938,13,3697,0,3108,1322,0]Al[3938,13,3697,0,1324,1322,0]Al[3938,13,3697,0,3978,1322,0]Al[3938,13,3697,0,1984,1322,0]Al[3938,13,3697,0,4272,1322,0]Al[3938,13,1919,0,4922,1322,0]Al[3938,13,1919,0,1337,1322,0]Ao[4725,13,4726,1952,1600,1322,0]Ao[4725,13,4726,1952,4927,1322,0]Ao[4725,13,4726,3165,4768,1322,0]Ao[4725,13,4726,1522,1583,1322,0]Ao[4725,13,4726,1522,4148,1322,0]Ao[4725,13,4726,1522,3321,1322,0]Ao[4725,13,4726,1522,3136,1322,0]Ao[4725,13,4726,1522,4822,1322,0]Ao[4725,13,4726,1522,3296,1322,0]Ao[4725,13,4726,1538,2427,1322,0]Ao[4725,13,4726,1538,3307,1322,0]Ao[4725,13,4726,1538,3138,1322,0]Ao[4725,13,4726,1538,4490,1322,0]Ao[4725,13,4726,1071,3141,1322,0]Ao[4725,13,4726,1071,4280,1322,0]Ao[4725,13,4726,1076,2011,1322,0]Ao[4725,13,4726,1076,3346,1322,0]Ao[4725,13,4726,1076,3982,1322,0]Ao[4725,13,4726,2144,4392,1322,0]Ao[4725,13,4726,2144,4114,1322,0]Ao[4725,13,4726,3703,4486,1322,0]Ao[4725,13,4726,3703,3133,1322,0]Ao[4725,13,4726,3703,4358,1322,0]Ao[4725,13,4726,3703,5010,1322,0]Ao[4725,13,4726,3283,4507,1322,0]Ao[4725,13,4726,3283,4792,1322,0]Ao[4725,13,4726,3283,4807,1322,0]Ao[4725,13,4726,3283,3984,1322,0]Ao[4725,13,4726,1838,4368,1322,0]Ao[4725,13,4726,1838,4154,1322,0]Ao[4725,13,4726,1838,4984,1322,0]Ao[4725,13,4726,1838,4106,1322,0]Ao[4725,13,4726,1838,3974,1322,0]Ao[4725,13,4726,1512,3121,1322,0]Ao[4725,13,4726,1512,3313,1322,0]Ao[4725,13,4726,1512,3335,1322,0]Ao[4725,13,4726,1512,4121,1322,0]Ao[4725,13,4726,1512,4484,1322,0]Ao[4725,13,4726,1512,4672,1322,0]Ao[4725,13,4726,1512,2385,1322,0]Ao[4725,13,4726,2437,4676,1322,0]Ao[4725,13,4726,2437,4117,1322,0]Ao[4725,13,4726,1903,4498,1322,0]Ao[4725,13,4726,1903,5013,1322,0]Ao[4725,13,4726,1903,2398,1322,0]Ao[4725,13,4726,1903,4766,1322,0]Ao[4725,13,4726,1930,4120,1322,0]Ao[4725,13,4726,1930,4125,1322,0]Al[4725,13,4726,0,4396,1322,0]Al[4725,13,4726,0,4826,1322,0]Ao[4725,13,4726,4293,3310,1322,0]Ao[4725,13,4726,4293,5106,1322,0]An[4725,13,4726,4726,482,1322,0]An[4725,13,4726,4726,118,1322,0]Ao[4725,13,4726,4726,2415,1322,0]Ao[4725,13,4726,4726,3119,1322,0]Ao[4725,13,1836,1836,4286,1322,0]Ao[4725,13,4968,4968,4867,1322,0]Ao[4725,13,4968,4968,1339,1322,0]Ao[4725,13,1920,1920,4923,1322,0]Al[4725,13,1920,0,1338,1322,0]Am[4725,13,3698,133,112,1322,0]An[4725,13,3698,133,3109,1322,0]Ao[4725,13,3698,1507,1325,1322,0]Ao[4725,13,3698,1507,3979,1322,0]Ao[4725,13,3698,2485,1985,1322,0]Ao[4725,13,3698,2485,4273,1322,0]Ao[4725,13,2115,2115,1343,1322,0]Ao[4431,13,4432,4432,2412,1322,0]Ao[4431,13,4432,4432,2425,1322,0]Ao[4431,13,4432,4432,4126,1322,0]Ao[1046,13,1047,1047,4860,1322,0]Ao[1046,13,1537,1537,4494,1322,0]Al[3938,13,3939,3702,3300,0,0]Al[3938,13,3939,2436,2391,0,0]Ak[3938,13,3939,1045,474,0,0]Al[4725,13,4726,3703,3301,0,0]Al[3938,13,3939,0,4119,1328,0]Ao[4725,13,4726,1930,4120,1328,0]Ai[4725,14,3134,0,4263,0,0]Ai[4725,14,4726,0,4396,0,0]Ai[3938,13,3939,0,2414,0,0]Al[4725,13,4726,4726,2415,0,0]Ai[3938,13,3939,0,4124,0,0]Al[4725,13,4726,1930,4125,0,0]Ai[3938,14,1840,0,1979,0,0]Al[4725,14,1841,1841,1980,0,0]Al[4725,12,4726,1903,4797,0,0]Ao[4725,13,4726,1903,5131,4797,0]=Al[4725,13,4968,4968,4867,0,0]Ah[3938,5,3939,2436,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Al[1361,15,1362,1362,3970,0,0]0Al[4725,15,4726,1522,3321,0,0]Ah[4725,5,4726,1071,0,0,0]Ah[3938,15,3939,0,481,0,0]Ak[4725,15,4726,4726,482,0,0]Al[3958,15,3959,3959,2382,0,0]Al[4725,15,4726,1522,3136,0,0]Al[4725,15,2115,2115,1340,0,0]98Ah[3938,5,3939,3702,0,0,0]2Al[4725,15,4726,2144,4000,0,0]Ah[3938,5,3939,1522,0,0,0]Ah[4725,5,4726,1522,0,0,0]Ae[4725,8,1836,0,0,0,0]987>Al[4725,15,4726,3703,1342,0,0]>Ah[3938,5,3939,1952,0,0,0]Ah[4725,5,4726,1952,0,0,0]Al[3938,13,3939,2436,2391,0,0]Al[3938,13,3939,2463,2395,0,0]Al[4725,13,4726,2144,2004,0,0]Al[4725,13,4726,2437,2392,0,0]An[1361,13,1362,1362,125,1560,0]Ao[1361,13,1362,1362,3970,1560,0]Ao[1361,13,1536,1536,4001,1560,0]Ao[1361,13,1536,1536,1357,1560,0]Ao[1361,13,1536,1536,4393,1560,0]Al[491,13,492,492,3971,1560,0]Ao[4007,13,4008,4008,5014,1560,0]Ao[3938,13,3939,3702,4511,1560,0]Ao[3938,13,3939,3702,2405,1560,0]Al[3938,13,3939,0,4244,1560,0]Ao[3938,13,3939,1045,2406,1560,0]Ao[3938,13,3939,1045,3111,1560,0]Ao[3938,13,3939,1045,4668,1560,0]Ao[3938,13,3939,3702,3298,1560,0]Ao[3938,13,3939,3702,3300,1560,0]Ao[3938,13,3939,3702,1987,1560,0]Ao[3938,13,3939,3702,1575,1560,0]Ao[3938,13,3939,3702,3101,1560,0]Ao[3938,13,3939,3702,2379,1560,0]Ao[3938,13,3939,3702,4144,1560,0]Ao[3938,13,3939,3702,4149,1560,0]Ao[3938,13,3939,3702,4929,1560,0]Ao[3938,13,3939,3702,4767,1560,0]Ao[3938,13,3939,2436,2391,1560,0]Ao[3938,13,3939,2436,4253,1560,0]Ao[3938,13,3939,2436,1554,1560,0]Ao[3938,13,3939,2463,2395,1560,0]Ao[3938,13,3939,2463,3328,1560,0]Ao[3938,13,3939,2463,4372,1560,0]An[3938,13,3939,1045,474,1560,0]Ao[3938,13,3939,4074,3325,1560,0]Ao[3938,13,3939,4074,4868,1560,0]Ao[3938,13,3939,4074,4391,1560,0]Ao[3938,13,3939,4074,3140,1560,0]Ao[3938,13,3939,4074,3327,1560,0]Ao[3938,13,3939,4074,4390,1560,0]Ao[3938,13,3939,1548,4159,1560,0]Ao[3938,13,3939,1088,3996,1560,0]Ao[3938,13,3939,4079,3331,1560,0]Ao[3938,13,3939,4079,3345,1560,0]Ao[3938,13,3939,4079,4158,1560,0]Al[3938,13,3939,0,3322,1560,0]Al[3938,13,3939,0,4284,1560,0]Al[3938,13,3939,0,4503,1560,0]Al[3938,13,3939,0,4136,1560,0]Al[3938,13,3939,0,4381,1560,0]Al[3938,13,3939,0,1599,1560,0]Al[3938,13,3939,0,4926,1560,0]Al[3938,13,3939,0,1320,1560,0]Al[3938,13,3939,0,1582,1560,0]Al[3938,13,3939,0,2426,1560,0]Al[3938,13,3939,0,3306,1560,0]Al[3938,13,3939,0,3137,1560,0]Al[3938,13,3939,0,4489,1560,0]Al[3938,13,3939,0,2010,1560,0]Al[3938,13,3939,0,4110,1560,0]Al[3938,13,3939,0,4485,1560,0]Al[3938,13,3939,0,4499,1560,0]Al[3938,13,3939,0,4506,1560,0]Al[3938,13,3939,0,4791,1560,0]Al[3938,13,3939,0,4806,1560,0]Al[3938,13,3939,0,3983,1560,0]Al[3938,13,3939,0,4367,1560,0]Al[3938,13,3939,0,4152,1560,0]Al[3938,13,3939,0,4983,1560,0]Al[3938,13,3939,0,4104,1560,0]Al[3938,13,3939,0,3973,1560,0]Al[3938,13,3939,0,3120,1560,0]Al[3938,13,3939,0,4482,1560,0]Al[3938,13,3939,0,4670,1560,0]Al[3938,13,3939,0,4116,1560,0]Al[3938,13,3939,0,4119,1560,0]Al[3938,13,3939,0,4124,1560,0]Al[3938,13,3939,0,4825,1560,0]Al[3938,13,3939,0,3309,1560,0]Al[3938,13,3939,0,4701,1560,0]Ak[3938,13,3939,0,481,1560,0]Ak[3938,13,3939,0,117,1560,0]Al[3938,13,3939,0,2414,1560,0]Al[3938,13,3939,0,2423,1560,0]Ak[3938,13,3697,0,111,1560,0]Al[3938,13,3697,0,3108,1560,0]Al[3938,13,3697,0,1324,1560,0]Al[3938,13,3697,0,3978,1560,0]Al[3938,13,3697,0,1984,1560,0]Al[3938,13,3697,0,4272,1560,0]Al[3938,13,3697,0,4759,1560,0]Al[3938,13,1840,0,1979,1560,0]Ak[3938,13,1840,0,468,1560,0]Al[3938,13,1840,0,5072,1560,0]Al[3938,13,1840,0,3976,1560,0]Al[3938,13,1840,0,4829,1560,0]Al[3938,13,1919,0,3340,1560,0]Al[3938,13,1919,0,4255,1560,0]Al[3938,13,1919,0,4697,1560,0]Al[3938,13,1919,0,4699,1560,0]Al[3938,13,1919,0,4922,1560,0]Al[3938,13,1919,0,1337,1560,0]Ao[4725,13,4726,4516,4245,1560,0]Ao[4725,13,4726,3165,3115,1560,0]Ao[4725,13,4726,1071,1562,1560,0]Ao[4725,13,4726,2144,2004,1560,0]Ao[4725,13,4726,2144,3326,1560,0]Ao[4725,13,4726,2144,3332,1560,0]Ao[4725,13,4726,3703,3301,1560,0]Ao[4725,13,4726,1067,3323,1560,0]Ao[4725,13,4726,1838,4285,1560,0]Ao[4725,13,4726,2437,2392,1560,0]Ao[4725,13,4726,2437,4251,1560,0]Ao[4725,13,4726,1903,5131,1560,0]Ao[4725,13,4726,4293,5101,1560,0]Ao[4725,13,4726,1547,4504,1560,0]Ao[4725,13,4726,1547,4137,1560,0]Ao[4725,13,4726,1547,4382,1560,0]Ao[4725,13,4726,1952,1600,1560,0]Ao[4725,13,4726,1952,4927,1560,0]Ao[4725,13,4726,3156,1321,1560,0]Ao[4725,13,4726,3165,4768,1560,0]Ao[4725,13,4726,1522,1583,1560,0]Ao[4725,13,4726,1522,4148,1560,0]Ao[4725,13,4726,1522,3321,1560,0]Ao[4725,13,4726,1522,3136,1560,0]Ao[4725,13,4726,1522,4822,1560,0]Ao[4725,13,4726,1522,3296,1560,0]Ao[4725,13,4726,1538,2427,1560,0]Ao[4725,13,4726,1538,3307,1560,0]Ao[4725,13,4726,1538,3138,1560,0]Ao[4725,13,4726,1538,4490,1560,0]Ao[4725,13,4726,1071,3141,1560,0]Ao[4725,13,4726,1071,4280,1560,0]Ao[4725,13,4726,1076,2011,1560,0]Ao[4725,13,4726,1076,3346,1560,0]Ao[4725,13,4726,1076,3982,1560,0]Ao[4725,13,4726,2144,4000,1560,0]Ao[4725,13,4726,2144,4392,1560,0]Ao[4725,13,4726,2144,4114,1560,0]Ao[4725,13,4726,3703,4486,1560,0]Ao[4725,13,4726,3703,3133,1560,0]Ao[4725,13,4726,3703,4358,1560,0]Ao[4725,13,4726,3703,5010,1560,0]Ao[4725,13,4726,3703,1342,1560,0]Ao[4725,13,4726,1067,4500,1560,0]Ao[4725,13,4726,3283,4507,1560,0]Ao[4725,13,4726,3283,4792,1560,0]Ao[4725,13,4726,3283,4807,1560,0]Ao[4725,13,4726,3283,3984,1560,0]Ao[4725,13,4726,1838,4368,1560,0]Ao[4725,13,4726,1838,4154,1560,0]Ao[4725,13,4726,1838,4984,1560,0]Ao[4725,13,4726,1838,4106,1560,0]Ao[4725,13,4726,1838,3974,1560,0]Ao[4725,13,4726,1512,3121,1560,0]Ao[4725,13,4726,1512,4373,1560,0]Ao[4725,13,4726,1512,3313,1560,0]Ao[4725,13,4726,1512,3335,1560,0]Ao[4725,13,4726,1512,4121,1560,0]Ao[4725,13,4726,1512,4484,1560,0]Ao[4725,13,4726,1512,4672,1560,0]Ao[4725,13,4726,1512,2385,1560,0]Ao[4725,13,4726,2437,4676,1560,0]Ao[4725,13,4726,2437,2396,1560,0]Ao[4725,13,4726,2437,4117,1560,0]Ao[4725,13,4726,2437,3968,1560,0]Ao[4725,13,4726,2437,3329,1560,0]Ao[4725,13,4726,1903,4275,1560,0]Ao[4725,13,4726,1903,4498,1560,0]Ao[4725,13,4726,1903,5013,1560,0]Ao[4725,13,4726,1903,2398,1560,0]Ao[4725,13,4726,1903,4766,1560,0]Ao[4725,13,4726,1930,4488,1560,0]Ao[4725,13,4726,1930,4252,1560,0]Ao[4725,13,4726,1930,4120,1560,0]Ao[4725,13,4726,1930,4125,1560,0]Al[4725,13,4726,0,4396,1560,0]Al[4725,13,4726,0,4826,1560,0]Ao[4725,13,4726,4293,3310,1560,0]Ao[4725,13,4726,4293,5106,1560,0]Ao[4725,13,4726,4856,4702,1560,0]An[4725,13,4726,4726,482,1560,0]An[4725,13,4726,4726,118,1560,0]Ao[4725,13,4726,4726,2415,1560,0]Ao[4725,13,4726,4726,2424,1560,0]Ao[4725,13,4726,4726,3119,1560,0]Ao[4725,13,1836,1836,4286,1560,0]Ao[4725,13,4968,4968,4867,1560,0]Ao[4725,13,4968,4968,1339,1560,0]Ao[4725,13,1841,1841,1980,1560,0]An[4725,13,1841,1841,469,1560,0]Ao[4725,13,1841,1841,5073,1560,0]Ao[4725,13,1841,1841,3977,1560,0]Ao[4725,13,1841,1841,4832,1560,0]Ao[4725,13,1920,1920,3341,1560,0]Ao[4725,13,1920,1920,4256,1560,0]Ao[4725,13,1920,1920,4698,1560,0]Ao[4725,13,1920,1920,4700,1560,0]Ao[4725,13,1920,1920,4923,1560,0]Al[4725,13,1920,0,1338,1560,0]Am[4725,13,3698,133,112,1560,0]An[4725,13,3698,133,3109,1560,0]Ao[4725,13,3698,1507,1325,1560,0]Ao[4725,13,3698,1507,3979,1560,0]Ao[4725,13,3698,2485,1985,1560,0]Ao[4725,13,3698,2485,4273,1560,0]Ao[4725,13,3698,3698,4760,1560,0]Ao[4725,13,2115,2115,1340,1560,0]Ao[4725,13,2115,2115,1343,1560,0]Ao[4431,13,4432,4432,3344,1560,0]An[4431,13,4432,389,4397,1560,0]Ao[4431,13,4432,4432,2412,1560,0]Ao[4431,13,4432,4432,2425,1560,0]Ao[4431,13,4432,4432,4126,1560,0]Ao[1046,13,1047,1047,3112,1560,0]Ao[1046,13,1047,1047,4860,1560,0]An[1046,13,1830,1830,126,1560,0]Ao[1046,13,1537,1537,1358,1560,0]Ao[1046,13,1537,1537,4002,1560,0]Ao[1046,13,1537,1537,4494,1560,0]Ao[1046,13,4211,4211,5058,1560,0]Ao[1046,13,4211,4211,5059,1560,0]An[1046,13,1925,1925,127,1560,0]An[3958,13,3959,3959,116,1560,0]Ao[3958,13,3959,3959,2382,1560,0]Ai[3938,14,3939,0,2010,0,0]Al[4725,14,4726,1076,2011,0,0]Ak[1361,14,1362,1362,125,0,0]Ac[491,7,492,0,0,0,0]Al[3938,13,3939,2436,2391,0,0]Ae[1046,2,1047,0,0,0,0]Ae[4786,7,4787,0,0,0,0]Al[3938,13,3939,3702,3300,0,0]Ae[4725,2,4726,0,0,0,0]Al[4725,13,4726,2437,2392,0,0]Ah[3938,2,3939,4726,0,0,0]Ai[3938,13,3939,0,4825,0,0]Ai[3938,14,3939,0,3306,0,0]Ai[3938,14,3939,0,4152,0,0]5Ai[4725,13,4726,0,4826,0,0]Al[4725,14,4726,1538,3307,0,0]Al[4725,14,4726,1838,4154,0,0]Ai[4725,14,4726,0,4396,0,0]Al[3938,13,3939,0,1599,3116,0]Al[3938,13,3939,0,1582,3116,0]Al[3938,13,3939,0,3120,3116,0]Al[3938,13,3939,0,4825,3116,0]Al[3938,13,3939,0,2414,3116,0]Ao[4725,13,4726,1952,1600,3116,0]Ao[4725,13,4726,1522,1583,3116,0]Ao[4725,13,4726,1512,3121,3116,0]Ao[4725,13,4726,1512,3313,3116,0]Al[4725,13,4726,1903,4498,0,0]Al[4725,13,4726,0,4826,3116,0]Ao[4725,13,4726,4726,2415,3116,0]Al[4725,12,1836,1836,3116,0,0]Al[4431,14,4432,4432,2412,0,0]Al[3938,13,3939,0,1599,3117,0]Al[3938,13,3939,0,1582,3117,0]Al[3938,13,3939,0,3120,3117,0]Al[3938,13,3939,0,4825,3117,0]Al[3938,13,3939,0,2414,3117,0]Ao[4725,13,4726,1952,1600,3117,0]Ao[4725,13,4726,1522,1583,3117,0]Ao[4725,13,4726,1512,3121,3117,0]Ao[4725,13,4726,1512,3313,3117,0]Ao[4725,13,4726,1512,2385,3117,0]Al[4725,13,4726,0,4826,3117,0]Ao[4725,13,4726,4726,2415,3117,0]Al[4725,12,1836,1836,3117,0,0]Al[3938,13,3939,4079,3331,0,0]Al[4725,13,4726,2144,3332,0,0]Al[1046,13,1537,1537,4002,0,0]Al[4725,13,4726,2437,2392,0,0]Ah[3938,14,1840,0,468,0,0]Ak[4725,14,1841,1841,469,0,0]Al[3938,13,3939,2463,2395,0,0]3Ai[3938,12,3939,0,3342,0,0]Al[3938,13,3939,0,4381,3342,0]Al[3938,13,3939,0,4701,3342,0]Al[4725,12,4726,1547,3343,0,0]Ao[4725,13,4726,1547,4382,3343,0]Ao[4725,13,4726,4856,4702,3343,0]Al[1046,14,1047,1047,3112,0,0]Ai[3938,14,3939,0,1320,0,0]Al[4725,14,4726,3156,1321,0,0]Ai[3938,13,3697,0,3302,0,0]Ak[3938,13,3697,0,111,3302,0]Al[3938,13,3697,0,1324,3302,0]Al[3938,13,3697,0,1984,3302,0]Al[4725,13,3698,3698,3303,0,0]Am[4725,13,3698,133,112,3303,0]Ao[4725,13,3698,1507,1325,3303,0]Ao[4725,13,3698,2485,1985,3303,0]Ah[3938,14,1840,0,468,0,0]Ak[4725,14,1841,1841,469,0,0]Ai[4725,14,4497,0,4705,0,0]Ai[3938,14,3939,0,4482,0,0]Ai[3938,14,3939,0,4670,0,0]Al[4725,14,4726,1512,4484,0,0]Al[4725,14,4726,1512,4672,0,0]Ai[4725,14,4726,0,4396,0,0]Ai[4725,14,1341,0,4360,0,0]Al[3938,13,3939,2436,2391,0,0]Al[3938,13,3939,2463,2395,0,0]Al[4725,13,4726,2437,2392,0,0]Ai[3938,14,1840,0,1979,0,0]Al[4725,14,4726,4726,3119,0,0]Al[4725,14,1841,1841,1980,0,0]Ae[3938,4,3939,0,0,0,0]Ah[3938,2,1840,1841,0,0,0]Ae[4725,4,4726,0,0,0,0]Ae[4725,2,1841,0,0,0,0]Ac[491,7,492,0,0,0,0]:Ae[1046,2,1047,0,0,0,0]Ae[4786,7,4787,0,0,0,0]Ao[3938,13,3939,3702,4767,1330,0]Ao[3938,13,3939,4074,4391,1330,0]Ao[3938,13,3939,4074,3140,1330,0]Ao[3938,13,3939,4074,3327,1330,0]Ao[3938,13,3939,4074,4390,1330,0]Ao[3938,13,3939,4079,3345,1330,0]Ao[3938,13,3939,4079,4158,1330,0]Al[3938,13,3939,0,4485,1330,0]Ao[4725,13,4726,3703,4486,1330,0]Ai[3938,14,3939,0,2423,0,0]Al[4725,14,4726,4726,2424,0,0]Al[4431,14,4432,4432,2425,0,0]Ak[3938,13,3939,1045,474,0,0]Ai[4725,14,3134,0,4145,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]Al[4431,14,4432,4432,2412,0,0]Ai[3938,14,3939,0,4489,0,0]Al[4725,14,4726,1538,4490,0,0]10Ai[3938,12,1840,0,1975,0,0]Al[4725,12,1841,1841,1976,0,0]Ai[3938,12,3697,0,3302,0,0]Ak[3938,13,3697,0,111,3302,0]Al[3938,13,3697,0,1324,3302,0]Al[3938,13,3697,0,1984,3302,0]Al[4725,12,3698,3698,3303,0,0]Am[4725,13,3698,133,112,3303,0]Ao[4725,13,3698,1507,1325,3303,0]Ao[4725,13,3698,2485,1985,3303,0]Ai[3938,10,1840,1841,0,0,0]Af[4725,10,1841,0,0,0,0]Al[4725,15,4726,3165,4768,0,0]Al[4725,15,4726,1071,3141,0,0]Al[4725,15,4726,1076,3346,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]65Al[4725,15,4726,1903,4498,0,0]Ah[3938,5,1840,1841,0,0,0]Ae[4725,5,1841,0,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Ah[3938,5,3697,2485,0,0,0]Ah[4725,5,3698,2485,0,0,0]Al[1046,15,1047,1047,4860,0,0]Ah[3938,5,3939,3702,0,0,0]5454Ai[3938,10,3939,2136,0,0,0]Ai[3938,10,1840,1841,0,0,0]Af[4725,10,1841,0,0,0,0]Al[3938,15,3939,4079,3345,0,0]?Al[4725,15,4726,1076,3982,0,0]Al[4725,15,4726,2144,4000,0,0]Ah[4725,5,4726,2144,0,0,0]Al[3938,15,3939,4074,4391,0,0]Al[4725,15,4726,1512,3313,0,0]Ah[3938,5,3939,1076,0,0,0]Ah[4725,5,4726,1076,0,0,0]Al[4725,15,4726,1903,2398,0,0]Ai[3938,12,3939,0,4974,0,0]Al[4725,12,4726,4293,4975,0,0]Ao[4725,13,4726,4293,5101,4975,0]Ao[4725,13,4726,4293,5106,4975,0]Ak[1361,14,1362,1362,125,0,0]An[1361,13,1362,1362,125,4359,0]Ao[1046,13,1047,1047,3112,4359,0]An[1046,13,1830,1830,126,4359,0]An[1046,13,1925,1925,127,4359,0]An[3958,13,3959,3959,116,4359,0]Ak[3958,14,3959,3959,116,0,0]Al[3938,13,3939,0,1599,3297,0]Al[3938,13,3939,0,1582,3297,0]Al[3938,13,3939,0,3983,3297,0]Al[3938,13,3939,0,4119,3297,0]Ak[3938,13,3939,0,481,3297,0]Ak[3938,13,3939,0,117,3297,0]Al[3938,13,3939,0,2414,3297,0]Ao[4725,13,4726,1952,1600,3297,0]Ao[4725,13,4726,3165,4768,3297,0]Ao[4725,13,4726,1522,1583,3297,0]Ao[4725,13,4726,1071,3141,3297,0]Ao[4725,13,4726,1071,4280,3297,0]Ao[4725,13,4726,1076,3346,3297,0]Ao[4725,13,4726,3283,3984,3297,0]Ao[4725,13,4726,2437,4676,3297,0]Ao[4725,13,4726,1903,4766,3297,0]Ao[4725,13,4726,1930,4120,3297,0]An[4725,13,4726,4726,482,3297,0]An[4725,13,4726,4726,118,3297,0]Ao[4725,13,4726,4726,2415,3297,0]Al[3938,13,3939,2436,2391,0,0]Al[4725,13,4726,2437,2392,0,0]Ai[3938,12,1840,0,3130,0,0]Ai[3938,12,1840,0,3123,0,0]Al[4725,12,1841,1841,3131,0,0]Al[4725,12,1841,1841,3124,0,0]Ao[1361,13,1536,1536,4001,1970,0]Ao[1361,13,1536,1536,1357,1970,0]Al[491,13,492,492,3971,1970,0]Al[3938,13,3939,0,4244,1970,0]Ao[3938,13,3939,2436,4253,1970,0]Al[3938,13,3939,0,1599,1970,0]Al[3938,13,3939,0,1582,1970,0]Al[3938,13,3939,0,2426,1970,0]Al[3938,13,3939,0,3306,1970,0]Al[3938,13,3939,0,3137,1970,0]Al[3938,13,3939,0,4489,1970,0]Al[3938,13,3939,0,2010,1970,0]Al[3938,13,3939,0,4110,1970,0]Al[3938,13,3939,0,4506,1970,0]Al[3938,13,3939,0,4791,1970,0]Al[3938,13,3939,0,4806,1970,0]Al[3938,13,3939,0,3983,1970,0]Al[3938,13,3939,0,4367,1970,0]Al[3938,13,3939,0,4983,1970,0]Al[3938,13,3939,0,4701,1970,0]Al[3938,13,3697,0,3108,1970,0]Al[3938,13,3697,0,3978,1970,0]Al[3938,13,3697,0,4272,1970,0]Al[3938,13,3697,0,4759,1970,0]Ao[4725,13,4726,4516,4245,1970,0]Ao[4725,13,4726,4293,5101,1970,0]Ao[4725,13,4726,1952,1600,1970,0]Ao[4725,13,4726,1522,1583,1970,0]Ao[4725,13,4726,1522,3321,1970,0]Ao[4725,13,4726,1522,3296,1970,0]Ao[4725,13,4726,1538,2427,1970,0]Ao[4725,13,4726,1538,3307,1970,0]Ao[4725,13,4726,1538,3138,1970,0]Ao[4725,13,4726,1538,4490,1970,0]Ao[4725,13,4726,1076,2011,1970,0]Ao[4725,13,4726,2144,4392,1970,0]Ao[4725,13,4726,2144,4114,1970,0]Ao[4725,13,4726,3283,4507,1970,0]Ao[4725,13,4726,3283,4792,1970,0]Ao[4725,13,4726,3283,4807,1970,0]Ao[4725,13,4726,3283,3984,1970,0]Ao[4725,13,4726,1838,4368,1970,0]Ao[4725,13,4726,1838,4984,1970,0]Ao[4725,13,4726,4293,5106,1970,0]Ao[4725,13,4726,4856,4702,1970,0]An[4725,13,3698,133,3109,1970,0]Ao[4725,13,3698,1507,3979,1970,0]Ao[4725,13,3698,2485,4273,1970,0]Ao[4725,13,3698,3698,4760,1970,0]Ao[4431,13,4432,4432,2412,1970,0]Ao[1046,13,1537,1537,1358,1970,0]Ao[1046,13,1537,1537,4494,1970,0]Al[4725,13,4726,1930,4252,0,0]Al[4725,13,4726,1903,4275,0,0]Al[4725,13,4726,1903,4498,0,0]Al[4725,14,4726,1903,5013,0,0]Ai[4725,14,4765,0,4827,0,0]Ah[4725,14,4497,0,470,0,0]Ai[4725,14,4497,0,1352,0,0]Ai[4725,14,4497,0,1354,0,0]Ai[4725,14,4497,0,4705,0,0]Ai[3938,12,1840,0,3130,0,0]Ai[3938,12,1840,0,3123,0,0]Al[4725,12,1841,1841,3131,0,0]Al[4725,12,1841,1841,3124,0,0]Ae[4725,2,4726,0,0,0,0]Al[3938,13,3939,4074,3325,0,0]Al[3938,13,3939,4074,4868,0,0]Ai[3938,13,3697,0,3302,0,0]Ak[3938,13,3697,0,111,3302,0]Al[3938,13,3697,0,1324,3302,0]Al[3938,13,3697,0,1984,3302,0]Al[4725,13,3698,3698,3303,0,0]Am[4725,13,3698,133,112,3303,0]Ao[4725,13,3698,1507,1325,3303,0]Ao[4725,13,3698,2485,1985,3303,0]Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0]9854Al[3938,13,3939,3702,3300,0,0]Al[3938,13,3939,1045,2406,0,0]Al[4725,14,4726,1903,5013,0,0]Ai[4725,14,4765,0,4827,0,0]Ah[4725,14,4497,0,470,0,0]Ai[4725,14,4497,0,1352,0,0]Ai[4725,14,4497,0,4705,0,0]Al[3938,13,3939,4079,3331,0,0]Al[4725,13,4726,2144,3332,0,0]Ak[1361,14,1362,1362,125,0,0]Al[1361,14,1536,1536,1357,0,0]Al[4725,13,4726,3703,3301,0,0]Ai[3938,12,1840,0,3130,0,0]Al[4725,12,1841,1841,3131,0,0]Am[1361,13,1362,1362,125,109,0]An[1361,13,1362,1362,3970,109,0]An[1361,13,1536,1536,4001,109,0]An[1361,13,1536,1536,1357,109,0]An[1361,13,1536,1536,4393,109,0]Ak[491,13,492,492,3971,109,0]An[4007,13,4008,4008,5014,109,0]An[3938,13,3939,3702,4511,109,0]An[3938,13,3939,3702,2405,109,0]Ak[3938,13,3939,0,4244,109,0]An[3938,13,3939,1045,2406,109,0]An[3938,13,3939,1045,3111,109,0]An[3938,13,3939,1045,4668,109,0]An[3938,13,3939,3702,3298,109,0]An[3938,13,3939,3702,3300,109,0]An[3938,13,3939,3702,1987,109,0]An[3938,13,3939,3702,1575,109,0]An[3938,13,3939,3702,3101,109,0]An[3938,13,3939,3702,2379,109,0]An[3938,13,3939,3702,4144,109,0]An[3938,13,3939,3702,4149,109,0]An[3938,13,3939,3702,4929,109,0]An[3938,13,3939,3702,4767,109,0]An[3938,13,3939,2436,2391,109,0]An[3938,13,3939,2436,4253,109,0]An[3938,13,3939,2436,1554,109,0]An[3938,13,3939,2463,2395,109,0]An[3938,13,3939,2463,3328,109,0]An[3938,13,3939,2463,4372,109,0]Am[3938,13,3939,1045,474,109,0]An[3938,13,3939,4074,3325,109,0]An[3938,13,3939,4074,4868,109,0]An[3938,13,3939,4074,4391,109,0]An[3938,13,3939,4074,3140,109,0]An[3938,13,3939,4074,3327,109,0]An[3938,13,3939,4074,4390,109,0]An[3938,13,3939,1548,4159,109,0]An[3938,13,3939,1088,3996,109,0]An[3938,13,3939,4079,3331,109,0]An[3938,13,3939,4079,3345,109,0]An[3938,13,3939,4079,4158,109,0]Ak[3938,13,3939,0,3322,109,0]Ak[3938,13,3939,0,4284,109,0]Ak[3938,13,3939,0,4503,109,0]Ak[3938,13,3939,0,4136,109,0]Ak[3938,13,3939,0,4381,109,0]Ak[3938,13,3939,0,1599,109,0]Ak[3938,13,3939,0,4926,109,0]Ak[3938,13,3939,0,1320,109,0]Ak[3938,13,3939,0,1582,109,0]Ak[3938,13,3939,0,2426,109,0]Ak[3938,13,3939,0,3306,109,0]Ak[3938,13,3939,0,3137,109,0]Ak[3938,13,3939,0,4489,109,0]Ak[3938,13,3939,0,2010,109,0]Ak[3938,13,3939,0,4110,109,0]Ak[3938,13,3939,0,4485,109,0]Ak[3938,13,3939,0,4499,109,0]Ak[3938,13,3939,0,4506,109,0]Ak[3938,13,3939,0,4791,109,0]Ak[3938,13,3939,0,4806,109,0]Ak[3938,13,3939,0,3983,109,0]Ak[3938,13,3939,0,4367,109,0]Ak[3938,13,3939,0,4152,109,0]Ak[3938,13,3939,0,4983,109,0]Ak[3938,13,3939,0,4104,109,0]Ak[3938,13,3939,0,3973,109,0]Ak[3938,13,3939,0,3120,109,0]Ak[3938,13,3939,0,4482,109,0]Ak[3938,13,3939,0,4670,109,0]Ak[3938,13,3939,0,4116,109,0]Ak[3938,13,3939,0,4119,109,0]Ak[3938,13,3939,0,4124,109,0]Ak[3938,13,3939,0,4825,109,0]Ak[3938,13,3939,0,3309,109,0]Ak[3938,13,3939,0,4701,109,0]Aj[3938,13,3939,0,481,109,0]Aj[3938,13,3939,0,117,109,0]Ak[3938,13,3939,0,2414,109,0]Ak[3938,13,3939,0,2423,109,0]Aj[3938,13,3697,0,111,109,0]Ak[3938,13,3697,0,3108,109,0]Ak[3938,13,3697,0,1324,109,0]Ak[3938,13,3697,0,3978,109,0]Ak[3938,13,3697,0,1984,109,0]Ak[3938,13,3697,0,4272,109,0]Ak[3938,13,3697,0,4759,109,0]Ak[3938,13,1840,0,1979,109,0]Aj[3938,13,1840,0,468,109,0]Ak[3938,13,1840,0,5072,109,0]Ak[3938,13,1840,0,3976,109,0]Ak[3938,13,1840,0,4829,109,0]Ak[3938,13,1919,0,3340,109,0]Ak[3938,13,1919,0,4255,109,0]Ak[3938,13,1919,0,4697,109,0]Ak[3938,13,1919,0,4699,109,0]Ak[3938,13,1919,0,4922,109,0]Ak[3938,13,1919,0,1337,109,0]An[4725,13,4726,4516,4245,109,0]An[4725,13,4726,3165,3115,109,0]An[4725,13,4726,1071,1562,109,0]An[4725,13,4726,2144,2004,109,0]An[4725,13,4726,2144,3326,109,0]An[4725,13,4726,2144,3332,109,0]An[4725,13,4726,3703,3301,109,0]An[4725,13,4726,1067,3323,109,0]An[4725,13,4726,1838,4285,109,0]An[4725,13,4726,2437,2392,109,0]An[4725,13,4726,2437,4251,109,0]An[4725,13,4726,1903,5131,109,0]An[4725,13,4726,4293,5101,109,0]An[4725,13,4726,1547,4504,109,0]An[4725,13,4726,1547,4137,109,0]An[4725,13,4726,1547,4382,109,0]An[4725,13,4726,1952,1600,109,0]An[4725,13,4726,1952,4927,109,0]An[4725,13,4726,3156,1321,109,0]An[4725,13,4726,3165,4768,109,0]An[4725,13,4726,1522,1583,109,0]An[4725,13,4726,1522,4148,109,0]An[4725,13,4726,1522,3321,109,0]An[4725,13,4726,1522,3136,109,0]An[4725,13,4726,1522,4822,109,0]An[4725,13,4726,1522,3296,109,0]An[4725,13,4726,1538,2427,109,0]An[4725,13,4726,1538,3307,109,0]An[4725,13,4726,1538,3138,109,0]An[4725,13,4726,1538,4490,109,0]An[4725,13,4726,1071,3141,109,0]An[4725,13,4726,1071,4280,109,0]An[4725,13,4726,1076,2011,109,0]An[4725,13,4726,1076,3346,109,0]An[4725,13,4726,1076,3982,109,0]An[4725,13,4726,2144,4000,109,0]An[4725,13,4726,2144,4392,109,0]An[4725,13,4726,2144,4114,109,0]An[4725,13,4726,3703,4486,109,0]An[4725,13,4726,3703,3133,109,0]An[4725,13,4726,3703,4358,109,0]An[4725,13,4726,3703,5010,109,0]An[4725,13,4726,3703,1342,109,0]An[4725,13,4726,1067,4500,109,0]An[4725,13,4726,3283,4507,109,0]An[4725,13,4726,3283,4792,109,0]An[4725,13,4726,3283,4807,109,0]An[4725,13,4726,3283,3984,109,0]An[4725,13,4726,1838,4368,109,0]An[4725,13,4726,1838,4154,109,0]An[4725,13,4726,1838,4984,109,0]An[4725,13,4726,1838,4106,109,0]An[4725,13,4726,1838,3974,109,0]An[4725,13,4726,1512,3121,109,0]An[4725,13,4726,1512,4373,109,0]An[4725,13,4726,1512,3313,109,0]An[4725,13,4726,1512,3335,109,0]An[4725,13,4726,1512,4121,109,0]An[4725,13,4726,1512,4484,109,0]An[4725,13,4726,1512,4672,109,0]An[4725,13,4726,1512,2385,109,0]An[4725,13,4726,2437,4676,109,0]An[4725,13,4726,2437,2396,109,0]An[4725,13,4726,2437,4117,109,0]An[4725,13,4726,2437,3968,109,0]An[4725,13,4726,2437,3329,109,0]An[4725,13,4726,1903,4275,109,0]An[4725,13,4726,1903,4498,109,0]An[4725,13,4726,1903,5013,109,0]An[4725,13,4726,1903,2398,109,0]An[4725,13,4726,1903,4766,109,0]An[4725,13,4726,1930,4488,109,0]An[4725,13,4726,1930,4252,109,0]An[4725,13,4726,1930,4120,109,0]An[4725,13,4726,1930,4125,109,0]Ak[4725,13,4726,0,4396,109,0]Ak[4725,13,4726,0,4826,109,0]An[4725,13,4726,4293,3310,109,0]An[4725,13,4726,4293,5106,109,0]An[4725,13,4726,4856,4702,109,0]Am[4725,13,4726,4726,482,109,0]Am[4725,13,4726,4726,118,109,0]An[4725,13,4726,4726,2415,109,0]An[4725,13,4726,4726,2424,109,0]An[4725,13,4726,4726,3119,109,0]An[4725,13,1836,1836,4286,109,0]An[4725,13,4968,4968,4867,109,0]An[4725,13,4968,4968,1339,109,0]An[4725,13,1841,1841,1980,109,0]Am[4725,13,1841,1841,469,109,0]An[4725,13,1841,1841,5073,109,0]An[4725,13,1841,1841,3977,109,0]An[4725,13,1841,1841,4832,109,0]An[4725,13,1920,1920,3341,109,0]An[4725,13,1920,1920,4256,109,0]An[4725,13,1920,1920,4698,109,0]An[4725,13,1920,1920,4700,109,0]An[4725,13,1920,1920,4923,109,0]Ak[4725,13,1920,0,1338,109,0]Al[4725,13,3698,133,112,109,0]Am[4725,13,3698,133,3109,109,0]An[4725,13,3698,1507,1325,109,0]An[4725,13,3698,1507,3979,109,0]An[4725,13,3698,2485,1985,109,0]An[4725,13,3698,2485,4273,109,0]An[4725,13,3698,3698,4760,109,0]An[4725,13,2115,2115,1340,109,0]An[4725,13,2115,2115,1343,109,0]An[4431,13,4432,4432,3344,109,0]Am[4431,13,4432,389,4397,109,0]An[4431,13,4432,4432,2412,109,0]An[4431,13,4432,4432,2425,109,0]An[4431,13,4432,4432,4126,109,0]An[1046,13,1047,1047,3112,109,0]An[1046,13,1047,1047,4860,109,0]Am[1046,13,1830,1830,126,109,0]An[1046,13,1537,1537,1358,109,0]An[1046,13,1537,1537,4002,109,0]An[1046,13,1537,1537,4494,109,0]An[1046,13,4211,4211,5058,109,0]An[1046,13,4211,4211,5059,109,0]Am[1046,13,1925,1925,127,109,0]Am[3958,13,3959,3959,116,109,0]An[3958,13,3959,3959,2382,109,0]Al[3938,13,3939,3702,4929,0,0]Ai[3938,13,3939,0,4104,0,0]Al[4725,13,4726,1838,4106,0,0]Al[4725,14,4726,1903,5013,0,0]Ai[4725,14,4765,0,4827,0,0]Ah[4725,14,4497,0,470,0,0]Ai[4725,14,4497,0,1352,0,0]Ah[3938,5,3939,3702,0,0,0]Al[1361,15,1362,1362,3970,0,0]Ae[3958,6,3959,0,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Ah[4725,5,4726,1512,0,0,0]Al[3938,15,3939,3702,4767,0,0]Al[4725,15,4726,3165,4768,0,0]Ah[3938,5,3939,2436,0,0,0]Ah[4725,5,4726,2437,0,0,0]Al[4725,15,4726,2144,4000,0,0]Ah[3938,5,3939,2463,0,0,0]2Ah[4725,6,4726,1903,0,0,0]Ai[3938,19,3939,0,1599,0,0]Al[4725,19,4726,1952,1600,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]=Ai[3938,12,1840,0,4153,0,0]>Al[3938,13,1919,0,4699,4153,0]>Al[4725,12,1841,1841,4155,0,0]>Ao[4725,13,1920,1920,4700,4155,0]Ao[1046,13,4211,4211,5059,4155,0]An[3958,13,3959,3959,116,3985,0]Ao[3958,13,3959,3959,2382,3985,0]Ai[3938,14,3939,0,3137,0,0]Al[4725,14,4726,1538,3138,0,0]Ai[3938,13,3939,0,4152,0,0]Al[4725,13,4726,1838,4154,0,0]Al[3938,13,3939,2136,4355,0,0]0>=Al[1046,13,1537,1537,4494,0,0]Ae[1046,2,1047,0,0,0,0]Al[3938,13,3939,2463,2395,0,0]Al[4725,13,4726,2437,2396,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]Al[4725,13,4726,3703,3301,0,0]Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0]43Ai[3938,14,3939,0,2423,0,0]Al[4725,14,4726,4726,2424,0,0]Al[4431,14,4432,4432,2425,0,0]Al[4725,13,4726,2144,2004,0,0]Ai[3938,14,3939,0,3137,0,0]Al[4725,14,4726,1538,3138,0,0]Al[4725,13,4726,4293,5101,0,0]Al[4725,13,4726,4293,5106,0,0]Al[3938,13,3939,4079,3331,0,0]Al[4725,13,4726,2144,3332,0,0]>=Al[1361,14,1536,1536,1357,0,0]Ai[491,14,492,492,3971,0,0]Ai[3938,13,1919,0,4697,0,0]Ai[3938,13,1919,0,4699,0,0]Al[4725,13,1920,1920,4698,0,0]Al[4725,13,1920,1920,4700,0,0]76Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]Ah[3938,5,3939,4516,0,0,0]Ah[4725,5,4726,4516,0,0,0]Ai[3938,15,3939,0,4485,0,0]Ai[3938,15,3939,0,4116,0,0]Al[4725,15,4726,3703,4486,0,0]Al[4725,15,4726,2437,4117,0,0]Ah[4725,6,4726,2437,0,0,0]Ah[4725,5,4726,1930,0,0,0]Ah[3938,5,3939,2436,0,0,0]Al[3938,15,3939,4074,4390,0,0]Ah[3938,5,1919,1920,0,0,0]Ae[4725,5,1920,0,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Al[4725,15,4726,1903,4766,0,0]>Al[4725,15,4726,1522,3136,0,0]=5454Al[4725,15,4726,2437,4251,0,0]Ah[3938,5,3697,2485,0,0,0]Ah[4725,5,3698,2485,0,0,0]Ah[4725,5,4726,1903,0,0,0]98Ah[4725,6,4726,1071,0,0,0]:9Ah[3938,5,3939,1838,0,0,0]Ah[4725,5,4726,1838,0,0,0]Ae[4725,5,1836,0,0,0,0]Al[4725,13,4726,3703,3301,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]Al[1046,14,1047,1047,3112,0,0]Ae[4725,2,4726,0,0,0,0]Ai[3938,13,3939,0,4367,0,0]Al[4725,13,4726,1838,4368,0,0]Al[3938,12,3939,2136,4355,0,0]Ab[4296,3,0,0,0,0,0]Ak[1361,14,1362,1362,125,0,0]Al[1361,14,1536,1536,4001,0,0]98Al[3938,13,3939,2463,3328,0,0]Al[4725,13,4726,2437,3329,0,0]Ai[3938,13,3939,0,4791,0,0]Al[4725,13,4726,3283,4792,0,0];=Al[3938,13,3939,4074,4868,0,0]Al[4725,13,4726,2144,3326,0,0]Al[3938,13,3939,3702,3298,0,0]Al[3938,13,3939,3702,3300,0,0]Al[3938,13,3939,2463,2395,0,0]Ak[3938,13,3939,1045,474,0,0]Al[4725,13,4726,2437,2396,0,0]<;Ai[3938,13,3939,0,1599,0,0]Ai[3938,13,3939,0,1582,0,0]Al[4725,13,4726,1952,1600,0,0]Al[4725,13,4726,1522,1583,0,0]20Ae[1361,7,1536,0,0,0,0]?>Al[1361,14,1536,1536,1357,0,0]Ao[1046,13,1047,1047,4860,3145,0]Ai[3938,15,3939,0,3120,0,0]Ah[3938,5,3939,1512,0,0,0]Al[4725,15,4726,1512,3121,0,0]Ah[4725,5,4726,1512,0,0,0]Ah[3938,6,3939,3703,0,0,0]Ah[4725,6,4726,3703,0,0,0]Al[4725,15,4726,2437,4251,0,0]Ah[4725,5,4726,1930,0,0,0]Ah[3938,5,3939,1538,0,0,0]Ah[4725,5,4726,1538,0,0,0]97Ae[1046,5,1537,0,0,0,0]:8Ah[4725,6,4726,1903,0,0,0]Ah[3938,5,3939,1067,0,0,0]Ah[4725,5,4726,1067,0,0,0]Ah[3938,5,3939,1547,0,0,0]Ah[4725,5,4726,1547,0,0,0]Ah[3938,5,3939,3283,0,0,0]Ah[4725,5,4726,3283,0,0,0]Ai[3938,15,3939,0,4485,0,0]Al[4725,15,4726,3703,4486,0,0]Ah[3938,5,3939,3702,0,0,0]Al[3938,15,3939,4074,3140,0,0]Al[3938,15,3939,4074,3327,0,0]Al[3938,15,3939,4079,3345,0,0]Al[3938,15,3939,4079,4158,0,0]An[1361,13,1362,1362,125,4250,0]Ao[1361,13,1362,1362,3970,4250,0]Ao[3938,13,3939,3702,3300,4250,0]Ao[3938,13,3939,3702,4929,4250,0]Ao[3938,13,3939,3702,4767,4250,0]Ao[3938,13,3939,2436,2391,4250,0]Ao[3938,13,3939,2436,4253,4250,0]Ao[3938,13,3939,4074,4391,4250,0]Ao[3938,13,3939,4074,3140,4250,0]Ao[3938,13,3939,4074,3327,4250,0]Ao[3938,13,3939,4074,4390,4250,0]Ao[3938,13,3939,4079,3345,4250,0]Ao[3938,13,3939,4079,4158,4250,0]Al[3938,13,3939,0,1599,4250,0]Al[3938,13,3939,0,4926,4250,0]Al[3938,13,3939,0,1582,4250,0]Al[3938,13,3939,0,2426,4250,0]Al[3938,13,3939,0,3306,4250,0]Al[3938,13,3939,0,3137,4250,0]Al[3938,13,3939,0,4489,4250,0]Al[3938,13,3939,0,2010,4250,0]Al[3938,13,3939,0,4110,4250,0]Al[3938,13,3939,0,4485,4250,0]Al[3938,13,3939,0,4506,4250,0]Al[3938,13,3939,0,4791,4250,0]Al[3938,13,3939,0,4806,4250,0]Al[3938,13,3939,0,3983,4250,0]Al[3938,13,3939,0,4367,4250,0]Al[3938,13,3939,0,4152,4250,0]Al[3938,13,3939,0,4983,4250,0]Al[3938,13,3939,0,4104,4250,0]Al[3938,13,3939,0,3973,4250,0]Al[3938,13,3939,0,3120,4250,0]Al[3938,13,3939,0,4482,4250,0]Al[3938,13,3939,0,4670,4250,0]Al[3938,13,3939,0,4116,4250,0]Al[3938,13,3939,0,4119,4250,0]Al[3938,13,3939,0,4124,4250,0]Al[3938,13,3939,0,4825,4250,0]Al[3938,13,3939,0,3309,4250,0]Ak[3938,13,3939,0,481,4250,0]Ak[3938,13,3939,0,117,4250,0]Al[3938,13,3939,0,2414,4250,0]Ak[3938,13,3697,0,111,4250,0]Al[3938,13,3697,0,3108,4250,0]Al[3938,13,3697,0,1324,4250,0]Al[3938,13,3697,0,3978,4250,0]Al[3938,13,3697,0,1984,4250,0]Al[3938,13,3697,0,4272,4250,0]Al[3938,13,1919,0,4922,4250,0]Al[3938,13,1919,0,1337,4250,0]Ao[4725,13,4726,1952,1600,4250,0]Ao[4725,13,4726,1952,4927,4250,0]Ao[4725,13,4726,3165,4768,4250,0]Ao[4725,13,4726,1522,1583,4250,0]Ao[4725,13,4726,1522,4148,4250,0]Ao[4725,13,4726,1522,3321,4250,0]Ao[4725,13,4726,1522,3136,4250,0]Ao[4725,13,4726,1522,4822,4250,0]Ao[4725,13,4726,1522,3296,4250,0]Ao[4725,13,4726,1538,2427,4250,0]Ao[4725,13,4726,1538,3307,4250,0]Ao[4725,13,4726,1538,3138,4250,0]Ao[4725,13,4726,1538,4490,4250,0]Ao[4725,13,4726,1071,3141,4250,0]Ao[4725,13,4726,1071,4280,4250,0]Ao[4725,13,4726,1076,2011,4250,0]Ao[4725,13,4726,1076,3346,4250,0]Ao[4725,13,4726,1076,3982,4250,0]Ao[4725,13,4726,2144,4392,4250,0]Ao[4725,13,4726,2144,4114,4250,0]Ao[4725,13,4726,3703,4486,4250,0]Ao[4725,13,4726,3703,3133,4250,0]Ao[4725,13,4726,3703,4358,4250,0]Ao[4725,13,4726,3703,5010,4250,0]Ao[4725,13,4726,3283,4507,4250,0]Ao[4725,13,4726,3283,4792,4250,0]Ao[4725,13,4726,3283,4807,4250,0]Ao[4725,13,4726,3283,3984,4250,0]Ao[4725,13,4726,1838,4368,4250,0]Ao[4725,13,4726,1838,4154,4250,0]Ao[4725,13,4726,1838,4984,4250,0]Ao[4725,13,4726,1838,4106,4250,0]Ao[4725,13,4726,1838,3974,4250,0]Ao[4725,13,4726,1512,3121,4250,0]Ao[4725,13,4726,1512,3313,4250,0]Ao[4725,13,4726,1512,3335,4250,0]Ao[4725,13,4726,1512,4121,4250,0]Ao[4725,13,4726,1512,4484,4250,0]Ao[4725,13,4726,1512,4672,4250,0]Ao[4725,13,4726,1512,2385,4250,0]Ao[4725,13,4726,2437,4676,4250,0]Ao[4725,13,4726,2437,4117,4250,0]Ao[4725,13,4726,1903,4498,4250,0]Ao[4725,13,4726,1903,5013,4250,0]Ao[4725,13,4726,1903,2398,4250,0]Ao[4725,13,4726,1903,4766,4250,0]Ao[4725,13,4726,1930,4120,4250,0]Ao[4725,13,4726,1930,4125,4250,0]Al[4725,13,4726,0,4396,4250,0]Al[4725,13,4726,0,4826,4250,0]Ao[4725,13,4726,4293,3310,4250,0]Ao[4725,13,4726,4293,5106,4250,0]An[4725,13,4726,4726,482,4250,0]An[4725,13,4726,4726,118,4250,0]Ao[4725,13,4726,4726,2415,4250,0]Ao[4725,13,4726,4726,3119,4250,0]Ao[4725,13,1836,1836,4286,4250,0]Ao[4725,13,4968,4968,4867,4250,0]Ao[4725,13,4968,4968,1339,4250,0]Ao[4725,13,1920,1920,4923,4250,0]Al[4725,13,1920,0,1338,4250,0]Am[4725,13,3698,133,112,4250,0]An[4725,13,3698,133,3109,4250,0]Ao[4725,13,3698,1507,1325,4250,0]Ao[4725,13,3698,1507,3979,4250,0]Ao[4725,13,3698,2485,1985,4250,0]Ao[4725,13,3698,2485,4273,4250,0]Ao[4725,13,2115,2115,1343,4250,0]Ao[4431,13,4432,4432,2412,4250,0]Ao[4431,13,4432,4432,2425,4250,0]Ao[4431,13,4432,4432,4126,4250,0]Ao[1046,13,1047,1047,4860,4250,0]Ao[1046,13,1537,1537,4494,4250,0]Ah[3938,7,3939,2136,0,0,0]Ai[3938,13,3939,0,4367,0,0]Al[4725,13,4726,1838,4368,0,0]Ai[3938,12,1840,0,3130,0,0]Al[4725,12,1841,1841,3131,0,0]Al[4431,14,4432,4432,2412,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]10Ae[1046,7,1047,0,0,0,0]Al[3938,13,3939,2436,2391,0,0]Ae[4296,7,4297,0,0,0,0]Ae[1361,7,1362,0,0,0,0]Al[4725,13,4726,3703,3301,0,0]Al[3938,13,3939,3702,3300,0,0]1Al[4725,13,4726,2144,4392,0,0]Al[1361,13,1536,1536,1357,0,0]Al[1361,14,1536,1536,4001,0,0]Al[3938,12,3939,2136,1996,0,0]Ao[3938,13,3939,1548,4159,1996,0]Ao[3938,13,3939,1088,3996,1996,0]Ai[3938,12,1840,0,1997,0,0]Al[3938,13,1919,0,3340,1997,0]Al[4725,12,1841,1841,1998,0,0]Ao[4725,13,1920,1920,3341,1998,0]Ah[3938,5,3939,1045,0,0,0]Ai[3938,15,3939,0,3120,0,0]Ah[3938,5,3939,1512,0,0,0]Al[4725,15,4726,1512,3121,0,0]Ah[4725,5,4726,1512,0,0,0]Ai[3938,15,3939,0,4485,0,0]Al[4725,15,4726,3703,4486,0,0]Ah[4725,5,4726,2437,0,0,0]Al[4725,15,4726,3703,1342,0,0]Ai[3938,15,3939,0,4116,0,0]Al[4725,15,4726,2437,4117,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]32Al[4725,15,4726,3703,3133,0,0]><><><21Ah[3938,5,1919,1920,0,0,0]Ae[4725,5,1920,0,0,0,0]10Ah[3938,5,3939,4856,0,0,0]Ah[4725,5,4726,4856,0,0,0]Al[4725,15,2115,2115,1340,0,0]5Al[4725,15,4726,1903,4498,0,0]Ai[3938,12,3939,0,2419,0,0]Al[3938,13,3939,0,4244,2419,0]Al[3938,13,3939,0,4136,2419,0]Al[4725,12,4726,1547,2420,0,0]Ao[4725,13,4726,4516,4245,2420,0]Ao[4725,13,4726,1547,4137,2420,0]Ae[4007,7,4008,0,0,0,0]Al[3938,13,3939,3702,3300,0,0]Al[4725,13,4726,3703,3301,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]32An[1361,13,1362,1362,125,4369,0]Ao[1046,13,1047,1047,3112,4369,0]An[1046,13,1830,1830,126,4369,0]An[1046,13,1925,1925,127,4369,0]An[3958,13,3959,3959,116,4369,0]Ao[3958,13,3959,3959,2382,4369,0]Ab[4725,3,0,0,0,0,0]Ak[4431,13,4432,389,4397,0,0]Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0];:Al[3938,13,3939,2436,2391,0,0]Al[4725,13,4726,2437,2392,0,0]?>32Ae[4296,7,4297,0,0,0,0]5Al[1046,14,1047,1047,3112,0,0]60Ae[1361,7,1362,0,0,0,0]Ai[3938,13,3939,0,4152,0,0]Ai[3938,13,3939,0,4104,0,0]Al[4725,13,4726,1838,4154,0,0]Al[4725,13,4726,1838,4106,0,0]Ai[3938,14,3939,0,4152,0,0]Al[4725,14,4726,1838,4154,0,0]53Al[3938,13,3939,4079,3331,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Ai[3938,15,3939,0,4485,0,0]Al[4725,15,4726,3703,4486,0,0]Ai[3938,10,3697,3698,0,0,0]Af[4725,10,3698,0,0,0,0]Ah[3938,5,3697,3698,0,0,0]Ae[4725,5,3698,0,0,0,0]Ai[3938,10,1840,1841,0,0,0]Af[4725,10,1841,0,0,0,0]Ai[3938,15,3939,0,4116,0,0]Al[4725,15,4726,2437,4117,0,0]Ah[4725,6,4726,1903,0,0,0]Ah[3938,6,3939,3702,0,0,0]Ah[4725,6,4726,3165,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]10Al[3938,15,3939,3702,4767,0,0]Al[4725,15,4726,3165,4768,0,0]Ai[3938,14,3939,0,3137,0,0]Al[4725,14,4726,1538,3138,0,0]Ai[3938,14,3697,0,4759,0,0]Al[4725,14,3698,3698,4760,0,0]Al[3938,13,3939,3702,3300,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]10Al[4725,13,4726,3165,3115,0,0]Al[3938,13,3939,2436,2391,0,0]Al[4725,13,4726,2437,2392,0,0]Ab[4786,3,0,0,0,0,0]Ao[1046,13,1047,1047,4860,3145,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Ah[3938,5,3939,3283,0,0,0]Ah[4725,5,4726,3283,0,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]54Ai[4725,10,4726,1903,0,0,0]Al[4725,15,4726,3703,1342,0,0]7600Al[4725,15,4726,1071,4280,0,0]4365Al[4725,15,2115,2115,1340,0,0]Ae[1046,9,1047,0,0,0,0]:9Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]<;<;Ah[4725,6,4726,1522,0,0,0]21Ae[3938,5,3939,0,0,0,0]Ae[4725,5,4726,0,0,0,0]Ai[3938,15,3939,0,4116,0,0]Ah[3938,5,1840,1841,0,0,0]Al[4725,15,4726,2437,4117,0,0]Al[4725,15,4726,1903,4766,0,0]Ae[4725,5,1841,0,0,0,0]An[1361,13,1362,1362,125,4359,0]Ao[1046,13,1047,1047,3112,4359,0]An[1046,13,1830,1830,126,4359,0]An[1046,13,1925,1925,127,4359,0]An[3958,13,3959,3959,116,4359,0]Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0]Ai[3938,13,3939,0,1599,0,0]Al[4725,13,4726,1952,1600,0,0]Al[3938,14,3939,2436,4253,0,0]Ai[3938,13,3939,0,4367,0,0]Al[4725,13,4726,1838,4368,0,0]Ai[3938,13,3939,0,4244,0,0]Al[4725,13,4726,4516,4245,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]6Al[4725,13,4726,3703,3301,0,0]Al[3938,13,3939,3702,3300,0,0]0176Ao[4007,13,4008,4008,5014,4820,0]Ai[3938,13,3939,0,4499,0,0]Al[4725,13,4726,1067,4500,0,0]Ae[1046,6,1047,0,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]10Al[4725,15,4726,3703,3133,0,0]Ae[4725,5,4968,0,0,0,0]Ah[3938,5,3939,4074,0,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]Al[4725,15,2115,2115,1340,0,0]Al[3938,14,3939,2436,4253,0,0]Ak[3938,13,3939,0,481,3102,0]Ak[3938,13,3939,0,117,3102,0]Al[3938,13,3939,0,2414,3102,0]An[4725,13,4726,4726,482,3102,0]An[4725,13,4726,4726,118,3102,0]Ao[4725,13,4726,4726,2415,3102,0]Ao[3958,13,3959,3959,2382,3336,0]Ai[3938,13,3939,0,4806,0,0]Al[4725,13,4726,3283,4807,0,0]Ai[3938,12,1840,0,1997,0,0]Al[3938,13,1919,0,3340,1997,0]Al[4725,12,1841,1841,1998,0,0]Ao[4725,13,1920,1920,3341,1998,0]Al[3938,13,3939,3702,3300,0,0]Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0]Ai[3938,14,3939,0,3137,0,0]Al[4725,14,4726,1538,3138,0,0]Ai[3938,12,3697,0,3302,0,0]Ak[3938,13,3697,0,111,3302,0]Al[3938,13,3697,0,1324,3302,0]Al[3938,13,3697,0,1984,3302,0]Al[4725,12,3698,3698,3303,0,0]Am[4725,13,3698,133,112,3303,0]Ao[4725,13,3698,1507,1325,3303,0]Ao[4725,13,3698,2485,1985,3303,0]Al[3938,14,3939,2436,4253,0,0]Al[4725,13,4726,2144,2004,0,0]Ah[4725,2,4291,4078,0,0,0]Ae[1361,7,1362,0,0,0,0]==Ak[3938,13,3939,1045,474,0,0]Ak[4431,13,4432,389,4397,0,0]032Ai[3938,12,1840,0,1997,0,0]Al[3938,13,1919,0,3340,1997,0]Ae[4725,2,4726,0,0,0,0]Al[4725,12,1841,1841,1998,0,0]Ao[4725,13,1920,1920,3341,1998,0]Ai[3938,10,3939,4293,0,0,0]Ai[4725,10,4726,4293,0,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]Ai[3938,15,3939,0,4116,0,0]Al[4725,15,4726,2437,4117,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Ah[3938,5,3939,1838,0,0,0]Ah[4725,5,4726,1838,0,0,0]Ai[3938,12,1840,0,3130,0,0]Al[4725,12,1841,1841,3131,0,0]Al[4725,13,4726,2437,2392,0,0]Al[4725,13,4726,4726,3119,0,0]Al[4725,13,4726,3703,3301,0,0]Ai[3938,13,3697,0,4272,0,0]Al[4725,13,3698,2485,4273,0,0]Al[3938,13,3939,2136,3143,0,0]0Al[3938,13,3939,3702,3300,0,0]4Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0]Al[1046,14,1047,1047,3112,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Al[4725,15,2115,2115,1340,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]10Al[4725,15,4726,1522,4822,0,0]Al[4725,15,4726,3703,3133,0,0]Ah[4725,5,4726,3703,0,0,0]Ai[3938,15,3939,0,3120,0,0]Al[4725,15,4726,1512,3121,0,0]Ah[4725,5,4726,1903,0,0,0]Ae[4007,5,4008,0,0,0,0]Al[1046,13,1047,1047,3112,0,0]Al[3938,13,3939,3702,3300,0,0]Ai[3938,12,1840,0,1997,0,0]Al[3938,13,1919,0,3340,1997,0]Al[4725,12,1841,1841,1998,0,0]Ao[4725,13,1920,1920,3341,1998,0]Ah[4725,7,4902,4901,0,0,0]0Al[4725,13,4726,3703,3301,0,0]6Ak[3938,13,3939,1045,474,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]Ao[4007,13,4008,4008,5014,4820,0]0Ai[3938,13,3939,0,4104,0,0]Al[4725,13,4726,1838,4106,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]10Ai[3938,13,3939,0,4791,0,0]Al[4725,13,4726,3283,4792,0,0]Am[1361,13,1362,1362,125,456,0]An[1046,13,1047,1047,3112,456,0]Am[1046,13,1830,1830,126,456,0]Am[1046,13,1925,1925,127,456,0]Am[3958,13,3959,3959,116,456,0]??>An[1361,13,1362,1362,125,4369,0]Ao[1046,13,1047,1047,3112,4369,0]An[1046,13,1830,1830,126,4369,0]An[1046,13,1925,1925,127,4369,0]An[3958,13,3959,3959,116,4369,0]Ao[3958,13,3959,3959,2382,4369,0]Ai[3938,13,3939,0,4152,0,0]Al[4725,13,4726,1838,4154,0,0]Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]Ae[1046,5,4211,0,0,0,0]0Ai[3938,13,3939,0,4367,0,0]Al[4725,13,4726,1838,4368,0,0]Ai[3938,13,3939,0,4104,0,0]Al[4725,13,4726,1838,4106,0,0]Al[3938,13,3939,2436,2391,0,0]Al[3938,13,3939,2463,2395,0,0]Al[4725,13,4726,2437,2396,0,0]Al[4725,13,4726,3703,3301,0,0]Ao[4007,13,4008,4008,5014,4820,0];:Ah[3938,5,1840,1841,0,0,0]Ae[4725,5,1841,0,0,0,0]Ai[3938,15,1919,0,1337,0,0]Ai[4725,15,1920,0,1338,0,0]?>?>Al[3938,13,3939,3702,3300,0,0]6Ai[3938,13,3939,0,4506,0,0]Al[4725,13,4726,3283,4507,0,0]Ae[4007,7,4008,0,0,0,0]Ae[4296,7,4297,0,0,0,0]Ai[3938,14,3939,0,3306,0,0]Al[4725,14,4726,1538,3307,0,0]?=Ai[3938,19,3939,0,4825,0,0]Ai[4725,19,4726,0,4826,0,0]2=<==<>=>=>=<;<;Al[4725,14,4968,4968,4867,0,0]?>Ai[4725,18,4726,3283,0,0,0]")
\ No newline at end of file
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+++ b/pr/323/docs/search.index/entry/c07d808995d5.js
@@ -0,0 +1 @@
+rd_("Ah[3940,15,3941,0,117,0,0]Ak[4727,15,4728,4728,118,0,0]Ai[3940,15,3941,0,4126,0,0]Al[4727,15,4728,1931,4127,0,0]Al[4433,15,4434,4434,4128,0,0]Al[4727,15,1837,1837,1590,0,0]Ao[1362,13,1363,1363,3972,3133,0]Ao[3940,13,3941,3704,4769,3133,0]Ao[3940,13,3941,4076,4393,3133,0]Ao[3940,13,3941,4076,3141,3133,0]Ao[3940,13,3941,4076,3329,3133,0]Ao[3940,13,3941,4076,4392,3133,0]Ao[3940,13,3941,4081,3347,3133,0]Ao[3940,13,3941,4081,4160,3133,0]Al[3940,13,3941,0,1600,3133,0]Al[3940,13,3941,0,4928,3133,0]Al[3940,13,3941,0,1321,3133,0]Al[3940,13,3941,0,1583,3133,0]Al[3940,13,3941,0,3138,3133,0]Al[3940,13,3941,0,2011,3133,0]Al[3940,13,3941,0,4112,3133,0]Al[3940,13,3941,0,4487,3133,0]Al[3940,13,3941,0,3985,3133,0]Al[3940,13,3941,0,3975,3133,0]Al[3940,13,3941,0,3121,3133,0]Al[3940,13,3941,0,4484,3133,0]Al[3940,13,3941,0,4672,3133,0]Al[3940,13,3941,0,4118,3133,0]Al[3940,13,3941,0,4121,3133,0]Al[3940,13,3941,0,4126,3133,0]Al[3940,13,3941,0,4827,3133,0]Ak[3940,13,3941,0,482,3133,0]Ak[3940,13,3941,0,117,3133,0]Al[3940,13,3941,0,2415,3133,0]Al[3940,13,1841,0,5074,3133,0]Al[3940,13,1920,0,1338,3133,0]Ao[4727,13,4728,1953,1601,3133,0]Ao[4727,13,4728,1953,4929,3133,0]Ao[4727,13,4728,3157,1322,3133,0]Ao[4727,13,4728,3166,4770,3133,0]Ao[4727,13,4728,1523,1584,3133,0]Ao[4727,13,4728,1523,3323,3133,0]Ao[4727,13,4728,1523,3137,3133,0]Ao[4727,13,4728,1523,4824,3133,0]Ao[4727,13,4728,1523,3298,3133,0]Ao[4727,13,4728,1538,3139,3133,0]Ao[4727,13,4728,1072,3142,3133,0]Ao[4727,13,4728,1072,4282,3133,0]Ao[4727,13,4728,1077,2012,3133,0]Ao[4727,13,4728,1077,3348,3133,0]Ao[4727,13,4728,1077,3984,3133,0]Ao[4727,13,4728,2145,4002,3133,0]Ao[4727,13,4728,2145,4394,3133,0]Ao[4727,13,4728,2145,4116,3133,0]Ao[4727,13,4728,3705,4488,3133,0]Ao[4727,13,4728,3705,3134,3133,0]Ao[4727,13,4728,3705,4360,3133,0]Ao[4727,13,4728,3285,3986,3133,0]Ao[4727,13,4728,1839,3976,3133,0]Ao[4727,13,4728,1513,3122,3133,0]Ao[4727,13,4728,1513,4375,3133,0]Ao[4727,13,4728,1513,3315,3133,0]Ao[4727,13,4728,1513,3337,3133,0]Ao[4727,13,4728,1513,4123,3133,0]Ao[4727,13,4728,1513,4486,3133,0]Ao[4727,13,4728,1513,4674,3133,0]Ao[4727,13,4728,2438,4678,3133,0]Ao[4727,13,4728,2438,4119,3133,0]Ao[4727,13,4728,1904,2399,3133,0]Ao[4727,13,4728,1904,4768,3133,0]Ao[4727,13,4728,1931,4122,3133,0]Ao[4727,13,4728,1931,4127,3133,0]Al[4727,13,4728,0,4398,3133,0]Al[4727,13,4728,0,4828,3133,0]An[4727,13,4728,4728,483,3133,0]An[4727,13,4728,4728,118,3133,0]Ao[4727,13,4728,4728,2416,3133,0]Ao[4727,13,4728,4728,3120,3133,0]Ao[4727,13,1837,1837,4288,3133,0]Ao[4727,13,4970,4970,4869,3133,0]Ao[4727,13,4970,4970,1340,3133,0]Ao[4727,13,1842,1842,5075,3133,0]Al[4727,13,1921,0,1339,3133,0]Ao[4433,13,4434,4434,4128,3133,0]Ak[3940,13,3941,1046,475,0,0]Al[3940,13,3941,4076,3327,0,0]Al[3940,13,3941,4076,4870,0,0]Al[3940,13,3941,4081,3333,0,0]Ai[4727,14,3135,0,1577,0,0]Ai[4727,14,3135,0,1567,0,0]Ai[4727,14,3135,0,3100,0,0]Ai[4727,14,3135,0,4265,0,0]Ai[4727,14,3135,0,4147,0,0]Ai[4727,14,3135,0,4140,0,0]Ai[4727,14,4001,0,2409,0,0]Ai[4727,14,4001,0,2430,0,0]Ai[4727,14,4001,0,2394,0,0]Ai[4727,14,4001,0,2000,0,0]Ae[1362,7,1363,0,0,0,0]Ah[4727,14,4499,0,471,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Ag[3940,5,3699,133,0,0,0]Ag[4727,5,3700,133,0,0,0]Al[1047,15,1048,1048,4862,0,0]Ae[3960,5,3961,0,0,0,0]Ah[3940,6,3941,4728,0,0,0]Ae[4727,6,4728,0,0,0,0]Al[4727,15,1837,1837,1590,0,0]Ai[3940,19,3941,0,1600,0,0]Ai[3940,19,3941,0,1583,0,0]Al[4727,19,4728,1953,1601,0,0]Al[4727,19,4728,1523,1584,0,0]Ae[1362,5,1363,0,0,0,0]Ae[1047,5,1831,0,0,0,0]Ae[1047,5,1926,0,0,0,0]Ah[3940,15,3941,0,117,0,0]Ak[4727,15,4728,4728,118,0,0]Ak[3940,13,3941,0,1600,128,0]Ak[3940,13,3941,0,1583,128,0]Ak[3940,13,3941,0,3985,128,0]Ak[3940,13,3941,0,4121,128,0]Aj[3940,13,3941,0,482,128,0]Aj[3940,13,3941,0,117,128,0]Ak[3940,13,3941,0,2415,128,0]An[4727,13,4728,1953,1601,128,0]An[4727,13,4728,3166,4770,128,0]An[4727,13,4728,1523,1584,128,0]An[4727,13,4728,1072,3142,128,0]An[4727,13,4728,1072,4282,128,0]An[4727,13,4728,1077,3348,128,0]An[4727,13,4728,3285,3986,128,0]An[4727,13,4728,2438,4678,128,0]An[4727,13,4728,1904,4768,128,0]An[4727,13,4728,1931,4122,128,0]Am[4727,13,4728,4728,483,128,0]Am[4727,13,4728,4728,118,128,0]An[4727,13,4728,4728,2416,128,0]Ai[3940,13,3941,0,2415,0,0]Al[4727,13,4728,4728,2416,0,0]Ai[4727,14,4001,0,1578,0,0]Ai[4727,14,4001,0,3106,0,0]Ai[3940,14,3941,0,2424,0,0]Al[4727,14,4728,4728,2425,0,0]Al[4433,14,4434,4434,2413,0,0]Al[4433,14,4434,4434,2426,0,0]An[1362,13,1363,1363,125,1328,0]Ao[1362,13,1363,1363,3972,1328,0]Ao[1362,13,1537,1537,4395,1328,0]Ao[4009,13,4010,4010,5016,1328,0]Ao[3940,13,3941,3704,3300,1328,0]Ao[3940,13,3941,3704,3302,1328,0]Ao[3940,13,3941,3704,4931,1328,0]Dd[3940,13,3941,3704,4769,1972,0,\"impl-Display-for-SendDatagramError\"]Db[3940,13,3941,3704,4769,1328,0,\"impl-Debug-for-SendDatagramError\"]Ao[3940,13,3941,2437,2392,1328,0]Ao[3940,13,3941,2437,4255,1328,0]Ao[3940,13,3941,2464,2396,1328,0]Cm[3940,13,3941,2464,3330,1972,0,\"impl-Display-for-RetryError\"]Ck[3940,13,3941,2464,3330,1328,0,\"impl-Debug-for-RetryError\"]Ao[3940,13,3941,2464,4374,1328,0]An[3940,13,3941,1046,475,1328,0]Ao[3940,13,3941,4076,3327,1328,0]Ao[3940,13,3941,4076,4870,1328,0]Da[3940,13,3941,4076,4393,1972,0,\"impl-Display-for-ReadToEndError\"]Co[3940,13,3941,4076,4393,1328,0,\"impl-Debug-for-ReadToEndError\"]Cj[3940,13,3941,4076,3141,1328,0,\"impl-Debug-for-ReadError\"]Cl[3940,13,3941,4076,3141,1972,0,\"impl-Display-for-ReadError\"]Ck[3940,13,3941,4076,3329,1328,0,\"impl-Debug-for-ResetError\"]Cm[3940,13,3941,4076,3329,1972,0,\"impl-Display-for-ResetError\"]Da[3940,13,3941,4076,4392,1972,0,\"impl-Display-for-ReadExactError\"]Co[3940,13,3941,4076,4392,1328,0,\"impl-Debug-for-ReadExactError\"]Ao[3940,13,3941,1549,4161,1328,0]Ao[3940,13,3941,1089,3998,1328,0]Ao[3940,13,3941,4081,3333,1328,0]Ck[3940,13,3941,4081,3347,1328,0,\"impl-Debug-for-WriteError\"]Cm[3940,13,3941,4081,3347,1972,0,\"impl-Display-for-WriteError\"]Cm[3940,13,3941,4081,4160,1328,0,\"impl-Debug-for-StoppedError\"]Co[3940,13,3941,4081,4160,1972,0,\"impl-Display-for-StoppedError\"]Cf[3940,13,3941,0,1600,1972,0,\"impl-Display-for-VarInt\"]Cd[3940,13,3941,0,1600,1328,0,\"impl-Debug-for-VarInt\"]Dd[3940,13,3941,0,4928,1972,0,\"impl-Display-for-VarIntBoundsExceeded\"]Db[3940,13,3941,0,4928,1328,0,\"impl-Debug-for-VarIntBoundsExceeded\"]Al[3940,13,3941,0,1321,1328,0]Cd[3940,13,3941,0,1583,1328,0,\"impl-Debug-for-PathId\"]Cf[3940,13,3941,0,1583,1972,0,\"impl-Display-for-PathId\"]Al[3940,13,3941,0,2427,1328,0]Al[3940,13,3941,0,3308,1328,0]Al[3940,13,3941,0,3138,1328,0]Al[3940,13,3941,0,4491,1328,0]Al[3940,13,3941,0,2011,1328,0]Cj[3940,13,3941,0,4112,1328,0,\"impl-Debug-for-ClosedStream\"]Cl[3940,13,3941,0,4112,1972,0,\"impl-Display-for-ClosedStream\"]Cm[3940,13,3941,0,4487,1328,0,\"impl-Debug-for-ConnectionError\"]Co[3940,13,3941,0,4487,1972,0,\"impl-Display-for-ConnectionError\"]Al[3940,13,3941,0,4501,1328,0]Al[3940,13,3941,0,4508,1328,0]Al[3940,13,3941,0,4793,1328,0]Al[3940,13,3941,0,4808,1328,0]Al[3940,13,3941,0,3985,1328,0]Al[3940,13,3941,0,4369,1328,0]Al[3940,13,3941,0,4154,1328,0]Al[3940,13,3941,0,4985,1328,0]Al[3940,13,3941,0,4106,1328,0]Ci[3940,13,3941,0,3975,1328,0,\"impl-Debug-for-ConfigError\"]Ck[3940,13,3941,0,3975,1972,0,\"impl-Display-for-ConfigError\"]Ci[3940,13,3941,0,3121,1972,0,\"impl-Display-for-FrameType\"]Cg[3940,13,3941,0,3121,1328,0,\"impl-Debug-for-FrameType\"]Co[3940,13,3941,0,4484,1972,0,\"impl-Display-for-ConnectionClose\"]Cm[3940,13,3941,0,4484,1328,0,\"impl-Debug-for-ConnectionClose\"]Cn[3940,13,3941,0,4672,1328,0,\"impl-Debug-for-ApplicationClose\"]D`[3940,13,3941,0,4672,1972,0,\"impl-Display-for-ApplicationClose\"]Cj[3940,13,3941,0,4118,1328,0,\"impl-Debug-for-ConnectError\"]Cl[3940,13,3941,0,4118,1972,0,\"impl-Display-for-ConnectError\"]Cl[3940,13,3941,0,4121,1972,0,\"impl-Display-for-ConnectionId\"]Cj[3940,13,3941,0,4121,1328,0,\"impl-Debug-for-ConnectionId\"]Al[3940,13,3941,0,4126,1328,0]Db[3940,13,3941,0,4827,1972,0,\"impl-Display-for-TransportErrorCode\"]D`[3940,13,3941,0,4827,1328,0,\"impl-Debug-for-TransportErrorCode\"]Al[3940,13,3941,0,3311,1328,0]Al[3940,13,3941,0,4703,1328,0]Ak[3940,13,3941,0,482,1328,0]C`[3940,13,3941,0,117,1328,0,\"impl-Debug-for-Dir\"]Cb[3940,13,3941,0,117,1972,0,\"impl-Display-for-Dir\"]Cf[3940,13,3941,0,2415,1328,0,\"impl-Debug-for-StreamId\"]Ch[3940,13,3941,0,2415,1972,0,\"impl-Display-for-StreamId\"]Al[3940,13,3941,0,2424,1328,0]Ak[3940,13,3699,0,111,1328,0]Al[3940,13,3699,0,3109,1328,0]Al[3940,13,3699,0,1325,1328,0]Al[3940,13,3699,0,3980,1328,0]Al[3940,13,3699,0,1985,1328,0]Al[3940,13,3699,0,4274,1328,0]Al[3940,13,3699,0,4761,1328,0]Al[3940,13,1841,0,5074,1328,0]Al[3940,13,1841,0,3978,1328,0]Al[3940,13,1841,0,4831,1328,0]Dd[3940,13,1920,0,4924,1972,0,\"impl-Display-for-NoInitialCipherSuite\"]Db[3940,13,1920,0,4924,1328,0,\"impl-Debug-for-NoInitialCipherSuite\"]Cc[3940,13,1920,0,1338,1328,0,\"impl-Debug-for-Error\"]Ce[3940,13,1920,0,1338,1972,0,\"impl-Display-for-Error\"]Ao[4727,13,4728,3705,3303,1328,0]Ao[4727,13,4728,2438,2393,1328,0]Cg[4727,13,4728,1953,1601,1328,0,\"impl-Debug-for-VarInt\"]Ci[4727,13,4728,1953,1601,1972,0,\"impl-Display-for-VarInt\"]Dg[4727,13,4728,1953,4929,1972,0,\"impl-Display-for-VarIntBoundsExceeded\"]De[4727,13,4728,1953,4929,1328,0,\"impl-Debug-for-VarIntBoundsExceeded\"]Ao[4727,13,4728,3157,1322,1328,0]Dd[4727,13,4728,3166,4770,1972,0,\"impl-Display-for-SendDatagramError\"]Db[4727,13,4728,3166,4770,1328,0,\"impl-Debug-for-SendDatagramError\"]Ci[4727,13,4728,1523,1584,1972,0,\"impl-Display-for-PathId\"]Cg[4727,13,4728,1523,1584,1328,0,\"impl-Debug-for-PathId\"]Ao[4727,13,4728,1523,4150,1328,0]Ao[4727,13,4728,1523,3323,1328,0]Ao[4727,13,4728,1523,3137,1328,0]De[4727,13,4728,1523,4824,1972,0,\"impl-Display-for-SetPathStatusError\"]Dc[4727,13,4728,1523,4824,1328,0,\"impl-Debug-for-SetPathStatusError\"]Ck[4727,13,4728,1523,3298,1328,0,\"impl-Debug-for-ClosedPath\"]Cm[4727,13,4728,1523,3298,1972,0,\"impl-Display-for-ClosedPath\"]Ao[4727,13,4728,1538,2428,1328,0]Ao[4727,13,4728,1538,3309,1328,0]Ao[4727,13,4728,1538,3139,1328,0]Ao[4727,13,4728,1538,4492,1328,0]Cj[4727,13,4728,1072,3142,1328,0,\"impl-Debug-for-ReadError\"]Cl[4727,13,4728,1072,3142,1972,0,\"impl-Display-for-ReadError\"]D`[4727,13,4728,1072,4282,1972,0,\"impl-Display-for-ReadableError\"]Cn[4727,13,4728,1072,4282,1328,0,\"impl-Debug-for-ReadableError\"]Ao[4727,13,4728,1077,2012,1328,0]Cm[4727,13,4728,1077,3348,1972,0,\"impl-Display-for-WriteError\"]Ck[4727,13,4728,1077,3348,1328,0,\"impl-Debug-for-WriteError\"]Cn[4727,13,4728,1077,3984,1972,0,\"impl-Display-for-FinishError\"]Cl[4727,13,4728,1077,3984,1328,0,\"impl-Debug-for-FinishError\"]Ao[4727,13,4728,2145,4002,1328,0]Ao[4727,13,4728,2145,4394,1328,0]Co[4727,13,4728,2145,4116,1972,0,\"impl-Display-for-ClosedStream\"]Cm[4727,13,4728,2145,4116,1328,0,\"impl-Debug-for-ClosedStream\"]D`[4727,13,4728,3705,4488,1328,0,\"impl-Debug-for-ConnectionError\"]Db[4727,13,4728,3705,4488,1972,0,\"impl-Display-for-ConnectionError\"]Cj[4727,13,4728,3705,3134,1328,0,\"impl-Debug-for-PathError\"]Cl[4727,13,4728,3705,3134,1972,0,\"impl-Display-for-PathError\"]Da[4727,13,4728,3705,4360,1972,0,\"impl-Display-for-ClosePathError\"]Co[4727,13,4728,3705,4360,1328,0,\"impl-Debug-for-ClosePathError\"]Dg[4727,13,4728,3705,5012,1328,0,\"impl-Debug-for-MultipathNotNegotiated\"]Di[4727,13,4728,3705,5012,1972,0,\"impl-Display-for-MultipathNotNegotiated\"]Ao[4727,13,4728,3705,1343,1328,0]Ao[4727,13,4728,1068,4502,1328,0]Ao[4727,13,4728,3285,4509,1328,0]Ao[4727,13,4728,3285,4794,1328,0]Ao[4727,13,4728,3285,4809,1328,0]Ao[4727,13,4728,3285,3986,1328,0]Ao[4727,13,4728,1839,4370,1328,0]Ao[4727,13,4728,1839,4156,1328,0]Ao[4727,13,4728,1839,4986,1328,0]Ao[4727,13,4728,1839,4108,1328,0]Cn[4727,13,4728,1839,3976,1972,0,\"impl-Display-for-ConfigError\"]Cl[4727,13,4728,1839,3976,1328,0,\"impl-Debug-for-ConfigError\"]Cl[4727,13,4728,1513,3122,1972,0,\"impl-Display-for-FrameType\"]Cj[4727,13,4728,1513,3122,1328,0,\"impl-Debug-for-FrameType\"]Ao[4727,13,4728,1513,4375,1328,0]Ck[4727,13,4728,1513,3315,1328,0,\"impl-Debug-for-MaybeFrame\"]Cm[4727,13,4728,1513,3315,1972,0,\"impl-Display-for-MaybeFrame\"]Cm[4727,13,4728,1513,3337,1972,0,\"impl-Display-for-StreamInfo\"]Ck[4727,13,4728,1513,3337,1328,0,\"impl-Debug-for-StreamInfo\"]Co[4727,13,4728,1513,4123,1972,0,\"impl-Display-for-DatagramInfo\"]Cm[4727,13,4728,1513,4123,1328,0,\"impl-Debug-for-DatagramInfo\"]Db[4727,13,4728,1513,4486,1972,0,\"impl-Display-for-ConnectionClose\"]D`[4727,13,4728,1513,4486,1328,0,\"impl-Debug-for-ConnectionClose\"]Dc[4727,13,4728,1513,4674,1972,0,\"impl-Display-for-ApplicationClose\"]Da[4727,13,4728,1513,4674,1328,0,\"impl-Debug-for-ApplicationClose\"]Ck[4727,13,4728,1513,2386,1972,0,\"impl-Display-for-Datagram\"]Ci[4727,13,4728,1513,2386,1328,0,\"impl-Debug-for-Datagram\"]Ao[4727,13,4728,2438,4678,1328,0]Ao[4727,13,4728,2438,2397,1328,0]Co[4727,13,4728,2438,4119,1972,0,\"impl-Display-for-ConnectError\"]Cm[4727,13,4728,2438,4119,1328,0,\"impl-Debug-for-ConnectError\"]Ao[4727,13,4728,2438,3970,1328,0]Ck[4727,13,4728,2438,3331,1328,0,\"impl-Debug-for-RetryError\"]Cm[4727,13,4728,2438,3331,1972,0,\"impl-Display-for-RetryError\"]Ao[4727,13,4728,1904,4277,1328,0]Ao[4727,13,4728,1904,4500,1328,0]Ao[4727,13,4728,1904,5015,1328,0]Ao[4727,13,4728,1904,2399,1328,0]Dd[4727,13,4728,1904,4768,1972,0,\"impl-Display-for-PacketDecodeError\"]Db[4727,13,4728,1904,4768,1328,0,\"impl-Debug-for-PacketDecodeError\"]Ao[4727,13,4728,1931,4490,1328,0]Ao[4727,13,4728,1931,4254,1328,0]Cm[4727,13,4728,1931,4122,1328,0,\"impl-Debug-for-ConnectionId\"]Co[4727,13,4728,1931,4122,1972,0,\"impl-Display-for-ConnectionId\"]Ao[4727,13,4728,1931,4127,1328,0]Cc[4727,13,4728,0,4398,1328,0,\"impl-Debug-for-Error\"]Ce[4727,13,4728,0,4398,1972,0,\"impl-Display-for-Error\"]Cb[4727,13,4728,0,4828,1328,0,\"impl-Debug-for-Code\"]Cd[4727,13,4728,0,4828,1972,0,\"impl-Display-for-Code\"]Ao[4727,13,4728,4295,3312,1328,0]Ao[4727,13,4728,4295,5108,1328,0]Ao[4727,13,4728,4858,4704,1328,0]An[4727,13,4728,4728,483,1328,0]Cc[4727,13,4728,4728,118,1328,0,\"impl-Debug-for-Dir\"]Ce[4727,13,4728,4728,118,1972,0,\"impl-Display-for-Dir\"]Ci[4727,13,4728,4728,2416,1328,0,\"impl-Debug-for-StreamId\"]Ck[4727,13,4728,4728,2416,1972,0,\"impl-Display-for-StreamId\"]Ao[4727,13,4728,4728,2425,1328,0]Cj[4727,13,4728,4728,3120,1328,0,\"impl-Debug-for-FourTuple\"]Cl[4727,13,4728,4728,3120,1972,0,\"impl-Display-for-FourTuple\"]Cn[4727,13,1837,1837,4288,1328,0,\"impl-Debug-for-UnexpectedEnd\"]D`[4727,13,1837,1837,4288,1972,0,\"impl-Display-for-UnexpectedEnd\"]Ao[4727,13,4970,4970,4869,1328,0]Ch[4727,13,4970,4970,1340,1972,0,\"impl-Display-for-Error\"]Cf[4727,13,4970,4970,1340,1328,0,\"impl-Debug-for-Error\"]Ao[4727,13,1842,1842,5075,1328,0]Ao[4727,13,1842,1842,3979,1328,0]Ao[4727,13,1842,1842,4834,1328,0]Dg[4727,13,1921,1921,4925,1972,0,\"impl-Display-for-NoInitialCipherSuite\"]De[4727,13,1921,1921,4925,1328,0,\"impl-Debug-for-NoInitialCipherSuite\"]Cc[4727,13,1921,0,1339,1328,0,\"impl-Debug-for-Error\"]Ce[4727,13,1921,0,1339,1972,0,\"impl-Display-for-Error\"]Am[4727,13,3700,133,112,1328,0]An[4727,13,3700,133,3110,1328,0]Ao[4727,13,3700,1508,1326,1328,0]Ao[4727,13,3700,1508,3981,1328,0]Ao[4727,13,3700,2486,1986,1328,0]Ao[4727,13,3700,2486,4275,1328,0]Ao[4727,13,3700,3700,4762,1328,0]Ch[4727,13,2116,2116,1341,1972,0,\"impl-Display-for-Error\"]Cf[4727,13,2116,2116,1341,1328,0,\"impl-Debug-for-Error\"]Ao[4727,13,2116,2116,1344,1328,0]An[4433,13,4434,390,4399,1328,0]Ao[4433,13,4434,4434,2413,1328,0]Ao[4433,13,4434,4434,2426,1328,0]Ao[4433,13,4434,4434,4128,1328,0]Al[4727,13,4728,1523,4150,0,0]Ai[3940,14,3941,0,2427,0,0]Al[4727,14,4728,1538,2428,0,0]Al[4727,13,4728,1904,4277,0,0]Al[4727,14,4728,1904,5015,0,0]Ah[4727,14,4499,0,471,0,0]Al[4433,14,4434,4434,2413,0,0]Ai[3940,13,3941,0,4985,0,0]Al[4727,13,4728,1839,4986,0,0]8Al[1362,13,1537,1537,4395,0,0]Al[4009,13,4010,4010,5016,0,0]Ai[3940,13,3941,0,4246,0,0]Al[3940,13,3941,2437,2392,0,0]Ai[3940,13,3941,0,3324,0,0]Ai[3940,13,3941,0,4501,0,0]Ai[3940,13,3941,0,4369,0,0]Ai[3940,13,3941,0,4154,0,0]Ai[3940,13,3941,0,4106,0,0]Ai[3940,13,3941,0,4121,0,0]Ai[3940,13,3941,0,4703,0,0]Ai[3940,13,3941,0,2415,0,0]Ah[3940,13,3699,0,111,0,0]Ai[3940,13,3699,0,1325,0,0]Ai[3940,13,3699,0,1985,0,0]Al[4727,13,4728,4518,4247,0,0]Al[4727,13,4728,1068,3325,0,0]Al[4727,13,4728,2438,2393,0,0]Al[4727,13,4728,1904,5133,0,0]Al[4727,13,4728,4295,5103,0,0]Al[4727,13,4728,1068,4502,0,0]Al[4727,13,4728,1839,4370,0,0]Al[4727,13,4728,1839,4156,0,0]Al[4727,13,4728,1839,4108,0,0]Al[4727,13,4728,1904,4277,0,0]Al[4727,13,4728,1931,4122,0,0]Ai[4727,13,4728,0,4398,0,0]Al[4727,13,4728,4295,5108,0,0]Al[4727,13,4728,4858,4704,0,0]Al[4727,13,4728,4728,2416,0,0]Aj[4727,13,3700,133,112,0,0]Al[4727,13,3700,1508,1326,0,0]Al[4727,13,3700,2486,1986,0,0]Ak[4433,13,4434,390,4399,0,0]Al[1047,13,4213,4213,5060,0,0]Al[1047,13,4213,4213,5061,0,0]Aj[3940,13,3941,0,482,124,0]Am[4727,13,4728,4728,483,124,0]Ai[3940,12,3941,0,3340,0,0]Al[3940,13,3941,2137,1997,0,0]0Ao[3940,13,3941,1549,4161,1997,0]Al[3940,13,3941,0,4286,3340,0]Al[4727,12,4728,1839,3341,0,0]Ao[4727,13,4728,1839,4287,3341,0]Al[3940,13,3941,3704,3302,0,0]Ai[3940,14,3941,0,3138,0,0]Al[4727,13,4728,3705,3303,0,0]Al[4727,14,4728,1538,3139,0,0]Ae[1047,7,1831,0,0,0,0]Ae[1047,7,1926,0,0,0,0]Ae[3940,4,3941,0,0,0,0]Ai[3940,15,3941,0,4126,0,0]Al[4727,15,4728,1931,4127,0,0]Al[4433,15,4434,4434,4128,0,0]210Ah[3940,5,1841,1842,0,0,0]Ae[4727,5,1842,0,0,0,0]Al[4727,15,4728,1904,4500,0,0]Al[4727,15,4728,1513,3315,0,0]Ah[3940,5,3941,1046,0,0,0]Al[4727,15,4728,3705,1343,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Al[3940,15,3941,4076,4393,0,0]Ah[3940,6,3941,4728,0,0,0]Ae[4727,6,4728,0,0,0,0]Ai[3940,19,3941,0,1583,0,0]Al[4727,19,4728,1523,1584,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]Ai[4727,14,3135,0,4140,0,0]Al[4433,14,4434,4434,2413,0,0]Aa[492,3,0,0,0,0,0]Ai[4727,14,4728,0,4398,0,0]Ai[3940,14,3941,0,3138,0,0]Al[4727,14,4728,1538,3139,0,0]Al[4727,14,4728,1513,2386,0,0]An[3940,13,3941,3704,2406,459,0]An[3940,13,3941,2464,2396,459,0]An[3940,13,3941,4076,3327,459,0]An[3940,13,3941,4081,3333,459,0]An[4727,13,4728,1072,1563,459,0]Am[1362,13,1363,1363,125,466,0]An[1362,13,1363,1363,3972,466,0]An[1362,13,1537,1537,4003,466,0]An[1362,13,1537,1537,1358,466,0]An[1362,13,1537,1537,4395,466,0]Ak[492,13,493,493,3973,466,0]An[4009,13,4010,4010,5016,466,0]An[3940,13,3941,3704,4513,466,0]An[3940,13,3941,3704,2406,466,0]Ak[3940,13,3941,0,4246,466,0]An[3940,13,3941,1046,2407,466,0]An[3940,13,3941,1046,3112,466,0]An[3940,13,3941,1046,4670,466,0]An[3940,13,3941,3704,3300,466,0]An[3940,13,3941,3704,3302,466,0]An[3940,13,3941,3704,1988,466,0]An[3940,13,3941,3704,1576,466,0]An[3940,13,3941,3704,3102,466,0]An[3940,13,3941,3704,2380,466,0]An[3940,13,3941,3704,4146,466,0]An[3940,13,3941,3704,4151,466,0]An[3940,13,3941,3704,4931,466,0]An[3940,13,3941,3704,4769,466,0]0An[3940,13,3941,2437,2392,466,0]An[3940,13,3941,2437,4255,466,0]An[3940,13,3941,2437,1555,466,0]An[3940,13,3941,2464,2396,466,0]An[3940,13,3941,2464,3330,466,0]An[3940,13,3941,2464,4374,466,0]Am[3940,13,3941,1046,475,466,0]An[3940,13,3941,4076,3327,466,0]An[3940,13,3941,4076,4870,466,0]An[3940,13,3941,4076,4393,466,0]0Dm[3940,13,3941,4076,3141,466,0,\"impl-From%3CConnectionError%3E-for-ReadError\"]Dh[3940,13,3941,4076,3141,466,0,\"impl-From%3CResetError%3E-for-ReadError\"]An[3940,13,3941,4076,3141,466,0]An[3940,13,3941,4076,3329,466,0]0An[3940,13,3941,4076,4392,466,0]0An[3940,13,3941,1549,4161,466,0]An[3940,13,3941,1089,3998,466,0]An[3940,13,3941,4081,3333,466,0]An[3940,13,3941,4081,3347,466,0]Dn[3940,13,3941,4081,3347,466,0,\"impl-From%3CConnectionError%3E-for-WriteError\"]Dk[3940,13,3941,4081,3347,466,0,\"impl-From%3CStoppedError%3E-for-WriteError\"]Dk[3940,13,3941,4081,3347,466,0,\"impl-From%3CClosedStream%3E-for-WriteError\"]An[3940,13,3941,4081,4160,466,0]0Ak[3940,13,3941,0,3324,466,0]Ak[3940,13,3941,0,4286,466,0]Ak[3940,13,3941,0,4505,466,0]Ak[3940,13,3941,0,4138,466,0]Ak[3940,13,3941,0,4383,466,0]Dj[3940,13,3941,0,1600,466,0,\"impl-From%3CTransportErrorCode%3E-for-VarInt\"]Ak[3940,13,3941,0,1600,466,0]Ck[3940,13,3941,0,1600,466,0,\"impl-From%3Cu32%3E-for-VarInt\"]D`[3940,13,3941,0,1600,466,0,\"impl-From%3CStreamId%3E-for-VarInt\"]Cj[3940,13,3941,0,1600,466,0,\"impl-From%3Cu8%3E-for-VarInt\"]Ck[3940,13,3941,0,1600,466,0,\"impl-From%3Cu16%3E-for-VarInt\"]Ak[3940,13,3941,0,4928,466,0]Ak[3940,13,3941,0,1321,466,0]Ak[3940,13,3941,0,1583,466,0]0Ak[3940,13,3941,0,2427,466,0]Ak[3940,13,3941,0,3308,466,0]Ak[3940,13,3941,0,3138,466,0]Ak[3940,13,3941,0,4491,466,0]Ak[3940,13,3941,0,2011,466,0]Ak[3940,13,3941,0,4112,466,0]Dl[3940,13,3941,0,4487,466,0,\"impl-From%3CCloseReason%3E-for-ConnectionError\"]Do[3940,13,3941,0,4487,466,0,\"impl-From%3CTransportError%3E-for-ConnectionError\"]Df[3940,13,3941,0,4487,466,0,\"impl-From%3CClose%3E-for-ConnectionError\"]Ak[3940,13,3941,0,4487,466,0]Ak[3940,13,3941,0,4501,466,0]Ak[3940,13,3941,0,4508,466,0]Ak[3940,13,3941,0,4793,466,0]Ak[3940,13,3941,0,4808,466,0]Ak[3940,13,3941,0,3985,466,0]0Ak[3940,13,3941,0,4369,466,0]Ak[3940,13,3941,0,4154,466,0]Ak[3940,13,3941,0,4985,466,0]Ak[3940,13,3941,0,4106,466,0]Ea[3940,13,3941,0,3975,466,0,\"impl-From%3CVarIntBoundsExceeded%3E-for-ConfigError\"]Ak[3940,13,3941,0,3975,466,0]Dl[3940,13,3941,0,3975,466,0,\"impl-From%3CTryFromIntError%3E-for-ConfigError\"]Ak[3940,13,3941,0,3121,466,0]Ak[3940,13,3941,0,4484,466,0]0Ak[3940,13,3941,0,4672,466,0]Ak[3940,13,3941,0,4118,466,0]0Ak[3940,13,3941,0,4121,466,0]Ak[3940,13,3941,0,4126,466,0]Ak[3940,13,3941,0,4827,466,0]0Ak[3940,13,3941,0,3311,466,0]Ak[3940,13,3941,0,4703,466,0]Aj[3940,13,3941,0,482,466,0]Aj[3940,13,3941,0,117,466,0]Ak[3940,13,3941,0,2415,466,0]0Ak[3940,13,3941,0,2424,466,0]Aj[3940,13,3699,0,111,466,0]Ak[3940,13,3699,0,3109,466,0]Ak[3940,13,3699,0,1325,466,0]Ak[3940,13,3699,0,3980,466,0]Ak[3940,13,3699,0,1985,466,0]Ak[3940,13,3699,0,4274,466,0]Ak[3940,13,3699,0,4761,466,0]Ak[3940,13,1841,0,1980,466,0]Aj[3940,13,1841,0,469,466,0]Ak[3940,13,1841,0,5074,466,0]Ak[3940,13,1841,0,3978,466,0]0Ak[3940,13,1841,0,4831,466,0]Ak[3940,13,1920,0,3342,466,0]Ak[3940,13,1920,0,4257,466,0]Ak[3940,13,1920,0,4699,466,0]Ak[3940,13,1920,0,4701,466,0]Ak[3940,13,1920,0,4924,466,0]Ak[3940,13,1920,0,1338,466,0]E`[3940,13,1920,0,1338,466,0,\"impl-From%3CUnsupportedOperationError%3E-for-Error\"]Dg[3940,13,1920,0,1338,466,0,\"impl-From%3CInconsistentKeys%3E-for-Error\"]De[3940,13,1920,0,1338,466,0,\"impl-From%3CInvalidMessage%3E-for-Error\"]De[3940,13,1920,0,1338,466,0,\"impl-From%3CPeerMisbehaved%3E-for-Error\"]Dg[3940,13,1920,0,1338,466,0,\"impl-From%3CPeerIncompatible%3E-for-Error\"]Dg[3940,13,1920,0,1338,466,0,\"impl-From%3CCertificateError%3E-for-Error\"]Dn[3940,13,1920,0,1338,466,0,\"impl-From%3CCertRevocationListError%3E-for-Error\"]E`[3940,13,1920,0,1338,466,0,\"impl-From%3CEncryptedClientHelloError%3E-for-Error\"]Df[3940,13,1920,0,1338,466,0,\"impl-From%3CSystemTimeError%3E-for-Error\"]Df[3940,13,1920,0,1338,466,0,\"impl-From%3CGetRandomFailed%3E-for-Error\"]Da[3940,13,1920,0,1338,466,0,\"impl-From%3COtherError%3E-for-Error\"]An[4727,13,4728,4518,4247,466,0]An[4727,13,4728,3166,3116,466,0]An[4727,13,4728,1072,1563,466,0]An[4727,13,4728,2145,2005,466,0]An[4727,13,4728,2145,3328,466,0]An[4727,13,4728,2145,3334,466,0]An[4727,13,4728,3705,3303,466,0]An[4727,13,4728,1068,3325,466,0]An[4727,13,4728,1839,4287,466,0]An[4727,13,4728,2438,2393,466,0]An[4727,13,4728,2438,4253,466,0]An[4727,13,4728,1904,5133,466,0]An[4727,13,4728,4295,5103,466,0]An[4727,13,4728,1548,4506,466,0]An[4727,13,4728,1548,4139,466,0]An[4727,13,4728,1548,4384,466,0]Cm[4727,13,4728,1953,1601,466,0,\"impl-From%3Cu8%3E-for-VarInt\"]Cn[4727,13,4728,1953,1601,466,0,\"impl-From%3Cu16%3E-for-VarInt\"]Cn[4727,13,4728,1953,1601,466,0,\"impl-From%3Cu32%3E-for-VarInt\"]An[4727,13,4728,1953,1601,466,0]Dc[4727,13,4728,1953,1601,466,0,\"impl-From%3CStreamId%3E-for-VarInt\"]Co[4727,13,4728,1953,1601,466,0,\"impl-From%3CCode%3E-for-VarInt\"]An[4727,13,4728,1953,4929,466,0]An[4727,13,4728,3157,1322,466,0]An[4727,13,4728,3166,4770,466,0]An[4727,13,4728,1523,1584,466,0]0An[4727,13,4728,1523,4150,466,0]An[4727,13,4728,1523,3323,466,0]An[4727,13,4728,1523,3137,466,0]An[4727,13,4728,1523,4824,466,0]An[4727,13,4728,1523,3298,466,0]An[4727,13,4728,1538,2428,466,0]An[4727,13,4728,1538,3309,466,0]An[4727,13,4728,1538,3139,466,0]An[4727,13,4728,1538,4492,466,0]An[4727,13,4728,1072,3142,466,0]An[4727,13,4728,1072,4282,466,0]An[4727,13,4728,1077,2012,466,0]An[4727,13,4728,1077,3348,466,0]An[4727,13,4728,1077,3984,466,0]An[4727,13,4728,2145,4002,466,0]An[4727,13,4728,2145,4394,466,0]An[4727,13,4728,2145,4116,466,0]An[4727,13,4728,3705,4488,466,0]0An[4727,13,4728,3705,3134,466,0]An[4727,13,4728,3705,4360,466,0]An[4727,13,4728,3705,5012,466,0]An[4727,13,4728,3705,1343,466,0]0An[4727,13,4728,1068,4502,466,0]An[4727,13,4728,3285,4509,466,0]An[4727,13,4728,3285,4794,466,0]An[4727,13,4728,3285,4809,466,0]An[4727,13,4728,3285,3986,466,0]0An[4727,13,4728,1839,4370,466,0]An[4727,13,4728,1839,4156,466,0]An[4727,13,4728,1839,4986,466,0]An[4727,13,4728,1839,4108,466,0]Ed[4727,13,4728,1839,3976,466,0,\"impl-From%3CVarIntBoundsExceeded%3E-for-ConfigError\"]An[4727,13,4728,1839,3976,466,0]Do[4727,13,4728,1839,3976,466,0,\"impl-From%3CTryFromIntError%3E-for-ConfigError\"]An[4727,13,4728,1513,3122,466,0]An[4727,13,4728,1513,4375,466,0]An[4727,13,4728,1513,3315,466,0]An[4727,13,4728,1513,3337,466,0]An[4727,13,4728,1513,4123,466,0]An[4727,13,4728,1513,4486,466,0]0An[4727,13,4728,1513,4674,466,0]An[4727,13,4728,1513,2386,466,0]An[4727,13,4728,2438,4678,466,0]An[4727,13,4728,2438,2397,466,0]An[4727,13,4728,2438,4119,466,0]0An[4727,13,4728,2438,3970,466,0]An[4727,13,4728,2438,3331,466,0]An[4727,13,4728,1904,4277,466,0]An[4727,13,4728,1904,4500,466,0]An[4727,13,4728,1904,5015,466,0]An[4727,13,4728,1904,2399,466,0]An[4727,13,4728,1904,4768,466,0]0An[4727,13,4728,1931,4490,466,0]An[4727,13,4728,1931,4254,466,0]An[4727,13,4728,1931,4122,466,0]An[4727,13,4728,1931,4127,466,0]Ak[4727,13,4728,0,4398,466,0]0Ak[4727,13,4728,0,4828,466,0]0An[4727,13,4728,4295,3312,466,0]An[4727,13,4728,4295,5108,466,0]An[4727,13,4728,4858,4704,466,0]Am[4727,13,4728,4728,483,466,0]Am[4727,13,4728,4728,118,466,0]An[4727,13,4728,4728,2416,466,0]0An[4727,13,4728,4728,2425,466,0]An[4727,13,4728,4728,3120,466,0]An[4727,13,1837,1837,4288,466,0]An[4727,13,4970,4970,4869,466,0]An[4727,13,4970,4970,1340,466,0]0An[4727,13,1842,1842,1981,466,0]Am[4727,13,1842,1842,470,466,0]An[4727,13,1842,1842,5075,466,0]An[4727,13,1842,1842,3979,466,0]0An[4727,13,1842,1842,4834,466,0]An[4727,13,1921,1921,3343,466,0]An[4727,13,1921,1921,4258,466,0]An[4727,13,1921,1921,4700,466,0]An[4727,13,1921,1921,4702,466,0]An[4727,13,1921,1921,4925,466,0]Dg[4727,13,1921,0,1339,466,0,\"impl-From%3CCertificateError%3E-for-Error\"]Dg[4727,13,1921,0,1339,466,0,\"impl-From%3CPeerIncompatible%3E-for-Error\"]Df[4727,13,1921,0,1339,466,0,\"impl-From%3CGetRandomFailed%3E-for-Error\"]Df[4727,13,1921,0,1339,466,0,\"impl-From%3CSystemTimeError%3E-for-Error\"]E`[4727,13,1921,0,1339,466,0,\"impl-From%3CEncryptedClientHelloError%3E-for-Error\"]Dn[4727,13,1921,0,1339,466,0,\"impl-From%3CCertRevocationListError%3E-for-Error\"]E`[4727,13,1921,0,1339,466,0,\"impl-From%3CUnsupportedOperationError%3E-for-Error\"]Ak[4727,13,1921,0,1339,466,0]Dg[4727,13,1921,0,1339,466,0,\"impl-From%3CInconsistentKeys%3E-for-Error\"]De[4727,13,1921,0,1339,466,0,\"impl-From%3CInvalidMessage%3E-for-Error\"]Da[4727,13,1921,0,1339,466,0,\"impl-From%3COtherError%3E-for-Error\"]De[4727,13,1921,0,1339,466,0,\"impl-From%3CPeerMisbehaved%3E-for-Error\"]Al[4727,13,3700,133,112,466,0]Am[4727,13,3700,133,3110,466,0]An[4727,13,3700,1508,1326,466,0]An[4727,13,3700,1508,3981,466,0]An[4727,13,3700,2486,1986,466,0]An[4727,13,3700,2486,4275,466,0]An[4727,13,3700,3700,4762,466,0]An[4727,13,2116,2116,1341,466,0]An[4727,13,2116,2116,1344,466,0]An[4433,13,4434,4434,3346,466,0]0Am[4433,13,4434,390,4399,466,0]An[4433,13,4434,4434,2413,466,0]An[4433,13,4434,4434,2426,466,0]An[4433,13,4434,4434,4128,466,0]An[1047,13,1048,1048,3113,466,0]An[1047,13,1048,1048,4862,466,0]Am[1047,13,1831,1831,126,466,0]An[1047,13,1539,1539,1359,466,0]An[1047,13,1539,1539,4004,466,0]An[1047,13,1539,1539,4496,466,0]An[1047,13,4213,4213,5060,466,0]An[1047,13,4213,4213,5061,466,0]Am[1047,13,1926,1926,127,466,0]Am[3960,13,3961,3961,116,466,0]An[3960,13,3961,3961,2383,466,0]Ak[3940,13,3941,0,1600,467,0]Ak[3940,13,3941,0,1583,467,0]Ak[3940,13,3941,0,3985,467,0]Ak[3940,13,3941,0,4121,467,0]Aj[3940,13,3941,0,482,467,0]Aj[3940,13,3941,0,117,467,0]Ak[3940,13,3941,0,2415,467,0]An[4727,13,4728,1953,1601,467,0]An[4727,13,4728,3166,4770,467,0]An[4727,13,4728,1523,1584,467,0]An[4727,13,4728,1072,3142,467,0]An[4727,13,4728,1072,4282,467,0]An[4727,13,4728,1077,3348,467,0]An[4727,13,4728,3285,3986,467,0]An[4727,13,4728,2438,4678,467,0]An[4727,13,4728,1904,4768,467,0]An[4727,13,4728,1931,4122,467,0]Am[4727,13,4728,4728,483,467,0]Am[4727,13,4728,4728,118,467,0]An[4727,13,4728,4728,2416,467,0]An[4727,13,4728,4728,3120,467,0]Am[1362,13,1363,1363,125,468,0]An[1362,13,1363,1363,3972,468,0]An[1362,13,1537,1537,4003,468,0]An[1362,13,1537,1537,1358,468,0]An[1362,13,1537,1537,4395,468,0]Ak[492,13,493,493,3973,468,0]An[4009,13,4010,4010,5016,468,0]An[3940,13,3941,3704,4513,468,0]An[3940,13,3941,3704,2406,468,0]Ak[3940,13,3941,0,4246,468,0]An[3940,13,3941,1046,2407,468,0]An[3940,13,3941,1046,3112,468,0]An[3940,13,3941,1046,4670,468,0]An[3940,13,3941,3704,3300,468,0]An[3940,13,3941,3704,3302,468,0]An[3940,13,3941,3704,1988,468,0]An[3940,13,3941,3704,1576,468,0]An[3940,13,3941,3704,3102,468,0]An[3940,13,3941,3704,2380,468,0]An[3940,13,3941,3704,4146,468,0]An[3940,13,3941,3704,4151,468,0]An[3940,13,3941,3704,4931,468,0]An[3940,13,3941,3704,4769,468,0]An[3940,13,3941,2437,2392,468,0]An[3940,13,3941,2437,4255,468,0]An[3940,13,3941,2437,1555,468,0]An[3940,13,3941,2464,2396,468,0]An[3940,13,3941,2464,3330,468,0]An[3940,13,3941,2464,4374,468,0]Am[3940,13,3941,1046,475,468,0]An[3940,13,3941,4076,3327,468,0]An[3940,13,3941,4076,4870,468,0]An[3940,13,3941,4076,4393,468,0]An[3940,13,3941,4076,3141,468,0]An[3940,13,3941,4076,3329,468,0]An[3940,13,3941,4076,4392,468,0]An[3940,13,3941,1549,4161,468,0]An[3940,13,3941,1089,3998,468,0]An[3940,13,3941,4081,3333,468,0]An[3940,13,3941,4081,3347,468,0]An[3940,13,3941,4081,4160,468,0]Ak[3940,13,3941,0,3324,468,0]Ak[3940,13,3941,0,4286,468,0]Ak[3940,13,3941,0,4505,468,0]Ak[3940,13,3941,0,4138,468,0]Ak[3940,13,3941,0,4383,468,0]Ak[3940,13,3941,0,1600,468,0]Ak[3940,13,3941,0,4928,468,0]Ak[3940,13,3941,0,1321,468,0]Ak[3940,13,3941,0,1583,468,0]Ak[3940,13,3941,0,2427,468,0]Ak[3940,13,3941,0,3308,468,0]Ak[3940,13,3941,0,3138,468,0]Ak[3940,13,3941,0,4491,468,0]Ak[3940,13,3941,0,2011,468,0]Ak[3940,13,3941,0,4112,468,0]Ak[3940,13,3941,0,4487,468,0]Ak[3940,13,3941,0,4501,468,0]Ak[3940,13,3941,0,4508,468,0]Ak[3940,13,3941,0,4793,468,0]Ak[3940,13,3941,0,4808,468,0]Ak[3940,13,3941,0,3985,468,0]Ak[3940,13,3941,0,4369,468,0]Ak[3940,13,3941,0,4154,468,0]Ak[3940,13,3941,0,4985,468,0]Ak[3940,13,3941,0,4106,468,0]Ak[3940,13,3941,0,3975,468,0]Ak[3940,13,3941,0,3121,468,0]Ak[3940,13,3941,0,4484,468,0]Ak[3940,13,3941,0,4672,468,0]Ak[3940,13,3941,0,4118,468,0]Ak[3940,13,3941,0,4121,468,0]Ak[3940,13,3941,0,4126,468,0]Ak[3940,13,3941,0,4827,468,0]Ak[3940,13,3941,0,3311,468,0]Ak[3940,13,3941,0,4703,468,0]Aj[3940,13,3941,0,482,468,0]Aj[3940,13,3941,0,117,468,0]Ak[3940,13,3941,0,2415,468,0]Ak[3940,13,3941,0,2424,468,0]Aj[3940,13,3699,0,111,468,0]Ak[3940,13,3699,0,3109,468,0]Ak[3940,13,3699,0,1325,468,0]Ak[3940,13,3699,0,3980,468,0]Ak[3940,13,3699,0,1985,468,0]Ak[3940,13,3699,0,4274,468,0]Ak[3940,13,3699,0,4761,468,0]Ak[3940,13,1841,0,1980,468,0]Aj[3940,13,1841,0,469,468,0]Ak[3940,13,1841,0,5074,468,0]Ak[3940,13,1841,0,3978,468,0]Ak[3940,13,1841,0,4831,468,0]Ak[3940,13,1920,0,3342,468,0]Ak[3940,13,1920,0,4257,468,0]Ak[3940,13,1920,0,4699,468,0]Ak[3940,13,1920,0,4701,468,0]Ak[3940,13,1920,0,4924,468,0]Ak[3940,13,1920,0,1338,468,0]An[4727,13,4728,4518,4247,468,0]An[4727,13,4728,3166,3116,468,0]An[4727,13,4728,1072,1563,468,0]An[4727,13,4728,2145,2005,468,0]An[4727,13,4728,2145,3328,468,0]An[4727,13,4728,2145,3334,468,0]An[4727,13,4728,3705,3303,468,0]An[4727,13,4728,1068,3325,468,0]An[4727,13,4728,1839,4287,468,0]An[4727,13,4728,2438,2393,468,0]An[4727,13,4728,2438,4253,468,0]An[4727,13,4728,1904,5133,468,0]An[4727,13,4728,4295,5103,468,0]An[4727,13,4728,1548,4506,468,0]An[4727,13,4728,1548,4139,468,0]An[4727,13,4728,1548,4384,468,0]An[4727,13,4728,1953,1601,468,0]An[4727,13,4728,1953,4929,468,0]An[4727,13,4728,3157,1322,468,0]An[4727,13,4728,3166,4770,468,0]An[4727,13,4728,1523,1584,468,0]An[4727,13,4728,1523,4150,468,0]An[4727,13,4728,1523,3323,468,0]An[4727,13,4728,1523,3137,468,0]An[4727,13,4728,1523,4824,468,0]An[4727,13,4728,1523,3298,468,0]An[4727,13,4728,1538,2428,468,0]An[4727,13,4728,1538,3309,468,0]An[4727,13,4728,1538,3139,468,0]An[4727,13,4728,1538,4492,468,0]An[4727,13,4728,1072,3142,468,0]An[4727,13,4728,1072,4282,468,0]An[4727,13,4728,1077,2012,468,0]An[4727,13,4728,1077,3348,468,0]An[4727,13,4728,1077,3984,468,0]An[4727,13,4728,2145,4002,468,0]An[4727,13,4728,2145,4394,468,0]An[4727,13,4728,2145,4116,468,0]An[4727,13,4728,3705,4488,468,0]An[4727,13,4728,3705,3134,468,0]An[4727,13,4728,3705,4360,468,0]An[4727,13,4728,3705,5012,468,0]An[4727,13,4728,3705,1343,468,0]An[4727,13,4728,1068,4502,468,0]An[4727,13,4728,3285,4509,468,0]An[4727,13,4728,3285,4794,468,0]An[4727,13,4728,3285,4809,468,0]An[4727,13,4728,3285,3986,468,0]An[4727,13,4728,1839,4370,468,0]An[4727,13,4728,1839,4156,468,0]An[4727,13,4728,1839,4986,468,0]An[4727,13,4728,1839,4108,468,0]An[4727,13,4728,1839,3976,468,0]An[4727,13,4728,1513,3122,468,0]An[4727,13,4728,1513,4375,468,0]An[4727,13,4728,1513,3315,468,0]An[4727,13,4728,1513,3337,468,0]An[4727,13,4728,1513,4123,468,0]An[4727,13,4728,1513,4486,468,0]An[4727,13,4728,1513,4674,468,0]An[4727,13,4728,1513,2386,468,0]An[4727,13,4728,2438,4678,468,0]An[4727,13,4728,2438,2397,468,0]An[4727,13,4728,2438,4119,468,0]An[4727,13,4728,2438,3970,468,0]An[4727,13,4728,2438,3331,468,0]An[4727,13,4728,1904,4277,468,0]An[4727,13,4728,1904,4500,468,0]An[4727,13,4728,1904,5015,468,0]An[4727,13,4728,1904,2399,468,0]An[4727,13,4728,1904,4768,468,0]An[4727,13,4728,1931,4490,468,0]An[4727,13,4728,1931,4254,468,0]An[4727,13,4728,1931,4122,468,0]An[4727,13,4728,1931,4127,468,0]Ak[4727,13,4728,0,4398,468,0]Ak[4727,13,4728,0,4828,468,0]An[4727,13,4728,4295,3312,468,0]An[4727,13,4728,4295,5108,468,0]An[4727,13,4728,4858,4704,468,0]Am[4727,13,4728,4728,483,468,0]Am[4727,13,4728,4728,118,468,0]An[4727,13,4728,4728,2416,468,0]An[4727,13,4728,4728,2425,468,0]An[4727,13,4728,4728,3120,468,0]An[4727,13,1837,1837,4288,468,0]An[4727,13,4970,4970,4869,468,0]An[4727,13,4970,4970,1340,468,0]An[4727,13,1842,1842,1981,468,0]Am[4727,13,1842,1842,470,468,0]An[4727,13,1842,1842,5075,468,0]An[4727,13,1842,1842,3979,468,0]An[4727,13,1842,1842,4834,468,0]An[4727,13,1921,1921,3343,468,0]An[4727,13,1921,1921,4258,468,0]An[4727,13,1921,1921,4700,468,0]An[4727,13,1921,1921,4702,468,0]An[4727,13,1921,1921,4925,468,0]Ak[4727,13,1921,0,1339,468,0]Al[4727,13,3700,133,112,468,0]Am[4727,13,3700,133,3110,468,0]An[4727,13,3700,1508,1326,468,0]An[4727,13,3700,1508,3981,468,0]An[4727,13,3700,2486,1986,468,0]An[4727,13,3700,2486,4275,468,0]An[4727,13,3700,3700,4762,468,0]An[4727,13,2116,2116,1341,468,0]An[4727,13,2116,2116,1344,468,0]An[4433,13,4434,4434,3346,468,0]Am[4433,13,4434,390,4399,468,0]An[4433,13,4434,4434,2413,468,0]An[4433,13,4434,4434,2426,468,0]An[4433,13,4434,4434,4128,468,0]An[1047,13,1048,1048,3113,468,0]An[1047,13,1048,1048,4862,468,0]Am[1047,13,1831,1831,126,468,0]An[1047,13,1539,1539,1359,468,0]An[1047,13,1539,1539,4004,468,0]An[1047,13,1539,1539,4496,468,0]An[1047,13,4213,4213,5060,468,0]An[1047,13,4213,4213,5061,468,0]Am[1047,13,1926,1926,127,468,0]Am[3960,13,3961,3961,116,468,0]An[3960,13,3961,3961,2383,468,0]Ac[492,7,493,0,0,0,0]Ae[4009,7,4010,0,0,0,0]Ae[4298,7,4299,0,0,0,0]Ae[3960,7,3961,0,0,0,0]Ae[4788,7,4789,0,0,0,0]Al[4727,13,4728,1072,1563,0,0]Ai[3940,12,1841,0,1964,0,0]Al[4727,13,4728,2145,2005,0,0]Al[4727,12,1842,1842,1965,0,0]Al[3940,13,3941,3704,3302,0,0]Ab[1047,3,0,0,0,0,0]Ak[3940,13,3941,1046,475,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,13,4728,3705,3303,0,0]Al[4727,14,4728,1538,3309,0,0]Al[3940,12,3941,2137,3291,0,0]Ao[3940,13,3941,3704,4513,1573,0]Ao[3940,13,3941,3704,2406,1573,0]Ao[3940,13,3941,1046,2407,1573,0]Ao[3940,13,3941,1046,3112,1573,0]Ao[3940,13,3941,3704,3300,1573,0]Ao[3940,13,3941,3704,1988,1573,0]Ao[3940,13,3941,3704,1576,1573,0]Ao[3940,13,3941,3704,3102,1573,0]Ao[3940,13,3941,3704,2380,1573,0]Ao[3940,13,3941,3704,4146,1573,0]Ao[3940,13,3941,3704,4151,1573,0]Ao[3940,13,3941,2437,1555,1573,0]Ao[3940,13,3941,2464,4374,1573,0]?Al[3940,13,3941,4076,3327,0,0]Al[4727,13,4728,2145,3328,0,0]Al[4727,13,4970,4970,4869,0,0]Al[4727,13,4728,3166,3116,0,0]Ak[4433,13,4434,390,4399,0,0]Ai[3940,12,1841,0,1964,0,0]Al[4727,12,1842,1842,1965,0,0]32Ai[3940,13,3941,0,4985,0,0]Al[4727,13,4728,1839,4986,0,0]Al[3940,13,3941,3704,3302,0,0]Al[4727,13,4728,3705,3303,0,0]Ai[3940,12,1841,0,1976,0,0]Al[4727,12,1842,1842,1977,0,0]Al[1362,14,1537,1537,4395,0,0]Ai[3940,14,3941,0,2424,0,0]Al[4727,14,4728,4728,2425,0,0]Ai[4727,14,4499,0,1355,0,0]Al[3940,13,3941,4076,3327,0,0]Al[3940,13,3941,4076,4870,0,0]Al[4727,13,4728,2145,3328,0,0]Ai[3940,12,3941,0,3344,0,0]Al[3940,13,3941,0,4383,3344,0]Al[3940,13,3941,0,4703,3344,0]Al[4727,12,4728,1548,3345,0,0]Ao[4727,13,4728,1548,4384,3345,0]Ao[4727,13,4728,4858,4704,3345,0]Am[1362,13,1363,1363,125,485,0]An[1362,13,1363,1363,3972,485,0]An[1362,13,1537,1537,4003,485,0]An[1362,13,1537,1537,1358,485,0]An[1362,13,1537,1537,4395,485,0]Ak[492,13,493,493,3973,485,0]An[4009,13,4010,4010,5016,485,0]An[3940,13,3941,3704,4513,485,0]An[3940,13,3941,3704,2406,485,0]Ak[3940,13,3941,0,4246,485,0]An[3940,13,3941,1046,2407,485,0]An[3940,13,3941,1046,3112,485,0]An[3940,13,3941,1046,4670,485,0]An[3940,13,3941,3704,3300,485,0]An[3940,13,3941,3704,3302,485,0]An[3940,13,3941,3704,1988,485,0]An[3940,13,3941,3704,1576,485,0]An[3940,13,3941,3704,3102,485,0]An[3940,13,3941,3704,2380,485,0]An[3940,13,3941,3704,4146,485,0]An[3940,13,3941,3704,4151,485,0]An[3940,13,3941,3704,4931,485,0]An[3940,13,3941,3704,4769,485,0]An[3940,13,3941,2437,2392,485,0]An[3940,13,3941,2437,4255,485,0]An[3940,13,3941,2437,1555,485,0]An[3940,13,3941,2464,2396,485,0]An[3940,13,3941,2464,3330,485,0]An[3940,13,3941,2464,4374,485,0]Am[3940,13,3941,1046,475,485,0]An[3940,13,3941,4076,3327,485,0]An[3940,13,3941,4076,4870,485,0]An[3940,13,3941,4076,4393,485,0]An[3940,13,3941,4076,3141,485,0]An[3940,13,3941,4076,3329,485,0]An[3940,13,3941,4076,4392,485,0]An[3940,13,3941,1549,4161,485,0]An[3940,13,3941,1089,3998,485,0]An[3940,13,3941,4081,3333,485,0]An[3940,13,3941,4081,3347,485,0]An[3940,13,3941,4081,4160,485,0]Ak[3940,13,3941,0,3324,485,0]Ak[3940,13,3941,0,4286,485,0]Ak[3940,13,3941,0,4505,485,0]Ak[3940,13,3941,0,4138,485,0]Ak[3940,13,3941,0,4383,485,0]Ak[3940,13,3941,0,1600,485,0]Ak[3940,13,3941,0,4928,485,0]Ak[3940,13,3941,0,1321,485,0]Ak[3940,13,3941,0,1583,485,0]Ak[3940,13,3941,0,2427,485,0]Ak[3940,13,3941,0,3308,485,0]Ak[3940,13,3941,0,3138,485,0]Ak[3940,13,3941,0,4491,485,0]Ak[3940,13,3941,0,2011,485,0]Ak[3940,13,3941,0,4112,485,0]Ak[3940,13,3941,0,4487,485,0]Ak[3940,13,3941,0,4501,485,0]Ak[3940,13,3941,0,4508,485,0]Ak[3940,13,3941,0,4793,485,0]Ak[3940,13,3941,0,4808,485,0]Ak[3940,13,3941,0,3985,485,0]Ak[3940,13,3941,0,4369,485,0]Ak[3940,13,3941,0,4154,485,0]Ak[3940,13,3941,0,4985,485,0]Ak[3940,13,3941,0,4106,485,0]Ak[3940,13,3941,0,3975,485,0]Ak[3940,13,3941,0,3121,485,0]Ak[3940,13,3941,0,4484,485,0]Ak[3940,13,3941,0,4672,485,0]Ak[3940,13,3941,0,4118,485,0]Ak[3940,13,3941,0,4121,485,0]Ak[3940,13,3941,0,4126,485,0]Ak[3940,13,3941,0,4827,485,0]Ak[3940,13,3941,0,3311,485,0]Ak[3940,13,3941,0,4703,485,0]Aj[3940,13,3941,0,482,485,0]Aj[3940,13,3941,0,117,485,0]Ak[3940,13,3941,0,2415,485,0]Ak[3940,13,3941,0,2424,485,0]Aj[3940,13,3699,0,111,485,0]Ak[3940,13,3699,0,3109,485,0]Ak[3940,13,3699,0,1325,485,0]Ak[3940,13,3699,0,3980,485,0]Ak[3940,13,3699,0,1985,485,0]Ak[3940,13,3699,0,4274,485,0]Ak[3940,13,3699,0,4761,485,0]Ak[3940,13,1841,0,1980,485,0]Aj[3940,13,1841,0,469,485,0]Ak[3940,13,1841,0,5074,485,0]Ak[3940,13,1841,0,3978,485,0]Ak[3940,13,1841,0,4831,485,0]Ak[3940,13,1920,0,3342,485,0]Ak[3940,13,1920,0,4257,485,0]Ak[3940,13,1920,0,4699,485,0]Ak[3940,13,1920,0,4701,485,0]Ak[3940,13,1920,0,4924,485,0]Ak[3940,13,1920,0,1338,485,0]An[4727,13,4728,4518,4247,485,0]An[4727,13,4728,3166,3116,485,0]An[4727,13,4728,1072,1563,485,0]An[4727,13,4728,2145,2005,485,0]An[4727,13,4728,2145,3328,485,0]An[4727,13,4728,2145,3334,485,0]An[4727,13,4728,3705,3303,485,0]An[4727,13,4728,1068,3325,485,0]An[4727,13,4728,1839,4287,485,0]An[4727,13,4728,2438,2393,485,0]An[4727,13,4728,2438,4253,485,0]An[4727,13,4728,1904,5133,485,0]An[4727,13,4728,4295,5103,485,0]An[4727,13,4728,1548,4506,485,0]An[4727,13,4728,1548,4139,485,0]An[4727,13,4728,1548,4384,485,0]An[4727,13,4728,1953,1601,485,0]An[4727,13,4728,1953,4929,485,0]An[4727,13,4728,3157,1322,485,0]An[4727,13,4728,3166,4770,485,0]An[4727,13,4728,1523,1584,485,0]An[4727,13,4728,1523,4150,485,0]An[4727,13,4728,1523,3323,485,0]An[4727,13,4728,1523,3137,485,0]An[4727,13,4728,1523,4824,485,0]An[4727,13,4728,1523,3298,485,0]An[4727,13,4728,1538,2428,485,0]An[4727,13,4728,1538,3309,485,0]An[4727,13,4728,1538,3139,485,0]An[4727,13,4728,1538,4492,485,0]An[4727,13,4728,1072,3142,485,0]An[4727,13,4728,1072,4282,485,0]An[4727,13,4728,1077,2012,485,0]An[4727,13,4728,1077,3348,485,0]An[4727,13,4728,1077,3984,485,0]An[4727,13,4728,2145,4002,485,0]An[4727,13,4728,2145,4394,485,0]An[4727,13,4728,2145,4116,485,0]An[4727,13,4728,3705,4488,485,0]An[4727,13,4728,3705,3134,485,0]An[4727,13,4728,3705,4360,485,0]An[4727,13,4728,3705,5012,485,0]An[4727,13,4728,3705,1343,485,0]An[4727,13,4728,1068,4502,485,0]An[4727,13,4728,3285,4509,485,0]An[4727,13,4728,3285,4794,485,0]An[4727,13,4728,3285,4809,485,0]An[4727,13,4728,3285,3986,485,0]An[4727,13,4728,1839,4370,485,0]An[4727,13,4728,1839,4156,485,0]An[4727,13,4728,1839,4986,485,0]An[4727,13,4728,1839,4108,485,0]An[4727,13,4728,1839,3976,485,0]An[4727,13,4728,1513,3122,485,0]An[4727,13,4728,1513,4375,485,0]An[4727,13,4728,1513,3315,485,0]An[4727,13,4728,1513,3337,485,0]An[4727,13,4728,1513,4123,485,0]An[4727,13,4728,1513,4486,485,0]An[4727,13,4728,1513,4674,485,0]An[4727,13,4728,1513,2386,485,0]An[4727,13,4728,2438,4678,485,0]An[4727,13,4728,2438,2397,485,0]An[4727,13,4728,2438,4119,485,0]An[4727,13,4728,2438,3970,485,0]An[4727,13,4728,2438,3331,485,0]An[4727,13,4728,1904,4277,485,0]An[4727,13,4728,1904,4500,485,0]An[4727,13,4728,1904,5015,485,0]An[4727,13,4728,1904,2399,485,0]An[4727,13,4728,1904,4768,485,0]An[4727,13,4728,1931,4490,485,0]An[4727,13,4728,1931,4254,485,0]An[4727,13,4728,1931,4122,485,0]An[4727,13,4728,1931,4127,485,0]Ak[4727,13,4728,0,4398,485,0]Ak[4727,13,4728,0,4828,485,0]An[4727,13,4728,4295,3312,485,0]An[4727,13,4728,4295,5108,485,0]An[4727,13,4728,4858,4704,485,0]Am[4727,13,4728,4728,483,485,0]Am[4727,13,4728,4728,118,485,0]An[4727,13,4728,4728,2416,485,0]An[4727,13,4728,4728,2425,485,0]An[4727,13,4728,4728,3120,485,0]An[4727,13,1837,1837,4288,485,0]An[4727,13,4970,4970,4869,485,0]An[4727,13,4970,4970,1340,485,0]An[4727,13,1842,1842,1981,485,0]Am[4727,13,1842,1842,470,485,0]An[4727,13,1842,1842,5075,485,0]An[4727,13,1842,1842,3979,485,0]An[4727,13,1842,1842,4834,485,0]An[4727,13,1921,1921,3343,485,0]An[4727,13,1921,1921,4258,485,0]An[4727,13,1921,1921,4700,485,0]An[4727,13,1921,1921,4702,485,0]An[4727,13,1921,1921,4925,485,0]Ak[4727,13,1921,0,1339,485,0]Al[4727,13,3700,133,112,485,0]Am[4727,13,3700,133,3110,485,0]An[4727,13,3700,1508,1326,485,0]An[4727,13,3700,1508,3981,485,0]An[4727,13,3700,2486,1986,485,0]An[4727,13,3700,2486,4275,485,0]An[4727,13,3700,3700,4762,485,0]An[4727,13,2116,2116,1341,485,0]An[4727,13,2116,2116,1344,485,0]An[1047,13,1048,1048,3113,485,0]An[1047,13,1048,1048,4862,485,0]Am[1047,13,1831,1831,126,485,0]An[1047,13,1539,1539,1359,485,0]An[1047,13,1539,1539,4004,485,0]An[1047,13,1539,1539,4496,485,0]An[1047,13,4213,4213,5060,485,0]An[1047,13,4213,4213,5061,485,0]Am[1047,13,1926,1926,127,485,0]Am[3960,13,3961,3961,116,485,0]An[3960,13,3961,3961,2383,485,0]Ah[3940,5,3941,3157,0,0,0]Ah[4727,5,4728,3157,0,0,0]Ah[3940,5,3699,1508,0,0,0]Ah[4727,5,3700,1508,0,0,0]Al[1047,15,1048,1048,4862,0,0]Ah[3940,6,1920,1511,0,0,0]Ah[4727,6,1921,1511,0,0,0]Ae[4727,6,4970,0,0,0,0]Ae[4727,6,2116,0,0,0,0]Ah[4727,6,4728,3705,0,0,0]1Al[4727,15,4728,1513,3315,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]Al[3940,15,3941,4076,3141,0,0]Ai[3940,15,3941,0,4487,0,0]Al[4727,15,4728,1072,3142,0,0]Al[4727,15,4728,3705,4488,0,0]Al[4727,15,4728,1904,4500,0,0]0Ae[1362,5,1537,0,0,0,0]Ae[1047,5,1539,0,0,0,0]Ab[1362,3,0,0,0,0,0]Ai[3940,12,3699,0,4759,0,0]Al[3940,13,3699,0,3109,4759,0]Al[3940,13,3699,0,3980,4759,0]Al[3940,13,3699,0,4274,4759,0]Al[4727,12,3700,3700,4760,0,0]An[4727,13,3700,133,3110,4760,0]Ao[4727,13,3700,1508,3981,4760,0]Ao[4727,13,3700,2486,4275,4760,0]Al[1047,13,1048,1048,4862,0,0]Ai[3940,14,3941,0,1321,0,0]Ai[3940,14,3941,0,2427,0,0]Ai[3940,14,3941,0,2011,0,0]Al[4727,14,4728,3157,1322,0,0]Al[4727,14,4728,1538,2428,0,0]Al[4727,14,4728,1077,2012,0,0]Al[4727,14,4728,2438,3970,0,0]An[1362,13,1363,1363,125,1323,0]Ao[1362,13,1363,1363,3972,1323,0]Ao[3940,13,3941,3704,3302,1323,0]Ao[3940,13,3941,3704,4931,1323,0]Ao[3940,13,3941,3704,4769,1323,0]Ao[3940,13,3941,2437,2392,1323,0]Ao[3940,13,3941,2437,4255,1323,0]Ao[3940,13,3941,4076,4393,1323,0]Ao[3940,13,3941,4076,3141,1323,0]Ao[3940,13,3941,4076,3329,1323,0]Ao[3940,13,3941,4076,4392,1323,0]Ao[3940,13,3941,4081,3347,1323,0]Ao[3940,13,3941,4081,4160,1323,0]Al[3940,13,3941,0,1600,1323,0]Al[3940,13,3941,0,4928,1323,0]Al[3940,13,3941,0,1583,1323,0]Al[3940,13,3941,0,2427,1323,0]Al[3940,13,3941,0,3308,1323,0]Al[3940,13,3941,0,3138,1323,0]Al[3940,13,3941,0,4491,1323,0]Al[3940,13,3941,0,2011,1323,0]Al[3940,13,3941,0,4112,1323,0]Al[3940,13,3941,0,4487,1323,0]Al[3940,13,3941,0,4508,1323,0]Al[3940,13,3941,0,4793,1323,0]Al[3940,13,3941,0,4808,1323,0]Al[3940,13,3941,0,3985,1323,0]Al[3940,13,3941,0,4369,1323,0]Al[3940,13,3941,0,4154,1323,0]Al[3940,13,3941,0,4985,1323,0]Al[3940,13,3941,0,4106,1323,0]Al[3940,13,3941,0,3975,1323,0]Al[3940,13,3941,0,3121,1323,0]Al[3940,13,3941,0,4484,1323,0]Al[3940,13,3941,0,4672,1323,0]Al[3940,13,3941,0,4118,1323,0]Al[3940,13,3941,0,4121,1323,0]Al[3940,13,3941,0,4126,1323,0]Al[3940,13,3941,0,4827,1323,0]Al[3940,13,3941,0,3311,1323,0]Ak[3940,13,3941,0,482,1323,0]Ak[3940,13,3941,0,117,1323,0]Al[3940,13,3941,0,2415,1323,0]Ak[3940,13,3699,0,111,1323,0]Al[3940,13,3699,0,3109,1323,0]Al[3940,13,3699,0,1325,1323,0]Al[3940,13,3699,0,3980,1323,0]Al[3940,13,3699,0,1985,1323,0]Al[3940,13,3699,0,4274,1323,0]Al[3940,13,1920,0,4924,1323,0]Al[3940,13,1920,0,1338,1323,0]Ao[4727,13,4728,1953,1601,1323,0]Ao[4727,13,4728,1953,4929,1323,0]Ao[4727,13,4728,3166,4770,1323,0]Ao[4727,13,4728,1523,1584,1323,0]Ao[4727,13,4728,1523,4150,1323,0]Ao[4727,13,4728,1523,3323,1323,0]Ao[4727,13,4728,1523,3137,1323,0]Ao[4727,13,4728,1523,4824,1323,0]Ao[4727,13,4728,1523,3298,1323,0]Ao[4727,13,4728,1538,2428,1323,0]Ao[4727,13,4728,1538,3309,1323,0]Ao[4727,13,4728,1538,3139,1323,0]Ao[4727,13,4728,1538,4492,1323,0]Ao[4727,13,4728,1072,3142,1323,0]Ao[4727,13,4728,1072,4282,1323,0]Ao[4727,13,4728,1077,2012,1323,0]Ao[4727,13,4728,1077,3348,1323,0]Ao[4727,13,4728,1077,3984,1323,0]Ao[4727,13,4728,2145,4394,1323,0]Ao[4727,13,4728,2145,4116,1323,0]Ao[4727,13,4728,3705,4488,1323,0]Ao[4727,13,4728,3705,3134,1323,0]Ao[4727,13,4728,3705,4360,1323,0]Ao[4727,13,4728,3705,5012,1323,0]Ao[4727,13,4728,3285,4509,1323,0]Ao[4727,13,4728,3285,4794,1323,0]Ao[4727,13,4728,3285,4809,1323,0]Ao[4727,13,4728,3285,3986,1323,0]Ao[4727,13,4728,1839,4370,1323,0]Ao[4727,13,4728,1839,4156,1323,0]Ao[4727,13,4728,1839,4986,1323,0]Ao[4727,13,4728,1839,4108,1323,0]Ao[4727,13,4728,1839,3976,1323,0]Ao[4727,13,4728,1513,3122,1323,0]Ao[4727,13,4728,1513,3315,1323,0]Ao[4727,13,4728,1513,3337,1323,0]Ao[4727,13,4728,1513,4123,1323,0]Ao[4727,13,4728,1513,4486,1323,0]Ao[4727,13,4728,1513,4674,1323,0]Ao[4727,13,4728,1513,2386,1323,0]Ao[4727,13,4728,2438,4678,1323,0]Ao[4727,13,4728,2438,4119,1323,0]Ao[4727,13,4728,1904,4500,1323,0]Ao[4727,13,4728,1904,5015,1323,0]Ao[4727,13,4728,1904,2399,1323,0]Ao[4727,13,4728,1904,4768,1323,0]Ao[4727,13,4728,1931,4122,1323,0]Ao[4727,13,4728,1931,4127,1323,0]Al[4727,13,4728,0,4398,1323,0]Al[4727,13,4728,0,4828,1323,0]Ao[4727,13,4728,4295,3312,1323,0]Ao[4727,13,4728,4295,5108,1323,0]An[4727,13,4728,4728,483,1323,0]An[4727,13,4728,4728,118,1323,0]Ao[4727,13,4728,4728,2416,1323,0]Ao[4727,13,4728,4728,3120,1323,0]Ao[4727,13,1837,1837,4288,1323,0]Ao[4727,13,4970,4970,4869,1323,0]Ao[4727,13,4970,4970,1340,1323,0]Ao[4727,13,1921,1921,4925,1323,0]Al[4727,13,1921,0,1339,1323,0]Am[4727,13,3700,133,112,1323,0]An[4727,13,3700,133,3110,1323,0]Ao[4727,13,3700,1508,1326,1323,0]Ao[4727,13,3700,1508,3981,1323,0]Ao[4727,13,3700,2486,1986,1323,0]Ao[4727,13,3700,2486,4275,1323,0]Ao[4727,13,2116,2116,1344,1323,0]Ao[4433,13,4434,4434,2413,1323,0]Ao[4433,13,4434,4434,2426,1323,0]Ao[4433,13,4434,4434,4128,1323,0]Ao[1047,13,1048,1048,4862,1323,0]Ao[1047,13,1539,1539,4496,1323,0]Al[3940,13,3941,3704,3302,0,0]Al[3940,13,3941,2437,2392,0,0]Ak[3940,13,3941,1046,475,0,0]Al[4727,13,4728,3705,3303,0,0]Al[3940,13,3941,0,4121,1329,0]Ao[4727,13,4728,1931,4122,1329,0]Ai[4727,14,3135,0,4265,0,0]Ai[4727,14,4728,0,4398,0,0]Ai[3940,13,3941,0,2415,0,0]Al[4727,13,4728,4728,2416,0,0]Ai[3940,13,3941,0,4126,0,0]Al[4727,13,4728,1931,4127,0,0]Ai[3940,14,1841,0,1980,0,0]Al[4727,14,1842,1842,1981,0,0]Al[4727,12,4728,1904,4799,0,0]Ao[4727,13,4728,1904,5133,4799,0]=Al[4727,13,4970,4970,4869,0,0]Ah[3940,5,3941,2437,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Al[1362,15,1363,1363,3972,0,0]0Al[4727,15,4728,1523,3323,0,0]Ah[4727,5,4728,1072,0,0,0]Ah[3940,15,3941,0,482,0,0]Ak[4727,15,4728,4728,483,0,0]Al[3960,15,3961,3961,2383,0,0]Al[4727,15,4728,1523,3137,0,0]Al[4727,15,2116,2116,1341,0,0]98Ah[3940,5,3941,3704,0,0,0]2Al[4727,15,4728,2145,4002,0,0]Ah[3940,5,3941,1523,0,0,0]Ah[4727,5,4728,1523,0,0,0]Ae[4727,8,1837,0,0,0,0]987>Al[4727,15,4728,3705,1343,0,0]>Ah[3940,5,3941,1953,0,0,0]Ah[4727,5,4728,1953,0,0,0]Al[3940,13,3941,2437,2392,0,0]Al[3940,13,3941,2464,2396,0,0]Al[4727,13,4728,2145,2005,0,0]Al[4727,13,4728,2438,2393,0,0]An[1362,13,1363,1363,125,1561,0]Ao[1362,13,1363,1363,3972,1561,0]Ao[1362,13,1537,1537,4003,1561,0]Ao[1362,13,1537,1537,1358,1561,0]Ao[1362,13,1537,1537,4395,1561,0]Al[492,13,493,493,3973,1561,0]Ao[4009,13,4010,4010,5016,1561,0]Ao[3940,13,3941,3704,4513,1561,0]Ao[3940,13,3941,3704,2406,1561,0]Al[3940,13,3941,0,4246,1561,0]Ao[3940,13,3941,1046,2407,1561,0]Ao[3940,13,3941,1046,3112,1561,0]Ao[3940,13,3941,1046,4670,1561,0]Ao[3940,13,3941,3704,3300,1561,0]Ao[3940,13,3941,3704,3302,1561,0]Ao[3940,13,3941,3704,1988,1561,0]Ao[3940,13,3941,3704,1576,1561,0]Ao[3940,13,3941,3704,3102,1561,0]Ao[3940,13,3941,3704,2380,1561,0]Ao[3940,13,3941,3704,4146,1561,0]Ao[3940,13,3941,3704,4151,1561,0]Ao[3940,13,3941,3704,4931,1561,0]Ao[3940,13,3941,3704,4769,1561,0]Ao[3940,13,3941,2437,2392,1561,0]Ao[3940,13,3941,2437,4255,1561,0]Ao[3940,13,3941,2437,1555,1561,0]Ao[3940,13,3941,2464,2396,1561,0]Ao[3940,13,3941,2464,3330,1561,0]Ao[3940,13,3941,2464,4374,1561,0]An[3940,13,3941,1046,475,1561,0]Ao[3940,13,3941,4076,3327,1561,0]Ao[3940,13,3941,4076,4870,1561,0]Ao[3940,13,3941,4076,4393,1561,0]Ao[3940,13,3941,4076,3141,1561,0]Ao[3940,13,3941,4076,3329,1561,0]Ao[3940,13,3941,4076,4392,1561,0]Ao[3940,13,3941,1549,4161,1561,0]Ao[3940,13,3941,1089,3998,1561,0]Ao[3940,13,3941,4081,3333,1561,0]Ao[3940,13,3941,4081,3347,1561,0]Ao[3940,13,3941,4081,4160,1561,0]Al[3940,13,3941,0,3324,1561,0]Al[3940,13,3941,0,4286,1561,0]Al[3940,13,3941,0,4505,1561,0]Al[3940,13,3941,0,4138,1561,0]Al[3940,13,3941,0,4383,1561,0]Al[3940,13,3941,0,1600,1561,0]Al[3940,13,3941,0,4928,1561,0]Al[3940,13,3941,0,1321,1561,0]Al[3940,13,3941,0,1583,1561,0]Al[3940,13,3941,0,2427,1561,0]Al[3940,13,3941,0,3308,1561,0]Al[3940,13,3941,0,3138,1561,0]Al[3940,13,3941,0,4491,1561,0]Al[3940,13,3941,0,2011,1561,0]Al[3940,13,3941,0,4112,1561,0]Al[3940,13,3941,0,4487,1561,0]Al[3940,13,3941,0,4501,1561,0]Al[3940,13,3941,0,4508,1561,0]Al[3940,13,3941,0,4793,1561,0]Al[3940,13,3941,0,4808,1561,0]Al[3940,13,3941,0,3985,1561,0]Al[3940,13,3941,0,4369,1561,0]Al[3940,13,3941,0,4154,1561,0]Al[3940,13,3941,0,4985,1561,0]Al[3940,13,3941,0,4106,1561,0]Al[3940,13,3941,0,3975,1561,0]Al[3940,13,3941,0,3121,1561,0]Al[3940,13,3941,0,4484,1561,0]Al[3940,13,3941,0,4672,1561,0]Al[3940,13,3941,0,4118,1561,0]Al[3940,13,3941,0,4121,1561,0]Al[3940,13,3941,0,4126,1561,0]Al[3940,13,3941,0,4827,1561,0]Al[3940,13,3941,0,3311,1561,0]Al[3940,13,3941,0,4703,1561,0]Ak[3940,13,3941,0,482,1561,0]Ak[3940,13,3941,0,117,1561,0]Al[3940,13,3941,0,2415,1561,0]Al[3940,13,3941,0,2424,1561,0]Ak[3940,13,3699,0,111,1561,0]Al[3940,13,3699,0,3109,1561,0]Al[3940,13,3699,0,1325,1561,0]Al[3940,13,3699,0,3980,1561,0]Al[3940,13,3699,0,1985,1561,0]Al[3940,13,3699,0,4274,1561,0]Al[3940,13,3699,0,4761,1561,0]Al[3940,13,1841,0,1980,1561,0]Ak[3940,13,1841,0,469,1561,0]Al[3940,13,1841,0,5074,1561,0]Al[3940,13,1841,0,3978,1561,0]Al[3940,13,1841,0,4831,1561,0]Al[3940,13,1920,0,3342,1561,0]Al[3940,13,1920,0,4257,1561,0]Al[3940,13,1920,0,4699,1561,0]Al[3940,13,1920,0,4701,1561,0]Al[3940,13,1920,0,4924,1561,0]Al[3940,13,1920,0,1338,1561,0]Ao[4727,13,4728,4518,4247,1561,0]Ao[4727,13,4728,3166,3116,1561,0]Ao[4727,13,4728,1072,1563,1561,0]Ao[4727,13,4728,2145,2005,1561,0]Ao[4727,13,4728,2145,3328,1561,0]Ao[4727,13,4728,2145,3334,1561,0]Ao[4727,13,4728,3705,3303,1561,0]Ao[4727,13,4728,1068,3325,1561,0]Ao[4727,13,4728,1839,4287,1561,0]Ao[4727,13,4728,2438,2393,1561,0]Ao[4727,13,4728,2438,4253,1561,0]Ao[4727,13,4728,1904,5133,1561,0]Ao[4727,13,4728,4295,5103,1561,0]Ao[4727,13,4728,1548,4506,1561,0]Ao[4727,13,4728,1548,4139,1561,0]Ao[4727,13,4728,1548,4384,1561,0]Ao[4727,13,4728,1953,1601,1561,0]Ao[4727,13,4728,1953,4929,1561,0]Ao[4727,13,4728,3157,1322,1561,0]Ao[4727,13,4728,3166,4770,1561,0]Ao[4727,13,4728,1523,1584,1561,0]Ao[4727,13,4728,1523,4150,1561,0]Ao[4727,13,4728,1523,3323,1561,0]Ao[4727,13,4728,1523,3137,1561,0]Ao[4727,13,4728,1523,4824,1561,0]Ao[4727,13,4728,1523,3298,1561,0]Ao[4727,13,4728,1538,2428,1561,0]Ao[4727,13,4728,1538,3309,1561,0]Ao[4727,13,4728,1538,3139,1561,0]Ao[4727,13,4728,1538,4492,1561,0]Ao[4727,13,4728,1072,3142,1561,0]Ao[4727,13,4728,1072,4282,1561,0]Ao[4727,13,4728,1077,2012,1561,0]Ao[4727,13,4728,1077,3348,1561,0]Ao[4727,13,4728,1077,3984,1561,0]Ao[4727,13,4728,2145,4002,1561,0]Ao[4727,13,4728,2145,4394,1561,0]Ao[4727,13,4728,2145,4116,1561,0]Ao[4727,13,4728,3705,4488,1561,0]Ao[4727,13,4728,3705,3134,1561,0]Ao[4727,13,4728,3705,4360,1561,0]Ao[4727,13,4728,3705,5012,1561,0]Ao[4727,13,4728,3705,1343,1561,0]Ao[4727,13,4728,1068,4502,1561,0]Ao[4727,13,4728,3285,4509,1561,0]Ao[4727,13,4728,3285,4794,1561,0]Ao[4727,13,4728,3285,4809,1561,0]Ao[4727,13,4728,3285,3986,1561,0]Ao[4727,13,4728,1839,4370,1561,0]Ao[4727,13,4728,1839,4156,1561,0]Ao[4727,13,4728,1839,4986,1561,0]Ao[4727,13,4728,1839,4108,1561,0]Ao[4727,13,4728,1839,3976,1561,0]Ao[4727,13,4728,1513,3122,1561,0]Ao[4727,13,4728,1513,4375,1561,0]Ao[4727,13,4728,1513,3315,1561,0]Ao[4727,13,4728,1513,3337,1561,0]Ao[4727,13,4728,1513,4123,1561,0]Ao[4727,13,4728,1513,4486,1561,0]Ao[4727,13,4728,1513,4674,1561,0]Ao[4727,13,4728,1513,2386,1561,0]Ao[4727,13,4728,2438,4678,1561,0]Ao[4727,13,4728,2438,2397,1561,0]Ao[4727,13,4728,2438,4119,1561,0]Ao[4727,13,4728,2438,3970,1561,0]Ao[4727,13,4728,2438,3331,1561,0]Ao[4727,13,4728,1904,4277,1561,0]Ao[4727,13,4728,1904,4500,1561,0]Ao[4727,13,4728,1904,5015,1561,0]Ao[4727,13,4728,1904,2399,1561,0]Ao[4727,13,4728,1904,4768,1561,0]Ao[4727,13,4728,1931,4490,1561,0]Ao[4727,13,4728,1931,4254,1561,0]Ao[4727,13,4728,1931,4122,1561,0]Ao[4727,13,4728,1931,4127,1561,0]Al[4727,13,4728,0,4398,1561,0]Al[4727,13,4728,0,4828,1561,0]Ao[4727,13,4728,4295,3312,1561,0]Ao[4727,13,4728,4295,5108,1561,0]Ao[4727,13,4728,4858,4704,1561,0]An[4727,13,4728,4728,483,1561,0]An[4727,13,4728,4728,118,1561,0]Ao[4727,13,4728,4728,2416,1561,0]Ao[4727,13,4728,4728,2425,1561,0]Ao[4727,13,4728,4728,3120,1561,0]Ao[4727,13,1837,1837,4288,1561,0]Ao[4727,13,4970,4970,4869,1561,0]Ao[4727,13,4970,4970,1340,1561,0]Ao[4727,13,1842,1842,1981,1561,0]An[4727,13,1842,1842,470,1561,0]Ao[4727,13,1842,1842,5075,1561,0]Ao[4727,13,1842,1842,3979,1561,0]Ao[4727,13,1842,1842,4834,1561,0]Ao[4727,13,1921,1921,3343,1561,0]Ao[4727,13,1921,1921,4258,1561,0]Ao[4727,13,1921,1921,4700,1561,0]Ao[4727,13,1921,1921,4702,1561,0]Ao[4727,13,1921,1921,4925,1561,0]Al[4727,13,1921,0,1339,1561,0]Am[4727,13,3700,133,112,1561,0]An[4727,13,3700,133,3110,1561,0]Ao[4727,13,3700,1508,1326,1561,0]Ao[4727,13,3700,1508,3981,1561,0]Ao[4727,13,3700,2486,1986,1561,0]Ao[4727,13,3700,2486,4275,1561,0]Ao[4727,13,3700,3700,4762,1561,0]Ao[4727,13,2116,2116,1341,1561,0]Ao[4727,13,2116,2116,1344,1561,0]Ao[4433,13,4434,4434,3346,1561,0]An[4433,13,4434,390,4399,1561,0]Ao[4433,13,4434,4434,2413,1561,0]Ao[4433,13,4434,4434,2426,1561,0]Ao[4433,13,4434,4434,4128,1561,0]Ao[1047,13,1048,1048,3113,1561,0]Ao[1047,13,1048,1048,4862,1561,0]An[1047,13,1831,1831,126,1561,0]Ao[1047,13,1539,1539,1359,1561,0]Ao[1047,13,1539,1539,4004,1561,0]Ao[1047,13,1539,1539,4496,1561,0]Ao[1047,13,4213,4213,5060,1561,0]Ao[1047,13,4213,4213,5061,1561,0]An[1047,13,1926,1926,127,1561,0]An[3960,13,3961,3961,116,1561,0]Ao[3960,13,3961,3961,2383,1561,0]Ai[3940,14,3941,0,2011,0,0]Al[4727,14,4728,1077,2012,0,0]Ak[1362,14,1363,1363,125,0,0]Ac[492,7,493,0,0,0,0]Al[3940,13,3941,2437,2392,0,0]Ae[1047,2,1048,0,0,0,0]Ae[4788,7,4789,0,0,0,0]Al[3940,13,3941,3704,3302,0,0]Ae[4727,2,4728,0,0,0,0]Al[4727,13,4728,2438,2393,0,0]Ah[3940,2,3941,4728,0,0,0]Ai[3940,13,3941,0,4827,0,0]Ai[3940,14,3941,0,3308,0,0]Ai[3940,14,3941,0,4154,0,0]5Ai[4727,13,4728,0,4828,0,0]Al[4727,14,4728,1538,3309,0,0]Al[4727,14,4728,1839,4156,0,0]Ai[4727,14,4728,0,4398,0,0]Al[3940,13,3941,0,1600,3117,0]Al[3940,13,3941,0,1583,3117,0]Al[3940,13,3941,0,3121,3117,0]Al[3940,13,3941,0,4827,3117,0]Al[3940,13,3941,0,2415,3117,0]Ao[4727,13,4728,1953,1601,3117,0]Ao[4727,13,4728,1523,1584,3117,0]Ao[4727,13,4728,1513,3122,3117,0]Ao[4727,13,4728,1513,3315,3117,0]Al[4727,13,4728,1904,4500,0,0]Al[4727,13,4728,0,4828,3117,0]Ao[4727,13,4728,4728,2416,3117,0]Al[4727,12,1837,1837,3117,0,0]Al[4433,14,4434,4434,2413,0,0]Al[3940,13,3941,0,1600,3118,0]Al[3940,13,3941,0,1583,3118,0]Al[3940,13,3941,0,3121,3118,0]Al[3940,13,3941,0,4827,3118,0]Al[3940,13,3941,0,2415,3118,0]Ao[4727,13,4728,1953,1601,3118,0]Ao[4727,13,4728,1523,1584,3118,0]Ao[4727,13,4728,1513,3122,3118,0]Ao[4727,13,4728,1513,3315,3118,0]Ao[4727,13,4728,1513,2386,3118,0]Al[4727,13,4728,0,4828,3118,0]Ao[4727,13,4728,4728,2416,3118,0]Al[4727,12,1837,1837,3118,0,0]Al[3940,13,3941,4081,3333,0,0]Al[4727,13,4728,2145,3334,0,0]Al[1047,13,1539,1539,4004,0,0]Al[4727,13,4728,2438,2393,0,0]Ah[3940,14,1841,0,469,0,0]Ak[4727,14,1842,1842,470,0,0]Al[3940,13,3941,2464,2396,0,0]3Ai[3940,12,3941,0,3344,0,0]Al[3940,13,3941,0,4383,3344,0]Al[3940,13,3941,0,4703,3344,0]Al[4727,12,4728,1548,3345,0,0]Ao[4727,13,4728,1548,4384,3345,0]Ao[4727,13,4728,4858,4704,3345,0]Al[1047,14,1048,1048,3113,0,0]Ai[3940,14,3941,0,1321,0,0]Al[4727,14,4728,3157,1322,0,0]Ai[3940,13,3699,0,3304,0,0]Ak[3940,13,3699,0,111,3304,0]Al[3940,13,3699,0,1325,3304,0]Al[3940,13,3699,0,1985,3304,0]Al[4727,13,3700,3700,3305,0,0]Am[4727,13,3700,133,112,3305,0]Ao[4727,13,3700,1508,1326,3305,0]Ao[4727,13,3700,2486,1986,3305,0]Ah[3940,14,1841,0,469,0,0]Ak[4727,14,1842,1842,470,0,0]Ai[4727,14,4499,0,4707,0,0]Ai[3940,14,3941,0,4484,0,0]Ai[3940,14,3941,0,4672,0,0]Al[4727,14,4728,1513,4486,0,0]Al[4727,14,4728,1513,4674,0,0]Ai[4727,14,4728,0,4398,0,0]Ai[4727,14,1342,0,4362,0,0]Al[3940,13,3941,2437,2392,0,0]Al[3940,13,3941,2464,2396,0,0]Al[4727,13,4728,2438,2393,0,0]Ai[3940,14,1841,0,1980,0,0]Al[4727,14,4728,4728,3120,0,0]Al[4727,14,1842,1842,1981,0,0]Ae[3940,4,3941,0,0,0,0]Ah[3940,2,1841,1842,0,0,0]Ae[4727,4,4728,0,0,0,0]Ae[4727,2,1842,0,0,0,0]Ac[492,7,493,0,0,0,0]:Ae[1047,2,1048,0,0,0,0]Ae[4788,7,4789,0,0,0,0]Ao[3940,13,3941,3704,4769,1331,0]Ao[3940,13,3941,4076,4393,1331,0]Ao[3940,13,3941,4076,3141,1331,0]Ao[3940,13,3941,4076,3329,1331,0]Ao[3940,13,3941,4076,4392,1331,0]Ao[3940,13,3941,4081,3347,1331,0]Ao[3940,13,3941,4081,4160,1331,0]Al[3940,13,3941,0,4487,1331,0]Ao[4727,13,4728,3705,4488,1331,0]Ai[3940,14,3941,0,2424,0,0]Al[4727,14,4728,4728,2425,0,0]Al[4433,14,4434,4434,2426,0,0]Ak[3940,13,3941,1046,475,0,0]Ai[4727,14,3135,0,4147,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]Al[4433,14,4434,4434,2413,0,0]Ai[3940,14,3941,0,4491,0,0]Al[4727,14,4728,1538,4492,0,0]10Ai[3940,12,1841,0,1976,0,0]Al[4727,12,1842,1842,1977,0,0]Ai[3940,12,3699,0,3304,0,0]Ak[3940,13,3699,0,111,3304,0]Al[3940,13,3699,0,1325,3304,0]Al[3940,13,3699,0,1985,3304,0]Al[4727,12,3700,3700,3305,0,0]Am[4727,13,3700,133,112,3305,0]Ao[4727,13,3700,1508,1326,3305,0]Ao[4727,13,3700,2486,1986,3305,0]Ai[3940,10,1841,1842,0,0,0]Af[4727,10,1842,0,0,0,0]Al[4727,15,4728,3166,4770,0,0]Al[4727,15,4728,1072,3142,0,0]Al[4727,15,4728,1077,3348,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]65Al[4727,15,4728,1904,4500,0,0]Ah[3940,5,1841,1842,0,0,0]Ae[4727,5,1842,0,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Ah[3940,5,3699,2486,0,0,0]Ah[4727,5,3700,2486,0,0,0]Al[1047,15,1048,1048,4862,0,0]Ah[3940,5,3941,3704,0,0,0]5454Ai[3940,10,3941,2137,0,0,0]Ai[3940,10,1841,1842,0,0,0]Af[4727,10,1842,0,0,0,0]Al[3940,15,3941,4081,3347,0,0]?Al[4727,15,4728,1077,3984,0,0]Al[4727,15,4728,2145,4002,0,0]Ah[4727,5,4728,2145,0,0,0]Al[3940,15,3941,4076,4393,0,0]Al[4727,15,4728,1513,3315,0,0]Ah[3940,5,3941,1077,0,0,0]Ah[4727,5,4728,1077,0,0,0]Al[4727,15,4728,1904,2399,0,0]Ai[3940,12,3941,0,4976,0,0]Al[4727,12,4728,4295,4977,0,0]Ao[4727,13,4728,4295,5103,4977,0]Ao[4727,13,4728,4295,5108,4977,0]Ak[1362,14,1363,1363,125,0,0]An[1362,13,1363,1363,125,4361,0]Ao[1047,13,1048,1048,3113,4361,0]An[1047,13,1831,1831,126,4361,0]An[1047,13,1926,1926,127,4361,0]An[3960,13,3961,3961,116,4361,0]Ak[3960,14,3961,3961,116,0,0]Al[3940,13,3941,0,1600,3299,0]Al[3940,13,3941,0,1583,3299,0]Al[3940,13,3941,0,3985,3299,0]Al[3940,13,3941,0,4121,3299,0]Ak[3940,13,3941,0,482,3299,0]Ak[3940,13,3941,0,117,3299,0]Al[3940,13,3941,0,2415,3299,0]Ao[4727,13,4728,1953,1601,3299,0]Ao[4727,13,4728,3166,4770,3299,0]Ao[4727,13,4728,1523,1584,3299,0]Ao[4727,13,4728,1072,3142,3299,0]Ao[4727,13,4728,1072,4282,3299,0]Ao[4727,13,4728,1077,3348,3299,0]Ao[4727,13,4728,3285,3986,3299,0]Ao[4727,13,4728,2438,4678,3299,0]Ao[4727,13,4728,1904,4768,3299,0]Ao[4727,13,4728,1931,4122,3299,0]An[4727,13,4728,4728,483,3299,0]An[4727,13,4728,4728,118,3299,0]Ao[4727,13,4728,4728,2416,3299,0]Al[3940,13,3941,2437,2392,0,0]Al[4727,13,4728,2438,2393,0,0]Ai[3940,12,1841,0,3131,0,0]Ai[3940,12,1841,0,3124,0,0]Al[4727,12,1842,1842,3132,0,0]Al[4727,12,1842,1842,3125,0,0]Ao[1362,13,1537,1537,4003,1971,0]Ao[1362,13,1537,1537,1358,1971,0]Al[492,13,493,493,3973,1971,0]Al[3940,13,3941,0,4246,1971,0]Ao[3940,13,3941,2437,4255,1971,0]Al[3940,13,3941,0,1600,1971,0]Al[3940,13,3941,0,1583,1971,0]Al[3940,13,3941,0,2427,1971,0]Al[3940,13,3941,0,3308,1971,0]Al[3940,13,3941,0,3138,1971,0]Al[3940,13,3941,0,4491,1971,0]Al[3940,13,3941,0,2011,1971,0]Al[3940,13,3941,0,4112,1971,0]Al[3940,13,3941,0,4508,1971,0]Al[3940,13,3941,0,4793,1971,0]Al[3940,13,3941,0,4808,1971,0]Al[3940,13,3941,0,3985,1971,0]Al[3940,13,3941,0,4369,1971,0]Al[3940,13,3941,0,4985,1971,0]Al[3940,13,3941,0,4703,1971,0]Al[3940,13,3699,0,3109,1971,0]Al[3940,13,3699,0,3980,1971,0]Al[3940,13,3699,0,4274,1971,0]Al[3940,13,3699,0,4761,1971,0]Ao[4727,13,4728,4518,4247,1971,0]Ao[4727,13,4728,4295,5103,1971,0]Ao[4727,13,4728,1953,1601,1971,0]Ao[4727,13,4728,1523,1584,1971,0]Ao[4727,13,4728,1523,3323,1971,0]Ao[4727,13,4728,1523,3298,1971,0]Ao[4727,13,4728,1538,2428,1971,0]Ao[4727,13,4728,1538,3309,1971,0]Ao[4727,13,4728,1538,3139,1971,0]Ao[4727,13,4728,1538,4492,1971,0]Ao[4727,13,4728,1077,2012,1971,0]Ao[4727,13,4728,2145,4394,1971,0]Ao[4727,13,4728,2145,4116,1971,0]Ao[4727,13,4728,3285,4509,1971,0]Ao[4727,13,4728,3285,4794,1971,0]Ao[4727,13,4728,3285,4809,1971,0]Ao[4727,13,4728,3285,3986,1971,0]Ao[4727,13,4728,1839,4370,1971,0]Ao[4727,13,4728,1839,4986,1971,0]Ao[4727,13,4728,4295,5108,1971,0]Ao[4727,13,4728,4858,4704,1971,0]An[4727,13,3700,133,3110,1971,0]Ao[4727,13,3700,1508,3981,1971,0]Ao[4727,13,3700,2486,4275,1971,0]Ao[4727,13,3700,3700,4762,1971,0]Ao[4433,13,4434,4434,2413,1971,0]Ao[1047,13,1539,1539,1359,1971,0]Ao[1047,13,1539,1539,4496,1971,0]Al[4727,13,4728,1931,4254,0,0]Al[4727,13,4728,1904,4277,0,0]Al[4727,13,4728,1904,4500,0,0]Al[4727,14,4728,1904,5015,0,0]Ai[4727,14,4767,0,4829,0,0]Ah[4727,14,4499,0,471,0,0]Ai[4727,14,4499,0,1353,0,0]Ai[4727,14,4499,0,1355,0,0]Ai[4727,14,4499,0,4707,0,0]Ai[3940,12,1841,0,3131,0,0]Ai[3940,12,1841,0,3124,0,0]Al[4727,12,1842,1842,3132,0,0]Al[4727,12,1842,1842,3125,0,0]Ae[4727,2,4728,0,0,0,0]Al[3940,13,3941,4076,3327,0,0]Al[3940,13,3941,4076,4870,0,0]Ai[3940,13,3699,0,3304,0,0]Ak[3940,13,3699,0,111,3304,0]Al[3940,13,3699,0,1325,3304,0]Al[3940,13,3699,0,1985,3304,0]Al[4727,13,3700,3700,3305,0,0]Am[4727,13,3700,133,112,3305,0]Ao[4727,13,3700,1508,1326,3305,0]Ao[4727,13,3700,2486,1986,3305,0]Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0]9854Al[3940,13,3941,3704,3302,0,0]Al[3940,13,3941,1046,2407,0,0]Al[4727,14,4728,1904,5015,0,0]Ai[4727,14,4767,0,4829,0,0]Ah[4727,14,4499,0,471,0,0]Ai[4727,14,4499,0,1353,0,0]Ai[4727,14,4499,0,4707,0,0]Al[3940,13,3941,4081,3333,0,0]Al[4727,13,4728,2145,3334,0,0]Ak[1362,14,1363,1363,125,0,0]Al[1362,14,1537,1537,1358,0,0]Al[4727,13,4728,3705,3303,0,0]Ai[3940,12,1841,0,3131,0,0]Al[4727,12,1842,1842,3132,0,0]Am[1362,13,1363,1363,125,109,0]An[1362,13,1363,1363,3972,109,0]An[1362,13,1537,1537,4003,109,0]An[1362,13,1537,1537,1358,109,0]An[1362,13,1537,1537,4395,109,0]Ak[492,13,493,493,3973,109,0]An[4009,13,4010,4010,5016,109,0]An[3940,13,3941,3704,4513,109,0]An[3940,13,3941,3704,2406,109,0]Ak[3940,13,3941,0,4246,109,0]An[3940,13,3941,1046,2407,109,0]An[3940,13,3941,1046,3112,109,0]An[3940,13,3941,1046,4670,109,0]An[3940,13,3941,3704,3300,109,0]An[3940,13,3941,3704,3302,109,0]An[3940,13,3941,3704,1988,109,0]An[3940,13,3941,3704,1576,109,0]An[3940,13,3941,3704,3102,109,0]An[3940,13,3941,3704,2380,109,0]An[3940,13,3941,3704,4146,109,0]An[3940,13,3941,3704,4151,109,0]An[3940,13,3941,3704,4931,109,0]An[3940,13,3941,3704,4769,109,0]An[3940,13,3941,2437,2392,109,0]An[3940,13,3941,2437,4255,109,0]An[3940,13,3941,2437,1555,109,0]An[3940,13,3941,2464,2396,109,0]An[3940,13,3941,2464,3330,109,0]An[3940,13,3941,2464,4374,109,0]Am[3940,13,3941,1046,475,109,0]An[3940,13,3941,4076,3327,109,0]An[3940,13,3941,4076,4870,109,0]An[3940,13,3941,4076,4393,109,0]An[3940,13,3941,4076,3141,109,0]An[3940,13,3941,4076,3329,109,0]An[3940,13,3941,4076,4392,109,0]An[3940,13,3941,1549,4161,109,0]An[3940,13,3941,1089,3998,109,0]An[3940,13,3941,4081,3333,109,0]An[3940,13,3941,4081,3347,109,0]An[3940,13,3941,4081,4160,109,0]Ak[3940,13,3941,0,3324,109,0]Ak[3940,13,3941,0,4286,109,0]Ak[3940,13,3941,0,4505,109,0]Ak[3940,13,3941,0,4138,109,0]Ak[3940,13,3941,0,4383,109,0]Ak[3940,13,3941,0,1600,109,0]Ak[3940,13,3941,0,4928,109,0]Ak[3940,13,3941,0,1321,109,0]Ak[3940,13,3941,0,1583,109,0]Ak[3940,13,3941,0,2427,109,0]Ak[3940,13,3941,0,3308,109,0]Ak[3940,13,3941,0,3138,109,0]Ak[3940,13,3941,0,4491,109,0]Ak[3940,13,3941,0,2011,109,0]Ak[3940,13,3941,0,4112,109,0]Ak[3940,13,3941,0,4487,109,0]Ak[3940,13,3941,0,4501,109,0]Ak[3940,13,3941,0,4508,109,0]Ak[3940,13,3941,0,4793,109,0]Ak[3940,13,3941,0,4808,109,0]Ak[3940,13,3941,0,3985,109,0]Ak[3940,13,3941,0,4369,109,0]Ak[3940,13,3941,0,4154,109,0]Ak[3940,13,3941,0,4985,109,0]Ak[3940,13,3941,0,4106,109,0]Ak[3940,13,3941,0,3975,109,0]Ak[3940,13,3941,0,3121,109,0]Ak[3940,13,3941,0,4484,109,0]Ak[3940,13,3941,0,4672,109,0]Ak[3940,13,3941,0,4118,109,0]Ak[3940,13,3941,0,4121,109,0]Ak[3940,13,3941,0,4126,109,0]Ak[3940,13,3941,0,4827,109,0]Ak[3940,13,3941,0,3311,109,0]Ak[3940,13,3941,0,4703,109,0]Aj[3940,13,3941,0,482,109,0]Aj[3940,13,3941,0,117,109,0]Ak[3940,13,3941,0,2415,109,0]Ak[3940,13,3941,0,2424,109,0]Aj[3940,13,3699,0,111,109,0]Ak[3940,13,3699,0,3109,109,0]Ak[3940,13,3699,0,1325,109,0]Ak[3940,13,3699,0,3980,109,0]Ak[3940,13,3699,0,1985,109,0]Ak[3940,13,3699,0,4274,109,0]Ak[3940,13,3699,0,4761,109,0]Ak[3940,13,1841,0,1980,109,0]Aj[3940,13,1841,0,469,109,0]Ak[3940,13,1841,0,5074,109,0]Ak[3940,13,1841,0,3978,109,0]Ak[3940,13,1841,0,4831,109,0]Ak[3940,13,1920,0,3342,109,0]Ak[3940,13,1920,0,4257,109,0]Ak[3940,13,1920,0,4699,109,0]Ak[3940,13,1920,0,4701,109,0]Ak[3940,13,1920,0,4924,109,0]Ak[3940,13,1920,0,1338,109,0]An[4727,13,4728,4518,4247,109,0]An[4727,13,4728,3166,3116,109,0]An[4727,13,4728,1072,1563,109,0]An[4727,13,4728,2145,2005,109,0]An[4727,13,4728,2145,3328,109,0]An[4727,13,4728,2145,3334,109,0]An[4727,13,4728,3705,3303,109,0]An[4727,13,4728,1068,3325,109,0]An[4727,13,4728,1839,4287,109,0]An[4727,13,4728,2438,2393,109,0]An[4727,13,4728,2438,4253,109,0]An[4727,13,4728,1904,5133,109,0]An[4727,13,4728,4295,5103,109,0]An[4727,13,4728,1548,4506,109,0]An[4727,13,4728,1548,4139,109,0]An[4727,13,4728,1548,4384,109,0]An[4727,13,4728,1953,1601,109,0]An[4727,13,4728,1953,4929,109,0]An[4727,13,4728,3157,1322,109,0]An[4727,13,4728,3166,4770,109,0]An[4727,13,4728,1523,1584,109,0]An[4727,13,4728,1523,4150,109,0]An[4727,13,4728,1523,3323,109,0]An[4727,13,4728,1523,3137,109,0]An[4727,13,4728,1523,4824,109,0]An[4727,13,4728,1523,3298,109,0]An[4727,13,4728,1538,2428,109,0]An[4727,13,4728,1538,3309,109,0]An[4727,13,4728,1538,3139,109,0]An[4727,13,4728,1538,4492,109,0]An[4727,13,4728,1072,3142,109,0]An[4727,13,4728,1072,4282,109,0]An[4727,13,4728,1077,2012,109,0]An[4727,13,4728,1077,3348,109,0]An[4727,13,4728,1077,3984,109,0]An[4727,13,4728,2145,4002,109,0]An[4727,13,4728,2145,4394,109,0]An[4727,13,4728,2145,4116,109,0]An[4727,13,4728,3705,4488,109,0]An[4727,13,4728,3705,3134,109,0]An[4727,13,4728,3705,4360,109,0]An[4727,13,4728,3705,5012,109,0]An[4727,13,4728,3705,1343,109,0]An[4727,13,4728,1068,4502,109,0]An[4727,13,4728,3285,4509,109,0]An[4727,13,4728,3285,4794,109,0]An[4727,13,4728,3285,4809,109,0]An[4727,13,4728,3285,3986,109,0]An[4727,13,4728,1839,4370,109,0]An[4727,13,4728,1839,4156,109,0]An[4727,13,4728,1839,4986,109,0]An[4727,13,4728,1839,4108,109,0]An[4727,13,4728,1839,3976,109,0]An[4727,13,4728,1513,3122,109,0]An[4727,13,4728,1513,4375,109,0]An[4727,13,4728,1513,3315,109,0]An[4727,13,4728,1513,3337,109,0]An[4727,13,4728,1513,4123,109,0]An[4727,13,4728,1513,4486,109,0]An[4727,13,4728,1513,4674,109,0]An[4727,13,4728,1513,2386,109,0]An[4727,13,4728,2438,4678,109,0]An[4727,13,4728,2438,2397,109,0]An[4727,13,4728,2438,4119,109,0]An[4727,13,4728,2438,3970,109,0]An[4727,13,4728,2438,3331,109,0]An[4727,13,4728,1904,4277,109,0]An[4727,13,4728,1904,4500,109,0]An[4727,13,4728,1904,5015,109,0]An[4727,13,4728,1904,2399,109,0]An[4727,13,4728,1904,4768,109,0]An[4727,13,4728,1931,4490,109,0]An[4727,13,4728,1931,4254,109,0]An[4727,13,4728,1931,4122,109,0]An[4727,13,4728,1931,4127,109,0]Ak[4727,13,4728,0,4398,109,0]Ak[4727,13,4728,0,4828,109,0]An[4727,13,4728,4295,3312,109,0]An[4727,13,4728,4295,5108,109,0]An[4727,13,4728,4858,4704,109,0]Am[4727,13,4728,4728,483,109,0]Am[4727,13,4728,4728,118,109,0]An[4727,13,4728,4728,2416,109,0]An[4727,13,4728,4728,2425,109,0]An[4727,13,4728,4728,3120,109,0]An[4727,13,1837,1837,4288,109,0]An[4727,13,4970,4970,4869,109,0]An[4727,13,4970,4970,1340,109,0]An[4727,13,1842,1842,1981,109,0]Am[4727,13,1842,1842,470,109,0]An[4727,13,1842,1842,5075,109,0]An[4727,13,1842,1842,3979,109,0]An[4727,13,1842,1842,4834,109,0]An[4727,13,1921,1921,3343,109,0]An[4727,13,1921,1921,4258,109,0]An[4727,13,1921,1921,4700,109,0]An[4727,13,1921,1921,4702,109,0]An[4727,13,1921,1921,4925,109,0]Ak[4727,13,1921,0,1339,109,0]Al[4727,13,3700,133,112,109,0]Am[4727,13,3700,133,3110,109,0]An[4727,13,3700,1508,1326,109,0]An[4727,13,3700,1508,3981,109,0]An[4727,13,3700,2486,1986,109,0]An[4727,13,3700,2486,4275,109,0]An[4727,13,3700,3700,4762,109,0]An[4727,13,2116,2116,1341,109,0]An[4727,13,2116,2116,1344,109,0]An[4433,13,4434,4434,3346,109,0]Am[4433,13,4434,390,4399,109,0]An[4433,13,4434,4434,2413,109,0]An[4433,13,4434,4434,2426,109,0]An[4433,13,4434,4434,4128,109,0]An[1047,13,1048,1048,3113,109,0]An[1047,13,1048,1048,4862,109,0]Am[1047,13,1831,1831,126,109,0]An[1047,13,1539,1539,1359,109,0]An[1047,13,1539,1539,4004,109,0]An[1047,13,1539,1539,4496,109,0]An[1047,13,4213,4213,5060,109,0]An[1047,13,4213,4213,5061,109,0]Am[1047,13,1926,1926,127,109,0]Am[3960,13,3961,3961,116,109,0]An[3960,13,3961,3961,2383,109,0]Al[3940,13,3941,3704,4931,0,0]Ai[3940,13,3941,0,4106,0,0]Al[4727,13,4728,1839,4108,0,0]Al[4727,14,4728,1904,5015,0,0]Ai[4727,14,4767,0,4829,0,0]Ah[4727,14,4499,0,471,0,0]Ai[4727,14,4499,0,1353,0,0]Ah[3940,5,3941,3704,0,0,0]Al[1362,15,1363,1363,3972,0,0]Ae[3960,6,3961,0,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Ah[4727,5,4728,1513,0,0,0]Al[3940,15,3941,3704,4769,0,0]Al[4727,15,4728,3166,4770,0,0]Ah[3940,5,3941,2437,0,0,0]Ah[4727,5,4728,2438,0,0,0]Al[4727,15,4728,2145,4002,0,0]Ah[3940,5,3941,2464,0,0,0]2Ah[4727,6,4728,1904,0,0,0]Ai[3940,19,3941,0,1600,0,0]Al[4727,19,4728,1953,1601,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]=Ai[3940,12,1841,0,4155,0,0]>Al[3940,13,1920,0,4701,4155,0]>Al[4727,12,1842,1842,4157,0,0]>Ao[4727,13,1921,1921,4702,4157,0]Ao[1047,13,4213,4213,5061,4157,0]An[3960,13,3961,3961,116,3987,0]Ao[3960,13,3961,3961,2383,3987,0]Ai[3940,14,3941,0,3138,0,0]Al[4727,14,4728,1538,3139,0,0]Ai[3940,13,3941,0,4154,0,0]Al[4727,13,4728,1839,4156,0,0]Al[3940,13,3941,2137,4357,0,0]0>=Al[1047,13,1539,1539,4496,0,0]Ae[1047,2,1048,0,0,0,0]Al[3940,13,3941,2464,2396,0,0]Al[4727,13,4728,2438,2397,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]Al[4727,13,4728,3705,3303,0,0]Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0]43Ai[3940,14,3941,0,2424,0,0]Al[4727,14,4728,4728,2425,0,0]Al[4433,14,4434,4434,2426,0,0]Al[4727,13,4728,2145,2005,0,0]Ai[3940,14,3941,0,3138,0,0]Al[4727,14,4728,1538,3139,0,0]Al[4727,13,4728,4295,5103,0,0]Al[4727,13,4728,4295,5108,0,0]Al[3940,13,3941,4081,3333,0,0]Al[4727,13,4728,2145,3334,0,0]>=Al[1362,14,1537,1537,1358,0,0]Ai[492,14,493,493,3973,0,0]Ai[3940,13,1920,0,4699,0,0]Ai[3940,13,1920,0,4701,0,0]Al[4727,13,1921,1921,4700,0,0]Al[4727,13,1921,1921,4702,0,0]76Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]Ah[3940,5,3941,4518,0,0,0]Ah[4727,5,4728,4518,0,0,0]Ai[3940,15,3941,0,4487,0,0]Ai[3940,15,3941,0,4118,0,0]Al[4727,15,4728,3705,4488,0,0]Al[4727,15,4728,2438,4119,0,0]Ah[4727,6,4728,2438,0,0,0]Ah[4727,5,4728,1931,0,0,0]Ah[3940,5,3941,2437,0,0,0]Al[3940,15,3941,4076,4392,0,0]Ah[3940,5,1920,1921,0,0,0]Ae[4727,5,1921,0,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Al[4727,15,4728,1904,4768,0,0]>Al[4727,15,4728,1523,3137,0,0]=5454Al[4727,15,4728,2438,4253,0,0]Ah[3940,5,3699,2486,0,0,0]Ah[4727,5,3700,2486,0,0,0]Ah[4727,5,4728,1904,0,0,0]98Ah[4727,6,4728,1072,0,0,0]:9Ah[3940,5,3941,1839,0,0,0]Ah[4727,5,4728,1839,0,0,0]Ae[4727,5,1837,0,0,0,0]Al[4727,13,4728,3705,3303,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]Al[1047,14,1048,1048,3113,0,0]Ae[4727,2,4728,0,0,0,0]Ai[3940,13,3941,0,4369,0,0]Al[4727,13,4728,1839,4370,0,0]Al[3940,12,3941,2137,4357,0,0]Ab[4298,3,0,0,0,0,0]Ak[1362,14,1363,1363,125,0,0]Al[1362,14,1537,1537,4003,0,0]98Al[3940,13,3941,2464,3330,0,0]Al[4727,13,4728,2438,3331,0,0]Ai[3940,13,3941,0,4793,0,0]Al[4727,13,4728,3285,4794,0,0];=Al[3940,13,3941,4076,4870,0,0]Al[4727,13,4728,2145,3328,0,0]Al[3940,13,3941,3704,3300,0,0]Al[3940,13,3941,3704,3302,0,0]Al[3940,13,3941,2464,2396,0,0]Ak[3940,13,3941,1046,475,0,0]Al[4727,13,4728,2438,2397,0,0]<;Ai[3940,13,3941,0,1600,0,0]Ai[3940,13,3941,0,1583,0,0]Al[4727,13,4728,1953,1601,0,0]Al[4727,13,4728,1523,1584,0,0]20Ae[1362,7,1537,0,0,0,0]?>Al[1362,14,1537,1537,1358,0,0]Ao[1047,13,1048,1048,4862,3146,0]Ai[3940,15,3941,0,3121,0,0]Ah[3940,5,3941,1513,0,0,0]Al[4727,15,4728,1513,3122,0,0]Ah[4727,5,4728,1513,0,0,0]Ah[3940,6,3941,3705,0,0,0]Ah[4727,6,4728,3705,0,0,0]Al[4727,15,4728,2438,4253,0,0]Ah[4727,5,4728,1931,0,0,0]Ah[3940,5,3941,1538,0,0,0]Ah[4727,5,4728,1538,0,0,0]97Ae[1047,5,1539,0,0,0,0]:8Ah[4727,6,4728,1904,0,0,0]Ah[3940,5,3941,1068,0,0,0]Ah[4727,5,4728,1068,0,0,0]Ah[3940,5,3941,1548,0,0,0]Ah[4727,5,4728,1548,0,0,0]Ah[3940,5,3941,3285,0,0,0]Ah[4727,5,4728,3285,0,0,0]Ai[3940,15,3941,0,4487,0,0]Al[4727,15,4728,3705,4488,0,0]Ah[3940,5,3941,3704,0,0,0]Al[3940,15,3941,4076,3141,0,0]Al[3940,15,3941,4076,3329,0,0]Al[3940,15,3941,4081,3347,0,0]Al[3940,15,3941,4081,4160,0,0]An[1362,13,1363,1363,125,4252,0]Ao[1362,13,1363,1363,3972,4252,0]Ao[3940,13,3941,3704,3302,4252,0]Ao[3940,13,3941,3704,4931,4252,0]Ao[3940,13,3941,3704,4769,4252,0]Ao[3940,13,3941,2437,2392,4252,0]Ao[3940,13,3941,2437,4255,4252,0]Ao[3940,13,3941,4076,4393,4252,0]Ao[3940,13,3941,4076,3141,4252,0]Ao[3940,13,3941,4076,3329,4252,0]Ao[3940,13,3941,4076,4392,4252,0]Ao[3940,13,3941,4081,3347,4252,0]Ao[3940,13,3941,4081,4160,4252,0]Al[3940,13,3941,0,1600,4252,0]Al[3940,13,3941,0,4928,4252,0]Al[3940,13,3941,0,1583,4252,0]Al[3940,13,3941,0,2427,4252,0]Al[3940,13,3941,0,3308,4252,0]Al[3940,13,3941,0,3138,4252,0]Al[3940,13,3941,0,4491,4252,0]Al[3940,13,3941,0,2011,4252,0]Al[3940,13,3941,0,4112,4252,0]Al[3940,13,3941,0,4487,4252,0]Al[3940,13,3941,0,4508,4252,0]Al[3940,13,3941,0,4793,4252,0]Al[3940,13,3941,0,4808,4252,0]Al[3940,13,3941,0,3985,4252,0]Al[3940,13,3941,0,4369,4252,0]Al[3940,13,3941,0,4154,4252,0]Al[3940,13,3941,0,4985,4252,0]Al[3940,13,3941,0,4106,4252,0]Al[3940,13,3941,0,3975,4252,0]Al[3940,13,3941,0,3121,4252,0]Al[3940,13,3941,0,4484,4252,0]Al[3940,13,3941,0,4672,4252,0]Al[3940,13,3941,0,4118,4252,0]Al[3940,13,3941,0,4121,4252,0]Al[3940,13,3941,0,4126,4252,0]Al[3940,13,3941,0,4827,4252,0]Al[3940,13,3941,0,3311,4252,0]Ak[3940,13,3941,0,482,4252,0]Ak[3940,13,3941,0,117,4252,0]Al[3940,13,3941,0,2415,4252,0]Ak[3940,13,3699,0,111,4252,0]Al[3940,13,3699,0,3109,4252,0]Al[3940,13,3699,0,1325,4252,0]Al[3940,13,3699,0,3980,4252,0]Al[3940,13,3699,0,1985,4252,0]Al[3940,13,3699,0,4274,4252,0]Al[3940,13,1920,0,4924,4252,0]Al[3940,13,1920,0,1338,4252,0]Ao[4727,13,4728,1953,1601,4252,0]Ao[4727,13,4728,1953,4929,4252,0]Ao[4727,13,4728,3166,4770,4252,0]Ao[4727,13,4728,1523,1584,4252,0]Ao[4727,13,4728,1523,4150,4252,0]Ao[4727,13,4728,1523,3323,4252,0]Ao[4727,13,4728,1523,3137,4252,0]Ao[4727,13,4728,1523,4824,4252,0]Ao[4727,13,4728,1523,3298,4252,0]Ao[4727,13,4728,1538,2428,4252,0]Ao[4727,13,4728,1538,3309,4252,0]Ao[4727,13,4728,1538,3139,4252,0]Ao[4727,13,4728,1538,4492,4252,0]Ao[4727,13,4728,1072,3142,4252,0]Ao[4727,13,4728,1072,4282,4252,0]Ao[4727,13,4728,1077,2012,4252,0]Ao[4727,13,4728,1077,3348,4252,0]Ao[4727,13,4728,1077,3984,4252,0]Ao[4727,13,4728,2145,4394,4252,0]Ao[4727,13,4728,2145,4116,4252,0]Ao[4727,13,4728,3705,4488,4252,0]Ao[4727,13,4728,3705,3134,4252,0]Ao[4727,13,4728,3705,4360,4252,0]Ao[4727,13,4728,3705,5012,4252,0]Ao[4727,13,4728,3285,4509,4252,0]Ao[4727,13,4728,3285,4794,4252,0]Ao[4727,13,4728,3285,4809,4252,0]Ao[4727,13,4728,3285,3986,4252,0]Ao[4727,13,4728,1839,4370,4252,0]Ao[4727,13,4728,1839,4156,4252,0]Ao[4727,13,4728,1839,4986,4252,0]Ao[4727,13,4728,1839,4108,4252,0]Ao[4727,13,4728,1839,3976,4252,0]Ao[4727,13,4728,1513,3122,4252,0]Ao[4727,13,4728,1513,3315,4252,0]Ao[4727,13,4728,1513,3337,4252,0]Ao[4727,13,4728,1513,4123,4252,0]Ao[4727,13,4728,1513,4486,4252,0]Ao[4727,13,4728,1513,4674,4252,0]Ao[4727,13,4728,1513,2386,4252,0]Ao[4727,13,4728,2438,4678,4252,0]Ao[4727,13,4728,2438,4119,4252,0]Ao[4727,13,4728,1904,4500,4252,0]Ao[4727,13,4728,1904,5015,4252,0]Ao[4727,13,4728,1904,2399,4252,0]Ao[4727,13,4728,1904,4768,4252,0]Ao[4727,13,4728,1931,4122,4252,0]Ao[4727,13,4728,1931,4127,4252,0]Al[4727,13,4728,0,4398,4252,0]Al[4727,13,4728,0,4828,4252,0]Ao[4727,13,4728,4295,3312,4252,0]Ao[4727,13,4728,4295,5108,4252,0]An[4727,13,4728,4728,483,4252,0]An[4727,13,4728,4728,118,4252,0]Ao[4727,13,4728,4728,2416,4252,0]Ao[4727,13,4728,4728,3120,4252,0]Ao[4727,13,1837,1837,4288,4252,0]Ao[4727,13,4970,4970,4869,4252,0]Ao[4727,13,4970,4970,1340,4252,0]Ao[4727,13,1921,1921,4925,4252,0]Al[4727,13,1921,0,1339,4252,0]Am[4727,13,3700,133,112,4252,0]An[4727,13,3700,133,3110,4252,0]Ao[4727,13,3700,1508,1326,4252,0]Ao[4727,13,3700,1508,3981,4252,0]Ao[4727,13,3700,2486,1986,4252,0]Ao[4727,13,3700,2486,4275,4252,0]Ao[4727,13,2116,2116,1344,4252,0]Ao[4433,13,4434,4434,2413,4252,0]Ao[4433,13,4434,4434,2426,4252,0]Ao[4433,13,4434,4434,4128,4252,0]Ao[1047,13,1048,1048,4862,4252,0]Ao[1047,13,1539,1539,4496,4252,0]Ah[3940,7,3941,2137,0,0,0]Ai[3940,13,3941,0,4369,0,0]Al[4727,13,4728,1839,4370,0,0]Ai[3940,12,1841,0,3131,0,0]Al[4727,12,1842,1842,3132,0,0]Al[4433,14,4434,4434,2413,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]10Ae[1047,7,1048,0,0,0,0]Al[3940,13,3941,2437,2392,0,0]Ae[4298,7,4299,0,0,0,0]Ae[1362,7,1363,0,0,0,0]Al[4727,13,4728,3705,3303,0,0]Al[3940,13,3941,3704,3302,0,0]1Al[4727,13,4728,2145,4394,0,0]Al[1362,13,1537,1537,1358,0,0]Al[1362,14,1537,1537,4003,0,0]Al[3940,12,3941,2137,1997,0,0]Ao[3940,13,3941,1549,4161,1997,0]Ao[3940,13,3941,1089,3998,1997,0]Ai[3940,12,1841,0,1998,0,0]Al[3940,13,1920,0,3342,1998,0]Al[4727,12,1842,1842,1999,0,0]Ao[4727,13,1921,1921,3343,1999,0]Ah[3940,5,3941,1046,0,0,0]Ai[3940,15,3941,0,3121,0,0]Ah[3940,5,3941,1513,0,0,0]Al[4727,15,4728,1513,3122,0,0]Ah[4727,5,4728,1513,0,0,0]Ai[3940,15,3941,0,4487,0,0]Al[4727,15,4728,3705,4488,0,0]Ah[4727,5,4728,2438,0,0,0]Al[4727,15,4728,3705,1343,0,0]Ai[3940,15,3941,0,4118,0,0]Al[4727,15,4728,2438,4119,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]32Al[4727,15,4728,3705,3134,0,0]><><><21Ah[3940,5,1920,1921,0,0,0]Ae[4727,5,1921,0,0,0,0]10Ah[3940,5,3941,4858,0,0,0]Ah[4727,5,4728,4858,0,0,0]Al[4727,15,2116,2116,1341,0,0]5Al[4727,15,4728,1904,4500,0,0]Ai[3940,12,3941,0,2420,0,0]Al[3940,13,3941,0,4246,2420,0]Al[3940,13,3941,0,4138,2420,0]Al[4727,12,4728,1548,2421,0,0]Ao[4727,13,4728,4518,4247,2421,0]Ao[4727,13,4728,1548,4139,2421,0]Ae[4009,7,4010,0,0,0,0]Al[3940,13,3941,3704,3302,0,0]Al[4727,13,4728,3705,3303,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]32An[1362,13,1363,1363,125,4371,0]Ao[1047,13,1048,1048,3113,4371,0]An[1047,13,1831,1831,126,4371,0]An[1047,13,1926,1926,127,4371,0]An[3960,13,3961,3961,116,4371,0]Ao[3960,13,3961,3961,2383,4371,0]Ab[4727,3,0,0,0,0,0]Ak[4433,13,4434,390,4399,0,0]Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0];:Al[3940,13,3941,2437,2392,0,0]Al[4727,13,4728,2438,2393,0,0]?>32Ae[4298,7,4299,0,0,0,0]5Al[1047,14,1048,1048,3113,0,0]60Ae[1362,7,1363,0,0,0,0]Ai[3940,13,3941,0,4154,0,0]Ai[3940,13,3941,0,4106,0,0]Al[4727,13,4728,1839,4156,0,0]Al[4727,13,4728,1839,4108,0,0]Ai[3940,14,3941,0,4154,0,0]Al[4727,14,4728,1839,4156,0,0]53Al[3940,13,3941,4081,3333,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Ai[3940,15,3941,0,4487,0,0]Al[4727,15,4728,3705,4488,0,0]Ai[3940,10,3699,3700,0,0,0]Af[4727,10,3700,0,0,0,0]Ah[3940,5,3699,3700,0,0,0]Ae[4727,5,3700,0,0,0,0]Ai[3940,10,1841,1842,0,0,0]Af[4727,10,1842,0,0,0,0]Ai[3940,15,3941,0,4118,0,0]Al[4727,15,4728,2438,4119,0,0]Ah[4727,6,4728,1904,0,0,0]Ah[3940,6,3941,3704,0,0,0]Ah[4727,6,4728,3166,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]10Al[3940,15,3941,3704,4769,0,0]Al[4727,15,4728,3166,4770,0,0]Ai[3940,14,3941,0,3138,0,0]Al[4727,14,4728,1538,3139,0,0]Ai[3940,14,3699,0,4761,0,0]Al[4727,14,3700,3700,4762,0,0]Al[3940,13,3941,3704,3302,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]10Al[4727,13,4728,3166,3116,0,0]Al[3940,13,3941,2437,2392,0,0]Al[4727,13,4728,2438,2393,0,0]Ab[4788,3,0,0,0,0,0]Ao[1047,13,1048,1048,4862,3146,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Ah[3940,5,3941,3285,0,0,0]Ah[4727,5,4728,3285,0,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]54Ai[4727,10,4728,1904,0,0,0]Al[4727,15,4728,3705,1343,0,0]7600Al[4727,15,4728,1072,4282,0,0]4365Al[4727,15,2116,2116,1341,0,0]Ae[1047,9,1048,0,0,0,0]:9Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]<;<;Ah[4727,6,4728,1523,0,0,0]21Ae[3940,5,3941,0,0,0,0]Ae[4727,5,4728,0,0,0,0]Ai[3940,15,3941,0,4118,0,0]Ah[3940,5,1841,1842,0,0,0]Al[4727,15,4728,2438,4119,0,0]Al[4727,15,4728,1904,4768,0,0]Ae[4727,5,1842,0,0,0,0]An[1362,13,1363,1363,125,4361,0]Ao[1047,13,1048,1048,3113,4361,0]An[1047,13,1831,1831,126,4361,0]An[1047,13,1926,1926,127,4361,0]An[3960,13,3961,3961,116,4361,0]Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0]Ai[3940,13,3941,0,1600,0,0]Al[4727,13,4728,1953,1601,0,0]Al[3940,14,3941,2437,4255,0,0]Ai[3940,13,3941,0,4369,0,0]Al[4727,13,4728,1839,4370,0,0]Ai[3940,13,3941,0,4246,0,0]Al[4727,13,4728,4518,4247,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]6Al[4727,13,4728,3705,3303,0,0]Al[3940,13,3941,3704,3302,0,0]0176Ao[4009,13,4010,4010,5016,4822,0]Ai[3940,13,3941,0,4501,0,0]Al[4727,13,4728,1068,4502,0,0]Ae[1047,6,1048,0,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]10Al[4727,15,4728,3705,3134,0,0]Ae[4727,5,4970,0,0,0,0]Ah[3940,5,3941,4076,0,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]Al[4727,15,2116,2116,1341,0,0]Al[3940,14,3941,2437,4255,0,0]Ak[3940,13,3941,0,482,3103,0]Ak[3940,13,3941,0,117,3103,0]Al[3940,13,3941,0,2415,3103,0]An[4727,13,4728,4728,483,3103,0]An[4727,13,4728,4728,118,3103,0]Ao[4727,13,4728,4728,2416,3103,0]Ao[3960,13,3961,3961,2383,3338,0]Ai[3940,13,3941,0,4808,0,0]Al[4727,13,4728,3285,4809,0,0]Ai[3940,12,1841,0,1998,0,0]Al[3940,13,1920,0,3342,1998,0]Al[4727,12,1842,1842,1999,0,0]Ao[4727,13,1921,1921,3343,1999,0]Al[3940,13,3941,3704,3302,0,0]Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0]Ai[3940,14,3941,0,3138,0,0]Al[4727,14,4728,1538,3139,0,0]Ai[3940,12,3699,0,3304,0,0]Ak[3940,13,3699,0,111,3304,0]Al[3940,13,3699,0,1325,3304,0]Al[3940,13,3699,0,1985,3304,0]Al[4727,12,3700,3700,3305,0,0]Am[4727,13,3700,133,112,3305,0]Ao[4727,13,3700,1508,1326,3305,0]Ao[4727,13,3700,2486,1986,3305,0]Al[3940,14,3941,2437,4255,0,0]Al[4727,13,4728,2145,2005,0,0]Ah[4727,2,4293,4080,0,0,0]Ae[1362,7,1363,0,0,0,0]==Ak[3940,13,3941,1046,475,0,0]Ak[4433,13,4434,390,4399,0,0]032Ai[3940,12,1841,0,1998,0,0]Al[3940,13,1920,0,3342,1998,0]Ae[4727,2,4728,0,0,0,0]Al[4727,12,1842,1842,1999,0,0]Ao[4727,13,1921,1921,3343,1999,0]Ai[3940,10,3941,4295,0,0,0]Ai[4727,10,4728,4295,0,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]Ai[3940,15,3941,0,4118,0,0]Al[4727,15,4728,2438,4119,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Ah[3940,5,3941,1839,0,0,0]Ah[4727,5,4728,1839,0,0,0]Ai[3940,12,1841,0,3131,0,0]Al[4727,12,1842,1842,3132,0,0]Al[4727,13,4728,2438,2393,0,0]Al[4727,13,4728,4728,3120,0,0]Al[4727,13,4728,3705,3303,0,0]Ai[3940,13,3699,0,4274,0,0]Al[4727,13,3700,2486,4275,0,0]Al[3940,13,3941,2137,3144,0,0]0Al[3940,13,3941,3704,3302,0,0]4Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0]Al[1047,14,1048,1048,3113,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Al[4727,15,2116,2116,1341,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]10Al[4727,15,4728,1523,4824,0,0]Al[4727,15,4728,3705,3134,0,0]Ah[4727,5,4728,3705,0,0,0]Ai[3940,15,3941,0,3121,0,0]Al[4727,15,4728,1513,3122,0,0]Ah[4727,5,4728,1904,0,0,0]Ae[4009,5,4010,0,0,0,0]Al[1047,13,1048,1048,3113,0,0]Al[3940,13,3941,3704,3302,0,0]Ai[3940,12,1841,0,1998,0,0]Al[3940,13,1920,0,3342,1998,0]Al[4727,12,1842,1842,1999,0,0]Ao[4727,13,1921,1921,3343,1999,0]Ah[4727,7,4904,4903,0,0,0]0Al[4727,13,4728,3705,3303,0,0]6Ak[3940,13,3941,1046,475,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]Ao[4009,13,4010,4010,5016,4822,0]0Ai[3940,13,3941,0,4106,0,0]Al[4727,13,4728,1839,4108,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]10Ai[3940,13,3941,0,4793,0,0]Al[4727,13,4728,3285,4794,0,0]Am[1362,13,1363,1363,125,457,0]An[1047,13,1048,1048,3113,457,0]Am[1047,13,1831,1831,126,457,0]Am[1047,13,1926,1926,127,457,0]Am[3960,13,3961,3961,116,457,0]??>An[1362,13,1363,1363,125,4371,0]Ao[1047,13,1048,1048,3113,4371,0]An[1047,13,1831,1831,126,4371,0]An[1047,13,1926,1926,127,4371,0]An[3960,13,3961,3961,116,4371,0]Ao[3960,13,3961,3961,2383,4371,0]Ai[3940,13,3941,0,4154,0,0]Al[4727,13,4728,1839,4156,0,0]Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]Ae[1047,5,4213,0,0,0,0]0Ai[3940,13,3941,0,4369,0,0]Al[4727,13,4728,1839,4370,0,0]Ai[3940,13,3941,0,4106,0,0]Al[4727,13,4728,1839,4108,0,0]Al[3940,13,3941,2437,2392,0,0]Al[3940,13,3941,2464,2396,0,0]Al[4727,13,4728,2438,2397,0,0]Al[4727,13,4728,3705,3303,0,0]Ao[4009,13,4010,4010,5016,4822,0];:Ah[3940,5,1841,1842,0,0,0]Ae[4727,5,1842,0,0,0,0]Ai[3940,15,1920,0,1338,0,0]Ai[4727,15,1921,0,1339,0,0]?>?>Al[3940,13,3941,3704,3302,0,0]6Ai[3940,13,3941,0,4508,0,0]Al[4727,13,4728,3285,4509,0,0]Ae[4009,7,4010,0,0,0,0]Ae[4298,7,4299,0,0,0,0]Ai[3940,14,3941,0,3308,0,0]Al[4727,14,4728,1538,3309,0,0]?=Ai[3940,19,3941,0,4827,0,0]Ai[4727,19,4728,0,4828,0,0]2=<==<>=>=>=<;<;Al[4727,14,4970,4970,4869,0,0]?>Ai[4727,18,4728,3285,0,0,0]")
\ No newline at end of file
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index f97d324b1..000000000
--- a/pr/323/docs/search.index/function/0a18a7c168e3.js
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diff --git a/pr/323/docs/search.index/name/52ee5dc5acb9.js b/pr/323/docs/search.index/name/52ee5dc5acb9.js
deleted file mode 100644
index 405f23b32..000000000
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\ No newline at end of file
diff --git a/pr/323/docs/search.index/normalizedName/9cdde8eea858.js b/pr/323/docs/search.index/normalizedName/9cdde8eea858.js
deleted file mode 100644
index 2008b2f86..000000000
--- a/pr/323/docs/search.index/normalizedName/9cdde8eea858.js
+++ /dev/null
@@ -1 +0,0 @@
-rd_("b()b->bbi0bce00bfnbidbokb[]beq0000000000000000000000000000000000000000000000000000000000000000000000000000033333333333333brtbtybu8cack0canycarccbbr00cboxcbufcclicdir0cerrcmax000cnotcopt00cordcpincuni0cvecbbi0bce00bfnbidbokb[]beq0000000000000000000000000000000000000000000000000000000000000000000000000000033333333333333brtbtybu8cack0canycarccbbr00cboxcbufcclicdir0cerrcmax000cnotcopt00cordcpincuni0cvecA`[5,\"iroh_quinn\"]Cl[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config::transport\"]Ae[10,\"tonic::request\"]Aa[10,\"iroh_quinn\"]Ch[10,\"iroh_quinn_proto\",\"iroh_quinn_proto::config::qlog\"]Bl[5,\"iroh_quinn\",\"iroh_quinn::runtime::smol\"]Af[2,\"iroh_quinn_proto\"]Cn[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams\"]Ba[5,\"bench::stats\",\"bench::stats\"]Ao[5,\"perf::stats\",\"perf::stats\"]Ci[5,\"ring::error::unspecified\",\"ring::error::unspecified\"]f[3,\"\"]A`[2,\"iroh_quinn\"]Bb[2,\"iroh_quinn_proto::connection\"]1Co[5,\"rustls::client::client_conn\",\"rustls::client::client_conn\"]Ci[5,\"iroh_quinn_proto::config\",\"iroh_quinn_proto::config\"]?Ai[10,\"iroh_quinn::crypto\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config\"]Cj[10,\"iroh_quinn_proto::crypto\",\"iroh_quinn_proto::crypto\"]A`[5,\"iroh_quinn\"]Cn[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams\"]Cm[6,\"iroh_quinn_proto::endpoint\",\"iroh_quinn_proto::endpoint\"]A`[6,\"iroh_quinn\"]Cc[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::endpoint\"]Ci[5,\"iroh_quinn_proto::shared\",\"iroh_quinn_proto::shared\"]5Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::frame\"]4Ca[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]Be[6,\"iroh_quinn_udp\",\"iroh_quinn_udp\"]Bm[8,\"core::num::nonzero\",\"core::num::nonzero\"]:C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::token\"]Bb[15,\"iroh_quinn_proto::PathEvent\"]Bi[5,\"iroh_quinn\",\"iroh_quinn::connection\"]1Do[5,\"iroh_quinn_proto::connection::paths\",\"iroh_quinn_proto::connection::paths\"]Cl[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::paths\"]2Co[5,\"rustls::server::server_conn\",\"rustls::server::server_conn\"]Ci[5,\"iroh_quinn_proto::config\",\"iroh_quinn_proto::config\"]A`[5,\"iroh_quinn\"]Ai[10,\"iroh_quinn::crypto\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config\"]Cj[10,\"iroh_quinn_proto::crypto\",\"iroh_quinn_proto::crypto\"]Ce[5,\"core::net::socket_addr\",\"core::net::socket_addr\"]0Bj[6,\"iroh_quinn\",\"iroh_quinn::send_stream\"]Bm[5,\"iroh_quinn\",\"iroh_quinn::runtime::tokio\"]Cg[5,\"arbitrary::unstructured\",\"arbitrary::unstructured\"]j[2,\"perf\"]8Cj[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::bloom_token_log\"]Ab[10,\"core::clone\"]Cc[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::endpoint\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]Bg[5,\"iroh_quinn\",\"iroh_quinn::endpoint\"]B`[5,\"iroh_quinn::crypto::rustls\"]Di[5,\"iroh_quinn_proto::crypto::rustls\",\"iroh_quinn_proto::crypto::rustls\"]Bc[6,\"rustls::enums\",\"rustls::enums\"]Bb[15,\"iroh_quinn_proto::PathEvent\"]Al[5,\"iroh_quinn::congestion\"]Dk[5,\"iroh_quinn_proto::congestion\",\"iroh_quinn_proto::congestion::new_reno\"]Bi[5,\"core::num::error\",\"core::num::error\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::packet\"]Ec[5,\"clap_builder::builder::possible_value\",\"clap_builder::builder::possible_value\"]Bi[6,\"rustls_pki_types\",\"rustls_pki_types\"]Dd[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams::recv\"]Cg[5,\"rustls::webpki::anchors\",\"rustls::webpki::anchors\"]A`[5,\"iroh_quinn\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config\"]Ci[5,\"iroh_quinn_proto::coding\",\"iroh_quinn_proto::coding\"]Af[2,\"iroh_quinn_proto\"]0f[3,\"\"]Bg[10,\"iroh_quinn\",\"iroh_quinn::runtime\"]Bi[5,\"rustls_pki_types\",\"rustls_pki_types\"]Da[6,\"iroh_quinn_proto::connection\",\"iroh_quinn_proto::connection\"]Ce[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection\"]Ak[10,\"clap_builder::derive\"]An[15,\"iroh_quinn_proto::Event\"]:91Bg[5,\"iroh_quinn\",\"iroh_quinn::incoming\"]C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::frame\"]Bc[6,\"rustls::error\",\"rustls::error\"]=C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::token\"]1Bj[6,\"iroh_quinn\",\"iroh_quinn::recv_stream\"]0Cn[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams\"]Ba[5,\"bench::stats\",\"bench::stats\"]Af[5,\"iroh_quinn_proto\"]Bj[5,\"iroh_quinn_udp\",\"iroh_quinn_udp::imp\"]?A`[5,\"iroh_quinn\"]8A`[6,\"iroh_quinn\"]=Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]2Cl[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::stats\"]Ba[5,\"rustls::rand\",\"rustls::rand\"]Ao[5,\"perf::stats\",\"perf::stats\"]Af[2,\"iroh_quinn_proto\"]Ca[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::packet\"]7Cg[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config::qlog\"]Bc[6,\"rustls::enums\",\"rustls::enums\"]Ak[5,\"std::time\",\"std::time\"]:C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::token\"]Do[5,\"iroh_quinn_proto::config::transport\",\"iroh_quinn_proto::config::transport\"]A`[5,\"iroh_quinn\"]Cl[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config::transport\"]Ae[10,\"tonic::request\"]Aa[10,\"iroh_quinn\"]Ch[10,\"iroh_quinn_proto\",\"iroh_quinn_proto::config::qlog\"]Bl[5,\"iroh_quinn\",\"iroh_quinn::runtime::smol\"]Af[2,\"iroh_quinn_proto\"]Cn[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams\"]Ba[5,\"bench::stats\",\"bench::stats\"]Ao[5,\"perf::stats\",\"perf::stats\"]Ci[5,\"ring::error::unspecified\",\"ring::error::unspecified\"]f[3,\"\"]A`[2,\"iroh_quinn\"]Bb[2,\"iroh_quinn_proto::connection\"]1Co[5,\"rustls::client::client_conn\",\"rustls::client::client_conn\"]Ci[5,\"iroh_quinn_proto::config\",\"iroh_quinn_proto::config\"]?Ai[10,\"iroh_quinn::crypto\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config\"]Cj[10,\"iroh_quinn_proto::crypto\",\"iroh_quinn_proto::crypto\"]A`[5,\"iroh_quinn\"]Cn[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams\"]Cm[6,\"iroh_quinn_proto::endpoint\",\"iroh_quinn_proto::endpoint\"]A`[6,\"iroh_quinn\"]Cc[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::endpoint\"]Ci[5,\"iroh_quinn_proto::shared\",\"iroh_quinn_proto::shared\"]5Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::frame\"]4Ca[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]Be[6,\"iroh_quinn_udp\",\"iroh_quinn_udp\"]Bm[8,\"core::num::nonzero\",\"core::num::nonzero\"]:C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::token\"]Bb[15,\"iroh_quinn_proto::PathEvent\"]Bi[5,\"iroh_quinn\",\"iroh_quinn::connection\"]1Do[5,\"iroh_quinn_proto::connection::paths\",\"iroh_quinn_proto::connection::paths\"]Cl[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::paths\"]2Co[5,\"rustls::server::server_conn\",\"rustls::server::server_conn\"]Ci[5,\"iroh_quinn_proto::config\",\"iroh_quinn_proto::config\"]A`[5,\"iroh_quinn\"]Ai[10,\"iroh_quinn::crypto\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config\"]Cj[10,\"iroh_quinn_proto::crypto\",\"iroh_quinn_proto::crypto\"]Ce[5,\"core::net::socket_addr\",\"core::net::socket_addr\"]0Bj[6,\"iroh_quinn\",\"iroh_quinn::send_stream\"]Bm[5,\"iroh_quinn\",\"iroh_quinn::runtime::tokio\"]Cg[5,\"arbitrary::unstructured\",\"arbitrary::unstructured\"]j[2,\"perf\"]8Cj[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::bloom_token_log\"]Ab[10,\"core::clone\"]Cc[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::endpoint\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]Bg[5,\"iroh_quinn\",\"iroh_quinn::endpoint\"]B`[5,\"iroh_quinn::crypto::rustls\"]Di[5,\"iroh_quinn_proto::crypto::rustls\",\"iroh_quinn_proto::crypto::rustls\"]Bc[6,\"rustls::enums\",\"rustls::enums\"]Bb[15,\"iroh_quinn_proto::PathEvent\"]Al[5,\"iroh_quinn::congestion\"]Dk[5,\"iroh_quinn_proto::congestion\",\"iroh_quinn_proto::congestion::new_reno\"]Bi[5,\"core::num::error\",\"core::num::error\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::packet\"]Ec[5,\"clap_builder::builder::possible_value\",\"clap_builder::builder::possible_value\"]Bi[6,\"rustls_pki_types\",\"rustls_pki_types\"]Dd[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams::recv\"]Cg[5,\"rustls::webpki::anchors\",\"rustls::webpki::anchors\"]A`[5,\"iroh_quinn\"]Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config\"]Ci[5,\"iroh_quinn_proto::coding\",\"iroh_quinn_proto::coding\"]Af[2,\"iroh_quinn_proto\"]0f[3,\"\"]Bg[10,\"iroh_quinn\",\"iroh_quinn::runtime\"]Bi[5,\"rustls_pki_types\",\"rustls_pki_types\"]Da[6,\"iroh_quinn_proto::connection\",\"iroh_quinn_proto::connection\"]Ce[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection\"]Ak[10,\"clap_builder::derive\"]An[15,\"iroh_quinn_proto::Event\"]:91Bg[5,\"iroh_quinn\",\"iroh_quinn::incoming\"]C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::frame\"]Bc[6,\"rustls::error\",\"rustls::error\"]=C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::token\"]1Bj[6,\"iroh_quinn\",\"iroh_quinn::recv_stream\"]0Cn[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::streams\"]Ba[5,\"bench::stats\",\"bench::stats\"]Af[5,\"iroh_quinn_proto\"]Bj[5,\"iroh_quinn_udp\",\"iroh_quinn_udp::imp\"]?A`[5,\"iroh_quinn\"]8A`[6,\"iroh_quinn\"]=Ca[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::shared\"]2Cl[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::connection::stats\"]Ba[5,\"rustls::rand\",\"rustls::rand\"]Ao[5,\"perf::stats\",\"perf::stats\"]Af[2,\"iroh_quinn_proto\"]Ca[6,\"iroh_quinn_proto\",\"iroh_quinn_proto::packet\"]7Cg[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::config::qlog\"]Bc[6,\"rustls::enums\",\"rustls::enums\"]Ak[5,\"std::time\",\"std::time\"]:C`[5,\"iroh_quinn_proto\",\"iroh_quinn_proto::token\"]Do[5,\"iroh_quinn_proto::config::transport\",\"iroh_quinn_proto::config::transport\"]Settings
All
Rustdoc settings
Back

\ No newline at end of file
+Settings
All
Rustdoc settings
Back

\ No newline at end of file
diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/datagrams.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/datagrams.rs.html
index 6248844ea..8d086e148 100644
--- a/pr/323/docs/src/iroh_quinn_proto/connection/datagrams.rs.html
+++ b/pr/323/docs/src/iroh_quinn_proto/connection/datagrams.rs.html
@@ -1,13 +1,13 @@
 datagrams.rs - source
iroh_quinn_proto/connection/
datagrams.rs
1use std::collections::VecDeque;
 2
-3use bytes::{BufMut, Bytes};
+3use bytes::Bytes;
 4use thiserror::Error;
 5use tracing::{debug, trace};
 6
 7use super::Connection;
 8use crate::{
-9    TransportError,
-10    coding::Encodable,
+9    FrameStats, TransportError,
+10    connection::PacketBuilder,
 11    frame::{Datagram, FrameStruct},
 12};
 13
@@ -172,49 +172,51 @@
 172    ///
 173    /// Returns whether a frame was written. At most `max_size` bytes will be written, including
 174    /// framing.
-175    pub(super) fn write(&mut self, buf: &mut impl BufMut) -> bool {
-176        let datagram = match self.outgoing.pop_front() {
-177            Some(x) => x,
-178            None => return false,
-179        };
-180
-181        if buf.remaining_mut() < datagram.size(true) {
-182            // Future work: we could be more clever about cramming small datagrams into
-183            // mostly-full packets when a larger one is queued first
-184            self.outgoing.push_front(datagram);
-185            return false;
-186        }
-187
-188        trace!(len = datagram.data.len(), "DATAGRAM");
-189
-190        self.outgoing_total -= datagram.data.len();
-191        datagram.encode(buf);
-192        true
-193    }
-194
-195    pub(super) fn recv(&mut self) -> Option<Bytes> {
-196        let x = self.incoming.pop_front()?.data;
-197        self.recv_buffered -= x.len();
-198        Some(x)
-199    }
-200}
-201
-202/// Errors that can arise when sending a datagram
-203#[derive(Debug, Error, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
-204pub enum SendDatagramError {
-205    /// The peer does not support receiving datagram frames
-206    #[error("datagrams not supported by peer")]
-207    UnsupportedByPeer,
-208    /// Datagram support is disabled locally
-209    #[error("datagram support disabled")]
-210    Disabled,
-211    /// The datagram is larger than the connection can currently accommodate
-212    ///
-213    /// Indicates that the path MTU minus overhead or the limit advertised by the peer has been
-214    /// exceeded.
-215    #[error("datagram too large")]
-216    TooLarge,
-217    /// Send would block
-218    #[error("datagram send blocked")]
-219    Blocked(Bytes),
-220}

\ No newline at end of file
+175    pub(super) fn write<'a, 'b>(
+176        &mut self,
+177        buf: &mut PacketBuilder<'a, 'b>,
+178        stat: &mut FrameStats,
+179    ) -> bool {
+180        let datagram = match self.outgoing.pop_front() {
+181            Some(x) => x,
+182            None => return false,
+183        };
+184
+185        if buf.frame_space_remaining() < datagram.size(true) {
+186            // Future work: we could be more clever about cramming small datagrams into
+187            // mostly-full packets when a larger one is queued first
+188            self.outgoing.push_front(datagram);
+189            return false;
+190        }
+191
+192        self.outgoing_total -= datagram.data.len();
+193        buf.write_frame(datagram, stat);
+194        true
+195    }
+196
+197    pub(super) fn recv(&mut self) -> Option<Bytes> {
+198        let x = self.incoming.pop_front()?.data;
+199        self.recv_buffered -= x.len();
+200        Some(x)
+201    }
+202}
+203
+204/// Errors that can arise when sending a datagram
+205#[derive(Debug, Error, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
+206pub enum SendDatagramError {
+207    /// The peer does not support receiving datagram frames
+208    #[error("datagrams not supported by peer")]
+209    UnsupportedByPeer,
+210    /// Datagram support is disabled locally
+211    #[error("datagram support disabled")]
+212    Disabled,
+213    /// The datagram is larger than the connection can currently accommodate
+214    ///
+215    /// Indicates that the path MTU minus overhead or the limit advertised by the peer has been
+216    /// exceeded.
+217    #[error("datagram too large")]
+218    TooLarge,
+219    /// Send would block
+220    #[error("datagram send blocked")]
+221    Blocked(Bytes),
+222}

\ No newline at end of file
diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/mod.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/mod.rs.html
index 44cb4dec1..132fd1fa3 100644
--- a/pr/323/docs/src/iroh_quinn_proto/connection/mod.rs.html
+++ b/pr/323/docs/src/iroh_quinn_proto/connection/mod.rs.html
@@ -23,6855 +23,6682 @@
 23    TransportError, TransportErrorCode, VarInt,
 24    cid_generator::ConnectionIdGenerator,
 25    cid_queue::CidQueue,
-26    coding::{BufMutExt, Encodable},
-27    config::{ServerConfig, TransportConfig},
-28    congestion::Controller,
-29    connection::{
-30        qlog::{QlogRecvPacket, QlogSentPacket, QlogSink},
-31        spaces::LostPacket,
-32        timer::{ConnTimer, PathTimer},
-33    },
-34    crypto::{self, KeyPair, Keys, PacketKey},
-35    frame::{self, Close, Datagram, FrameStruct, NewToken, ObservedAddr},
-36    iroh_hp,
-37    packet::{
-38        FixedLengthConnectionIdParser, Header, InitialHeader, InitialPacket, LongType, Packet,
-39        PacketNumber, PartialDecode, SpaceId,
-40    },
-41    range_set::ArrayRangeSet,
-42    shared::{
-43        ConnectionEvent, ConnectionEventInner, ConnectionId, DatagramConnectionEvent, EcnCodepoint,
-44        EndpointEvent, EndpointEventInner,
-45    },
-46    token::{ResetToken, Token, TokenPayload},
-47    transport_parameters::TransportParameters,
-48};
-49
-50mod ack_frequency;
-51use ack_frequency::AckFrequencyState;
-52
-53mod assembler;
-54pub use assembler::Chunk;
-55
-56mod cid_state;
-57use cid_state::CidState;
-58
-59mod datagrams;
-60use datagrams::DatagramState;
-61pub use datagrams::{Datagrams, SendDatagramError};
-62
-63mod mtud;
-64mod pacing;
-65
-66mod packet_builder;
-67use packet_builder::{PacketBuilder, PadDatagram};
-68
-69mod packet_crypto;
-70use packet_crypto::{PrevCrypto, ZeroRttCrypto};
-71
-72mod paths;
-73pub use paths::{ClosedPath, PathEvent, PathId, PathStatus, RttEstimator, SetPathStatusError};
-74use paths::{PathData, PathState};
-75
-76pub(crate) mod qlog;
-77pub(crate) mod send_buffer;
-78
-79mod spaces;
-80#[cfg(fuzzing)]
-81pub use spaces::Retransmits;
-82#[cfg(not(fuzzing))]
-83use spaces::Retransmits;
-84use spaces::{PacketSpace, SendableFrames, SentPacket, ThinRetransmits};
-85
-86mod stats;
-87pub use stats::{ConnectionStats, FrameStats, PathStats, UdpStats};
-88
-89mod streams;
-90#[cfg(fuzzing)]
-91pub use streams::StreamsState;
-92#[cfg(not(fuzzing))]
-93use streams::StreamsState;
-94pub use streams::{
-95    Chunks, ClosedStream, FinishError, ReadError, ReadableError, RecvStream, SendStream,
-96    ShouldTransmit, StreamEvent, Streams, WriteError, Written,
-97};
-98
-99mod timer;
-100use timer::{Timer, TimerTable};
-101
-102mod transmit_buf;
-103use transmit_buf::TransmitBuf;
-104
-105mod state;
-106
-107#[cfg(not(fuzzing))]
-108use state::State;
-109#[cfg(fuzzing)]
-110pub use state::State;
-111use state::StateType;
-112
-113/// Protocol state and logic for a single QUIC connection
-114///
-115/// Objects of this type receive [`ConnectionEvent`]s and emit [`EndpointEvent`]s and application
-116/// [`Event`]s to make progress. To handle timeouts, a `Connection` returns timer updates and
-117/// expects timeouts through various methods. A number of simple getter methods are exposed
-118/// to allow callers to inspect some of the connection state.
-119///
-120/// `Connection` has roughly 4 types of methods:
-121///
-122/// - A. Simple getters, taking `&self`
-123/// - B. Handlers for incoming events from the network or system, named `handle_*`.
-124/// - C. State machine mutators, for incoming commands from the application. For convenience we
-125///   refer to this as "performing I/O" below, however as per the design of this library none of the
-126///   functions actually perform system-level I/O. For example, [`read`](RecvStream::read) and
-127///   [`write`](SendStream::write), but also things like [`reset`](SendStream::reset).
-128/// - D. Polling functions for outgoing events or actions for the caller to
-129///   take, named `poll_*`.
-130///
-131/// The simplest way to use this API correctly is to call (B) and (C) whenever
-132/// appropriate, then after each of those calls, as soon as feasible call all
-133/// polling methods (D) and deal with their outputs appropriately, e.g. by
-134/// passing it to the application or by making a system-level I/O call. You
-135/// should call the polling functions in this order:
-136///
-137/// 1. [`poll_transmit`](Self::poll_transmit)
-138/// 2. [`poll_timeout`](Self::poll_timeout)
-139/// 3. [`poll_endpoint_events`](Self::poll_endpoint_events)
-140/// 4. [`poll`](Self::poll)
-141///
-142/// Currently the only actual dependency is from (2) to (1), however additional
-143/// dependencies may be added in future, so the above order is recommended.
-144///
-145/// (A) may be called whenever desired.
-146///
-147/// Care should be made to ensure that the input events represent monotonically
-148/// increasing time. Specifically, calling [`handle_timeout`](Self::handle_timeout)
-149/// with events of the same [`Instant`] may be interleaved in any order with a
-150/// call to [`handle_event`](Self::handle_event) at that same instant; however
-151/// events or timeouts with different instants must not be interleaved.
-152pub struct Connection {
-153    endpoint_config: Arc<EndpointConfig>,
-154    config: Arc<TransportConfig>,
-155    rng: StdRng,
-156    crypto: Box<dyn crypto::Session>,
-157    /// The CID we initially chose, for use during the handshake
-158    handshake_cid: ConnectionId,
-159    /// The CID the peer initially chose, for use during the handshake
-160    rem_handshake_cid: ConnectionId,
-161    /// The [`PathData`] for each path
-162    ///
-163    /// This needs to be ordered because [`Connection::poll_transmit`] needs to
-164    /// deterministically select the next PathId to send on.
-165    // TODO(flub): well does it really? But deterministic is nice for now.
-166    paths: BTreeMap<PathId, PathState>,
-167    /// Counter to uniquely identify every [`PathData`] created in this connection.
-168    ///
-169    /// Each [`PathData`] gets a [`PathData::generation`] that is unique among all
-170    /// [`PathData`]s created in the lifetime of this connection. This helps identify the
-171    /// correct path when RFC9000-style migrations happen, even when they are
-172    /// aborted.
-173    ///
-174    /// Multipath does not change this, each path can also undergo RFC9000-style
-175    /// migrations. So a single multipath path ID could see several [`PathData`]s each with
-176    /// their unique [`PathData::generation].
-177    path_generation_counter: u64,
-178    /// Whether MTU detection is supported in this environment
-179    allow_mtud: bool,
-180    state: State,
-181    side: ConnectionSide,
-182    /// Whether or not 0-RTT was enabled during the handshake. Does not imply acceptance.
-183    zero_rtt_enabled: bool,
-184    /// Set if 0-RTT is supported, then cleared when no longer needed.
-185    zero_rtt_crypto: Option<ZeroRttCrypto>,
-186    key_phase: bool,
-187    /// How many packets are in the current key phase. Used only for `Data` space.
-188    key_phase_size: u64,
-189    /// Transport parameters set by the peer
-190    peer_params: TransportParameters,
-191    /// Source ConnectionId of the first packet received from the peer
-192    orig_rem_cid: ConnectionId,
-193    /// Destination ConnectionId sent by the client on the first Initial
-194    initial_dst_cid: ConnectionId,
-195    /// The value that the server included in the Source Connection ID field of a Retry packet, if
-196    /// one was received
-197    retry_src_cid: Option<ConnectionId>,
-198    /// Events returned by [`Connection::poll`]
-199    events: VecDeque<Event>,
-200    endpoint_events: VecDeque<EndpointEventInner>,
-201    /// Whether the spin bit is in use for this connection
-202    spin_enabled: bool,
-203    /// Outgoing spin bit state
-204    spin: bool,
-205    /// Packet number spaces: initial, handshake, 1-RTT
-206    spaces: [PacketSpace; 3],
-207    /// Highest usable [`SpaceId`]
-208    highest_space: SpaceId,
-209    /// 1-RTT keys used prior to a key update
-210    prev_crypto: Option<PrevCrypto>,
-211    /// 1-RTT keys to be used for the next key update
-212    ///
-213    /// These are generated in advance to prevent timing attacks and/or DoS by third-party attackers
-214    /// spoofing key updates.
-215    next_crypto: Option<KeyPair<Box<dyn PacketKey>>>,
-216    accepted_0rtt: bool,
-217    /// Whether the idle timer should be reset the next time an ack-eliciting packet is transmitted.
-218    permit_idle_reset: bool,
-219    /// Negotiated idle timeout
-220    idle_timeout: Option<Duration>,
-221    timers: TimerTable,
-222    /// Number of packets received which could not be authenticated
-223    authentication_failures: u64,
-224
-225    //
-226    // Queued non-retransmittable 1-RTT data
-227    //
-228    /// If the CONNECTION_CLOSE frame needs to be sent
-229    close: bool,
-230
-231    //
-232    // ACK frequency
-233    //
-234    ack_frequency: AckFrequencyState,
-235
-236    //
-237    // Congestion Control
-238    //
-239    /// Whether the most recently received packet had an ECN codepoint set
-240    receiving_ecn: bool,
-241    /// Number of packets authenticated
-242    total_authed_packets: u64,
-243    /// Whether the last `poll_transmit` call yielded no data because there was
-244    /// no outgoing application data.
-245    app_limited: bool,
-246
-247    //
-248    // ObservedAddr
-249    //
-250    /// Sequence number for the next observed address frame sent to the peer.
-251    next_observed_addr_seq_no: VarInt,
-252
-253    streams: StreamsState,
-254    /// Surplus remote CIDs for future use on new paths
-255    ///
-256    /// These are given out before multiple paths exist, also for paths that will never
-257    /// exist.  So if multipath is supported the number of paths here will be higher than
-258    /// the actual number of paths in use.
-259    rem_cids: FxHashMap<PathId, CidQueue>,
-260    /// Attributes of CIDs generated by local endpoint
-261    ///
-262    /// Any path that is allowed to be opened is present in this map, as well as the already
-263    /// opened paths. However since CIDs are issued async by the endpoint driver via
-264    /// connection events it can not be used to know if CIDs have been issued for a path or
-265    /// not. See [`Connection::max_path_id_with_cids`] for this.
-266    local_cid_state: FxHashMap<PathId, CidState>,
-267    /// State of the unreliable datagram extension
-268    datagrams: DatagramState,
-269    /// Connection level statistics
-270    stats: ConnectionStats,
-271    /// Path level statistics
-272    path_stats: FxHashMap<PathId, PathStats>,
-273    /// QUIC version used for the connection.
-274    version: u32,
-275
-276    //
-277    // Multipath
-278    //
-279    /// Maximum number of concurrent paths
-280    ///
-281    /// Initially set from the [`TransportConfig::max_concurrent_multipath_paths`]. Even
-282    /// when multipath is disabled this will be set to 1, it is not used in that case
-283    /// though.
-284    max_concurrent_paths: NonZeroU32,
-285    /// Local maximum [`PathId`] to be used
-286    ///
-287    /// This is initially set to [`TransportConfig::get_initial_max_path_id`] when multipath
-288    /// is negotiated, or to [`PathId::ZERO`] otherwise. This is essentially the value of
-289    /// the highest MAX_PATH_ID frame sent.
-290    ///
-291    /// Any path with an ID equal or below this [`PathId`] is either:
-292    ///
-293    /// - Abandoned, if it is also in [`Connection::abandoned_paths`].
-294    /// - Open, in this case it is present in [`Connection::paths`]
-295    /// - Not yet opened, if it is in neither of these two places.
-296    ///
-297    /// Note that for not-yet-open there may or may not be any CIDs issued. See
-298    /// [`Connection::max_path_id_with_cids`].
-299    local_max_path_id: PathId,
-300    /// Remote's maximum [`PathId`] to be used
-301    ///
-302    /// This is initially set to the peer's [`TransportParameters::initial_max_path_id`] when
-303    /// multipath is negotiated, or to [`PathId::ZERO`] otherwise. A peer may increase this limit
-304    /// by sending [`Frame::MaxPathId`] frames.
-305    remote_max_path_id: PathId,
-306    /// The greatest [`PathId`] we have issued CIDs for
-307    ///
-308    /// CIDs are only issued for `min(local_max_path_id, remote_max_path_id)`. It is not
-309    /// possible to use [`Connection::local_cid_state`] to know if CIDs have been issued
-310    /// since they are issued asynchronously by the endpoint driver.
-311    max_path_id_with_cids: PathId,
-312    /// The paths already abandoned
-313    ///
-314    /// They may still have some state left in [`Connection::paths`] or
-315    /// [`Connection::local_cid_state`] since some of this has to be kept around for some
-316    /// time after a path is abandoned.
-317    // TODO(flub): Make this a more efficient data structure.  Like ranges of abandoned
-318    //    paths.  Or a set together with a minimum.  Or something.
-319    abandoned_paths: FxHashSet<PathId>,
-320
-321    iroh_hp: iroh_hp::State,
-322    qlog: QlogSink,
-323}
-324
-325impl Connection {
-326    pub(crate) fn new(
-327        endpoint_config: Arc<EndpointConfig>,
-328        config: Arc<TransportConfig>,
-329        init_cid: ConnectionId,
-330        loc_cid: ConnectionId,
-331        rem_cid: ConnectionId,
-332        network_path: FourTuple,
-333        crypto: Box<dyn crypto::Session>,
-334        cid_gen: &dyn ConnectionIdGenerator,
-335        now: Instant,
-336        version: u32,
-337        allow_mtud: bool,
-338        rng_seed: [u8; 32],
-339        side_args: SideArgs,
-340        qlog: QlogSink,
-341    ) -> Self {
-342        let pref_addr_cid = side_args.pref_addr_cid();
-343        let path_validated = side_args.path_validated();
-344        let connection_side = ConnectionSide::from(side_args);
-345        let side = connection_side.side();
-346        let mut rng = StdRng::from_seed(rng_seed);
-347        let initial_space = {
-348            let mut space = PacketSpace::new(now, SpaceId::Initial, &mut rng);
-349            space.crypto = Some(crypto.initial_keys(init_cid, side));
-350            space
-351        };
-352        let handshake_space = PacketSpace::new(now, SpaceId::Handshake, &mut rng);
-353        #[cfg(test)]
-354        let data_space = match config.deterministic_packet_numbers {
-355            true => PacketSpace::new_deterministic(now, SpaceId::Data),
-356            false => PacketSpace::new(now, SpaceId::Data, &mut rng),
-357        };
-358        #[cfg(not(test))]
-359        let data_space = PacketSpace::new(now, SpaceId::Data, &mut rng);
-360        let state = State::handshake(state::Handshake {
-361            rem_cid_set: side.is_server(),
-362            expected_token: Bytes::new(),
-363            client_hello: None,
-364            allow_server_migration: side.is_client(),
-365        });
-366        let local_cid_state = FxHashMap::from_iter([(
-367            PathId::ZERO,
-368            CidState::new(
-369                cid_gen.cid_len(),
-370                cid_gen.cid_lifetime(),
-371                now,
-372                if pref_addr_cid.is_some() { 2 } else { 1 },
-373            ),
-374        )]);
-375
-376        let mut path = PathData::new(network_path, allow_mtud, None, 0, now, &config);
-377        // TODO(@divma): consider if we want to delay this until the path is validated
-378        path.open = true;
-379        let mut this = Self {
-380            endpoint_config,
-381            crypto,
-382            handshake_cid: loc_cid,
-383            rem_handshake_cid: rem_cid,
-384            local_cid_state,
-385            paths: BTreeMap::from_iter([(
-386                PathId::ZERO,
-387                PathState {
-388                    data: path,
-389                    prev: None,
-390                },
-391            )]),
-392            path_generation_counter: 0,
-393            allow_mtud,
-394            state,
-395            side: connection_side,
-396            zero_rtt_enabled: false,
-397            zero_rtt_crypto: None,
-398            key_phase: false,
-399            // A small initial key phase size ensures peers that don't handle key updates correctly
-400            // fail sooner rather than later. It's okay for both peers to do this, as the first one
-401            // to perform an update will reset the other's key phase size in `update_keys`, and a
-402            // simultaneous key update by both is just like a regular key update with a really fast
-403            // response. Inspired by quic-go's similar behavior of performing the first key update
-404            // at the 100th short-header packet.
-405            key_phase_size: rng.random_range(10..1000),
-406            peer_params: TransportParameters::default(),
-407            orig_rem_cid: rem_cid,
-408            initial_dst_cid: init_cid,
-409            retry_src_cid: None,
-410            events: VecDeque::new(),
-411            endpoint_events: VecDeque::new(),
-412            spin_enabled: config.allow_spin && rng.random_ratio(7, 8),
-413            spin: false,
-414            spaces: [initial_space, handshake_space, data_space],
-415            highest_space: SpaceId::Initial,
-416            prev_crypto: None,
-417            next_crypto: None,
-418            accepted_0rtt: false,
-419            permit_idle_reset: true,
-420            idle_timeout: match config.max_idle_timeout {
-421                None | Some(VarInt(0)) => None,
-422                Some(dur) => Some(Duration::from_millis(dur.0)),
-423            },
-424            timers: TimerTable::default(),
-425            authentication_failures: 0,
-426            close: false,
-427
-428            ack_frequency: AckFrequencyState::new(get_max_ack_delay(
-429                &TransportParameters::default(),
-430            )),
-431
-432            app_limited: false,
-433            receiving_ecn: false,
-434            total_authed_packets: 0,
-435
-436            next_observed_addr_seq_no: 0u32.into(),
-437
-438            streams: StreamsState::new(
-439                side,
-440                config.max_concurrent_uni_streams,
-441                config.max_concurrent_bidi_streams,
-442                config.send_window,
-443                config.receive_window,
-444                config.stream_receive_window,
-445            ),
-446            datagrams: DatagramState::default(),
-447            config,
-448            rem_cids: FxHashMap::from_iter([(PathId::ZERO, CidQueue::new(rem_cid))]),
-449            rng,
-450            stats: ConnectionStats::default(),
-451            path_stats: Default::default(),
-452            version,
-453
-454            // peer params are not yet known, so multipath is not enabled
-455            max_concurrent_paths: NonZeroU32::MIN,
-456            local_max_path_id: PathId::ZERO,
-457            remote_max_path_id: PathId::ZERO,
-458            max_path_id_with_cids: PathId::ZERO,
-459            abandoned_paths: Default::default(),
-460
-461            // iroh's nat traversal
-462            iroh_hp: Default::default(),
-463            qlog,
-464        };
-465        if path_validated {
-466            this.on_path_validated(PathId::ZERO);
-467        }
-468        if side.is_client() {
-469            // Kick off the connection
-470            this.write_crypto();
-471            this.init_0rtt(now);
-472        }
-473        this.qlog
-474            .emit_tuple_assigned(PathId::ZERO, network_path, now);
-475        this
-476    }
-477
-478    /// Returns the next time at which `handle_timeout` should be called
-479    ///
-480    /// The value returned may change after:
-481    /// - the application performed some I/O on the connection
-482    /// - a call was made to `handle_event`
-483    /// - a call to `poll_transmit` returned `Some`
-484    /// - a call was made to `handle_timeout`
-485    #[must_use]
-486    pub fn poll_timeout(&mut self) -> Option<Instant> {
-487        self.timers.peek()
-488    }
-489
-490    /// Returns application-facing events
-491    ///
-492    /// Connections should be polled for events after:
-493    /// - a call was made to `handle_event`
-494    /// - a call was made to `handle_timeout`
-495    #[must_use]
-496    pub fn poll(&mut self) -> Option<Event> {
-497        if let Some(x) = self.events.pop_front() {
-498            return Some(x);
-499        }
-500
-501        if let Some(event) = self.streams.poll() {
-502            return Some(Event::Stream(event));
-503        }
-504
-505        if let Some(reason) = self.state.take_error() {
-506            return Some(Event::ConnectionLost { reason });
-507        }
-508
-509        None
-510    }
-511
-512    /// Return endpoint-facing events
-513    #[must_use]
-514    pub fn poll_endpoint_events(&mut self) -> Option<EndpointEvent> {
-515        self.endpoint_events.pop_front().map(EndpointEvent)
-516    }
-517
-518    /// Provide control over streams
-519    #[must_use]
-520    pub fn streams(&mut self) -> Streams<'_> {
-521        Streams {
-522            state: &mut self.streams,
-523            conn_state: &self.state,
-524        }
-525    }
-526
-527    /// Provide control over streams
-528    #[must_use]
-529    pub fn recv_stream(&mut self, id: StreamId) -> RecvStream<'_> {
-530        assert!(id.dir() == Dir::Bi || id.initiator() != self.side.side());
-531        RecvStream {
-532            id,
-533            state: &mut self.streams,
-534            pending: &mut self.spaces[SpaceId::Data].pending,
-535        }
-536    }
-537
-538    /// Provide control over streams
-539    #[must_use]
-540    pub fn send_stream(&mut self, id: StreamId) -> SendStream<'_> {
-541        assert!(id.dir() == Dir::Bi || id.initiator() == self.side.side());
-542        SendStream {
-543            id,
-544            state: &mut self.streams,
-545            pending: &mut self.spaces[SpaceId::Data].pending,
-546            conn_state: &self.state,
-547        }
-548    }
-549
-550    /// Opens a new path only if no path on the same network path currently exists.
-551    ///
-552    /// This comparison will use [`FourTuple::is_probably_same_path`] on the given `network_path`
-553    /// and pass it existing path's network paths.
-554    ///
-555    /// This means that you can pass `local_ip: None` to make the comparison only compare
-556    /// remote addresses.
-557    ///
-558    /// This avoids having to guess which local interface will be used to communicate with the
-559    /// remote, should it not be known yet. We assume that if we already have a path to the remote,
-560    /// the OS is likely to use the same interface to talk to said remote.
-561    ///
-562    /// See also [`open_path`]. Returns `(path_id, true)` if the path already existed. `(path_id,
-563    /// false)` if was opened.
-564    ///
-565    /// [`open_path`]: Connection::open_path
-566    pub fn open_path_ensure(
-567        &mut self,
-568        network_path: FourTuple,
-569        initial_status: PathStatus,
-570        now: Instant,
-571    ) -> Result<(PathId, bool), PathError> {
-572        Ok(
-573            match self
-574                .paths
-575                .iter()
-576                .find(|(_id, path)| network_path.is_probably_same_path(&path.data.network_path))
-577            {
-578                Some((path_id, _state)) => (*path_id, true),
-579                None => (self.open_path(network_path, initial_status, now)?, false),
-580            },
-581        )
-582    }
-583
-584    /// Opens a new path
-585    ///
-586    /// Further errors might occur and they will be emitted in [`PathEvent::LocallyClosed`] events.
-587    /// When the path is opened it will be reported as an [`PathEvent::Opened`].
-588    pub fn open_path(
-589        &mut self,
-590        network_path: FourTuple,
-591        initial_status: PathStatus,
-592        now: Instant,
-593    ) -> Result<PathId, PathError> {
-594        if !self.is_multipath_negotiated() {
-595            return Err(PathError::MultipathNotNegotiated);
-596        }
-597        if self.side().is_server() {
-598            return Err(PathError::ServerSideNotAllowed);
-599        }
-600
-601        let max_abandoned = self.abandoned_paths.iter().max().copied();
-602        let max_used = self.paths.keys().last().copied();
-603        let path_id = max_abandoned
-604            .max(max_used)
-605            .unwrap_or(PathId::ZERO)
-606            .saturating_add(1u8);
-607
-608        if Some(path_id) > self.max_path_id() {
-609            return Err(PathError::MaxPathIdReached);
-610        }
-611        if path_id > self.remote_max_path_id {
-612            self.spaces[SpaceId::Data].pending.paths_blocked = true;
-613            return Err(PathError::MaxPathIdReached);
-614        }
-615        if self.rem_cids.get(&path_id).map(CidQueue::active).is_none() {
-616            self.spaces[SpaceId::Data]
-617                .pending
-618                .path_cids_blocked
-619                .insert(path_id);
-620            return Err(PathError::RemoteCidsExhausted);
-621        }
-622
-623        let path = self.ensure_path(path_id, network_path, now, None);
-624        path.status.local_update(initial_status);
-625
-626        Ok(path_id)
-627    }
-628
-629    /// Closes a path by sending a PATH_ABANDON frame
-630    ///
-631    /// This will not allow closing the last path. It does allow closing paths which have
-632    /// not yet been opened, as e.g. is the case when receiving a PATH_ABANDON from the peer
-633    /// for a path that was never opened locally.
-634    pub fn close_path(
-635        &mut self,
-636        now: Instant,
-637        path_id: PathId,
-638        error_code: VarInt,
-639    ) -> Result<(), ClosePathError> {
-640        if self.abandoned_paths.contains(&path_id)
-641            || Some(path_id) > self.max_path_id()
-642            || !self.paths.contains_key(&path_id)
-643        {
-644            return Err(ClosePathError::ClosedPath);
-645        }
-646        if self
-647            .paths
-648            .iter()
-649            // Would there be any remaining, non-abandoned, validated paths
-650            .any(|(id, path)| {
-651                *id != path_id && !self.abandoned_paths.contains(id) && path.data.validated
-652            })
-653            .not()
-654        {
-655            return Err(ClosePathError::LastOpenPath);
-656        }
-657
-658        // Send PATH_ABANDON
-659        self.spaces[SpaceId::Data]
-660            .pending
-661            .path_abandon
-662            .insert(path_id, error_code.into());
-663
-664        // Remove pending NEW CIDs for this path
-665        let pending_space = &mut self.spaces[SpaceId::Data].pending;
-666        pending_space.new_cids.retain(|cid| cid.path_id != path_id);
-667        pending_space.path_cids_blocked.retain(|&id| id != path_id);
-668        pending_space.path_status.retain(|&id| id != path_id);
-669
-670        // Cleanup retransmits across ALL paths (CIDs for path_id may have been transmitted on other paths)
-671        for space in self.spaces[SpaceId::Data].iter_paths_mut() {
-672            for sent_packet in space.sent_packets.values_mut() {
-673                if let Some(retransmits) = sent_packet.retransmits.get_mut() {
-674                    retransmits.new_cids.retain(|cid| cid.path_id != path_id);
-675                    retransmits.path_cids_blocked.retain(|&id| id != path_id);
-676                    retransmits.path_status.retain(|&id| id != path_id);
-677                }
-678            }
-679        }
-680
-681        // Consider remotely issued CIDs as retired.
-682        // Technically we don't have to do this just yet.  We only need to do this *after*
-683        // the ABANDON_PATH frame is sent, allowing us to still send it on the
-684        // to-be-abandoned path.  However it is recommended to send it on another path, and
-685        // we do not allow abandoning the last path anyway.
-686        self.rem_cids.remove(&path_id);
-687        self.endpoint_events
-688            .push_back(EndpointEventInner::RetireResetToken(path_id));
-689
-690        let pto = self.pto_max_path(SpaceId::Data, false);
-691
-692        let path = self.paths.get_mut(&path_id).expect("checked above");
-693
-694        // We record the time after which receiving data on this path generates a transport error.
-695        path.data.last_allowed_receive = Some(now + 3 * pto);
-696        self.abandoned_paths.insert(path_id);
-697
-698        self.set_max_path_id(now, self.local_max_path_id.saturating_add(1u8));
-699
-700        // The peer MUST respond with a corresponding PATH_ABANDON frame.
-701        // If we receive packets on the abandoned path after 3 * PTO we trigger a transport error.
-702        // In any case, we completely discard the path after 6 * PTO whether we receive a
-703        // PATH_ABANDON or not.
-704        self.timers.set(
-705            Timer::PerPath(path_id, PathTimer::DiscardPath),
-706            now + 6 * pto,
-707            self.qlog.with_time(now),
-708        );
-709        Ok(())
-710    }
-711
-712    /// Gets the [`PathData`] for a known [`PathId`].
-713    ///
-714    /// Will panic if the path_id does not reference any known path.
-715    #[track_caller]
-716    fn path_data(&self, path_id: PathId) -> &PathData {
-717        if let Some(data) = self.paths.get(&path_id) {
-718            &data.data
-719        } else {
-720            panic!(
-721                "unknown path: {path_id}, currently known paths: {:?}",
-722                self.paths.keys().collect::<Vec<_>>()
-723            );
-724        }
-725    }
-726
-727    /// Gets a reference to the [`PathData`] for a [`PathId`]
-728    fn path(&self, path_id: PathId) -> Option<&PathData> {
-729        self.paths.get(&path_id).map(|path_state| &path_state.data)
-730    }
-731
-732    /// Gets a mutable reference to the [`PathData`] for a [`PathId`]
-733    fn path_mut(&mut self, path_id: PathId) -> Option<&mut PathData> {
-734        self.paths
-735            .get_mut(&path_id)
-736            .map(|path_state| &mut path_state.data)
-737    }
-738
-739    /// Returns all known paths.
-740    ///
-741    /// There is no guarantee any of these paths are open or usable.
-742    pub fn paths(&self) -> Vec<PathId> {
-743        self.paths.keys().copied().collect()
-744    }
-745
-746    /// Gets the local [`PathStatus`] for a known [`PathId`]
-747    pub fn path_status(&self, path_id: PathId) -> Result<PathStatus, ClosedPath> {
-748        self.path(path_id)
-749            .map(PathData::local_status)
-750            .ok_or(ClosedPath { _private: () })
-751    }
-752
-753    /// Returns the path's network path represented as a 4-tuple.
-754    pub fn network_path(&self, path_id: PathId) -> Result<FourTuple, ClosedPath> {
-755        self.path(path_id)
-756            .map(|path| path.network_path)
-757            .ok_or(ClosedPath { _private: () })
-758    }
-759
-760    /// Sets the [`PathStatus`] for a known [`PathId`]
-761    ///
-762    /// Returns the previous path status on success.
-763    pub fn set_path_status(
-764        &mut self,
-765        path_id: PathId,
-766        status: PathStatus,
-767    ) -> Result<PathStatus, SetPathStatusError> {
-768        if !self.is_multipath_negotiated() {
-769            return Err(SetPathStatusError::MultipathNotNegotiated);
-770        }
-771        let path = self
-772            .path_mut(path_id)
-773            .ok_or(SetPathStatusError::ClosedPath)?;
-774        let prev = match path.status.local_update(status) {
-775            Some(prev) => {
-776                self.spaces[SpaceId::Data]
-777                    .pending
-778                    .path_status
-779                    .insert(path_id);
-780                prev
-781            }
-782            None => path.local_status(),
-783        };
-784        Ok(prev)
-785    }
-786
-787    /// Returns the remote path status
-788    // TODO(flub): Probably should also be some kind of path event?  Not even sure if I like
-789    //    this as an API, but for now it allows me to write a test easily.
-790    // TODO(flub): Technically this should be a Result<Option<PathSTatus>>?
-791    pub fn remote_path_status(&self, path_id: PathId) -> Option<PathStatus> {
-792        self.path(path_id).and_then(|path| path.remote_status())
-793    }
-794
-795    /// Sets the max_idle_timeout for a specific path
-796    ///
-797    /// See [`TransportConfig::default_path_max_idle_timeout`] for details.
-798    ///
-799    /// Returns the previous value of the setting.
-800    pub fn set_path_max_idle_timeout(
-801        &mut self,
-802        path_id: PathId,
-803        timeout: Option<Duration>,
-804    ) -> Result<Option<Duration>, ClosedPath> {
-805        let path = self
-806            .paths
-807            .get_mut(&path_id)
-808            .ok_or(ClosedPath { _private: () })?;
-809        Ok(std::mem::replace(&mut path.data.idle_timeout, timeout))
-810    }
-811
-812    /// Sets the keep_alive_interval for a specific path
-813    ///
-814    /// See [`TransportConfig::default_path_keep_alive_interval`] for details.
-815    ///
-816    /// Returns the previous value of the setting.
-817    pub fn set_path_keep_alive_interval(
-818        &mut self,
-819        path_id: PathId,
-820        interval: Option<Duration>,
-821    ) -> Result<Option<Duration>, ClosedPath> {
-822        let path = self
-823            .paths
-824            .get_mut(&path_id)
-825            .ok_or(ClosedPath { _private: () })?;
-826        Ok(std::mem::replace(&mut path.data.keep_alive, interval))
-827    }
-828
-829    /// Gets the [`PathData`] for a known [`PathId`].
-830    ///
-831    /// Will panic if the path_id does not reference any known path.
-832    #[track_caller]
-833    fn path_data_mut(&mut self, path_id: PathId) -> &mut PathData {
-834        &mut self.paths.get_mut(&path_id).expect("known path").data
-835    }
-836
-837    /// Find an open, validated path that's on the same network path as the given network path.
-838    ///
-839    /// Returns the first path matching, even if there's multiple.
-840    fn find_validated_path_on_network_path(
-841        &self,
-842        network_path: FourTuple,
-843    ) -> Option<(&PathId, &PathState)> {
-844        self.paths.iter().find(|(path_id, path_state)| {
-845            path_state.data.validated
-846                // Would this use the same network path, if network_path were used to send right now?
-847                && network_path.is_probably_same_path(&path_state.data.network_path)
-848                && !self.abandoned_paths.contains(path_id)
-849        })
-850        // TODO(@divma): we might want to ensure the path has been recently active to consider the
-851        // address validated
-852        // matheus23: Perhaps looking at !self.abandoned_paths.contains(path_id) is enough, given keep-alives?
-853    }
-854
-855    fn ensure_path(
-856        &mut self,
-857        path_id: PathId,
-858        network_path: FourTuple,
-859        now: Instant,
-860        pn: Option<u64>,
-861    ) -> &mut PathData {
-862        let valid_path = self.find_validated_path_on_network_path(network_path);
-863        let validated = valid_path.is_some();
-864        let initial_rtt = valid_path.map(|(_, path)| path.data.rtt.conservative());
-865        let vacant_entry = match self.paths.entry(path_id) {
-866            btree_map::Entry::Vacant(vacant_entry) => vacant_entry,
-867            btree_map::Entry::Occupied(occupied_entry) => {
-868                return &mut occupied_entry.into_mut().data;
-869            }
-870        };
-871
-872        debug!(%validated, %path_id, %network_path, "path added");
-873        let peer_max_udp_payload_size =
-874            u16::try_from(self.peer_params.max_udp_payload_size.into_inner()).unwrap_or(u16::MAX);
-875        self.path_generation_counter = self.path_generation_counter.wrapping_add(1);
-876        let mut data = PathData::new(
-877            network_path,
-878            self.allow_mtud,
-879            Some(peer_max_udp_payload_size),
-880            self.path_generation_counter,
-881            now,
-882            &self.config,
-883        );
-884
-885        data.validated = validated;
-886        if let Some(initial_rtt) = initial_rtt {
-887            data.rtt.reset_initial_rtt(initial_rtt);
-888        }
-889
-890        let pto = self.ack_frequency.max_ack_delay_for_pto() + data.rtt.pto_base();
-891        self.timers.set(
-892            Timer::PerPath(path_id, PathTimer::PathOpen),
-893            now + 3 * pto,
-894            self.qlog.with_time(now),
-895        );
-896
-897        // for the path to be opened we need to send a packet on the path. Sending a challenge
-898        // guarantees this
-899        data.send_new_challenge = true;
-900
-901        let path = vacant_entry.insert(PathState { data, prev: None });
-902
-903        let mut pn_space = spaces::PacketNumberSpace::new(now, SpaceId::Data, &mut self.rng);
-904        if let Some(pn) = pn {
-905            pn_space.dedup.insert(pn);
-906        }
-907        self.spaces[SpaceId::Data]
-908            .number_spaces
-909            .insert(path_id, pn_space);
-910        self.qlog.emit_tuple_assigned(path_id, network_path, now);
-911        &mut path.data
-912    }
-913
-914    /// Returns packets to transmit
-915    ///
-916    /// Connections should be polled for transmit after:
-917    /// - the application performed some I/O on the connection
-918    /// - a call was made to `handle_event`
-919    /// - a call was made to `handle_timeout`
-920    ///
-921    /// `max_datagrams` specifies how many datagrams can be returned inside a
-922    /// single Transmit using GSO. This must be at least 1.
-923    #[must_use]
-924    pub fn poll_transmit(
-925        &mut self,
-926        now: Instant,
-927        max_datagrams: NonZeroUsize,
-928        buf: &mut Vec<u8>,
-929    ) -> Option<Transmit> {
-930        if let Some(probing) = self
-931            .iroh_hp
-932            .server_side_mut()
-933            .ok()
-934            .and_then(iroh_hp::ServerState::next_probe)
-935        {
-936            let destination = probing.remote();
-937            trace!(%destination, "RAND_DATA packet");
-938            let token: u64 = self.rng.random();
-939            buf.put_u64(token);
-940            probing.finish(token);
-941            return Some(Transmit {
-942                destination,
-943                ecn: None,
-944                size: 8,
-945                segment_size: None,
-946                src_ip: None,
-947            });
-948        }
-949
-950        let max_datagrams = match self.config.enable_segmentation_offload {
-951            false => NonZeroUsize::MIN,
-952            true => max_datagrams,
-953        };
-954
-955        // Each call to poll_transmit can only send datagrams to one destination, because
-956        // all datagrams in a GSO batch are for the same destination.  Therefore only
-957        // datagrams for one Path ID are produced for each poll_transmit call.
-958
-959        // TODO(flub): this is wishful thinking and not actually implemented, but perhaps it
-960        //   should be:
-961
-962        // First, if we have to send a close, select a path for that.
-963        // Next, all paths that have a PATH_CHALLENGE or PATH_RESPONSE pending.
-964
-965        // For all, open, validated and AVAILABLE paths:
-966        // - Is the path congestion blocked or pacing blocked?
-967        // - call maybe_queue_ to ensure a tail-loss probe would be sent?
-968        // - do we need to send a close message?
-969        // - call can_send
-970        // Once there's nothing more to send on the AVAILABLE paths, do the same for BACKUP paths
-971
-972        // Check whether we need to send a close message
-973        let close = match self.state.as_type() {
-974            StateType::Drained => {
-975                self.app_limited = true;
-976                return None;
-977            }
-978            StateType::Draining | StateType::Closed => {
-979                // self.close is only reset once the associated packet had been
-980                // encoded successfully
-981                if !self.close {
-982                    self.app_limited = true;
-983                    return None;
-984                }
-985                true
-986            }
-987            _ => false,
-988        };
-989
-990        // Check whether we need to send an ACK_FREQUENCY frame
-991        if let Some(config) = &self.config.ack_frequency_config {
-992            let rtt = self
-993                .paths
-994                .values()
-995                .map(|p| p.data.rtt.get())
-996                .min()
-997                .expect("one path exists");
-998            self.spaces[SpaceId::Data].pending.ack_frequency = self
-999                .ack_frequency
-1000                .should_send_ack_frequency(rtt, config, &self.peer_params)
-1001                && self.highest_space == SpaceId::Data
-1002                && self.peer_supports_ack_frequency();
-1003        }
-1004
-1005        // Whether this packet can be coalesced with another one in the same datagram.
-1006        let mut coalesce = true;
-1007
-1008        // Whether the last packet in the datagram must be padded so the datagram takes up
-1009        // to at least MIN_INITIAL_SIZE, or to the maximum segment size if this is smaller.
-1010        let mut pad_datagram = PadDatagram::No;
-1011
-1012        // Whether congestion control stopped the next packet from being sent. Further
-1013        // packets could still be built, as e.g. tail-loss probes are not congestion
-1014        // limited.
-1015        let mut congestion_blocked = false;
-1016
-1017        // The packet number of the last built packet.
-1018        let mut last_packet_number = None;
-1019
-1020        let mut path_id = *self.paths.first_key_value().expect("one path must exist").0;
-1021
-1022        // If there is any open, validated and available path we only want to send frames to
-1023        // any backup path that must be sent on that backup path exclusively.
-1024        let have_available_path = self.paths.iter().any(|(id, path)| {
-1025            path.data.validated
-1026                && path.data.local_status() == PathStatus::Available
-1027                && self.rem_cids.contains_key(id)
-1028        });
-1029
-1030        // Setup for the first path_id
-1031        let mut transmit = TransmitBuf::new(
-1032            buf,
-1033            max_datagrams,
-1034            self.path_data(path_id).current_mtu().into(),
-1035        );
-1036        if let Some(challenge) = self.send_prev_path_challenge(now, &mut transmit, path_id) {
-1037            return Some(challenge);
-1038        }
-1039        let mut space_id = match path_id {
-1040            PathId::ZERO => SpaceId::Initial,
-1041            _ => SpaceId::Data,
-1042        };
-1043
-1044        loop {
-1045            // check if there is at least one active CID to use for sending
-1046            let Some(remote_cid) = self.rem_cids.get(&path_id).map(CidQueue::active) else {
-1047                let err = PathError::RemoteCidsExhausted;
-1048                if !self.abandoned_paths.contains(&path_id) {
-1049                    debug!(?err, %path_id, "no active CID for path");
-1050                    self.events.push_back(Event::Path(PathEvent::LocallyClosed {
-1051                        id: path_id,
-1052                        error: err,
-1053                    }));
-1054                    // Locally we should have refused to open this path, the remote should
-1055                    // have given us CIDs for this path before opening it.  So we can always
-1056                    // abandon this here.
-1057                    self.close_path(
-1058                        now,
-1059                        path_id,
-1060                        TransportErrorCode::NO_CID_AVAILABLE_FOR_PATH.into(),
-1061                    )
-1062                    .ok();
-1063                    self.spaces[SpaceId::Data]
-1064                        .pending
-1065                        .path_cids_blocked
-1066                        .insert(path_id);
-1067                } else {
-1068                    trace!(%path_id, "remote CIDs retired for abandoned path");
-1069                }
-1070
-1071                match self.paths.keys().find(|&&next| next > path_id) {
-1072                    Some(next_path_id) => {
-1073                        // See if this next path can send anything.
-1074                        path_id = *next_path_id;
-1075                        space_id = SpaceId::Data;
-1076
-1077                        // update per path state
-1078                        transmit.set_segment_size(self.path_data(path_id).current_mtu().into());
-1079                        if let Some(challenge) =
-1080                            self.send_prev_path_challenge(now, &mut transmit, path_id)
-1081                        {
-1082                            return Some(challenge);
-1083                        }
-1084
-1085                        continue;
-1086                    }
-1087                    None => {
-1088                        // Nothing more to send.
-1089                        trace!(
-1090                            ?space_id,
-1091                            %path_id,
-1092                            "no CIDs to send on path, no more paths"
-1093                        );
-1094                        break;
-1095                    }
-1096                }
-1097            };
-1098
-1099            // Determine if anything can be sent in this packet number space (SpaceId +
-1100            // PathId).
-1101            let max_packet_size = if transmit.datagram_remaining_mut() > 0 {
-1102                // We are trying to coalesce another packet into this datagram.
-1103                transmit.datagram_remaining_mut()
-1104            } else {
-1105                // A new datagram needs to be started.
-1106                transmit.segment_size()
-1107            };
-1108            let can_send = self.space_can_send(space_id, path_id, max_packet_size, close);
-1109            let path_should_send = {
-1110                let path_exclusive_only = space_id == SpaceId::Data
-1111                    && have_available_path
-1112                    && self.path_data(path_id).local_status() == PathStatus::Backup;
-1113                let path_should_send = if path_exclusive_only {
-1114                    can_send.path_exclusive
-1115                } else {
-1116                    !can_send.is_empty()
-1117                };
-1118                let needs_loss_probe = self.spaces[space_id].for_path(path_id).loss_probes > 0;
-1119                path_should_send || needs_loss_probe
-1120            };
-1121
-1122            if !path_should_send && space_id < SpaceId::Data {
-1123                if self.spaces[space_id].crypto.is_some() {
-1124                    trace!(?space_id, %path_id, "nothing to send in space");
-1125                }
-1126                space_id = space_id.next();
-1127                continue;
-1128            }
-1129
-1130            let send_blocked = if path_should_send && transmit.datagram_remaining_mut() == 0 {
-1131                // Only check congestion control if a new datagram is needed.
-1132                self.path_congestion_check(space_id, path_id, &transmit, &can_send, now)
-1133            } else {
-1134                PathBlocked::No
-1135            };
-1136            if send_blocked != PathBlocked::No {
-1137                trace!(?space_id, %path_id, ?send_blocked, "congestion blocked");
-1138                congestion_blocked = true;
-1139            }
-1140            if send_blocked != PathBlocked::No && space_id < SpaceId::Data {
-1141                // Higher spaces might still have tail-loss probes to send, which are not
-1142                // congestion blocked.
-1143                space_id = space_id.next();
-1144                continue;
-1145            }
-1146            if !path_should_send || send_blocked != PathBlocked::No {
-1147                // Nothing more to send on this path, check the next path if possible.
-1148
-1149                // If there are any datagrams in the transmit, packets for another path can
-1150                // not be built.
-1151                if transmit.num_datagrams() > 0 {
-1152                    break;
-1153                }
-1154
-1155                match self.paths.keys().find(|&&next| next > path_id) {
-1156                    Some(next_path_id) => {
-1157                        // See if this next path can send anything.
-1158                        trace!(
-1159                            ?space_id,
-1160                            %path_id,
-1161                            %next_path_id,
-1162                            "nothing to send on path"
-1163                        );
-1164                        path_id = *next_path_id;
-1165                        space_id = SpaceId::Data;
-1166
-1167                        // update per path state
-1168                        transmit.set_segment_size(self.path_data(path_id).current_mtu().into());
-1169                        if let Some(challenge) =
-1170                            self.send_prev_path_challenge(now, &mut transmit, path_id)
-1171                        {
-1172                            return Some(challenge);
-1173                        }
-1174
-1175                        continue;
-1176                    }
-1177                    None => {
-1178                        // Nothing more to send.
-1179                        trace!(
-1180                            ?space_id,
-1181                            %path_id,
-1182                            next_path_id=?None::<PathId>,
-1183                            "nothing to send on path"
-1184                        );
-1185                        break;
-1186                    }
-1187                }
-1188            }
-1189
-1190            // If the datagram is full, we need to start a new one.
-1191            if transmit.datagram_remaining_mut() == 0 {
-1192                if transmit.num_datagrams() >= transmit.max_datagrams().get() {
-1193                    // No more datagrams allowed
-1194                    break;
-1195                }
-1196
-1197                match self.spaces[space_id].for_path(path_id).loss_probes {
-1198                    0 => transmit.start_new_datagram(),
-1199                    _ => {
-1200                        // We need something to send for a tail-loss probe.
-1201                        let request_immediate_ack =
-1202                            space_id == SpaceId::Data && self.peer_supports_ack_frequency();
-1203                        self.spaces[space_id].maybe_queue_probe(
-1204                            path_id,
-1205                            request_immediate_ack,
-1206                            &self.streams,
-1207                        );
-1208
-1209                        self.spaces[space_id].for_path(path_id).loss_probes -= 1;
-1210
-1211                        // Clamp the datagram to at most the minimum MTU to ensure that loss
-1212                        // probes can get through and enable recovery even if the path MTU
-1213                        // has shrank unexpectedly.
-1214                        transmit.start_new_datagram_with_size(std::cmp::min(
-1215                            usize::from(INITIAL_MTU),
-1216                            transmit.segment_size(),
-1217                        ));
-1218                    }
-1219                }
-1220                trace!(count = transmit.num_datagrams(), "new datagram started");
-1221                coalesce = true;
-1222                pad_datagram = PadDatagram::No;
-1223            }
-1224
-1225            // If coalescing another packet into the existing datagram, there should
-1226            // still be enough space for a whole packet.
-1227            if transmit.datagram_start_offset() < transmit.len() {
-1228                debug_assert!(transmit.datagram_remaining_mut() >= MIN_PACKET_SPACE);
-1229            }
-1230
-1231            //
-1232            // From here on, we've determined that a packet will definitely be sent.
-1233            //
-1234
-1235            if self.spaces[SpaceId::Initial].crypto.is_some()
-1236                && space_id == SpaceId::Handshake
-1237                && self.side.is_client()
-1238            {
-1239                // A client stops both sending and processing Initial packets when it
-1240                // sends its first Handshake packet.
-1241                self.discard_space(now, SpaceId::Initial);
-1242            }
-1243            if let Some(ref mut prev) = self.prev_crypto {
-1244                prev.update_unacked = false;
-1245            }
-1246
-1247            let mut qlog = QlogSentPacket::default();
-1248            let mut builder = PacketBuilder::new(
-1249                now,
-1250                space_id,
-1251                path_id,
-1252                remote_cid,
-1253                &mut transmit,
-1254                can_send.other,
-1255                self,
-1256                &mut qlog,
-1257            )?;
-1258            last_packet_number = Some(builder.exact_number);
-1259            coalesce = coalesce && !builder.short_header;
-1260
-1261            if space_id == SpaceId::Initial && (self.side.is_client() || can_send.other) {
-1262                // https://www.rfc-editor.org/rfc/rfc9000.html#section-14.1
-1263                pad_datagram |= PadDatagram::ToMinMtu;
+26    config::{ServerConfig, TransportConfig},
+27    congestion::Controller,
+28    connection::{
+29        qlog::{QlogRecvPacket, QlogSink},
+30        spaces::LostPacket,
+31        timer::{ConnTimer, PathTimer},
+32    },
+33    crypto::{self, KeyPair, Keys, PacketKey},
+34    frame::{self, Close, Datagram, FrameStruct, NewToken, ObservedAddr},
+35    iroh_hp,
+36    packet::{
+37        FixedLengthConnectionIdParser, Header, InitialHeader, InitialPacket, LongType, Packet,
+38        PacketNumber, PartialDecode, SpaceId,
+39    },
+40    range_set::ArrayRangeSet,
+41    shared::{
+42        ConnectionEvent, ConnectionEventInner, ConnectionId, DatagramConnectionEvent, EcnCodepoint,
+43        EndpointEvent, EndpointEventInner,
+44    },
+45    token::{ResetToken, Token, TokenPayload},
+46    transport_parameters::TransportParameters,
+47};
+48
+49mod ack_frequency;
+50use ack_frequency::AckFrequencyState;
+51
+52mod assembler;
+53pub use assembler::Chunk;
+54
+55mod cid_state;
+56use cid_state::CidState;
+57
+58mod datagrams;
+59use datagrams::DatagramState;
+60pub use datagrams::{Datagrams, SendDatagramError};
+61
+62mod mtud;
+63mod pacing;
+64
+65mod packet_builder;
+66use packet_builder::{PacketBuilder, PadDatagram};
+67
+68mod packet_crypto;
+69use packet_crypto::{PrevCrypto, ZeroRttCrypto};
+70
+71mod paths;
+72pub use paths::{ClosedPath, PathEvent, PathId, PathStatus, RttEstimator, SetPathStatusError};
+73use paths::{PathData, PathState};
+74
+75pub(crate) mod qlog;
+76pub(crate) mod send_buffer;
+77
+78mod spaces;
+79#[cfg(fuzzing)]
+80pub use spaces::Retransmits;
+81#[cfg(not(fuzzing))]
+82use spaces::Retransmits;
+83use spaces::{PacketSpace, SendableFrames, SentPacket, ThinRetransmits};
+84
+85mod stats;
+86pub use stats::{ConnectionStats, FrameStats, PathStats, UdpStats};
+87
+88mod streams;
+89#[cfg(fuzzing)]
+90pub use streams::StreamsState;
+91#[cfg(not(fuzzing))]
+92use streams::StreamsState;
+93pub use streams::{
+94    Chunks, ClosedStream, FinishError, ReadError, ReadableError, RecvStream, SendStream,
+95    ShouldTransmit, StreamEvent, Streams, WriteError, Written,
+96};
+97
+98mod timer;
+99use timer::{Timer, TimerTable};
+100
+101mod transmit_buf;
+102use transmit_buf::TransmitBuf;
+103
+104mod state;
+105
+106#[cfg(not(fuzzing))]
+107use state::State;
+108#[cfg(fuzzing)]
+109pub use state::State;
+110use state::StateType;
+111
+112/// Protocol state and logic for a single QUIC connection
+113///
+114/// Objects of this type receive [`ConnectionEvent`]s and emit [`EndpointEvent`]s and application
+115/// [`Event`]s to make progress. To handle timeouts, a `Connection` returns timer updates and
+116/// expects timeouts through various methods. A number of simple getter methods are exposed
+117/// to allow callers to inspect some of the connection state.
+118///
+119/// `Connection` has roughly 4 types of methods:
+120///
+121/// - A. Simple getters, taking `&self`
+122/// - B. Handlers for incoming events from the network or system, named `handle_*`.
+123/// - C. State machine mutators, for incoming commands from the application. For convenience we
+124///   refer to this as "performing I/O" below, however as per the design of this library none of the
+125///   functions actually perform system-level I/O. For example, [`read`](RecvStream::read) and
+126///   [`write`](SendStream::write), but also things like [`reset`](SendStream::reset).
+127/// - D. Polling functions for outgoing events or actions for the caller to
+128///   take, named `poll_*`.
+129///
+130/// The simplest way to use this API correctly is to call (B) and (C) whenever
+131/// appropriate, then after each of those calls, as soon as feasible call all
+132/// polling methods (D) and deal with their outputs appropriately, e.g. by
+133/// passing it to the application or by making a system-level I/O call. You
+134/// should call the polling functions in this order:
+135///
+136/// 1. [`poll_transmit`](Self::poll_transmit)
+137/// 2. [`poll_timeout`](Self::poll_timeout)
+138/// 3. [`poll_endpoint_events`](Self::poll_endpoint_events)
+139/// 4. [`poll`](Self::poll)
+140///
+141/// Currently the only actual dependency is from (2) to (1), however additional
+142/// dependencies may be added in future, so the above order is recommended.
+143///
+144/// (A) may be called whenever desired.
+145///
+146/// Care should be made to ensure that the input events represent monotonically
+147/// increasing time. Specifically, calling [`handle_timeout`](Self::handle_timeout)
+148/// with events of the same [`Instant`] may be interleaved in any order with a
+149/// call to [`handle_event`](Self::handle_event) at that same instant; however
+150/// events or timeouts with different instants must not be interleaved.
+151pub struct Connection {
+152    endpoint_config: Arc<EndpointConfig>,
+153    config: Arc<TransportConfig>,
+154    rng: StdRng,
+155    crypto: Box<dyn crypto::Session>,
+156    /// The CID we initially chose, for use during the handshake
+157    handshake_cid: ConnectionId,
+158    /// The CID the peer initially chose, for use during the handshake
+159    rem_handshake_cid: ConnectionId,
+160    /// The [`PathData`] for each path
+161    ///
+162    /// This needs to be ordered because [`Connection::poll_transmit`] needs to
+163    /// deterministically select the next PathId to send on.
+164    // TODO(flub): well does it really? But deterministic is nice for now.
+165    paths: BTreeMap<PathId, PathState>,
+166    /// Counter to uniquely identify every [`PathData`] created in this connection.
+167    ///
+168    /// Each [`PathData`] gets a [`PathData::generation`] that is unique among all
+169    /// [`PathData`]s created in the lifetime of this connection. This helps identify the
+170    /// correct path when RFC9000-style migrations happen, even when they are
+171    /// aborted.
+172    ///
+173    /// Multipath does not change this, each path can also undergo RFC9000-style
+174    /// migrations. So a single multipath path ID could see several [`PathData`]s each with
+175    /// their unique [`PathData::generation].
+176    path_generation_counter: u64,
+177    /// Whether MTU detection is supported in this environment
+178    allow_mtud: bool,
+179    state: State,
+180    side: ConnectionSide,
+181    /// Whether or not 0-RTT was enabled during the handshake. Does not imply acceptance.
+182    zero_rtt_enabled: bool,
+183    /// Set if 0-RTT is supported, then cleared when no longer needed.
+184    zero_rtt_crypto: Option<ZeroRttCrypto>,
+185    key_phase: bool,
+186    /// How many packets are in the current key phase. Used only for `Data` space.
+187    key_phase_size: u64,
+188    /// Transport parameters set by the peer
+189    peer_params: TransportParameters,
+190    /// Source ConnectionId of the first packet received from the peer
+191    orig_rem_cid: ConnectionId,
+192    /// Destination ConnectionId sent by the client on the first Initial
+193    initial_dst_cid: ConnectionId,
+194    /// The value that the server included in the Source Connection ID field of a Retry packet, if
+195    /// one was received
+196    retry_src_cid: Option<ConnectionId>,
+197    /// Events returned by [`Connection::poll`]
+198    events: VecDeque<Event>,
+199    endpoint_events: VecDeque<EndpointEventInner>,
+200    /// Whether the spin bit is in use for this connection
+201    spin_enabled: bool,
+202    /// Outgoing spin bit state
+203    spin: bool,
+204    /// Packet number spaces: initial, handshake, 1-RTT
+205    spaces: [PacketSpace; 3],
+206    /// Highest usable [`SpaceId`]
+207    highest_space: SpaceId,
+208    /// 1-RTT keys used prior to a key update
+209    prev_crypto: Option<PrevCrypto>,
+210    /// 1-RTT keys to be used for the next key update
+211    ///
+212    /// These are generated in advance to prevent timing attacks and/or DoS by third-party attackers
+213    /// spoofing key updates.
+214    next_crypto: Option<KeyPair<Box<dyn PacketKey>>>,
+215    accepted_0rtt: bool,
+216    /// Whether the idle timer should be reset the next time an ack-eliciting packet is transmitted.
+217    permit_idle_reset: bool,
+218    /// Negotiated idle timeout
+219    idle_timeout: Option<Duration>,
+220    timers: TimerTable,
+221    /// Number of packets received which could not be authenticated
+222    authentication_failures: u64,
+223
+224    //
+225    // Queued non-retransmittable 1-RTT data
+226    //
+227    /// If the CONNECTION_CLOSE frame needs to be sent
+228    close: bool,
+229
+230    //
+231    // ACK frequency
+232    //
+233    ack_frequency: AckFrequencyState,
+234
+235    //
+236    // Congestion Control
+237    //
+238    /// Whether the most recently received packet had an ECN codepoint set
+239    receiving_ecn: bool,
+240    /// Number of packets authenticated
+241    total_authed_packets: u64,
+242    /// Whether the last `poll_transmit` call yielded no data because there was
+243    /// no outgoing application data.
+244    app_limited: bool,
+245
+246    //
+247    // ObservedAddr
+248    //
+249    /// Sequence number for the next observed address frame sent to the peer.
+250    next_observed_addr_seq_no: VarInt,
+251
+252    streams: StreamsState,
+253    /// Surplus remote CIDs for future use on new paths
+254    ///
+255    /// These are given out before multiple paths exist, also for paths that will never
+256    /// exist.  So if multipath is supported the number of paths here will be higher than
+257    /// the actual number of paths in use.
+258    rem_cids: FxHashMap<PathId, CidQueue>,
+259    /// Attributes of CIDs generated by local endpoint
+260    ///
+261    /// Any path that is allowed to be opened is present in this map, as well as the already
+262    /// opened paths. However since CIDs are issued async by the endpoint driver via
+263    /// connection events it can not be used to know if CIDs have been issued for a path or
+264    /// not. See [`Connection::max_path_id_with_cids`] for this.
+265    local_cid_state: FxHashMap<PathId, CidState>,
+266    /// State of the unreliable datagram extension
+267    datagrams: DatagramState,
+268    /// Connection level statistics
+269    stats: ConnectionStats,
+270    /// Path level statistics
+271    path_stats: FxHashMap<PathId, PathStats>,
+272    /// QUIC version used for the connection.
+273    version: u32,
+274
+275    //
+276    // Multipath
+277    //
+278    /// Maximum number of concurrent paths
+279    ///
+280    /// Initially set from the [`TransportConfig::max_concurrent_multipath_paths`]. Even
+281    /// when multipath is disabled this will be set to 1, it is not used in that case
+282    /// though.
+283    max_concurrent_paths: NonZeroU32,
+284    /// Local maximum [`PathId`] to be used
+285    ///
+286    /// This is initially set to [`TransportConfig::get_initial_max_path_id`] when multipath
+287    /// is negotiated, or to [`PathId::ZERO`] otherwise. This is essentially the value of
+288    /// the highest MAX_PATH_ID frame sent.
+289    ///
+290    /// Any path with an ID equal or below this [`PathId`] is either:
+291    ///
+292    /// - Abandoned, if it is also in [`Connection::abandoned_paths`].
+293    /// - Open, in this case it is present in [`Connection::paths`]
+294    /// - Not yet opened, if it is in neither of these two places.
+295    ///
+296    /// Note that for not-yet-open there may or may not be any CIDs issued. See
+297    /// [`Connection::max_path_id_with_cids`].
+298    local_max_path_id: PathId,
+299    /// Remote's maximum [`PathId`] to be used
+300    ///
+301    /// This is initially set to the peer's [`TransportParameters::initial_max_path_id`] when
+302    /// multipath is negotiated, or to [`PathId::ZERO`] otherwise. A peer may increase this limit
+303    /// by sending [`Frame::MaxPathId`] frames.
+304    remote_max_path_id: PathId,
+305    /// The greatest [`PathId`] we have issued CIDs for
+306    ///
+307    /// CIDs are only issued for `min(local_max_path_id, remote_max_path_id)`. It is not
+308    /// possible to use [`Connection::local_cid_state`] to know if CIDs have been issued
+309    /// since they are issued asynchronously by the endpoint driver.
+310    max_path_id_with_cids: PathId,
+311    /// The paths already abandoned
+312    ///
+313    /// They may still have some state left in [`Connection::paths`] or
+314    /// [`Connection::local_cid_state`] since some of this has to be kept around for some
+315    /// time after a path is abandoned.
+316    // TODO(flub): Make this a more efficient data structure.  Like ranges of abandoned
+317    //    paths.  Or a set together with a minimum.  Or something.
+318    abandoned_paths: FxHashSet<PathId>,
+319
+320    iroh_hp: iroh_hp::State,
+321    qlog: QlogSink,
+322}
+323
+324impl Connection {
+325    pub(crate) fn new(
+326        endpoint_config: Arc<EndpointConfig>,
+327        config: Arc<TransportConfig>,
+328        init_cid: ConnectionId,
+329        loc_cid: ConnectionId,
+330        rem_cid: ConnectionId,
+331        network_path: FourTuple,
+332        crypto: Box<dyn crypto::Session>,
+333        cid_gen: &dyn ConnectionIdGenerator,
+334        now: Instant,
+335        version: u32,
+336        allow_mtud: bool,
+337        rng_seed: [u8; 32],
+338        side_args: SideArgs,
+339        qlog: QlogSink,
+340    ) -> Self {
+341        let pref_addr_cid = side_args.pref_addr_cid();
+342        let path_validated = side_args.path_validated();
+343        let connection_side = ConnectionSide::from(side_args);
+344        let side = connection_side.side();
+345        let mut rng = StdRng::from_seed(rng_seed);
+346        let initial_space = {
+347            let mut space = PacketSpace::new(now, SpaceId::Initial, &mut rng);
+348            space.crypto = Some(crypto.initial_keys(init_cid, side));
+349            space
+350        };
+351        let handshake_space = PacketSpace::new(now, SpaceId::Handshake, &mut rng);
+352        #[cfg(test)]
+353        let data_space = match config.deterministic_packet_numbers {
+354            true => PacketSpace::new_deterministic(now, SpaceId::Data),
+355            false => PacketSpace::new(now, SpaceId::Data, &mut rng),
+356        };
+357        #[cfg(not(test))]
+358        let data_space = PacketSpace::new(now, SpaceId::Data, &mut rng);
+359        let state = State::handshake(state::Handshake {
+360            rem_cid_set: side.is_server(),
+361            expected_token: Bytes::new(),
+362            client_hello: None,
+363            allow_server_migration: side.is_client(),
+364        });
+365        let local_cid_state = FxHashMap::from_iter([(
+366            PathId::ZERO,
+367            CidState::new(
+368                cid_gen.cid_len(),
+369                cid_gen.cid_lifetime(),
+370                now,
+371                if pref_addr_cid.is_some() { 2 } else { 1 },
+372            ),
+373        )]);
+374
+375        let mut path = PathData::new(network_path, allow_mtud, None, 0, now, &config);
+376        // TODO(@divma): consider if we want to delay this until the path is validated
+377        path.open = true;
+378        let mut this = Self {
+379            endpoint_config,
+380            crypto,
+381            handshake_cid: loc_cid,
+382            rem_handshake_cid: rem_cid,
+383            local_cid_state,
+384            paths: BTreeMap::from_iter([(
+385                PathId::ZERO,
+386                PathState {
+387                    data: path,
+388                    prev: None,
+389                },
+390            )]),
+391            path_generation_counter: 0,
+392            allow_mtud,
+393            state,
+394            side: connection_side,
+395            zero_rtt_enabled: false,
+396            zero_rtt_crypto: None,
+397            key_phase: false,
+398            // A small initial key phase size ensures peers that don't handle key updates correctly
+399            // fail sooner rather than later. It's okay for both peers to do this, as the first one
+400            // to perform an update will reset the other's key phase size in `update_keys`, and a
+401            // simultaneous key update by both is just like a regular key update with a really fast
+402            // response. Inspired by quic-go's similar behavior of performing the first key update
+403            // at the 100th short-header packet.
+404            key_phase_size: rng.random_range(10..1000),
+405            peer_params: TransportParameters::default(),
+406            orig_rem_cid: rem_cid,
+407            initial_dst_cid: init_cid,
+408            retry_src_cid: None,
+409            events: VecDeque::new(),
+410            endpoint_events: VecDeque::new(),
+411            spin_enabled: config.allow_spin && rng.random_ratio(7, 8),
+412            spin: false,
+413            spaces: [initial_space, handshake_space, data_space],
+414            highest_space: SpaceId::Initial,
+415            prev_crypto: None,
+416            next_crypto: None,
+417            accepted_0rtt: false,
+418            permit_idle_reset: true,
+419            idle_timeout: match config.max_idle_timeout {
+420                None | Some(VarInt(0)) => None,
+421                Some(dur) => Some(Duration::from_millis(dur.0)),
+422            },
+423            timers: TimerTable::default(),
+424            authentication_failures: 0,
+425            close: false,
+426
+427            ack_frequency: AckFrequencyState::new(get_max_ack_delay(
+428                &TransportParameters::default(),
+429            )),
+430
+431            app_limited: false,
+432            receiving_ecn: false,
+433            total_authed_packets: 0,
+434
+435            next_observed_addr_seq_no: 0u32.into(),
+436
+437            streams: StreamsState::new(
+438                side,
+439                config.max_concurrent_uni_streams,
+440                config.max_concurrent_bidi_streams,
+441                config.send_window,
+442                config.receive_window,
+443                config.stream_receive_window,
+444            ),
+445            datagrams: DatagramState::default(),
+446            config,
+447            rem_cids: FxHashMap::from_iter([(PathId::ZERO, CidQueue::new(rem_cid))]),
+448            rng,
+449            stats: ConnectionStats::default(),
+450            path_stats: Default::default(),
+451            version,
+452
+453            // peer params are not yet known, so multipath is not enabled
+454            max_concurrent_paths: NonZeroU32::MIN,
+455            local_max_path_id: PathId::ZERO,
+456            remote_max_path_id: PathId::ZERO,
+457            max_path_id_with_cids: PathId::ZERO,
+458            abandoned_paths: Default::default(),
+459
+460            // iroh's nat traversal
+461            iroh_hp: Default::default(),
+462            qlog,
+463        };
+464        if path_validated {
+465            this.on_path_validated(PathId::ZERO);
+466        }
+467        if side.is_client() {
+468            // Kick off the connection
+469            this.write_crypto();
+470            this.init_0rtt(now);
+471        }
+472        this.qlog
+473            .emit_tuple_assigned(PathId::ZERO, network_path, now);
+474        this
+475    }
+476
+477    /// Returns the next time at which `handle_timeout` should be called
+478    ///
+479    /// The value returned may change after:
+480    /// - the application performed some I/O on the connection
+481    /// - a call was made to `handle_event`
+482    /// - a call to `poll_transmit` returned `Some`
+483    /// - a call was made to `handle_timeout`
+484    #[must_use]
+485    pub fn poll_timeout(&mut self) -> Option<Instant> {
+486        self.timers.peek()
+487    }
+488
+489    /// Returns application-facing events
+490    ///
+491    /// Connections should be polled for events after:
+492    /// - a call was made to `handle_event`
+493    /// - a call was made to `handle_timeout`
+494    #[must_use]
+495    pub fn poll(&mut self) -> Option<Event> {
+496        if let Some(x) = self.events.pop_front() {
+497            return Some(x);
+498        }
+499
+500        if let Some(event) = self.streams.poll() {
+501            return Some(Event::Stream(event));
+502        }
+503
+504        if let Some(reason) = self.state.take_error() {
+505            return Some(Event::ConnectionLost { reason });
+506        }
+507
+508        None
+509    }
+510
+511    /// Return endpoint-facing events
+512    #[must_use]
+513    pub fn poll_endpoint_events(&mut self) -> Option<EndpointEvent> {
+514        self.endpoint_events.pop_front().map(EndpointEvent)
+515    }
+516
+517    /// Provide control over streams
+518    #[must_use]
+519    pub fn streams(&mut self) -> Streams<'_> {
+520        Streams {
+521            state: &mut self.streams,
+522            conn_state: &self.state,
+523        }
+524    }
+525
+526    /// Provide control over streams
+527    #[must_use]
+528    pub fn recv_stream(&mut self, id: StreamId) -> RecvStream<'_> {
+529        assert!(id.dir() == Dir::Bi || id.initiator() != self.side.side());
+530        RecvStream {
+531            id,
+532            state: &mut self.streams,
+533            pending: &mut self.spaces[SpaceId::Data].pending,
+534        }
+535    }
+536
+537    /// Provide control over streams
+538    #[must_use]
+539    pub fn send_stream(&mut self, id: StreamId) -> SendStream<'_> {
+540        assert!(id.dir() == Dir::Bi || id.initiator() == self.side.side());
+541        SendStream {
+542            id,
+543            state: &mut self.streams,
+544            pending: &mut self.spaces[SpaceId::Data].pending,
+545            conn_state: &self.state,
+546        }
+547    }
+548
+549    /// Opens a new path only if no path on the same network path currently exists.
+550    ///
+551    /// This comparison will use [`FourTuple::is_probably_same_path`] on the given `network_path`
+552    /// and pass it existing path's network paths.
+553    ///
+554    /// This means that you can pass `local_ip: None` to make the comparison only compare
+555    /// remote addresses.
+556    ///
+557    /// This avoids having to guess which local interface will be used to communicate with the
+558    /// remote, should it not be known yet. We assume that if we already have a path to the remote,
+559    /// the OS is likely to use the same interface to talk to said remote.
+560    ///
+561    /// See also [`open_path`]. Returns `(path_id, true)` if the path already existed. `(path_id,
+562    /// false)` if was opened.
+563    ///
+564    /// [`open_path`]: Connection::open_path
+565    pub fn open_path_ensure(
+566        &mut self,
+567        network_path: FourTuple,
+568        initial_status: PathStatus,
+569        now: Instant,
+570    ) -> Result<(PathId, bool), PathError> {
+571        Ok(
+572            match self
+573                .paths
+574                .iter()
+575                .find(|(_id, path)| network_path.is_probably_same_path(&path.data.network_path))
+576            {
+577                Some((path_id, _state)) => (*path_id, true),
+578                None => (self.open_path(network_path, initial_status, now)?, false),
+579            },
+580        )
+581    }
+582
+583    /// Opens a new path
+584    ///
+585    /// Further errors might occur and they will be emitted in [`PathEvent::LocallyClosed`] events.
+586    /// When the path is opened it will be reported as an [`PathEvent::Opened`].
+587    pub fn open_path(
+588        &mut self,
+589        network_path: FourTuple,
+590        initial_status: PathStatus,
+591        now: Instant,
+592    ) -> Result<PathId, PathError> {
+593        if !self.is_multipath_negotiated() {
+594            return Err(PathError::MultipathNotNegotiated);
+595        }
+596        if self.side().is_server() {
+597            return Err(PathError::ServerSideNotAllowed);
+598        }
+599
+600        let max_abandoned = self.abandoned_paths.iter().max().copied();
+601        let max_used = self.paths.keys().last().copied();
+602        let path_id = max_abandoned
+603            .max(max_used)
+604            .unwrap_or(PathId::ZERO)
+605            .saturating_add(1u8);
+606
+607        if Some(path_id) > self.max_path_id() {
+608            return Err(PathError::MaxPathIdReached);
+609        }
+610        if path_id > self.remote_max_path_id {
+611            self.spaces[SpaceId::Data].pending.paths_blocked = true;
+612            return Err(PathError::MaxPathIdReached);
+613        }
+614        if self.rem_cids.get(&path_id).map(CidQueue::active).is_none() {
+615            self.spaces[SpaceId::Data]
+616                .pending
+617                .path_cids_blocked
+618                .insert(path_id);
+619            return Err(PathError::RemoteCidsExhausted);
+620        }
+621
+622        let path = self.ensure_path(path_id, network_path, now, None);
+623        path.status.local_update(initial_status);
+624
+625        Ok(path_id)
+626    }
+627
+628    /// Closes a path by sending a PATH_ABANDON frame
+629    ///
+630    /// This will not allow closing the last path. It does allow closing paths which have
+631    /// not yet been opened, as e.g. is the case when receiving a PATH_ABANDON from the peer
+632    /// for a path that was never opened locally.
+633    pub fn close_path(
+634        &mut self,
+635        now: Instant,
+636        path_id: PathId,
+637        error_code: VarInt,
+638    ) -> Result<(), ClosePathError> {
+639        if self.abandoned_paths.contains(&path_id)
+640            || Some(path_id) > self.max_path_id()
+641            || !self.paths.contains_key(&path_id)
+642        {
+643            return Err(ClosePathError::ClosedPath);
+644        }
+645        if self
+646            .paths
+647            .iter()
+648            // Would there be any remaining, non-abandoned, validated paths
+649            .any(|(id, path)| {
+650                *id != path_id && !self.abandoned_paths.contains(id) && path.data.validated
+651            })
+652            .not()
+653        {
+654            return Err(ClosePathError::LastOpenPath);
+655        }
+656
+657        // Send PATH_ABANDON
+658        self.spaces[SpaceId::Data]
+659            .pending
+660            .path_abandon
+661            .insert(path_id, error_code.into());
+662
+663        // Remove pending NEW CIDs for this path
+664        let pending_space = &mut self.spaces[SpaceId::Data].pending;
+665        pending_space.new_cids.retain(|cid| cid.path_id != path_id);
+666        pending_space.path_cids_blocked.retain(|&id| id != path_id);
+667        pending_space.path_status.retain(|&id| id != path_id);
+668
+669        // Cleanup retransmits across ALL paths (CIDs for path_id may have been transmitted on other paths)
+670        for space in self.spaces[SpaceId::Data].iter_paths_mut() {
+671            for sent_packet in space.sent_packets.values_mut() {
+672                if let Some(retransmits) = sent_packet.retransmits.get_mut() {
+673                    retransmits.new_cids.retain(|cid| cid.path_id != path_id);
+674                    retransmits.path_cids_blocked.retain(|&id| id != path_id);
+675                    retransmits.path_status.retain(|&id| id != path_id);
+676                }
+677            }
+678        }
+679
+680        // Consider remotely issued CIDs as retired.
+681        // Technically we don't have to do this just yet.  We only need to do this *after*
+682        // the ABANDON_PATH frame is sent, allowing us to still send it on the
+683        // to-be-abandoned path.  However it is recommended to send it on another path, and
+684        // we do not allow abandoning the last path anyway.
+685        self.rem_cids.remove(&path_id);
+686        self.endpoint_events
+687            .push_back(EndpointEventInner::RetireResetToken(path_id));
+688
+689        let pto = self.pto_max_path(SpaceId::Data, false);
+690
+691        let path = self.paths.get_mut(&path_id).expect("checked above");
+692
+693        // We record the time after which receiving data on this path generates a transport error.
+694        path.data.last_allowed_receive = Some(now + 3 * pto);
+695        self.abandoned_paths.insert(path_id);
+696
+697        self.set_max_path_id(now, self.local_max_path_id.saturating_add(1u8));
+698
+699        // The peer MUST respond with a corresponding PATH_ABANDON frame.
+700        // If we receive packets on the abandoned path after 3 * PTO we trigger a transport error.
+701        // In any case, we completely discard the path after 6 * PTO whether we receive a
+702        // PATH_ABANDON or not.
+703        self.timers.set(
+704            Timer::PerPath(path_id, PathTimer::DiscardPath),
+705            now + 6 * pto,
+706            self.qlog.with_time(now),
+707        );
+708        Ok(())
+709    }
+710
+711    /// Gets the [`PathData`] for a known [`PathId`].
+712    ///
+713    /// Will panic if the path_id does not reference any known path.
+714    #[track_caller]
+715    fn path_data(&self, path_id: PathId) -> &PathData {
+716        if let Some(data) = self.paths.get(&path_id) {
+717            &data.data
+718        } else {
+719            panic!(
+720                "unknown path: {path_id}, currently known paths: {:?}",
+721                self.paths.keys().collect::<Vec<_>>()
+722            );
+723        }
+724    }
+725
+726    /// Gets a reference to the [`PathData`] for a [`PathId`]
+727    fn path(&self, path_id: PathId) -> Option<&PathData> {
+728        self.paths.get(&path_id).map(|path_state| &path_state.data)
+729    }
+730
+731    /// Gets a mutable reference to the [`PathData`] for a [`PathId`]
+732    fn path_mut(&mut self, path_id: PathId) -> Option<&mut PathData> {
+733        self.paths
+734            .get_mut(&path_id)
+735            .map(|path_state| &mut path_state.data)
+736    }
+737
+738    /// Returns all known paths.
+739    ///
+740    /// There is no guarantee any of these paths are open or usable.
+741    pub fn paths(&self) -> Vec<PathId> {
+742        self.paths.keys().copied().collect()
+743    }
+744
+745    /// Gets the local [`PathStatus`] for a known [`PathId`]
+746    pub fn path_status(&self, path_id: PathId) -> Result<PathStatus, ClosedPath> {
+747        self.path(path_id)
+748            .map(PathData::local_status)
+749            .ok_or(ClosedPath { _private: () })
+750    }
+751
+752    /// Returns the path's network path represented as a 4-tuple.
+753    pub fn network_path(&self, path_id: PathId) -> Result<FourTuple, ClosedPath> {
+754        self.path(path_id)
+755            .map(|path| path.network_path)
+756            .ok_or(ClosedPath { _private: () })
+757    }
+758
+759    /// Sets the [`PathStatus`] for a known [`PathId`]
+760    ///
+761    /// Returns the previous path status on success.
+762    pub fn set_path_status(
+763        &mut self,
+764        path_id: PathId,
+765        status: PathStatus,
+766    ) -> Result<PathStatus, SetPathStatusError> {
+767        if !self.is_multipath_negotiated() {
+768            return Err(SetPathStatusError::MultipathNotNegotiated);
+769        }
+770        let path = self
+771            .path_mut(path_id)
+772            .ok_or(SetPathStatusError::ClosedPath)?;
+773        let prev = match path.status.local_update(status) {
+774            Some(prev) => {
+775                self.spaces[SpaceId::Data]
+776                    .pending
+777                    .path_status
+778                    .insert(path_id);
+779                prev
+780            }
+781            None => path.local_status(),
+782        };
+783        Ok(prev)
+784    }
+785
+786    /// Returns the remote path status
+787    // TODO(flub): Probably should also be some kind of path event?  Not even sure if I like
+788    //    this as an API, but for now it allows me to write a test easily.
+789    // TODO(flub): Technically this should be a Result<Option<PathSTatus>>?
+790    pub fn remote_path_status(&self, path_id: PathId) -> Option<PathStatus> {
+791        self.path(path_id).and_then(|path| path.remote_status())
+792    }
+793
+794    /// Sets the max_idle_timeout for a specific path
+795    ///
+796    /// See [`TransportConfig::default_path_max_idle_timeout`] for details.
+797    ///
+798    /// Returns the previous value of the setting.
+799    pub fn set_path_max_idle_timeout(
+800        &mut self,
+801        path_id: PathId,
+802        timeout: Option<Duration>,
+803    ) -> Result<Option<Duration>, ClosedPath> {
+804        let path = self
+805            .paths
+806            .get_mut(&path_id)
+807            .ok_or(ClosedPath { _private: () })?;
+808        Ok(std::mem::replace(&mut path.data.idle_timeout, timeout))
+809    }
+810
+811    /// Sets the keep_alive_interval for a specific path
+812    ///
+813    /// See [`TransportConfig::default_path_keep_alive_interval`] for details.
+814    ///
+815    /// Returns the previous value of the setting.
+816    pub fn set_path_keep_alive_interval(
+817        &mut self,
+818        path_id: PathId,
+819        interval: Option<Duration>,
+820    ) -> Result<Option<Duration>, ClosedPath> {
+821        let path = self
+822            .paths
+823            .get_mut(&path_id)
+824            .ok_or(ClosedPath { _private: () })?;
+825        Ok(std::mem::replace(&mut path.data.keep_alive, interval))
+826    }
+827
+828    /// Gets the [`PathData`] for a known [`PathId`].
+829    ///
+830    /// Will panic if the path_id does not reference any known path.
+831    #[track_caller]
+832    fn path_data_mut(&mut self, path_id: PathId) -> &mut PathData {
+833        &mut self.paths.get_mut(&path_id).expect("known path").data
+834    }
+835
+836    /// Find an open, validated path that's on the same network path as the given network path.
+837    ///
+838    /// Returns the first path matching, even if there's multiple.
+839    fn find_validated_path_on_network_path(
+840        &self,
+841        network_path: FourTuple,
+842    ) -> Option<(&PathId, &PathState)> {
+843        self.paths.iter().find(|(path_id, path_state)| {
+844            path_state.data.validated
+845                // Would this use the same network path, if network_path were used to send right now?
+846                && network_path.is_probably_same_path(&path_state.data.network_path)
+847                && !self.abandoned_paths.contains(path_id)
+848        })
+849        // TODO(@divma): we might want to ensure the path has been recently active to consider the
+850        // address validated
+851        // matheus23: Perhaps looking at !self.abandoned_paths.contains(path_id) is enough, given keep-alives?
+852    }
+853
+854    fn ensure_path(
+855        &mut self,
+856        path_id: PathId,
+857        network_path: FourTuple,
+858        now: Instant,
+859        pn: Option<u64>,
+860    ) -> &mut PathData {
+861        let valid_path = self.find_validated_path_on_network_path(network_path);
+862        let validated = valid_path.is_some();
+863        let initial_rtt = valid_path.map(|(_, path)| path.data.rtt.conservative());
+864        let vacant_entry = match self.paths.entry(path_id) {
+865            btree_map::Entry::Vacant(vacant_entry) => vacant_entry,
+866            btree_map::Entry::Occupied(occupied_entry) => {
+867                return &mut occupied_entry.into_mut().data;
+868            }
+869        };
+870
+871        debug!(%validated, %path_id, %network_path, "path added");
+872        let peer_max_udp_payload_size =
+873            u16::try_from(self.peer_params.max_udp_payload_size.into_inner()).unwrap_or(u16::MAX);
+874        self.path_generation_counter = self.path_generation_counter.wrapping_add(1);
+875        let mut data = PathData::new(
+876            network_path,
+877            self.allow_mtud,
+878            Some(peer_max_udp_payload_size),
+879            self.path_generation_counter,
+880            now,
+881            &self.config,
+882        );
+883
+884        data.validated = validated;
+885        if let Some(initial_rtt) = initial_rtt {
+886            data.rtt.reset_initial_rtt(initial_rtt);
+887        }
+888
+889        let pto = self.ack_frequency.max_ack_delay_for_pto() + data.rtt.pto_base();
+890        self.timers.set(
+891            Timer::PerPath(path_id, PathTimer::PathOpen),
+892            now + 3 * pto,
+893            self.qlog.with_time(now),
+894        );
+895
+896        // for the path to be opened we need to send a packet on the path. Sending a challenge
+897        // guarantees this
+898        data.send_new_challenge = true;
+899
+900        let path = vacant_entry.insert(PathState { data, prev: None });
+901
+902        let mut pn_space = spaces::PacketNumberSpace::new(now, SpaceId::Data, &mut self.rng);
+903        if let Some(pn) = pn {
+904            pn_space.dedup.insert(pn);
+905        }
+906        self.spaces[SpaceId::Data]
+907            .number_spaces
+908            .insert(path_id, pn_space);
+909        self.qlog.emit_tuple_assigned(path_id, network_path, now);
+910        &mut path.data
+911    }
+912
+913    /// Returns packets to transmit
+914    ///
+915    /// Connections should be polled for transmit after:
+916    /// - the application performed some I/O on the connection
+917    /// - a call was made to `handle_event`
+918    /// - a call was made to `handle_timeout`
+919    ///
+920    /// `max_datagrams` specifies how many datagrams can be returned inside a
+921    /// single Transmit using GSO. This must be at least 1.
+922    #[must_use]
+923    pub fn poll_transmit(
+924        &mut self,
+925        now: Instant,
+926        max_datagrams: NonZeroUsize,
+927        buf: &mut Vec<u8>,
+928    ) -> Option<Transmit> {
+929        if let Some(probing) = self
+930            .iroh_hp
+931            .server_side_mut()
+932            .ok()
+933            .and_then(iroh_hp::ServerState::next_probe)
+934        {
+935            let destination = probing.remote();
+936            trace!(%destination, "RAND_DATA packet");
+937            let token: u64 = self.rng.random();
+938            buf.put_u64(token);
+939            probing.finish(token);
+940            return Some(Transmit {
+941                destination,
+942                ecn: None,
+943                size: 8,
+944                segment_size: None,
+945                src_ip: None,
+946            });
+947        }
+948
+949        let max_datagrams = match self.config.enable_segmentation_offload {
+950            false => NonZeroUsize::MIN,
+951            true => max_datagrams,
+952        };
+953
+954        // Each call to poll_transmit can only send datagrams to one destination, because
+955        // all datagrams in a GSO batch are for the same destination.  Therefore only
+956        // datagrams for one Path ID are produced for each poll_transmit call.
+957
+958        // TODO(flub): this is wishful thinking and not actually implemented, but perhaps it
+959        //   should be:
+960
+961        // First, if we have to send a close, select a path for that.
+962        // Next, all paths that have a PATH_CHALLENGE or PATH_RESPONSE pending.
+963
+964        // For all, open, validated and AVAILABLE paths:
+965        // - Is the path congestion blocked or pacing blocked?
+966        // - call maybe_queue_ to ensure a tail-loss probe would be sent?
+967        // - do we need to send a close message?
+968        // - call can_send
+969        // Once there's nothing more to send on the AVAILABLE paths, do the same for BACKUP paths
+970
+971        // Check whether we need to send a close message
+972        let close = match self.state.as_type() {
+973            StateType::Drained => {
+974                self.app_limited = true;
+975                return None;
+976            }
+977            StateType::Draining | StateType::Closed => {
+978                // self.close is only reset once the associated packet had been
+979                // encoded successfully
+980                if !self.close {
+981                    self.app_limited = true;
+982                    return None;
+983                }
+984                true
+985            }
+986            _ => false,
+987        };
+988
+989        // Check whether we need to send an ACK_FREQUENCY frame
+990        if let Some(config) = &self.config.ack_frequency_config {
+991            let rtt = self
+992                .paths
+993                .values()
+994                .map(|p| p.data.rtt.get())
+995                .min()
+996                .expect("one path exists");
+997            self.spaces[SpaceId::Data].pending.ack_frequency = self
+998                .ack_frequency
+999                .should_send_ack_frequency(rtt, config, &self.peer_params)
+1000                && self.highest_space == SpaceId::Data
+1001                && self.peer_supports_ack_frequency();
+1002        }
+1003
+1004        // Whether this packet can be coalesced with another one in the same datagram.
+1005        let mut coalesce = true;
+1006
+1007        // Whether the last packet in the datagram must be padded so the datagram takes up
+1008        // to at least MIN_INITIAL_SIZE, or to the maximum segment size if this is smaller.
+1009        let mut pad_datagram = PadDatagram::No;
+1010
+1011        // Whether congestion control stopped the next packet from being sent. Further
+1012        // packets could still be built, as e.g. tail-loss probes are not congestion
+1013        // limited.
+1014        let mut congestion_blocked = false;
+1015
+1016        // The packet number of the last built packet.
+1017        let mut last_packet_number = None;
+1018
+1019        let mut path_id = *self.paths.first_key_value().expect("one path must exist").0;
+1020
+1021        // If there is any open, validated and available path we only want to send frames to
+1022        // any backup path that must be sent on that backup path exclusively.
+1023        let have_available_path = self.paths.iter().any(|(id, path)| {
+1024            path.data.validated
+1025                && path.data.local_status() == PathStatus::Available
+1026                && self.rem_cids.contains_key(id)
+1027        });
+1028
+1029        // Setup for the first path_id
+1030        let mut transmit = TransmitBuf::new(
+1031            buf,
+1032            max_datagrams,
+1033            self.path_data(path_id).current_mtu().into(),
+1034        );
+1035        if let Some(challenge) = self.send_prev_path_challenge(now, &mut transmit, path_id) {
+1036            return Some(challenge);
+1037        }
+1038        let mut space_id = match path_id {
+1039            PathId::ZERO => SpaceId::Initial,
+1040            _ => SpaceId::Data,
+1041        };
+1042
+1043        loop {
+1044            // check if there is at least one active CID to use for sending
+1045            let Some(remote_cid) = self.rem_cids.get(&path_id).map(CidQueue::active) else {
+1046                let err = PathError::RemoteCidsExhausted;
+1047                if !self.abandoned_paths.contains(&path_id) {
+1048                    debug!(?err, %path_id, "no active CID for path");
+1049                    self.events.push_back(Event::Path(PathEvent::LocallyClosed {
+1050                        id: path_id,
+1051                        error: err,
+1052                    }));
+1053                    // Locally we should have refused to open this path, the remote should
+1054                    // have given us CIDs for this path before opening it.  So we can always
+1055                    // abandon this here.
+1056                    self.close_path(
+1057                        now,
+1058                        path_id,
+1059                        TransportErrorCode::NO_CID_AVAILABLE_FOR_PATH.into(),
+1060                    )
+1061                    .ok();
+1062                    self.spaces[SpaceId::Data]
+1063                        .pending
+1064                        .path_cids_blocked
+1065                        .insert(path_id);
+1066                } else {
+1067                    trace!(%path_id, "remote CIDs retired for abandoned path");
+1068                }
+1069
+1070                match self.paths.keys().find(|&&next| next > path_id) {
+1071                    Some(next_path_id) => {
+1072                        // See if this next path can send anything.
+1073                        path_id = *next_path_id;
+1074                        space_id = SpaceId::Data;
+1075
+1076                        // update per path state
+1077                        transmit.set_segment_size(self.path_data(path_id).current_mtu().into());
+1078                        if let Some(challenge) =
+1079                            self.send_prev_path_challenge(now, &mut transmit, path_id)
+1080                        {
+1081                            return Some(challenge);
+1082                        }
+1083
+1084                        continue;
+1085                    }
+1086                    None => {
+1087                        // Nothing more to send.
+1088                        trace!(
+1089                            ?space_id,
+1090                            %path_id,
+1091                            "no CIDs to send on path, no more paths"
+1092                        );
+1093                        break;
+1094                    }
+1095                }
+1096            };
+1097
+1098            // Determine if anything can be sent in this packet number space (SpaceId +
+1099            // PathId).
+1100            let max_packet_size = if transmit.datagram_remaining_mut() > 0 {
+1101                // We are trying to coalesce another packet into this datagram.
+1102                transmit.datagram_remaining_mut()
+1103            } else {
+1104                // A new datagram needs to be started.
+1105                transmit.segment_size()
+1106            };
+1107            let can_send = self.space_can_send(space_id, path_id, max_packet_size, close);
+1108            let path_should_send = {
+1109                let path_exclusive_only = space_id == SpaceId::Data
+1110                    && have_available_path
+1111                    && self.path_data(path_id).local_status() == PathStatus::Backup;
+1112                let path_should_send = if path_exclusive_only {
+1113                    can_send.path_exclusive
+1114                } else {
+1115                    !can_send.is_empty()
+1116                };
+1117                let needs_loss_probe = self.spaces[space_id].for_path(path_id).loss_probes > 0;
+1118                path_should_send || needs_loss_probe
+1119            };
+1120
+1121            if !path_should_send && space_id < SpaceId::Data {
+1122                if self.spaces[space_id].crypto.is_some() {
+1123                    trace!(?space_id, %path_id, "nothing to send in space");
+1124                }
+1125                space_id = space_id.next();
+1126                continue;
+1127            }
+1128
+1129            let send_blocked = if path_should_send && transmit.datagram_remaining_mut() == 0 {
+1130                // Only check congestion control if a new datagram is needed.
+1131                self.path_congestion_check(space_id, path_id, &transmit, &can_send, now)
+1132            } else {
+1133                PathBlocked::No
+1134            };
+1135            if send_blocked != PathBlocked::No {
+1136                trace!(?space_id, %path_id, ?send_blocked, "congestion blocked");
+1137                congestion_blocked = true;
+1138            }
+1139            if send_blocked != PathBlocked::No && space_id < SpaceId::Data {
+1140                // Higher spaces might still have tail-loss probes to send, which are not
+1141                // congestion blocked.
+1142                space_id = space_id.next();
+1143                continue;
+1144            }
+1145            if !path_should_send || send_blocked != PathBlocked::No {
+1146                // Nothing more to send on this path, check the next path if possible.
+1147
+1148                // If there are any datagrams in the transmit, packets for another path can
+1149                // not be built.
+1150                if transmit.num_datagrams() > 0 {
+1151                    break;
+1152                }
+1153
+1154                match self.paths.keys().find(|&&next| next > path_id) {
+1155                    Some(next_path_id) => {
+1156                        // See if this next path can send anything.
+1157                        trace!(
+1158                            ?space_id,
+1159                            %path_id,
+1160                            %next_path_id,
+1161                            "nothing to send on path"
+1162                        );
+1163                        path_id = *next_path_id;
+1164                        space_id = SpaceId::Data;
+1165
+1166                        // update per path state
+1167                        transmit.set_segment_size(self.path_data(path_id).current_mtu().into());
+1168                        if let Some(challenge) =
+1169                            self.send_prev_path_challenge(now, &mut transmit, path_id)
+1170                        {
+1171                            return Some(challenge);
+1172                        }
+1173
+1174                        continue;
+1175                    }
+1176                    None => {
+1177                        // Nothing more to send.
+1178                        trace!(
+1179                            ?space_id,
+1180                            %path_id,
+1181                            next_path_id=?None::<PathId>,
+1182                            "nothing to send on path"
+1183                        );
+1184                        break;
+1185                    }
+1186                }
+1187            }
+1188
+1189            // If the datagram is full, we need to start a new one.
+1190            if transmit.datagram_remaining_mut() == 0 {
+1191                if transmit.num_datagrams() >= transmit.max_datagrams().get() {
+1192                    // No more datagrams allowed
+1193                    break;
+1194                }
+1195
+1196                match self.spaces[space_id].for_path(path_id).loss_probes {
+1197                    0 => transmit.start_new_datagram(),
+1198                    _ => {
+1199                        // We need something to send for a tail-loss probe.
+1200                        let request_immediate_ack =
+1201                            space_id == SpaceId::Data && self.peer_supports_ack_frequency();
+1202                        self.spaces[space_id].maybe_queue_probe(
+1203                            path_id,
+1204                            request_immediate_ack,
+1205                            &self.streams,
+1206                        );
+1207
+1208                        self.spaces[space_id].for_path(path_id).loss_probes -= 1;
+1209
+1210                        // Clamp the datagram to at most the minimum MTU to ensure that loss
+1211                        // probes can get through and enable recovery even if the path MTU
+1212                        // has shrank unexpectedly.
+1213                        transmit.start_new_datagram_with_size(std::cmp::min(
+1214                            usize::from(INITIAL_MTU),
+1215                            transmit.segment_size(),
+1216                        ));
+1217                    }
+1218                }
+1219                trace!(count = transmit.num_datagrams(), "new datagram started");
+1220                coalesce = true;
+1221                pad_datagram = PadDatagram::No;
+1222            }
+1223
+1224            // If coalescing another packet into the existing datagram, there should
+1225            // still be enough space for a whole packet.
+1226            if transmit.datagram_start_offset() < transmit.len() {
+1227                debug_assert!(transmit.datagram_remaining_mut() >= MIN_PACKET_SPACE);
+1228            }
+1229
+1230            //
+1231            // From here on, we've determined that a packet will definitely be sent.
+1232            //
+1233
+1234            if self.spaces[SpaceId::Initial].crypto.is_some()
+1235                && space_id == SpaceId::Handshake
+1236                && self.side.is_client()
+1237            {
+1238                // A client stops both sending and processing Initial packets when it
+1239                // sends its first Handshake packet.
+1240                self.discard_space(now, SpaceId::Initial);
+1241            }
+1242            if let Some(ref mut prev) = self.prev_crypto {
+1243                prev.update_unacked = false;
+1244            }
+1245
+1246            let mut builder = PacketBuilder::new(
+1247                now,
+1248                space_id,
+1249                path_id,
+1250                remote_cid,
+1251                &mut transmit,
+1252                can_send.other,
+1253                self,
+1254            )?;
+1255            last_packet_number = Some(builder.exact_number);
+1256            coalesce = coalesce && !builder.short_header;
+1257
+1258            if space_id == SpaceId::Initial && (self.side.is_client() || can_send.other) {
+1259                // https://www.rfc-editor.org/rfc/rfc9000.html#section-14.1
+1260                pad_datagram |= PadDatagram::ToMinMtu;
+1261            }
+1262            if space_id == SpaceId::Data && self.config.pad_to_mtu {
+1263                pad_datagram |= PadDatagram::ToSegmentSize;
 1264            }
-1265            if space_id == SpaceId::Data && self.config.pad_to_mtu {
-1266                pad_datagram |= PadDatagram::ToSegmentSize;
-1267            }
-1268
-1269            if can_send.close {
-1270                trace!("sending CONNECTION_CLOSE");
-1271                // Encode ACKs before the ConnectionClose message, to give the receiver
-1272                // a better approximate on what data has been processed. This is
-1273                // especially important with ack delay, since the peer might not
-1274                // have gotten any other ACK for the data earlier on.
-1275                let mut sent_frames = SentFrames::default();
-1276                let is_multipath_negotiated = self.is_multipath_negotiated();
-1277                for path_id in self.spaces[space_id]
-1278                    .number_spaces
-1279                    .iter()
-1280                    .filter(|(_, pns)| !pns.pending_acks.ranges().is_empty())
-1281                    .map(|(&path_id, _)| path_id)
-1282                    .collect::<Vec<_>>()
-1283                {
-1284                    Self::populate_acks(
-1285                        now,
-1286                        self.receiving_ecn,
-1287                        &mut sent_frames,
-1288                        path_id,
-1289                        space_id,
-1290                        &mut self.spaces[space_id],
-1291                        is_multipath_negotiated,
-1292                        &mut builder.frame_space_mut(),
-1293                        &mut self.stats,
-1294                        &mut qlog,
-1295                    );
-1296                }
-1297
-1298                // Since there only 64 ACK frames there will always be enough space
-1299                // to encode the ConnectionClose frame too. However we still have the
-1300                // check here to prevent crashes if something changes.
-1301                debug_assert!(
-1302                    builder.frame_space_remaining() > frame::ConnectionClose::SIZE_BOUND,
-1303                    "ACKs should leave space for ConnectionClose"
-1304                );
-1305                if frame::ConnectionClose::SIZE_BOUND < builder.frame_space_remaining() {
-1306                    let max_frame_size = builder.frame_space_remaining();
-1307                    match self.state.as_type() {
-1308                        StateType::Closed => {
-1309                            let reason: Close =
-1310                                self.state.as_closed().expect("checked").clone().into();
-1311                            if space_id == SpaceId::Data || reason.is_transport_layer() {
-1312                                reason
-1313                                    .encoder(max_frame_size)
-1314                                    .encode(&mut builder.frame_space_mut());
-1315                                qlog.frame(&Frame::Close(reason));
-1316                            } else {
-1317                                let frame = frame::ConnectionClose {
-1318                                    error_code: TransportErrorCode::APPLICATION_ERROR,
-1319                                    frame_type: frame::MaybeFrame::None,
-1320                                    reason: Bytes::new(),
-1321                                };
-1322                                frame.encode(&mut builder.frame_space_mut(), max_frame_size);
-1323                                qlog.frame(&Frame::Close(frame::Close::Connection(frame)));
-1324                            }
-1325                        }
-1326                        StateType::Draining => {
-1327                            let frame = frame::ConnectionClose {
-1328                                error_code: TransportErrorCode::NO_ERROR,
-1329                                frame_type: frame::MaybeFrame::None,
-1330                                reason: Bytes::new(),
-1331                            };
-1332                            frame.encode(&mut builder.frame_space_mut(), max_frame_size);
-1333                            qlog.frame(&Frame::Close(frame::Close::Connection(frame)));
-1334                        }
-1335                        _ => unreachable!(
-1336                            "tried to make a close packet when the connection wasn't closed"
-1337                        ),
-1338                    };
-1339                }
-1340                builder.finish_and_track(now, self, path_id, sent_frames, pad_datagram, qlog);
-1341                if space_id == self.highest_space {
-1342                    // Don't send another close packet. Even with multipath we only send
-1343                    // CONNECTION_CLOSE on a single path since we expect our paths to work.
-1344                    self.close = false;
-1345                    // `CONNECTION_CLOSE` is the final packet
-1346                    break;
-1347                } else {
-1348                    // Send a close frame in every possible space for robustness, per
-1349                    // RFC9000 "Immediate Close during the Handshake". Don't bother trying
-1350                    // to send anything else.
-1351                    space_id = space_id.next();
-1352                    continue;
-1353                }
-1354            }
-1355
-1356            // Send an off-path PATH_RESPONSE. Prioritized over on-path data to ensure that
-1357            // path validation can occur while the link is saturated.
-1358            if space_id == SpaceId::Data && builder.buf.num_datagrams() == 1 {
-1359                let path = self.path_data_mut(path_id);
-1360                if let Some((token, network_path)) =
-1361                    path.path_responses.pop_off_path(path.network_path)
-1362                {
-1363                    // TODO(flub): We need to use the right CID!  We shouldn't use the same
-1364                    //    CID as the current active one for the path.  Though see also
-1365                    //    https://github.com/quinn-rs/quinn/issues/2184
-1366                    let response = frame::PathResponse(token);
-1367                    trace!(%response, "(off-path)");
-1368                    builder.frame_space_mut().write(response);
-1369                    qlog.frame(&Frame::PathResponse(response));
-1370                    self.stats.frame_tx.path_response += 1;
-1371                    builder.finish_and_track(
-1372                        now,
-1373                        self,
-1374                        path_id,
-1375                        SentFrames {
-1376                            non_retransmits: true,
-1377                            ..SentFrames::default()
-1378                        },
-1379                        PadDatagram::ToMinMtu,
-1380                        qlog,
-1381                    );
-1382                    self.stats.udp_tx.on_sent(1, transmit.len());
-1383                    return Some(Transmit {
-1384                        destination: network_path.remote,
-1385                        size: transmit.len(),
-1386                        ecn: None,
-1387                        segment_size: None,
-1388                        src_ip: network_path.local_ip,
-1389                    });
-1390                }
-1391            }
-1392
-1393            let sent_frames = {
-1394                let path_exclusive_only = have_available_path
-1395                    && self.path_data(path_id).local_status() == PathStatus::Backup;
-1396                let pn = builder.exact_number;
-1397                self.populate_packet(
-1398                    now,
-1399                    space_id,
-1400                    path_id,
-1401                    path_exclusive_only,
-1402                    &mut builder.frame_space_mut(),
-1403                    pn,
-1404                    &mut qlog,
-1405                )
-1406            };
-1407
-1408            // ACK-only packets should only be sent when explicitly allowed. If we write them due to
-1409            // any other reason, there is a bug which leads to one component announcing write
-1410            // readiness while not writing any data. This degrades performance. The condition is
-1411            // only checked if the full MTU is available and when potentially large fixed-size
-1412            // frames aren't queued, so that lack of space in the datagram isn't the reason for just
-1413            // writing ACKs.
-1414            debug_assert!(
-1415                !(sent_frames.is_ack_only(&self.streams)
-1416                    && !can_send.acks
-1417                    && can_send.other
-1418                    && builder.buf.segment_size()
-1419                        == self.path_data(path_id).current_mtu() as usize
-1420                    && self.datagrams.outgoing.is_empty()),
-1421                "SendableFrames was {can_send:?}, but only ACKs have been written"
-1422            );
-1423            if sent_frames.requires_padding {
-1424                pad_datagram |= PadDatagram::ToMinMtu;
-1425            }
-1426
-1427            for (path_id, _pn) in sent_frames.largest_acked.iter() {
-1428                self.spaces[space_id]
-1429                    .for_path(*path_id)
-1430                    .pending_acks
-1431                    .acks_sent();
-1432                self.timers.stop(
-1433                    Timer::PerPath(*path_id, PathTimer::MaxAckDelay),
-1434                    self.qlog.with_time(now),
-1435                );
-1436            }
+1265
+1266            if can_send.close {
+1267                trace!("sending CONNECTION_CLOSE");
+1268                // Encode ACKs before the ConnectionClose message, to give the receiver
+1269                // a better approximate on what data has been processed. This is
+1270                // especially important with ack delay, since the peer might not
+1271                // have gotten any other ACK for the data earlier on.
+1272                let is_multipath_negotiated = self.is_multipath_negotiated();
+1273                for path_id in self.spaces[space_id]
+1274                    .number_spaces
+1275                    .iter()
+1276                    .filter(|(_, pns)| !pns.pending_acks.ranges().is_empty())
+1277                    .map(|(&path_id, _)| path_id)
+1278                    .collect::<Vec<_>>()
+1279                {
+1280                    Self::populate_acks(
+1281                        now,
+1282                        self.receiving_ecn,
+1283                        path_id,
+1284                        space_id,
+1285                        &mut self.spaces[space_id],
+1286                        is_multipath_negotiated,
+1287                        &mut builder,
+1288                        &mut self.stats.frame_tx,
+1289                    );
+1290                }
+1291
+1292                // Since there only 64 ACK frames there will always be enough space
+1293                // to encode the ConnectionClose frame too. However we still have the
+1294                // check here to prevent crashes if something changes.
+1295                debug_assert!(
+1296                    builder.frame_space_remaining() > frame::ConnectionClose::SIZE_BOUND,
+1297                    "ACKs should leave space for ConnectionClose"
+1298                );
+1299                let stats = &mut self.stats.frame_tx;
+1300                if frame::ConnectionClose::SIZE_BOUND < builder.frame_space_remaining() {
+1301                    let max_frame_size = builder.frame_space_remaining();
+1302                    let close: Close = match self.state.as_type() {
+1303                        StateType::Closed => {
+1304                            let reason: Close =
+1305                                self.state.as_closed().expect("checked").clone().into();
+1306                            if space_id == SpaceId::Data || reason.is_transport_layer() {
+1307                                reason
+1308                            } else {
+1309                                TransportError::APPLICATION_ERROR("").into()
+1310                            }
+1311                        }
+1312                        StateType::Draining => TransportError::NO_ERROR("").into(),
+1313                        _ => unreachable!(
+1314                            "tried to make a close packet when the connection wasn't closed"
+1315                        ),
+1316                    };
+1317                    builder.write_frame(close.encoder(max_frame_size), stats);
+1318                }
+1319                builder.finish_and_track(now, self, path_id, pad_datagram);
+1320                if space_id == self.highest_space {
+1321                    // Don't send another close packet. Even with multipath we only send
+1322                    // CONNECTION_CLOSE on a single path since we expect our paths to work.
+1323                    self.close = false;
+1324                    // `CONNECTION_CLOSE` is the final packet
+1325                    break;
+1326                } else {
+1327                    // Send a close frame in every possible space for robustness, per
+1328                    // RFC9000 "Immediate Close during the Handshake". Don't bother trying
+1329                    // to send anything else.
+1330                    space_id = space_id.next();
+1331                    continue;
+1332                }
+1333            }
+1334
+1335            // Send an off-path PATH_RESPONSE. Prioritized over on-path data to ensure that
+1336            // path validation can occur while the link is saturated.
+1337            if space_id == SpaceId::Data && builder.buf.num_datagrams() == 1 {
+1338                let path = self.path_data_mut(path_id);
+1339                if let Some((token, network_path)) =
+1340                    path.path_responses.pop_off_path(path.network_path)
+1341                {
+1342                    // TODO(flub): We need to use the right CID!  We shouldn't use the same
+1343                    //    CID as the current active one for the path.  Though see also
+1344                    //    https://github.com/quinn-rs/quinn/issues/2184
+1345                    //
+1346                    let stats = &mut self.stats.frame_tx;
+1347                    let frame = frame::PathResponse(token);
+1348                    builder.write_frame_with_log_msg(frame, stats, Some("(off-path)"));
+1349                    builder.finish_and_track(now, self, path_id, PadDatagram::ToMinMtu);
+1350                    self.stats.udp_tx.on_sent(1, transmit.len());
+1351                    return Some(Transmit {
+1352                        destination: network_path.remote,
+1353                        size: transmit.len(),
+1354                        ecn: None,
+1355                        segment_size: None,
+1356                        src_ip: network_path.local_ip,
+1357                    });
+1358                }
+1359            }
+1360
+1361            let path_exclusive_only =
+1362                have_available_path && self.path_data(path_id).local_status() == PathStatus::Backup;
+1363            self.populate_packet(now, space_id, path_id, path_exclusive_only, &mut builder);
+1364
+1365            // ACK-only packets should only be sent when explicitly allowed. If we write them due to
+1366            // any other reason, there is a bug which leads to one component announcing write
+1367            // readiness while not writing any data. This degrades performance. The condition is
+1368            // only checked if the full MTU is available and when potentially large fixed-size
+1369            // frames aren't queued, so that lack of space in the datagram isn't the reason for just
+1370            // writing ACKs.
+1371            debug_assert!(
+1372                !(builder.sent_frames().is_ack_only(&self.streams)
+1373                    && !can_send.acks
+1374                    && can_send.other
+1375                    && builder.buf.segment_size()
+1376                        == self.path_data(path_id).current_mtu() as usize
+1377                    && self.datagrams.outgoing.is_empty()),
+1378                "SendableFrames was {can_send:?}, but only ACKs have been written"
+1379            );
+1380            if builder.sent_frames().requires_padding {
+1381                pad_datagram |= PadDatagram::ToMinMtu;
+1382            }
+1383
+1384            for (path_id, _pn) in builder.sent_frames().largest_acked.iter() {
+1385                self.spaces[space_id]
+1386                    .for_path(*path_id)
+1387                    .pending_acks
+1388                    .acks_sent();
+1389                self.timers.stop(
+1390                    Timer::PerPath(*path_id, PathTimer::MaxAckDelay),
+1391                    self.qlog.with_time(now),
+1392                );
+1393            }
+1394
+1395            // Now we need to finish the packet.  Before we do so we need to know if we will
+1396            // be coalescing the next packet into this one, or will be ending the datagram
+1397            // as well.  Because if this is the last packet in the datagram more padding
+1398            // might be needed because of the packet type, or to fill the GSO segment size.
+1399
+1400            // Are we allowed to coalesce AND is there enough space for another *packet* in
+1401            // this datagram AND is there another packet to send in this or the next space?
+1402            if coalesce
+1403                && builder
+1404                    .buf
+1405                    .datagram_remaining_mut()
+1406                    .saturating_sub(builder.predict_packet_end())
+1407                    > MIN_PACKET_SPACE
+1408                && self
+1409                    .next_send_space(space_id, path_id, builder.buf, close)
+1410                    .is_some()
+1411            {
+1412                // We can append/coalesce the next packet into the current
+1413                // datagram. Finish the current packet without adding extra padding.
+1414                builder.finish_and_track(now, self, path_id, PadDatagram::No);
+1415            } else {
+1416                // We need a new datagram for the next packet.  Finish the current
+1417                // packet with padding.
+1418                if builder.buf.num_datagrams() > 1 && matches!(pad_datagram, PadDatagram::No) {
+1419                    // If too many padding bytes would be required to continue the
+1420                    // GSO batch after this packet, end the GSO batch here. Ensures
+1421                    // that fixed-size frames with heterogeneous sizes
+1422                    // (e.g. application datagrams) won't inadvertently waste large
+1423                    // amounts of bandwidth. The exact threshold is a bit arbitrary
+1424                    // and might benefit from further tuning, though there's no
+1425                    // universally optimal value.
+1426                    const MAX_PADDING: usize = 32;
+1427                    if builder.buf.datagram_remaining_mut()
+1428                        > builder.predict_packet_end() + MAX_PADDING
+1429                    {
+1430                        trace!(
+1431                            "GSO truncated by demand for {} padding bytes",
+1432                            builder.buf.datagram_remaining_mut() - builder.predict_packet_end()
+1433                        );
+1434                        builder.finish_and_track(now, self, path_id, PadDatagram::No);
+1435                        break;
+1436                    }
 1437
-1438            // Now we need to finish the packet.  Before we do so we need to know if we will
-1439            // be coalescing the next packet into this one, or will be ending the datagram
-1440            // as well.  Because if this is the last packet in the datagram more padding
-1441            // might be needed because of the packet type, or to fill the GSO segment size.
-1442
-1443            // Are we allowed to coalesce AND is there enough space for another *packet* in
-1444            // this datagram AND is there another packet to send in this or the next space?
-1445            if coalesce
-1446                && builder
-1447                    .buf
-1448                    .datagram_remaining_mut()
-1449                    .saturating_sub(builder.predict_packet_end())
-1450                    > MIN_PACKET_SPACE
-1451                && self
-1452                    .next_send_space(space_id, path_id, builder.buf, close)
-1453                    .is_some()
-1454            {
-1455                // We can append/coalesce the next packet into the current
-1456                // datagram. Finish the current packet without adding extra padding.
-1457                builder.finish_and_track(now, self, path_id, sent_frames, PadDatagram::No, qlog);
-1458            } else {
-1459                // We need a new datagram for the next packet.  Finish the current
-1460                // packet with padding.
-1461                if builder.buf.num_datagrams() > 1 && matches!(pad_datagram, PadDatagram::No) {
-1462                    // If too many padding bytes would be required to continue the
-1463                    // GSO batch after this packet, end the GSO batch here. Ensures
-1464                    // that fixed-size frames with heterogeneous sizes
-1465                    // (e.g. application datagrams) won't inadvertently waste large
-1466                    // amounts of bandwidth. The exact threshold is a bit arbitrary
-1467                    // and might benefit from further tuning, though there's no
-1468                    // universally optimal value.
-1469                    const MAX_PADDING: usize = 32;
-1470                    if builder.buf.datagram_remaining_mut()
-1471                        > builder.predict_packet_end() + MAX_PADDING
-1472                    {
-1473                        trace!(
-1474                            "GSO truncated by demand for {} padding bytes",
-1475                            builder.buf.datagram_remaining_mut() - builder.predict_packet_end()
-1476                        );
-1477                        builder.finish_and_track(
-1478                            now,
-1479                            self,
-1480                            path_id,
-1481                            sent_frames,
-1482                            PadDatagram::No,
-1483                            qlog,
-1484                        );
-1485                        break;
-1486                    }
-1487
-1488                    // Pad the current datagram to GSO segment size so it can be
-1489                    // included in the GSO batch.
-1490                    builder.finish_and_track(
-1491                        now,
-1492                        self,
-1493                        path_id,
-1494                        sent_frames,
-1495                        PadDatagram::ToSegmentSize,
-1496                        qlog,
-1497                    );
-1498                } else {
-1499                    builder.finish_and_track(now, self, path_id, sent_frames, pad_datagram, qlog);
-1500                }
-1501                if transmit.num_datagrams() == 1 {
-1502                    transmit.clip_datagram_size();
-1503                }
-1504            }
-1505        }
-1506
-1507        if let Some(last_packet_number) = last_packet_number {
-1508            // Note that when sending in multiple packet spaces the last packet number will
-1509            // be the one from the highest packet space.
-1510            self.path_data_mut(path_id).congestion.on_sent(
-1511                now,
-1512                transmit.len() as u64,
-1513                last_packet_number,
-1514            );
-1515        }
-1516
-1517        self.qlog.emit_recovery_metrics(
-1518            path_id,
-1519            &mut self.paths.get_mut(&path_id).unwrap().data,
-1520            now,
-1521        );
-1522
-1523        self.app_limited = transmit.is_empty() && !congestion_blocked;
+1438                    // Pad the current datagram to GSO segment size so it can be
+1439                    // included in the GSO batch.
+1440                    builder.finish_and_track(now, self, path_id, PadDatagram::ToSegmentSize);
+1441                } else {
+1442                    builder.finish_and_track(now, self, path_id, pad_datagram);
+1443                }
+1444                if transmit.num_datagrams() == 1 {
+1445                    transmit.clip_datagram_size();
+1446                }
+1447            }
+1448        }
+1449
+1450        if let Some(last_packet_number) = last_packet_number {
+1451            // Note that when sending in multiple packet spaces the last packet number will
+1452            // be the one from the highest packet space.
+1453            self.path_data_mut(path_id).congestion.on_sent(
+1454                now,
+1455                transmit.len() as u64,
+1456                last_packet_number,
+1457            );
+1458        }
+1459
+1460        self.qlog.emit_recovery_metrics(
+1461            path_id,
+1462            &mut self.paths.get_mut(&path_id).unwrap().data,
+1463            now,
+1464        );
+1465
+1466        self.app_limited = transmit.is_empty() && !congestion_blocked;
+1467
+1468        // Send MTU probe if necessary
+1469        if transmit.is_empty() && self.state.is_established() {
+1470            // MTU probing happens only in Data space.
+1471            let space_id = SpaceId::Data;
+1472            path_id = *self.paths.first_key_value().expect("one path must exist").0;
+1473            let probe_data = loop {
+1474                // We MTU probe all paths for which all of the following is true:
+1475                // - We have an active destination CID for the path.
+1476                // - The remote address *and* path are validated.
+1477                // - The path is not abandoned.
+1478                // - The MTU Discovery subsystem wants to probe the path.
+1479                let active_cid = self.rem_cids.get(&path_id).map(CidQueue::active);
+1480                let eligible = self.path_data(path_id).validated
+1481                    && !self.path_data(path_id).is_validating_path()
+1482                    && !self.abandoned_paths.contains(&path_id);
+1483                let probe_size = eligible
+1484                    .then(|| {
+1485                        let next_pn = self.spaces[space_id].for_path(path_id).peek_tx_number();
+1486                        self.path_data_mut(path_id).mtud.poll_transmit(now, next_pn)
+1487                    })
+1488                    .flatten();
+1489                match (active_cid, probe_size) {
+1490                    (Some(active_cid), Some(probe_size)) => {
+1491                        // Let's send an MTUD probe!
+1492                        break Some((active_cid, probe_size));
+1493                    }
+1494                    _ => {
+1495                        // Find the next path to check if it needs an MTUD probe.
+1496                        match self.paths.keys().find(|&&next| next > path_id) {
+1497                            Some(next) => {
+1498                                path_id = *next;
+1499                                continue;
+1500                            }
+1501                            None => break None,
+1502                        }
+1503                    }
+1504                }
+1505            };
+1506            if let Some((active_cid, probe_size)) = probe_data {
+1507                // We are definitely sending a DPLPMTUD probe.
+1508                debug_assert_eq!(transmit.num_datagrams(), 0);
+1509                transmit.start_new_datagram_with_size(probe_size as usize);
+1510
+1511                let mut builder = PacketBuilder::new(
+1512                    now,
+1513                    space_id,
+1514                    path_id,
+1515                    active_cid,
+1516                    &mut transmit,
+1517                    true,
+1518                    self,
+1519                )?;
+1520
+1521                // We implement MTU probes as ping packets padded up to the probe size
+1522                trace!(?probe_size, "writing MTUD probe");
+1523                builder.write_frame(frame::Ping, &mut self.stats.frame_tx);
 1524
-1525        // Send MTU probe if necessary
-1526        if transmit.is_empty() && self.state.is_established() {
-1527            // MTU probing happens only in Data space.
-1528            let space_id = SpaceId::Data;
-1529            path_id = *self.paths.first_key_value().expect("one path must exist").0;
-1530            let probe_data = loop {
-1531                // We MTU probe all paths for which all of the following is true:
-1532                // - We have an active destination CID for the path.
-1533                // - The remote address *and* path are validated.
-1534                // - The path is not abandoned.
-1535                // - The MTU Discovery subsystem wants to probe the path.
-1536                let active_cid = self.rem_cids.get(&path_id).map(CidQueue::active);
-1537                let eligible = self.path_data(path_id).validated
-1538                    && !self.path_data(path_id).is_validating_path()
-1539                    && !self.abandoned_paths.contains(&path_id);
-1540                let probe_size = eligible
-1541                    .then(|| {
-1542                        let next_pn = self.spaces[space_id].for_path(path_id).peek_tx_number();
-1543                        self.path_data_mut(path_id).mtud.poll_transmit(now, next_pn)
-1544                    })
-1545                    .flatten();
-1546                match (active_cid, probe_size) {
-1547                    (Some(active_cid), Some(probe_size)) => {
-1548                        // Let's send an MTUD probe!
-1549                        break Some((active_cid, probe_size));
-1550                    }
-1551                    _ => {
-1552                        // Find the next path to check if it needs an MTUD probe.
-1553                        match self.paths.keys().find(|&&next| next > path_id) {
-1554                            Some(next) => {
-1555                                path_id = *next;
-1556                                continue;
-1557                            }
-1558                            None => break None,
-1559                        }
-1560                    }
-1561                }
-1562            };
-1563            if let Some((active_cid, probe_size)) = probe_data {
-1564                // We are definitely sending a DPLPMTUD probe.
-1565                debug_assert_eq!(transmit.num_datagrams(), 0);
-1566                transmit.start_new_datagram_with_size(probe_size as usize);
-1567
-1568                let mut qlog = QlogSentPacket::default();
-1569                let mut builder = PacketBuilder::new(
-1570                    now,
-1571                    space_id,
-1572                    path_id,
-1573                    active_cid,
-1574                    &mut transmit,
-1575                    true,
-1576                    self,
-1577                    &mut qlog,
-1578                )?;
-1579
-1580                // We implement MTU probes as ping packets padded up to the probe size
-1581                trace!(?probe_size, "writing MTUD probe");
-1582                trace!("PING");
-1583                builder.frame_space_mut().write(frame::FrameType::Ping);
-1584                qlog.frame(&Frame::Ping);
-1585                self.stats.frame_tx.ping += 1;
-1586
-1587                // If supported by the peer, we want no delays to the probe's ACK
-1588                if self.peer_supports_ack_frequency() {
-1589                    trace!("IMMEDIATE_ACK");
-1590                    builder
-1591                        .frame_space_mut()
-1592                        .write(frame::FrameType::ImmediateAck);
-1593                    self.stats.frame_tx.immediate_ack += 1;
-1594                    qlog.frame(&Frame::ImmediateAck);
-1595                }
-1596
-1597                let sent_frames = SentFrames {
-1598                    non_retransmits: true,
-1599                    ..Default::default()
-1600                };
-1601                builder.finish_and_track(
-1602                    now,
-1603                    self,
-1604                    path_id,
-1605                    sent_frames,
-1606                    PadDatagram::ToSize(probe_size),
-1607                    qlog,
-1608                );
-1609
-1610                self.path_stats
-1611                    .entry(path_id)
-1612                    .or_default()
-1613                    .sent_plpmtud_probes += 1;
-1614            }
-1615        }
-1616
-1617        if transmit.is_empty() {
-1618            return None;
-1619        }
-1620
-1621        let network_path = self.path_data(path_id).network_path;
-1622        trace!(
-1623            segment_size = transmit.segment_size(),
-1624            last_datagram_len = transmit.len() % transmit.segment_size(),
-1625            %network_path,
-1626            "sending {} bytes in {} datagrams",
-1627            transmit.len(),
-1628            transmit.num_datagrams()
-1629        );
-1630        self.path_data_mut(path_id)
-1631            .inc_total_sent(transmit.len() as u64);
-1632
-1633        self.stats
-1634            .udp_tx
-1635            .on_sent(transmit.num_datagrams() as u64, transmit.len());
-1636
-1637        Some(Transmit {
-1638            destination: network_path.remote,
-1639            size: transmit.len(),
-1640            ecn: if self.path_data(path_id).sending_ecn {
-1641                Some(EcnCodepoint::Ect0)
-1642            } else {
-1643                None
-1644            },
-1645            segment_size: match transmit.num_datagrams() {
-1646                1 => None,
-1647                _ => Some(transmit.segment_size()),
-1648            },
-1649            src_ip: network_path.local_ip,
-1650        })
-1651    }
-1652
-1653    /// Returns the [`SpaceId`] of the next packet space which has data to send
-1654    ///
-1655    /// This takes into account the space available to frames in the next datagram.
-1656    // TODO(flub): This duplication is not nice.
-1657    fn next_send_space(
-1658        &mut self,
-1659        current_space_id: SpaceId,
-1660        path_id: PathId,
-1661        buf: &TransmitBuf<'_>,
-1662        close: bool,
-1663    ) -> Option<SpaceId> {
-1664        // Number of bytes available for frames if this is a 1-RTT packet. We're guaranteed
-1665        // to be able to send an individual frame at least this large in the next 1-RTT
-1666        // packet. This could be generalized to support every space, but it's only needed to
-1667        // handle large fixed-size frames, which only exist in 1-RTT (application
-1668        // datagrams). We don't account for coalesced packets potentially occupying space
-1669        // because frames can always spill into the next datagram.
-1670        let mut space_id = current_space_id;
-1671        loop {
-1672            let can_send = self.space_can_send(space_id, path_id, buf.segment_size(), close);
-1673            if !can_send.is_empty() || (close && self.spaces[space_id].crypto.is_some()) {
-1674                return Some(space_id);
-1675            }
-1676            space_id = match space_id {
-1677                SpaceId::Initial => SpaceId::Handshake,
-1678                SpaceId::Handshake => SpaceId::Data,
-1679                SpaceId::Data => break,
-1680            }
-1681        }
-1682        None
-1683    }
-1684
-1685    /// Checks if creating a new datagram would be blocked by congestion control
-1686    fn path_congestion_check(
-1687        &mut self,
-1688        space_id: SpaceId,
-1689        path_id: PathId,
-1690        transmit: &TransmitBuf<'_>,
-1691        can_send: &SendableFrames,
-1692        now: Instant,
-1693    ) -> PathBlocked {
-1694        // Anti-amplification is only based on `total_sent`, which gets updated after
-1695        // the transmit is sent. Therefore we pass the amount of bytes for datagrams
-1696        // that are already created, as well as 1 byte for starting another datagram. If
-1697        // there is any anti-amplification budget left, we always allow a full MTU to be
-1698        // sent (see https://github.com/quinn-rs/quinn/issues/1082).
-1699        if self.side().is_server()
-1700            && self
-1701                .path_data(path_id)
-1702                .anti_amplification_blocked(transmit.len() as u64 + 1)
-1703        {
-1704            trace!(?space_id, %path_id, "blocked by anti-amplification");
-1705            return PathBlocked::AntiAmplification;
-1706        }
+1525                // If supported by the peer, we want no delays to the probe's ACK
+1526                if self.peer_supports_ack_frequency() {
+1527                    builder.write_frame(frame::ImmediateAck, &mut self.stats.frame_tx);
+1528                }
+1529
+1530                builder.finish_and_track(now, self, path_id, PadDatagram::ToSize(probe_size));
+1531
+1532                self.path_stats
+1533                    .entry(path_id)
+1534                    .or_default()
+1535                    .sent_plpmtud_probes += 1;
+1536            }
+1537        }
+1538
+1539        if transmit.is_empty() {
+1540            return None;
+1541        }
+1542
+1543        let network_path = self.path_data(path_id).network_path;
+1544        trace!(
+1545            segment_size = transmit.segment_size(),
+1546            last_datagram_len = transmit.len() % transmit.segment_size(),
+1547            %network_path,
+1548            "sending {} bytes in {} datagrams",
+1549            transmit.len(),
+1550            transmit.num_datagrams()
+1551        );
+1552        self.path_data_mut(path_id)
+1553            .inc_total_sent(transmit.len() as u64);
+1554
+1555        self.stats
+1556            .udp_tx
+1557            .on_sent(transmit.num_datagrams() as u64, transmit.len());
+1558
+1559        Some(Transmit {
+1560            destination: network_path.remote,
+1561            size: transmit.len(),
+1562            ecn: if self.path_data(path_id).sending_ecn {
+1563                Some(EcnCodepoint::Ect0)
+1564            } else {
+1565                None
+1566            },
+1567            segment_size: match transmit.num_datagrams() {
+1568                1 => None,
+1569                _ => Some(transmit.segment_size()),
+1570            },
+1571            src_ip: network_path.local_ip,
+1572        })
+1573    }
+1574
+1575    /// Returns the [`SpaceId`] of the next packet space which has data to send
+1576    ///
+1577    /// This takes into account the space available to frames in the next datagram.
+1578    // TODO(flub): This duplication is not nice.
+1579    fn next_send_space(
+1580        &mut self,
+1581        current_space_id: SpaceId,
+1582        path_id: PathId,
+1583        buf: &TransmitBuf<'_>,
+1584        close: bool,
+1585    ) -> Option<SpaceId> {
+1586        // Number of bytes available for frames if this is a 1-RTT packet. We're guaranteed
+1587        // to be able to send an individual frame at least this large in the next 1-RTT
+1588        // packet. This could be generalized to support every space, but it's only needed to
+1589        // handle large fixed-size frames, which only exist in 1-RTT (application
+1590        // datagrams). We don't account for coalesced packets potentially occupying space
+1591        // because frames can always spill into the next datagram.
+1592        let mut space_id = current_space_id;
+1593        loop {
+1594            let can_send = self.space_can_send(space_id, path_id, buf.segment_size(), close);
+1595            if !can_send.is_empty() || (close && self.spaces[space_id].crypto.is_some()) {
+1596                return Some(space_id);
+1597            }
+1598            space_id = match space_id {
+1599                SpaceId::Initial => SpaceId::Handshake,
+1600                SpaceId::Handshake => SpaceId::Data,
+1601                SpaceId::Data => break,
+1602            }
+1603        }
+1604        None
+1605    }
+1606
+1607    /// Checks if creating a new datagram would be blocked by congestion control
+1608    fn path_congestion_check(
+1609        &mut self,
+1610        space_id: SpaceId,
+1611        path_id: PathId,
+1612        transmit: &TransmitBuf<'_>,
+1613        can_send: &SendableFrames,
+1614        now: Instant,
+1615    ) -> PathBlocked {
+1616        // Anti-amplification is only based on `total_sent`, which gets updated after
+1617        // the transmit is sent. Therefore we pass the amount of bytes for datagrams
+1618        // that are already created, as well as 1 byte for starting another datagram. If
+1619        // there is any anti-amplification budget left, we always allow a full MTU to be
+1620        // sent (see https://github.com/quinn-rs/quinn/issues/1082).
+1621        if self.side().is_server()
+1622            && self
+1623                .path_data(path_id)
+1624                .anti_amplification_blocked(transmit.len() as u64 + 1)
+1625        {
+1626            trace!(?space_id, %path_id, "blocked by anti-amplification");
+1627            return PathBlocked::AntiAmplification;
+1628        }
+1629
+1630        // Congestion control check.
+1631        // Tail loss probes must not be blocked by congestion, or a deadlock could arise.
+1632        let bytes_to_send = transmit.segment_size() as u64;
+1633        let need_loss_probe = self.spaces[space_id].for_path(path_id).loss_probes > 0;
+1634
+1635        if can_send.other && !need_loss_probe && !can_send.close {
+1636            let path = self.path_data(path_id);
+1637            if path.in_flight.bytes + bytes_to_send >= path.congestion.window() {
+1638                trace!(?space_id, %path_id, "blocked by congestion control");
+1639                return PathBlocked::Congestion;
+1640            }
+1641        }
+1642
+1643        // Pacing check.
+1644        if let Some(delay) = self.path_data_mut(path_id).pacing_delay(bytes_to_send, now) {
+1645            self.timers.set(
+1646                Timer::PerPath(path_id, PathTimer::Pacing),
+1647                delay,
+1648                self.qlog.with_time(now),
+1649            );
+1650            // Loss probes and CONNECTION_CLOSE should be subject to pacing, even though
+1651            // they are not congestion controlled.
+1652            trace!(?space_id, %path_id, "blocked by pacing");
+1653            return PathBlocked::Pacing;
+1654        }
+1655
+1656        PathBlocked::No
+1657    }
+1658
+1659    /// Send PATH_CHALLENGE for a previous path if necessary
+1660    ///
+1661    /// QUIC-TRANSPORT section 9.3.3
+1662    /// <https://www.rfc-editor.org/rfc/rfc9000.html#name-off-path-packet-forwarding>
+1663    fn send_prev_path_challenge(
+1664        &mut self,
+1665        now: Instant,
+1666        buf: &mut TransmitBuf<'_>,
+1667        path_id: PathId,
+1668    ) -> Option<Transmit> {
+1669        let (prev_cid, prev_path) = self.paths.get_mut(&path_id)?.prev.as_mut()?;
+1670        // TODO (matheus23): We could use !prev_path.is_validating() here instead to
+1671        // (possibly) also re-send challenges when they get lost.
+1672        if !prev_path.send_new_challenge {
+1673            return None;
+1674        };
+1675        prev_path.send_new_challenge = false;
+1676        let network_path = prev_path.network_path;
+1677        let token = self.rng.random();
+1678        let info = paths::SentChallengeInfo {
+1679            sent_instant: now,
+1680            network_path,
+1681        };
+1682        prev_path.challenges_sent.insert(token, info);
+1683        debug_assert_eq!(
+1684            self.highest_space,
+1685            SpaceId::Data,
+1686            "PATH_CHALLENGE queued without 1-RTT keys"
+1687        );
+1688        buf.start_new_datagram_with_size(MIN_INITIAL_SIZE as usize);
+1689
+1690        // Use the previous CID to avoid linking the new path with the previous path. We
+1691        // don't bother accounting for possible retirement of that prev_cid because this is
+1692        // sent once, immediately after migration, when the CID is known to be valid. Even
+1693        // if a post-migration packet caused the CID to be retired, it's fair to pretend
+1694        // this is sent first.
+1695        debug_assert_eq!(buf.datagram_start_offset(), 0);
+1696        let mut builder =
+1697            PacketBuilder::new(now, SpaceId::Data, path_id, *prev_cid, buf, false, self)?;
+1698        let challenge = frame::PathChallenge(token);
+1699        let stats = &mut self.stats.frame_tx;
+1700        builder.write_frame_with_log_msg(challenge, stats, Some("validating previous path"));
+1701
+1702        // An endpoint MUST expand datagrams that contain a PATH_CHALLENGE frame
+1703        // to at least the smallest allowed maximum datagram size of 1200 bytes,
+1704        // unless the anti-amplification limit for the path does not permit
+1705        // sending a datagram of this size
+1706        builder.pad_to(MIN_INITIAL_SIZE);
 1707
-1708        // Congestion control check.
-1709        // Tail loss probes must not be blocked by congestion, or a deadlock could arise.
-1710        let bytes_to_send = transmit.segment_size() as u64;
-1711        let need_loss_probe = self.spaces[space_id].for_path(path_id).loss_probes > 0;
-1712
-1713        if can_send.other && !need_loss_probe && !can_send.close {
-1714            let path = self.path_data(path_id);
-1715            if path.in_flight.bytes + bytes_to_send >= path.congestion.window() {
-1716                trace!(?space_id, %path_id, "blocked by congestion control");
-1717                return PathBlocked::Congestion;
-1718            }
-1719        }
-1720
-1721        // Pacing check.
-1722        if let Some(delay) = self.path_data_mut(path_id).pacing_delay(bytes_to_send, now) {
-1723            self.timers.set(
-1724                Timer::PerPath(path_id, PathTimer::Pacing),
-1725                delay,
-1726                self.qlog.with_time(now),
-1727            );
-1728            // Loss probes and CONNECTION_CLOSE should be subject to pacing, even though
-1729            // they are not congestion controlled.
-1730            trace!(?space_id, %path_id, "blocked by pacing");
-1731            return PathBlocked::Pacing;
-1732        }
-1733
-1734        PathBlocked::No
-1735    }
-1736
-1737    /// Send PATH_CHALLENGE for a previous path if necessary
-1738    ///
-1739    /// QUIC-TRANSPORT section 9.3.3
-1740    /// <https://www.rfc-editor.org/rfc/rfc9000.html#name-off-path-packet-forwarding>
-1741    fn send_prev_path_challenge(
-1742        &mut self,
-1743        now: Instant,
-1744        buf: &mut TransmitBuf<'_>,
-1745        path_id: PathId,
-1746    ) -> Option<Transmit> {
-1747        let (prev_cid, prev_path) = self.paths.get_mut(&path_id)?.prev.as_mut()?;
-1748        // TODO (matheus23): We could use !prev_path.is_validating() here instead to
-1749        // (possibly) also re-send challenges when they get lost.
-1750        if !prev_path.send_new_challenge {
-1751            return None;
-1752        };
-1753        prev_path.send_new_challenge = false;
-1754        let network_path = prev_path.network_path;
-1755        let token = self.rng.random();
-1756        let info = paths::SentChallengeInfo {
-1757            sent_instant: now,
-1758            network_path,
-1759        };
-1760        prev_path.challenges_sent.insert(token, info);
-1761        debug_assert_eq!(
-1762            self.highest_space,
-1763            SpaceId::Data,
-1764            "PATH_CHALLENGE queued without 1-RTT keys"
-1765        );
-1766        buf.start_new_datagram_with_size(MIN_INITIAL_SIZE as usize);
-1767
-1768        // Use the previous CID to avoid linking the new path with the previous path. We
-1769        // don't bother accounting for possible retirement of that prev_cid because this is
-1770        // sent once, immediately after migration, when the CID is known to be valid. Even
-1771        // if a post-migration packet caused the CID to be retired, it's fair to pretend
-1772        // this is sent first.
-1773        debug_assert_eq!(buf.datagram_start_offset(), 0);
-1774        let mut qlog = QlogSentPacket::default();
-1775        let mut builder = PacketBuilder::new(
-1776            now,
-1777            SpaceId::Data,
-1778            path_id,
-1779            *prev_cid,
-1780            buf,
-1781            false,
-1782            self,
-1783            &mut qlog,
-1784        )?;
-1785        let challenge = frame::PathChallenge(token);
-1786        trace!(%challenge, "validating previous path");
-1787        qlog.frame(&Frame::PathChallenge(challenge));
-1788        builder.frame_space_mut().write(challenge);
-1789        self.stats.frame_tx.path_challenge += 1;
-1790
-1791        // An endpoint MUST expand datagrams that contain a PATH_CHALLENGE frame
-1792        // to at least the smallest allowed maximum datagram size of 1200 bytes,
-1793        // unless the anti-amplification limit for the path does not permit
-1794        // sending a datagram of this size
-1795        builder.pad_to(MIN_INITIAL_SIZE);
-1796
-1797        builder.finish(self, now, qlog);
-1798        self.stats.udp_tx.on_sent(1, buf.len());
-1799
-1800        Some(Transmit {
-1801            destination: network_path.remote,
-1802            size: buf.len(),
-1803            ecn: None,
-1804            segment_size: None,
-1805            src_ip: network_path.local_ip,
-1806        })
-1807    }
-1808
-1809    /// Indicate what types of frames are ready to send for the given space
-1810    ///
-1811    /// *packet_size* is the number of bytes available to build the next packet.  *close*
-1812    /// *indicates whether a CONNECTION_CLOSE frame needs to be sent.
-1813    fn space_can_send(
-1814        &mut self,
-1815        space_id: SpaceId,
-1816        path_id: PathId,
-1817        packet_size: usize,
-1818        close: bool,
-1819    ) -> SendableFrames {
-1820        let pn = self.spaces[SpaceId::Data]
-1821            .for_path(path_id)
-1822            .peek_tx_number();
-1823        let frame_space_1rtt = packet_size.saturating_sub(self.predict_1rtt_overhead(pn, path_id));
-1824        if self.spaces[space_id].crypto.is_none()
-1825            && (space_id != SpaceId::Data
-1826                || self.zero_rtt_crypto.is_none()
-1827                || self.side.is_server())
-1828        {
-1829            // No keys available for this space
-1830            return SendableFrames::empty();
-1831        }
-1832        let mut can_send = self.spaces[space_id].can_send(path_id, &self.streams);
-1833        if space_id == SpaceId::Data {
-1834            can_send |= self.can_send_1rtt(path_id, frame_space_1rtt);
-1835        }
-1836
-1837        can_send.close = close && self.spaces[space_id].crypto.is_some();
-1838
-1839        can_send
-1840    }
-1841
-1842    /// Process `ConnectionEvent`s generated by the associated `Endpoint`
-1843    ///
-1844    /// Will execute protocol logic upon receipt of a connection event, in turn preparing signals
-1845    /// (including application `Event`s, `EndpointEvent`s and outgoing datagrams) that should be
-1846    /// extracted through the relevant methods.
-1847    pub fn handle_event(&mut self, event: ConnectionEvent) {
-1848        use ConnectionEventInner::*;
-1849        match event.0 {
-1850            Datagram(DatagramConnectionEvent {
-1851                now,
-1852                network_path,
-1853                path_id,
-1854                ecn,
-1855                first_decode,
-1856                remaining,
-1857            }) => {
-1858                let span = trace_span!("pkt", %path_id);
-1859                let _guard = span.enter();
-1860
-1861                if self.update_network_path_or_discard(network_path, path_id) {
-1862                    // A return value of true indicates we should discard this packet.
-1863                    return;
-1864                }
-1865
-1866                let was_anti_amplification_blocked = self
-1867                    .path(path_id)
-1868                    .map(|path| path.anti_amplification_blocked(1))
-1869                    .unwrap_or(true); // if we don't know about this path it's eagerly considered as unvalidated
-1870                // TODO(@divma): revisit this
-1871
-1872                self.stats.udp_rx.datagrams += 1;
-1873                self.stats.udp_rx.bytes += first_decode.len() as u64;
-1874                let data_len = first_decode.len();
-1875
-1876                self.handle_decode(now, network_path, path_id, ecn, first_decode);
-1877                // The current `path` might have changed inside `handle_decode` since the packet
-1878                // could have triggered a migration. The packet might also belong to an unknown
-1879                // path and have been rejected. Make sure the data received is accounted for the
-1880                // most recent path by accessing `path` after `handle_decode`.
-1881                if let Some(path) = self.path_mut(path_id) {
-1882                    path.inc_total_recvd(data_len as u64);
-1883                }
-1884
-1885                if let Some(data) = remaining {
-1886                    self.stats.udp_rx.bytes += data.len() as u64;
-1887                    self.handle_coalesced(now, network_path, path_id, ecn, data);
-1888                }
-1889
-1890                if let Some(path) = self.paths.get_mut(&path_id) {
-1891                    self.qlog
-1892                        .emit_recovery_metrics(path_id, &mut path.data, now);
-1893                }
-1894
-1895                if was_anti_amplification_blocked {
-1896                    // A prior attempt to set the loss detection timer may have failed due to
-1897                    // anti-amplification, so ensure it's set now. Prevents a handshake deadlock if
-1898                    // the server's first flight is lost.
-1899                    self.set_loss_detection_timer(now, path_id);
-1900                }
-1901            }
-1902            NewIdentifiers(ids, now, cid_len, cid_lifetime) => {
-1903                let path_id = ids.first().map(|issued| issued.path_id).unwrap_or_default();
-1904                debug_assert!(ids.iter().all(|issued| issued.path_id == path_id));
-1905                let cid_state = self
-1906                    .local_cid_state
-1907                    .entry(path_id)
-1908                    .or_insert_with(|| CidState::new(cid_len, cid_lifetime, now, 0));
-1909                cid_state.new_cids(&ids, now);
-1910
-1911                ids.into_iter().rev().for_each(|frame| {
-1912                    self.spaces[SpaceId::Data].pending.new_cids.push(frame);
-1913                });
-1914                // Always update Timer::PushNewCid
-1915                self.reset_cid_retirement(now);
-1916            }
-1917        }
-1918    }
-1919
-1920    /// Updates the network path for `path_id`.
-1921    ///
-1922    /// Returns true if a packet coming in for this `path_id` over given `network_path` should be discarded.
-1923    /// Returns false if the path was updated and the packet doesn't need to be discarded.
-1924    fn update_network_path_or_discard(&mut self, network_path: FourTuple, path_id: PathId) -> bool {
-1925        let remote_may_migrate = self.side.remote_may_migrate(&self.state);
-1926        let local_ip_may_migrate = self.side.is_client();
-1927        // If this packet could initiate a migration and we're a client or a server that
-1928        // forbids migration, drop the datagram. This could be relaxed to heuristically
-1929        // permit NAT-rebinding-like migration.
-1930        if let Some(known_path) = self.path_mut(path_id) {
-1931            if network_path.remote != known_path.network_path.remote && !remote_may_migrate {
-1932                trace!(
-1933                    %path_id,
-1934                    %network_path,
-1935                    %known_path.network_path,
-1936                    "discarding packet from unrecognized peer"
-1937                );
-1938                return true;
-1939            }
-1940
-1941            if known_path.network_path.local_ip.is_some()
-1942                && network_path.local_ip.is_some()
-1943                && known_path.network_path.local_ip != network_path.local_ip
-1944                && !local_ip_may_migrate
-1945            {
-1946                trace!(
-1947                    %path_id,
-1948                    %network_path,
-1949                    %known_path.network_path,
-1950                    "discarding packet sent to incorrect interface"
-1951                );
-1952                return true;
-1953            }
-1954            // If the datagram indicates that we've changed our local IP, we update it.
-1955            // This is alluded to in Section 5.2 of the Multipath RFC draft 18:
-1956            // https://www.ietf.org/archive/id/draft-ietf-quic-multipath-18.html#name-using-multiple-paths-on-the
-1957            // > Client receives the packet, recognizes a path migration, updates the source address of path 2 to 192.0.2.1.
-1958            if let Some(local_ip) = network_path.local_ip {
-1959                if known_path
-1960                    .network_path
-1961                    .local_ip
-1962                    .is_some_and(|ip| ip != local_ip)
-1963                {
-1964                    debug!(
-1965                        %path_id,
-1966                        %network_path,
-1967                        %known_path.network_path,
-1968                        "path's local address seemingly migrated"
-1969                    );
-1970                }
-1971                // We update the address without path validation on the client side.
-1972                // https://www.ietf.org/archive/id/draft-ietf-quic-multipath-18.html#section-5.1
-1973                // > Servers observing a 4-tuple change will perform path validation (see Section 9 of [QUIC-TRANSPORT]).
-1974                // This sounds like it's *only* the server endpoints that do this.
-1975                // TODO(matheus23): We should still consider doing a proper migration on the client side in the future.
-1976                // For now, this preserves the behavior of this code pre 4-tuple tracking.
-1977                known_path.network_path.local_ip = Some(local_ip);
-1978            }
-1979        }
-1980        false
-1981    }
-1982
-1983    /// Process timer expirations
-1984    ///
-1985    /// Executes protocol logic, potentially preparing signals (including application `Event`s,
-1986    /// `EndpointEvent`s and outgoing datagrams) that should be extracted through the relevant
-1987    /// methods.
-1988    ///
-1989    /// It is most efficient to call this immediately after the system clock reaches the latest
-1990    /// `Instant` that was output by `poll_timeout`; however spurious extra calls will simply
-1991    /// no-op and therefore are safe.
-1992    pub fn handle_timeout(&mut self, now: Instant) {
-1993        while let Some((timer, _time)) = self.timers.expire_before(now, &self.qlog) {
-1994            // TODO(@divma): remove `at` when the unicorn is born
-1995            trace!(?timer, at=?now, "timeout");
-1996            match timer {
-1997                Timer::Conn(timer) => match timer {
-1998                    ConnTimer::Close => {
-1999                        self.state.move_to_drained(None);
-2000                        self.endpoint_events.push_back(EndpointEventInner::Drained);
-2001                    }
-2002                    ConnTimer::Idle => {
-2003                        self.kill(ConnectionError::TimedOut);
-2004                    }
-2005                    ConnTimer::KeepAlive => {
-2006                        trace!("sending keep-alive");
-2007                        self.ping();
-2008                    }
-2009                    ConnTimer::KeyDiscard => {
-2010                        self.zero_rtt_crypto = None;
-2011                        self.prev_crypto = None;
-2012                    }
-2013                    ConnTimer::PushNewCid => {
-2014                        while let Some((path_id, when)) = self.next_cid_retirement() {
-2015                            if when > now {
-2016                                break;
-2017                            }
-2018                            match self.local_cid_state.get_mut(&path_id) {
-2019                                None => error!(%path_id, "No local CID state for path"),
-2020                                Some(cid_state) => {
-2021                                    // Update `retire_prior_to` field in NEW_CONNECTION_ID frame
-2022                                    let num_new_cid = cid_state.on_cid_timeout().into();
-2023                                    if !self.state.is_closed() {
-2024                                        trace!(
-2025                                            "push a new CID to peer RETIRE_PRIOR_TO field {}",
-2026                                            cid_state.retire_prior_to()
-2027                                        );
-2028                                        self.endpoint_events.push_back(
-2029                                            EndpointEventInner::NeedIdentifiers(
-2030                                                path_id,
-2031                                                now,
-2032                                                num_new_cid,
-2033                                            ),
-2034                                        );
-2035                                    }
-2036                                }
-2037                            }
-2038                        }
-2039                    }
-2040                },
-2041                // TODO: add path_id as span somehow
-2042                Timer::PerPath(path_id, timer) => {
-2043                    let span = trace_span!("per-path timer fired", %path_id, ?timer);
-2044                    let _guard = span.enter();
-2045                    match timer {
-2046                        PathTimer::PathIdle => {
-2047                            self.close_path(now, path_id, TransportErrorCode::NO_ERROR.into())
-2048                                .ok();
-2049                        }
+1708        builder.finish(self, now);
+1709        self.stats.udp_tx.on_sent(1, buf.len());
+1710
+1711        Some(Transmit {
+1712            destination: network_path.remote,
+1713            size: buf.len(),
+1714            ecn: None,
+1715            segment_size: None,
+1716            src_ip: network_path.local_ip,
+1717        })
+1718    }
+1719
+1720    /// Indicate what types of frames are ready to send for the given space
+1721    ///
+1722    /// *packet_size* is the number of bytes available to build the next packet.  *close*
+1723    /// *indicates whether a CONNECTION_CLOSE frame needs to be sent.
+1724    fn space_can_send(
+1725        &mut self,
+1726        space_id: SpaceId,
+1727        path_id: PathId,
+1728        packet_size: usize,
+1729        close: bool,
+1730    ) -> SendableFrames {
+1731        let pn = self.spaces[SpaceId::Data]
+1732            .for_path(path_id)
+1733            .peek_tx_number();
+1734        let frame_space_1rtt = packet_size.saturating_sub(self.predict_1rtt_overhead(pn, path_id));
+1735        if self.spaces[space_id].crypto.is_none()
+1736            && (space_id != SpaceId::Data
+1737                || self.zero_rtt_crypto.is_none()
+1738                || self.side.is_server())
+1739        {
+1740            // No keys available for this space
+1741            return SendableFrames::empty();
+1742        }
+1743        let mut can_send = self.spaces[space_id].can_send(path_id, &self.streams);
+1744        if space_id == SpaceId::Data {
+1745            can_send |= self.can_send_1rtt(path_id, frame_space_1rtt);
+1746        }
+1747
+1748        can_send.close = close && self.spaces[space_id].crypto.is_some();
+1749
+1750        can_send
+1751    }
+1752
+1753    /// Process `ConnectionEvent`s generated by the associated `Endpoint`
+1754    ///
+1755    /// Will execute protocol logic upon receipt of a connection event, in turn preparing signals
+1756    /// (including application `Event`s, `EndpointEvent`s and outgoing datagrams) that should be
+1757    /// extracted through the relevant methods.
+1758    pub fn handle_event(&mut self, event: ConnectionEvent) {
+1759        use ConnectionEventInner::*;
+1760        match event.0 {
+1761            Datagram(DatagramConnectionEvent {
+1762                now,
+1763                network_path,
+1764                path_id,
+1765                ecn,
+1766                first_decode,
+1767                remaining,
+1768            }) => {
+1769                let span = trace_span!("pkt", %path_id);
+1770                let _guard = span.enter();
+1771
+1772                if self.update_network_path_or_discard(network_path, path_id) {
+1773                    // A return value of true indicates we should discard this packet.
+1774                    return;
+1775                }
+1776
+1777                let was_anti_amplification_blocked = self
+1778                    .path(path_id)
+1779                    .map(|path| path.anti_amplification_blocked(1))
+1780                    .unwrap_or(true); // if we don't know about this path it's eagerly considered as unvalidated
+1781                // TODO(@divma): revisit this
+1782
+1783                self.stats.udp_rx.datagrams += 1;
+1784                self.stats.udp_rx.bytes += first_decode.len() as u64;
+1785                let data_len = first_decode.len();
+1786
+1787                self.handle_decode(now, network_path, path_id, ecn, first_decode);
+1788                // The current `path` might have changed inside `handle_decode` since the packet
+1789                // could have triggered a migration. The packet might also belong to an unknown
+1790                // path and have been rejected. Make sure the data received is accounted for the
+1791                // most recent path by accessing `path` after `handle_decode`.
+1792                if let Some(path) = self.path_mut(path_id) {
+1793                    path.inc_total_recvd(data_len as u64);
+1794                }
+1795
+1796                if let Some(data) = remaining {
+1797                    self.stats.udp_rx.bytes += data.len() as u64;
+1798                    self.handle_coalesced(now, network_path, path_id, ecn, data);
+1799                }
+1800
+1801                if let Some(path) = self.paths.get_mut(&path_id) {
+1802                    self.qlog
+1803                        .emit_recovery_metrics(path_id, &mut path.data, now);
+1804                }
+1805
+1806                if was_anti_amplification_blocked {
+1807                    // A prior attempt to set the loss detection timer may have failed due to
+1808                    // anti-amplification, so ensure it's set now. Prevents a handshake deadlock if
+1809                    // the server's first flight is lost.
+1810                    self.set_loss_detection_timer(now, path_id);
+1811                }
+1812            }
+1813            NewIdentifiers(ids, now, cid_len, cid_lifetime) => {
+1814                let path_id = ids.first().map(|issued| issued.path_id).unwrap_or_default();
+1815                debug_assert!(ids.iter().all(|issued| issued.path_id == path_id));
+1816                let cid_state = self
+1817                    .local_cid_state
+1818                    .entry(path_id)
+1819                    .or_insert_with(|| CidState::new(cid_len, cid_lifetime, now, 0));
+1820                cid_state.new_cids(&ids, now);
+1821
+1822                ids.into_iter().rev().for_each(|frame| {
+1823                    self.spaces[SpaceId::Data].pending.new_cids.push(frame);
+1824                });
+1825                // Always update Timer::PushNewCid
+1826                self.reset_cid_retirement(now);
+1827            }
+1828        }
+1829    }
+1830
+1831    /// Updates the network path for `path_id`.
+1832    ///
+1833    /// Returns true if a packet coming in for this `path_id` over given `network_path` should be discarded.
+1834    /// Returns false if the path was updated and the packet doesn't need to be discarded.
+1835    fn update_network_path_or_discard(&mut self, network_path: FourTuple, path_id: PathId) -> bool {
+1836        let remote_may_migrate = self.side.remote_may_migrate(&self.state);
+1837        let local_ip_may_migrate = self.side.is_client();
+1838        // If this packet could initiate a migration and we're a client or a server that
+1839        // forbids migration, drop the datagram. This could be relaxed to heuristically
+1840        // permit NAT-rebinding-like migration.
+1841        if let Some(known_path) = self.path_mut(path_id) {
+1842            if network_path.remote != known_path.network_path.remote && !remote_may_migrate {
+1843                trace!(
+1844                    %path_id,
+1845                    %network_path,
+1846                    %known_path.network_path,
+1847                    "discarding packet from unrecognized peer"
+1848                );
+1849                return true;
+1850            }
+1851
+1852            if known_path.network_path.local_ip.is_some()
+1853                && network_path.local_ip.is_some()
+1854                && known_path.network_path.local_ip != network_path.local_ip
+1855                && !local_ip_may_migrate
+1856            {
+1857                trace!(
+1858                    %path_id,
+1859                    %network_path,
+1860                    %known_path.network_path,
+1861                    "discarding packet sent to incorrect interface"
+1862                );
+1863                return true;
+1864            }
+1865            // If the datagram indicates that we've changed our local IP, we update it.
+1866            // This is alluded to in Section 5.2 of the Multipath RFC draft 18:
+1867            // https://www.ietf.org/archive/id/draft-ietf-quic-multipath-18.html#name-using-multiple-paths-on-the
+1868            // > Client receives the packet, recognizes a path migration, updates the source address of path 2 to 192.0.2.1.
+1869            if let Some(local_ip) = network_path.local_ip {
+1870                if known_path
+1871                    .network_path
+1872                    .local_ip
+1873                    .is_some_and(|ip| ip != local_ip)
+1874                {
+1875                    debug!(
+1876                        %path_id,
+1877                        %network_path,
+1878                        %known_path.network_path,
+1879                        "path's local address seemingly migrated"
+1880                    );
+1881                }
+1882                // We update the address without path validation on the client side.
+1883                // https://www.ietf.org/archive/id/draft-ietf-quic-multipath-18.html#section-5.1
+1884                // > Servers observing a 4-tuple change will perform path validation (see Section 9 of [QUIC-TRANSPORT]).
+1885                // This sounds like it's *only* the server endpoints that do this.
+1886                // TODO(matheus23): We should still consider doing a proper migration on the client side in the future.
+1887                // For now, this preserves the behavior of this code pre 4-tuple tracking.
+1888                known_path.network_path.local_ip = Some(local_ip);
+1889            }
+1890        }
+1891        false
+1892    }
+1893
+1894    /// Process timer expirations
+1895    ///
+1896    /// Executes protocol logic, potentially preparing signals (including application `Event`s,
+1897    /// `EndpointEvent`s and outgoing datagrams) that should be extracted through the relevant
+1898    /// methods.
+1899    ///
+1900    /// It is most efficient to call this immediately after the system clock reaches the latest
+1901    /// `Instant` that was output by `poll_timeout`; however spurious extra calls will simply
+1902    /// no-op and therefore are safe.
+1903    pub fn handle_timeout(&mut self, now: Instant) {
+1904        while let Some((timer, _time)) = self.timers.expire_before(now, &self.qlog) {
+1905            // TODO(@divma): remove `at` when the unicorn is born
+1906            trace!(?timer, at=?now, "timeout");
+1907            match timer {
+1908                Timer::Conn(timer) => match timer {
+1909                    ConnTimer::Close => {
+1910                        self.state.move_to_drained(None);
+1911                        self.endpoint_events.push_back(EndpointEventInner::Drained);
+1912                    }
+1913                    ConnTimer::Idle => {
+1914                        self.kill(ConnectionError::TimedOut);
+1915                    }
+1916                    ConnTimer::KeepAlive => {
+1917                        trace!("sending keep-alive");
+1918                        self.ping();
+1919                    }
+1920                    ConnTimer::KeyDiscard => {
+1921                        self.zero_rtt_crypto = None;
+1922                        self.prev_crypto = None;
+1923                    }
+1924                    ConnTimer::PushNewCid => {
+1925                        while let Some((path_id, when)) = self.next_cid_retirement() {
+1926                            if when > now {
+1927                                break;
+1928                            }
+1929                            match self.local_cid_state.get_mut(&path_id) {
+1930                                None => error!(%path_id, "No local CID state for path"),
+1931                                Some(cid_state) => {
+1932                                    // Update `retire_prior_to` field in NEW_CONNECTION_ID frame
+1933                                    let num_new_cid = cid_state.on_cid_timeout().into();
+1934                                    if !self.state.is_closed() {
+1935                                        trace!(
+1936                                            "push a new CID to peer RETIRE_PRIOR_TO field {}",
+1937                                            cid_state.retire_prior_to()
+1938                                        );
+1939                                        self.endpoint_events.push_back(
+1940                                            EndpointEventInner::NeedIdentifiers(
+1941                                                path_id,
+1942                                                now,
+1943                                                num_new_cid,
+1944                                            ),
+1945                                        );
+1946                                    }
+1947                                }
+1948                            }
+1949                        }
+1950                    }
+1951                },
+1952                // TODO: add path_id as span somehow
+1953                Timer::PerPath(path_id, timer) => {
+1954                    let span = trace_span!("per-path timer fired", %path_id, ?timer);
+1955                    let _guard = span.enter();
+1956                    match timer {
+1957                        PathTimer::PathIdle => {
+1958                            self.close_path(now, path_id, TransportErrorCode::NO_ERROR.into())
+1959                                .ok();
+1960                        }
+1961
+1962                        PathTimer::PathKeepAlive => {
+1963                            trace!("sending keep-alive on path");
+1964                            self.ping_path(path_id).ok();
+1965                        }
+1966                        PathTimer::LossDetection => {
+1967                            self.on_loss_detection_timeout(now, path_id);
+1968                            self.qlog.emit_recovery_metrics(
+1969                                path_id,
+1970                                &mut self.paths.get_mut(&path_id).unwrap().data,
+1971                                now,
+1972                            );
+1973                        }
+1974                        PathTimer::PathValidation => {
+1975                            let Some(path) = self.paths.get_mut(&path_id) else {
+1976                                continue;
+1977                            };
+1978                            self.timers.stop(
+1979                                Timer::PerPath(path_id, PathTimer::PathChallengeLost),
+1980                                self.qlog.with_time(now),
+1981                            );
+1982                            debug!("path validation failed");
+1983                            if let Some((_, prev)) = path.prev.take() {
+1984                                path.data = prev;
+1985                            }
+1986                            path.data.challenges_sent.clear();
+1987                            path.data.send_new_challenge = false;
+1988                        }
+1989                        PathTimer::PathChallengeLost => {
+1990                            let Some(path) = self.paths.get_mut(&path_id) else {
+1991                                continue;
+1992                            };
+1993                            trace!("path challenge deemed lost");
+1994                            path.data.send_new_challenge = true;
+1995                        }
+1996                        PathTimer::PathOpen => {
+1997                            let Some(path) = self.paths.get_mut(&path_id) else {
+1998                                continue;
+1999                            };
+2000                            path.data.challenges_sent.clear();
+2001                            path.data.send_new_challenge = false;
+2002                            self.timers.stop(
+2003                                Timer::PerPath(path_id, PathTimer::PathChallengeLost),
+2004                                self.qlog.with_time(now),
+2005                            );
+2006                            debug!("new path validation failed");
+2007                            if let Err(err) = self.close_path(
+2008                                now,
+2009                                path_id,
+2010                                TransportErrorCode::PATH_UNSTABLE_OR_POOR.into(),
+2011                            ) {
+2012                                warn!(?err, "failed closing path");
+2013                            }
+2014
+2015                            self.events.push_back(Event::Path(PathEvent::LocallyClosed {
+2016                                id: path_id,
+2017                                error: PathError::ValidationFailed,
+2018                            }));
+2019                        }
+2020                        PathTimer::Pacing => trace!("pacing timer expired"),
+2021                        PathTimer::MaxAckDelay => {
+2022                            trace!("max ack delay reached");
+2023                            // This timer is only armed in the Data space
+2024                            self.spaces[SpaceId::Data]
+2025                                .for_path(path_id)
+2026                                .pending_acks
+2027                                .on_max_ack_delay_timeout()
+2028                        }
+2029                        PathTimer::DiscardPath => {
+2030                            // The path was abandoned and 3*PTO has expired since.  Clean up all
+2031                            // remaining state and install stateless reset token.
+2032                            self.timers.stop_per_path(path_id, self.qlog.with_time(now));
+2033                            if let Some(loc_cid_state) = self.local_cid_state.remove(&path_id) {
+2034                                let (min_seq, max_seq) = loc_cid_state.active_seq();
+2035                                for seq in min_seq..=max_seq {
+2036                                    self.endpoint_events.push_back(
+2037                                        EndpointEventInner::RetireConnectionId(
+2038                                            now, path_id, seq, false,
+2039                                        ),
+2040                                    );
+2041                                }
+2042                            }
+2043                            self.discard_path(path_id, now);
+2044                        }
+2045                    }
+2046                }
+2047            }
+2048        }
+2049    }
 2050
-2051                        PathTimer::PathKeepAlive => {
-2052                            trace!("sending keep-alive on path");
-2053                            self.ping_path(path_id).ok();
-2054                        }
-2055                        PathTimer::LossDetection => {
-2056                            self.on_loss_detection_timeout(now, path_id);
-2057                            self.qlog.emit_recovery_metrics(
-2058                                path_id,
-2059                                &mut self.paths.get_mut(&path_id).unwrap().data,
-2060                                now,
-2061                            );
-2062                        }
-2063                        PathTimer::PathValidation => {
-2064                            let Some(path) = self.paths.get_mut(&path_id) else {
-2065                                continue;
-2066                            };
-2067                            self.timers.stop(
-2068                                Timer::PerPath(path_id, PathTimer::PathChallengeLost),
-2069                                self.qlog.with_time(now),
-2070                            );
-2071                            debug!("path validation failed");
-2072                            if let Some((_, prev)) = path.prev.take() {
-2073                                path.data = prev;
-2074                            }
-2075                            path.data.challenges_sent.clear();
-2076                            path.data.send_new_challenge = false;
-2077                        }
-2078                        PathTimer::PathChallengeLost => {
-2079                            let Some(path) = self.paths.get_mut(&path_id) else {
-2080                                continue;
-2081                            };
-2082                            trace!("path challenge deemed lost");
-2083                            path.data.send_new_challenge = true;
-2084                        }
-2085                        PathTimer::PathOpen => {
-2086                            let Some(path) = self.paths.get_mut(&path_id) else {
-2087                                continue;
-2088                            };
-2089                            path.data.challenges_sent.clear();
-2090                            path.data.send_new_challenge = false;
-2091                            self.timers.stop(
-2092                                Timer::PerPath(path_id, PathTimer::PathChallengeLost),
-2093                                self.qlog.with_time(now),
-2094                            );
-2095                            debug!("new path validation failed");
-2096                            if let Err(err) = self.close_path(
-2097                                now,
-2098                                path_id,
-2099                                TransportErrorCode::PATH_UNSTABLE_OR_POOR.into(),
-2100                            ) {
-2101                                warn!(?err, "failed closing path");
-2102                            }
-2103
-2104                            self.events.push_back(Event::Path(PathEvent::LocallyClosed {
-2105                                id: path_id,
-2106                                error: PathError::ValidationFailed,
-2107                            }));
-2108                        }
-2109                        PathTimer::Pacing => trace!("pacing timer expired"),
-2110                        PathTimer::MaxAckDelay => {
-2111                            trace!("max ack delay reached");
-2112                            // This timer is only armed in the Data space
-2113                            self.spaces[SpaceId::Data]
-2114                                .for_path(path_id)
-2115                                .pending_acks
-2116                                .on_max_ack_delay_timeout()
-2117                        }
-2118                        PathTimer::DiscardPath => {
-2119                            // The path was abandoned and 3*PTO has expired since.  Clean up all
-2120                            // remaining state and install stateless reset token.
-2121                            self.timers.stop_per_path(path_id, self.qlog.with_time(now));
-2122                            if let Some(loc_cid_state) = self.local_cid_state.remove(&path_id) {
-2123                                let (min_seq, max_seq) = loc_cid_state.active_seq();
-2124                                for seq in min_seq..=max_seq {
-2125                                    self.endpoint_events.push_back(
-2126                                        EndpointEventInner::RetireConnectionId(
-2127                                            now, path_id, seq, false,
-2128                                        ),
-2129                                    );
-2130                                }
-2131                            }
-2132                            self.discard_path(path_id, now);
-2133                        }
-2134                    }
-2135                }
-2136            }
-2137        }
-2138    }
-2139
-2140    /// Close a connection immediately
-2141    ///
-2142    /// This does not ensure delivery of outstanding data. It is the application's responsibility to
-2143    /// call this only when all important communications have been completed, e.g. by calling
-2144    /// [`SendStream::finish`] on outstanding streams and waiting for the corresponding
-2145    /// [`StreamEvent::Finished`] event.
-2146    ///
-2147    /// If [`Streams::send_streams`] returns 0, all outstanding stream data has been
-2148    /// delivered. There may still be data from the peer that has not been received.
-2149    ///
-2150    /// [`StreamEvent::Finished`]: crate::StreamEvent::Finished
-2151    pub fn close(&mut self, now: Instant, error_code: VarInt, reason: Bytes) {
-2152        self.close_inner(
-2153            now,
-2154            Close::Application(frame::ApplicationClose { error_code, reason }),
-2155        )
-2156    }
-2157
-2158    fn close_inner(&mut self, now: Instant, reason: Close) {
-2159        let was_closed = self.state.is_closed();
-2160        if !was_closed {
-2161            self.close_common();
-2162            self.set_close_timer(now);
-2163            self.close = true;
-2164            self.state.move_to_closed_local(reason);
-2165        }
-2166    }
-2167
-2168    /// Control datagrams
-2169    pub fn datagrams(&mut self) -> Datagrams<'_> {
-2170        Datagrams { conn: self }
-2171    }
-2172
-2173    /// Returns connection statistics
-2174    pub fn stats(&mut self) -> ConnectionStats {
-2175        self.stats.clone()
+2051    /// Close a connection immediately
+2052    ///
+2053    /// This does not ensure delivery of outstanding data. It is the application's responsibility to
+2054    /// call this only when all important communications have been completed, e.g. by calling
+2055    /// [`SendStream::finish`] on outstanding streams and waiting for the corresponding
+2056    /// [`StreamEvent::Finished`] event.
+2057    ///
+2058    /// If [`Streams::send_streams`] returns 0, all outstanding stream data has been
+2059    /// delivered. There may still be data from the peer that has not been received.
+2060    ///
+2061    /// [`StreamEvent::Finished`]: crate::StreamEvent::Finished
+2062    pub fn close(&mut self, now: Instant, error_code: VarInt, reason: Bytes) {
+2063        self.close_inner(
+2064            now,
+2065            Close::Application(frame::ApplicationClose { error_code, reason }),
+2066        )
+2067    }
+2068
+2069    fn close_inner(&mut self, now: Instant, reason: Close) {
+2070        let was_closed = self.state.is_closed();
+2071        if !was_closed {
+2072            self.close_common();
+2073            self.set_close_timer(now);
+2074            self.close = true;
+2075            self.state.move_to_closed_local(reason);
+2076        }
+2077    }
+2078
+2079    /// Control datagrams
+2080    pub fn datagrams(&mut self) -> Datagrams<'_> {
+2081        Datagrams { conn: self }
+2082    }
+2083
+2084    /// Returns connection statistics
+2085    pub fn stats(&mut self) -> ConnectionStats {
+2086        self.stats.clone()
+2087    }
+2088
+2089    /// Returns path statistics
+2090    pub fn path_stats(&mut self, path_id: PathId) -> Option<PathStats> {
+2091        let path = self.paths.get(&path_id)?;
+2092        let stats = self.path_stats.entry(path_id).or_default();
+2093        stats.rtt = path.data.rtt.get();
+2094        stats.cwnd = path.data.congestion.window();
+2095        stats.current_mtu = path.data.mtud.current_mtu();
+2096        Some(*stats)
+2097    }
+2098
+2099    /// Ping the remote endpoint
+2100    ///
+2101    /// Causes an ACK-eliciting packet to be transmitted on the connection.
+2102    pub fn ping(&mut self) {
+2103        // TODO(flub): This is very brute-force: it pings *all* the paths.  Instead it would
+2104        //    be nice if we could only send a single packet for this.
+2105        for path_data in self.spaces[self.highest_space].number_spaces.values_mut() {
+2106            path_data.ping_pending = true;
+2107        }
+2108    }
+2109
+2110    /// Ping the remote endpoint over a specific path
+2111    ///
+2112    /// Causes an ACK-eliciting packet to be transmitted on the path.
+2113    pub fn ping_path(&mut self, path: PathId) -> Result<(), ClosedPath> {
+2114        let path_data = self.spaces[self.highest_space]
+2115            .number_spaces
+2116            .get_mut(&path)
+2117            .ok_or(ClosedPath { _private: () })?;
+2118        path_data.ping_pending = true;
+2119        Ok(())
+2120    }
+2121
+2122    /// Update traffic keys spontaneously
+2123    ///
+2124    /// This can be useful for testing key updates, as they otherwise only happen infrequently.
+2125    pub fn force_key_update(&mut self) {
+2126        if !self.state.is_established() {
+2127            debug!("ignoring forced key update in illegal state");
+2128            return;
+2129        }
+2130        if self.prev_crypto.is_some() {
+2131            // We already just updated, or are currently updating, the keys. Concurrent key updates
+2132            // are illegal.
+2133            debug!("ignoring redundant forced key update");
+2134            return;
+2135        }
+2136        self.update_keys(None, false);
+2137    }
+2138
+2139    /// Get a session reference
+2140    pub fn crypto_session(&self) -> &dyn crypto::Session {
+2141        &*self.crypto
+2142    }
+2143
+2144    /// Whether the connection is in the process of being established
+2145    ///
+2146    /// If this returns `false`, the connection may be either established or closed, signaled by the
+2147    /// emission of a `Connected` or `ConnectionLost` message respectively.
+2148    pub fn is_handshaking(&self) -> bool {
+2149        self.state.is_handshake()
+2150    }
+2151
+2152    /// Whether the connection is closed
+2153    ///
+2154    /// Closed connections cannot transport any further data. A connection becomes closed when
+2155    /// either peer application intentionally closes it, or when either transport layer detects an
+2156    /// error such as a time-out or certificate validation failure.
+2157    ///
+2158    /// A `ConnectionLost` event is emitted with details when the connection becomes closed.
+2159    pub fn is_closed(&self) -> bool {
+2160        self.state.is_closed()
+2161    }
+2162
+2163    /// Whether there is no longer any need to keep the connection around
+2164    ///
+2165    /// Closed connections become drained after a brief timeout to absorb any remaining in-flight
+2166    /// packets from the peer. All drained connections have been closed.
+2167    pub fn is_drained(&self) -> bool {
+2168        self.state.is_drained()
+2169    }
+2170
+2171    /// For clients, if the peer accepted the 0-RTT data packets
+2172    ///
+2173    /// The value is meaningless until after the handshake completes.
+2174    pub fn accepted_0rtt(&self) -> bool {
+2175        self.accepted_0rtt
 2176    }
 2177
-2178    /// Returns path statistics
-2179    pub fn path_stats(&mut self, path_id: PathId) -> Option<PathStats> {
-2180        let path = self.paths.get(&path_id)?;
-2181        let stats = self.path_stats.entry(path_id).or_default();
-2182        stats.rtt = path.data.rtt.get();
-2183        stats.cwnd = path.data.congestion.window();
-2184        stats.current_mtu = path.data.mtud.current_mtu();
-2185        Some(*stats)
+2178    /// Whether 0-RTT is/was possible during the handshake
+2179    pub fn has_0rtt(&self) -> bool {
+2180        self.zero_rtt_enabled
+2181    }
+2182
+2183    /// Whether there are any pending retransmits
+2184    pub fn has_pending_retransmits(&self) -> bool {
+2185        !self.spaces[SpaceId::Data].pending.is_empty(&self.streams)
 2186    }
 2187
-2188    /// Ping the remote endpoint
-2189    ///
-2190    /// Causes an ACK-eliciting packet to be transmitted on the connection.
-2191    pub fn ping(&mut self) {
-2192        // TODO(flub): This is very brute-force: it pings *all* the paths.  Instead it would
-2193        //    be nice if we could only send a single packet for this.
-2194        for path_data in self.spaces[self.highest_space].number_spaces.values_mut() {
-2195            path_data.ping_pending = true;
-2196        }
-2197    }
-2198
-2199    /// Ping the remote endpoint over a specific path
-2200    ///
-2201    /// Causes an ACK-eliciting packet to be transmitted on the path.
-2202    pub fn ping_path(&mut self, path: PathId) -> Result<(), ClosedPath> {
-2203        let path_data = self.spaces[self.highest_space]
-2204            .number_spaces
-2205            .get_mut(&path)
-2206            .ok_or(ClosedPath { _private: () })?;
-2207        path_data.ping_pending = true;
-2208        Ok(())
-2209    }
-2210
-2211    /// Update traffic keys spontaneously
-2212    ///
-2213    /// This can be useful for testing key updates, as they otherwise only happen infrequently.
-2214    pub fn force_key_update(&mut self) {
-2215        if !self.state.is_established() {
-2216            debug!("ignoring forced key update in illegal state");
-2217            return;
-2218        }
-2219        if self.prev_crypto.is_some() {
-2220            // We already just updated, or are currently updating, the keys. Concurrent key updates
-2221            // are illegal.
-2222            debug!("ignoring redundant forced key update");
-2223            return;
-2224        }
-2225        self.update_keys(None, false);
-2226    }
-2227
-2228    /// Get a session reference
-2229    pub fn crypto_session(&self) -> &dyn crypto::Session {
-2230        &*self.crypto
-2231    }
-2232
-2233    /// Whether the connection is in the process of being established
-2234    ///
-2235    /// If this returns `false`, the connection may be either established or closed, signaled by the
-2236    /// emission of a `Connected` or `ConnectionLost` message respectively.
-2237    pub fn is_handshaking(&self) -> bool {
-2238        self.state.is_handshake()
-2239    }
-2240
-2241    /// Whether the connection is closed
-2242    ///
-2243    /// Closed connections cannot transport any further data. A connection becomes closed when
-2244    /// either peer application intentionally closes it, or when either transport layer detects an
-2245    /// error such as a time-out or certificate validation failure.
-2246    ///
-2247    /// A `ConnectionLost` event is emitted with details when the connection becomes closed.
-2248    pub fn is_closed(&self) -> bool {
-2249        self.state.is_closed()
-2250    }
-2251
-2252    /// Whether there is no longer any need to keep the connection around
-2253    ///
-2254    /// Closed connections become drained after a brief timeout to absorb any remaining in-flight
-2255    /// packets from the peer. All drained connections have been closed.
-2256    pub fn is_drained(&self) -> bool {
-2257        self.state.is_drained()
-2258    }
-2259
-2260    /// For clients, if the peer accepted the 0-RTT data packets
-2261    ///
-2262    /// The value is meaningless until after the handshake completes.
-2263    pub fn accepted_0rtt(&self) -> bool {
-2264        self.accepted_0rtt
-2265    }
-2266
-2267    /// Whether 0-RTT is/was possible during the handshake
-2268    pub fn has_0rtt(&self) -> bool {
-2269        self.zero_rtt_enabled
-2270    }
-2271
-2272    /// Whether there are any pending retransmits
-2273    pub fn has_pending_retransmits(&self) -> bool {
-2274        !self.spaces[SpaceId::Data].pending.is_empty(&self.streams)
-2275    }
-2276
-2277    /// Look up whether we're the client or server of this Connection
-2278    pub fn side(&self) -> Side {
-2279        self.side.side()
-2280    }
-2281
-2282    /// Get the address observed by the remote over the given path
-2283    pub fn path_observed_address(&self, path_id: PathId) -> Result<Option<SocketAddr>, ClosedPath> {
-2284        self.path(path_id)
-2285            .map(|path_data| {
-2286                path_data
-2287                    .last_observed_addr_report
-2288                    .as_ref()
-2289                    .map(|observed| observed.socket_addr())
-2290            })
-2291            .ok_or(ClosedPath { _private: () })
-2292    }
-2293
-2294    /// Current best estimate of this connection's latency (round-trip-time)
-2295    pub fn rtt(&self, path_id: PathId) -> Option<Duration> {
-2296        self.path(path_id).map(|d| d.rtt.get())
-2297    }
-2298
-2299    /// Current state of this connection's congestion controller, for debugging purposes
-2300    pub fn congestion_state(&self, path_id: PathId) -> Option<&dyn Controller> {
-2301        self.path(path_id).map(|d| d.congestion.as_ref())
-2302    }
-2303
-2304    /// Modify the number of remotely initiated streams that may be concurrently open
-2305    ///
-2306    /// No streams may be opened by the peer unless fewer than `count` are already open. Large
-2307    /// `count`s increase both minimum and worst-case memory consumption.
-2308    pub fn set_max_concurrent_streams(&mut self, dir: Dir, count: VarInt) {
-2309        self.streams.set_max_concurrent(dir, count);
-2310        // If the limit was reduced, then a flow control update previously deemed insignificant may
-2311        // now be significant.
-2312        let pending = &mut self.spaces[SpaceId::Data].pending;
-2313        self.streams.queue_max_stream_id(pending);
-2314    }
-2315
-2316    /// Modify the number of open paths allowed when multipath is enabled
-2317    ///
-2318    /// When reducing the number of concurrent paths this will only affect delaying sending
-2319    /// new MAX_PATH_ID frames until fewer than this number of paths are possible.  To
-2320    /// actively reduce paths they must be closed using [`Connection::close_path`], which
-2321    /// can also be used to close not-yet-opened paths.
-2322    ///
-2323    /// If multipath is not negotiated (see the [`TransportConfig`]) this can not enable
-2324    /// multipath and will fail.
-2325    pub fn set_max_concurrent_paths(
-2326        &mut self,
-2327        now: Instant,
-2328        count: NonZeroU32,
-2329    ) -> Result<(), MultipathNotNegotiated> {
-2330        if !self.is_multipath_negotiated() {
-2331            return Err(MultipathNotNegotiated { _private: () });
-2332        }
-2333        self.max_concurrent_paths = count;
-2334
-2335        let in_use_count = self
-2336            .local_max_path_id
-2337            .next()
-2338            .saturating_sub(self.abandoned_paths.len() as u32)
-2339            .as_u32();
-2340        let extra_needed = count.get().saturating_sub(in_use_count);
-2341        let new_max_path_id = self.local_max_path_id.saturating_add(extra_needed);
-2342
-2343        self.set_max_path_id(now, new_max_path_id);
-2344
-2345        Ok(())
-2346    }
-2347
-2348    /// If needed, issues a new MAX_PATH_ID frame and new CIDs for any newly allowed paths
-2349    fn set_max_path_id(&mut self, now: Instant, max_path_id: PathId) {
-2350        if max_path_id <= self.local_max_path_id {
-2351            return;
-2352        }
-2353
-2354        self.local_max_path_id = max_path_id;
-2355        self.spaces[SpaceId::Data].pending.max_path_id = true;
-2356
-2357        self.issue_first_path_cids(now);
-2358    }
-2359
-2360    /// Current number of remotely initiated streams that may be concurrently open
-2361    ///
-2362    /// If the target for this limit is reduced using [`set_max_concurrent_streams`](Self::set_max_concurrent_streams),
-2363    /// it will not change immediately, even if fewer streams are open. Instead, it will
-2364    /// decrement by one for each time a remotely initiated stream of matching directionality is closed.
-2365    pub fn max_concurrent_streams(&self, dir: Dir) -> u64 {
-2366        self.streams.max_concurrent(dir)
-2367    }
-2368
-2369    /// See [`TransportConfig::send_window()`]
-2370    pub fn set_send_window(&mut self, send_window: u64) {
-2371        self.streams.set_send_window(send_window);
-2372    }
-2373
-2374    /// See [`TransportConfig::receive_window()`]
-2375    pub fn set_receive_window(&mut self, receive_window: VarInt) {
-2376        if self.streams.set_receive_window(receive_window) {
-2377            self.spaces[SpaceId::Data].pending.max_data = true;
-2378        }
-2379    }
-2380
-2381    /// Whether the Multipath for QUIC extension is enabled.
-2382    ///
-2383    /// Multipath is only enabled after the handshake is completed and if it was enabled by both
-2384    /// peers.
-2385    pub fn is_multipath_negotiated(&self) -> bool {
-2386        !self.is_handshaking()
-2387            && self.config.max_concurrent_multipath_paths.is_some()
-2388            && self.peer_params.initial_max_path_id.is_some()
-2389    }
-2390
-2391    fn on_ack_received(
-2392        &mut self,
-2393        now: Instant,
-2394        space: SpaceId,
-2395        ack: frame::Ack,
-2396    ) -> Result<(), TransportError> {
-2397        // All ACKs are referencing path 0
-2398        let path = PathId::ZERO;
-2399        self.inner_on_ack_received(now, space, path, ack)
-2400    }
-2401
-2402    fn on_path_ack_received(
-2403        &mut self,
-2404        now: Instant,
-2405        space: SpaceId,
-2406        path_ack: frame::PathAck,
-2407    ) -> Result<(), TransportError> {
-2408        let (ack, path) = path_ack.into_ack();
-2409        self.inner_on_ack_received(now, space, path, ack)
-2410    }
-2411
-2412    /// Handles an ACK frame acknowledging packets sent on *path*.
-2413    fn inner_on_ack_received(
-2414        &mut self,
-2415        now: Instant,
-2416        space: SpaceId,
-2417        path: PathId,
-2418        ack: frame::Ack,
-2419    ) -> Result<(), TransportError> {
-2420        if self.abandoned_paths.contains(&path) {
-2421            // See also https://www.ietf.org/archive/id/draft-ietf-quic-multipath-17.html#section-3.4.3-3
-2422            // > PATH_ACK frames received with an abandoned path ID are silently ignored, as specified in Section 4.
-2423            trace!("silently ignoring PATH_ACK on abandoned path");
-2424            return Ok(());
-2425        }
-2426        if ack.largest >= self.spaces[space].for_path(path).next_packet_number {
-2427            return Err(TransportError::PROTOCOL_VIOLATION("unsent packet acked"));
-2428        }
-2429        let new_largest = {
-2430            let space = &mut self.spaces[space].for_path(path);
-2431            if space.largest_acked_packet.is_none_or(|pn| ack.largest > pn) {
-2432                space.largest_acked_packet = Some(ack.largest);
-2433                if let Some(info) = space.sent_packets.get(ack.largest) {
-2434                    // This should always succeed, but a misbehaving peer might ACK a packet we
-2435                    // haven't sent. At worst, that will result in us spuriously reducing the
-2436                    // congestion window.
-2437                    space.largest_acked_packet_sent = info.time_sent;
-2438                }
-2439                true
-2440            } else {
-2441                false
-2442            }
-2443        };
-2444
-2445        if self.detect_spurious_loss(&ack, space, path) {
-2446            self.path_data_mut(path)
-2447                .congestion
-2448                .on_spurious_congestion_event();
-2449        }
-2450
-2451        // Avoid DoS from unreasonably huge ack ranges by filtering out just the new acks.
-2452        let mut newly_acked = ArrayRangeSet::new();
-2453        for range in ack.iter() {
-2454            self.spaces[space].for_path(path).check_ack(range.clone())?;
-2455            for (pn, _) in self.spaces[space]
-2456                .for_path(path)
-2457                .sent_packets
-2458                .iter_range(range)
-2459            {
-2460                newly_acked.insert_one(pn);
-2461            }
-2462        }
-2463
-2464        if newly_acked.is_empty() {
-2465            return Ok(());
-2466        }
-2467
-2468        let mut ack_eliciting_acked = false;
-2469        for packet in newly_acked.elts() {
-2470            if let Some(info) = self.spaces[space].for_path(path).take(packet) {
-2471                for (acked_path_id, acked_pn) in info.largest_acked.iter() {
-2472                    // Assume ACKs for all packets below the largest acknowledged in
-2473                    // `packet` have been received. This can cause the peer to spuriously
-2474                    // retransmit if some of our earlier ACKs were lost, but allows for
-2475                    // simpler state tracking. See discussion at
-2476                    // https://www.rfc-editor.org/rfc/rfc9000.html#name-limiting-ranges-by-tracking
-2477                    if let Some(pns) = self.spaces[space].path_space_mut(*acked_path_id) {
-2478                        pns.pending_acks.subtract_below(*acked_pn);
-2479                    }
-2480                }
-2481                ack_eliciting_acked |= info.ack_eliciting;
-2482
-2483                // Notify MTU discovery that a packet was acked, because it might be an MTU probe
-2484                let path_data = self.path_data_mut(path);
-2485                let mtu_updated = path_data.mtud.on_acked(space, packet, info.size);
-2486                if mtu_updated {
-2487                    path_data
-2488                        .congestion
-2489                        .on_mtu_update(path_data.mtud.current_mtu());
-2490                }
-2491
-2492                // Notify ack frequency that a packet was acked, because it might contain an ACK_FREQUENCY frame
-2493                self.ack_frequency.on_acked(path, packet);
-2494
-2495                self.on_packet_acked(now, path, info);
-2496            }
-2497        }
-2498
-2499        let largest_ackd = self.spaces[space].for_path(path).largest_acked_packet;
-2500        let app_limited = self.app_limited;
-2501        let path_data = self.path_data_mut(path);
-2502        let in_flight = path_data.in_flight.bytes;
-2503
-2504        path_data
-2505            .congestion
-2506            .on_end_acks(now, in_flight, app_limited, largest_ackd);
-2507
-2508        if new_largest && ack_eliciting_acked {
-2509            let ack_delay = if space != SpaceId::Data {
-2510                Duration::from_micros(0)
-2511            } else {
-2512                cmp::min(
-2513                    self.ack_frequency.peer_max_ack_delay,
-2514                    Duration::from_micros(ack.delay << self.peer_params.ack_delay_exponent.0),
-2515                )
-2516            };
-2517            let rtt = now.saturating_duration_since(
-2518                self.spaces[space].for_path(path).largest_acked_packet_sent,
-2519            );
-2520
-2521            let next_pn = self.spaces[space].for_path(path).next_packet_number;
-2522            let path_data = self.path_data_mut(path);
-2523            // TODO(@divma): should be a method of path, should be contained in a single place
-2524            path_data.rtt.update(ack_delay, rtt);
-2525            if path_data.first_packet_after_rtt_sample.is_none() {
-2526                path_data.first_packet_after_rtt_sample = Some((space, next_pn));
-2527            }
-2528        }
-2529
-2530        // Must be called before crypto/pto_count are clobbered
-2531        self.detect_lost_packets(now, space, path, true);
-2532
-2533        if self.peer_completed_address_validation(path) {
-2534            self.path_data_mut(path).pto_count = 0;
-2535        }
-2536
-2537        // Explicit congestion notification
-2538        // TODO(@divma): this code is a good example of logic that should be contained in a single
-2539        // place but it's split between the path data and the packet number space data, we should
-2540        // find a way to make this work without two lookups
-2541        if self.path_data(path).sending_ecn {
-2542            if let Some(ecn) = ack.ecn {
-2543                // We only examine ECN counters from ACKs that we are certain we received in transmit
-2544                // order, allowing us to compute an increase in ECN counts to compare against the number
-2545                // of newly acked packets that remains well-defined in the presence of arbitrary packet
-2546                // reordering.
-2547                if new_largest {
-2548                    let sent = self.spaces[space].for_path(path).largest_acked_packet_sent;
-2549                    self.process_ecn(now, space, path, newly_acked.len() as u64, ecn, sent);
-2550                }
-2551            } else {
-2552                // We always start out sending ECN, so any ack that doesn't acknowledge it disables it.
-2553                debug!("ECN not acknowledged by peer");
-2554                self.path_data_mut(path).sending_ecn = false;
-2555            }
-2556        }
-2557
-2558        self.set_loss_detection_timer(now, path);
-2559        Ok(())
-2560    }
+2188    /// Look up whether we're the client or server of this Connection
+2189    pub fn side(&self) -> Side {
+2190        self.side.side()
+2191    }
+2192
+2193    /// Get the address observed by the remote over the given path
+2194    pub fn path_observed_address(&self, path_id: PathId) -> Result<Option<SocketAddr>, ClosedPath> {
+2195        self.path(path_id)
+2196            .map(|path_data| {
+2197                path_data
+2198                    .last_observed_addr_report
+2199                    .as_ref()
+2200                    .map(|observed| observed.socket_addr())
+2201            })
+2202            .ok_or(ClosedPath { _private: () })
+2203    }
+2204
+2205    /// Current best estimate of this connection's latency (round-trip-time)
+2206    pub fn rtt(&self, path_id: PathId) -> Option<Duration> {
+2207        self.path(path_id).map(|d| d.rtt.get())
+2208    }
+2209
+2210    /// Current state of this connection's congestion controller, for debugging purposes
+2211    pub fn congestion_state(&self, path_id: PathId) -> Option<&dyn Controller> {
+2212        self.path(path_id).map(|d| d.congestion.as_ref())
+2213    }
+2214
+2215    /// Modify the number of remotely initiated streams that may be concurrently open
+2216    ///
+2217    /// No streams may be opened by the peer unless fewer than `count` are already open. Large
+2218    /// `count`s increase both minimum and worst-case memory consumption.
+2219    pub fn set_max_concurrent_streams(&mut self, dir: Dir, count: VarInt) {
+2220        self.streams.set_max_concurrent(dir, count);
+2221        // If the limit was reduced, then a flow control update previously deemed insignificant may
+2222        // now be significant.
+2223        let pending = &mut self.spaces[SpaceId::Data].pending;
+2224        self.streams.queue_max_stream_id(pending);
+2225    }
+2226
+2227    /// Modify the number of open paths allowed when multipath is enabled
+2228    ///
+2229    /// When reducing the number of concurrent paths this will only affect delaying sending
+2230    /// new MAX_PATH_ID frames until fewer than this number of paths are possible.  To
+2231    /// actively reduce paths they must be closed using [`Connection::close_path`], which
+2232    /// can also be used to close not-yet-opened paths.
+2233    ///
+2234    /// If multipath is not negotiated (see the [`TransportConfig`]) this can not enable
+2235    /// multipath and will fail.
+2236    pub fn set_max_concurrent_paths(
+2237        &mut self,
+2238        now: Instant,
+2239        count: NonZeroU32,
+2240    ) -> Result<(), MultipathNotNegotiated> {
+2241        if !self.is_multipath_negotiated() {
+2242            return Err(MultipathNotNegotiated { _private: () });
+2243        }
+2244        self.max_concurrent_paths = count;
+2245
+2246        let in_use_count = self
+2247            .local_max_path_id
+2248            .next()
+2249            .saturating_sub(self.abandoned_paths.len() as u32)
+2250            .as_u32();
+2251        let extra_needed = count.get().saturating_sub(in_use_count);
+2252        let new_max_path_id = self.local_max_path_id.saturating_add(extra_needed);
+2253
+2254        self.set_max_path_id(now, new_max_path_id);
+2255
+2256        Ok(())
+2257    }
+2258
+2259    /// If needed, issues a new MAX_PATH_ID frame and new CIDs for any newly allowed paths
+2260    fn set_max_path_id(&mut self, now: Instant, max_path_id: PathId) {
+2261        if max_path_id <= self.local_max_path_id {
+2262            return;
+2263        }
+2264
+2265        self.local_max_path_id = max_path_id;
+2266        self.spaces[SpaceId::Data].pending.max_path_id = true;
+2267
+2268        self.issue_first_path_cids(now);
+2269    }
+2270
+2271    /// Current number of remotely initiated streams that may be concurrently open
+2272    ///
+2273    /// If the target for this limit is reduced using [`set_max_concurrent_streams`](Self::set_max_concurrent_streams),
+2274    /// it will not change immediately, even if fewer streams are open. Instead, it will
+2275    /// decrement by one for each time a remotely initiated stream of matching directionality is closed.
+2276    pub fn max_concurrent_streams(&self, dir: Dir) -> u64 {
+2277        self.streams.max_concurrent(dir)
+2278    }
+2279
+2280    /// See [`TransportConfig::send_window()`]
+2281    pub fn set_send_window(&mut self, send_window: u64) {
+2282        self.streams.set_send_window(send_window);
+2283    }
+2284
+2285    /// See [`TransportConfig::receive_window()`]
+2286    pub fn set_receive_window(&mut self, receive_window: VarInt) {
+2287        if self.streams.set_receive_window(receive_window) {
+2288            self.spaces[SpaceId::Data].pending.max_data = true;
+2289        }
+2290    }
+2291
+2292    /// Whether the Multipath for QUIC extension is enabled.
+2293    ///
+2294    /// Multipath is only enabled after the handshake is completed and if it was enabled by both
+2295    /// peers.
+2296    pub fn is_multipath_negotiated(&self) -> bool {
+2297        !self.is_handshaking()
+2298            && self.config.max_concurrent_multipath_paths.is_some()
+2299            && self.peer_params.initial_max_path_id.is_some()
+2300    }
+2301
+2302    fn on_ack_received(
+2303        &mut self,
+2304        now: Instant,
+2305        space: SpaceId,
+2306        ack: frame::Ack,
+2307    ) -> Result<(), TransportError> {
+2308        // All ACKs are referencing path 0
+2309        let path = PathId::ZERO;
+2310        self.inner_on_ack_received(now, space, path, ack)
+2311    }
+2312
+2313    fn on_path_ack_received(
+2314        &mut self,
+2315        now: Instant,
+2316        space: SpaceId,
+2317        path_ack: frame::PathAck,
+2318    ) -> Result<(), TransportError> {
+2319        let (ack, path) = path_ack.into_ack();
+2320        self.inner_on_ack_received(now, space, path, ack)
+2321    }
+2322
+2323    /// Handles an ACK frame acknowledging packets sent on *path*.
+2324    fn inner_on_ack_received(
+2325        &mut self,
+2326        now: Instant,
+2327        space: SpaceId,
+2328        path: PathId,
+2329        ack: frame::Ack,
+2330    ) -> Result<(), TransportError> {
+2331        if self.abandoned_paths.contains(&path) {
+2332            // See also https://www.ietf.org/archive/id/draft-ietf-quic-multipath-17.html#section-3.4.3-3
+2333            // > PATH_ACK frames received with an abandoned path ID are silently ignored, as specified in Section 4.
+2334            trace!("silently ignoring PATH_ACK on abandoned path");
+2335            return Ok(());
+2336        }
+2337        if ack.largest >= self.spaces[space].for_path(path).next_packet_number {
+2338            return Err(TransportError::PROTOCOL_VIOLATION("unsent packet acked"));
+2339        }
+2340        let new_largest = {
+2341            let space = &mut self.spaces[space].for_path(path);
+2342            if space.largest_acked_packet.is_none_or(|pn| ack.largest > pn) {
+2343                space.largest_acked_packet = Some(ack.largest);
+2344                if let Some(info) = space.sent_packets.get(ack.largest) {
+2345                    // This should always succeed, but a misbehaving peer might ACK a packet we
+2346                    // haven't sent. At worst, that will result in us spuriously reducing the
+2347                    // congestion window.
+2348                    space.largest_acked_packet_sent = info.time_sent;
+2349                }
+2350                true
+2351            } else {
+2352                false
+2353            }
+2354        };
+2355
+2356        if self.detect_spurious_loss(&ack, space, path) {
+2357            self.path_data_mut(path)
+2358                .congestion
+2359                .on_spurious_congestion_event();
+2360        }
+2361
+2362        // Avoid DoS from unreasonably huge ack ranges by filtering out just the new acks.
+2363        let mut newly_acked = ArrayRangeSet::new();
+2364        for range in ack.iter() {
+2365            self.spaces[space].for_path(path).check_ack(range.clone())?;
+2366            for (pn, _) in self.spaces[space]
+2367                .for_path(path)
+2368                .sent_packets
+2369                .iter_range(range)
+2370            {
+2371                newly_acked.insert_one(pn);
+2372            }
+2373        }
+2374
+2375        if newly_acked.is_empty() {
+2376            return Ok(());
+2377        }
+2378
+2379        let mut ack_eliciting_acked = false;
+2380        for packet in newly_acked.elts() {
+2381            if let Some(info) = self.spaces[space].for_path(path).take(packet) {
+2382                for (acked_path_id, acked_pn) in info.largest_acked.iter() {
+2383                    // Assume ACKs for all packets below the largest acknowledged in
+2384                    // `packet` have been received. This can cause the peer to spuriously
+2385                    // retransmit if some of our earlier ACKs were lost, but allows for
+2386                    // simpler state tracking. See discussion at
+2387                    // https://www.rfc-editor.org/rfc/rfc9000.html#name-limiting-ranges-by-tracking
+2388                    if let Some(pns) = self.spaces[space].path_space_mut(*acked_path_id) {
+2389                        pns.pending_acks.subtract_below(*acked_pn);
+2390                    }
+2391                }
+2392                ack_eliciting_acked |= info.ack_eliciting;
+2393
+2394                // Notify MTU discovery that a packet was acked, because it might be an MTU probe
+2395                let path_data = self.path_data_mut(path);
+2396                let mtu_updated = path_data.mtud.on_acked(space, packet, info.size);
+2397                if mtu_updated {
+2398                    path_data
+2399                        .congestion
+2400                        .on_mtu_update(path_data.mtud.current_mtu());
+2401                }
+2402
+2403                // Notify ack frequency that a packet was acked, because it might contain an ACK_FREQUENCY frame
+2404                self.ack_frequency.on_acked(path, packet);
+2405
+2406                self.on_packet_acked(now, path, info);
+2407            }
+2408        }
+2409
+2410        let largest_ackd = self.spaces[space].for_path(path).largest_acked_packet;
+2411        let app_limited = self.app_limited;
+2412        let path_data = self.path_data_mut(path);
+2413        let in_flight = path_data.in_flight.bytes;
+2414
+2415        path_data
+2416            .congestion
+2417            .on_end_acks(now, in_flight, app_limited, largest_ackd);
+2418
+2419        if new_largest && ack_eliciting_acked {
+2420            let ack_delay = if space != SpaceId::Data {
+2421                Duration::from_micros(0)
+2422            } else {
+2423                cmp::min(
+2424                    self.ack_frequency.peer_max_ack_delay,
+2425                    Duration::from_micros(ack.delay << self.peer_params.ack_delay_exponent.0),
+2426                )
+2427            };
+2428            let rtt = now.saturating_duration_since(
+2429                self.spaces[space].for_path(path).largest_acked_packet_sent,
+2430            );
+2431
+2432            let next_pn = self.spaces[space].for_path(path).next_packet_number;
+2433            let path_data = self.path_data_mut(path);
+2434            // TODO(@divma): should be a method of path, should be contained in a single place
+2435            path_data.rtt.update(ack_delay, rtt);
+2436            if path_data.first_packet_after_rtt_sample.is_none() {
+2437                path_data.first_packet_after_rtt_sample = Some((space, next_pn));
+2438            }
+2439        }
+2440
+2441        // Must be called before crypto/pto_count are clobbered
+2442        self.detect_lost_packets(now, space, path, true);
+2443
+2444        if self.peer_completed_address_validation(path) {
+2445            self.path_data_mut(path).pto_count = 0;
+2446        }
+2447
+2448        // Explicit congestion notification
+2449        // TODO(@divma): this code is a good example of logic that should be contained in a single
+2450        // place but it's split between the path data and the packet number space data, we should
+2451        // find a way to make this work without two lookups
+2452        if self.path_data(path).sending_ecn {
+2453            if let Some(ecn) = ack.ecn {
+2454                // We only examine ECN counters from ACKs that we are certain we received in transmit
+2455                // order, allowing us to compute an increase in ECN counts to compare against the number
+2456                // of newly acked packets that remains well-defined in the presence of arbitrary packet
+2457                // reordering.
+2458                if new_largest {
+2459                    let sent = self.spaces[space].for_path(path).largest_acked_packet_sent;
+2460                    self.process_ecn(now, space, path, newly_acked.len() as u64, ecn, sent);
+2461                }
+2462            } else {
+2463                // We always start out sending ECN, so any ack that doesn't acknowledge it disables it.
+2464                debug!("ECN not acknowledged by peer");
+2465                self.path_data_mut(path).sending_ecn = false;
+2466            }
+2467        }
+2468
+2469        self.set_loss_detection_timer(now, path);
+2470        Ok(())
+2471    }
+2472
+2473    fn detect_spurious_loss(&mut self, ack: &frame::Ack, space: SpaceId, path: PathId) -> bool {
+2474        let lost_packets = &mut self.spaces[space].for_path(path).lost_packets;
+2475
+2476        if lost_packets.is_empty() {
+2477            return false;
+2478        }
+2479
+2480        for range in ack.iter() {
+2481            let spurious_losses: Vec<u64> = lost_packets
+2482                .iter_range(range.clone())
+2483                .map(|(pn, _info)| pn)
+2484                .collect();
+2485
+2486            for pn in spurious_losses {
+2487                lost_packets.remove(pn);
+2488            }
+2489        }
+2490
+2491        // If this ACK frame acknowledged all deemed lost packets,
+2492        // then we have raised a spurious congestion event in the past.
+2493        // We cannot conclude when there are remaining packets,
+2494        // but future ACK frames might indicate a spurious loss detection.
+2495        lost_packets.is_empty()
+2496    }
+2497
+2498    /// Drain lost packets that we reasonably think will never arrive
+2499    ///
+2500    /// The current criterion is copied from `msquic`:
+2501    /// discard packets that were sent earlier than 2 probe timeouts ago.
+2502    fn drain_lost_packets(&mut self, now: Instant, space: SpaceId, path: PathId) {
+2503        let two_pto = 2 * self.path_data(path).rtt.pto_base();
+2504
+2505        let lost_packets = &mut self.spaces[space].for_path(path).lost_packets;
+2506        lost_packets.retain(|_pn, info| now.saturating_duration_since(info.time_sent) <= two_pto);
+2507    }
+2508
+2509    /// Process a new ECN block from an in-order ACK
+2510    fn process_ecn(
+2511        &mut self,
+2512        now: Instant,
+2513        space: SpaceId,
+2514        path: PathId,
+2515        newly_acked: u64,
+2516        ecn: frame::EcnCounts,
+2517        largest_sent_time: Instant,
+2518    ) {
+2519        match self.spaces[space]
+2520            .for_path(path)
+2521            .detect_ecn(newly_acked, ecn)
+2522        {
+2523            Err(e) => {
+2524                debug!("halting ECN due to verification failure: {}", e);
+2525
+2526                self.path_data_mut(path).sending_ecn = false;
+2527                // Wipe out the existing value because it might be garbage and could interfere with
+2528                // future attempts to use ECN on new paths.
+2529                self.spaces[space].for_path(path).ecn_feedback = frame::EcnCounts::ZERO;
+2530            }
+2531            Ok(false) => {}
+2532            Ok(true) => {
+2533                self.path_stats.entry(path).or_default().congestion_events += 1;
+2534                self.path_data_mut(path).congestion.on_congestion_event(
+2535                    now,
+2536                    largest_sent_time,
+2537                    false,
+2538                    true,
+2539                    0,
+2540                );
+2541            }
+2542        }
+2543    }
+2544
+2545    // Not timing-aware, so it's safe to call this for inferred acks, such as arise from
+2546    // high-latency handshakes
+2547    fn on_packet_acked(&mut self, now: Instant, path_id: PathId, info: SentPacket) {
+2548        self.paths
+2549            .get_mut(&path_id)
+2550            .expect("known path")
+2551            .remove_in_flight(&info);
+2552        let app_limited = self.app_limited;
+2553        let path = self.path_data_mut(path_id);
+2554        if info.ack_eliciting && !path.is_validating_path() {
+2555            // Only pass ACKs to the congestion controller if we are not validating the current
+2556            // path, so as to ignore any ACKs from older paths still coming in.
+2557            let rtt = path.rtt;
+2558            path.congestion
+2559                .on_ack(now, info.time_sent, info.size.into(), app_limited, &rtt);
+2560        }
 2561
-2562    fn detect_spurious_loss(&mut self, ack: &frame::Ack, space: SpaceId, path: PathId) -> bool {
-2563        let lost_packets = &mut self.spaces[space].for_path(path).lost_packets;
-2564
-2565        if lost_packets.is_empty() {
-2566            return false;
+2562        // Update state for confirmed delivery of frames
+2563        if let Some(retransmits) = info.retransmits.get() {
+2564            for (id, _) in retransmits.reset_stream.iter() {
+2565                self.streams.reset_acked(*id);
+2566            }
 2567        }
 2568
-2569        for range in ack.iter() {
-2570            let spurious_losses: Vec<u64> = lost_packets
-2571                .iter_range(range.clone())
-2572                .map(|(pn, _info)| pn)
-2573                .collect();
-2574
-2575            for pn in spurious_losses {
-2576                lost_packets.remove(pn);
-2577            }
-2578        }
-2579
-2580        // If this ACK frame acknowledged all deemed lost packets,
-2581        // then we have raised a spurious congestion event in the past.
-2582        // We cannot conclude when there are remaining packets,
-2583        // but future ACK frames might indicate a spurious loss detection.
-2584        lost_packets.is_empty()
-2585    }
+2569        for frame in info.stream_frames {
+2570            self.streams.received_ack_of(frame);
+2571        }
+2572    }
+2573
+2574    fn set_key_discard_timer(&mut self, now: Instant, space: SpaceId) {
+2575        let start = if self.zero_rtt_crypto.is_some() {
+2576            now
+2577        } else {
+2578            self.prev_crypto
+2579                .as_ref()
+2580                .expect("no previous keys")
+2581                .end_packet
+2582                .as_ref()
+2583                .expect("update not acknowledged yet")
+2584                .1
+2585        };
 2586
-2587    /// Drain lost packets that we reasonably think will never arrive
-2588    ///
-2589    /// The current criterion is copied from `msquic`:
-2590    /// discard packets that were sent earlier than 2 probe timeouts ago.
-2591    fn drain_lost_packets(&mut self, now: Instant, space: SpaceId, path: PathId) {
-2592        let two_pto = 2 * self.path_data(path).rtt.pto_base();
-2593
-2594        let lost_packets = &mut self.spaces[space].for_path(path).lost_packets;
-2595        lost_packets.retain(|_pn, info| now.saturating_duration_since(info.time_sent) <= two_pto);
-2596    }
-2597
-2598    /// Process a new ECN block from an in-order ACK
-2599    fn process_ecn(
-2600        &mut self,
-2601        now: Instant,
-2602        space: SpaceId,
-2603        path: PathId,
-2604        newly_acked: u64,
-2605        ecn: frame::EcnCounts,
-2606        largest_sent_time: Instant,
-2607    ) {
-2608        match self.spaces[space]
-2609            .for_path(path)
-2610            .detect_ecn(newly_acked, ecn)
-2611        {
-2612            Err(e) => {
-2613                debug!("halting ECN due to verification failure: {}", e);
+2587        // QUIC-MULTIPATH § 2.5 Key Phase Update Process: use largest PTO off all paths.
+2588        self.timers.set(
+2589            Timer::Conn(ConnTimer::KeyDiscard),
+2590            start + self.pto_max_path(space, false) * 3,
+2591            self.qlog.with_time(now),
+2592        );
+2593    }
+2594
+2595    /// Handle a [`PathTimer::LossDetection`] timeout.
+2596    ///
+2597    /// This timer expires for two reasons:
+2598    /// - An ACK-eliciting packet we sent should be considered lost.
+2599    /// - The PTO may have expired and a tail-loss probe needs to be scheduled.
+2600    ///
+2601    /// The former needs us to schedule re-transmission of the lost data.
+2602    ///
+2603    /// The latter means we have not received an ACK for an ack-eliciting packet we sent
+2604    /// within the PTO time-window. We need to schedule a tail-loss probe, an ack-eliciting
+2605    /// packet, to try and elicit new acknowledgements. These new acknowledgements will
+2606    /// indicate whether the previously sent packets were lost or not.
+2607    fn on_loss_detection_timeout(&mut self, now: Instant, path_id: PathId) {
+2608        if let Some((_, pn_space)) = self.loss_time_and_space(path_id) {
+2609            // Time threshold loss Detection
+2610            self.detect_lost_packets(now, pn_space, path_id, false);
+2611            self.set_loss_detection_timer(now, path_id);
+2612            return;
+2613        }
 2614
-2615                self.path_data_mut(path).sending_ecn = false;
-2616                // Wipe out the existing value because it might be garbage and could interfere with
-2617                // future attempts to use ECN on new paths.
-2618                self.spaces[space].for_path(path).ecn_feedback = frame::EcnCounts::ZERO;
-2619            }
-2620            Ok(false) => {}
-2621            Ok(true) => {
-2622                self.path_stats.entry(path).or_default().congestion_events += 1;
-2623                self.path_data_mut(path).congestion.on_congestion_event(
-2624                    now,
-2625                    largest_sent_time,
-2626                    false,
-2627                    true,
-2628                    0,
-2629                );
-2630            }
-2631        }
-2632    }
-2633
-2634    // Not timing-aware, so it's safe to call this for inferred acks, such as arise from
-2635    // high-latency handshakes
-2636    fn on_packet_acked(&mut self, now: Instant, path_id: PathId, info: SentPacket) {
-2637        self.paths
-2638            .get_mut(&path_id)
-2639            .expect("known path")
-2640            .remove_in_flight(&info);
-2641        let app_limited = self.app_limited;
-2642        let path = self.path_data_mut(path_id);
-2643        if info.ack_eliciting && !path.is_validating_path() {
-2644            // Only pass ACKs to the congestion controller if we are not validating the current
-2645            // path, so as to ignore any ACKs from older paths still coming in.
-2646            let rtt = path.rtt;
-2647            path.congestion
-2648                .on_ack(now, info.time_sent, info.size.into(), app_limited, &rtt);
-2649        }
-2650
-2651        // Update state for confirmed delivery of frames
-2652        if let Some(retransmits) = info.retransmits.get() {
-2653            for (id, _) in retransmits.reset_stream.iter() {
-2654                self.streams.reset_acked(*id);
-2655            }
-2656        }
-2657
-2658        for frame in info.stream_frames {
-2659            self.streams.received_ack_of(frame);
-2660        }
-2661    }
-2662
-2663    fn set_key_discard_timer(&mut self, now: Instant, space: SpaceId) {
-2664        let start = if self.zero_rtt_crypto.is_some() {
-2665            now
-2666        } else {
-2667            self.prev_crypto
-2668                .as_ref()
-2669                .expect("no previous keys")
-2670                .end_packet
-2671                .as_ref()
-2672                .expect("update not acknowledged yet")
-2673                .1
-2674        };
+2615        let (_, space) = match self.pto_time_and_space(now, path_id) {
+2616            Some(x) => x,
+2617            None => {
+2618                error!(%path_id, "PTO expired while unset");
+2619                return;
+2620            }
+2621        };
+2622        trace!(
+2623            in_flight = self.path_data(path_id).in_flight.bytes,
+2624            count = self.path_data(path_id).pto_count,
+2625            ?space,
+2626            %path_id,
+2627            "PTO fired"
+2628        );
+2629
+2630        let count = match self.path_data(path_id).in_flight.ack_eliciting {
+2631            // A PTO when we're not expecting any ACKs must be due to handshake anti-amplification
+2632            // deadlock preventions
+2633            0 => {
+2634                debug_assert!(!self.peer_completed_address_validation(path_id));
+2635                1
+2636            }
+2637            // Conventional loss probe
+2638            _ => 2,
+2639        };
+2640        let pns = self.spaces[space].for_path(path_id);
+2641        pns.loss_probes = pns.loss_probes.saturating_add(count);
+2642        let path_data = self.path_data_mut(path_id);
+2643        path_data.pto_count = path_data.pto_count.saturating_add(1);
+2644        self.set_loss_detection_timer(now, path_id);
+2645    }
+2646
+2647    /// Detect any lost packets
+2648    ///
+2649    /// There are two cases in which we detects lost packets:
+2650    ///
+2651    /// - We received an ACK packet.
+2652    /// - The [`PathTimer::LossDetection`] timer expired. So there is an un-acknowledged packet
+2653    ///   that was followed by an acknowledged packet. The loss timer for this
+2654    ///   un-acknowledged packet expired and we need to detect that packet as lost.
+2655    ///
+2656    /// Packets are lost if they are both (See RFC9002 §6.1):
+2657    ///
+2658    /// - Unacknowledged, in flight and sent prior to an acknowledged packet.
+2659    /// - Old enough by either:
+2660    ///   - Having a packet number [`TransportConfig::packet_threshold`] lower then the last
+2661    ///     acknowledged packet.
+2662    ///   - Being sent [`TransportConfig::time_threshold`] * RTT in the past.
+2663    fn detect_lost_packets(
+2664        &mut self,
+2665        now: Instant,
+2666        pn_space: SpaceId,
+2667        path_id: PathId,
+2668        due_to_ack: bool,
+2669    ) {
+2670        let mut lost_packets = Vec::<u64>::new();
+2671        let mut lost_mtu_probe = None;
+2672        let mut in_persistent_congestion = false;
+2673        let mut size_of_lost_packets = 0u64;
+2674        self.spaces[pn_space].for_path(path_id).loss_time = None;
 2675
-2676        // QUIC-MULTIPATH § 2.5 Key Phase Update Process: use largest PTO off all paths.
-2677        self.timers.set(
-2678            Timer::Conn(ConnTimer::KeyDiscard),
-2679            start + self.pto_max_path(space, false) * 3,
-2680            self.qlog.with_time(now),
-2681        );
-2682    }
-2683
-2684    /// Handle a [`PathTimer::LossDetection`] timeout.
-2685    ///
-2686    /// This timer expires for two reasons:
-2687    /// - An ACK-eliciting packet we sent should be considered lost.
-2688    /// - The PTO may have expired and a tail-loss probe needs to be scheduled.
-2689    ///
-2690    /// The former needs us to schedule re-transmission of the lost data.
-2691    ///
-2692    /// The latter means we have not received an ACK for an ack-eliciting packet we sent
-2693    /// within the PTO time-window. We need to schedule a tail-loss probe, an ack-eliciting
-2694    /// packet, to try and elicit new acknowledgements. These new acknowledgements will
-2695    /// indicate whether the previously sent packets were lost or not.
-2696    fn on_loss_detection_timeout(&mut self, now: Instant, path_id: PathId) {
-2697        if let Some((_, pn_space)) = self.loss_time_and_space(path_id) {
-2698            // Time threshold loss Detection
-2699            self.detect_lost_packets(now, pn_space, path_id, false);
-2700            self.set_loss_detection_timer(now, path_id);
-2701            return;
-2702        }
-2703
-2704        let (_, space) = match self.pto_time_and_space(now, path_id) {
-2705            Some(x) => x,
-2706            None => {
-2707                error!(%path_id, "PTO expired while unset");
-2708                return;
-2709            }
-2710        };
-2711        trace!(
-2712            in_flight = self.path_data(path_id).in_flight.bytes,
-2713            count = self.path_data(path_id).pto_count,
-2714            ?space,
-2715            %path_id,
-2716            "PTO fired"
-2717        );
-2718
-2719        let count = match self.path_data(path_id).in_flight.ack_eliciting {
-2720            // A PTO when we're not expecting any ACKs must be due to handshake anti-amplification
-2721            // deadlock preventions
-2722            0 => {
-2723                debug_assert!(!self.peer_completed_address_validation(path_id));
-2724                1
-2725            }
-2726            // Conventional loss probe
-2727            _ => 2,
-2728        };
-2729        let pns = self.spaces[space].for_path(path_id);
-2730        pns.loss_probes = pns.loss_probes.saturating_add(count);
-2731        let path_data = self.path_data_mut(path_id);
-2732        path_data.pto_count = path_data.pto_count.saturating_add(1);
-2733        self.set_loss_detection_timer(now, path_id);
-2734    }
-2735
-2736    /// Detect any lost packets
-2737    ///
-2738    /// There are two cases in which we detects lost packets:
-2739    ///
-2740    /// - We received an ACK packet.
-2741    /// - The [`PathTimer::LossDetection`] timer expired. So there is an un-acknowledged packet
-2742    ///   that was followed by an acknowledged packet. The loss timer for this
-2743    ///   un-acknowledged packet expired and we need to detect that packet as lost.
-2744    ///
-2745    /// Packets are lost if they are both (See RFC9002 §6.1):
-2746    ///
-2747    /// - Unacknowledged, in flight and sent prior to an acknowledged packet.
-2748    /// - Old enough by either:
-2749    ///   - Having a packet number [`TransportConfig::packet_threshold`] lower then the last
-2750    ///     acknowledged packet.
-2751    ///   - Being sent [`TransportConfig::time_threshold`] * RTT in the past.
-2752    fn detect_lost_packets(
-2753        &mut self,
-2754        now: Instant,
-2755        pn_space: SpaceId,
-2756        path_id: PathId,
-2757        due_to_ack: bool,
-2758    ) {
-2759        let mut lost_packets = Vec::<u64>::new();
-2760        let mut lost_mtu_probe = None;
-2761        let mut in_persistent_congestion = false;
-2762        let mut size_of_lost_packets = 0u64;
-2763        self.spaces[pn_space].for_path(path_id).loss_time = None;
-2764
-2765        // Find all the lost packets, populating all variables initialised above.
-2766
-2767        let path = self.path_data(path_id);
+2676        // Find all the lost packets, populating all variables initialised above.
+2677
+2678        let path = self.path_data(path_id);
+2679        let in_flight_mtu_probe = path.mtud.in_flight_mtu_probe();
+2680        let loss_delay = path
+2681            .rtt
+2682            .conservative()
+2683            .mul_f32(self.config.time_threshold)
+2684            .max(TIMER_GRANULARITY);
+2685        let first_packet_after_rtt_sample = path.first_packet_after_rtt_sample;
+2686
+2687        let largest_acked_packet = self.spaces[pn_space]
+2688            .for_path(path_id)
+2689            .largest_acked_packet
+2690            .expect("detect_lost_packets only to be called if path received at least one ACK");
+2691        let packet_threshold = self.config.packet_threshold as u64;
+2692
+2693        // InPersistentCongestion: Determine if all packets in the time period before the newest
+2694        // lost packet, including the edges, are marked lost. PTO computation must always
+2695        // include max ACK delay, i.e. operate as if in Data space (see RFC9001 §7.6.1).
+2696        let congestion_period = self
+2697            .pto(SpaceId::Data, path_id)
+2698            .saturating_mul(self.config.persistent_congestion_threshold);
+2699        let mut persistent_congestion_start: Option<Instant> = None;
+2700        let mut prev_packet = None;
+2701        let space = self.spaces[pn_space].for_path(path_id);
+2702
+2703        for (packet, info) in space.sent_packets.iter_range(0..largest_acked_packet) {
+2704            if prev_packet != Some(packet.wrapping_sub(1)) {
+2705                // An intervening packet was acknowledged
+2706                persistent_congestion_start = None;
+2707            }
+2708
+2709            // Packets sent before now - loss_delay are deemed lost.
+2710            // However, we avoid subtraction as it can panic and there's no
+2711            // saturating equivalent of this subtraction operation with a Duration.
+2712            let packet_too_old = now.saturating_duration_since(info.time_sent) >= loss_delay;
+2713            if packet_too_old || largest_acked_packet >= packet + packet_threshold {
+2714                // The packet should be declared lost.
+2715                if Some(packet) == in_flight_mtu_probe {
+2716                    // Lost MTU probes are not included in `lost_packets`, because they
+2717                    // should not trigger a congestion control response
+2718                    lost_mtu_probe = in_flight_mtu_probe;
+2719                } else {
+2720                    lost_packets.push(packet);
+2721                    size_of_lost_packets += info.size as u64;
+2722                    if info.ack_eliciting && due_to_ack {
+2723                        match persistent_congestion_start {
+2724                            // Two ACK-eliciting packets lost more than
+2725                            // congestion_period apart, with no ACKed packets in between
+2726                            Some(start) if info.time_sent - start > congestion_period => {
+2727                                in_persistent_congestion = true;
+2728                            }
+2729                            // Persistent congestion must start after the first RTT sample
+2730                            None if first_packet_after_rtt_sample
+2731                                .is_some_and(|x| x < (pn_space, packet)) =>
+2732                            {
+2733                                persistent_congestion_start = Some(info.time_sent);
+2734                            }
+2735                            _ => {}
+2736                        }
+2737                    }
+2738                }
+2739            } else {
+2740                // The packet should not yet be declared lost.
+2741                if space.loss_time.is_none() {
+2742                    // Since we iterate in order the lowest packet number's loss time will
+2743                    // always be the earliest.
+2744                    space.loss_time = Some(info.time_sent + loss_delay);
+2745                }
+2746                persistent_congestion_start = None;
+2747            }
+2748
+2749            prev_packet = Some(packet);
+2750        }
+2751
+2752        self.handle_lost_packets(
+2753            pn_space,
+2754            path_id,
+2755            now,
+2756            lost_packets,
+2757            lost_mtu_probe,
+2758            loss_delay,
+2759            in_persistent_congestion,
+2760            size_of_lost_packets,
+2761        );
+2762    }
+2763
+2764    /// Drops the path state, declaring any remaining in-flight packets as lost
+2765    fn discard_path(&mut self, path_id: PathId, now: Instant) {
+2766        trace!(%path_id, "dropping path state");
+2767        let path = self.path_data(path_id);
 2768        let in_flight_mtu_probe = path.mtud.in_flight_mtu_probe();
-2769        let loss_delay = path
-2770            .rtt
-2771            .conservative()
-2772            .mul_f32(self.config.time_threshold)
-2773            .max(TIMER_GRANULARITY);
-2774        let first_packet_after_rtt_sample = path.first_packet_after_rtt_sample;
-2775
-2776        let largest_acked_packet = self.spaces[pn_space]
-2777            .for_path(path_id)
-2778            .largest_acked_packet
-2779            .expect("detect_lost_packets only to be called if path received at least one ACK");
-2780        let packet_threshold = self.config.packet_threshold as u64;
+2769
+2770        let mut size_of_lost_packets = 0u64; // add to path_stats.lost_bytes;
+2771        let lost_pns: Vec<_> = self.spaces[SpaceId::Data]
+2772            .for_path(path_id)
+2773            .sent_packets
+2774            .iter()
+2775            .filter(|(pn, _info)| Some(*pn) != in_flight_mtu_probe)
+2776            .map(|(pn, info)| {
+2777                size_of_lost_packets += info.size as u64;
+2778                pn
+2779            })
+2780            .collect();
 2781
-2782        // InPersistentCongestion: Determine if all packets in the time period before the newest
-2783        // lost packet, including the edges, are marked lost. PTO computation must always
-2784        // include max ACK delay, i.e. operate as if in Data space (see RFC9001 §7.6.1).
-2785        let congestion_period = self
-2786            .pto(SpaceId::Data, path_id)
-2787            .saturating_mul(self.config.persistent_congestion_threshold);
-2788        let mut persistent_congestion_start: Option<Instant> = None;
-2789        let mut prev_packet = None;
-2790        let space = self.spaces[pn_space].for_path(path_id);
-2791
-2792        for (packet, info) in space.sent_packets.iter_range(0..largest_acked_packet) {
-2793            if prev_packet != Some(packet.wrapping_sub(1)) {
-2794                // An intervening packet was acknowledged
-2795                persistent_congestion_start = None;
-2796            }
-2797
-2798            // Packets sent before now - loss_delay are deemed lost.
-2799            // However, we avoid subtraction as it can panic and there's no
-2800            // saturating equivalent of this subtraction operation with a Duration.
-2801            let packet_too_old = now.saturating_duration_since(info.time_sent) >= loss_delay;
-2802            if packet_too_old || largest_acked_packet >= packet + packet_threshold {
-2803                // The packet should be declared lost.
-2804                if Some(packet) == in_flight_mtu_probe {
-2805                    // Lost MTU probes are not included in `lost_packets`, because they
-2806                    // should not trigger a congestion control response
-2807                    lost_mtu_probe = in_flight_mtu_probe;
-2808                } else {
-2809                    lost_packets.push(packet);
-2810                    size_of_lost_packets += info.size as u64;
-2811                    if info.ack_eliciting && due_to_ack {
-2812                        match persistent_congestion_start {
-2813                            // Two ACK-eliciting packets lost more than
-2814                            // congestion_period apart, with no ACKed packets in between
-2815                            Some(start) if info.time_sent - start > congestion_period => {
-2816                                in_persistent_congestion = true;
-2817                            }
-2818                            // Persistent congestion must start after the first RTT sample
-2819                            None if first_packet_after_rtt_sample
-2820                                .is_some_and(|x| x < (pn_space, packet)) =>
-2821                            {
-2822                                persistent_congestion_start = Some(info.time_sent);
-2823                            }
-2824                            _ => {}
-2825                        }
-2826                    }
-2827                }
-2828            } else {
-2829                // The packet should not yet be declared lost.
-2830                if space.loss_time.is_none() {
-2831                    // Since we iterate in order the lowest packet number's loss time will
-2832                    // always be the earliest.
-2833                    space.loss_time = Some(info.time_sent + loss_delay);
-2834                }
-2835                persistent_congestion_start = None;
-2836            }
-2837
-2838            prev_packet = Some(packet);
-2839        }
-2840
-2841        self.handle_lost_packets(
-2842            pn_space,
-2843            path_id,
-2844            now,
-2845            lost_packets,
-2846            lost_mtu_probe,
-2847            loss_delay,
-2848            in_persistent_congestion,
-2849            size_of_lost_packets,
-2850        );
-2851    }
-2852
-2853    /// Drops the path state, declaring any remaining in-flight packets as lost
-2854    fn discard_path(&mut self, path_id: PathId, now: Instant) {
-2855        trace!(%path_id, "dropping path state");
-2856        let path = self.path_data(path_id);
-2857        let in_flight_mtu_probe = path.mtud.in_flight_mtu_probe();
-2858
-2859        let mut size_of_lost_packets = 0u64; // add to path_stats.lost_bytes;
-2860        let lost_pns: Vec<_> = self.spaces[SpaceId::Data]
-2861            .for_path(path_id)
-2862            .sent_packets
-2863            .iter()
-2864            .filter(|(pn, _info)| Some(*pn) != in_flight_mtu_probe)
-2865            .map(|(pn, info)| {
-2866                size_of_lost_packets += info.size as u64;
-2867                pn
-2868            })
-2869            .collect();
-2870
-2871        if !lost_pns.is_empty() {
-2872            trace!(
-2873                %path_id,
-2874                count = lost_pns.len(),
-2875                lost_bytes = size_of_lost_packets,
-2876                "packets lost on path abandon"
-2877            );
-2878            self.handle_lost_packets(
-2879                SpaceId::Data,
-2880                path_id,
-2881                now,
-2882                lost_pns,
-2883                in_flight_mtu_probe,
-2884                Duration::ZERO,
-2885                false,
-2886                size_of_lost_packets,
-2887            );
-2888        }
-2889        self.paths.remove(&path_id);
-2890        self.spaces[SpaceId::Data].number_spaces.remove(&path_id);
-2891
-2892        let path_stats = self.path_stats.remove(&path_id).unwrap_or_default();
-2893        self.events.push_back(
-2894            PathEvent::Abandoned {
-2895                id: path_id,
-2896                path_stats,
-2897            }
-2898            .into(),
-2899        );
-2900    }
+2782        if !lost_pns.is_empty() {
+2783            trace!(
+2784                %path_id,
+2785                count = lost_pns.len(),
+2786                lost_bytes = size_of_lost_packets,
+2787                "packets lost on path abandon"
+2788            );
+2789            self.handle_lost_packets(
+2790                SpaceId::Data,
+2791                path_id,
+2792                now,
+2793                lost_pns,
+2794                in_flight_mtu_probe,
+2795                Duration::ZERO,
+2796                false,
+2797                size_of_lost_packets,
+2798            );
+2799        }
+2800        self.paths.remove(&path_id);
+2801        self.spaces[SpaceId::Data].number_spaces.remove(&path_id);
+2802
+2803        let path_stats = self.path_stats.remove(&path_id).unwrap_or_default();
+2804        self.events.push_back(
+2805            PathEvent::Abandoned {
+2806                id: path_id,
+2807                path_stats,
+2808            }
+2809            .into(),
+2810        );
+2811    }
+2812
+2813    fn handle_lost_packets(
+2814        &mut self,
+2815        pn_space: SpaceId,
+2816        path_id: PathId,
+2817        now: Instant,
+2818        lost_packets: Vec<u64>,
+2819        lost_mtu_probe: Option<u64>,
+2820        loss_delay: Duration,
+2821        in_persistent_congestion: bool,
+2822        size_of_lost_packets: u64,
+2823    ) {
+2824        debug_assert!(
+2825            {
+2826                let mut sorted = lost_packets.clone();
+2827                sorted.sort();
+2828                sorted == lost_packets
+2829            },
+2830            "lost_packets must be sorted"
+2831        );
+2832
+2833        self.drain_lost_packets(now, pn_space, path_id);
+2834
+2835        // OnPacketsLost
+2836        if let Some(largest_lost) = lost_packets.last().cloned() {
+2837            let old_bytes_in_flight = self.path_data_mut(path_id).in_flight.bytes;
+2838            let largest_lost_sent = self.spaces[pn_space]
+2839                .for_path(path_id)
+2840                .sent_packets
+2841                .get(largest_lost)
+2842                .unwrap()
+2843                .time_sent;
+2844            let path_stats = self.path_stats.entry(path_id).or_default();
+2845            path_stats.lost_packets += lost_packets.len() as u64;
+2846            path_stats.lost_bytes += size_of_lost_packets;
+2847            trace!(
+2848                %path_id,
+2849                count = lost_packets.len(),
+2850                lost_bytes = size_of_lost_packets,
+2851                "packets lost",
+2852            );
+2853
+2854            for &packet in &lost_packets {
+2855                let Some(info) = self.spaces[pn_space].for_path(path_id).take(packet) else {
+2856                    continue;
+2857                };
+2858                self.qlog
+2859                    .emit_packet_lost(packet, &info, loss_delay, pn_space, now);
+2860                self.paths
+2861                    .get_mut(&path_id)
+2862                    .unwrap()
+2863                    .remove_in_flight(&info);
+2864
+2865                for frame in info.stream_frames {
+2866                    self.streams.retransmit(frame);
+2867                }
+2868                self.spaces[pn_space].pending |= info.retransmits;
+2869                self.path_data_mut(path_id)
+2870                    .mtud
+2871                    .on_non_probe_lost(packet, info.size);
+2872
+2873                self.spaces[pn_space].for_path(path_id).lost_packets.insert(
+2874                    packet,
+2875                    LostPacket {
+2876                        time_sent: info.time_sent,
+2877                    },
+2878                );
+2879            }
+2880
+2881            let path = self.path_data_mut(path_id);
+2882            if path.mtud.black_hole_detected(now) {
+2883                path.congestion.on_mtu_update(path.mtud.current_mtu());
+2884                if let Some(max_datagram_size) = self.datagrams().max_size() {
+2885                    if self.datagrams.drop_oversized(max_datagram_size)
+2886                        && self.datagrams.send_blocked
+2887                    {
+2888                        self.datagrams.send_blocked = false;
+2889                        self.events.push_back(Event::DatagramsUnblocked);
+2890                    }
+2891                }
+2892                self.path_stats
+2893                    .entry(path_id)
+2894                    .or_default()
+2895                    .black_holes_detected += 1;
+2896            }
+2897
+2898            // Don't apply congestion penalty for lost ack-only packets
+2899            let lost_ack_eliciting =
+2900                old_bytes_in_flight != self.path_data_mut(path_id).in_flight.bytes;
 2901
-2902    fn handle_lost_packets(
-2903        &mut self,
-2904        pn_space: SpaceId,
-2905        path_id: PathId,
-2906        now: Instant,
-2907        lost_packets: Vec<u64>,
-2908        lost_mtu_probe: Option<u64>,
-2909        loss_delay: Duration,
-2910        in_persistent_congestion: bool,
-2911        size_of_lost_packets: u64,
-2912    ) {
-2913        debug_assert!(
-2914            {
-2915                let mut sorted = lost_packets.clone();
-2916                sorted.sort();
-2917                sorted == lost_packets
-2918            },
-2919            "lost_packets must be sorted"
-2920        );
-2921
-2922        self.drain_lost_packets(now, pn_space, path_id);
-2923
-2924        // OnPacketsLost
-2925        if let Some(largest_lost) = lost_packets.last().cloned() {
-2926            let old_bytes_in_flight = self.path_data_mut(path_id).in_flight.bytes;
-2927            let largest_lost_sent = self.spaces[pn_space]
-2928                .for_path(path_id)
-2929                .sent_packets
-2930                .get(largest_lost)
-2931                .unwrap()
-2932                .time_sent;
-2933            let path_stats = self.path_stats.entry(path_id).or_default();
-2934            path_stats.lost_packets += lost_packets.len() as u64;
-2935            path_stats.lost_bytes += size_of_lost_packets;
-2936            trace!(
-2937                %path_id,
-2938                count = lost_packets.len(),
-2939                lost_bytes = size_of_lost_packets,
-2940                "packets lost",
-2941            );
-2942
-2943            for &packet in &lost_packets {
-2944                let Some(info) = self.spaces[pn_space].for_path(path_id).take(packet) else {
-2945                    continue;
-2946                };
-2947                self.qlog
-2948                    .emit_packet_lost(packet, &info, loss_delay, pn_space, now);
-2949                self.paths
-2950                    .get_mut(&path_id)
-2951                    .unwrap()
-2952                    .remove_in_flight(&info);
-2953
-2954                for frame in info.stream_frames {
-2955                    self.streams.retransmit(frame);
-2956                }
-2957                self.spaces[pn_space].pending |= info.retransmits;
-2958                self.path_data_mut(path_id)
-2959                    .mtud
-2960                    .on_non_probe_lost(packet, info.size);
-2961
-2962                self.spaces[pn_space].for_path(path_id).lost_packets.insert(
-2963                    packet,
-2964                    LostPacket {
-2965                        time_sent: info.time_sent,
-2966                    },
-2967                );
-2968            }
-2969
-2970            let path = self.path_data_mut(path_id);
-2971            if path.mtud.black_hole_detected(now) {
-2972                path.congestion.on_mtu_update(path.mtud.current_mtu());
-2973                if let Some(max_datagram_size) = self.datagrams().max_size() {
-2974                    if self.datagrams.drop_oversized(max_datagram_size)
-2975                        && self.datagrams.send_blocked
-2976                    {
-2977                        self.datagrams.send_blocked = false;
-2978                        self.events.push_back(Event::DatagramsUnblocked);
-2979                    }
-2980                }
-2981                self.path_stats
-2982                    .entry(path_id)
-2983                    .or_default()
-2984                    .black_holes_detected += 1;
+2902            if lost_ack_eliciting {
+2903                self.path_stats
+2904                    .entry(path_id)
+2905                    .or_default()
+2906                    .congestion_events += 1;
+2907                self.path_data_mut(path_id).congestion.on_congestion_event(
+2908                    now,
+2909                    largest_lost_sent,
+2910                    in_persistent_congestion,
+2911                    false,
+2912                    size_of_lost_packets,
+2913                );
+2914            }
+2915        }
+2916
+2917        // Handle a lost MTU probe
+2918        if let Some(packet) = lost_mtu_probe {
+2919            let info = self.spaces[SpaceId::Data]
+2920                .for_path(path_id)
+2921                .take(packet)
+2922                .unwrap(); // safe: lost_mtu_probe is omitted from lost_packets, and
+2923            // therefore must not have been removed yet
+2924            self.paths
+2925                .get_mut(&path_id)
+2926                .unwrap()
+2927                .remove_in_flight(&info);
+2928            self.path_data_mut(path_id).mtud.on_probe_lost();
+2929            self.path_stats
+2930                .entry(path_id)
+2931                .or_default()
+2932                .lost_plpmtud_probes += 1;
+2933        }
+2934    }
+2935
+2936    /// Returns the earliest time packets should be declared lost for all spaces on a path.
+2937    ///
+2938    /// If a path has an acknowledged packet with any prior un-acknowledged packets, the
+2939    /// earliest un-acknowledged packet can be declared lost after a timeout has elapsed.
+2940    /// The time returned is when this packet should be declared lost.
+2941    fn loss_time_and_space(&self, path_id: PathId) -> Option<(Instant, SpaceId)> {
+2942        SpaceId::iter()
+2943            .filter_map(|id| {
+2944                self.spaces[id]
+2945                    .number_spaces
+2946                    .get(&path_id)
+2947                    .and_then(|pns| pns.loss_time)
+2948                    .map(|time| (time, id))
+2949            })
+2950            .min_by_key(|&(time, _)| time)
+2951    }
+2952
+2953    /// Returns the earliest next PTO should fire for all spaces on a path.
+2954    fn pto_time_and_space(&mut self, now: Instant, path_id: PathId) -> Option<(Instant, SpaceId)> {
+2955        let path = self.path(path_id)?;
+2956        let pto_count = path.pto_count;
+2957        let backoff = 2u32.pow(pto_count.min(MAX_BACKOFF_EXPONENT));
+2958        let mut duration = path.rtt.pto_base() * backoff;
+2959
+2960        if path_id == PathId::ZERO
+2961            && path.in_flight.ack_eliciting == 0
+2962            && !self.peer_completed_address_validation(PathId::ZERO)
+2963        {
+2964            // Address Validation during Connection Establishment:
+2965            // https://www.rfc-editor.org/rfc/rfc9000.html#section-8.1. To prevent a
+2966            // deadlock if an Initial or Handshake packet from the server is lost and the
+2967            // server can not send more due to its anti-amplification limit the client must
+2968            // send another packet on PTO.
+2969            let space = match self.highest_space {
+2970                SpaceId::Handshake => SpaceId::Handshake,
+2971                _ => SpaceId::Initial,
+2972            };
+2973
+2974            return Some((now + duration, space));
+2975        }
+2976
+2977        let mut result = None;
+2978        for space in SpaceId::iter() {
+2979            let Some(pns) = self.spaces[space].number_spaces.get(&path_id) else {
+2980                continue;
+2981            };
+2982
+2983            if !pns.has_in_flight() {
+2984                continue;
 2985            }
-2986
-2987            // Don't apply congestion penalty for lost ack-only packets
-2988            let lost_ack_eliciting =
-2989                old_bytes_in_flight != self.path_data_mut(path_id).in_flight.bytes;
-2990
-2991            if lost_ack_eliciting {
-2992                self.path_stats
-2993                    .entry(path_id)
-2994                    .or_default()
-2995                    .congestion_events += 1;
-2996                self.path_data_mut(path_id).congestion.on_congestion_event(
-2997                    now,
-2998                    largest_lost_sent,
-2999                    in_persistent_congestion,
-3000                    false,
-3001                    size_of_lost_packets,
-3002                );
-3003            }
-3004        }
-3005
-3006        // Handle a lost MTU probe
-3007        if let Some(packet) = lost_mtu_probe {
-3008            let info = self.spaces[SpaceId::Data]
-3009                .for_path(path_id)
-3010                .take(packet)
-3011                .unwrap(); // safe: lost_mtu_probe is omitted from lost_packets, and
-3012            // therefore must not have been removed yet
-3013            self.paths
-3014                .get_mut(&path_id)
-3015                .unwrap()
-3016                .remove_in_flight(&info);
-3017            self.path_data_mut(path_id).mtud.on_probe_lost();
-3018            self.path_stats
-3019                .entry(path_id)
-3020                .or_default()
-3021                .lost_plpmtud_probes += 1;
-3022        }
-3023    }
-3024
-3025    /// Returns the earliest time packets should be declared lost for all spaces on a path.
-3026    ///
-3027    /// If a path has an acknowledged packet with any prior un-acknowledged packets, the
-3028    /// earliest un-acknowledged packet can be declared lost after a timeout has elapsed.
-3029    /// The time returned is when this packet should be declared lost.
-3030    fn loss_time_and_space(&self, path_id: PathId) -> Option<(Instant, SpaceId)> {
-3031        SpaceId::iter()
-3032            .filter_map(|id| {
-3033                self.spaces[id]
-3034                    .number_spaces
-3035                    .get(&path_id)
-3036                    .and_then(|pns| pns.loss_time)
-3037                    .map(|time| (time, id))
-3038            })
-3039            .min_by_key(|&(time, _)| time)
-3040    }
-3041
-3042    /// Returns the earliest next PTO should fire for all spaces on a path.
-3043    fn pto_time_and_space(&mut self, now: Instant, path_id: PathId) -> Option<(Instant, SpaceId)> {
-3044        let path = self.path(path_id)?;
-3045        let pto_count = path.pto_count;
-3046        let backoff = 2u32.pow(pto_count.min(MAX_BACKOFF_EXPONENT));
-3047        let mut duration = path.rtt.pto_base() * backoff;
-3048
-3049        if path_id == PathId::ZERO
-3050            && path.in_flight.ack_eliciting == 0
-3051            && !self.peer_completed_address_validation(PathId::ZERO)
-3052        {
-3053            // Address Validation during Connection Establishment:
-3054            // https://www.rfc-editor.org/rfc/rfc9000.html#section-8.1. To prevent a
-3055            // deadlock if an Initial or Handshake packet from the server is lost and the
-3056            // server can not send more due to its anti-amplification limit the client must
-3057            // send another packet on PTO.
-3058            let space = match self.highest_space {
-3059                SpaceId::Handshake => SpaceId::Handshake,
-3060                _ => SpaceId::Initial,
-3061            };
-3062
-3063            return Some((now + duration, space));
-3064        }
-3065
-3066        let mut result = None;
-3067        for space in SpaceId::iter() {
-3068            let Some(pns) = self.spaces[space].number_spaces.get(&path_id) else {
-3069                continue;
-3070            };
-3071
-3072            if !pns.has_in_flight() {
-3073                continue;
-3074            }
-3075            if space == SpaceId::Data {
-3076                // Skip ApplicationData until handshake completes.
-3077                if self.is_handshaking() {
-3078                    return result;
-3079                }
-3080                // Include max_ack_delay and backoff for ApplicationData.
-3081                duration += self.ack_frequency.max_ack_delay_for_pto() * backoff;
-3082            }
-3083            let Some(last_ack_eliciting) = pns.time_of_last_ack_eliciting_packet else {
-3084                continue;
-3085            };
-3086            let pto = last_ack_eliciting + duration;
-3087            if result.is_none_or(|(earliest_pto, _)| pto < earliest_pto) {
-3088                if path.anti_amplification_blocked(1) {
-3089                    // Nothing would be able to be sent.
-3090                    continue;
-3091                }
-3092                if path.in_flight.ack_eliciting == 0 {
-3093                    // Nothing ack-eliciting, no PTO to arm/fire.
-3094                    continue;
-3095                }
-3096                result = Some((pto, space));
-3097            }
-3098        }
-3099        result
-3100    }
-3101
-3102    fn peer_completed_address_validation(&self, path: PathId) -> bool {
-3103        // TODO(flub): This logic needs updating for multipath
-3104        if self.side.is_server() || self.state.is_closed() {
-3105            return true;
-3106        }
-3107        // The server is guaranteed to have validated our address if any of our handshake or 1-RTT
-3108        // packets are acknowledged or we've seen HANDSHAKE_DONE and discarded handshake keys.
-3109        self.spaces[SpaceId::Handshake]
-3110            .path_space(PathId::ZERO)
-3111            .and_then(|pns| pns.largest_acked_packet)
-3112            .is_some()
-3113            || self.spaces[SpaceId::Data]
-3114                .path_space(path)
-3115                .and_then(|pns| pns.largest_acked_packet)
-3116                .is_some()
-3117            || (self.spaces[SpaceId::Data].crypto.is_some()
-3118                && self.spaces[SpaceId::Handshake].crypto.is_none())
-3119    }
-3120
-3121    /// Resets the the [`PathTimer::LossDetection`] timer to the next instant it may be needed
-3122    ///
-3123    /// The timer must fire if either:
-3124    /// - An ack-eliciting packet we sent needs to be declared lost.
-3125    /// - A tail-loss probe needs to be sent.
-3126    ///
-3127    /// See [`Connection::on_loss_detection_timeout`] for details.
-3128    fn set_loss_detection_timer(&mut self, now: Instant, path_id: PathId) {
-3129        if self.state.is_closed() {
-3130            // No loss detection takes place on closed connections, and `close_common` already
-3131            // stopped time timer. Ensure we don't restart it inadvertently, e.g. in response to a
-3132            // reordered packet being handled by state-insensitive code.
-3133            return;
-3134        }
-3135
-3136        if let Some((loss_time, _)) = self.loss_time_and_space(path_id) {
-3137            // Time threshold loss detection.
-3138            self.timers.set(
-3139                Timer::PerPath(path_id, PathTimer::LossDetection),
-3140                loss_time,
-3141                self.qlog.with_time(now),
-3142            );
-3143            return;
-3144        }
-3145
-3146        // Determine which PN space to arm PTO for.
-3147        // Calculate PTO duration
-3148        if let Some((timeout, _)) = self.pto_time_and_space(now, path_id) {
-3149            self.timers.set(
-3150                Timer::PerPath(path_id, PathTimer::LossDetection),
-3151                timeout,
-3152                self.qlog.with_time(now),
-3153            );
-3154        } else {
-3155            self.timers.stop(
-3156                Timer::PerPath(path_id, PathTimer::LossDetection),
-3157                self.qlog.with_time(now),
-3158            );
-3159        }
-3160    }
-3161
-3162    /// The maximum probe timeout across all paths
-3163    ///
-3164    /// If `is_closing` is set to `true` it will filter out paths that have not yet been used.
-3165    ///
-3166    /// See [`Connection::pto`]
-3167    fn pto_max_path(&self, space: SpaceId, is_closing: bool) -> Duration {
-3168        match space {
-3169            SpaceId::Initial | SpaceId::Handshake => self.pto(space, PathId::ZERO),
-3170            SpaceId::Data => self
-3171                .paths
-3172                .iter()
-3173                .filter_map(|(path_id, state)| {
-3174                    if is_closing && state.data.total_sent == 0 && state.data.total_recvd == 0 {
-3175                        // If we are closing and haven't sent anything yet, do not include
-3176                        None
-3177                    } else {
-3178                        let pto = self.pto(space, *path_id);
-3179                        Some(pto)
-3180                    }
-3181                })
-3182                .max()
-3183                .expect("there should be one at least path"),
+2986            if space == SpaceId::Data {
+2987                // Skip ApplicationData until handshake completes.
+2988                if self.is_handshaking() {
+2989                    return result;
+2990                }
+2991                // Include max_ack_delay and backoff for ApplicationData.
+2992                duration += self.ack_frequency.max_ack_delay_for_pto() * backoff;
+2993            }
+2994            let Some(last_ack_eliciting) = pns.time_of_last_ack_eliciting_packet else {
+2995                continue;
+2996            };
+2997            let pto = last_ack_eliciting + duration;
+2998            if result.is_none_or(|(earliest_pto, _)| pto < earliest_pto) {
+2999                if path.anti_amplification_blocked(1) {
+3000                    // Nothing would be able to be sent.
+3001                    continue;
+3002                }
+3003                if path.in_flight.ack_eliciting == 0 {
+3004                    // Nothing ack-eliciting, no PTO to arm/fire.
+3005                    continue;
+3006                }
+3007                result = Some((pto, space));
+3008            }
+3009        }
+3010        result
+3011    }
+3012
+3013    fn peer_completed_address_validation(&self, path: PathId) -> bool {
+3014        // TODO(flub): This logic needs updating for multipath
+3015        if self.side.is_server() || self.state.is_closed() {
+3016            return true;
+3017        }
+3018        // The server is guaranteed to have validated our address if any of our handshake or 1-RTT
+3019        // packets are acknowledged or we've seen HANDSHAKE_DONE and discarded handshake keys.
+3020        self.spaces[SpaceId::Handshake]
+3021            .path_space(PathId::ZERO)
+3022            .and_then(|pns| pns.largest_acked_packet)
+3023            .is_some()
+3024            || self.spaces[SpaceId::Data]
+3025                .path_space(path)
+3026                .and_then(|pns| pns.largest_acked_packet)
+3027                .is_some()
+3028            || (self.spaces[SpaceId::Data].crypto.is_some()
+3029                && self.spaces[SpaceId::Handshake].crypto.is_none())
+3030    }
+3031
+3032    /// Resets the the [`PathTimer::LossDetection`] timer to the next instant it may be needed
+3033    ///
+3034    /// The timer must fire if either:
+3035    /// - An ack-eliciting packet we sent needs to be declared lost.
+3036    /// - A tail-loss probe needs to be sent.
+3037    ///
+3038    /// See [`Connection::on_loss_detection_timeout`] for details.
+3039    fn set_loss_detection_timer(&mut self, now: Instant, path_id: PathId) {
+3040        if self.state.is_closed() {
+3041            // No loss detection takes place on closed connections, and `close_common` already
+3042            // stopped time timer. Ensure we don't restart it inadvertently, e.g. in response to a
+3043            // reordered packet being handled by state-insensitive code.
+3044            return;
+3045        }
+3046
+3047        if let Some((loss_time, _)) = self.loss_time_and_space(path_id) {
+3048            // Time threshold loss detection.
+3049            self.timers.set(
+3050                Timer::PerPath(path_id, PathTimer::LossDetection),
+3051                loss_time,
+3052                self.qlog.with_time(now),
+3053            );
+3054            return;
+3055        }
+3056
+3057        // Determine which PN space to arm PTO for.
+3058        // Calculate PTO duration
+3059        if let Some((timeout, _)) = self.pto_time_and_space(now, path_id) {
+3060            self.timers.set(
+3061                Timer::PerPath(path_id, PathTimer::LossDetection),
+3062                timeout,
+3063                self.qlog.with_time(now),
+3064            );
+3065        } else {
+3066            self.timers.stop(
+3067                Timer::PerPath(path_id, PathTimer::LossDetection),
+3068                self.qlog.with_time(now),
+3069            );
+3070        }
+3071    }
+3072
+3073    /// The maximum probe timeout across all paths
+3074    ///
+3075    /// If `is_closing` is set to `true` it will filter out paths that have not yet been used.
+3076    ///
+3077    /// See [`Connection::pto`]
+3078    fn pto_max_path(&self, space: SpaceId, is_closing: bool) -> Duration {
+3079        match space {
+3080            SpaceId::Initial | SpaceId::Handshake => self.pto(space, PathId::ZERO),
+3081            SpaceId::Data => self
+3082                .paths
+3083                .iter()
+3084                .filter_map(|(path_id, state)| {
+3085                    if is_closing && state.data.total_sent == 0 && state.data.total_recvd == 0 {
+3086                        // If we are closing and haven't sent anything yet, do not include
+3087                        None
+3088                    } else {
+3089                        let pto = self.pto(space, *path_id);
+3090                        Some(pto)
+3091                    }
+3092                })
+3093                .max()
+3094                .expect("there should be one at least path"),
+3095        }
+3096    }
+3097
+3098    /// Probe Timeout
+3099    ///
+3100    /// The PTO is logically the time in which you'd expect to receive an acknowledgement
+3101    /// for a packet. So approximately RTT + max_ack_delay.
+3102    fn pto(&self, space: SpaceId, path_id: PathId) -> Duration {
+3103        let max_ack_delay = match space {
+3104            SpaceId::Initial | SpaceId::Handshake => Duration::ZERO,
+3105            SpaceId::Data => self.ack_frequency.max_ack_delay_for_pto(),
+3106        };
+3107        self.path_data(path_id).rtt.pto_base() + max_ack_delay
+3108    }
+3109
+3110    fn on_packet_authenticated(
+3111        &mut self,
+3112        now: Instant,
+3113        space_id: SpaceId,
+3114        path_id: PathId,
+3115        ecn: Option<EcnCodepoint>,
+3116        packet: Option<u64>,
+3117        spin: bool,
+3118        is_1rtt: bool,
+3119    ) {
+3120        self.total_authed_packets += 1;
+3121        if let Some(last_allowed_receive) = self
+3122            .paths
+3123            .get(&path_id)
+3124            .and_then(|path| path.data.last_allowed_receive)
+3125        {
+3126            if now > last_allowed_receive {
+3127                warn!("received data on path which we abandoned more than 3 * PTO ago");
+3128                // The peer failed to respond with a PATH_ABANDON in time.
+3129                if !self.state.is_closed() {
+3130                    // TODO(flub): What should the error code be?
+3131                    self.state.move_to_closed(TransportError::NO_ERROR(
+3132                        "peer failed to respond with PATH_ABANDON in time",
+3133                    ));
+3134                    self.close_common();
+3135                    self.set_close_timer(now);
+3136                    self.close = true;
+3137                }
+3138                return;
+3139            }
+3140        }
+3141
+3142        self.reset_keep_alive(path_id, now);
+3143        self.reset_idle_timeout(now, space_id, path_id);
+3144        self.permit_idle_reset = true;
+3145        self.receiving_ecn |= ecn.is_some();
+3146        if let Some(x) = ecn {
+3147            let space = &mut self.spaces[space_id];
+3148            space.for_path(path_id).ecn_counters += x;
+3149
+3150            if x.is_ce() {
+3151                space
+3152                    .for_path(path_id)
+3153                    .pending_acks
+3154                    .set_immediate_ack_required();
+3155            }
+3156        }
+3157
+3158        let packet = match packet {
+3159            Some(x) => x,
+3160            None => return,
+3161        };
+3162        match &self.side {
+3163            ConnectionSide::Client { .. } => {
+3164                // If we received a handshake packet that authenticated, then we're talking to
+3165                // the real server.  From now on we should no longer allow the server to migrate
+3166                // its address.
+3167                if space_id == SpaceId::Handshake {
+3168                    if let Some(hs) = self.state.as_handshake_mut() {
+3169                        hs.allow_server_migration = false;
+3170                    }
+3171                }
+3172            }
+3173            ConnectionSide::Server { .. } => {
+3174                if self.spaces[SpaceId::Initial].crypto.is_some() && space_id == SpaceId::Handshake
+3175                {
+3176                    // A server stops sending and processing Initial packets when it receives its first Handshake packet.
+3177                    self.discard_space(now, SpaceId::Initial);
+3178                }
+3179                if self.zero_rtt_crypto.is_some() && is_1rtt {
+3180                    // Discard 0-RTT keys soon after receiving a 1-RTT packet
+3181                    self.set_key_discard_timer(now, space_id)
+3182                }
+3183            }
 3184        }
-3185    }
-3186
-3187    /// Probe Timeout
-3188    ///
-3189    /// The PTO is logically the time in which you'd expect to receive an acknowledgement
-3190    /// for a packet. So approximately RTT + max_ack_delay.
-3191    fn pto(&self, space: SpaceId, path_id: PathId) -> Duration {
-3192        let max_ack_delay = match space {
-3193            SpaceId::Initial | SpaceId::Handshake => Duration::ZERO,
-3194            SpaceId::Data => self.ack_frequency.max_ack_delay_for_pto(),
-3195        };
-3196        self.path_data(path_id).rtt.pto_base() + max_ack_delay
-3197    }
-3198
-3199    fn on_packet_authenticated(
-3200        &mut self,
-3201        now: Instant,
-3202        space_id: SpaceId,
-3203        path_id: PathId,
-3204        ecn: Option<EcnCodepoint>,
-3205        packet: Option<u64>,
-3206        spin: bool,
-3207        is_1rtt: bool,
-3208    ) {
-3209        self.total_authed_packets += 1;
-3210        if let Some(last_allowed_receive) = self
-3211            .paths
-3212            .get(&path_id)
-3213            .and_then(|path| path.data.last_allowed_receive)
-3214        {
-3215            if now > last_allowed_receive {
-3216                warn!("received data on path which we abandoned more than 3 * PTO ago");
-3217                // The peer failed to respond with a PATH_ABANDON in time.
-3218                if !self.state.is_closed() {
-3219                    // TODO(flub): What should the error code be?
-3220                    self.state.move_to_closed(TransportError::NO_ERROR(
-3221                        "peer failed to respond with PATH_ABANDON in time",
-3222                    ));
-3223                    self.close_common();
-3224                    self.set_close_timer(now);
-3225                    self.close = true;
-3226                }
-3227                return;
+3185        let space = self.spaces[space_id].for_path(path_id);
+3186        space.pending_acks.insert_one(packet, now);
+3187        if packet >= space.rx_packet.unwrap_or_default() {
+3188            space.rx_packet = Some(packet);
+3189            // Update outgoing spin bit, inverting iff we're the client
+3190            self.spin = self.side.is_client() ^ spin;
+3191        }
+3192    }
+3193
+3194    /// Resets the idle timeout timers
+3195    ///
+3196    /// Without multipath there is only the connection-wide idle timeout. When multipath is
+3197    /// enabled there is an additional per-path idle timeout.
+3198    fn reset_idle_timeout(&mut self, now: Instant, space: SpaceId, path_id: PathId) {
+3199        // First reset the global idle timeout.
+3200        if let Some(timeout) = self.idle_timeout {
+3201            if self.state.is_closed() {
+3202                self.timers
+3203                    .stop(Timer::Conn(ConnTimer::Idle), self.qlog.with_time(now));
+3204            } else {
+3205                let dt = cmp::max(timeout, 3 * self.pto_max_path(space, false));
+3206                self.timers.set(
+3207                    Timer::Conn(ConnTimer::Idle),
+3208                    now + dt,
+3209                    self.qlog.with_time(now),
+3210                );
+3211            }
+3212        }
+3213
+3214        // Now handle the per-path state
+3215        if let Some(timeout) = self.path_data(path_id).idle_timeout {
+3216            if self.state.is_closed() {
+3217                self.timers.stop(
+3218                    Timer::PerPath(path_id, PathTimer::PathIdle),
+3219                    self.qlog.with_time(now),
+3220                );
+3221            } else {
+3222                let dt = cmp::max(timeout, 3 * self.pto(space, path_id));
+3223                self.timers.set(
+3224                    Timer::PerPath(path_id, PathTimer::PathIdle),
+3225                    now + dt,
+3226                    self.qlog.with_time(now),
+3227                );
 3228            }
 3229        }
-3230
-3231        self.reset_keep_alive(path_id, now);
-3232        self.reset_idle_timeout(now, space_id, path_id);
-3233        self.permit_idle_reset = true;
-3234        self.receiving_ecn |= ecn.is_some();
-3235        if let Some(x) = ecn {
-3236            let space = &mut self.spaces[space_id];
-3237            space.for_path(path_id).ecn_counters += x;
-3238
-3239            if x.is_ce() {
-3240                space
-3241                    .for_path(path_id)
-3242                    .pending_acks
-3243                    .set_immediate_ack_required();
-3244            }
-3245        }
-3246
-3247        let packet = match packet {
-3248            Some(x) => x,
-3249            None => return,
-3250        };
-3251        match &self.side {
-3252            ConnectionSide::Client { .. } => {
-3253                // If we received a handshake packet that authenticated, then we're talking to
-3254                // the real server.  From now on we should no longer allow the server to migrate
-3255                // its address.
-3256                if space_id == SpaceId::Handshake {
-3257                    if let Some(hs) = self.state.as_handshake_mut() {
-3258                        hs.allow_server_migration = false;
-3259                    }
-3260                }
-3261            }
-3262            ConnectionSide::Server { .. } => {
-3263                if self.spaces[SpaceId::Initial].crypto.is_some() && space_id == SpaceId::Handshake
-3264                {
-3265                    // A server stops sending and processing Initial packets when it receives its first Handshake packet.
-3266                    self.discard_space(now, SpaceId::Initial);
-3267                }
-3268                if self.zero_rtt_crypto.is_some() && is_1rtt {
-3269                    // Discard 0-RTT keys soon after receiving a 1-RTT packet
-3270                    self.set_key_discard_timer(now, space_id)
-3271                }
-3272            }
-3273        }
-3274        let space = self.spaces[space_id].for_path(path_id);
-3275        space.pending_acks.insert_one(packet, now);
-3276        if packet >= space.rx_packet.unwrap_or_default() {
-3277            space.rx_packet = Some(packet);
-3278            // Update outgoing spin bit, inverting iff we're the client
-3279            self.spin = self.side.is_client() ^ spin;
-3280        }
-3281    }
-3282
-3283    /// Resets the idle timeout timers
-3284    ///
-3285    /// Without multipath there is only the connection-wide idle timeout. When multipath is
-3286    /// enabled there is an additional per-path idle timeout.
-3287    fn reset_idle_timeout(&mut self, now: Instant, space: SpaceId, path_id: PathId) {
-3288        // First reset the global idle timeout.
-3289        if let Some(timeout) = self.idle_timeout {
-3290            if self.state.is_closed() {
-3291                self.timers
-3292                    .stop(Timer::Conn(ConnTimer::Idle), self.qlog.with_time(now));
-3293            } else {
-3294                let dt = cmp::max(timeout, 3 * self.pto_max_path(space, false));
-3295                self.timers.set(
-3296                    Timer::Conn(ConnTimer::Idle),
-3297                    now + dt,
-3298                    self.qlog.with_time(now),
-3299                );
-3300            }
-3301        }
-3302
-3303        // Now handle the per-path state
-3304        if let Some(timeout) = self.path_data(path_id).idle_timeout {
-3305            if self.state.is_closed() {
-3306                self.timers.stop(
-3307                    Timer::PerPath(path_id, PathTimer::PathIdle),
-3308                    self.qlog.with_time(now),
-3309                );
-3310            } else {
-3311                let dt = cmp::max(timeout, 3 * self.pto(space, path_id));
-3312                self.timers.set(
-3313                    Timer::PerPath(path_id, PathTimer::PathIdle),
-3314                    now + dt,
-3315                    self.qlog.with_time(now),
-3316                );
-3317            }
-3318        }
-3319    }
-3320
-3321    /// Resets both the [`ConnTimer::KeepAlive`] and [`PathTimer::PathKeepAlive`] timers
-3322    fn reset_keep_alive(&mut self, path_id: PathId, now: Instant) {
-3323        if !self.state.is_established() {
-3324            return;
-3325        }
-3326
-3327        if let Some(interval) = self.config.keep_alive_interval {
-3328            self.timers.set(
-3329                Timer::Conn(ConnTimer::KeepAlive),
-3330                now + interval,
-3331                self.qlog.with_time(now),
-3332            );
-3333        }
+3230    }
+3231
+3232    /// Resets both the [`ConnTimer::KeepAlive`] and [`PathTimer::PathKeepAlive`] timers
+3233    fn reset_keep_alive(&mut self, path_id: PathId, now: Instant) {
+3234        if !self.state.is_established() {
+3235            return;
+3236        }
+3237
+3238        if let Some(interval) = self.config.keep_alive_interval {
+3239            self.timers.set(
+3240                Timer::Conn(ConnTimer::KeepAlive),
+3241                now + interval,
+3242                self.qlog.with_time(now),
+3243            );
+3244        }
+3245
+3246        if let Some(interval) = self.path_data(path_id).keep_alive {
+3247            self.timers.set(
+3248                Timer::PerPath(path_id, PathTimer::PathKeepAlive),
+3249                now + interval,
+3250                self.qlog.with_time(now),
+3251            );
+3252        }
+3253    }
+3254
+3255    /// Sets the timer for when a previously issued CID should be retired next
+3256    fn reset_cid_retirement(&mut self, now: Instant) {
+3257        if let Some((_path, t)) = self.next_cid_retirement() {
+3258            self.timers.set(
+3259                Timer::Conn(ConnTimer::PushNewCid),
+3260                t,
+3261                self.qlog.with_time(now),
+3262            );
+3263        }
+3264    }
+3265
+3266    /// The next time when a previously issued CID should be retired
+3267    fn next_cid_retirement(&self) -> Option<(PathId, Instant)> {
+3268        self.local_cid_state
+3269            .iter()
+3270            .filter_map(|(path_id, cid_state)| cid_state.next_timeout().map(|t| (*path_id, t)))
+3271            .min_by_key(|(_path_id, timeout)| *timeout)
+3272    }
+3273
+3274    /// Handle the already-decrypted first packet from the client
+3275    ///
+3276    /// Decrypting the first packet in the `Endpoint` allows stateless packet handling to be more
+3277    /// efficient.
+3278    pub(crate) fn handle_first_packet(
+3279        &mut self,
+3280        now: Instant,
+3281        network_path: FourTuple,
+3282        ecn: Option<EcnCodepoint>,
+3283        packet_number: u64,
+3284        packet: InitialPacket,
+3285        remaining: Option<BytesMut>,
+3286    ) -> Result<(), ConnectionError> {
+3287        let span = trace_span!("first recv");
+3288        let _guard = span.enter();
+3289        debug_assert!(self.side.is_server());
+3290        let len = packet.header_data.len() + packet.payload.len();
+3291        let path_id = PathId::ZERO;
+3292        self.path_data_mut(path_id).total_recvd = len as u64;
+3293
+3294        if let Some(hs) = self.state.as_handshake_mut() {
+3295            hs.expected_token = packet.header.token.clone();
+3296        } else {
+3297            unreachable!("first packet must be delivered in Handshake state");
+3298        }
+3299
+3300        // The first packet is always on PathId::ZERO
+3301        self.on_packet_authenticated(
+3302            now,
+3303            SpaceId::Initial,
+3304            path_id,
+3305            ecn,
+3306            Some(packet_number),
+3307            false,
+3308            false,
+3309        );
+3310
+3311        let packet: Packet = packet.into();
+3312
+3313        let mut qlog = QlogRecvPacket::new(len);
+3314        qlog.header(&packet.header, Some(packet_number), path_id);
+3315
+3316        self.process_decrypted_packet(
+3317            now,
+3318            network_path,
+3319            path_id,
+3320            Some(packet_number),
+3321            packet,
+3322            &mut qlog,
+3323        )?;
+3324        self.qlog.emit_packet_received(qlog, now);
+3325        if let Some(data) = remaining {
+3326            self.handle_coalesced(now, network_path, path_id, ecn, data);
+3327        }
+3328
+3329        self.qlog.emit_recovery_metrics(
+3330            path_id,
+3331            &mut self.paths.get_mut(&path_id).unwrap().data,
+3332            now,
+3333        );
 3334
-3335        if let Some(interval) = self.path_data(path_id).keep_alive {
-3336            self.timers.set(
-3337                Timer::PerPath(path_id, PathTimer::PathKeepAlive),
-3338                now + interval,
-3339                self.qlog.with_time(now),
-3340            );
-3341        }
-3342    }
-3343
-3344    /// Sets the timer for when a previously issued CID should be retired next
-3345    fn reset_cid_retirement(&mut self, now: Instant) {
-3346        if let Some((_path, t)) = self.next_cid_retirement() {
-3347            self.timers.set(
-3348                Timer::Conn(ConnTimer::PushNewCid),
-3349                t,
-3350                self.qlog.with_time(now),
-3351            );
-3352        }
-3353    }
-3354
-3355    /// The next time when a previously issued CID should be retired
-3356    fn next_cid_retirement(&self) -> Option<(PathId, Instant)> {
-3357        self.local_cid_state
-3358            .iter()
-3359            .filter_map(|(path_id, cid_state)| cid_state.next_timeout().map(|t| (*path_id, t)))
-3360            .min_by_key(|(_path_id, timeout)| *timeout)
-3361    }
-3362
-3363    /// Handle the already-decrypted first packet from the client
-3364    ///
-3365    /// Decrypting the first packet in the `Endpoint` allows stateless packet handling to be more
-3366    /// efficient.
-3367    pub(crate) fn handle_first_packet(
-3368        &mut self,
-3369        now: Instant,
-3370        network_path: FourTuple,
-3371        ecn: Option<EcnCodepoint>,
-3372        packet_number: u64,
-3373        packet: InitialPacket,
-3374        remaining: Option<BytesMut>,
-3375    ) -> Result<(), ConnectionError> {
-3376        let span = trace_span!("first recv");
-3377        let _guard = span.enter();
-3378        debug_assert!(self.side.is_server());
-3379        let len = packet.header_data.len() + packet.payload.len();
-3380        let path_id = PathId::ZERO;
-3381        self.path_data_mut(path_id).total_recvd = len as u64;
-3382
-3383        if let Some(hs) = self.state.as_handshake_mut() {
-3384            hs.expected_token = packet.header.token.clone();
+3335        Ok(())
+3336    }
+3337
+3338    fn init_0rtt(&mut self, now: Instant) {
+3339        let (header, packet) = match self.crypto.early_crypto() {
+3340            Some(x) => x,
+3341            None => return,
+3342        };
+3343        if self.side.is_client() {
+3344            match self.crypto.transport_parameters() {
+3345                Ok(params) => {
+3346                    let params = params
+3347                        .expect("crypto layer didn't supply transport parameters with ticket");
+3348                    // Certain values must not be cached
+3349                    let params = TransportParameters {
+3350                        initial_src_cid: None,
+3351                        original_dst_cid: None,
+3352                        preferred_address: None,
+3353                        retry_src_cid: None,
+3354                        stateless_reset_token: None,
+3355                        min_ack_delay: None,
+3356                        ack_delay_exponent: TransportParameters::default().ack_delay_exponent,
+3357                        max_ack_delay: TransportParameters::default().max_ack_delay,
+3358                        initial_max_path_id: None,
+3359                        ..params
+3360                    };
+3361                    self.set_peer_params(params);
+3362                    self.qlog.emit_peer_transport_params_restored(self, now);
+3363                }
+3364                Err(e) => {
+3365                    error!("session ticket has malformed transport parameters: {}", e);
+3366                    return;
+3367                }
+3368            }
+3369        }
+3370        trace!("0-RTT enabled");
+3371        self.zero_rtt_enabled = true;
+3372        self.zero_rtt_crypto = Some(ZeroRttCrypto { header, packet });
+3373    }
+3374
+3375    fn read_crypto(
+3376        &mut self,
+3377        space: SpaceId,
+3378        crypto: &frame::Crypto,
+3379        payload_len: usize,
+3380    ) -> Result<(), TransportError> {
+3381        let expected = if !self.state.is_handshake() {
+3382            SpaceId::Data
+3383        } else if self.highest_space == SpaceId::Initial {
+3384            SpaceId::Initial
 3385        } else {
-3386            unreachable!("first packet must be delivered in Handshake state");
-3387        }
-3388
-3389        // The first packet is always on PathId::ZERO
-3390        self.on_packet_authenticated(
-3391            now,
-3392            SpaceId::Initial,
-3393            path_id,
-3394            ecn,
-3395            Some(packet_number),
-3396            false,
-3397            false,
-3398        );
-3399
-3400        let packet: Packet = packet.into();
-3401
-3402        let mut qlog = QlogRecvPacket::new(len);
-3403        qlog.header(&packet.header, Some(packet_number), path_id);
-3404
-3405        self.process_decrypted_packet(
-3406            now,
-3407            network_path,
-3408            path_id,
-3409            Some(packet_number),
-3410            packet,
-3411            &mut qlog,
-3412        )?;
-3413        self.qlog.emit_packet_received(qlog, now);
-3414        if let Some(data) = remaining {
-3415            self.handle_coalesced(now, network_path, path_id, ecn, data);
-3416        }
-3417
-3418        self.qlog.emit_recovery_metrics(
-3419            path_id,
-3420            &mut self.paths.get_mut(&path_id).unwrap().data,
-3421            now,
-3422        );
-3423
-3424        Ok(())
-3425    }
-3426
-3427    fn init_0rtt(&mut self, now: Instant) {
-3428        let (header, packet) = match self.crypto.early_crypto() {
-3429            Some(x) => x,
-3430            None => return,
-3431        };
-3432        if self.side.is_client() {
-3433            match self.crypto.transport_parameters() {
-3434                Ok(params) => {
-3435                    let params = params
-3436                        .expect("crypto layer didn't supply transport parameters with ticket");
-3437                    // Certain values must not be cached
-3438                    let params = TransportParameters {
-3439                        initial_src_cid: None,
-3440                        original_dst_cid: None,
-3441                        preferred_address: None,
-3442                        retry_src_cid: None,
-3443                        stateless_reset_token: None,
-3444                        min_ack_delay: None,
-3445                        ack_delay_exponent: TransportParameters::default().ack_delay_exponent,
-3446                        max_ack_delay: TransportParameters::default().max_ack_delay,
-3447                        initial_max_path_id: None,
-3448                        ..params
-3449                    };
-3450                    self.set_peer_params(params);
-3451                    self.qlog.emit_peer_transport_params_restored(self, now);
-3452                }
-3453                Err(e) => {
-3454                    error!("session ticket has malformed transport parameters: {}", e);
-3455                    return;
-3456                }
-3457            }
-3458        }
-3459        trace!("0-RTT enabled");
-3460        self.zero_rtt_enabled = true;
-3461        self.zero_rtt_crypto = Some(ZeroRttCrypto { header, packet });
+3386            // On the server, self.highest_space can be Data after receiving the client's first
+3387            // flight, but we expect Handshake CRYPTO until the handshake is complete.
+3388            SpaceId::Handshake
+3389        };
+3390        // We can't decrypt Handshake packets when highest_space is Initial, CRYPTO frames in 0-RTT
+3391        // packets are illegal, and we don't process 1-RTT packets until the handshake is
+3392        // complete. Therefore, we will never see CRYPTO data from a later-than-expected space.
+3393        debug_assert!(space <= expected, "received out-of-order CRYPTO data");
+3394
+3395        let end = crypto.offset + crypto.data.len() as u64;
+3396        if space < expected && end > self.spaces[space].crypto_stream.bytes_read() {
+3397            warn!(
+3398                "received new {:?} CRYPTO data when expecting {:?}",
+3399                space, expected
+3400            );
+3401            return Err(TransportError::PROTOCOL_VIOLATION(
+3402                "new data at unexpected encryption level",
+3403            ));
+3404        }
+3405
+3406        let space = &mut self.spaces[space];
+3407        let max = end.saturating_sub(space.crypto_stream.bytes_read());
+3408        if max > self.config.crypto_buffer_size as u64 {
+3409            return Err(TransportError::CRYPTO_BUFFER_EXCEEDED(""));
+3410        }
+3411
+3412        space
+3413            .crypto_stream
+3414            .insert(crypto.offset, crypto.data.clone(), payload_len);
+3415        while let Some(chunk) = space.crypto_stream.read(usize::MAX, true) {
+3416            trace!("consumed {} CRYPTO bytes", chunk.bytes.len());
+3417            if self.crypto.read_handshake(&chunk.bytes)? {
+3418                self.events.push_back(Event::HandshakeDataReady);
+3419            }
+3420        }
+3421
+3422        Ok(())
+3423    }
+3424
+3425    fn write_crypto(&mut self) {
+3426        loop {
+3427            let space = self.highest_space;
+3428            let mut outgoing = Vec::new();
+3429            if let Some(crypto) = self.crypto.write_handshake(&mut outgoing) {
+3430                match space {
+3431                    SpaceId::Initial => {
+3432                        self.upgrade_crypto(SpaceId::Handshake, crypto);
+3433                    }
+3434                    SpaceId::Handshake => {
+3435                        self.upgrade_crypto(SpaceId::Data, crypto);
+3436                    }
+3437                    _ => unreachable!("got updated secrets during 1-RTT"),
+3438                }
+3439            }
+3440            if outgoing.is_empty() {
+3441                if space == self.highest_space {
+3442                    break;
+3443                } else {
+3444                    // Keys updated, check for more data to send
+3445                    continue;
+3446                }
+3447            }
+3448            let offset = self.spaces[space].crypto_offset;
+3449            let outgoing = Bytes::from(outgoing);
+3450            if let Some(hs) = self.state.as_handshake_mut() {
+3451                if space == SpaceId::Initial && offset == 0 && self.side.is_client() {
+3452                    hs.client_hello = Some(outgoing.clone());
+3453                }
+3454            }
+3455            self.spaces[space].crypto_offset += outgoing.len() as u64;
+3456            trace!("wrote {} {:?} CRYPTO bytes", outgoing.len(), space);
+3457            self.spaces[space].pending.crypto.push_back(frame::Crypto {
+3458                offset,
+3459                data: outgoing,
+3460            });
+3461        }
 3462    }
 3463
-3464    fn read_crypto(
-3465        &mut self,
-3466        space: SpaceId,
-3467        crypto: &frame::Crypto,
-3468        payload_len: usize,
-3469    ) -> Result<(), TransportError> {
-3470        let expected = if !self.state.is_handshake() {
-3471            SpaceId::Data
-3472        } else if self.highest_space == SpaceId::Initial {
-3473            SpaceId::Initial
-3474        } else {
-3475            // On the server, self.highest_space can be Data after receiving the client's first
-3476            // flight, but we expect Handshake CRYPTO until the handshake is complete.
-3477            SpaceId::Handshake
-3478        };
-3479        // We can't decrypt Handshake packets when highest_space is Initial, CRYPTO frames in 0-RTT
-3480        // packets are illegal, and we don't process 1-RTT packets until the handshake is
-3481        // complete. Therefore, we will never see CRYPTO data from a later-than-expected space.
-3482        debug_assert!(space <= expected, "received out-of-order CRYPTO data");
-3483
-3484        let end = crypto.offset + crypto.data.len() as u64;
-3485        if space < expected && end > self.spaces[space].crypto_stream.bytes_read() {
-3486            warn!(
-3487                "received new {:?} CRYPTO data when expecting {:?}",
-3488                space, expected
-3489            );
-3490            return Err(TransportError::PROTOCOL_VIOLATION(
-3491                "new data at unexpected encryption level",
-3492            ));
-3493        }
-3494
-3495        let space = &mut self.spaces[space];
-3496        let max = end.saturating_sub(space.crypto_stream.bytes_read());
-3497        if max > self.config.crypto_buffer_size as u64 {
-3498            return Err(TransportError::CRYPTO_BUFFER_EXCEEDED(""));
-3499        }
-3500
-3501        space
-3502            .crypto_stream
-3503            .insert(crypto.offset, crypto.data.clone(), payload_len);
-3504        while let Some(chunk) = space.crypto_stream.read(usize::MAX, true) {
-3505            trace!("consumed {} CRYPTO bytes", chunk.bytes.len());
-3506            if self.crypto.read_handshake(&chunk.bytes)? {
-3507                self.events.push_back(Event::HandshakeDataReady);
-3508            }
-3509        }
-3510
-3511        Ok(())
-3512    }
-3513
-3514    fn write_crypto(&mut self) {
-3515        loop {
-3516            let space = self.highest_space;
-3517            let mut outgoing = Vec::new();
-3518            if let Some(crypto) = self.crypto.write_handshake(&mut outgoing) {
-3519                match space {
-3520                    SpaceId::Initial => {
-3521                        self.upgrade_crypto(SpaceId::Handshake, crypto);
-3522                    }
-3523                    SpaceId::Handshake => {
-3524                        self.upgrade_crypto(SpaceId::Data, crypto);
-3525                    }
-3526                    _ => unreachable!("got updated secrets during 1-RTT"),
-3527                }
-3528            }
-3529            if outgoing.is_empty() {
-3530                if space == self.highest_space {
-3531                    break;
-3532                } else {
-3533                    // Keys updated, check for more data to send
-3534                    continue;
-3535                }
-3536            }
-3537            let offset = self.spaces[space].crypto_offset;
-3538            let outgoing = Bytes::from(outgoing);
-3539            if let Some(hs) = self.state.as_handshake_mut() {
-3540                if space == SpaceId::Initial && offset == 0 && self.side.is_client() {
-3541                    hs.client_hello = Some(outgoing.clone());
-3542                }
-3543            }
-3544            self.spaces[space].crypto_offset += outgoing.len() as u64;
-3545            trace!("wrote {} {:?} CRYPTO bytes", outgoing.len(), space);
-3546            self.spaces[space].pending.crypto.push_back(frame::Crypto {
-3547                offset,
-3548                data: outgoing,
-3549            });
-3550        }
-3551    }
-3552
-3553    /// Switch to stronger cryptography during handshake
-3554    fn upgrade_crypto(&mut self, space: SpaceId, crypto: Keys) {
-3555        debug_assert!(
-3556            self.spaces[space].crypto.is_none(),
-3557            "already reached packet space {space:?}"
-3558        );
-3559        trace!("{:?} keys ready", space);
-3560        if space == SpaceId::Data {
-3561            // Precompute the first key update
-3562            self.next_crypto = Some(
-3563                self.crypto
-3564                    .next_1rtt_keys()
-3565                    .expect("handshake should be complete"),
-3566            );
-3567        }
-3568
-3569        self.spaces[space].crypto = Some(crypto);
-3570        debug_assert!(space as usize > self.highest_space as usize);
-3571        self.highest_space = space;
-3572        if space == SpaceId::Data && self.side.is_client() {
-3573            // Discard 0-RTT keys because 1-RTT keys are available.
-3574            self.zero_rtt_crypto = None;
-3575        }
-3576    }
-3577
-3578    fn discard_space(&mut self, now: Instant, space_id: SpaceId) {
-3579        debug_assert!(space_id != SpaceId::Data);
-3580        trace!("discarding {:?} keys", space_id);
-3581        if space_id == SpaceId::Initial {
-3582            // No longer needed
-3583            if let ConnectionSide::Client { token, .. } = &mut self.side {
-3584                *token = Bytes::new();
-3585            }
-3586        }
-3587        let space = &mut self.spaces[space_id];
-3588        space.crypto = None;
-3589        let pns = space.for_path(PathId::ZERO);
-3590        pns.time_of_last_ack_eliciting_packet = None;
-3591        pns.loss_time = None;
-3592        pns.loss_probes = 0;
-3593        let sent_packets = mem::take(&mut pns.sent_packets);
-3594        let path = self.paths.get_mut(&PathId::ZERO).unwrap();
-3595        for (_, packet) in sent_packets.into_iter() {
-3596            path.data.remove_in_flight(&packet);
-3597        }
-3598
-3599        self.set_loss_detection_timer(now, PathId::ZERO)
-3600    }
-3601
-3602    fn handle_coalesced(
-3603        &mut self,
-3604        now: Instant,
-3605        network_path: FourTuple,
-3606        path_id: PathId,
-3607        ecn: Option<EcnCodepoint>,
-3608        data: BytesMut,
-3609    ) {
-3610        self.path_data_mut(path_id)
-3611            .inc_total_recvd(data.len() as u64);
-3612        let mut remaining = Some(data);
-3613        let cid_len = self
-3614            .local_cid_state
-3615            .values()
-3616            .map(|cid_state| cid_state.cid_len())
-3617            .next()
-3618            .expect("one cid_state must exist");
-3619        while let Some(data) = remaining {
-3620            match PartialDecode::new(
-3621                data,
-3622                &FixedLengthConnectionIdParser::new(cid_len),
-3623                &[self.version],
-3624                self.endpoint_config.grease_quic_bit,
-3625            ) {
-3626                Ok((partial_decode, rest)) => {
-3627                    remaining = rest;
-3628                    self.handle_decode(now, network_path, path_id, ecn, partial_decode);
-3629                }
-3630                Err(e) => {
-3631                    trace!("malformed header: {}", e);
-3632                    return;
-3633                }
-3634            }
-3635        }
-3636    }
-3637
-3638    fn handle_decode(
-3639        &mut self,
-3640        now: Instant,
-3641        network_path: FourTuple,
-3642        path_id: PathId,
-3643        ecn: Option<EcnCodepoint>,
-3644        partial_decode: PartialDecode,
-3645    ) {
-3646        let qlog = QlogRecvPacket::new(partial_decode.len());
-3647        if let Some(decoded) = packet_crypto::unprotect_header(
-3648            partial_decode,
-3649            &self.spaces,
-3650            self.zero_rtt_crypto.as_ref(),
-3651            self.peer_params.stateless_reset_token,
-3652        ) {
-3653            self.handle_packet(
-3654                now,
-3655                network_path,
-3656                path_id,
-3657                ecn,
-3658                decoded.packet,
-3659                decoded.stateless_reset,
-3660                qlog,
-3661            );
-3662        }
-3663    }
-3664
-3665    fn handle_packet(
-3666        &mut self,
-3667        now: Instant,
-3668        network_path: FourTuple,
-3669        path_id: PathId,
-3670        ecn: Option<EcnCodepoint>,
-3671        packet: Option<Packet>,
-3672        stateless_reset: bool,
-3673        mut qlog: QlogRecvPacket,
-3674    ) {
-3675        self.stats.udp_rx.ios += 1;
-3676        if let Some(ref packet) = packet {
-3677            trace!(
-3678                "got {:?} packet ({} bytes) from {} using id {}",
-3679                packet.header.space(),
-3680                packet.payload.len() + packet.header_data.len(),
-3681                network_path,
-3682                packet.header.dst_cid(),
-3683            );
-3684        }
-3685
-3686        if self.is_handshaking() {
-3687            if path_id != PathId::ZERO {
-3688                debug!(%network_path, %path_id, "discarding multipath packet during handshake");
-3689                return;
-3690            }
-3691            if network_path != self.path_data_mut(path_id).network_path {
-3692                if let Some(hs) = self.state.as_handshake() {
-3693                    if hs.allow_server_migration {
-3694                        trace!(%network_path, prev = %self.path_data(path_id).network_path, "server migrated to new remote");
-3695                        self.path_data_mut(path_id).network_path = network_path;
-3696                        self.qlog.emit_tuple_assigned(path_id, network_path, now);
-3697                    } else {
-3698                        debug!("discarding packet with unexpected remote during handshake");
-3699                        return;
-3700                    }
-3701                } else {
-3702                    debug!("discarding packet with unexpected remote during handshake");
-3703                    return;
-3704                }
-3705            }
-3706        }
-3707
-3708        let was_closed = self.state.is_closed();
-3709        let was_drained = self.state.is_drained();
-3710
-3711        let decrypted = match packet {
-3712            None => Err(None),
-3713            Some(mut packet) => self
-3714                .decrypt_packet(now, path_id, &mut packet)
-3715                .map(move |number| (packet, number)),
-3716        };
-3717        let result = match decrypted {
-3718            _ if stateless_reset => {
-3719                debug!("got stateless reset");
-3720                Err(ConnectionError::Reset)
-3721            }
-3722            Err(Some(e)) => {
-3723                warn!("illegal packet: {}", e);
-3724                Err(e.into())
-3725            }
-3726            Err(None) => {
-3727                debug!("failed to authenticate packet");
-3728                self.authentication_failures += 1;
-3729                let integrity_limit = self.spaces[self.highest_space]
-3730                    .crypto
-3731                    .as_ref()
-3732                    .unwrap()
-3733                    .packet
-3734                    .local
-3735                    .integrity_limit();
-3736                if self.authentication_failures > integrity_limit {
-3737                    Err(TransportError::AEAD_LIMIT_REACHED("integrity limit violated").into())
-3738                } else {
-3739                    return;
-3740                }
-3741            }
-3742            Ok((packet, number)) => {
-3743                qlog.header(&packet.header, number, path_id);
-3744                let span = match number {
-3745                    Some(pn) => trace_span!("recv", space = ?packet.header.space(), pn),
-3746                    None => trace_span!("recv", space = ?packet.header.space()),
-3747                };
-3748                let _guard = span.enter();
-3749
-3750                let dedup = self.spaces[packet.header.space()]
-3751                    .path_space_mut(path_id)
-3752                    .map(|pns| &mut pns.dedup);
-3753                if number.zip(dedup).is_some_and(|(n, d)| d.insert(n)) {
-3754                    debug!("discarding possible duplicate packet");
-3755                    self.qlog.emit_packet_received(qlog, now);
-3756                    return;
-3757                } else if self.state.is_handshake() && packet.header.is_short() {
-3758                    // TODO: SHOULD buffer these to improve reordering tolerance.
-3759                    trace!("dropping short packet during handshake");
-3760                    self.qlog.emit_packet_received(qlog, now);
-3761                    return;
-3762                } else {
-3763                    if let Header::Initial(InitialHeader { ref token, .. }) = packet.header {
-3764                        if let Some(hs) = self.state.as_handshake() {
-3765                            if self.side.is_server() && token != &hs.expected_token {
-3766                                // Clients must send the same retry token in every Initial. Initial
-3767                                // packets can be spoofed, so we discard rather than killing the
-3768                                // connection.
-3769                                warn!("discarding Initial with invalid retry token");
-3770                                self.qlog.emit_packet_received(qlog, now);
-3771                                return;
-3772                            }
-3773                        }
-3774                    }
-3775
-3776                    if !self.state.is_closed() {
-3777                        let spin = match packet.header {
-3778                            Header::Short { spin, .. } => spin,
-3779                            _ => false,
-3780                        };
-3781
-3782                        if self.side().is_server() && !self.abandoned_paths.contains(&path_id) {
-3783                            // Only the client is allowed to open paths
-3784                            self.ensure_path(path_id, network_path, now, number);
-3785                        }
-3786                        if self.paths.contains_key(&path_id) {
-3787                            self.on_packet_authenticated(
-3788                                now,
-3789                                packet.header.space(),
-3790                                path_id,
-3791                                ecn,
-3792                                number,
-3793                                spin,
-3794                                packet.header.is_1rtt(),
-3795                            );
-3796                        }
-3797                    }
-3798
-3799                    let res = self.process_decrypted_packet(
-3800                        now,
-3801                        network_path,
-3802                        path_id,
-3803                        number,
-3804                        packet,
-3805                        &mut qlog,
-3806                    );
-3807
-3808                    self.qlog.emit_packet_received(qlog, now);
-3809                    res
-3810                }
-3811            }
-3812        };
-3813
-3814        // State transitions for error cases
-3815        if let Err(conn_err) = result {
-3816            match conn_err {
-3817                ConnectionError::ApplicationClosed(reason) => self.state.move_to_closed(reason),
-3818                ConnectionError::ConnectionClosed(reason) => self.state.move_to_closed(reason),
-3819                ConnectionError::Reset
-3820                | ConnectionError::TransportError(TransportError {
-3821                    code: TransportErrorCode::AEAD_LIMIT_REACHED,
-3822                    ..
-3823                }) => {
-3824                    self.state.move_to_drained(Some(conn_err));
-3825                }
-3826                ConnectionError::TimedOut => {
-3827                    unreachable!("timeouts aren't generated by packet processing");
-3828                }
-3829                ConnectionError::TransportError(err) => {
-3830                    debug!("closing connection due to transport error: {}", err);
-3831                    self.state.move_to_closed(err);
-3832                }
-3833                ConnectionError::VersionMismatch => {
-3834                    self.state.move_to_draining(Some(conn_err));
-3835                }
-3836                ConnectionError::LocallyClosed => {
-3837                    unreachable!("LocallyClosed isn't generated by packet processing");
-3838                }
-3839                ConnectionError::CidsExhausted => {
-3840                    unreachable!("CidsExhausted isn't generated by packet processing");
+3464    /// Switch to stronger cryptography during handshake
+3465    fn upgrade_crypto(&mut self, space: SpaceId, crypto: Keys) {
+3466        debug_assert!(
+3467            self.spaces[space].crypto.is_none(),
+3468            "already reached packet space {space:?}"
+3469        );
+3470        trace!("{:?} keys ready", space);
+3471        if space == SpaceId::Data {
+3472            // Precompute the first key update
+3473            self.next_crypto = Some(
+3474                self.crypto
+3475                    .next_1rtt_keys()
+3476                    .expect("handshake should be complete"),
+3477            );
+3478        }
+3479
+3480        self.spaces[space].crypto = Some(crypto);
+3481        debug_assert!(space as usize > self.highest_space as usize);
+3482        self.highest_space = space;
+3483        if space == SpaceId::Data && self.side.is_client() {
+3484            // Discard 0-RTT keys because 1-RTT keys are available.
+3485            self.zero_rtt_crypto = None;
+3486        }
+3487    }
+3488
+3489    fn discard_space(&mut self, now: Instant, space_id: SpaceId) {
+3490        debug_assert!(space_id != SpaceId::Data);
+3491        trace!("discarding {:?} keys", space_id);
+3492        if space_id == SpaceId::Initial {
+3493            // No longer needed
+3494            if let ConnectionSide::Client { token, .. } = &mut self.side {
+3495                *token = Bytes::new();
+3496            }
+3497        }
+3498        let space = &mut self.spaces[space_id];
+3499        space.crypto = None;
+3500        let pns = space.for_path(PathId::ZERO);
+3501        pns.time_of_last_ack_eliciting_packet = None;
+3502        pns.loss_time = None;
+3503        pns.loss_probes = 0;
+3504        let sent_packets = mem::take(&mut pns.sent_packets);
+3505        let path = self.paths.get_mut(&PathId::ZERO).unwrap();
+3506        for (_, packet) in sent_packets.into_iter() {
+3507            path.data.remove_in_flight(&packet);
+3508        }
+3509
+3510        self.set_loss_detection_timer(now, PathId::ZERO)
+3511    }
+3512
+3513    fn handle_coalesced(
+3514        &mut self,
+3515        now: Instant,
+3516        network_path: FourTuple,
+3517        path_id: PathId,
+3518        ecn: Option<EcnCodepoint>,
+3519        data: BytesMut,
+3520    ) {
+3521        self.path_data_mut(path_id)
+3522            .inc_total_recvd(data.len() as u64);
+3523        let mut remaining = Some(data);
+3524        let cid_len = self
+3525            .local_cid_state
+3526            .values()
+3527            .map(|cid_state| cid_state.cid_len())
+3528            .next()
+3529            .expect("one cid_state must exist");
+3530        while let Some(data) = remaining {
+3531            match PartialDecode::new(
+3532                data,
+3533                &FixedLengthConnectionIdParser::new(cid_len),
+3534                &[self.version],
+3535                self.endpoint_config.grease_quic_bit,
+3536            ) {
+3537                Ok((partial_decode, rest)) => {
+3538                    remaining = rest;
+3539                    self.handle_decode(now, network_path, path_id, ecn, partial_decode);
+3540                }
+3541                Err(e) => {
+3542                    trace!("malformed header: {}", e);
+3543                    return;
+3544                }
+3545            }
+3546        }
+3547    }
+3548
+3549    fn handle_decode(
+3550        &mut self,
+3551        now: Instant,
+3552        network_path: FourTuple,
+3553        path_id: PathId,
+3554        ecn: Option<EcnCodepoint>,
+3555        partial_decode: PartialDecode,
+3556    ) {
+3557        let qlog = QlogRecvPacket::new(partial_decode.len());
+3558        if let Some(decoded) = packet_crypto::unprotect_header(
+3559            partial_decode,
+3560            &self.spaces,
+3561            self.zero_rtt_crypto.as_ref(),
+3562            self.peer_params.stateless_reset_token,
+3563        ) {
+3564            self.handle_packet(
+3565                now,
+3566                network_path,
+3567                path_id,
+3568                ecn,
+3569                decoded.packet,
+3570                decoded.stateless_reset,
+3571                qlog,
+3572            );
+3573        }
+3574    }
+3575
+3576    fn handle_packet(
+3577        &mut self,
+3578        now: Instant,
+3579        network_path: FourTuple,
+3580        path_id: PathId,
+3581        ecn: Option<EcnCodepoint>,
+3582        packet: Option<Packet>,
+3583        stateless_reset: bool,
+3584        mut qlog: QlogRecvPacket,
+3585    ) {
+3586        self.stats.udp_rx.ios += 1;
+3587        if let Some(ref packet) = packet {
+3588            trace!(
+3589                "got {:?} packet ({} bytes) from {} using id {}",
+3590                packet.header.space(),
+3591                packet.payload.len() + packet.header_data.len(),
+3592                network_path,
+3593                packet.header.dst_cid(),
+3594            );
+3595        }
+3596
+3597        if self.is_handshaking() {
+3598            if path_id != PathId::ZERO {
+3599                debug!(%network_path, %path_id, "discarding multipath packet during handshake");
+3600                return;
+3601            }
+3602            if network_path != self.path_data_mut(path_id).network_path {
+3603                if let Some(hs) = self.state.as_handshake() {
+3604                    if hs.allow_server_migration {
+3605                        trace!(%network_path, prev = %self.path_data(path_id).network_path, "server migrated to new remote");
+3606                        self.path_data_mut(path_id).network_path = network_path;
+3607                        self.qlog.emit_tuple_assigned(path_id, network_path, now);
+3608                    } else {
+3609                        debug!("discarding packet with unexpected remote during handshake");
+3610                        return;
+3611                    }
+3612                } else {
+3613                    debug!("discarding packet with unexpected remote during handshake");
+3614                    return;
+3615                }
+3616            }
+3617        }
+3618
+3619        let was_closed = self.state.is_closed();
+3620        let was_drained = self.state.is_drained();
+3621
+3622        let decrypted = match packet {
+3623            None => Err(None),
+3624            Some(mut packet) => self
+3625                .decrypt_packet(now, path_id, &mut packet)
+3626                .map(move |number| (packet, number)),
+3627        };
+3628        let result = match decrypted {
+3629            _ if stateless_reset => {
+3630                debug!("got stateless reset");
+3631                Err(ConnectionError::Reset)
+3632            }
+3633            Err(Some(e)) => {
+3634                warn!("illegal packet: {}", e);
+3635                Err(e.into())
+3636            }
+3637            Err(None) => {
+3638                debug!("failed to authenticate packet");
+3639                self.authentication_failures += 1;
+3640                let integrity_limit = self.spaces[self.highest_space]
+3641                    .crypto
+3642                    .as_ref()
+3643                    .unwrap()
+3644                    .packet
+3645                    .local
+3646                    .integrity_limit();
+3647                if self.authentication_failures > integrity_limit {
+3648                    Err(TransportError::AEAD_LIMIT_REACHED("integrity limit violated").into())
+3649                } else {
+3650                    return;
+3651                }
+3652            }
+3653            Ok((packet, number)) => {
+3654                qlog.header(&packet.header, number, path_id);
+3655                let span = match number {
+3656                    Some(pn) => trace_span!("recv", space = ?packet.header.space(), pn),
+3657                    None => trace_span!("recv", space = ?packet.header.space()),
+3658                };
+3659                let _guard = span.enter();
+3660
+3661                let dedup = self.spaces[packet.header.space()]
+3662                    .path_space_mut(path_id)
+3663                    .map(|pns| &mut pns.dedup);
+3664                if number.zip(dedup).is_some_and(|(n, d)| d.insert(n)) {
+3665                    debug!("discarding possible duplicate packet");
+3666                    self.qlog.emit_packet_received(qlog, now);
+3667                    return;
+3668                } else if self.state.is_handshake() && packet.header.is_short() {
+3669                    // TODO: SHOULD buffer these to improve reordering tolerance.
+3670                    trace!("dropping short packet during handshake");
+3671                    self.qlog.emit_packet_received(qlog, now);
+3672                    return;
+3673                } else {
+3674                    if let Header::Initial(InitialHeader { ref token, .. }) = packet.header {
+3675                        if let Some(hs) = self.state.as_handshake() {
+3676                            if self.side.is_server() && token != &hs.expected_token {
+3677                                // Clients must send the same retry token in every Initial. Initial
+3678                                // packets can be spoofed, so we discard rather than killing the
+3679                                // connection.
+3680                                warn!("discarding Initial with invalid retry token");
+3681                                self.qlog.emit_packet_received(qlog, now);
+3682                                return;
+3683                            }
+3684                        }
+3685                    }
+3686
+3687                    if !self.state.is_closed() {
+3688                        let spin = match packet.header {
+3689                            Header::Short { spin, .. } => spin,
+3690                            _ => false,
+3691                        };
+3692
+3693                        if self.side().is_server() && !self.abandoned_paths.contains(&path_id) {
+3694                            // Only the client is allowed to open paths
+3695                            self.ensure_path(path_id, network_path, now, number);
+3696                        }
+3697                        if self.paths.contains_key(&path_id) {
+3698                            self.on_packet_authenticated(
+3699                                now,
+3700                                packet.header.space(),
+3701                                path_id,
+3702                                ecn,
+3703                                number,
+3704                                spin,
+3705                                packet.header.is_1rtt(),
+3706                            );
+3707                        }
+3708                    }
+3709
+3710                    let res = self.process_decrypted_packet(
+3711                        now,
+3712                        network_path,
+3713                        path_id,
+3714                        number,
+3715                        packet,
+3716                        &mut qlog,
+3717                    );
+3718
+3719                    self.qlog.emit_packet_received(qlog, now);
+3720                    res
+3721                }
+3722            }
+3723        };
+3724
+3725        // State transitions for error cases
+3726        if let Err(conn_err) = result {
+3727            match conn_err {
+3728                ConnectionError::ApplicationClosed(reason) => self.state.move_to_closed(reason),
+3729                ConnectionError::ConnectionClosed(reason) => self.state.move_to_closed(reason),
+3730                ConnectionError::Reset
+3731                | ConnectionError::TransportError(TransportError {
+3732                    code: TransportErrorCode::AEAD_LIMIT_REACHED,
+3733                    ..
+3734                }) => {
+3735                    self.state.move_to_drained(Some(conn_err));
+3736                }
+3737                ConnectionError::TimedOut => {
+3738                    unreachable!("timeouts aren't generated by packet processing");
+3739                }
+3740                ConnectionError::TransportError(err) => {
+3741                    debug!("closing connection due to transport error: {}", err);
+3742                    self.state.move_to_closed(err);
+3743                }
+3744                ConnectionError::VersionMismatch => {
+3745                    self.state.move_to_draining(Some(conn_err));
+3746                }
+3747                ConnectionError::LocallyClosed => {
+3748                    unreachable!("LocallyClosed isn't generated by packet processing");
+3749                }
+3750                ConnectionError::CidsExhausted => {
+3751                    unreachable!("CidsExhausted isn't generated by packet processing");
+3752                }
+3753            };
+3754        }
+3755
+3756        if !was_closed && self.state.is_closed() {
+3757            self.close_common();
+3758            if !self.state.is_drained() {
+3759                self.set_close_timer(now);
+3760            }
+3761        }
+3762        if !was_drained && self.state.is_drained() {
+3763            self.endpoint_events.push_back(EndpointEventInner::Drained);
+3764            // Close timer may have been started previously, e.g. if we sent a close and got a
+3765            // stateless reset in response
+3766            self.timers
+3767                .stop(Timer::Conn(ConnTimer::Close), self.qlog.with_time(now));
+3768        }
+3769
+3770        // Transmit CONNECTION_CLOSE if necessary
+3771        if matches!(self.state.as_type(), StateType::Closed) {
+3772            // If there is no PathData for this PathId the packet was for a brand new
+3773            // path. It was a valid packet however, so the remote is valid and we want to
+3774            // send CONNECTION_CLOSE.
+3775            let path_remote = self
+3776                .paths
+3777                .get(&path_id)
+3778                .map(|p| p.data.network_path)
+3779                .unwrap_or(network_path);
+3780            self.close = network_path == path_remote;
+3781        }
+3782    }
+3783
+3784    fn process_decrypted_packet(
+3785        &mut self,
+3786        now: Instant,
+3787        network_path: FourTuple,
+3788        path_id: PathId,
+3789        number: Option<u64>,
+3790        packet: Packet,
+3791        qlog: &mut QlogRecvPacket,
+3792    ) -> Result<(), ConnectionError> {
+3793        if !self.paths.contains_key(&path_id) {
+3794            // There is a chance this is a server side, first (for this path) packet, which would
+3795            // be a protocol violation. It's more likely, however, that this is a packet of a
+3796            // pruned path
+3797            trace!(%path_id, ?number, "discarding packet for unknown path");
+3798            return Ok(());
+3799        }
+3800        let state = match self.state.as_type() {
+3801            StateType::Established => {
+3802                match packet.header.space() {
+3803                    SpaceId::Data => self.process_payload(
+3804                        now,
+3805                        network_path,
+3806                        path_id,
+3807                        number.unwrap(),
+3808                        packet,
+3809                        qlog,
+3810                    )?,
+3811                    _ if packet.header.has_frames() => {
+3812                        self.process_early_payload(now, path_id, packet, qlog)?
+3813                    }
+3814                    _ => {
+3815                        trace!("discarding unexpected pre-handshake packet");
+3816                    }
+3817                }
+3818                return Ok(());
+3819            }
+3820            StateType::Closed => {
+3821                for result in frame::Iter::new(packet.payload.freeze())? {
+3822                    let frame = match result {
+3823                        Ok(frame) => frame,
+3824                        Err(err) => {
+3825                            debug!("frame decoding error: {err:?}");
+3826                            continue;
+3827                        }
+3828                    };
+3829                    qlog.frame(&frame);
+3830
+3831                    if let Frame::Padding = frame {
+3832                        continue;
+3833                    };
+3834
+3835                    self.stats.frame_rx.record(frame.ty());
+3836
+3837                    if let Frame::Close(_error) = frame {
+3838                        self.state.move_to_draining(None);
+3839                        break;
+3840                    }
 3841                }
-3842            };
-3843        }
-3844
-3845        if !was_closed && self.state.is_closed() {
-3846            self.close_common();
-3847            if !self.state.is_drained() {
-3848                self.set_close_timer(now);
-3849            }
-3850        }
-3851        if !was_drained && self.state.is_drained() {
-3852            self.endpoint_events.push_back(EndpointEventInner::Drained);
-3853            // Close timer may have been started previously, e.g. if we sent a close and got a
-3854            // stateless reset in response
-3855            self.timers
-3856                .stop(Timer::Conn(ConnTimer::Close), self.qlog.with_time(now));
-3857        }
-3858
-3859        // Transmit CONNECTION_CLOSE if necessary
-3860        if matches!(self.state.as_type(), StateType::Closed) {
-3861            // If there is no PathData for this PathId the packet was for a brand new
-3862            // path. It was a valid packet however, so the remote is valid and we want to
-3863            // send CONNECTION_CLOSE.
-3864            let path_remote = self
-3865                .paths
-3866                .get(&path_id)
-3867                .map(|p| p.data.network_path)
-3868                .unwrap_or(network_path);
-3869            self.close = network_path == path_remote;
-3870        }
-3871    }
-3872
-3873    fn process_decrypted_packet(
-3874        &mut self,
-3875        now: Instant,
-3876        network_path: FourTuple,
-3877        path_id: PathId,
-3878        number: Option<u64>,
-3879        packet: Packet,
-3880        qlog: &mut QlogRecvPacket,
-3881    ) -> Result<(), ConnectionError> {
-3882        if !self.paths.contains_key(&path_id) {
-3883            // There is a chance this is a server side, first (for this path) packet, which would
-3884            // be a protocol violation. It's more likely, however, that this is a packet of a
-3885            // pruned path
-3886            trace!(%path_id, ?number, "discarding packet for unknown path");
-3887            return Ok(());
-3888        }
-3889        let state = match self.state.as_type() {
-3890            StateType::Established => {
-3891                match packet.header.space() {
-3892                    SpaceId::Data => self.process_payload(
-3893                        now,
-3894                        network_path,
-3895                        path_id,
-3896                        number.unwrap(),
-3897                        packet,
-3898                        qlog,
-3899                    )?,
-3900                    _ if packet.header.has_frames() => {
-3901                        self.process_early_payload(now, path_id, packet, qlog)?
-3902                    }
-3903                    _ => {
-3904                        trace!("discarding unexpected pre-handshake packet");
-3905                    }
-3906                }
-3907                return Ok(());
-3908            }
-3909            StateType::Closed => {
-3910                for result in frame::Iter::new(packet.payload.freeze())? {
-3911                    let frame = match result {
-3912                        Ok(frame) => frame,
-3913                        Err(err) => {
-3914                            debug!("frame decoding error: {err:?}");
-3915                            continue;
-3916                        }
-3917                    };
-3918                    qlog.frame(&frame);
-3919
-3920                    if let Frame::Padding = frame {
-3921                        continue;
-3922                    };
-3923
-3924                    self.stats.frame_rx.record(&frame);
-3925
-3926                    if let Frame::Close(_error) = frame {
-3927                        self.state.move_to_draining(None);
-3928                        break;
-3929                    }
-3930                }
-3931                return Ok(());
-3932            }
-3933            StateType::Draining | StateType::Drained => return Ok(()),
-3934            StateType::Handshake => self.state.as_handshake_mut().expect("checked"),
-3935        };
-3936
-3937        match packet.header {
-3938            Header::Retry {
-3939                src_cid: rem_cid, ..
-3940            } => {
-3941                debug_assert_eq!(path_id, PathId::ZERO);
-3942                if self.side.is_server() {
-3943                    return Err(TransportError::PROTOCOL_VIOLATION("client sent Retry").into());
-3944                }
-3945
-3946                let is_valid_retry = self
-3947                    .rem_cids
-3948                    .get(&path_id)
-3949                    .map(|cids| cids.active())
-3950                    .map(|orig_dst_cid| {
-3951                        self.crypto.is_valid_retry(
-3952                            orig_dst_cid,
-3953                            &packet.header_data,
-3954                            &packet.payload,
-3955                        )
-3956                    })
-3957                    .unwrap_or_default();
-3958                if self.total_authed_packets > 1
-3959                            || packet.payload.len() <= 16 // token + 16 byte tag
-3960                            || !is_valid_retry
-3961                {
-3962                    trace!("discarding invalid Retry");
-3963                    // - After the client has received and processed an Initial or Retry
-3964                    //   packet from the server, it MUST discard any subsequent Retry
-3965                    //   packets that it receives.
-3966                    // - A client MUST discard a Retry packet with a zero-length Retry Token
-3967                    //   field.
-3968                    // - Clients MUST discard Retry packets that have a Retry Integrity Tag
-3969                    //   that cannot be validated
-3970                    return Ok(());
-3971                }
-3972
-3973                trace!("retrying with CID {}", rem_cid);
-3974                let client_hello = state.client_hello.take().unwrap();
-3975                self.retry_src_cid = Some(rem_cid);
-3976                self.rem_cids
-3977                    .get_mut(&path_id)
-3978                    .expect("PathId::ZERO not yet abandoned, is_valid_retry would have been false")
-3979                    .update_initial_cid(rem_cid);
-3980                self.rem_handshake_cid = rem_cid;
-3981
-3982                let space = &mut self.spaces[SpaceId::Initial];
-3983                if let Some(info) = space.for_path(PathId::ZERO).take(0) {
-3984                    self.on_packet_acked(now, PathId::ZERO, info);
-3985                };
-3986
-3987                self.discard_space(now, SpaceId::Initial); // Make sure we clean up after
-3988                // any retransmitted Initials
-3989                self.spaces[SpaceId::Initial] = {
-3990                    let mut space = PacketSpace::new(now, SpaceId::Initial, &mut self.rng);
-3991                    space.crypto = Some(self.crypto.initial_keys(rem_cid, self.side.side()));
-3992                    space.crypto_offset = client_hello.len() as u64;
-3993                    space.for_path(path_id).next_packet_number = self.spaces[SpaceId::Initial]
-3994                        .for_path(path_id)
-3995                        .next_packet_number;
-3996                    space.pending.crypto.push_back(frame::Crypto {
-3997                        offset: 0,
-3998                        data: client_hello,
-3999                    });
-4000                    space
-4001                };
-4002
-4003                // Retransmit all 0-RTT data
-4004                let zero_rtt = mem::take(
-4005                    &mut self.spaces[SpaceId::Data]
-4006                        .for_path(PathId::ZERO)
-4007                        .sent_packets,
-4008                );
-4009                for (_, info) in zero_rtt.into_iter() {
-4010                    self.paths
-4011                        .get_mut(&PathId::ZERO)
-4012                        .unwrap()
-4013                        .remove_in_flight(&info);
-4014                    self.spaces[SpaceId::Data].pending |= info.retransmits;
-4015                }
-4016                self.streams.retransmit_all_for_0rtt();
-4017
-4018                let token_len = packet.payload.len() - 16;
-4019                let ConnectionSide::Client { ref mut token, .. } = self.side else {
-4020                    unreachable!("we already short-circuited if we're server");
-4021                };
-4022                *token = packet.payload.freeze().split_to(token_len);
-4023
-4024                self.state = State::handshake(state::Handshake {
-4025                    expected_token: Bytes::new(),
-4026                    rem_cid_set: false,
-4027                    client_hello: None,
-4028                    allow_server_migration: true,
-4029                });
-4030                Ok(())
-4031            }
-4032            Header::Long {
-4033                ty: LongType::Handshake,
-4034                src_cid: rem_cid,
-4035                dst_cid: loc_cid,
-4036                ..
-4037            } => {
-4038                debug_assert_eq!(path_id, PathId::ZERO);
-4039                if rem_cid != self.rem_handshake_cid {
-4040                    debug!(
-4041                        "discarding packet with mismatched remote CID: {} != {}",
-4042                        self.rem_handshake_cid, rem_cid
-4043                    );
-4044                    return Ok(());
-4045                }
-4046                self.on_path_validated(path_id);
-4047
-4048                self.process_early_payload(now, path_id, packet, qlog)?;
-4049                if self.state.is_closed() {
+3842                return Ok(());
+3843            }
+3844            StateType::Draining | StateType::Drained => return Ok(()),
+3845            StateType::Handshake => self.state.as_handshake_mut().expect("checked"),
+3846        };
+3847
+3848        match packet.header {
+3849            Header::Retry {
+3850                src_cid: rem_cid, ..
+3851            } => {
+3852                debug_assert_eq!(path_id, PathId::ZERO);
+3853                if self.side.is_server() {
+3854                    return Err(TransportError::PROTOCOL_VIOLATION("client sent Retry").into());
+3855                }
+3856
+3857                let is_valid_retry = self
+3858                    .rem_cids
+3859                    .get(&path_id)
+3860                    .map(|cids| cids.active())
+3861                    .map(|orig_dst_cid| {
+3862                        self.crypto.is_valid_retry(
+3863                            orig_dst_cid,
+3864                            &packet.header_data,
+3865                            &packet.payload,
+3866                        )
+3867                    })
+3868                    .unwrap_or_default();
+3869                if self.total_authed_packets > 1
+3870                            || packet.payload.len() <= 16 // token + 16 byte tag
+3871                            || !is_valid_retry
+3872                {
+3873                    trace!("discarding invalid Retry");
+3874                    // - After the client has received and processed an Initial or Retry
+3875                    //   packet from the server, it MUST discard any subsequent Retry
+3876                    //   packets that it receives.
+3877                    // - A client MUST discard a Retry packet with a zero-length Retry Token
+3878                    //   field.
+3879                    // - Clients MUST discard Retry packets that have a Retry Integrity Tag
+3880                    //   that cannot be validated
+3881                    return Ok(());
+3882                }
+3883
+3884                trace!("retrying with CID {}", rem_cid);
+3885                let client_hello = state.client_hello.take().unwrap();
+3886                self.retry_src_cid = Some(rem_cid);
+3887                self.rem_cids
+3888                    .get_mut(&path_id)
+3889                    .expect("PathId::ZERO not yet abandoned, is_valid_retry would have been false")
+3890                    .update_initial_cid(rem_cid);
+3891                self.rem_handshake_cid = rem_cid;
+3892
+3893                let space = &mut self.spaces[SpaceId::Initial];
+3894                if let Some(info) = space.for_path(PathId::ZERO).take(0) {
+3895                    self.on_packet_acked(now, PathId::ZERO, info);
+3896                };
+3897
+3898                self.discard_space(now, SpaceId::Initial); // Make sure we clean up after
+3899                // any retransmitted Initials
+3900                self.spaces[SpaceId::Initial] = {
+3901                    let mut space = PacketSpace::new(now, SpaceId::Initial, &mut self.rng);
+3902                    space.crypto = Some(self.crypto.initial_keys(rem_cid, self.side.side()));
+3903                    space.crypto_offset = client_hello.len() as u64;
+3904                    space.for_path(path_id).next_packet_number = self.spaces[SpaceId::Initial]
+3905                        .for_path(path_id)
+3906                        .next_packet_number;
+3907                    space.pending.crypto.push_back(frame::Crypto {
+3908                        offset: 0,
+3909                        data: client_hello,
+3910                    });
+3911                    space
+3912                };
+3913
+3914                // Retransmit all 0-RTT data
+3915                let zero_rtt = mem::take(
+3916                    &mut self.spaces[SpaceId::Data]
+3917                        .for_path(PathId::ZERO)
+3918                        .sent_packets,
+3919                );
+3920                for (_, info) in zero_rtt.into_iter() {
+3921                    self.paths
+3922                        .get_mut(&PathId::ZERO)
+3923                        .unwrap()
+3924                        .remove_in_flight(&info);
+3925                    self.spaces[SpaceId::Data].pending |= info.retransmits;
+3926                }
+3927                self.streams.retransmit_all_for_0rtt();
+3928
+3929                let token_len = packet.payload.len() - 16;
+3930                let ConnectionSide::Client { ref mut token, .. } = self.side else {
+3931                    unreachable!("we already short-circuited if we're server");
+3932                };
+3933                *token = packet.payload.freeze().split_to(token_len);
+3934
+3935                self.state = State::handshake(state::Handshake {
+3936                    expected_token: Bytes::new(),
+3937                    rem_cid_set: false,
+3938                    client_hello: None,
+3939                    allow_server_migration: true,
+3940                });
+3941                Ok(())
+3942            }
+3943            Header::Long {
+3944                ty: LongType::Handshake,
+3945                src_cid: rem_cid,
+3946                dst_cid: loc_cid,
+3947                ..
+3948            } => {
+3949                debug_assert_eq!(path_id, PathId::ZERO);
+3950                if rem_cid != self.rem_handshake_cid {
+3951                    debug!(
+3952                        "discarding packet with mismatched remote CID: {} != {}",
+3953                        self.rem_handshake_cid, rem_cid
+3954                    );
+3955                    return Ok(());
+3956                }
+3957                self.on_path_validated(path_id);
+3958
+3959                self.process_early_payload(now, path_id, packet, qlog)?;
+3960                if self.state.is_closed() {
+3961                    return Ok(());
+3962                }
+3963
+3964                if self.crypto.is_handshaking() {
+3965                    trace!("handshake ongoing");
+3966                    return Ok(());
+3967                }
+3968
+3969                if self.side.is_client() {
+3970                    // Client-only because server params were set from the client's Initial
+3971                    let params = self.crypto.transport_parameters()?.ok_or_else(|| {
+3972                        TransportError::new(
+3973                            TransportErrorCode::crypto(0x6d),
+3974                            "transport parameters missing".to_owned(),
+3975                        )
+3976                    })?;
+3977
+3978                    if self.has_0rtt() {
+3979                        if !self.crypto.early_data_accepted().unwrap() {
+3980                            debug_assert!(self.side.is_client());
+3981                            debug!("0-RTT rejected");
+3982                            self.accepted_0rtt = false;
+3983                            self.streams.zero_rtt_rejected();
+3984
+3985                            // Discard already-queued frames
+3986                            self.spaces[SpaceId::Data].pending = Retransmits::default();
+3987
+3988                            // Discard 0-RTT packets
+3989                            let sent_packets = mem::take(
+3990                                &mut self.spaces[SpaceId::Data].for_path(path_id).sent_packets,
+3991                            );
+3992                            for (_, packet) in sent_packets.into_iter() {
+3993                                self.paths
+3994                                    .get_mut(&path_id)
+3995                                    .unwrap()
+3996                                    .remove_in_flight(&packet);
+3997                            }
+3998                        } else {
+3999                            self.accepted_0rtt = true;
+4000                            params.validate_resumption_from(&self.peer_params)?;
+4001                        }
+4002                    }
+4003                    if let Some(token) = params.stateless_reset_token {
+4004                        // TODO(matheus23): Reset token for a remote, or for a 4-tuple?
+4005                        let remote = self.path_data(path_id).network_path.remote;
+4006                        self.endpoint_events
+4007                            .push_back(EndpointEventInner::ResetToken(path_id, remote, token));
+4008                    }
+4009                    self.handle_peer_params(params, loc_cid, rem_cid, now)?;
+4010                    self.issue_first_cids(now);
+4011                } else {
+4012                    // Server-only
+4013                    self.spaces[SpaceId::Data].pending.handshake_done = true;
+4014                    self.discard_space(now, SpaceId::Handshake);
+4015                    self.events.push_back(Event::HandshakeConfirmed);
+4016                    trace!("handshake confirmed");
+4017                }
+4018
+4019                self.events.push_back(Event::Connected);
+4020                self.state.move_to_established();
+4021                trace!("established");
+4022
+4023                // Multipath can only be enabled after the state has reached Established.
+4024                // So this can not happen any earlier.
+4025                self.issue_first_path_cids(now);
+4026                Ok(())
+4027            }
+4028            Header::Initial(InitialHeader {
+4029                src_cid: rem_cid,
+4030                dst_cid: loc_cid,
+4031                ..
+4032            }) => {
+4033                debug_assert_eq!(path_id, PathId::ZERO);
+4034                if !state.rem_cid_set {
+4035                    trace!("switching remote CID to {}", rem_cid);
+4036                    let mut state = state.clone();
+4037                    self.rem_cids
+4038                        .get_mut(&path_id)
+4039                        .expect("PathId::ZERO not yet abandoned")
+4040                        .update_initial_cid(rem_cid);
+4041                    self.rem_handshake_cid = rem_cid;
+4042                    self.orig_rem_cid = rem_cid;
+4043                    state.rem_cid_set = true;
+4044                    self.state.move_to_handshake(state);
+4045                } else if rem_cid != self.rem_handshake_cid {
+4046                    debug!(
+4047                        "discarding packet with mismatched remote CID: {} != {}",
+4048                        self.rem_handshake_cid, rem_cid
+4049                    );
 4050                    return Ok(());
 4051                }
 4052
-4053                if self.crypto.is_handshaking() {
-4054                    trace!("handshake ongoing");
-4055                    return Ok(());
-4056                }
-4057
-4058                if self.side.is_client() {
-4059                    // Client-only because server params were set from the client's Initial
-4060                    let params = self.crypto.transport_parameters()?.ok_or_else(|| {
+4053                let starting_space = self.highest_space;
+4054                self.process_early_payload(now, path_id, packet, qlog)?;
+4055
+4056                if self.side.is_server()
+4057                    && starting_space == SpaceId::Initial
+4058                    && self.highest_space != SpaceId::Initial
+4059                {
+4060                    let params = self.crypto.transport_parameters()?.ok_or_else(|| {
 4061                        TransportError::new(
 4062                            TransportErrorCode::crypto(0x6d),
 4063                            "transport parameters missing".to_owned(),
 4064                        )
 4065                    })?;
-4066
-4067                    if self.has_0rtt() {
-4068                        if !self.crypto.early_data_accepted().unwrap() {
-4069                            debug_assert!(self.side.is_client());
-4070                            debug!("0-RTT rejected");
-4071                            self.accepted_0rtt = false;
-4072                            self.streams.zero_rtt_rejected();
-4073
-4074                            // Discard already-queued frames
-4075                            self.spaces[SpaceId::Data].pending = Retransmits::default();
-4076
-4077                            // Discard 0-RTT packets
-4078                            let sent_packets = mem::take(
-4079                                &mut self.spaces[SpaceId::Data].for_path(path_id).sent_packets,
-4080                            );
-4081                            for (_, packet) in sent_packets.into_iter() {
-4082                                self.paths
-4083                                    .get_mut(&path_id)
-4084                                    .unwrap()
-4085                                    .remove_in_flight(&packet);
-4086                            }
-4087                        } else {
-4088                            self.accepted_0rtt = true;
-4089                            params.validate_resumption_from(&self.peer_params)?;
-4090                        }
-4091                    }
-4092                    if let Some(token) = params.stateless_reset_token {
-4093                        // TODO(matheus23): Reset token for a remote, or for a 4-tuple?
-4094                        let remote = self.path_data(path_id).network_path.remote;
-4095                        self.endpoint_events
-4096                            .push_back(EndpointEventInner::ResetToken(path_id, remote, token));
-4097                    }
-4098                    self.handle_peer_params(params, loc_cid, rem_cid, now)?;
-4099                    self.issue_first_cids(now);
-4100                } else {
-4101                    // Server-only
-4102                    self.spaces[SpaceId::Data].pending.handshake_done = true;
-4103                    self.discard_space(now, SpaceId::Handshake);
-4104                    self.events.push_back(Event::HandshakeConfirmed);
-4105                    trace!("handshake confirmed");
-4106                }
-4107
-4108                self.events.push_back(Event::Connected);
-4109                self.state.move_to_established();
-4110                trace!("established");
-4111
-4112                // Multipath can only be enabled after the state has reached Established.
-4113                // So this can not happen any earlier.
-4114                self.issue_first_path_cids(now);
-4115                Ok(())
-4116            }
-4117            Header::Initial(InitialHeader {
-4118                src_cid: rem_cid,
-4119                dst_cid: loc_cid,
-4120                ..
-4121            }) => {
-4122                debug_assert_eq!(path_id, PathId::ZERO);
-4123                if !state.rem_cid_set {
-4124                    trace!("switching remote CID to {}", rem_cid);
-4125                    let mut state = state.clone();
-4126                    self.rem_cids
-4127                        .get_mut(&path_id)
-4128                        .expect("PathId::ZERO not yet abandoned")
-4129                        .update_initial_cid(rem_cid);
-4130                    self.rem_handshake_cid = rem_cid;
-4131                    self.orig_rem_cid = rem_cid;
-4132                    state.rem_cid_set = true;
-4133                    self.state.move_to_handshake(state);
-4134                } else if rem_cid != self.rem_handshake_cid {
-4135                    debug!(
-4136                        "discarding packet with mismatched remote CID: {} != {}",
-4137                        self.rem_handshake_cid, rem_cid
-4138                    );
-4139                    return Ok(());
-4140                }
-4141
-4142                let starting_space = self.highest_space;
-4143                self.process_early_payload(now, path_id, packet, qlog)?;
-4144
-4145                if self.side.is_server()
-4146                    && starting_space == SpaceId::Initial
-4147                    && self.highest_space != SpaceId::Initial
-4148                {
-4149                    let params = self.crypto.transport_parameters()?.ok_or_else(|| {
-4150                        TransportError::new(
-4151                            TransportErrorCode::crypto(0x6d),
-4152                            "transport parameters missing".to_owned(),
-4153                        )
-4154                    })?;
-4155                    self.handle_peer_params(params, loc_cid, rem_cid, now)?;
-4156                    self.issue_first_cids(now);
-4157                    self.init_0rtt(now);
-4158                }
-4159                Ok(())
-4160            }
-4161            Header::Long {
-4162                ty: LongType::ZeroRtt,
-4163                ..
-4164            } => {
-4165                self.process_payload(now, network_path, path_id, number.unwrap(), packet, qlog)?;
-4166                Ok(())
-4167            }
-4168            Header::VersionNegotiate { .. } => {
-4169                if self.total_authed_packets > 1 {
-4170                    return Ok(());
-4171                }
-4172                let supported = packet
-4173                    .payload
-4174                    .chunks(4)
-4175                    .any(|x| match <[u8; 4]>::try_from(x) {
-4176                        Ok(version) => self.version == u32::from_be_bytes(version),
-4177                        Err(_) => false,
-4178                    });
-4179                if supported {
-4180                    return Ok(());
-4181                }
-4182                debug!("remote doesn't support our version");
-4183                Err(ConnectionError::VersionMismatch)
-4184            }
-4185            Header::Short { .. } => unreachable!(
-4186                "short packets received during handshake are discarded in handle_packet"
-4187            ),
-4188        }
-4189    }
-4190
-4191    /// Process an Initial or Handshake packet payload
-4192    fn process_early_payload(
-4193        &mut self,
-4194        now: Instant,
-4195        path_id: PathId,
-4196        packet: Packet,
-4197        #[allow(unused)] qlog: &mut QlogRecvPacket,
-4198    ) -> Result<(), TransportError> {
-4199        debug_assert_ne!(packet.header.space(), SpaceId::Data);
-4200        debug_assert_eq!(path_id, PathId::ZERO);
-4201        let payload_len = packet.payload.len();
-4202        let mut ack_eliciting = false;
-4203        for result in frame::Iter::new(packet.payload.freeze())? {
-4204            let frame = result?;
-4205            qlog.frame(&frame);
-4206            let span = match frame {
-4207                Frame::Padding => continue,
-4208                _ => Some(trace_span!("frame", ty = %frame.ty(), path = tracing::field::Empty)),
-4209            };
-4210
-4211            self.stats.frame_rx.record(&frame);
-4212
-4213            let _guard = span.as_ref().map(|x| x.enter());
-4214            ack_eliciting |= frame.is_ack_eliciting();
+4066                    self.handle_peer_params(params, loc_cid, rem_cid, now)?;
+4067                    self.issue_first_cids(now);
+4068                    self.init_0rtt(now);
+4069                }
+4070                Ok(())
+4071            }
+4072            Header::Long {
+4073                ty: LongType::ZeroRtt,
+4074                ..
+4075            } => {
+4076                self.process_payload(now, network_path, path_id, number.unwrap(), packet, qlog)?;
+4077                Ok(())
+4078            }
+4079            Header::VersionNegotiate { .. } => {
+4080                if self.total_authed_packets > 1 {
+4081                    return Ok(());
+4082                }
+4083                let supported = packet
+4084                    .payload
+4085                    .chunks(4)
+4086                    .any(|x| match <[u8; 4]>::try_from(x) {
+4087                        Ok(version) => self.version == u32::from_be_bytes(version),
+4088                        Err(_) => false,
+4089                    });
+4090                if supported {
+4091                    return Ok(());
+4092                }
+4093                debug!("remote doesn't support our version");
+4094                Err(ConnectionError::VersionMismatch)
+4095            }
+4096            Header::Short { .. } => unreachable!(
+4097                "short packets received during handshake are discarded in handle_packet"
+4098            ),
+4099        }
+4100    }
+4101
+4102    /// Process an Initial or Handshake packet payload
+4103    fn process_early_payload(
+4104        &mut self,
+4105        now: Instant,
+4106        path_id: PathId,
+4107        packet: Packet,
+4108        #[allow(unused)] qlog: &mut QlogRecvPacket,
+4109    ) -> Result<(), TransportError> {
+4110        debug_assert_ne!(packet.header.space(), SpaceId::Data);
+4111        debug_assert_eq!(path_id, PathId::ZERO);
+4112        let payload_len = packet.payload.len();
+4113        let mut ack_eliciting = false;
+4114        for result in frame::Iter::new(packet.payload.freeze())? {
+4115            let frame = result?;
+4116            qlog.frame(&frame);
+4117            let span = match frame {
+4118                Frame::Padding => continue,
+4119                _ => Some(trace_span!("frame", ty = %frame.ty(), path = tracing::field::Empty)),
+4120            };
+4121
+4122            self.stats.frame_rx.record(frame.ty());
+4123
+4124            let _guard = span.as_ref().map(|x| x.enter());
+4125            ack_eliciting |= frame.is_ack_eliciting();
+4126
+4127            // Process frames
+4128            if frame.is_1rtt() && packet.header.space() != SpaceId::Data {
+4129                return Err(TransportError::PROTOCOL_VIOLATION(
+4130                    "illegal frame type in handshake",
+4131                ));
+4132            }
+4133
+4134            match frame {
+4135                Frame::Padding | Frame::Ping => {}
+4136                Frame::Crypto(frame) => {
+4137                    self.read_crypto(packet.header.space(), &frame, payload_len)?;
+4138                }
+4139                Frame::Ack(ack) => {
+4140                    self.on_ack_received(now, packet.header.space(), ack)?;
+4141                }
+4142                Frame::PathAck(ack) => {
+4143                    span.as_ref()
+4144                        .map(|span| span.record("path", tracing::field::debug(&ack.path_id)));
+4145                    self.on_path_ack_received(now, packet.header.space(), ack)?;
+4146                }
+4147                Frame::Close(reason) => {
+4148                    self.state.move_to_draining(Some(reason.into()));
+4149                    return Ok(());
+4150                }
+4151                _ => {
+4152                    let mut err =
+4153                        TransportError::PROTOCOL_VIOLATION("illegal frame type in handshake");
+4154                    err.frame = frame::MaybeFrame::Known(frame.ty());
+4155                    return Err(err);
+4156                }
+4157            }
+4158        }
+4159
+4160        if ack_eliciting {
+4161            // In the initial and handshake spaces, ACKs must be sent immediately
+4162            self.spaces[packet.header.space()]
+4163                .for_path(path_id)
+4164                .pending_acks
+4165                .set_immediate_ack_required();
+4166        }
+4167
+4168        self.write_crypto();
+4169        Ok(())
+4170    }
+4171
+4172    /// Processes the packet payload, always in the data space.
+4173    fn process_payload(
+4174        &mut self,
+4175        now: Instant,
+4176        network_path: FourTuple,
+4177        path_id: PathId,
+4178        number: u64,
+4179        packet: Packet,
+4180        #[allow(unused)] qlog: &mut QlogRecvPacket,
+4181    ) -> Result<(), TransportError> {
+4182        let payload = packet.payload.freeze();
+4183        let mut is_probing_packet = true;
+4184        let mut close = None;
+4185        let payload_len = payload.len();
+4186        let mut ack_eliciting = false;
+4187        // if this packet triggers a path migration and includes a observed address frame, it's
+4188        // stored here
+4189        let mut migration_observed_addr = None;
+4190        for result in frame::Iter::new(payload)? {
+4191            let frame = result?;
+4192            qlog.frame(&frame);
+4193            let span = match frame {
+4194                Frame::Padding => continue,
+4195                _ => trace_span!("frame", ty = %frame.ty(), path = tracing::field::Empty),
+4196            };
+4197
+4198            self.stats.frame_rx.record(frame.ty());
+4199            // Crypto, Stream and Datagram frames are special cased in order no pollute
+4200            // the log with payload data
+4201            match &frame {
+4202                Frame::Crypto(f) => {
+4203                    trace!(offset = f.offset, len = f.data.len(), "got crypto frame");
+4204                }
+4205                Frame::Stream(f) => {
+4206                    trace!(id = %f.id, offset = f.offset, len = f.data.len(), fin = f.fin, "got stream frame");
+4207                }
+4208                Frame::Datagram(f) => {
+4209                    trace!(len = f.data.len(), "got datagram frame");
+4210                }
+4211                f => {
+4212                    trace!("got frame {f}");
+4213                }
+4214            }
 4215
-4216            // Process frames
-4217            if frame.is_1rtt() && packet.header.space() != SpaceId::Data {
-4218                return Err(TransportError::PROTOCOL_VIOLATION(
-4219                    "illegal frame type in handshake",
-4220                ));
-4221            }
-4222
-4223            match frame {
-4224                Frame::Padding | Frame::Ping => {}
-4225                Frame::Crypto(frame) => {
-4226                    self.read_crypto(packet.header.space(), &frame, payload_len)?;
-4227                }
-4228                Frame::Ack(ack) => {
-4229                    self.on_ack_received(now, packet.header.space(), ack)?;
-4230                }
-4231                Frame::PathAck(ack) => {
-4232                    span.as_ref()
-4233                        .map(|span| span.record("path", tracing::field::debug(&ack.path_id)));
-4234                    self.on_path_ack_received(now, packet.header.space(), ack)?;
-4235                }
-4236                Frame::Close(reason) => {
-4237                    self.state.move_to_draining(Some(reason.into()));
-4238                    return Ok(());
-4239                }
-4240                _ => {
-4241                    let mut err =
-4242                        TransportError::PROTOCOL_VIOLATION("illegal frame type in handshake");
-4243                    err.frame = frame::MaybeFrame::Known(frame.ty());
-4244                    return Err(err);
-4245                }
-4246            }
-4247        }
-4248
-4249        if ack_eliciting {
-4250            // In the initial and handshake spaces, ACKs must be sent immediately
-4251            self.spaces[packet.header.space()]
-4252                .for_path(path_id)
-4253                .pending_acks
-4254                .set_immediate_ack_required();
-4255        }
-4256
-4257        self.write_crypto();
-4258        Ok(())
-4259    }
-4260
-4261    /// Processes the packet payload, always in the data space.
-4262    fn process_payload(
-4263        &mut self,
-4264        now: Instant,
-4265        network_path: FourTuple,
-4266        path_id: PathId,
-4267        number: u64,
-4268        packet: Packet,
-4269        #[allow(unused)] qlog: &mut QlogRecvPacket,
-4270    ) -> Result<(), TransportError> {
-4271        let payload = packet.payload.freeze();
-4272        let mut is_probing_packet = true;
-4273        let mut close = None;
-4274        let payload_len = payload.len();
-4275        let mut ack_eliciting = false;
-4276        // if this packet triggers a path migration and includes a observed address frame, it's
-4277        // stored here
-4278        let mut migration_observed_addr = None;
-4279        for result in frame::Iter::new(payload)? {
-4280            let frame = result?;
-4281            qlog.frame(&frame);
-4282            let span = match frame {
-4283                Frame::Padding => continue,
-4284                _ => trace_span!("frame", ty = %frame.ty(), path = tracing::field::Empty),
-4285            };
-4286
-4287            self.stats.frame_rx.record(&frame);
-4288            // Crypto, Stream and Datagram frames are special cased in order no pollute
-4289            // the log with payload data
-4290            match &frame {
-4291                Frame::Crypto(f) => {
-4292                    trace!(offset = f.offset, len = f.data.len(), "got crypto frame");
-4293                }
-4294                Frame::Stream(f) => {
-4295                    trace!(id = %f.id, offset = f.offset, len = f.data.len(), fin = f.fin, "got stream frame");
-4296                }
-4297                Frame::Datagram(f) => {
-4298                    trace!(len = f.data.len(), "got datagram frame");
-4299                }
-4300                f => {
-4301                    trace!("got frame {f}");
-4302                }
-4303            }
-4304
-4305            let _guard = span.enter();
-4306            if packet.header.is_0rtt() {
-4307                match frame {
-4308                    Frame::Crypto(_) | Frame::Close(Close::Application(_)) => {
-4309                        return Err(TransportError::PROTOCOL_VIOLATION(
-4310                            "illegal frame type in 0-RTT",
-4311                        ));
-4312                    }
-4313                    _ => {
-4314                        if frame.is_1rtt() {
-4315                            return Err(TransportError::PROTOCOL_VIOLATION(
-4316                                "illegal frame type in 0-RTT",
-4317                            ));
-4318                        }
-4319                    }
-4320                }
-4321            }
-4322            ack_eliciting |= frame.is_ack_eliciting();
-4323
-4324            // Check whether this could be a probing packet
-4325            match frame {
-4326                Frame::Padding
-4327                | Frame::PathChallenge(_)
-4328                | Frame::PathResponse(_)
-4329                | Frame::NewConnectionId(_)
-4330                | Frame::ObservedAddr(_) => {}
-4331                _ => {
-4332                    is_probing_packet = false;
-4333                }
-4334            }
-4335
-4336            match frame {
-4337                Frame::Crypto(frame) => {
-4338                    self.read_crypto(SpaceId::Data, &frame, payload_len)?;
-4339                }
-4340                Frame::Stream(frame) => {
-4341                    if self.streams.received(frame, payload_len)?.should_transmit() {
-4342                        self.spaces[SpaceId::Data].pending.max_data = true;
-4343                    }
-4344                }
-4345                Frame::Ack(ack) => {
-4346                    self.on_ack_received(now, SpaceId::Data, ack)?;
-4347                }
-4348                Frame::PathAck(ack) => {
-4349                    span.record("path", tracing::field::debug(&ack.path_id));
-4350                    self.on_path_ack_received(now, SpaceId::Data, ack)?;
-4351                }
-4352                Frame::Padding | Frame::Ping => {}
-4353                Frame::Close(reason) => {
-4354                    close = Some(reason);
+4216            let _guard = span.enter();
+4217            if packet.header.is_0rtt() {
+4218                match frame {
+4219                    Frame::Crypto(_) | Frame::Close(Close::Application(_)) => {
+4220                        return Err(TransportError::PROTOCOL_VIOLATION(
+4221                            "illegal frame type in 0-RTT",
+4222                        ));
+4223                    }
+4224                    _ => {
+4225                        if frame.is_1rtt() {
+4226                            return Err(TransportError::PROTOCOL_VIOLATION(
+4227                                "illegal frame type in 0-RTT",
+4228                            ));
+4229                        }
+4230                    }
+4231                }
+4232            }
+4233            ack_eliciting |= frame.is_ack_eliciting();
+4234
+4235            // Check whether this could be a probing packet
+4236            match frame {
+4237                Frame::Padding
+4238                | Frame::PathChallenge(_)
+4239                | Frame::PathResponse(_)
+4240                | Frame::NewConnectionId(_)
+4241                | Frame::ObservedAddr(_) => {}
+4242                _ => {
+4243                    is_probing_packet = false;
+4244                }
+4245            }
+4246
+4247            match frame {
+4248                Frame::Crypto(frame) => {
+4249                    self.read_crypto(SpaceId::Data, &frame, payload_len)?;
+4250                }
+4251                Frame::Stream(frame) => {
+4252                    if self.streams.received(frame, payload_len)?.should_transmit() {
+4253                        self.spaces[SpaceId::Data].pending.max_data = true;
+4254                    }
+4255                }
+4256                Frame::Ack(ack) => {
+4257                    self.on_ack_received(now, SpaceId::Data, ack)?;
+4258                }
+4259                Frame::PathAck(ack) => {
+4260                    span.record("path", tracing::field::debug(&ack.path_id));
+4261                    self.on_path_ack_received(now, SpaceId::Data, ack)?;
+4262                }
+4263                Frame::Padding | Frame::Ping => {}
+4264                Frame::Close(reason) => {
+4265                    close = Some(reason);
+4266                }
+4267                Frame::PathChallenge(challenge) => {
+4268                    let path = &mut self
+4269                        .path_mut(path_id)
+4270                        .expect("payload is processed only after the path becomes known");
+4271                    path.path_responses.push(number, challenge.0, network_path);
+4272                    // At this point, update_network_path_or_discard was already called, so
+4273                    // we don't need to be lenient about `local_ip` possibly mis-matching.
+4274                    if network_path == path.network_path {
+4275                        // PATH_CHALLENGE on active path, possible off-path packet forwarding
+4276                        // attack. Send a non-probing packet to recover the active path.
+4277                        // TODO(flub): No longer true! We now path_challege also to validate
+4278                        //    the path if the path is new, without an RFC9000-style
+4279                        //    migration involved. This means we add in an extra
+4280                        //    IMMEDIATE_ACK on some challenges. It isn't really wrong to do
+4281                        //    so, but it still is something untidy. We should instead
+4282                        //    suppress this when we know the remote is still validating the
+4283                        //    path.
+4284                        match self.peer_supports_ack_frequency() {
+4285                            true => self.immediate_ack(path_id),
+4286                            false => {
+4287                                self.ping_path(path_id).ok();
+4288                            }
+4289                        }
+4290                    }
+4291                }
+4292                Frame::PathResponse(response) => {
+4293                    let path = self
+4294                        .paths
+4295                        .get_mut(&path_id)
+4296                        .expect("payload is processed only after the path becomes known");
+4297
+4298                    use PathTimer::*;
+4299                    use paths::OnPathResponseReceived::*;
+4300                    match path
+4301                        .data
+4302                        .on_path_response_received(now, response.0, network_path)
+4303                    {
+4304                        OnPath { was_open } => {
+4305                            let qlog = self.qlog.with_time(now);
+4306
+4307                            self.timers
+4308                                .stop(Timer::PerPath(path_id, PathValidation), qlog.clone());
+4309                            self.timers
+4310                                .stop(Timer::PerPath(path_id, PathOpen), qlog.clone());
+4311
+4312                            let next_challenge = path
+4313                                .data
+4314                                .earliest_expiring_challenge()
+4315                                .map(|time| time + self.ack_frequency.max_ack_delay_for_pto());
+4316                            self.timers.set_or_stop(
+4317                                Timer::PerPath(path_id, PathChallengeLost),
+4318                                next_challenge,
+4319                                qlog,
+4320                            );
+4321
+4322                            if !was_open {
+4323                                self.events
+4324                                    .push_back(Event::Path(PathEvent::Opened { id: path_id }));
+4325                                if let Some(observed) = path.data.last_observed_addr_report.as_ref()
+4326                                {
+4327                                    self.events.push_back(Event::Path(PathEvent::ObservedAddr {
+4328                                        id: path_id,
+4329                                        addr: observed.socket_addr(),
+4330                                    }));
+4331                                }
+4332                            }
+4333                            if let Some((_, ref mut prev)) = path.prev {
+4334                                prev.challenges_sent.clear();
+4335                                prev.send_new_challenge = false;
+4336                            }
+4337                        }
+4338                        OffPath => {
+4339                            debug!("Response to off-path PathChallenge!");
+4340                            let next_challenge = path
+4341                                .data
+4342                                .earliest_expiring_challenge()
+4343                                .map(|time| time + self.ack_frequency.max_ack_delay_for_pto());
+4344                            self.timers.set_or_stop(
+4345                                Timer::PerPath(path_id, PathChallengeLost),
+4346                                next_challenge,
+4347                                self.qlog.with_time(now),
+4348                            );
+4349                        }
+4350                        Invalid { expected } => {
+4351                            debug!(%response, %network_path, %expected, "ignoring invalid PATH_RESPONSE")
+4352                        }
+4353                        Unknown => debug!(%response, "ignoring invalid PATH_RESPONSE"),
+4354                    }
 4355                }
-4356                Frame::PathChallenge(challenge) => {
-4357                    let path = &mut self
-4358                        .path_mut(path_id)
-4359                        .expect("payload is processed only after the path becomes known");
-4360                    path.path_responses.push(number, challenge.0, network_path);
-4361                    // At this point, update_network_path_or_discard was already called, so
-4362                    // we don't need to be lenient about `local_ip` possibly mis-matching.
-4363                    if network_path == path.network_path {
-4364                        // PATH_CHALLENGE on active path, possible off-path packet forwarding
-4365                        // attack. Send a non-probing packet to recover the active path.
-4366                        // TODO(flub): No longer true! We now path_challege also to validate
-4367                        //    the path if the path is new, without an RFC9000-style
-4368                        //    migration involved. This means we add in an extra
-4369                        //    IMMEDIATE_ACK on some challenges. It isn't really wrong to do
-4370                        //    so, but it still is something untidy. We should instead
-4371                        //    suppress this when we know the remote is still validating the
-4372                        //    path.
-4373                        match self.peer_supports_ack_frequency() {
-4374                            true => self.immediate_ack(path_id),
-4375                            false => {
-4376                                self.ping_path(path_id).ok();
-4377                            }
-4378                        }
+4356                Frame::MaxData(frame::MaxData(bytes)) => {
+4357                    self.streams.received_max_data(bytes);
+4358                }
+4359                Frame::MaxStreamData(frame::MaxStreamData { id, offset }) => {
+4360                    self.streams.received_max_stream_data(id, offset)?;
+4361                }
+4362                Frame::MaxStreams(frame::MaxStreams { dir, count }) => {
+4363                    self.streams.received_max_streams(dir, count)?;
+4364                }
+4365                Frame::ResetStream(frame) => {
+4366                    if self.streams.received_reset(frame)?.should_transmit() {
+4367                        self.spaces[SpaceId::Data].pending.max_data = true;
+4368                    }
+4369                }
+4370                Frame::DataBlocked { offset } => {
+4371                    debug!(offset, "peer claims to be blocked at connection level");
+4372                }
+4373                Frame::StreamDataBlocked { id, offset } => {
+4374                    if id.initiator() == self.side.side() && id.dir() == Dir::Uni {
+4375                        debug!("got STREAM_DATA_BLOCKED on send-only {}", id);
+4376                        return Err(TransportError::STREAM_STATE_ERROR(
+4377                            "STREAM_DATA_BLOCKED on send-only stream",
+4378                        ));
 4379                    }
-4380                }
-4381                Frame::PathResponse(response) => {
-4382                    let path = self
-4383                        .paths
-4384                        .get_mut(&path_id)
-4385                        .expect("payload is processed only after the path becomes known");
-4386
-4387                    use PathTimer::*;
-4388                    use paths::OnPathResponseReceived::*;
-4389                    match path
-4390                        .data
-4391                        .on_path_response_received(now, response.0, network_path)
-4392                    {
-4393                        OnPath { was_open } => {
-4394                            let qlog = self.qlog.with_time(now);
-4395
-4396                            self.timers
-4397                                .stop(Timer::PerPath(path_id, PathValidation), qlog.clone());
-4398                            self.timers
-4399                                .stop(Timer::PerPath(path_id, PathOpen), qlog.clone());
-4400
-4401                            let next_challenge = path
-4402                                .data
-4403                                .earliest_expiring_challenge()
-4404                                .map(|time| time + self.ack_frequency.max_ack_delay_for_pto());
-4405                            self.timers.set_or_stop(
-4406                                Timer::PerPath(path_id, PathChallengeLost),
-4407                                next_challenge,
-4408                                qlog,
-4409                            );
-4410
-4411                            if !was_open {
-4412                                self.events
-4413                                    .push_back(Event::Path(PathEvent::Opened { id: path_id }));
-4414                                if let Some(observed) = path.data.last_observed_addr_report.as_ref()
-4415                                {
-4416                                    self.events.push_back(Event::Path(PathEvent::ObservedAddr {
-4417                                        id: path_id,
-4418                                        addr: observed.socket_addr(),
-4419                                    }));
-4420                                }
-4421                            }
-4422                            if let Some((_, ref mut prev)) = path.prev {
-4423                                prev.challenges_sent.clear();
-4424                                prev.send_new_challenge = false;
-4425                            }
-4426                        }
-4427                        OffPath => {
-4428                            debug!("Response to off-path PathChallenge!");
-4429                            let next_challenge = path
-4430                                .data
-4431                                .earliest_expiring_challenge()
-4432                                .map(|time| time + self.ack_frequency.max_ack_delay_for_pto());
-4433                            self.timers.set_or_stop(
-4434                                Timer::PerPath(path_id, PathChallengeLost),
-4435                                next_challenge,
-4436                                self.qlog.with_time(now),
-4437                            );
-4438                        }
-4439                        Invalid { expected } => {
-4440                            debug!(%response, %network_path, %expected, "ignoring invalid PATH_RESPONSE")
-4441                        }
-4442                        Unknown => debug!(%response, "ignoring invalid PATH_RESPONSE"),
-4443                    }
-4444                }
-4445                Frame::MaxData(bytes) => {
-4446                    self.streams.received_max_data(bytes);
-4447                }
-4448                Frame::MaxStreamData { id, offset } => {
-4449                    self.streams.received_max_stream_data(id, offset)?;
-4450                }
-4451                Frame::MaxStreams { dir, count } => {
-4452                    self.streams.received_max_streams(dir, count)?;
-4453                }
-4454                Frame::ResetStream(frame) => {
-4455                    if self.streams.received_reset(frame)?.should_transmit() {
-4456                        self.spaces[SpaceId::Data].pending.max_data = true;
-4457                    }
-4458                }
-4459                Frame::DataBlocked { offset } => {
-4460                    debug!(offset, "peer claims to be blocked at connection level");
-4461                }
-4462                Frame::StreamDataBlocked { id, offset } => {
-4463                    if id.initiator() == self.side.side() && id.dir() == Dir::Uni {
-4464                        debug!("got STREAM_DATA_BLOCKED on send-only {}", id);
-4465                        return Err(TransportError::STREAM_STATE_ERROR(
-4466                            "STREAM_DATA_BLOCKED on send-only stream",
-4467                        ));
-4468                    }
-4469                    debug!(
-4470                        stream = %id,
-4471                        offset, "peer claims to be blocked at stream level"
-4472                    );
-4473                }
-4474                Frame::StreamsBlocked { dir, limit } => {
-4475                    if limit > MAX_STREAM_COUNT {
-4476                        return Err(TransportError::FRAME_ENCODING_ERROR(
-4477                            "unrepresentable stream limit",
-4478                        ));
-4479                    }
-4480                    debug!(
-4481                        "peer claims to be blocked opening more than {} {} streams",
-4482                        limit, dir
-4483                    );
-4484                }
-4485                Frame::StopSending(frame::StopSending { id, error_code }) => {
-4486                    if id.initiator() != self.side.side() {
-4487                        if id.dir() == Dir::Uni {
-4488                            debug!("got STOP_SENDING on recv-only {}", id);
-4489                            return Err(TransportError::STREAM_STATE_ERROR(
-4490                                "STOP_SENDING on recv-only stream",
-4491                            ));
-4492                        }
-4493                    } else if self.streams.is_local_unopened(id) {
-4494                        return Err(TransportError::STREAM_STATE_ERROR(
-4495                            "STOP_SENDING on unopened stream",
-4496                        ));
-4497                    }
-4498                    self.streams.received_stop_sending(id, error_code);
-4499                }
-4500                Frame::RetireConnectionId(frame::RetireConnectionId { path_id, sequence }) => {
-4501                    if let Some(ref path_id) = path_id {
-4502                        span.record("path", tracing::field::debug(&path_id));
-4503                    }
-4504                    let path_id = path_id.unwrap_or_default();
-4505                    match self.local_cid_state.get_mut(&path_id) {
-4506                        None => error!(?path_id, "RETIRE_CONNECTION_ID for unknown path"),
-4507                        Some(cid_state) => {
-4508                            let allow_more_cids = cid_state
-4509                                .on_cid_retirement(sequence, self.peer_params.issue_cids_limit())?;
-4510
-4511                            // If the path has closed, we do not issue more CIDs for this path
-4512                            // For details see  https://www.ietf.org/archive/id/draft-ietf-quic-multipath-17.html#section-3.2.2
-4513                            // > an endpoint SHOULD provide new connection IDs for that path, if still open, using PATH_NEW_CONNECTION_ID frames.
-4514                            let has_path = !self.abandoned_paths.contains(&path_id);
-4515                            let allow_more_cids = allow_more_cids && has_path;
-4516
-4517                            self.endpoint_events
-4518                                .push_back(EndpointEventInner::RetireConnectionId(
-4519                                    now,
-4520                                    path_id,
-4521                                    sequence,
-4522                                    allow_more_cids,
-4523                                ));
-4524                        }
-4525                    }
-4526                }
-4527                Frame::NewConnectionId(frame) => {
-4528                    let path_id = if let Some(path_id) = frame.path_id {
-4529                        if !self.is_multipath_negotiated() {
-4530                            return Err(TransportError::PROTOCOL_VIOLATION(
-4531                                "received PATH_NEW_CONNECTION_ID frame when multipath was not negotiated",
-4532                            ));
-4533                        }
-4534                        if path_id > self.local_max_path_id {
-4535                            return Err(TransportError::PROTOCOL_VIOLATION(
-4536                                "PATH_NEW_CONNECTION_ID contains path_id exceeding current max",
-4537                            ));
-4538                        }
-4539                        path_id
-4540                    } else {
-4541                        PathId::ZERO
+4380                    debug!(
+4381                        stream = %id,
+4382                        offset, "peer claims to be blocked at stream level"
+4383                    );
+4384                }
+4385                Frame::StreamsBlocked { dir, limit } => {
+4386                    if limit > MAX_STREAM_COUNT {
+4387                        return Err(TransportError::FRAME_ENCODING_ERROR(
+4388                            "unrepresentable stream limit",
+4389                        ));
+4390                    }
+4391                    debug!(
+4392                        "peer claims to be blocked opening more than {} {} streams",
+4393                        limit, dir
+4394                    );
+4395                }
+4396                Frame::StopSending(frame::StopSending { id, error_code }) => {
+4397                    if id.initiator() != self.side.side() {
+4398                        if id.dir() == Dir::Uni {
+4399                            debug!("got STOP_SENDING on recv-only {}", id);
+4400                            return Err(TransportError::STREAM_STATE_ERROR(
+4401                                "STOP_SENDING on recv-only stream",
+4402                            ));
+4403                        }
+4404                    } else if self.streams.is_local_unopened(id) {
+4405                        return Err(TransportError::STREAM_STATE_ERROR(
+4406                            "STOP_SENDING on unopened stream",
+4407                        ));
+4408                    }
+4409                    self.streams.received_stop_sending(id, error_code);
+4410                }
+4411                Frame::RetireConnectionId(frame::RetireConnectionId { path_id, sequence }) => {
+4412                    if let Some(ref path_id) = path_id {
+4413                        span.record("path", tracing::field::debug(&path_id));
+4414                    }
+4415                    let path_id = path_id.unwrap_or_default();
+4416                    match self.local_cid_state.get_mut(&path_id) {
+4417                        None => error!(?path_id, "RETIRE_CONNECTION_ID for unknown path"),
+4418                        Some(cid_state) => {
+4419                            let allow_more_cids = cid_state
+4420                                .on_cid_retirement(sequence, self.peer_params.issue_cids_limit())?;
+4421
+4422                            // If the path has closed, we do not issue more CIDs for this path
+4423                            // For details see  https://www.ietf.org/archive/id/draft-ietf-quic-multipath-17.html#section-3.2.2
+4424                            // > an endpoint SHOULD provide new connection IDs for that path, if still open, using PATH_NEW_CONNECTION_ID frames.
+4425                            let has_path = !self.abandoned_paths.contains(&path_id);
+4426                            let allow_more_cids = allow_more_cids && has_path;
+4427
+4428                            self.endpoint_events
+4429                                .push_back(EndpointEventInner::RetireConnectionId(
+4430                                    now,
+4431                                    path_id,
+4432                                    sequence,
+4433                                    allow_more_cids,
+4434                                ));
+4435                        }
+4436                    }
+4437                }
+4438                Frame::NewConnectionId(frame) => {
+4439                    let path_id = if let Some(path_id) = frame.path_id {
+4440                        if !self.is_multipath_negotiated() {
+4441                            return Err(TransportError::PROTOCOL_VIOLATION(
+4442                                "received PATH_NEW_CONNECTION_ID frame when multipath was not negotiated",
+4443                            ));
+4444                        }
+4445                        if path_id > self.local_max_path_id {
+4446                            return Err(TransportError::PROTOCOL_VIOLATION(
+4447                                "PATH_NEW_CONNECTION_ID contains path_id exceeding current max",
+4448                            ));
+4449                        }
+4450                        path_id
+4451                    } else {
+4452                        PathId::ZERO
+4453                    };
+4454
+4455                    if self.abandoned_paths.contains(&path_id) {
+4456                        trace!("ignoring issued CID for abandoned path");
+4457                        continue;
+4458                    }
+4459                    if let Some(ref path_id) = frame.path_id {
+4460                        span.record("path", tracing::field::debug(&path_id));
+4461                    }
+4462                    let rem_cids = self
+4463                        .rem_cids
+4464                        .entry(path_id)
+4465                        .or_insert_with(|| CidQueue::new(frame.id));
+4466                    if rem_cids.active().is_empty() {
+4467                        return Err(TransportError::PROTOCOL_VIOLATION(
+4468                            "NEW_CONNECTION_ID when CIDs aren't in use",
+4469                        ));
+4470                    }
+4471                    if frame.retire_prior_to > frame.sequence {
+4472                        return Err(TransportError::PROTOCOL_VIOLATION(
+4473                            "NEW_CONNECTION_ID retiring unissued CIDs",
+4474                        ));
+4475                    }
+4476
+4477                    use crate::cid_queue::InsertError;
+4478                    match rem_cids.insert(frame) {
+4479                        Ok(None) if self.path(path_id).is_none() => {
+4480                            // if this gives us CIDs to open a new path and a nat traversal attempt
+4481                            // is underway we could try to probe a pending remote
+4482                            self.continue_nat_traversal_round(now);
+4483                        }
+4484                        Ok(None) => {}
+4485                        Ok(Some((retired, reset_token))) => {
+4486                            let pending_retired =
+4487                                &mut self.spaces[SpaceId::Data].pending.retire_cids;
+4488                            /// Ensure `pending_retired` cannot grow without bound. Limit is
+4489                            /// somewhat arbitrary but very permissive.
+4490                            const MAX_PENDING_RETIRED_CIDS: u64 = CidQueue::LEN as u64 * 10;
+4491                            // We don't bother counting in-flight frames because those are bounded
+4492                            // by congestion control.
+4493                            if (pending_retired.len() as u64)
+4494                                .saturating_add(retired.end.saturating_sub(retired.start))
+4495                                > MAX_PENDING_RETIRED_CIDS
+4496                            {
+4497                                return Err(TransportError::CONNECTION_ID_LIMIT_ERROR(
+4498                                    "queued too many retired CIDs",
+4499                                ));
+4500                            }
+4501                            pending_retired.extend(retired.map(|seq| (path_id, seq)));
+4502                            // TODO(matheus23): Reset token for a remote or a full 4-tuple?
+4503                            self.set_reset_token(path_id, network_path.remote, reset_token);
+4504                        }
+4505                        Err(InsertError::ExceedsLimit) => {
+4506                            return Err(TransportError::CONNECTION_ID_LIMIT_ERROR(""));
+4507                        }
+4508                        Err(InsertError::Retired) => {
+4509                            trace!("discarding already-retired");
+4510                            // RETIRE_CONNECTION_ID might not have been previously sent if e.g. a
+4511                            // range of connection IDs larger than the active connection ID limit
+4512                            // was retired all at once via retire_prior_to.
+4513                            self.spaces[SpaceId::Data]
+4514                                .pending
+4515                                .retire_cids
+4516                                .push((path_id, frame.sequence));
+4517                            continue;
+4518                        }
+4519                    };
+4520
+4521                    if self.side.is_server()
+4522                        && path_id == PathId::ZERO
+4523                        && self
+4524                            .rem_cids
+4525                            .get(&PathId::ZERO)
+4526                            .map(|cids| cids.active_seq() == 0)
+4527                            .unwrap_or_default()
+4528                    {
+4529                        // We're a server still using the initial remote CID for the client, so
+4530                        // let's switch immediately to enable clientside stateless resets.
+4531                        self.update_rem_cid(PathId::ZERO);
+4532                    }
+4533                }
+4534                Frame::NewToken(NewToken { token }) => {
+4535                    let ConnectionSide::Client {
+4536                        token_store,
+4537                        server_name,
+4538                        ..
+4539                    } = &self.side
+4540                    else {
+4541                        return Err(TransportError::PROTOCOL_VIOLATION("client sent NEW_TOKEN"));
 4542                    };
-4543
-4544                    if self.abandoned_paths.contains(&path_id) {
-4545                        trace!("ignoring issued CID for abandoned path");
-4546                        continue;
-4547                    }
-4548                    if let Some(ref path_id) = frame.path_id {
-4549                        span.record("path", tracing::field::debug(&path_id));
-4550                    }
-4551                    let rem_cids = self
-4552                        .rem_cids
-4553                        .entry(path_id)
-4554                        .or_insert_with(|| CidQueue::new(frame.id));
-4555                    if rem_cids.active().is_empty() {
-4556                        return Err(TransportError::PROTOCOL_VIOLATION(
-4557                            "NEW_CONNECTION_ID when CIDs aren't in use",
-4558                        ));
-4559                    }
-4560                    if frame.retire_prior_to > frame.sequence {
-4561                        return Err(TransportError::PROTOCOL_VIOLATION(
-4562                            "NEW_CONNECTION_ID retiring unissued CIDs",
-4563                        ));
+4543                    if token.is_empty() {
+4544                        return Err(TransportError::FRAME_ENCODING_ERROR("empty token"));
+4545                    }
+4546                    trace!("got new token");
+4547                    token_store.insert(server_name, token);
+4548                }
+4549                Frame::Datagram(datagram) => {
+4550                    if self
+4551                        .datagrams
+4552                        .received(datagram, &self.config.datagram_receive_buffer_size)?
+4553                    {
+4554                        self.events.push_back(Event::DatagramReceived);
+4555                    }
+4556                }
+4557                Frame::AckFrequency(ack_frequency) => {
+4558                    // This frame can only be sent in the Data space
+4559
+4560                    if !self.ack_frequency.ack_frequency_received(&ack_frequency)? {
+4561                        // The AckFrequency frame is stale (we have already received a more
+4562                        // recent one)
+4563                        continue;
 4564                    }
 4565
-4566                    use crate::cid_queue::InsertError;
-4567                    match rem_cids.insert(frame) {
-4568                        Ok(None) if self.path(path_id).is_none() => {
-4569                            // if this gives us CIDs to open a new path and a nat traversal attempt
-4570                            // is underway we could try to probe a pending remote
-4571                            self.continue_nat_traversal_round(now);
-4572                        }
-4573                        Ok(None) => {}
-4574                        Ok(Some((retired, reset_token))) => {
-4575                            let pending_retired =
-4576                                &mut self.spaces[SpaceId::Data].pending.retire_cids;
-4577                            /// Ensure `pending_retired` cannot grow without bound. Limit is
-4578                            /// somewhat arbitrary but very permissive.
-4579                            const MAX_PENDING_RETIRED_CIDS: u64 = CidQueue::LEN as u64 * 10;
-4580                            // We don't bother counting in-flight frames because those are bounded
-4581                            // by congestion control.
-4582                            if (pending_retired.len() as u64)
-4583                                .saturating_add(retired.end.saturating_sub(retired.start))
-4584                                > MAX_PENDING_RETIRED_CIDS
-4585                            {
-4586                                return Err(TransportError::CONNECTION_ID_LIMIT_ERROR(
-4587                                    "queued too many retired CIDs",
-4588                                ));
-4589                            }
-4590                            pending_retired.extend(retired.map(|seq| (path_id, seq)));
-4591                            // TODO(matheus23): Reset token for a remote or a full 4-tuple?
-4592                            self.set_reset_token(path_id, network_path.remote, reset_token);
-4593                        }
-4594                        Err(InsertError::ExceedsLimit) => {
-4595                            return Err(TransportError::CONNECTION_ID_LIMIT_ERROR(""));
-4596                        }
-4597                        Err(InsertError::Retired) => {
-4598                            trace!("discarding already-retired");
-4599                            // RETIRE_CONNECTION_ID might not have been previously sent if e.g. a
-4600                            // range of connection IDs larger than the active connection ID limit
-4601                            // was retired all at once via retire_prior_to.
-4602                            self.spaces[SpaceId::Data]
-4603                                .pending
-4604                                .retire_cids
-4605                                .push((path_id, frame.sequence));
-4606                            continue;
-4607                        }
-4608                    };
-4609
-4610                    if self.side.is_server()
-4611                        && path_id == PathId::ZERO
-4612                        && self
-4613                            .rem_cids
-4614                            .get(&PathId::ZERO)
-4615                            .map(|cids| cids.active_seq() == 0)
-4616                            .unwrap_or_default()
-4617                    {
-4618                        // We're a server still using the initial remote CID for the client, so
-4619                        // let's switch immediately to enable clientside stateless resets.
-4620                        self.update_rem_cid(PathId::ZERO);
-4621                    }
-4622                }
-4623                Frame::NewToken(NewToken { token }) => {
-4624                    let ConnectionSide::Client {
-4625                        token_store,
-4626                        server_name,
-4627                        ..
-4628                    } = &self.side
-4629                    else {
-4630                        return Err(TransportError::PROTOCOL_VIOLATION("client sent NEW_TOKEN"));
-4631                    };
-4632                    if token.is_empty() {
-4633                        return Err(TransportError::FRAME_ENCODING_ERROR("empty token"));
-4634                    }
-4635                    trace!("got new token");
-4636                    token_store.insert(server_name, token);
-4637                }
-4638                Frame::Datagram(datagram) => {
-4639                    if self
-4640                        .datagrams
-4641                        .received(datagram, &self.config.datagram_receive_buffer_size)?
-4642                    {
-4643                        self.events.push_back(Event::DatagramReceived);
-4644                    }
-4645                }
-4646                Frame::AckFrequency(ack_frequency) => {
-4647                    // This frame can only be sent in the Data space
-4648
-4649                    if !self.ack_frequency.ack_frequency_received(&ack_frequency)? {
-4650                        // The AckFrequency frame is stale (we have already received a more
-4651                        // recent one)
-4652                        continue;
-4653                    }
-4654
-4655                    // Update the params for all of our paths
-4656                    for (path_id, space) in self.spaces[SpaceId::Data].number_spaces.iter_mut() {
-4657                        space.pending_acks.set_ack_frequency_params(&ack_frequency);
-4658
-4659                        // Our `max_ack_delay` has been updated, so we may need to adjust
-4660                        // its associated timeout
-4661                        if let Some(timeout) = space
-4662                            .pending_acks
-4663                            .max_ack_delay_timeout(self.ack_frequency.max_ack_delay)
-4664                        {
-4665                            self.timers.set(
-4666                                Timer::PerPath(*path_id, PathTimer::MaxAckDelay),
-4667                                timeout,
-4668                                self.qlog.with_time(now),
-4669                            );
-4670                        }
-4671                    }
-4672                }
-4673                Frame::ImmediateAck => {
-4674                    // This frame can only be sent in the Data space
-4675                    for pns in self.spaces[SpaceId::Data].iter_paths_mut() {
-4676                        pns.pending_acks.set_immediate_ack_required();
-4677                    }
-4678                }
-4679                Frame::HandshakeDone => {
-4680                    if self.side.is_server() {
-4681                        return Err(TransportError::PROTOCOL_VIOLATION(
-4682                            "client sent HANDSHAKE_DONE",
-4683                        ));
-4684                    }
-4685                    if self.spaces[SpaceId::Handshake].crypto.is_some() {
-4686                        self.discard_space(now, SpaceId::Handshake);
+4566                    // Update the params for all of our paths
+4567                    for (path_id, space) in self.spaces[SpaceId::Data].number_spaces.iter_mut() {
+4568                        space.pending_acks.set_ack_frequency_params(&ack_frequency);
+4569
+4570                        // Our `max_ack_delay` has been updated, so we may need to adjust
+4571                        // its associated timeout
+4572                        if let Some(timeout) = space
+4573                            .pending_acks
+4574                            .max_ack_delay_timeout(self.ack_frequency.max_ack_delay)
+4575                        {
+4576                            self.timers.set(
+4577                                Timer::PerPath(*path_id, PathTimer::MaxAckDelay),
+4578                                timeout,
+4579                                self.qlog.with_time(now),
+4580                            );
+4581                        }
+4582                    }
+4583                }
+4584                Frame::ImmediateAck => {
+4585                    // This frame can only be sent in the Data space
+4586                    for pns in self.spaces[SpaceId::Data].iter_paths_mut() {
+4587                        pns.pending_acks.set_immediate_ack_required();
+4588                    }
+4589                }
+4590                Frame::HandshakeDone => {
+4591                    if self.side.is_server() {
+4592                        return Err(TransportError::PROTOCOL_VIOLATION(
+4593                            "client sent HANDSHAKE_DONE",
+4594                        ));
+4595                    }
+4596                    if self.spaces[SpaceId::Handshake].crypto.is_some() {
+4597                        self.discard_space(now, SpaceId::Handshake);
+4598                    }
+4599                    self.events.push_back(Event::HandshakeConfirmed);
+4600                    trace!("handshake confirmed");
+4601                }
+4602                Frame::ObservedAddr(observed) => {
+4603                    // check if params allows the peer to send report and this node to receive it
+4604                    trace!(seq_no = %observed.seq_no, ip = %observed.ip, port = observed.port);
+4605                    if !self
+4606                        .peer_params
+4607                        .address_discovery_role
+4608                        .should_report(&self.config.address_discovery_role)
+4609                    {
+4610                        return Err(TransportError::PROTOCOL_VIOLATION(
+4611                            "received OBSERVED_ADDRESS frame when not negotiated",
+4612                        ));
+4613                    }
+4614                    // must only be sent in data space
+4615                    if packet.header.space() != SpaceId::Data {
+4616                        return Err(TransportError::PROTOCOL_VIOLATION(
+4617                            "OBSERVED_ADDRESS frame outside data space",
+4618                        ));
+4619                    }
+4620
+4621                    let path = self.path_data_mut(path_id);
+4622                    if network_path == path.network_path {
+4623                        if let Some(updated) = path.update_observed_addr_report(observed) {
+4624                            if path.open {
+4625                                self.events.push_back(Event::Path(PathEvent::ObservedAddr {
+4626                                    id: path_id,
+4627                                    addr: updated,
+4628                                }));
+4629                            }
+4630                            // otherwise the event is reported when the path is deemed open
+4631                        }
+4632                    } else {
+4633                        // include in migration
+4634                        migration_observed_addr = Some(observed)
+4635                    }
+4636                }
+4637                Frame::PathAbandon(frame::PathAbandon {
+4638                    path_id,
+4639                    error_code,
+4640                }) => {
+4641                    span.record("path", tracing::field::debug(&path_id));
+4642                    // TODO(flub): don't really know which error code to use here.
+4643                    let already_abandoned = match self.close_path(now, path_id, error_code.into()) {
+4644                        Ok(()) => {
+4645                            trace!("peer abandoned path");
+4646                            false
+4647                        }
+4648                        Err(ClosePathError::LastOpenPath) => {
+4649                            trace!("peer abandoned last path, closing connection");
+4650                            // TODO(flub): which error code?
+4651                            return Err(TransportError::NO_ERROR("last path abandoned by peer"));
+4652                        }
+4653                        Err(ClosePathError::ClosedPath) => {
+4654                            trace!("peer abandoned already closed path");
+4655                            true
+4656                        }
+4657                    };
+4658                    // If we receive a retransmit of PATH_ABANDON then we may already have
+4659                    // abandoned this path locally.  In that case the DiscardPath timer
+4660                    // may already have fired and we no longer have any state for this path.
+4661                    // Only set this timer if we still have path state.
+4662                    if self.path(path_id).is_some() && !already_abandoned {
+4663                        // TODO(flub): Checking is_some() here followed by a number of calls
+4664                        //    that would panic if it was None is really ugly.  If only we
+4665                        //    could do something like PathData::pto().  One day we'll have
+4666                        //    unified SpaceId and PathId and this will be possible.
+4667                        let delay = self.pto(SpaceId::Data, path_id) * 3;
+4668                        self.timers.set(
+4669                            Timer::PerPath(path_id, PathTimer::DiscardPath),
+4670                            now + delay,
+4671                            self.qlog.with_time(now),
+4672                        );
+4673                    }
+4674                }
+4675                Frame::PathStatusAvailable(info) => {
+4676                    span.record("path", tracing::field::debug(&info.path_id));
+4677                    if self.is_multipath_negotiated() {
+4678                        self.on_path_status(
+4679                            info.path_id,
+4680                            PathStatus::Available,
+4681                            info.status_seq_no,
+4682                        );
+4683                    } else {
+4684                        return Err(TransportError::PROTOCOL_VIOLATION(
+4685                            "received PATH_STATUS_AVAILABLE frame when multipath was not negotiated",
+4686                        ));
 4687                    }
-4688                    self.events.push_back(Event::HandshakeConfirmed);
-4689                    trace!("handshake confirmed");
-4690                }
-4691                Frame::ObservedAddr(observed) => {
-4692                    // check if params allows the peer to send report and this node to receive it
-4693                    trace!(seq_no = %observed.seq_no, ip = %observed.ip, port = observed.port);
-4694                    if !self
-4695                        .peer_params
-4696                        .address_discovery_role
-4697                        .should_report(&self.config.address_discovery_role)
-4698                    {
-4699                        return Err(TransportError::PROTOCOL_VIOLATION(
-4700                            "received OBSERVED_ADDRESS frame when not negotiated",
-4701                        ));
-4702                    }
-4703                    // must only be sent in data space
-4704                    if packet.header.space() != SpaceId::Data {
-4705                        return Err(TransportError::PROTOCOL_VIOLATION(
-4706                            "OBSERVED_ADDRESS frame outside data space",
-4707                        ));
-4708                    }
-4709
-4710                    let path = self.path_data_mut(path_id);
-4711                    if network_path == path.network_path {
-4712                        if let Some(updated) = path.update_observed_addr_report(observed) {
-4713                            if path.open {
-4714                                self.events.push_back(Event::Path(PathEvent::ObservedAddr {
-4715                                    id: path_id,
-4716                                    addr: updated,
-4717                                }));
-4718                            }
-4719                            // otherwise the event is reported when the path is deemed open
-4720                        }
-4721                    } else {
-4722                        // include in migration
-4723                        migration_observed_addr = Some(observed)
-4724                    }
-4725                }
-4726                Frame::PathAbandon(frame::PathAbandon {
-4727                    path_id,
-4728                    error_code,
-4729                }) => {
-4730                    span.record("path", tracing::field::debug(&path_id));
-4731                    // TODO(flub): don't really know which error code to use here.
-4732                    let already_abandoned = match self.close_path(now, path_id, error_code.into()) {
-4733                        Ok(()) => {
-4734                            trace!("peer abandoned path");
-4735                            false
-4736                        }
-4737                        Err(ClosePathError::LastOpenPath) => {
-4738                            trace!("peer abandoned last path, closing connection");
-4739                            // TODO(flub): which error code?
-4740                            return Err(TransportError::NO_ERROR("last path abandoned by peer"));
-4741                        }
-4742                        Err(ClosePathError::ClosedPath) => {
-4743                            trace!("peer abandoned already closed path");
-4744                            true
-4745                        }
-4746                    };
-4747                    // If we receive a retransmit of PATH_ABANDON then we may already have
-4748                    // abandoned this path locally.  In that case the DiscardPath timer
-4749                    // may already have fired and we no longer have any state for this path.
-4750                    // Only set this timer if we still have path state.
-4751                    if self.path(path_id).is_some() && !already_abandoned {
-4752                        // TODO(flub): Checking is_some() here followed by a number of calls
-4753                        //    that would panic if it was None is really ugly.  If only we
-4754                        //    could do something like PathData::pto().  One day we'll have
-4755                        //    unified SpaceId and PathId and this will be possible.
-4756                        let delay = self.pto(SpaceId::Data, path_id) * 3;
-4757                        self.timers.set(
-4758                            Timer::PerPath(path_id, PathTimer::DiscardPath),
-4759                            now + delay,
-4760                            self.qlog.with_time(now),
-4761                        );
-4762                    }
-4763                }
-4764                Frame::PathStatusAvailable(info) => {
-4765                    span.record("path", tracing::field::debug(&info.path_id));
-4766                    if self.is_multipath_negotiated() {
-4767                        self.on_path_status(
-4768                            info.path_id,
-4769                            PathStatus::Available,
-4770                            info.status_seq_no,
-4771                        );
-4772                    } else {
-4773                        return Err(TransportError::PROTOCOL_VIOLATION(
-4774                            "received PATH_STATUS_AVAILABLE frame when multipath was not negotiated",
-4775                        ));
+4688                }
+4689                Frame::PathStatusBackup(info) => {
+4690                    span.record("path", tracing::field::debug(&info.path_id));
+4691                    if self.is_multipath_negotiated() {
+4692                        self.on_path_status(info.path_id, PathStatus::Backup, info.status_seq_no);
+4693                    } else {
+4694                        return Err(TransportError::PROTOCOL_VIOLATION(
+4695                            "received PATH_STATUS_BACKUP frame when multipath was not negotiated",
+4696                        ));
+4697                    }
+4698                }
+4699                Frame::MaxPathId(frame::MaxPathId(path_id)) => {
+4700                    span.record("path", tracing::field::debug(&path_id));
+4701                    if !self.is_multipath_negotiated() {
+4702                        return Err(TransportError::PROTOCOL_VIOLATION(
+4703                            "received MAX_PATH_ID frame when multipath was not negotiated",
+4704                        ));
+4705                    }
+4706                    // frames that do not increase the path id are ignored
+4707                    if path_id > self.remote_max_path_id {
+4708                        self.remote_max_path_id = path_id;
+4709                        self.issue_first_path_cids(now);
+4710                        while let Some(true) = self.continue_nat_traversal_round(now) {}
+4711                    }
+4712                }
+4713                Frame::PathsBlocked(frame::PathsBlocked(max_path_id)) => {
+4714                    // Receipt of a value of Maximum Path Identifier or Path Identifier that is higher than the local maximum value MUST
+4715                    // be treated as a connection error of type PROTOCOL_VIOLATION.
+4716                    // Ref <https://www.ietf.org/archive/id/draft-ietf-quic-multipath-14.html#name-paths_blocked-and-path_cids>
+4717                    if self.is_multipath_negotiated() {
+4718                        if max_path_id > self.local_max_path_id {
+4719                            return Err(TransportError::PROTOCOL_VIOLATION(
+4720                                "PATHS_BLOCKED maximum path identifier was larger than local maximum",
+4721                            ));
+4722                        }
+4723                        debug!("received PATHS_BLOCKED({:?})", max_path_id);
+4724                        // TODO(@divma): ensure max concurrent paths
+4725                    } else {
+4726                        return Err(TransportError::PROTOCOL_VIOLATION(
+4727                            "received PATHS_BLOCKED frame when not multipath was not negotiated",
+4728                        ));
+4729                    }
+4730                }
+4731                Frame::PathCidsBlocked(frame::PathCidsBlocked { path_id, next_seq }) => {
+4732                    // Nothing to do.  This is recorded in the frame stats, but otherwise we
+4733                    // always issue all CIDs we're allowed to issue, so either this is an
+4734                    // impatient peer or a bug on our side.
+4735
+4736                    // Receipt of a value of Maximum Path Identifier or Path Identifier that is higher than the local maximum value MUST
+4737                    // be treated as a connection error of type PROTOCOL_VIOLATION.
+4738                    // Ref <https://www.ietf.org/archive/id/draft-ietf-quic-multipath-14.html#name-paths_blocked-and-path_cids>
+4739                    if self.is_multipath_negotiated() {
+4740                        if path_id > self.local_max_path_id {
+4741                            return Err(TransportError::PROTOCOL_VIOLATION(
+4742                                "PATH_CIDS_BLOCKED path identifier was larger than local maximum",
+4743                            ));
+4744                        }
+4745                        if next_seq.0
+4746                            > self
+4747                                .local_cid_state
+4748                                .get(&path_id)
+4749                                .map(|cid_state| cid_state.active_seq().1 + 1)
+4750                                .unwrap_or_default()
+4751                        {
+4752                            return Err(TransportError::PROTOCOL_VIOLATION(
+4753                                "PATH_CIDS_BLOCKED next sequence number larger than in local state",
+4754                            ));
+4755                        }
+4756                        debug!(%path_id, %next_seq, "received PATH_CIDS_BLOCKED");
+4757                    } else {
+4758                        return Err(TransportError::PROTOCOL_VIOLATION(
+4759                            "received PATH_CIDS_BLOCKED frame when not multipath was not negotiated",
+4760                        ));
+4761                    }
+4762                }
+4763                Frame::AddAddress(addr) => {
+4764                    let client_state = match self.iroh_hp.client_side_mut() {
+4765                        Ok(state) => state,
+4766                        Err(err) => {
+4767                            return Err(TransportError::PROTOCOL_VIOLATION(format!(
+4768                                "Nat traversal(ADD_ADDRESS): {err}"
+4769                            )));
+4770                        }
+4771                    };
+4772
+4773                    if !client_state.check_remote_address(&addr) {
+4774                        // if the address is not valid we flag it, but update anyway
+4775                        warn!(?addr, "server sent illegal ADD_ADDRESS frame");
 4776                    }
-4777                }
-4778                Frame::PathStatusBackup(info) => {
-4779                    span.record("path", tracing::field::debug(&info.path_id));
-4780                    if self.is_multipath_negotiated() {
-4781                        self.on_path_status(info.path_id, PathStatus::Backup, info.status_seq_no);
-4782                    } else {
-4783                        return Err(TransportError::PROTOCOL_VIOLATION(
-4784                            "received PATH_STATUS_BACKUP frame when multipath was not negotiated",
-4785                        ));
-4786                    }
-4787                }
-4788                Frame::MaxPathId(frame::MaxPathId(path_id)) => {
-4789                    span.record("path", tracing::field::debug(&path_id));
-4790                    if !self.is_multipath_negotiated() {
-4791                        return Err(TransportError::PROTOCOL_VIOLATION(
-4792                            "received MAX_PATH_ID frame when multipath was not negotiated",
-4793                        ));
-4794                    }
-4795                    // frames that do not increase the path id are ignored
-4796                    if path_id > self.remote_max_path_id {
-4797                        self.remote_max_path_id = path_id;
-4798                        self.issue_first_path_cids(now);
-4799                        while let Some(true) = self.continue_nat_traversal_round(now) {}
-4800                    }
-4801                }
-4802                Frame::PathsBlocked(frame::PathsBlocked(max_path_id)) => {
-4803                    // Receipt of a value of Maximum Path Identifier or Path Identifier that is higher than the local maximum value MUST
-4804                    // be treated as a connection error of type PROTOCOL_VIOLATION.
-4805                    // Ref <https://www.ietf.org/archive/id/draft-ietf-quic-multipath-14.html#name-paths_blocked-and-path_cids>
-4806                    if self.is_multipath_negotiated() {
-4807                        if max_path_id > self.local_max_path_id {
-4808                            return Err(TransportError::PROTOCOL_VIOLATION(
-4809                                "PATHS_BLOCKED maximum path identifier was larger than local maximum",
-4810                            ));
-4811                        }
-4812                        debug!("received PATHS_BLOCKED({:?})", max_path_id);
-4813                        // TODO(@divma): ensure max concurrent paths
-4814                    } else {
-4815                        return Err(TransportError::PROTOCOL_VIOLATION(
-4816                            "received PATHS_BLOCKED frame when not multipath was not negotiated",
-4817                        ));
-4818                    }
-4819                }
-4820                Frame::PathCidsBlocked(frame::PathCidsBlocked { path_id, next_seq }) => {
-4821                    // Nothing to do.  This is recorded in the frame stats, but otherwise we
-4822                    // always issue all CIDs we're allowed to issue, so either this is an
-4823                    // impatient peer or a bug on our side.
-4824
-4825                    // Receipt of a value of Maximum Path Identifier or Path Identifier that is higher than the local maximum value MUST
-4826                    // be treated as a connection error of type PROTOCOL_VIOLATION.
-4827                    // Ref <https://www.ietf.org/archive/id/draft-ietf-quic-multipath-14.html#name-paths_blocked-and-path_cids>
-4828                    if self.is_multipath_negotiated() {
-4829                        if path_id > self.local_max_path_id {
-4830                            return Err(TransportError::PROTOCOL_VIOLATION(
-4831                                "PATH_CIDS_BLOCKED path identifier was larger than local maximum",
-4832                            ));
-4833                        }
-4834                        if next_seq.0
-4835                            > self
-4836                                .local_cid_state
-4837                                .get(&path_id)
-4838                                .map(|cid_state| cid_state.active_seq().1 + 1)
-4839                                .unwrap_or_default()
-4840                        {
-4841                            return Err(TransportError::PROTOCOL_VIOLATION(
-4842                                "PATH_CIDS_BLOCKED next sequence number larger than in local state",
-4843                            ));
-4844                        }
-4845                        debug!(%path_id, %next_seq, "received PATH_CIDS_BLOCKED");
-4846                    } else {
-4847                        return Err(TransportError::PROTOCOL_VIOLATION(
-4848                            "received PATH_CIDS_BLOCKED frame when not multipath was not negotiated",
-4849                        ));
-4850                    }
-4851                }
-4852                Frame::AddAddress(addr) => {
-4853                    let client_state = match self.iroh_hp.client_side_mut() {
-4854                        Ok(state) => state,
-4855                        Err(err) => {
-4856                            return Err(TransportError::PROTOCOL_VIOLATION(format!(
-4857                                "Nat traversal(ADD_ADDRESS): {err}"
-4858                            )));
-4859                        }
-4860                    };
-4861
-4862                    if !client_state.check_remote_address(&addr) {
-4863                        // if the address is not valid we flag it, but update anyway
-4864                        warn!(?addr, "server sent illegal ADD_ADDRESS frame");
-4865                    }
-4866
-4867                    match client_state.add_remote_address(addr) {
-4868                        Ok(maybe_added) => {
-4869                            if let Some(added) = maybe_added {
-4870                                self.events.push_back(Event::NatTraversal(
-4871                                    iroh_hp::Event::AddressAdded(added),
-4872                                ));
-4873                            }
-4874                        }
-4875                        Err(e) => {
-4876                            warn!(%e, "failed to add remote address")
-4877                        }
-4878                    }
-4879                }
-4880                Frame::RemoveAddress(addr) => {
-4881                    let client_state = match self.iroh_hp.client_side_mut() {
-4882                        Ok(state) => state,
-4883                        Err(err) => {
-4884                            return Err(TransportError::PROTOCOL_VIOLATION(format!(
-4885                                "Nat traversal(REMOVE_ADDRESS): {err}"
-4886                            )));
-4887                        }
-4888                    };
-4889                    if let Some(removed_addr) = client_state.remove_remote_address(addr) {
-4890                        self.events
-4891                            .push_back(Event::NatTraversal(iroh_hp::Event::AddressRemoved(
-4892                                removed_addr,
-4893                            )));
-4894                    }
-4895                }
-4896                Frame::ReachOut(reach_out) => {
-4897                    let server_state = match self.iroh_hp.server_side_mut() {
-4898                        Ok(state) => state,
-4899                        Err(err) => {
-4900                            return Err(TransportError::PROTOCOL_VIOLATION(format!(
-4901                                "Nat traversal(REACH_OUT): {err}"
-4902                            )));
-4903                        }
-4904                    };
-4905
-4906                    if let Err(err) = server_state.handle_reach_out(reach_out) {
-4907                        return Err(TransportError::PROTOCOL_VIOLATION(format!(
-4908                            "Nat traversal(REACH_OUT): {err}"
-4909                        )));
-4910                    }
-4911                }
-4912            }
-4913        }
-4914
-4915        let space = self.spaces[SpaceId::Data].for_path(path_id);
-4916        if space
-4917            .pending_acks
-4918            .packet_received(now, number, ack_eliciting, &space.dedup)
-4919        {
-4920            if self.abandoned_paths.contains(&path_id) {
-4921                // § 3.4.3 QUIC-MULTIPATH: promptly send ACKs for packets received from
-4922                // abandoned paths.
-4923                space.pending_acks.set_immediate_ack_required();
-4924            } else {
-4925                self.timers.set(
-4926                    Timer::PerPath(path_id, PathTimer::MaxAckDelay),
-4927                    now + self.ack_frequency.max_ack_delay,
-4928                    self.qlog.with_time(now),
-4929                );
-4930            }
+4777
+4778                    match client_state.add_remote_address(addr) {
+4779                        Ok(maybe_added) => {
+4780                            if let Some(added) = maybe_added {
+4781                                self.events.push_back(Event::NatTraversal(
+4782                                    iroh_hp::Event::AddressAdded(added),
+4783                                ));
+4784                            }
+4785                        }
+4786                        Err(e) => {
+4787                            warn!(%e, "failed to add remote address")
+4788                        }
+4789                    }
+4790                }
+4791                Frame::RemoveAddress(addr) => {
+4792                    let client_state = match self.iroh_hp.client_side_mut() {
+4793                        Ok(state) => state,
+4794                        Err(err) => {
+4795                            return Err(TransportError::PROTOCOL_VIOLATION(format!(
+4796                                "Nat traversal(REMOVE_ADDRESS): {err}"
+4797                            )));
+4798                        }
+4799                    };
+4800                    if let Some(removed_addr) = client_state.remove_remote_address(addr) {
+4801                        self.events
+4802                            .push_back(Event::NatTraversal(iroh_hp::Event::AddressRemoved(
+4803                                removed_addr,
+4804                            )));
+4805                    }
+4806                }
+4807                Frame::ReachOut(reach_out) => {
+4808                    let server_state = match self.iroh_hp.server_side_mut() {
+4809                        Ok(state) => state,
+4810                        Err(err) => {
+4811                            return Err(TransportError::PROTOCOL_VIOLATION(format!(
+4812                                "Nat traversal(REACH_OUT): {err}"
+4813                            )));
+4814                        }
+4815                    };
+4816
+4817                    if let Err(err) = server_state.handle_reach_out(reach_out) {
+4818                        return Err(TransportError::PROTOCOL_VIOLATION(format!(
+4819                            "Nat traversal(REACH_OUT): {err}"
+4820                        )));
+4821                    }
+4822                }
+4823            }
+4824        }
+4825
+4826        let space = self.spaces[SpaceId::Data].for_path(path_id);
+4827        if space
+4828            .pending_acks
+4829            .packet_received(now, number, ack_eliciting, &space.dedup)
+4830        {
+4831            if self.abandoned_paths.contains(&path_id) {
+4832                // § 3.4.3 QUIC-MULTIPATH: promptly send ACKs for packets received from
+4833                // abandoned paths.
+4834                space.pending_acks.set_immediate_ack_required();
+4835            } else {
+4836                self.timers.set(
+4837                    Timer::PerPath(path_id, PathTimer::MaxAckDelay),
+4838                    now + self.ack_frequency.max_ack_delay,
+4839                    self.qlog.with_time(now),
+4840                );
+4841            }
+4842        }
+4843
+4844        // Issue stream ID credit due to ACKs of outgoing finish/resets and incoming finish/resets
+4845        // on stopped streams. Incoming finishes/resets on open streams are not handled here as they
+4846        // are only freed, and hence only issue credit, once the application has been notified
+4847        // during a read on the stream.
+4848        let pending = &mut self.spaces[SpaceId::Data].pending;
+4849        self.streams.queue_max_stream_id(pending);
+4850
+4851        if let Some(reason) = close {
+4852            self.state.move_to_draining(Some(reason.into()));
+4853            self.close = true;
+4854        }
+4855
+4856        if Some(number) == self.spaces[SpaceId::Data].for_path(path_id).rx_packet
+4857            && !is_probing_packet
+4858            && network_path != self.path_data(path_id).network_path
+4859        {
+4860            let ConnectionSide::Server { ref server_config } = self.side else {
+4861                panic!("packets from unknown remote should be dropped by clients");
+4862            };
+4863            debug_assert!(
+4864                server_config.migration,
+4865                "migration-initiating packets should have been dropped immediately"
+4866            );
+4867            self.migrate(path_id, now, network_path, migration_observed_addr);
+4868            // Break linkability, if possible
+4869            self.update_rem_cid(path_id);
+4870            self.spin = false;
+4871        }
+4872
+4873        Ok(())
+4874    }
+4875
+4876    fn migrate(
+4877        &mut self,
+4878        path_id: PathId,
+4879        now: Instant,
+4880        network_path: FourTuple,
+4881        observed_addr: Option<ObservedAddr>,
+4882    ) {
+4883        trace!(%network_path, %path_id, "migration initiated");
+4884        self.path_generation_counter = self.path_generation_counter.wrapping_add(1);
+4885        // TODO(@divma): conditions for path migration in multipath are very specific, check them
+4886        // again to prevent path migrations that should actually create a new path
+4887
+4888        // Reset rtt/congestion state for new path unless it looks like a NAT rebinding.
+4889        // Note that the congestion window will not grow until validation terminates. Helps mitigate
+4890        // amplification attacks performed by spoofing source addresses.
+4891        let prev_pto = self.pto(SpaceId::Data, path_id);
+4892        let known_path = self.paths.get_mut(&path_id).expect("known path");
+4893        let path = &mut known_path.data;
+4894        let mut new_path = if network_path.remote.is_ipv4()
+4895            && network_path.remote.ip() == path.network_path.remote.ip()
+4896        {
+4897            PathData::from_previous(network_path, path, self.path_generation_counter, now)
+4898        } else {
+4899            let peer_max_udp_payload_size =
+4900                u16::try_from(self.peer_params.max_udp_payload_size.into_inner())
+4901                    .unwrap_or(u16::MAX);
+4902            PathData::new(
+4903                network_path,
+4904                self.allow_mtud,
+4905                Some(peer_max_udp_payload_size),
+4906                self.path_generation_counter,
+4907                now,
+4908                &self.config,
+4909            )
+4910        };
+4911        new_path.last_observed_addr_report = path.last_observed_addr_report.clone();
+4912        if let Some(report) = observed_addr {
+4913            if let Some(updated) = new_path.update_observed_addr_report(report) {
+4914                tracing::info!("adding observed addr event from migration");
+4915                self.events.push_back(Event::Path(PathEvent::ObservedAddr {
+4916                    id: path_id,
+4917                    addr: updated,
+4918                }));
+4919            }
+4920        }
+4921        new_path.send_new_challenge = true;
+4922
+4923        let mut prev = mem::replace(path, new_path);
+4924        // Don't clobber the original path if the previous one hasn't been validated yet
+4925        if !prev.is_validating_path() {
+4926            prev.send_new_challenge = true;
+4927            // We haven't updated the remote CID yet, this captures the remote CID we were using on
+4928            // the previous path.
+4929
+4930            known_path.prev = Some((self.rem_cids.get(&path_id).unwrap().active(), prev));
 4931        }
 4932
-4933        // Issue stream ID credit due to ACKs of outgoing finish/resets and incoming finish/resets
-4934        // on stopped streams. Incoming finishes/resets on open streams are not handled here as they
-4935        // are only freed, and hence only issue credit, once the application has been notified
-4936        // during a read on the stream.
-4937        let pending = &mut self.spaces[SpaceId::Data].pending;
-4938        self.streams.queue_max_stream_id(pending);
-4939
-4940        if let Some(reason) = close {
-4941            self.state.move_to_draining(Some(reason.into()));
-4942            self.close = true;
-4943        }
-4944
-4945        if Some(number) == self.spaces[SpaceId::Data].for_path(path_id).rx_packet
-4946            && !is_probing_packet
-4947            && network_path != self.path_data(path_id).network_path
-4948        {
-4949            let ConnectionSide::Server { ref server_config } = self.side else {
-4950                panic!("packets from unknown remote should be dropped by clients");
-4951            };
-4952            debug_assert!(
-4953                server_config.migration,
-4954                "migration-initiating packets should have been dropped immediately"
-4955            );
-4956            self.migrate(path_id, now, network_path, migration_observed_addr);
-4957            // Break linkability, if possible
-4958            self.update_rem_cid(path_id);
-4959            self.spin = false;
-4960        }
-4961
-4962        Ok(())
-4963    }
-4964
-4965    fn migrate(
-4966        &mut self,
-4967        path_id: PathId,
-4968        now: Instant,
-4969        network_path: FourTuple,
-4970        observed_addr: Option<ObservedAddr>,
-4971    ) {
-4972        trace!(%network_path, %path_id, "migration initiated");
-4973        self.path_generation_counter = self.path_generation_counter.wrapping_add(1);
-4974        // TODO(@divma): conditions for path migration in multipath are very specific, check them
-4975        // again to prevent path migrations that should actually create a new path
-4976
-4977        // Reset rtt/congestion state for new path unless it looks like a NAT rebinding.
-4978        // Note that the congestion window will not grow until validation terminates. Helps mitigate
-4979        // amplification attacks performed by spoofing source addresses.
-4980        let prev_pto = self.pto(SpaceId::Data, path_id);
-4981        let known_path = self.paths.get_mut(&path_id).expect("known path");
-4982        let path = &mut known_path.data;
-4983        let mut new_path = if network_path.remote.is_ipv4()
-4984            && network_path.remote.ip() == path.network_path.remote.ip()
-4985        {
-4986            PathData::from_previous(network_path, path, self.path_generation_counter, now)
-4987        } else {
-4988            let peer_max_udp_payload_size =
-4989                u16::try_from(self.peer_params.max_udp_payload_size.into_inner())
-4990                    .unwrap_or(u16::MAX);
-4991            PathData::new(
-4992                network_path,
-4993                self.allow_mtud,
-4994                Some(peer_max_udp_payload_size),
-4995                self.path_generation_counter,
-4996                now,
-4997                &self.config,
-4998            )
-4999        };
-5000        new_path.last_observed_addr_report = path.last_observed_addr_report.clone();
-5001        if let Some(report) = observed_addr {
-5002            if let Some(updated) = new_path.update_observed_addr_report(report) {
-5003                tracing::info!("adding observed addr event from migration");
-5004                self.events.push_back(Event::Path(PathEvent::ObservedAddr {
-5005                    id: path_id,
-5006                    addr: updated,
-5007                }));
-5008            }
-5009        }
-5010        new_path.send_new_challenge = true;
-5011
-5012        let mut prev = mem::replace(path, new_path);
-5013        // Don't clobber the original path if the previous one hasn't been validated yet
-5014        if !prev.is_validating_path() {
-5015            prev.send_new_challenge = true;
-5016            // We haven't updated the remote CID yet, this captures the remote CID we were using on
-5017            // the previous path.
-5018
-5019            known_path.prev = Some((self.rem_cids.get(&path_id).unwrap().active(), prev));
-5020        }
-5021
-5022        // We need to re-assign the correct remote to this path in qlog
-5023        self.qlog.emit_tuple_assigned(path_id, network_path, now);
-5024
-5025        self.timers.set(
-5026            Timer::PerPath(path_id, PathTimer::PathValidation),
-5027            now + 3 * cmp::max(self.pto(SpaceId::Data, path_id), prev_pto),
-5028            self.qlog.with_time(now),
-5029        );
+4933        // We need to re-assign the correct remote to this path in qlog
+4934        self.qlog.emit_tuple_assigned(path_id, network_path, now);
+4935
+4936        self.timers.set(
+4937            Timer::PerPath(path_id, PathTimer::PathValidation),
+4938            now + 3 * cmp::max(self.pto(SpaceId::Data, path_id), prev_pto),
+4939            self.qlog.with_time(now),
+4940        );
+4941    }
+4942
+4943    /// Handle a change in the local address, i.e. an active migration
+4944    pub fn local_address_changed(&mut self) {
+4945        // TODO(flub): if multipath is enabled this needs to create a new path entirely.
+4946        self.update_rem_cid(PathId::ZERO);
+4947        self.ping();
+4948    }
+4949
+4950    /// Switch to a previously unused remote connection ID, if possible
+4951    fn update_rem_cid(&mut self, path_id: PathId) {
+4952        let Some((reset_token, retired)) =
+4953            self.rem_cids.get_mut(&path_id).and_then(|cids| cids.next())
+4954        else {
+4955            return;
+4956        };
+4957
+4958        // Retire the current remote CID and any CIDs we had to skip.
+4959        self.spaces[SpaceId::Data]
+4960            .pending
+4961            .retire_cids
+4962            .extend(retired.map(|seq| (path_id, seq)));
+4963        let remote = self.path_data(path_id).network_path.remote;
+4964        self.set_reset_token(path_id, remote, reset_token);
+4965    }
+4966
+4967    /// Sends this reset token to the endpoint
+4968    ///
+4969    /// The endpoint needs to know the reset tokens issued by the peer, so that if the peer
+4970    /// sends a reset token it knows to route it to this connection. See RFC 9000 section
+4971    /// 10.3. Stateless Reset.
+4972    ///
+4973    /// Reset tokens are different for each path, the endpoint identifies paths by peer
+4974    /// socket address however, not by path ID.
+4975    fn set_reset_token(&mut self, path_id: PathId, remote: SocketAddr, reset_token: ResetToken) {
+4976        self.endpoint_events
+4977            .push_back(EndpointEventInner::ResetToken(path_id, remote, reset_token));
+4978
+4979        // During the handshake the server sends a reset token in the transport
+4980        // parameters. When we are the client and we receive the reset token during the
+4981        // handshake we want this to affect our peer transport parameters.
+4982        // TODO(flub): Pretty sure this is pointless, the entire params is overwritten
+4983        //    shortly after this was called.  And then the params don't have this anymore.
+4984        if path_id == PathId::ZERO {
+4985            self.peer_params.stateless_reset_token = Some(reset_token);
+4986        }
+4987    }
+4988
+4989    /// Issue an initial set of connection IDs to the peer upon connection
+4990    fn issue_first_cids(&mut self, now: Instant) {
+4991        if self
+4992            .local_cid_state
+4993            .get(&PathId::ZERO)
+4994            .expect("PathId::ZERO exists when the connection is created")
+4995            .cid_len()
+4996            == 0
+4997        {
+4998            return;
+4999        }
+5000
+5001        // Subtract 1 to account for the CID we supplied while handshaking
+5002        let mut n = self.peer_params.issue_cids_limit() - 1;
+5003        if let ConnectionSide::Server { server_config } = &self.side {
+5004            if server_config.has_preferred_address() {
+5005                // We also sent a CID in the transport parameters
+5006                n -= 1;
+5007            }
+5008        }
+5009        self.endpoint_events
+5010            .push_back(EndpointEventInner::NeedIdentifiers(PathId::ZERO, now, n));
+5011    }
+5012
+5013    /// Issues an initial set of CIDs for paths that have not yet had any CIDs issued
+5014    ///
+5015    /// Later CIDs are issued when CIDs expire or are retired by the peer.
+5016    fn issue_first_path_cids(&mut self, now: Instant) {
+5017        if let Some(max_path_id) = self.max_path_id() {
+5018            let mut path_id = self.max_path_id_with_cids.next();
+5019            while path_id <= max_path_id {
+5020                self.endpoint_events
+5021                    .push_back(EndpointEventInner::NeedIdentifiers(
+5022                        path_id,
+5023                        now,
+5024                        self.peer_params.issue_cids_limit(),
+5025                    ));
+5026                path_id = path_id.next();
+5027            }
+5028            self.max_path_id_with_cids = max_path_id;
+5029        }
 5030    }
 5031
-5032    /// Handle a change in the local address, i.e. an active migration
-5033    pub fn local_address_changed(&mut self) {
-5034        // TODO(flub): if multipath is enabled this needs to create a new path entirely.
-5035        self.update_rem_cid(PathId::ZERO);
-5036        self.ping();
-5037    }
-5038
-5039    /// Switch to a previously unused remote connection ID, if possible
-5040    fn update_rem_cid(&mut self, path_id: PathId) {
-5041        let Some((reset_token, retired)) =
-5042            self.rem_cids.get_mut(&path_id).and_then(|cids| cids.next())
-5043        else {
-5044            return;
-5045        };
-5046
-5047        // Retire the current remote CID and any CIDs we had to skip.
-5048        self.spaces[SpaceId::Data]
-5049            .pending
-5050            .retire_cids
-5051            .extend(retired.map(|seq| (path_id, seq)));
-5052        let remote = self.path_data(path_id).network_path.remote;
-5053        self.set_reset_token(path_id, remote, reset_token);
-5054    }
-5055
-5056    /// Sends this reset token to the endpoint
-5057    ///
-5058    /// The endpoint needs to know the reset tokens issued by the peer, so that if the peer
-5059    /// sends a reset token it knows to route it to this connection. See RFC 9000 section
-5060    /// 10.3. Stateless Reset.
-5061    ///
-5062    /// Reset tokens are different for each path, the endpoint identifies paths by peer
-5063    /// socket address however, not by path ID.
-5064    fn set_reset_token(&mut self, path_id: PathId, remote: SocketAddr, reset_token: ResetToken) {
-5065        self.endpoint_events
-5066            .push_back(EndpointEventInner::ResetToken(path_id, remote, reset_token));
-5067
-5068        // During the handshake the server sends a reset token in the transport
-5069        // parameters. When we are the client and we receive the reset token during the
-5070        // handshake we want this to affect our peer transport parameters.
-5071        // TODO(flub): Pretty sure this is pointless, the entire params is overwritten
-5072        //    shortly after this was called.  And then the params don't have this anymore.
-5073        if path_id == PathId::ZERO {
-5074            self.peer_params.stateless_reset_token = Some(reset_token);
-5075        }
-5076    }
-5077
-5078    /// Issue an initial set of connection IDs to the peer upon connection
-5079    fn issue_first_cids(&mut self, now: Instant) {
-5080        if self
-5081            .local_cid_state
-5082            .get(&PathId::ZERO)
-5083            .expect("PathId::ZERO exists when the connection is created")
-5084            .cid_len()
-5085            == 0
-5086        {
-5087            return;
-5088        }
-5089
-5090        // Subtract 1 to account for the CID we supplied while handshaking
-5091        let mut n = self.peer_params.issue_cids_limit() - 1;
-5092        if let ConnectionSide::Server { server_config } = &self.side {
-5093            if server_config.has_preferred_address() {
-5094                // We also sent a CID in the transport parameters
-5095                n -= 1;
-5096            }
-5097        }
-5098        self.endpoint_events
-5099            .push_back(EndpointEventInner::NeedIdentifiers(PathId::ZERO, now, n));
-5100    }
-5101
-5102    /// Issues an initial set of CIDs for paths that have not yet had any CIDs issued
-5103    ///
-5104    /// Later CIDs are issued when CIDs expire or are retired by the peer.
-5105    fn issue_first_path_cids(&mut self, now: Instant) {
-5106        if let Some(max_path_id) = self.max_path_id() {
-5107            let mut path_id = self.max_path_id_with_cids.next();
-5108            while path_id <= max_path_id {
-5109                self.endpoint_events
-5110                    .push_back(EndpointEventInner::NeedIdentifiers(
-5111                        path_id,
-5112                        now,
-5113                        self.peer_params.issue_cids_limit(),
-5114                    ));
-5115                path_id = path_id.next();
-5116            }
-5117            self.max_path_id_with_cids = max_path_id;
-5118        }
-5119    }
-5120
-5121    /// Populates a packet with frames
-5122    ///
-5123    /// This tries to fit as many frames as possible into the packet.
-5124    ///
-5125    /// *path_exclusive_only* means to only build frames which can only be sent on this
-5126    /// *path.  This is used in multipath for backup paths while there is still an active
-5127    /// *path.
-5128    fn populate_packet(
-5129        &mut self,
-5130        now: Instant,
-5131        space_id: SpaceId,
-5132        path_id: PathId,
-5133        path_exclusive_only: bool,
-5134        buf: &mut impl BufMut,
-5135        pn: u64,
-5136        #[allow(unused)] qlog: &mut QlogSentPacket,
-5137    ) -> SentFrames {
-5138        let mut sent = SentFrames::default();
-5139        let is_multipath_negotiated = self.is_multipath_negotiated();
-5140        let space = &mut self.spaces[space_id];
-5141        let path = &mut self.paths.get_mut(&path_id).expect("known path").data;
-5142        let is_0rtt = space_id == SpaceId::Data && space.crypto.is_none();
-5143        space
-5144            .for_path(path_id)
-5145            .pending_acks
-5146            .maybe_ack_non_eliciting();
-5147
-5148        // HANDSHAKE_DONE
-5149        if !is_0rtt && mem::replace(&mut space.pending.handshake_done, false) {
-5150            trace!("HANDSHAKE_DONE");
-5151            buf.write(frame::FrameType::HandshakeDone);
-5152            qlog.frame(&Frame::HandshakeDone);
-5153            sent.retransmits.get_or_create().handshake_done = true;
-5154            // This is just a u8 counter and the frame is typically just sent once
-5155            self.stats.frame_tx.handshake_done =
-5156                self.stats.frame_tx.handshake_done.saturating_add(1);
-5157        }
-5158
-5159        // REACH_OUT
-5160        // TODO(@divma): path explusive considerations
-5161        if let Some((round, addresses)) = space.pending.reach_out.as_mut() {
-5162            while let Some(local_addr) = addresses.pop() {
-5163                let reach_out = frame::ReachOut::new(*round, local_addr);
-5164                if buf.remaining_mut() > reach_out.size() {
-5165                    trace!(%round, ?local_addr, "REACH_OUT");
-5166                    reach_out.encode(buf);
-5167                    let sent_reachouts = sent
-5168                        .retransmits
-5169                        .get_or_create()
-5170                        .reach_out
-5171                        .get_or_insert_with(|| (*round, Default::default()));
-5172                    sent_reachouts.1.push(local_addr);
-5173                    self.stats.frame_tx.reach_out = self.stats.frame_tx.reach_out.saturating_add(1);
-5174                    qlog.frame(&Frame::ReachOut(reach_out));
-5175                } else {
-5176                    addresses.push(local_addr);
-5177                    break;
-5178                }
-5179            }
-5180            if addresses.is_empty() {
-5181                space.pending.reach_out = None;
-5182            }
-5183        }
-5184
-5185        // OBSERVED_ADDR
-5186        if !path_exclusive_only
-5187            && space_id == SpaceId::Data
-5188            && self
-5189                .config
-5190                .address_discovery_role
-5191                .should_report(&self.peer_params.address_discovery_role)
-5192            && (!path.observed_addr_sent || space.pending.observed_addr)
-5193        {
-5194            let frame =
-5195                frame::ObservedAddr::new(path.network_path.remote, self.next_observed_addr_seq_no);
-5196            if buf.remaining_mut() > frame.size() {
-5197                trace!(seq = %frame.seq_no, ip = %frame.ip, port = frame.port, "OBSERVED_ADDRESS");
-5198                frame.encode(buf);
-5199
-5200                self.next_observed_addr_seq_no = self.next_observed_addr_seq_no.saturating_add(1u8);
-5201                path.observed_addr_sent = true;
-5202
-5203                self.stats.frame_tx.observed_addr += 1;
-5204                sent.retransmits.get_or_create().observed_addr = true;
-5205                space.pending.observed_addr = false;
-5206                qlog.frame(&Frame::ObservedAddr(frame));
-5207            }
-5208        }
-5209
-5210        // PING
-5211        if mem::replace(&mut space.for_path(path_id).ping_pending, false) {
-5212            trace!("PING");
-5213            buf.write(frame::FrameType::Ping);
-5214            sent.non_retransmits = true;
-5215            self.stats.frame_tx.ping += 1;
-5216            qlog.frame(&Frame::Ping);
-5217        }
-5218
-5219        // IMMEDIATE_ACK
-5220        if mem::replace(&mut space.for_path(path_id).immediate_ack_pending, false) {
-5221            debug_assert_eq!(
-5222                space_id,
-5223                SpaceId::Data,
-5224                "immediate acks must be sent in the data space"
-5225            );
-5226            trace!("IMMEDIATE_ACK");
-5227            buf.write(frame::FrameType::ImmediateAck);
-5228            sent.non_retransmits = true;
-5229            self.stats.frame_tx.immediate_ack += 1;
-5230            qlog.frame(&Frame::ImmediateAck);
-5231        }
-5232
-5233        // ACK
-5234        // TODO(flub): Should this send acks for this path anyway?
-5235
-5236        if !path_exclusive_only {
-5237            for path_id in space
-5238                .number_spaces
-5239                .iter_mut()
-5240                .filter(|(_, pns)| pns.pending_acks.can_send())
-5241                .map(|(&path_id, _)| path_id)
-5242                .collect::<Vec<_>>()
-5243            {
-5244                Self::populate_acks(
-5245                    now,
-5246                    self.receiving_ecn,
-5247                    &mut sent,
-5248                    path_id,
-5249                    space_id,
-5250                    space,
-5251                    is_multipath_negotiated,
-5252                    buf,
-5253                    &mut self.stats,
-5254                    qlog,
-5255                );
-5256            }
-5257        }
-5258
-5259        // ACK_FREQUENCY
-5260        if !path_exclusive_only && mem::replace(&mut space.pending.ack_frequency, false) {
-5261            let sequence_number = self.ack_frequency.next_sequence_number();
-5262
-5263            // Safe to unwrap because this is always provided when ACK frequency is enabled
-5264            let config = self.config.ack_frequency_config.as_ref().unwrap();
-5265
-5266            // Ensure the delay is within bounds to avoid a PROTOCOL_VIOLATION error
-5267            let max_ack_delay = self.ack_frequency.candidate_max_ack_delay(
-5268                path.rtt.get(),
-5269                config,
-5270                &self.peer_params,
-5271            );
-5272
-5273            trace!(?max_ack_delay, "ACK_FREQUENCY");
-5274
-5275            let frame = frame::AckFrequency {
-5276                sequence: sequence_number,
-5277                ack_eliciting_threshold: config.ack_eliciting_threshold,
-5278                request_max_ack_delay: max_ack_delay.as_micros().try_into().unwrap_or(VarInt::MAX),
-5279                reordering_threshold: config.reordering_threshold,
-5280            };
-5281            frame.encode(buf);
-5282            qlog.frame(&Frame::AckFrequency(frame));
-5283
-5284            sent.retransmits.get_or_create().ack_frequency = true;
-5285
-5286            self.ack_frequency
-5287                .ack_frequency_sent(path_id, pn, max_ack_delay);
-5288            self.stats.frame_tx.ack_frequency += 1;
-5289        }
-5290
-5291        // PATH_CHALLENGE
-5292        if buf.remaining_mut() > frame::PathChallenge::SIZE_BOUND
-5293            && space_id == SpaceId::Data
-5294            && path.send_new_challenge
-5295            && !self.state.is_closed()
-5296        // we don't want to send new challenges if we are already closing
-5297        {
-5298            path.send_new_challenge = false;
-5299
-5300            // Generate a new challenge every time we send a new PATH_CHALLENGE
-5301            let token = self.rng.random();
-5302            let info = paths::SentChallengeInfo {
-5303                sent_instant: now,
-5304                network_path: path.network_path,
-5305            };
-5306            path.challenges_sent.insert(token, info);
-5307            sent.non_retransmits = true;
-5308            sent.requires_padding = true;
-5309            let challenge = frame::PathChallenge(token);
-5310            trace!(frame = %challenge);
-5311            buf.write(challenge);
-5312            qlog.frame(&Frame::PathChallenge(challenge));
-5313            self.stats.frame_tx.path_challenge += 1;
-5314            let pto = self.ack_frequency.max_ack_delay_for_pto() + path.rtt.pto_base();
-5315            self.timers.set(
-5316                Timer::PerPath(path_id, PathTimer::PathChallengeLost),
-5317                now + pto,
-5318                self.qlog.with_time(now),
-5319            );
-5320
-5321            if is_multipath_negotiated && !path.validated && path.send_new_challenge {
-5322                // queue informing the path status along with the challenge
-5323                space.pending.path_status.insert(path_id);
-5324            }
-5325
-5326            // Always include an OBSERVED_ADDR frame with a PATH_CHALLENGE, regardless
-5327            // of whether one has already been sent on this path.
-5328            if space_id == SpaceId::Data
-5329                && self
-5330                    .config
-5331                    .address_discovery_role
-5332                    .should_report(&self.peer_params.address_discovery_role)
-5333            {
-5334                let frame = frame::ObservedAddr::new(
-5335                    path.network_path.remote,
-5336                    self.next_observed_addr_seq_no,
-5337                );
-5338                if buf.remaining_mut() > frame.size() {
-5339                    frame.encode(buf);
-5340                    qlog.frame(&Frame::ObservedAddr(frame));
+5032    /// Populates a packet with frames
+5033    ///
+5034    /// This tries to fit as many frames as possible into the packet.
+5035    ///
+5036    /// *path_exclusive_only* means to only build frames which can only be sent on this
+5037    /// *path.  This is used in multipath for backup paths while there is still an active
+5038    /// *path.
+5039    fn populate_packet<'a, 'b>(
+5040        &mut self,
+5041        now: Instant,
+5042        space_id: SpaceId,
+5043        path_id: PathId,
+5044        path_exclusive_only: bool,
+5045        builder: &mut PacketBuilder<'a, 'b>,
+5046    ) {
+5047        let pn = builder.exact_number;
+5048        let is_multipath_negotiated = self.is_multipath_negotiated();
+5049        let stats = &mut self.stats.frame_tx;
+5050        let space = &mut self.spaces[space_id];
+5051        let path = &mut self.paths.get_mut(&path_id).expect("known path").data;
+5052        let is_0rtt = space_id == SpaceId::Data && space.crypto.is_none();
+5053        space
+5054            .for_path(path_id)
+5055            .pending_acks
+5056            .maybe_ack_non_eliciting();
+5057
+5058        // HANDSHAKE_DONE
+5059        if !is_0rtt && mem::replace(&mut space.pending.handshake_done, false) {
+5060            builder.write_frame(frame::HandshakeDone, stats);
+5061        }
+5062
+5063        // REACH_OUT
+5064        // TODO(@divma): path explusive considerations
+5065        if let Some((round, addresses)) = space.pending.reach_out.as_mut() {
+5066            while let Some(local_addr) = addresses.pop() {
+5067                let reach_out = frame::ReachOut::new(*round, local_addr);
+5068                if builder.frame_space_remaining() > reach_out.size() {
+5069                    builder.write_frame(reach_out, stats);
+5070                } else {
+5071                    addresses.push(local_addr);
+5072                    break;
+5073                }
+5074            }
+5075            if addresses.is_empty() {
+5076                space.pending.reach_out = None;
+5077            }
+5078        }
+5079
+5080        // OBSERVED_ADDR
+5081        if !path_exclusive_only
+5082            && space_id == SpaceId::Data
+5083            && self
+5084                .config
+5085                .address_discovery_role
+5086                .should_report(&self.peer_params.address_discovery_role)
+5087            && (!path.observed_addr_sent || space.pending.observed_addr)
+5088        {
+5089            let frame =
+5090                frame::ObservedAddr::new(path.network_path.remote, self.next_observed_addr_seq_no);
+5091            if builder.frame_space_remaining() > frame.size() {
+5092                builder.write_frame(frame, stats);
+5093
+5094                self.next_observed_addr_seq_no = self.next_observed_addr_seq_no.saturating_add(1u8);
+5095                path.observed_addr_sent = true;
+5096
+5097                space.pending.observed_addr = false;
+5098            }
+5099        }
+5100
+5101        // PING
+5102        if mem::replace(&mut space.for_path(path_id).ping_pending, false) {
+5103            builder.write_frame(frame::Ping, stats);
+5104        }
+5105
+5106        // IMMEDIATE_ACK
+5107        if mem::replace(&mut space.for_path(path_id).immediate_ack_pending, false) {
+5108            debug_assert_eq!(
+5109                space_id,
+5110                SpaceId::Data,
+5111                "immediate acks must be sent in the data space"
+5112            );
+5113            builder.write_frame(frame::ImmediateAck, stats);
+5114        }
+5115
+5116        // ACK
+5117        // TODO(flub): Should this send acks for this path anyway?
+5118
+5119        if !path_exclusive_only {
+5120            for path_id in space
+5121                .number_spaces
+5122                .iter_mut()
+5123                .filter(|(_, pns)| pns.pending_acks.can_send())
+5124                .map(|(&path_id, _)| path_id)
+5125                .collect::<Vec<_>>()
+5126            {
+5127                Self::populate_acks(
+5128                    now,
+5129                    self.receiving_ecn,
+5130                    path_id,
+5131                    space_id,
+5132                    space,
+5133                    is_multipath_negotiated,
+5134                    builder,
+5135                    stats,
+5136                );
+5137            }
+5138        }
+5139
+5140        // ACK_FREQUENCY
+5141        if !path_exclusive_only && mem::replace(&mut space.pending.ack_frequency, false) {
+5142            let sequence_number = self.ack_frequency.next_sequence_number();
+5143
+5144            // Safe to unwrap because this is always provided when ACK frequency is enabled
+5145            let config = self.config.ack_frequency_config.as_ref().unwrap();
+5146
+5147            // Ensure the delay is within bounds to avoid a PROTOCOL_VIOLATION error
+5148            let max_ack_delay = self.ack_frequency.candidate_max_ack_delay(
+5149                path.rtt.get(),
+5150                config,
+5151                &self.peer_params,
+5152            );
+5153
+5154            let frame = frame::AckFrequency {
+5155                sequence: sequence_number,
+5156                ack_eliciting_threshold: config.ack_eliciting_threshold,
+5157                request_max_ack_delay: max_ack_delay.as_micros().try_into().unwrap_or(VarInt::MAX),
+5158                reordering_threshold: config.reordering_threshold,
+5159            };
+5160            builder.write_frame(frame, stats);
+5161
+5162            self.ack_frequency
+5163                .ack_frequency_sent(path_id, pn, max_ack_delay);
+5164        }
+5165
+5166        // PATH_CHALLENGE
+5167        if builder.frame_space_remaining() > frame::PathChallenge::SIZE_BOUND
+5168            && space_id == SpaceId::Data
+5169            && path.send_new_challenge
+5170            && !self.state.is_closed()
+5171        // we don't want to send new challenges if we are already closing
+5172        {
+5173            path.send_new_challenge = false;
+5174
+5175            // Generate a new challenge every time we send a new PATH_CHALLENGE
+5176            let token = self.rng.random();
+5177            let info = paths::SentChallengeInfo {
+5178                sent_instant: now,
+5179                network_path: path.network_path,
+5180            };
+5181            path.challenges_sent.insert(token, info);
+5182            let challenge = frame::PathChallenge(token);
+5183            trace!(frame = %challenge);
+5184            builder.write_frame(challenge, stats);
+5185            builder.require_padding();
+5186            let pto = self.ack_frequency.max_ack_delay_for_pto() + path.rtt.pto_base();
+5187            self.timers.set(
+5188                Timer::PerPath(path_id, PathTimer::PathChallengeLost),
+5189                now + pto,
+5190                self.qlog.with_time(now),
+5191            );
+5192
+5193            if is_multipath_negotiated && !path.validated && path.send_new_challenge {
+5194                // queue informing the path status along with the challenge
+5195                space.pending.path_status.insert(path_id);
+5196            }
+5197
+5198            // Always include an OBSERVED_ADDR frame with a PATH_CHALLENGE, regardless
+5199            // of whether one has already been sent on this path.
+5200            if space_id == SpaceId::Data
+5201                && self
+5202                    .config
+5203                    .address_discovery_role
+5204                    .should_report(&self.peer_params.address_discovery_role)
+5205            {
+5206                let frame = frame::ObservedAddr::new(
+5207                    path.network_path.remote,
+5208                    self.next_observed_addr_seq_no,
+5209                );
+5210                if builder.frame_space_remaining() > frame.size() {
+5211                    builder.write_frame(frame, stats);
+5212
+5213                    self.next_observed_addr_seq_no =
+5214                        self.next_observed_addr_seq_no.saturating_add(1u8);
+5215                    path.observed_addr_sent = true;
+5216
+5217                    space.pending.observed_addr = false;
+5218                }
+5219            }
+5220        }
+5221
+5222        // PATH_RESPONSE
+5223        if builder.frame_space_remaining() > frame::PathResponse::SIZE_BOUND
+5224            && space_id == SpaceId::Data
+5225        {
+5226            if let Some(token) = path.path_responses.pop_on_path(path.network_path) {
+5227                let response = frame::PathResponse(token);
+5228                trace!(frame = %response);
+5229                builder.write_frame(response, stats);
+5230                builder.require_padding();
+5231
+5232                // NOTE: this is technically not required but might be useful to ride the
+5233                // request/response nature of path challenges to refresh an observation
+5234                // Since PATH_RESPONSE is a probing frame, this is allowed by the spec.
+5235                if space_id == SpaceId::Data
+5236                    && self
+5237                        .config
+5238                        .address_discovery_role
+5239                        .should_report(&self.peer_params.address_discovery_role)
+5240                {
+5241                    let frame = frame::ObservedAddr::new(
+5242                        path.network_path.remote,
+5243                        self.next_observed_addr_seq_no,
+5244                    );
+5245                    if builder.frame_space_remaining() > frame.size() {
+5246                        builder.write_frame(frame, stats);
+5247
+5248                        self.next_observed_addr_seq_no =
+5249                            self.next_observed_addr_seq_no.saturating_add(1u8);
+5250                        path.observed_addr_sent = true;
+5251
+5252                        space.pending.observed_addr = false;
+5253                    }
+5254                }
+5255            }
+5256        }
+5257
+5258        // CRYPTO
+5259        while !path_exclusive_only
+5260            && builder.frame_space_remaining() > frame::Crypto::SIZE_BOUND
+5261            && !is_0rtt
+5262        {
+5263            let mut frame = match space.pending.crypto.pop_front() {
+5264                Some(x) => x,
+5265                None => break,
+5266            };
+5267
+5268            // Calculate the maximum amount of crypto data we can store in the buffer.
+5269            // Since the offset is known, we can reserve the exact size required to encode it.
+5270            // For length we reserve 2bytes which allows to encode up to 2^14,
+5271            // which is more than what fits into normally sized QUIC frames.
+5272            let max_crypto_data_size = builder.frame_space_remaining()
+5273                - 1 // Frame Type
+5274                - VarInt::size(unsafe { VarInt::from_u64_unchecked(frame.offset) })
+5275                - 2; // Maximum encoded length for frame size, given we send less than 2^14 bytes
+5276
+5277            let len = frame
+5278                .data
+5279                .len()
+5280                .min(2usize.pow(14) - 1)
+5281                .min(max_crypto_data_size);
+5282
+5283            let data = frame.data.split_to(len);
+5284            let offset = frame.offset;
+5285            let truncated = frame::Crypto { offset, data };
+5286            builder.write_frame(truncated, stats);
+5287
+5288            if !frame.data.is_empty() {
+5289                frame.offset += len as u64;
+5290                space.pending.crypto.push_front(frame);
+5291            }
+5292        }
+5293
+5294        // TODO(flub): maybe this is much higher priority?
+5295        // PATH_ABANDON
+5296        while !path_exclusive_only
+5297            && space_id == SpaceId::Data
+5298            && frame::PathAbandon::SIZE_BOUND <= builder.frame_space_remaining()
+5299        {
+5300            let Some((path_id, error_code)) = space.pending.path_abandon.pop_first() else {
+5301                break;
+5302            };
+5303            let frame = frame::PathAbandon {
+5304                path_id,
+5305                error_code,
+5306            };
+5307            builder.write_frame(frame, stats);
+5308        }
+5309
+5310        // PATH_STATUS_AVAILABLE & PATH_STATUS_BACKUP
+5311        while !path_exclusive_only
+5312            && space_id == SpaceId::Data
+5313            && frame::PathStatusAvailable::SIZE_BOUND <= builder.frame_space_remaining()
+5314        {
+5315            let Some(path_id) = space.pending.path_status.pop_first() else {
+5316                break;
+5317            };
+5318            let Some(path) = self.paths.get(&path_id).map(|path_state| &path_state.data) else {
+5319                trace!(%path_id, "discarding queued path status for unknown path");
+5320                continue;
+5321            };
+5322
+5323            let seq = path.status.seq();
+5324            match path.local_status() {
+5325                PathStatus::Available => {
+5326                    let frame = frame::PathStatusAvailable {
+5327                        path_id,
+5328                        status_seq_no: seq,
+5329                    };
+5330                    builder.write_frame(frame, stats);
+5331                }
+5332                PathStatus::Backup => {
+5333                    let frame = frame::PathStatusBackup {
+5334                        path_id,
+5335                        status_seq_no: seq,
+5336                    };
+5337                    builder.write_frame(frame, stats);
+5338                }
+5339            }
+5340        }
 5341
-5342                    self.next_observed_addr_seq_no =
-5343                        self.next_observed_addr_seq_no.saturating_add(1u8);
-5344                    path.observed_addr_sent = true;
-5345
-5346                    self.stats.frame_tx.observed_addr += 1;
-5347                    sent.retransmits.get_or_create().observed_addr = true;
-5348                    space.pending.observed_addr = false;
-5349                }
-5350            }
-5351        }
-5352
-5353        // PATH_RESPONSE
-5354        if buf.remaining_mut() > frame::PathResponse::SIZE_BOUND && space_id == SpaceId::Data {
-5355            if let Some(token) = path.path_responses.pop_on_path(path.network_path) {
-5356                sent.non_retransmits = true;
-5357                sent.requires_padding = true;
-5358                let response = frame::PathResponse(token);
-5359                trace!(frame = %response);
-5360                buf.write(response);
-5361                qlog.frame(&Frame::PathResponse(response));
-5362                self.stats.frame_tx.path_response += 1;
-5363
-5364                // NOTE: this is technically not required but might be useful to ride the
-5365                // request/response nature of path challenges to refresh an observation
-5366                // Since PATH_RESPONSE is a probing frame, this is allowed by the spec.
-5367                if space_id == SpaceId::Data
-5368                    && self
-5369                        .config
-5370                        .address_discovery_role
-5371                        .should_report(&self.peer_params.address_discovery_role)
-5372                {
-5373                    let frame = frame::ObservedAddr::new(
-5374                        path.network_path.remote,
-5375                        self.next_observed_addr_seq_no,
-5376                    );
-5377                    if buf.remaining_mut() > frame.size() {
-5378                        frame.encode(buf);
-5379                        qlog.frame(&Frame::ObservedAddr(frame));
-5380
-5381                        self.next_observed_addr_seq_no =
-5382                            self.next_observed_addr_seq_no.saturating_add(1u8);
-5383                        path.observed_addr_sent = true;
-5384
-5385                        self.stats.frame_tx.observed_addr += 1;
-5386                        sent.retransmits.get_or_create().observed_addr = true;
-5387                        space.pending.observed_addr = false;
-5388                    }
-5389                }
-5390            }
-5391        }
-5392
-5393        // CRYPTO
-5394        while !path_exclusive_only && buf.remaining_mut() > frame::Crypto::SIZE_BOUND && !is_0rtt {
-5395            let mut frame = match space.pending.crypto.pop_front() {
-5396                Some(x) => x,
-5397                None => break,
-5398            };
-5399
-5400            // Calculate the maximum amount of crypto data we can store in the buffer.
-5401            // Since the offset is known, we can reserve the exact size required to encode it.
-5402            // For length we reserve 2bytes which allows to encode up to 2^14,
-5403            // which is more than what fits into normally sized QUIC frames.
-5404            let max_crypto_data_size = buf.remaining_mut()
-5405                - 1 // Frame Type
-5406                - VarInt::size(unsafe { VarInt::from_u64_unchecked(frame.offset) })
-5407                - 2; // Maximum encoded length for frame size, given we send less than 2^14 bytes
-5408
-5409            let len = frame
-5410                .data
-5411                .len()
-5412                .min(2usize.pow(14) - 1)
-5413                .min(max_crypto_data_size);
-5414
-5415            let data = frame.data.split_to(len);
-5416            let truncated = frame::Crypto {
-5417                offset: frame.offset,
-5418                data,
-5419            };
-5420            trace!(
-5421                "CRYPTO: off {} len {}",
-5422                truncated.offset,
-5423                truncated.data.len()
-5424            );
-5425            truncated.encode(buf);
-5426            self.stats.frame_tx.crypto += 1;
-5427
-5428            // The clone is cheap but we still cfg it out if qlog is disabled.
-5429            #[cfg(feature = "qlog")]
-5430            qlog.frame(&Frame::Crypto(truncated.clone()));
-5431            sent.retransmits.get_or_create().crypto.push_back(truncated);
-5432            if !frame.data.is_empty() {
-5433                frame.offset += len as u64;
-5434                space.pending.crypto.push_front(frame);
-5435            }
-5436        }
-5437
-5438        // TODO(flub): maybe this is much higher priority?
-5439        // PATH_ABANDON
-5440        while !path_exclusive_only
-5441            && space_id == SpaceId::Data
-5442            && frame::PathAbandon::SIZE_BOUND <= buf.remaining_mut()
-5443        {
-5444            let Some((path_id, error_code)) = space.pending.path_abandon.pop_first() else {
-5445                break;
-5446            };
-5447            let frame = frame::PathAbandon {
-5448                path_id,
-5449                error_code,
-5450            };
-5451            frame.encode(buf);
-5452            qlog.frame(&Frame::PathAbandon(frame));
-5453            self.stats.frame_tx.path_abandon += 1;
-5454            trace!(%path_id, "PATH_ABANDON");
-5455            sent.retransmits
-5456                .get_or_create()
-5457                .path_abandon
-5458                .entry(path_id)
-5459                .or_insert(error_code);
-5460        }
+5342        // MAX_PATH_ID
+5343        if space_id == SpaceId::Data
+5344            && space.pending.max_path_id
+5345            && frame::MaxPathId::SIZE_BOUND <= builder.frame_space_remaining()
+5346        {
+5347            let frame = frame::MaxPathId(self.local_max_path_id);
+5348            builder.write_frame(frame, stats);
+5349            space.pending.max_path_id = false;
+5350        }
+5351
+5352        // PATHS_BLOCKED
+5353        if space_id == SpaceId::Data
+5354            && space.pending.paths_blocked
+5355            && frame::PathsBlocked::SIZE_BOUND <= builder.frame_space_remaining()
+5356        {
+5357            let frame = frame::PathsBlocked(self.remote_max_path_id);
+5358            builder.write_frame(frame, stats);
+5359            space.pending.paths_blocked = false;
+5360        }
+5361
+5362        // PATH_CIDS_BLOCKED
+5363        while space_id == SpaceId::Data
+5364            && frame::PathCidsBlocked::SIZE_BOUND <= builder.frame_space_remaining()
+5365        {
+5366            let Some(path_id) = space.pending.path_cids_blocked.pop_first() else {
+5367                break;
+5368            };
+5369            let next_seq = match self.rem_cids.get(&path_id) {
+5370                Some(cid_queue) => VarInt(cid_queue.active_seq() + 1),
+5371                None => VarInt(0),
+5372            };
+5373            let frame = frame::PathCidsBlocked { path_id, next_seq };
+5374            builder.write_frame(frame, stats);
+5375        }
+5376
+5377        // RESET_STREAM, STOP_SENDING, MAX_DATA, MAX_STREAM_DATA, MAX_STREAMS
+5378        if space_id == SpaceId::Data {
+5379            self.streams
+5380                .write_control_frames(builder, &mut space.pending, stats);
+5381        }
+5382
+5383        // NEW_CONNECTION_ID
+5384        let cid_len = self
+5385            .local_cid_state
+5386            .values()
+5387            .map(|cid_state| cid_state.cid_len())
+5388            .max()
+5389            .expect("some local CID state must exist");
+5390        let new_cid_size_bound =
+5391            frame::NewConnectionId::size_bound(is_multipath_negotiated, cid_len);
+5392        while !path_exclusive_only && builder.frame_space_remaining() > new_cid_size_bound {
+5393            let issued = match space.pending.new_cids.pop() {
+5394                Some(x) => x,
+5395                None => break,
+5396            };
+5397            let retire_prior_to = self
+5398                .local_cid_state
+5399                .get(&issued.path_id)
+5400                .map(|cid_state| cid_state.retire_prior_to())
+5401                .unwrap_or_else(|| panic!("missing local CID state for path={}", issued.path_id));
+5402
+5403            let cid_path_id = match is_multipath_negotiated {
+5404                true => Some(issued.path_id),
+5405                false => {
+5406                    debug_assert_eq!(issued.path_id, PathId::ZERO);
+5407                    None
+5408                }
+5409            };
+5410            let frame = frame::NewConnectionId {
+5411                path_id: cid_path_id,
+5412                sequence: issued.sequence,
+5413                retire_prior_to,
+5414                id: issued.id,
+5415                reset_token: issued.reset_token,
+5416            };
+5417            builder.write_frame(frame, stats);
+5418        }
+5419
+5420        // RETIRE_CONNECTION_ID
+5421        let retire_cid_bound = frame::RetireConnectionId::size_bound(is_multipath_negotiated);
+5422        while !path_exclusive_only && builder.frame_space_remaining() > retire_cid_bound {
+5423            let (path_id, sequence) = match space.pending.retire_cids.pop() {
+5424                Some((PathId::ZERO, seq)) if !is_multipath_negotiated => (None, seq),
+5425                Some((path_id, seq)) => (Some(path_id), seq),
+5426                None => break,
+5427            };
+5428            let frame = frame::RetireConnectionId { path_id, sequence };
+5429            builder.write_frame(frame, stats);
+5430        }
+5431
+5432        // DATAGRAM
+5433        let mut sent_datagrams = false;
+5434        while !path_exclusive_only
+5435            && builder.frame_space_remaining() > Datagram::SIZE_BOUND
+5436            && space_id == SpaceId::Data
+5437        {
+5438            match self.datagrams.write(builder, stats) {
+5439                true => {
+5440                    sent_datagrams = true;
+5441                }
+5442                false => break,
+5443            }
+5444        }
+5445        if self.datagrams.send_blocked && sent_datagrams {
+5446            self.events.push_back(Event::DatagramsUnblocked);
+5447            self.datagrams.send_blocked = false;
+5448        }
+5449
+5450        let path = &mut self.paths.get_mut(&path_id).expect("known path").data;
+5451
+5452        // NEW_TOKEN
+5453        while let Some(network_path) = space.pending.new_tokens.pop() {
+5454            if path_exclusive_only {
+5455                break;
+5456            }
+5457            debug_assert_eq!(space_id, SpaceId::Data);
+5458            let ConnectionSide::Server { server_config } = &self.side else {
+5459                panic!("NEW_TOKEN frames should not be enqueued by clients");
+5460            };
 5461
-5462        // PATH_STATUS_AVAILABLE & PATH_STATUS_BACKUP
-5463        while !path_exclusive_only
-5464            && space_id == SpaceId::Data
-5465            && frame::PathStatusAvailable::SIZE_BOUND <= buf.remaining_mut()
-5466        {
-5467            let Some(path_id) = space.pending.path_status.pop_first() else {
-5468                break;
-5469            };
-5470            let Some(path) = self.paths.get(&path_id).map(|path_state| &path_state.data) else {
-5471                trace!(%path_id, "discarding queued path status for unknown path");
-5472                continue;
-5473            };
-5474
-5475            let seq = path.status.seq();
-5476            sent.retransmits.get_or_create().path_status.insert(path_id);
-5477            match path.local_status() {
-5478                PathStatus::Available => {
-5479                    let frame = frame::PathStatusAvailable {
-5480                        path_id,
-5481                        status_seq_no: seq,
-5482                    };
-5483                    frame.encode(buf);
-5484                    qlog.frame(&Frame::PathStatusAvailable(frame));
-5485                    self.stats.frame_tx.path_status_available += 1;
-5486                    trace!(%path_id, %seq, "PATH_STATUS_AVAILABLE")
-5487                }
-5488                PathStatus::Backup => {
-5489                    let frame = frame::PathStatusBackup {
-5490                        path_id,
-5491                        status_seq_no: seq,
-5492                    };
-5493                    frame.encode(buf);
-5494                    qlog.frame(&Frame::PathStatusBackup(frame));
-5495                    self.stats.frame_tx.path_status_backup += 1;
-5496                    trace!(%path_id, %seq, "PATH_STATUS_BACKUP")
-5497                }
-5498            }
-5499        }
-5500
-5501        // MAX_PATH_ID
-5502        if space_id == SpaceId::Data
-5503            && space.pending.max_path_id
-5504            && frame::MaxPathId::SIZE_BOUND <= buf.remaining_mut()
-5505        {
-5506            let frame = frame::MaxPathId(self.local_max_path_id);
-5507            frame.encode(buf);
-5508            qlog.frame(&Frame::MaxPathId(frame));
-5509            space.pending.max_path_id = false;
-5510            sent.retransmits.get_or_create().max_path_id = true;
-5511            trace!(val = %self.local_max_path_id, "MAX_PATH_ID");
-5512            self.stats.frame_tx.max_path_id += 1;
-5513        }
-5514
-5515        // PATHS_BLOCKED
-5516        if space_id == SpaceId::Data
-5517            && space.pending.paths_blocked
-5518            && frame::PathsBlocked::SIZE_BOUND <= buf.remaining_mut()
-5519        {
-5520            let frame = frame::PathsBlocked(self.remote_max_path_id);
-5521            frame.encode(buf);
-5522            qlog.frame(&Frame::PathsBlocked(frame));
-5523            space.pending.paths_blocked = false;
-5524            sent.retransmits.get_or_create().paths_blocked = true;
-5525            trace!(max_path_id = %self.remote_max_path_id, "PATHS_BLOCKED");
-5526            self.stats.frame_tx.paths_blocked += 1;
-5527        }
-5528
-5529        // PATH_CIDS_BLOCKED
-5530        while space_id == SpaceId::Data && frame::PathCidsBlocked::SIZE_BOUND <= buf.remaining_mut()
-5531        {
-5532            let Some(path_id) = space.pending.path_cids_blocked.pop_first() else {
-5533                break;
-5534            };
-5535            let next_seq = match self.rem_cids.get(&path_id) {
-5536                Some(cid_queue) => cid_queue.active_seq() + 1,
-5537                None => 0,
-5538            };
-5539            let frame = frame::PathCidsBlocked {
-5540                path_id,
-5541                next_seq: VarInt(next_seq),
-5542            };
-5543            frame.encode(buf);
-5544            qlog.frame(&Frame::PathCidsBlocked(frame));
-5545            sent.retransmits
-5546                .get_or_create()
-5547                .path_cids_blocked
-5548                .insert(path_id);
-5549            trace!(%path_id, next_seq, "PATH_CIDS_BLOCKED");
-5550            self.stats.frame_tx.path_cids_blocked += 1;
-5551        }
-5552
-5553        // RESET_STREAM, STOP_SENDING, MAX_DATA, MAX_STREAM_DATA, MAX_STREAMS
-5554        if space_id == SpaceId::Data {
-5555            self.streams.write_control_frames(
-5556                buf,
-5557                &mut space.pending,
-5558                &mut sent.retransmits,
-5559                &mut self.stats.frame_tx,
-5560                qlog,
-5561            );
-5562        }
-5563
-5564        // NEW_CONNECTION_ID
-5565        let cid_len = self
-5566            .local_cid_state
-5567            .values()
-5568            .map(|cid_state| cid_state.cid_len())
-5569            .max()
-5570            .expect("some local CID state must exist");
-5571        let new_cid_size_bound =
-5572            frame::NewConnectionId::size_bound(is_multipath_negotiated, cid_len);
-5573        while !path_exclusive_only && buf.remaining_mut() > new_cid_size_bound {
-5574            let issued = match space.pending.new_cids.pop() {
-5575                Some(x) => x,
-5576                None => break,
-5577            };
-5578            let retire_prior_to = self
-5579                .local_cid_state
-5580                .get(&issued.path_id)
-5581                .map(|cid_state| cid_state.retire_prior_to())
-5582                .unwrap_or_else(|| panic!("missing local CID state for path={}", issued.path_id));
-5583
-5584            let cid_path_id = match is_multipath_negotiated {
-5585                true => {
-5586                    trace!(
-5587                        path_id = ?issued.path_id,
-5588                        sequence = issued.sequence,
-5589                        id = %issued.id,
-5590                        "PATH_NEW_CONNECTION_ID",
-5591                    );
-5592                    self.stats.frame_tx.path_new_connection_id += 1;
-5593                    Some(issued.path_id)
-5594                }
-5595                false => {
-5596                    trace!(
-5597                        sequence = issued.sequence,
-5598                        id = %issued.id,
-5599                        "NEW_CONNECTION_ID"
-5600                    );
-5601                    debug_assert_eq!(issued.path_id, PathId::ZERO);
-5602                    self.stats.frame_tx.new_connection_id += 1;
-5603                    None
-5604                }
-5605            };
-5606            let frame = frame::NewConnectionId {
-5607                path_id: cid_path_id,
-5608                sequence: issued.sequence,
-5609                retire_prior_to,
-5610                id: issued.id,
-5611                reset_token: issued.reset_token,
-5612            };
-5613            frame.encode(buf);
-5614            sent.retransmits.get_or_create().new_cids.push(issued);
-5615            qlog.frame(&Frame::NewConnectionId(frame));
-5616        }
-5617
-5618        // RETIRE_CONNECTION_ID
-5619        let retire_cid_bound = frame::RetireConnectionId::size_bound(is_multipath_negotiated);
-5620        while !path_exclusive_only && buf.remaining_mut() > retire_cid_bound {
-5621            let (path_id, sequence) = match space.pending.retire_cids.pop() {
-5622                Some((PathId::ZERO, seq)) if !is_multipath_negotiated => {
-5623                    trace!(sequence = seq, "RETIRE_CONNECTION_ID");
-5624                    self.stats.frame_tx.retire_connection_id += 1;
-5625                    (None, seq)
-5626                }
-5627                Some((path_id, seq)) => {
-5628                    trace!(%path_id, sequence = seq, "PATH_RETIRE_CONNECTION_ID");
-5629                    self.stats.frame_tx.path_retire_connection_id += 1;
-5630                    (Some(path_id), seq)
-5631                }
-5632                None => break,
-5633            };
-5634            let frame = frame::RetireConnectionId { path_id, sequence };
-5635            frame.encode(buf);
-5636            qlog.frame(&Frame::RetireConnectionId(frame));
-5637            sent.retransmits
-5638                .get_or_create()
-5639                .retire_cids
-5640                .push((path_id.unwrap_or_default(), sequence));
-5641        }
-5642
-5643        // DATAGRAM
-5644        let mut sent_datagrams = false;
-5645        while !path_exclusive_only
-5646            && buf.remaining_mut() > Datagram::SIZE_BOUND
-5647            && space_id == SpaceId::Data
-5648        {
-5649            let prev_remaining = buf.remaining_mut();
-5650            match self.datagrams.write(buf) {
-5651                true => {
-5652                    sent_datagrams = true;
-5653                    sent.non_retransmits = true;
-5654                    self.stats.frame_tx.datagram += 1;
-5655                    qlog.frame_datagram((prev_remaining - buf.remaining_mut()) as u64);
-5656                }
-5657                false => break,
-5658            }
-5659        }
-5660        if self.datagrams.send_blocked && sent_datagrams {
-5661            self.events.push_back(Event::DatagramsUnblocked);
-5662            self.datagrams.send_blocked = false;
-5663        }
-5664
-5665        let path = &mut self.paths.get_mut(&path_id).expect("known path").data;
-5666
-5667        // NEW_TOKEN
-5668        while let Some(network_path) = space.pending.new_tokens.pop() {
-5669            if path_exclusive_only {
-5670                break;
-5671            }
-5672            debug_assert_eq!(space_id, SpaceId::Data);
-5673            let ConnectionSide::Server { server_config } = &self.side else {
-5674                panic!("NEW_TOKEN frames should not be enqueued by clients");
-5675            };
-5676
-5677            if !network_path.is_probably_same_path(&path.network_path) {
-5678                // NEW_TOKEN frames contain tokens bound to a client's IP address, and are only
-5679                // useful if used from the same IP address.  Thus, we abandon enqueued NEW_TOKEN
-5680                // frames upon an path change. Instead, when the new path becomes validated,
-5681                // NEW_TOKEN frames may be enqueued for the new path instead.
-5682                continue;
-5683            }
-5684
-5685            let token = Token::new(
-5686                TokenPayload::Validation {
-5687                    ip: network_path.remote.ip(),
-5688                    issued: server_config.time_source.now(),
-5689                },
-5690                &mut self.rng,
-5691            );
-5692            let new_token = NewToken {
-5693                token: token.encode(&*server_config.token_key).into(),
-5694            };
+5462            if !network_path.is_probably_same_path(&path.network_path) {
+5463                // NEW_TOKEN frames contain tokens bound to a client's IP address, and are only
+5464                // useful if used from the same IP address.  Thus, we abandon enqueued NEW_TOKEN
+5465                // frames upon an path change. Instead, when the new path becomes validated,
+5466                // NEW_TOKEN frames may be enqueued for the new path instead.
+5467                continue;
+5468            }
+5469
+5470            let token = Token::new(
+5471                TokenPayload::Validation {
+5472                    ip: network_path.remote.ip(),
+5473                    issued: server_config.time_source.now(),
+5474                },
+5475                &mut self.rng,
+5476            );
+5477            let new_token = NewToken {
+5478                token: token.encode(&*server_config.token_key).into(),
+5479            };
+5480
+5481            if builder.frame_space_remaining() < new_token.size() {
+5482                space.pending.new_tokens.push(network_path);
+5483                break;
+5484            }
+5485
+5486            builder.write_frame(new_token, stats);
+5487            builder.retransmits_mut().new_tokens.push(network_path);
+5488        }
+5489
+5490        // STREAM
+5491        if !path_exclusive_only && space_id == SpaceId::Data {
+5492            self.streams
+5493                .write_stream_frames(builder, self.config.send_fairness, stats);
+5494        }
+5495
+5496        // ADD_ADDRESS
+5497        // TODO(@divma): check if we need to do path exclusive filters
+5498        while space_id == SpaceId::Data
+5499            && frame::AddAddress::SIZE_BOUND <= builder.frame_space_remaining()
+5500        {
+5501            if let Some(added_address) = space.pending.add_address.pop_last() {
+5502                builder.write_frame(added_address, stats);
+5503            } else {
+5504                break;
+5505            }
+5506        }
+5507
+5508        // REMOVE_ADDRESS
+5509        while space_id == SpaceId::Data
+5510            && frame::RemoveAddress::SIZE_BOUND <= builder.frame_space_remaining()
+5511        {
+5512            if let Some(removed_address) = space.pending.remove_address.pop_last() {
+5513                builder.write_frame(removed_address, stats);
+5514            } else {
+5515                break;
+5516            }
+5517        }
+5518    }
+5519
+5520    /// Write pending ACKs into a buffer
+5521    fn populate_acks<'a, 'b>(
+5522        now: Instant,
+5523        receiving_ecn: bool,
+5524        path_id: PathId,
+5525        space_id: SpaceId,
+5526        space: &mut PacketSpace,
+5527        is_multipath_negotiated: bool,
+5528        builder: &mut PacketBuilder<'a, 'b>,
+5529        stats: &mut FrameStats,
+5530    ) {
+5531        // 0-RTT packets must never carry acks (which would have to be of handshake packets)
+5532        debug_assert!(space.crypto.is_some(), "tried to send ACK in 0-RTT");
+5533
+5534        debug_assert!(
+5535            is_multipath_negotiated || path_id == PathId::ZERO,
+5536            "Only PathId::ZERO allowed without multipath (have {path_id:?})"
+5537        );
+5538        if is_multipath_negotiated {
+5539            debug_assert!(
+5540                space_id == SpaceId::Data || path_id == PathId::ZERO,
+5541                "path acks must be sent in 1RTT space (have {space_id:?})"
+5542            );
+5543        }
+5544
+5545        let pns = space.for_path(path_id);
+5546        let ranges = pns.pending_acks.ranges();
+5547        debug_assert!(!ranges.is_empty(), "can not send empty ACK range");
+5548        let ecn = if receiving_ecn {
+5549            Some(&pns.ecn_counters)
+5550        } else {
+5551            None
+5552        };
+5553
+5554        let delay_micros = pns.pending_acks.ack_delay(now).as_micros() as u64;
+5555        // TODO: This should come from `TransportConfig` if that gets configurable.
+5556        let ack_delay_exp = TransportParameters::default().ack_delay_exponent;
+5557        let delay = delay_micros >> ack_delay_exp.into_inner();
+5558
+5559        if is_multipath_negotiated && space_id == SpaceId::Data {
+5560            if !ranges.is_empty() {
+5561                let frame = frame::PathAck::encoder(path_id, delay, ranges, ecn);
+5562                builder.write_frame(frame, stats);
+5563            }
+5564        } else {
+5565            builder.write_frame(frame::Ack::encoder(delay, ranges, ecn), stats);
+5566        }
+5567    }
+5568
+5569    fn close_common(&mut self) {
+5570        trace!("connection closed");
+5571        self.timers.reset();
+5572    }
+5573
+5574    fn set_close_timer(&mut self, now: Instant) {
+5575        // QUIC-MULTIPATH § 2.6 Connection Closure: draining for 3*PTO with PTO the max of
+5576        // the PTO for all paths.
+5577        let pto_max = self.pto_max_path(self.highest_space, true);
+5578        self.timers.set(
+5579            Timer::Conn(ConnTimer::Close),
+5580            now + 3 * pto_max,
+5581            self.qlog.with_time(now),
+5582        );
+5583    }
+5584
+5585    /// Handle transport parameters received from the peer
+5586    ///
+5587    /// *rem_cid* and *loc_cid* are the source and destination CIDs respectively of the
+5588    /// *packet into which the transport parameters arrived.
+5589    fn handle_peer_params(
+5590        &mut self,
+5591        params: TransportParameters,
+5592        loc_cid: ConnectionId,
+5593        rem_cid: ConnectionId,
+5594        now: Instant,
+5595    ) -> Result<(), TransportError> {
+5596        if Some(self.orig_rem_cid) != params.initial_src_cid
+5597            || (self.side.is_client()
+5598                && (Some(self.initial_dst_cid) != params.original_dst_cid
+5599                    || self.retry_src_cid != params.retry_src_cid))
+5600        {
+5601            return Err(TransportError::TRANSPORT_PARAMETER_ERROR(
+5602                "CID authentication failure",
+5603            ));
+5604        }
+5605        if params.initial_max_path_id.is_some() && (loc_cid.is_empty() || rem_cid.is_empty()) {
+5606            return Err(TransportError::PROTOCOL_VIOLATION(
+5607                "multipath must not use zero-length CIDs",
+5608            ));
+5609        }
+5610
+5611        self.set_peer_params(params);
+5612        self.qlog.emit_peer_transport_params_received(self, now);
+5613
+5614        Ok(())
+5615    }
+5616
+5617    fn set_peer_params(&mut self, params: TransportParameters) {
+5618        self.streams.set_params(&params);
+5619        self.idle_timeout =
+5620            negotiate_max_idle_timeout(self.config.max_idle_timeout, Some(params.max_idle_timeout));
+5621        trace!("negotiated max idle timeout {:?}", self.idle_timeout);
+5622
+5623        if let Some(ref info) = params.preferred_address {
+5624            // During the handshake PathId::ZERO exists.
+5625            self.rem_cids.get_mut(&PathId::ZERO).expect("not yet abandoned").insert(frame::NewConnectionId {
+5626                path_id: None,
+5627                sequence: 1,
+5628                id: info.connection_id,
+5629                reset_token: info.stateless_reset_token,
+5630                retire_prior_to: 0,
+5631            })
+5632            .expect(
+5633                "preferred address CID is the first received, and hence is guaranteed to be legal",
+5634            );
+5635            let remote = self.path_data(PathId::ZERO).network_path.remote;
+5636            self.set_reset_token(PathId::ZERO, remote, info.stateless_reset_token);
+5637        }
+5638        self.ack_frequency.peer_max_ack_delay = get_max_ack_delay(&params);
+5639
+5640        let mut multipath_enabled = None;
+5641        if let (Some(local_max_path_id), Some(remote_max_path_id)) = (
+5642            self.config.get_initial_max_path_id(),
+5643            params.initial_max_path_id,
+5644        ) {
+5645            // multipath is enabled, register the local and remote maximums
+5646            self.local_max_path_id = local_max_path_id;
+5647            self.remote_max_path_id = remote_max_path_id;
+5648            let initial_max_path_id = local_max_path_id.min(remote_max_path_id);
+5649            debug!(%initial_max_path_id, "multipath negotiated");
+5650            multipath_enabled = Some(initial_max_path_id);
+5651        }
+5652
+5653        if let Some((max_locally_allowed_remote_addresses, max_remotely_allowed_remote_addresses)) =
+5654            self.config
+5655                .max_remote_nat_traversal_addresses
+5656                .zip(params.max_remote_nat_traversal_addresses)
+5657        {
+5658            if let Some(max_initial_paths) =
+5659                multipath_enabled.map(|path_id| path_id.saturating_add(1u8))
+5660            {
+5661                let max_local_addresses = max_remotely_allowed_remote_addresses.get();
+5662                let max_remote_addresses = max_locally_allowed_remote_addresses.get();
+5663                self.iroh_hp =
+5664                    iroh_hp::State::new(max_remote_addresses, max_local_addresses, self.side());
+5665                debug!(
+5666                    %max_remote_addresses, %max_local_addresses,
+5667                    "iroh hole punching negotiated"
+5668                );
+5669
+5670                match self.side() {
+5671                    Side::Client => {
+5672                        if max_initial_paths.as_u32() < max_remote_addresses as u32 + 1 {
+5673                            // in this case the client might try to open `max_remote_addresses` new
+5674                            // paths, but the current multipath configuration will not allow it
+5675                            warn!(%max_initial_paths, %max_remote_addresses, "local client configuration might cause nat traversal issues")
+5676                        } else if max_local_addresses as u64
+5677                            > params.active_connection_id_limit.into_inner()
+5678                        {
+5679                            // the server allows us to send at most `params.active_connection_id_limit`
+5680                            // but they might need at least `max_local_addresses` to effectively send
+5681                            // `PATH_CHALLENGE` frames to each advertised local address
+5682                            warn!(%max_local_addresses, remote_cid_limit=%params.active_connection_id_limit.into_inner(), "remote server configuration might cause nat traversal issues")
+5683                        }
+5684                    }
+5685                    Side::Server => {
+5686                        if (max_initial_paths.as_u32() as u64) < crate::LOC_CID_COUNT {
+5687                            warn!(%max_initial_paths, local_cid_limit=%crate::LOC_CID_COUNT, "local server configuration might cause nat traversal issues")
+5688                        }
+5689                    }
+5690                }
+5691            } else {
+5692                debug!("iroh nat traversal enabled for both endpoints, but multipath is missing")
+5693            }
+5694        }
 5695
-5696            if buf.remaining_mut() < new_token.size() {
-5697                space.pending.new_tokens.push(network_path);
-5698                break;
-5699            }
-5700
-5701            trace!("NEW_TOKEN");
-5702            new_token.encode(buf);
-5703            qlog.frame(&Frame::NewToken(new_token));
-5704            sent.retransmits
-5705                .get_or_create()
-5706                .new_tokens
-5707                .push(network_path);
-5708            self.stats.frame_tx.new_token += 1;
-5709        }
-5710
-5711        // STREAM
-5712        if !path_exclusive_only && space_id == SpaceId::Data {
-5713            sent.stream_frames =
-5714                self.streams
-5715                    .write_stream_frames(buf, self.config.send_fairness, qlog);
-5716            self.stats.frame_tx.stream += sent.stream_frames.len() as u64;
-5717        }
-5718
-5719        // ADD_ADDRESS
-5720        // TODO(@divma): check if we need to do path exclusive filters
-5721        while space_id == SpaceId::Data && frame::AddAddress::SIZE_BOUND <= buf.remaining_mut() {
-5722            if let Some(added_address) = space.pending.add_address.pop_last() {
-5723                trace!(
-5724                    seq = %added_address.seq_no,
-5725                    ip = ?added_address.ip,
-5726                    port = added_address.port,
-5727                    "ADD_ADDRESS",
-5728                );
-5729                added_address.encode(buf);
-5730                sent.retransmits
-5731                    .get_or_create()
-5732                    .add_address
-5733                    .insert(added_address);
-5734                self.stats.frame_tx.add_address = self.stats.frame_tx.add_address.saturating_add(1);
-5735                qlog.frame(&Frame::AddAddress(added_address));
-5736            } else {
-5737                break;
-5738            }
-5739        }
-5740
-5741        // REMOVE_ADDRESS
-5742        while space_id == SpaceId::Data && frame::RemoveAddress::SIZE_BOUND <= buf.remaining_mut() {
-5743            if let Some(removed_address) = space.pending.remove_address.pop_last() {
-5744                trace!(seq = %removed_address.seq_no, "REMOVE_ADDRESS");
-5745                removed_address.encode(buf);
-5746                sent.retransmits
-5747                    .get_or_create()
-5748                    .remove_address
-5749                    .insert(removed_address);
-5750                self.stats.frame_tx.remove_address =
-5751                    self.stats.frame_tx.remove_address.saturating_add(1);
-5752                qlog.frame(&Frame::RemoveAddress(removed_address));
-5753            } else {
-5754                break;
-5755            }
-5756        }
-5757
-5758        sent
-5759    }
-5760
-5761    /// Write pending ACKs into a buffer
-5762    fn populate_acks(
-5763        now: Instant,
-5764        receiving_ecn: bool,
-5765        sent: &mut SentFrames,
-5766        path_id: PathId,
-5767        space_id: SpaceId,
-5768        space: &mut PacketSpace,
-5769        is_multipath_negotiated: bool,
-5770        buf: &mut impl BufMut,
-5771        stats: &mut ConnectionStats,
-5772        #[allow(unused)] qlog: &mut QlogSentPacket,
-5773    ) {
-5774        // 0-RTT packets must never carry acks (which would have to be of handshake packets)
-5775        debug_assert!(space.crypto.is_some(), "tried to send ACK in 0-RTT");
-5776
-5777        debug_assert!(
-5778            is_multipath_negotiated || path_id == PathId::ZERO,
-5779            "Only PathId::ZERO allowed without multipath (have {path_id:?})"
-5780        );
-5781        if is_multipath_negotiated {
-5782            debug_assert!(
-5783                space_id == SpaceId::Data || path_id == PathId::ZERO,
-5784                "path acks must be sent in 1RTT space (have {space_id:?})"
-5785            );
-5786        }
-5787
-5788        let pns = space.for_path(path_id);
-5789        let ranges = pns.pending_acks.ranges();
-5790        debug_assert!(!ranges.is_empty(), "can not send empty ACK range");
-5791        let ecn = if receiving_ecn {
-5792            Some(&pns.ecn_counters)
-5793        } else {
-5794            None
-5795        };
-5796        if let Some(max) = ranges.max() {
-5797            sent.largest_acked.insert(path_id, max);
-5798        }
-5799
-5800        let delay_micros = pns.pending_acks.ack_delay(now).as_micros() as u64;
-5801        // TODO: This should come from `TransportConfig` if that gets configurable.
-5802        let ack_delay_exp = TransportParameters::default().ack_delay_exponent;
-5803        let delay = delay_micros >> ack_delay_exp.into_inner();
-5804
-5805        if is_multipath_negotiated && space_id == SpaceId::Data {
-5806            if !ranges.is_empty() {
-5807                trace!("PATH_ACK {path_id:?} {ranges:?}, Delay = {delay_micros}us");
-5808                frame::PathAck::encoder(path_id, delay as _, ranges, ecn).encode(buf);
-5809                qlog.frame_path_ack(path_id, delay as _, ranges, ecn);
-5810                stats.frame_tx.path_acks += 1;
-5811            }
-5812        } else {
-5813            trace!("ACK {ranges:?}, Delay = {delay_micros}us");
-5814            frame::Ack::encoder(delay as _, ranges, ecn).encode(buf);
-5815            stats.frame_tx.acks += 1;
-5816            qlog.frame_ack(delay, ranges, ecn);
-5817        }
-5818    }
-5819
-5820    fn close_common(&mut self) {
-5821        trace!("connection closed");
-5822        self.timers.reset();
-5823    }
-5824
-5825    fn set_close_timer(&mut self, now: Instant) {
-5826        // QUIC-MULTIPATH § 2.6 Connection Closure: draining for 3*PTO with PTO the max of
-5827        // the PTO for all paths.
-5828        let pto_max = self.pto_max_path(self.highest_space, true);
-5829        self.timers.set(
-5830            Timer::Conn(ConnTimer::Close),
-5831            now + 3 * pto_max,
-5832            self.qlog.with_time(now),
-5833        );
-5834    }
-5835
-5836    /// Handle transport parameters received from the peer
-5837    ///
-5838    /// *rem_cid* and *loc_cid* are the source and destination CIDs respectively of the
-5839    /// *packet into which the transport parameters arrived.
-5840    fn handle_peer_params(
-5841        &mut self,
-5842        params: TransportParameters,
-5843        loc_cid: ConnectionId,
-5844        rem_cid: ConnectionId,
-5845        now: Instant,
-5846    ) -> Result<(), TransportError> {
-5847        if Some(self.orig_rem_cid) != params.initial_src_cid
-5848            || (self.side.is_client()
-5849                && (Some(self.initial_dst_cid) != params.original_dst_cid
-5850                    || self.retry_src_cid != params.retry_src_cid))
-5851        {
-5852            return Err(TransportError::TRANSPORT_PARAMETER_ERROR(
-5853                "CID authentication failure",
-5854            ));
-5855        }
-5856        if params.initial_max_path_id.is_some() && (loc_cid.is_empty() || rem_cid.is_empty()) {
-5857            return Err(TransportError::PROTOCOL_VIOLATION(
-5858                "multipath must not use zero-length CIDs",
-5859            ));
-5860        }
-5861
-5862        self.set_peer_params(params);
-5863        self.qlog.emit_peer_transport_params_received(self, now);
-5864
-5865        Ok(())
+5696        self.peer_params = params;
+5697        let peer_max_udp_payload_size =
+5698            u16::try_from(self.peer_params.max_udp_payload_size.into_inner()).unwrap_or(u16::MAX);
+5699        self.path_data_mut(PathId::ZERO)
+5700            .mtud
+5701            .on_peer_max_udp_payload_size_received(peer_max_udp_payload_size);
+5702    }
+5703
+5704    /// Decrypts a packet, returning the packet number on success
+5705    fn decrypt_packet(
+5706        &mut self,
+5707        now: Instant,
+5708        path_id: PathId,
+5709        packet: &mut Packet,
+5710    ) -> Result<Option<u64>, Option<TransportError>> {
+5711        let result = packet_crypto::decrypt_packet_body(
+5712            packet,
+5713            path_id,
+5714            &self.spaces,
+5715            self.zero_rtt_crypto.as_ref(),
+5716            self.key_phase,
+5717            self.prev_crypto.as_ref(),
+5718            self.next_crypto.as_ref(),
+5719        )?;
+5720
+5721        let result = match result {
+5722            Some(r) => r,
+5723            None => return Ok(None),
+5724        };
+5725
+5726        if result.outgoing_key_update_acked {
+5727            if let Some(prev) = self.prev_crypto.as_mut() {
+5728                prev.end_packet = Some((result.number, now));
+5729                self.set_key_discard_timer(now, packet.header.space());
+5730            }
+5731        }
+5732
+5733        if result.incoming_key_update {
+5734            trace!("key update authenticated");
+5735            self.update_keys(Some((result.number, now)), true);
+5736            self.set_key_discard_timer(now, packet.header.space());
+5737        }
+5738
+5739        Ok(Some(result.number))
+5740    }
+5741
+5742    fn update_keys(&mut self, end_packet: Option<(u64, Instant)>, remote: bool) {
+5743        trace!("executing key update");
+5744        // Generate keys for the key phase after the one we're switching to, store them in
+5745        // `next_crypto`, make the contents of `next_crypto` current, and move the current keys into
+5746        // `prev_crypto`.
+5747        let new = self
+5748            .crypto
+5749            .next_1rtt_keys()
+5750            .expect("only called for `Data` packets");
+5751        self.key_phase_size = new
+5752            .local
+5753            .confidentiality_limit()
+5754            .saturating_sub(KEY_UPDATE_MARGIN);
+5755        let old = mem::replace(
+5756            &mut self.spaces[SpaceId::Data]
+5757                .crypto
+5758                .as_mut()
+5759                .unwrap() // safe because update_keys() can only be triggered by short packets
+5760                .packet,
+5761            mem::replace(self.next_crypto.as_mut().unwrap(), new),
+5762        );
+5763        self.spaces[SpaceId::Data]
+5764            .iter_paths_mut()
+5765            .for_each(|s| s.sent_with_keys = 0);
+5766        self.prev_crypto = Some(PrevCrypto {
+5767            crypto: old,
+5768            end_packet,
+5769            update_unacked: remote,
+5770        });
+5771        self.key_phase = !self.key_phase;
+5772    }
+5773
+5774    fn peer_supports_ack_frequency(&self) -> bool {
+5775        self.peer_params.min_ack_delay.is_some()
+5776    }
+5777
+5778    /// Send an IMMEDIATE_ACK frame to the remote endpoint
+5779    ///
+5780    /// According to the spec, this will result in an error if the remote endpoint does not support
+5781    /// the Acknowledgement Frequency extension
+5782    pub(crate) fn immediate_ack(&mut self, path_id: PathId) {
+5783        debug_assert_eq!(
+5784            self.highest_space,
+5785            SpaceId::Data,
+5786            "immediate ack must be written in the data space"
+5787        );
+5788        self.spaces[self.highest_space]
+5789            .for_path(path_id)
+5790            .immediate_ack_pending = true;
+5791    }
+5792
+5793    /// Decodes a packet, returning its decrypted payload, so it can be inspected in tests
+5794    #[cfg(test)]
+5795    pub(crate) fn decode_packet(&self, event: &ConnectionEvent) -> Option<Vec<u8>> {
+5796        let (path_id, first_decode, remaining) = match &event.0 {
+5797            ConnectionEventInner::Datagram(DatagramConnectionEvent {
+5798                path_id,
+5799                first_decode,
+5800                remaining,
+5801                ..
+5802            }) => (path_id, first_decode, remaining),
+5803            _ => return None,
+5804        };
+5805
+5806        if remaining.is_some() {
+5807            panic!("Packets should never be coalesced in tests");
+5808        }
+5809
+5810        let decrypted_header = packet_crypto::unprotect_header(
+5811            first_decode.clone(),
+5812            &self.spaces,
+5813            self.zero_rtt_crypto.as_ref(),
+5814            self.peer_params.stateless_reset_token,
+5815        )?;
+5816
+5817        let mut packet = decrypted_header.packet?;
+5818        packet_crypto::decrypt_packet_body(
+5819            &mut packet,
+5820            *path_id,
+5821            &self.spaces,
+5822            self.zero_rtt_crypto.as_ref(),
+5823            self.key_phase,
+5824            self.prev_crypto.as_ref(),
+5825            self.next_crypto.as_ref(),
+5826        )
+5827        .ok()?;
+5828
+5829        Some(packet.payload.to_vec())
+5830    }
+5831
+5832    /// The number of bytes of packets containing retransmittable frames that have not been
+5833    /// acknowledged or declared lost.
+5834    #[cfg(test)]
+5835    pub(crate) fn bytes_in_flight(&self) -> u64 {
+5836        // TODO(@divma): consider including for multipath?
+5837        self.path_data(PathId::ZERO).in_flight.bytes
+5838    }
+5839
+5840    /// Number of bytes worth of non-ack-only packets that may be sent
+5841    #[cfg(test)]
+5842    pub(crate) fn congestion_window(&self) -> u64 {
+5843        let path = self.path_data(PathId::ZERO);
+5844        path.congestion
+5845            .window()
+5846            .saturating_sub(path.in_flight.bytes)
+5847    }
+5848
+5849    /// Whether no timers but keepalive, idle, rtt, pushnewcid, and key discard are running
+5850    #[cfg(test)]
+5851    pub(crate) fn is_idle(&self) -> bool {
+5852        let current_timers = self.timers.values();
+5853        current_timers
+5854            .into_iter()
+5855            .filter(|(timer, _)| {
+5856                !matches!(
+5857                    timer,
+5858                    Timer::Conn(ConnTimer::KeepAlive)
+5859                        | Timer::PerPath(_, PathTimer::PathKeepAlive)
+5860                        | Timer::Conn(ConnTimer::PushNewCid)
+5861                        | Timer::Conn(ConnTimer::KeyDiscard)
+5862                )
+5863            })
+5864            .min_by_key(|(_, time)| *time)
+5865            .is_none_or(|(timer, _)| timer == Timer::Conn(ConnTimer::Idle))
 5866    }
 5867
-5868    fn set_peer_params(&mut self, params: TransportParameters) {
-5869        self.streams.set_params(&params);
-5870        self.idle_timeout =
-5871            negotiate_max_idle_timeout(self.config.max_idle_timeout, Some(params.max_idle_timeout));
-5872        trace!("negotiated max idle timeout {:?}", self.idle_timeout);
+5868    /// Whether explicit congestion notification is in use on outgoing packets.
+5869    #[cfg(test)]
+5870    pub(crate) fn using_ecn(&self) -> bool {
+5871        self.path_data(PathId::ZERO).sending_ecn
+5872    }
 5873
-5874        if let Some(ref info) = params.preferred_address {
-5875            // During the handshake PathId::ZERO exists.
-5876            self.rem_cids.get_mut(&PathId::ZERO).expect("not yet abandoned").insert(frame::NewConnectionId {
-5877                path_id: None,
-5878                sequence: 1,
-5879                id: info.connection_id,
-5880                reset_token: info.stateless_reset_token,
-5881                retire_prior_to: 0,
-5882            })
-5883            .expect(
-5884                "preferred address CID is the first received, and hence is guaranteed to be legal",
-5885            );
-5886            let remote = self.path_data(PathId::ZERO).network_path.remote;
-5887            self.set_reset_token(PathId::ZERO, remote, info.stateless_reset_token);
-5888        }
-5889        self.ack_frequency.peer_max_ack_delay = get_max_ack_delay(&params);
-5890
-5891        let mut multipath_enabled = None;
-5892        if let (Some(local_max_path_id), Some(remote_max_path_id)) = (
-5893            self.config.get_initial_max_path_id(),
-5894            params.initial_max_path_id,
-5895        ) {
-5896            // multipath is enabled, register the local and remote maximums
-5897            self.local_max_path_id = local_max_path_id;
-5898            self.remote_max_path_id = remote_max_path_id;
-5899            let initial_max_path_id = local_max_path_id.min(remote_max_path_id);
-5900            debug!(%initial_max_path_id, "multipath negotiated");
-5901            multipath_enabled = Some(initial_max_path_id);
-5902        }
-5903
-5904        if let Some((max_locally_allowed_remote_addresses, max_remotely_allowed_remote_addresses)) =
-5905            self.config
-5906                .max_remote_nat_traversal_addresses
-5907                .zip(params.max_remote_nat_traversal_addresses)
-5908        {
-5909            if let Some(max_initial_paths) =
-5910                multipath_enabled.map(|path_id| path_id.saturating_add(1u8))
-5911            {
-5912                let max_local_addresses = max_remotely_allowed_remote_addresses.get();
-5913                let max_remote_addresses = max_locally_allowed_remote_addresses.get();
-5914                self.iroh_hp =
-5915                    iroh_hp::State::new(max_remote_addresses, max_local_addresses, self.side());
-5916                debug!(
-5917                    %max_remote_addresses, %max_local_addresses,
-5918                    "iroh hole punching negotiated"
-5919                );
-5920
-5921                match self.side() {
-5922                    Side::Client => {
-5923                        if max_initial_paths.as_u32() < max_remote_addresses as u32 + 1 {
-5924                            // in this case the client might try to open `max_remote_addresses` new
-5925                            // paths, but the current multipath configuration will not allow it
-5926                            warn!(%max_initial_paths, %max_remote_addresses, "local client configuration might cause nat traversal issues")
-5927                        } else if max_local_addresses as u64
-5928                            > params.active_connection_id_limit.into_inner()
-5929                        {
-5930                            // the server allows us to send at most `params.active_connection_id_limit`
-5931                            // but they might need at least `max_local_addresses` to effectively send
-5932                            // `PATH_CHALLENGE` frames to each advertised local address
-5933                            warn!(%max_local_addresses, remote_cid_limit=%params.active_connection_id_limit.into_inner(), "remote server configuration might cause nat traversal issues")
-5934                        }
-5935                    }
-5936                    Side::Server => {
-5937                        if (max_initial_paths.as_u32() as u64) < crate::LOC_CID_COUNT {
-5938                            warn!(%max_initial_paths, local_cid_limit=%crate::LOC_CID_COUNT, "local server configuration might cause nat traversal issues")
-5939                        }
-5940                    }
-5941                }
-5942            } else {
-5943                debug!("iroh nat traversal enabled for both endpoints, but multipath is missing")
-5944            }
-5945        }
-5946
-5947        self.peer_params = params;
-5948        let peer_max_udp_payload_size =
-5949            u16::try_from(self.peer_params.max_udp_payload_size.into_inner()).unwrap_or(u16::MAX);
-5950        self.path_data_mut(PathId::ZERO)
-5951            .mtud
-5952            .on_peer_max_udp_payload_size_received(peer_max_udp_payload_size);
-5953    }
-5954
-5955    /// Decrypts a packet, returning the packet number on success
-5956    fn decrypt_packet(
-5957        &mut self,
-5958        now: Instant,
-5959        path_id: PathId,
-5960        packet: &mut Packet,
-5961    ) -> Result<Option<u64>, Option<TransportError>> {
-5962        let result = packet_crypto::decrypt_packet_body(
-5963            packet,
-5964            path_id,
-5965            &self.spaces,
-5966            self.zero_rtt_crypto.as_ref(),
-5967            self.key_phase,
-5968            self.prev_crypto.as_ref(),
-5969            self.next_crypto.as_ref(),
-5970        )?;
-5971
-5972        let result = match result {
-5973            Some(r) => r,
-5974            None => return Ok(None),
-5975        };
-5976
-5977        if result.outgoing_key_update_acked {
-5978            if let Some(prev) = self.prev_crypto.as_mut() {
-5979                prev.end_packet = Some((result.number, now));
-5980                self.set_key_discard_timer(now, packet.header.space());
-5981            }
-5982        }
-5983
-5984        if result.incoming_key_update {
-5985            trace!("key update authenticated");
-5986            self.update_keys(Some((result.number, now)), true);
-5987            self.set_key_discard_timer(now, packet.header.space());
-5988        }
-5989
-5990        Ok(Some(result.number))
-5991    }
-5992
-5993    fn update_keys(&mut self, end_packet: Option<(u64, Instant)>, remote: bool) {
-5994        trace!("executing key update");
-5995        // Generate keys for the key phase after the one we're switching to, store them in
-5996        // `next_crypto`, make the contents of `next_crypto` current, and move the current keys into
-5997        // `prev_crypto`.
-5998        let new = self
-5999            .crypto
-6000            .next_1rtt_keys()
-6001            .expect("only called for `Data` packets");
-6002        self.key_phase_size = new
-6003            .local
-6004            .confidentiality_limit()
-6005            .saturating_sub(KEY_UPDATE_MARGIN);
-6006        let old = mem::replace(
-6007            &mut self.spaces[SpaceId::Data]
-6008                .crypto
-6009                .as_mut()
-6010                .unwrap() // safe because update_keys() can only be triggered by short packets
-6011                .packet,
-6012            mem::replace(self.next_crypto.as_mut().unwrap(), new),
-6013        );
-6014        self.spaces[SpaceId::Data]
-6015            .iter_paths_mut()
-6016            .for_each(|s| s.sent_with_keys = 0);
-6017        self.prev_crypto = Some(PrevCrypto {
-6018            crypto: old,
-6019            end_packet,
-6020            update_unacked: remote,
-6021        });
-6022        self.key_phase = !self.key_phase;
+5874    /// The number of received bytes in the current path
+5875    #[cfg(test)]
+5876    pub(crate) fn total_recvd(&self) -> u64 {
+5877        self.path_data(PathId::ZERO).total_recvd
+5878    }
+5879
+5880    #[cfg(test)]
+5881    pub(crate) fn active_local_cid_seq(&self) -> (u64, u64) {
+5882        self.local_cid_state
+5883            .get(&PathId::ZERO)
+5884            .unwrap()
+5885            .active_seq()
+5886    }
+5887
+5888    #[cfg(test)]
+5889    #[track_caller]
+5890    pub(crate) fn active_local_path_cid_seq(&self, path_id: u32) -> (u64, u64) {
+5891        self.local_cid_state
+5892            .get(&PathId(path_id))
+5893            .unwrap()
+5894            .active_seq()
+5895    }
+5896
+5897    /// Instruct the peer to replace previously issued CIDs by sending a NEW_CONNECTION_ID frame
+5898    /// with updated `retire_prior_to` field set to `v`
+5899    #[cfg(test)]
+5900    pub(crate) fn rotate_local_cid(&mut self, v: u64, now: Instant) {
+5901        let n = self
+5902            .local_cid_state
+5903            .get_mut(&PathId::ZERO)
+5904            .unwrap()
+5905            .assign_retire_seq(v);
+5906        self.endpoint_events
+5907            .push_back(EndpointEventInner::NeedIdentifiers(PathId::ZERO, now, n));
+5908    }
+5909
+5910    /// Check the current active remote CID sequence for `PathId::ZERO`
+5911    #[cfg(test)]
+5912    pub(crate) fn active_rem_cid_seq(&self) -> u64 {
+5913        self.rem_cids.get(&PathId::ZERO).unwrap().active_seq()
+5914    }
+5915
+5916    /// Returns the detected maximum udp payload size for the current path
+5917    #[cfg(test)]
+5918    pub(crate) fn path_mtu(&self, path_id: PathId) -> u16 {
+5919        self.path_data(path_id).current_mtu()
+5920    }
+5921
+5922    /// Triggers path validation on all paths
+5923    #[cfg(test)]
+5924    pub(crate) fn trigger_path_validation(&mut self) {
+5925        for path in self.paths.values_mut() {
+5926            path.data.send_new_challenge = true;
+5927        }
+5928    }
+5929
+5930    /// Whether we have 1-RTT data to send
+5931    ///
+5932    /// This checks for frames that can only be sent in the data space (1-RTT):
+5933    /// - Pending PATH_CHALLENGE frames on the active and previous path if just migrated.
+5934    /// - Pending PATH_RESPONSE frames.
+5935    /// - Pending data to send in STREAM frames.
+5936    /// - Pending DATAGRAM frames to send.
+5937    ///
+5938    /// See also [`PacketSpace::can_send`] which keeps track of all other frame types that
+5939    /// may need to be sent.
+5940    fn can_send_1rtt(&self, path_id: PathId, max_size: usize) -> SendableFrames {
+5941        let path_exclusive = self.paths.get(&path_id).is_some_and(|path| {
+5942            path.data.send_new_challenge
+5943                || path
+5944                    .prev
+5945                    .as_ref()
+5946                    .is_some_and(|(_, path)| path.send_new_challenge)
+5947                || !path.data.path_responses.is_empty()
+5948        });
+5949        let other = self.streams.can_send_stream_data()
+5950            || self
+5951                .datagrams
+5952                .outgoing
+5953                .front()
+5954                .is_some_and(|x| x.size(true) <= max_size);
+5955        SendableFrames {
+5956            acks: false,
+5957            other,
+5958            close: false,
+5959            path_exclusive,
+5960        }
+5961    }
+5962
+5963    /// Terminate the connection instantly, without sending a close packet
+5964    fn kill(&mut self, reason: ConnectionError) {
+5965        self.close_common();
+5966        self.state.move_to_drained(Some(reason));
+5967        self.endpoint_events.push_back(EndpointEventInner::Drained);
+5968    }
+5969
+5970    /// Storage size required for the largest packet that can be transmitted on all currently
+5971    /// available paths
+5972    ///
+5973    /// Buffers passed to [`Connection::poll_transmit`] should be at least this large.
+5974    ///
+5975    /// When multipath is enabled, this value is the minimum MTU across all available paths.
+5976    pub fn current_mtu(&self) -> u16 {
+5977        self.paths
+5978            .iter()
+5979            .filter(|&(path_id, _path_state)| !self.abandoned_paths.contains(path_id))
+5980            .map(|(_path_id, path_state)| path_state.data.current_mtu())
+5981            .min()
+5982            .expect("There is always at least one available path")
+5983    }
+5984
+5985    /// Size of non-frame data for a 1-RTT packet
+5986    ///
+5987    /// Quantifies space consumed by the QUIC header and AEAD tag. All other bytes in a packet are
+5988    /// frames. Changes if the length of the remote connection ID changes, which is expected to be
+5989    /// rare. If `pn` is specified, may additionally change unpredictably due to variations in
+5990    /// latency and packet loss.
+5991    fn predict_1rtt_overhead(&mut self, pn: u64, path: PathId) -> usize {
+5992        let pn_len = PacketNumber::new(
+5993            pn,
+5994            self.spaces[SpaceId::Data]
+5995                .for_path(path)
+5996                .largest_acked_packet
+5997                .unwrap_or(0),
+5998        )
+5999        .len();
+6000
+6001        // 1 byte for flags
+6002        1 + self
+6003            .rem_cids
+6004            .get(&path)
+6005            .map(|cids| cids.active().len())
+6006            .unwrap_or(20)      // Max CID len in QUIC v1
+6007            + pn_len
+6008            + self.tag_len_1rtt()
+6009    }
+6010
+6011    fn predict_1rtt_overhead_no_pn(&self) -> usize {
+6012        let pn_len = 4;
+6013
+6014        let cid_len = self
+6015            .rem_cids
+6016            .values()
+6017            .map(|cids| cids.active().len())
+6018            .max()
+6019            .unwrap_or(20); // Max CID len in QUIC v1
+6020
+6021        // 1 byte for flags
+6022        1 + cid_len + pn_len + self.tag_len_1rtt()
 6023    }
 6024
-6025    fn peer_supports_ack_frequency(&self) -> bool {
-6026        self.peer_params.min_ack_delay.is_some()
-6027    }
-6028
-6029    /// Send an IMMEDIATE_ACK frame to the remote endpoint
-6030    ///
-6031    /// According to the spec, this will result in an error if the remote endpoint does not support
-6032    /// the Acknowledgement Frequency extension
-6033    pub(crate) fn immediate_ack(&mut self, path_id: PathId) {
-6034        debug_assert_eq!(
-6035            self.highest_space,
-6036            SpaceId::Data,
-6037            "immediate ack must be written in the data space"
-6038        );
-6039        self.spaces[self.highest_space]
-6040            .for_path(path_id)
-6041            .immediate_ack_pending = true;
-6042    }
-6043
-6044    /// Decodes a packet, returning its decrypted payload, so it can be inspected in tests
-6045    #[cfg(test)]
-6046    pub(crate) fn decode_packet(&self, event: &ConnectionEvent) -> Option<Vec<u8>> {
-6047        let (path_id, first_decode, remaining) = match &event.0 {
-6048            ConnectionEventInner::Datagram(DatagramConnectionEvent {
-6049                path_id,
-6050                first_decode,
-6051                remaining,
-6052                ..
-6053            }) => (path_id, first_decode, remaining),
-6054            _ => return None,
-6055        };
-6056
-6057        if remaining.is_some() {
-6058            panic!("Packets should never be coalesced in tests");
-6059        }
-6060
-6061        let decrypted_header = packet_crypto::unprotect_header(
-6062            first_decode.clone(),
-6063            &self.spaces,
-6064            self.zero_rtt_crypto.as_ref(),
-6065            self.peer_params.stateless_reset_token,
-6066        )?;
-6067
-6068        let mut packet = decrypted_header.packet?;
-6069        packet_crypto::decrypt_packet_body(
-6070            &mut packet,
-6071            *path_id,
-6072            &self.spaces,
-6073            self.zero_rtt_crypto.as_ref(),
-6074            self.key_phase,
-6075            self.prev_crypto.as_ref(),
-6076            self.next_crypto.as_ref(),
-6077        )
-6078        .ok()?;
-6079
-6080        Some(packet.payload.to_vec())
-6081    }
-6082
-6083    /// The number of bytes of packets containing retransmittable frames that have not been
-6084    /// acknowledged or declared lost.
-6085    #[cfg(test)]
-6086    pub(crate) fn bytes_in_flight(&self) -> u64 {
-6087        // TODO(@divma): consider including for multipath?
-6088        self.path_data(PathId::ZERO).in_flight.bytes
-6089    }
-6090
-6091    /// Number of bytes worth of non-ack-only packets that may be sent
-6092    #[cfg(test)]
-6093    pub(crate) fn congestion_window(&self) -> u64 {
-6094        let path = self.path_data(PathId::ZERO);
-6095        path.congestion
-6096            .window()
-6097            .saturating_sub(path.in_flight.bytes)
-6098    }
-6099
-6100    /// Whether no timers but keepalive, idle, rtt, pushnewcid, and key discard are running
-6101    #[cfg(test)]
-6102    pub(crate) fn is_idle(&self) -> bool {
-6103        let current_timers = self.timers.values();
-6104        current_timers
-6105            .into_iter()
-6106            .filter(|(timer, _)| {
-6107                !matches!(
-6108                    timer,
-6109                    Timer::Conn(ConnTimer::KeepAlive)
-6110                        | Timer::PerPath(_, PathTimer::PathKeepAlive)
-6111                        | Timer::Conn(ConnTimer::PushNewCid)
-6112                        | Timer::Conn(ConnTimer::KeyDiscard)
-6113                )
-6114            })
-6115            .min_by_key(|(_, time)| *time)
-6116            .is_none_or(|(timer, _)| timer == Timer::Conn(ConnTimer::Idle))
+6025    fn tag_len_1rtt(&self) -> usize {
+6026        let key = match self.spaces[SpaceId::Data].crypto.as_ref() {
+6027            Some(crypto) => Some(&*crypto.packet.local),
+6028            None => self.zero_rtt_crypto.as_ref().map(|x| &*x.packet),
+6029        };
+6030        // If neither Data nor 0-RTT keys are available, make a reasonable tag length guess. As of
+6031        // this writing, all QUIC cipher suites use 16-byte tags. We could return `None` instead,
+6032        // but that would needlessly prevent sending datagrams during 0-RTT.
+6033        key.map_or(16, |x| x.tag_len())
+6034    }
+6035
+6036    /// Mark the path as validated, and enqueue NEW_TOKEN frames to be sent as appropriate
+6037    fn on_path_validated(&mut self, path_id: PathId) {
+6038        self.path_data_mut(path_id).validated = true;
+6039        let ConnectionSide::Server { server_config } = &self.side else {
+6040            return;
+6041        };
+6042        let network_path = self.path_data(path_id).network_path;
+6043        let new_tokens = &mut self.spaces[SpaceId::Data as usize].pending.new_tokens;
+6044        new_tokens.clear();
+6045        for _ in 0..server_config.validation_token.sent {
+6046            new_tokens.push(network_path);
+6047        }
+6048    }
+6049
+6050    /// Handle new path status information: PATH_STATUS_AVAILABLE, PATH_STATUS_BACKUP
+6051    fn on_path_status(&mut self, path_id: PathId, status: PathStatus, status_seq_no: VarInt) {
+6052        if let Some(path) = self.paths.get_mut(&path_id) {
+6053            path.data.status.remote_update(status, status_seq_no);
+6054        } else {
+6055            debug!("PATH_STATUS_AVAILABLE received unknown path {:?}", path_id);
+6056        }
+6057        self.events.push_back(
+6058            PathEvent::RemoteStatus {
+6059                id: path_id,
+6060                status,
+6061            }
+6062            .into(),
+6063        );
+6064    }
+6065
+6066    /// Returns the maximum [`PathId`] to be used for sending in this connection.
+6067    ///
+6068    /// This is calculated as minimum between the local and remote's maximums when multipath is
+6069    /// enabled, or `None` when disabled.
+6070    ///
+6071    /// For data that's received, we should use [`Self::local_max_path_id`] instead.
+6072    /// The reasoning is that the remote might already have updated to its own newer
+6073    /// [`Self::max_path_id`] after sending out a `MAX_PATH_ID` frame, but it got re-ordered.
+6074    fn max_path_id(&self) -> Option<PathId> {
+6075        if self.is_multipath_negotiated() {
+6076            Some(self.remote_max_path_id.min(self.local_max_path_id))
+6077        } else {
+6078            None
+6079        }
+6080    }
+6081
+6082    /// Add addresses the local endpoint considers are reachable for nat traversal
+6083    pub fn add_nat_traversal_address(&mut self, address: SocketAddr) -> Result<(), iroh_hp::Error> {
+6084        if let Some(added) = self.iroh_hp.add_local_address(address)? {
+6085            self.spaces[SpaceId::Data].pending.add_address.insert(added);
+6086        };
+6087        Ok(())
+6088    }
+6089
+6090    /// Removes an address the endpoing no longer considers reachable for nat traversal
+6091    ///
+6092    /// Addresses not present in the set will be silently ignored.
+6093    pub fn remove_nat_traversal_address(
+6094        &mut self,
+6095        address: SocketAddr,
+6096    ) -> Result<(), iroh_hp::Error> {
+6097        if let Some(removed) = self.iroh_hp.remove_local_address(address)? {
+6098            self.spaces[SpaceId::Data]
+6099                .pending
+6100                .remove_address
+6101                .insert(removed);
+6102        }
+6103        Ok(())
+6104    }
+6105
+6106    /// Get the current local nat traversal addresses
+6107    pub fn get_local_nat_traversal_addresses(&self) -> Result<Vec<SocketAddr>, iroh_hp::Error> {
+6108        self.iroh_hp.get_local_nat_traversal_addresses()
+6109    }
+6110
+6111    /// Get the currently advertised nat traversal addresses by the server
+6112    pub fn get_remote_nat_traversal_addresses(&self) -> Result<Vec<SocketAddr>, iroh_hp::Error> {
+6113        Ok(self
+6114            .iroh_hp
+6115            .client_side()?
+6116            .get_remote_nat_traversal_addresses())
 6117    }
 6118
-6119    /// Whether explicit congestion notification is in use on outgoing packets.
-6120    #[cfg(test)]
-6121    pub(crate) fn using_ecn(&self) -> bool {
-6122        self.path_data(PathId::ZERO).sending_ecn
-6123    }
-6124
-6125    /// The number of received bytes in the current path
-6126    #[cfg(test)]
-6127    pub(crate) fn total_recvd(&self) -> u64 {
-6128        self.path_data(PathId::ZERO).total_recvd
-6129    }
-6130
-6131    #[cfg(test)]
-6132    pub(crate) fn active_local_cid_seq(&self) -> (u64, u64) {
-6133        self.local_cid_state
-6134            .get(&PathId::ZERO)
-6135            .unwrap()
-6136            .active_seq()
-6137    }
-6138
-6139    #[cfg(test)]
-6140    #[track_caller]
-6141    pub(crate) fn active_local_path_cid_seq(&self, path_id: u32) -> (u64, u64) {
-6142        self.local_cid_state
-6143            .get(&PathId(path_id))
-6144            .unwrap()
-6145            .active_seq()
-6146    }
-6147
-6148    /// Instruct the peer to replace previously issued CIDs by sending a NEW_CONNECTION_ID frame
-6149    /// with updated `retire_prior_to` field set to `v`
-6150    #[cfg(test)]
-6151    pub(crate) fn rotate_local_cid(&mut self, v: u64, now: Instant) {
-6152        let n = self
-6153            .local_cid_state
-6154            .get_mut(&PathId::ZERO)
-6155            .unwrap()
-6156            .assign_retire_seq(v);
-6157        self.endpoint_events
-6158            .push_back(EndpointEventInner::NeedIdentifiers(PathId::ZERO, now, n));
-6159    }
-6160
-6161    /// Check the current active remote CID sequence for `PathId::ZERO`
-6162    #[cfg(test)]
-6163    pub(crate) fn active_rem_cid_seq(&self) -> u64 {
-6164        self.rem_cids.get(&PathId::ZERO).unwrap().active_seq()
-6165    }
-6166
-6167    /// Returns the detected maximum udp payload size for the current path
-6168    #[cfg(test)]
-6169    pub(crate) fn path_mtu(&self, path_id: PathId) -> u16 {
-6170        self.path_data(path_id).current_mtu()
-6171    }
-6172
-6173    /// Triggers path validation on all paths
-6174    #[cfg(test)]
-6175    pub(crate) fn trigger_path_validation(&mut self) {
-6176        for path in self.paths.values_mut() {
-6177            path.data.send_new_challenge = true;
-6178        }
-6179    }
+6119    /// Attempts to open a path for nat traversal.
+6120    ///
+6121    /// `ipv6` indicates if the path should be opened using an IPV6 remote. If the address is
+6122    /// ignored, it will return `None`.
+6123    ///
+6124    /// On success returns the [`PathId`] and remote address of the path, as well as whether the path
+6125    /// existed for the adjusted remote.
+6126    fn open_nat_traversal_path(
+6127        &mut self,
+6128        now: Instant,
+6129        (ip, port): (IpAddr, u16),
+6130        ipv6: bool,
+6131    ) -> Result<Option<(PathId, SocketAddr, bool)>, PathError> {
+6132        // If this endpoint is an IPv6 endpoint we use IPv6 addresses for all remotes.
+6133        let remote = match ip {
+6134            IpAddr::V4(addr) if ipv6 => SocketAddr::new(addr.to_ipv6_mapped().into(), port),
+6135            IpAddr::V4(addr) => SocketAddr::new(addr.into(), port),
+6136            IpAddr::V6(_) if ipv6 => SocketAddr::new(ip, port),
+6137            IpAddr::V6(_) => {
+6138                trace!("not using IPv6 nat candidate for IPv4 socket");
+6139                return Ok(None);
+6140            }
+6141        };
+6142        // TODO(matheus23): Probe the correct 4-tuple, instead of only a remote address?
+6143        // By specifying None, we do two things: 1. open_path_ensure won't generate two
+6144        // paths to the same remote and 2. we let the OS choose which interface to use for
+6145        // sending on that path.
+6146        let network_path = FourTuple {
+6147            remote,
+6148            local_ip: None,
+6149        };
+6150        match self.open_path_ensure(network_path, PathStatus::Backup, now) {
+6151            Ok((path_id, path_was_known)) => {
+6152                if path_was_known {
+6153                    trace!(%path_id, %remote, "nat traversal: path existed for remote");
+6154                }
+6155                Ok(Some((path_id, remote, path_was_known)))
+6156            }
+6157            Err(e) => {
+6158                debug!(%remote, %e, "nat traversal: failed to probe remote");
+6159                Err(e)
+6160            }
+6161        }
+6162    }
+6163
+6164    /// Initiates a new nat traversal round
+6165    ///
+6166    /// A nat traversal round involves advertising the client's local addresses in `REACH_OUT`
+6167    /// frames, and initiating probing of the known remote addresses. When a new round is
+6168    /// initiated, the previous one is cancelled, and paths that have not been opened are closed.
+6169    ///
+6170    /// Returns the server addresses that are now being probed.
+6171    /// If addresses fail due to spurious errors, these might succeed later and not be returned in
+6172    /// this set.
+6173    pub fn initiate_nat_traversal_round(
+6174        &mut self,
+6175        now: Instant,
+6176    ) -> Result<Vec<SocketAddr>, iroh_hp::Error> {
+6177        if self.state.is_closed() {
+6178            return Err(iroh_hp::Error::Closed);
+6179        }
 6180
-6181    /// Whether we have 1-RTT data to send
-6182    ///
-6183    /// This checks for frames that can only be sent in the data space (1-RTT):
-6184    /// - Pending PATH_CHALLENGE frames on the active and previous path if just migrated.
-6185    /// - Pending PATH_RESPONSE frames.
-6186    /// - Pending data to send in STREAM frames.
-6187    /// - Pending DATAGRAM frames to send.
-6188    ///
-6189    /// See also [`PacketSpace::can_send`] which keeps track of all other frame types that
-6190    /// may need to be sent.
-6191    fn can_send_1rtt(&self, path_id: PathId, max_size: usize) -> SendableFrames {
-6192        let path_exclusive = self.paths.get(&path_id).is_some_and(|path| {
-6193            path.data.send_new_challenge
-6194                || path
-6195                    .prev
-6196                    .as_ref()
-6197                    .is_some_and(|(_, path)| path.send_new_challenge)
-6198                || !path.data.path_responses.is_empty()
-6199        });
-6200        let other = self.streams.can_send_stream_data()
-6201            || self
-6202                .datagrams
-6203                .outgoing
-6204                .front()
-6205                .is_some_and(|x| x.size(true) <= max_size);
-6206        SendableFrames {
-6207            acks: false,
-6208            other,
-6209            close: false,
-6210            path_exclusive,
-6211        }
-6212    }
-6213
-6214    /// Terminate the connection instantly, without sending a close packet
-6215    fn kill(&mut self, reason: ConnectionError) {
-6216        self.close_common();
-6217        self.state.move_to_drained(Some(reason));
-6218        self.endpoint_events.push_back(EndpointEventInner::Drained);
-6219    }
-6220
-6221    /// Storage size required for the largest packet that can be transmitted on all currently
-6222    /// available paths
-6223    ///
-6224    /// Buffers passed to [`Connection::poll_transmit`] should be at least this large.
-6225    ///
-6226    /// When multipath is enabled, this value is the minimum MTU across all available paths.
-6227    pub fn current_mtu(&self) -> u16 {
-6228        self.paths
-6229            .iter()
-6230            .filter(|&(path_id, _path_state)| !self.abandoned_paths.contains(path_id))
-6231            .map(|(_path_id, path_state)| path_state.data.current_mtu())
-6232            .min()
-6233            .expect("There is always at least one available path")
-6234    }
+6181        let client_state = self.iroh_hp.client_side_mut()?;
+6182        let iroh_hp::NatTraversalRound {
+6183            new_round,
+6184            reach_out_at,
+6185            addresses_to_probe,
+6186            prev_round_path_ids,
+6187        } = client_state.initiate_nat_traversal_round()?;
+6188
+6189        self.spaces[SpaceId::Data].pending.reach_out = Some((new_round, reach_out_at));
+6190
+6191        for path_id in prev_round_path_ids {
+6192            // TODO(@divma): this sounds reasonable but we need if this actually works for the
+6193            // purposes of the protocol
+6194            let validated = self
+6195                .path(path_id)
+6196                .map(|path| path.validated)
+6197                .unwrap_or(false);
+6198
+6199            if !validated {
+6200                let _ = self.close_path(
+6201                    now,
+6202                    path_id,
+6203                    TransportErrorCode::APPLICATION_ABANDON_PATH.into(),
+6204                );
+6205            }
+6206        }
+6207
+6208        let mut err = None;
+6209
+6210        let mut path_ids = Vec::with_capacity(addresses_to_probe.len());
+6211        let mut probed_addresses = Vec::with_capacity(addresses_to_probe.len());
+6212        let ipv6 = self
+6213            .paths
+6214            .values()
+6215            .any(|p| p.data.network_path.remote.is_ipv6());
+6216
+6217        for (id, address) in addresses_to_probe {
+6218            match self.open_nat_traversal_path(now, address, ipv6) {
+6219                Ok(None) => {}
+6220                Ok(Some((path_id, remote, path_was_known))) => {
+6221                    if !path_was_known {
+6222                        path_ids.push(path_id);
+6223                        probed_addresses.push(remote);
+6224                    }
+6225                }
+6226                Err(e) => {
+6227                    self.iroh_hp
+6228                        .client_side_mut()
+6229                        .expect("validated")
+6230                        .report_in_continuation(id, e);
+6231                    err.get_or_insert(e);
+6232                }
+6233            }
+6234        }
 6235
-6236    /// Size of non-frame data for a 1-RTT packet
-6237    ///
-6238    /// Quantifies space consumed by the QUIC header and AEAD tag. All other bytes in a packet are
-6239    /// frames. Changes if the length of the remote connection ID changes, which is expected to be
-6240    /// rare. If `pn` is specified, may additionally change unpredictably due to variations in
-6241    /// latency and packet loss.
-6242    fn predict_1rtt_overhead(&mut self, pn: u64, path: PathId) -> usize {
-6243        let pn_len = PacketNumber::new(
-6244            pn,
-6245            self.spaces[SpaceId::Data]
-6246                .for_path(path)
-6247                .largest_acked_packet
-6248                .unwrap_or(0),
-6249        )
-6250        .len();
-6251
-6252        // 1 byte for flags
-6253        1 + self
-6254            .rem_cids
-6255            .get(&path)
-6256            .map(|cids| cids.active().len())
-6257            .unwrap_or(20)      // Max CID len in QUIC v1
-6258            + pn_len
-6259            + self.tag_len_1rtt()
-6260    }
-6261
-6262    fn predict_1rtt_overhead_no_pn(&self) -> usize {
-6263        let pn_len = 4;
-6264
-6265        let cid_len = self
-6266            .rem_cids
-6267            .values()
-6268            .map(|cids| cids.active().len())
-6269            .max()
-6270            .unwrap_or(20); // Max CID len in QUIC v1
-6271
-6272        // 1 byte for flags
-6273        1 + cid_len + pn_len + self.tag_len_1rtt()
-6274    }
-6275
-6276    fn tag_len_1rtt(&self) -> usize {
-6277        let key = match self.spaces[SpaceId::Data].crypto.as_ref() {
-6278            Some(crypto) => Some(&*crypto.packet.local),
-6279            None => self.zero_rtt_crypto.as_ref().map(|x| &*x.packet),
-6280        };
-6281        // If neither Data nor 0-RTT keys are available, make a reasonable tag length guess. As of
-6282        // this writing, all QUIC cipher suites use 16-byte tags. We could return `None` instead,
-6283        // but that would needlessly prevent sending datagrams during 0-RTT.
-6284        key.map_or(16, |x| x.tag_len())
+6236        if let Some(err) = err {
+6237            // We failed to probe any addresses, bail out
+6238            if probed_addresses.is_empty() {
+6239                return Err(iroh_hp::Error::Multipath(err));
+6240            }
+6241        }
+6242
+6243        self.iroh_hp
+6244            .client_side_mut()
+6245            .expect("connection side validated")
+6246            .set_round_path_ids(path_ids);
+6247
+6248        Ok(probed_addresses)
+6249    }
+6250
+6251    /// Attempts to continue a nat traversal round by trying to open paths for pending client probes.
+6252    ///
+6253    /// If there was nothing to do, it returns `None`. Otherwise it returns whether the path was
+6254    /// successfully open.
+6255    fn continue_nat_traversal_round(&mut self, now: Instant) -> Option<bool> {
+6256        let client_state = self.iroh_hp.client_side_mut().ok()?;
+6257        let (id, address) = client_state.continue_nat_traversal_round()?;
+6258        let ipv6 = self
+6259            .paths
+6260            .values()
+6261            .any(|p| p.data.network_path.remote.is_ipv6());
+6262        let open_result = self.open_nat_traversal_path(now, address, ipv6);
+6263        let client_state = self.iroh_hp.client_side_mut().expect("validated");
+6264        match open_result {
+6265            Ok(None) => Some(true),
+6266            Ok(Some((path_id, _remote, path_was_known))) => {
+6267                if !path_was_known {
+6268                    client_state.add_round_path_id(path_id);
+6269                }
+6270                Some(true)
+6271            }
+6272            Err(e) => {
+6273                client_state.report_in_continuation(id, e);
+6274                Some(false)
+6275            }
+6276        }
+6277    }
+6278}
+6279
+6280impl fmt::Debug for Connection {
+6281    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+6282        f.debug_struct("Connection")
+6283            .field("handshake_cid", &self.handshake_cid)
+6284            .finish()
 6285    }
-6286
-6287    /// Mark the path as validated, and enqueue NEW_TOKEN frames to be sent as appropriate
-6288    fn on_path_validated(&mut self, path_id: PathId) {
-6289        self.path_data_mut(path_id).validated = true;
-6290        let ConnectionSide::Server { server_config } = &self.side else {
-6291            return;
-6292        };
-6293        let network_path = self.path_data(path_id).network_path;
-6294        let new_tokens = &mut self.spaces[SpaceId::Data as usize].pending.new_tokens;
-6295        new_tokens.clear();
-6296        for _ in 0..server_config.validation_token.sent {
-6297            new_tokens.push(network_path);
-6298        }
-6299    }
-6300
-6301    /// Handle new path status information: PATH_STATUS_AVAILABLE, PATH_STATUS_BACKUP
-6302    fn on_path_status(&mut self, path_id: PathId, status: PathStatus, status_seq_no: VarInt) {
-6303        if let Some(path) = self.paths.get_mut(&path_id) {
-6304            path.data.status.remote_update(status, status_seq_no);
-6305        } else {
-6306            debug!("PATH_STATUS_AVAILABLE received unknown path {:?}", path_id);
-6307        }
-6308        self.events.push_back(
-6309            PathEvent::RemoteStatus {
-6310                id: path_id,
-6311                status,
-6312            }
-6313            .into(),
-6314        );
-6315    }
-6316
-6317    /// Returns the maximum [`PathId`] to be used for sending in this connection.
-6318    ///
-6319    /// This is calculated as minimum between the local and remote's maximums when multipath is
-6320    /// enabled, or `None` when disabled.
-6321    ///
-6322    /// For data that's received, we should use [`Self::local_max_path_id`] instead.
-6323    /// The reasoning is that the remote might already have updated to its own newer
-6324    /// [`Self::max_path_id`] after sending out a `MAX_PATH_ID` frame, but it got re-ordered.
-6325    fn max_path_id(&self) -> Option<PathId> {
-6326        if self.is_multipath_negotiated() {
-6327            Some(self.remote_max_path_id.min(self.local_max_path_id))
-6328        } else {
-6329            None
-6330        }
-6331    }
-6332
-6333    /// Add addresses the local endpoint considers are reachable for nat traversal
-6334    pub fn add_nat_traversal_address(&mut self, address: SocketAddr) -> Result<(), iroh_hp::Error> {
-6335        if let Some(added) = self.iroh_hp.add_local_address(address)? {
-6336            self.spaces[SpaceId::Data].pending.add_address.insert(added);
-6337        };
-6338        Ok(())
-6339    }
-6340
-6341    /// Removes an address the endpoing no longer considers reachable for nat traversal
-6342    ///
-6343    /// Addresses not present in the set will be silently ignored.
-6344    pub fn remove_nat_traversal_address(
-6345        &mut self,
-6346        address: SocketAddr,
-6347    ) -> Result<(), iroh_hp::Error> {
-6348        if let Some(removed) = self.iroh_hp.remove_local_address(address)? {
-6349            self.spaces[SpaceId::Data]
-6350                .pending
-6351                .remove_address
-6352                .insert(removed);
-6353        }
-6354        Ok(())
-6355    }
-6356
-6357    /// Get the current local nat traversal addresses
-6358    pub fn get_local_nat_traversal_addresses(&self) -> Result<Vec<SocketAddr>, iroh_hp::Error> {
-6359        self.iroh_hp.get_local_nat_traversal_addresses()
-6360    }
-6361
-6362    /// Get the currently advertised nat traversal addresses by the server
-6363    pub fn get_remote_nat_traversal_addresses(&self) -> Result<Vec<SocketAddr>, iroh_hp::Error> {
-6364        Ok(self
-6365            .iroh_hp
-6366            .client_side()?
-6367            .get_remote_nat_traversal_addresses())
-6368    }
-6369
-6370    /// Attempts to open a path for nat traversal.
-6371    ///
-6372    /// `ipv6` indicates if the path should be opened using an IPV6 remote. If the address is
-6373    /// ignored, it will return `None`.
-6374    ///
-6375    /// On success returns the [`PathId`] and remote address of the path, as well as whether the path
-6376    /// existed for the adjusted remote.
-6377    fn open_nat_traversal_path(
-6378        &mut self,
-6379        now: Instant,
-6380        (ip, port): (IpAddr, u16),
-6381        ipv6: bool,
-6382    ) -> Result<Option<(PathId, SocketAddr, bool)>, PathError> {
-6383        // If this endpoint is an IPv6 endpoint we use IPv6 addresses for all remotes.
-6384        let remote = match ip {
-6385            IpAddr::V4(addr) if ipv6 => SocketAddr::new(addr.to_ipv6_mapped().into(), port),
-6386            IpAddr::V4(addr) => SocketAddr::new(addr.into(), port),
-6387            IpAddr::V6(_) if ipv6 => SocketAddr::new(ip, port),
-6388            IpAddr::V6(_) => {
-6389                trace!("not using IPv6 nat candidate for IPv4 socket");
-6390                return Ok(None);
-6391            }
-6392        };
-6393        // TODO(matheus23): Probe the correct 4-tuple, instead of only a remote address?
-6394        // By specifying None, we do two things: 1. open_path_ensure won't generate two
-6395        // paths to the same remote and 2. we let the OS choose which interface to use for
-6396        // sending on that path.
-6397        let network_path = FourTuple {
-6398            remote,
-6399            local_ip: None,
-6400        };
-6401        match self.open_path_ensure(network_path, PathStatus::Backup, now) {
-6402            Ok((path_id, path_was_known)) => {
-6403                if path_was_known {
-6404                    trace!(%path_id, %remote, "nat traversal: path existed for remote");
-6405                }
-6406                Ok(Some((path_id, remote, path_was_known)))
-6407            }
-6408            Err(e) => {
-6409                debug!(%remote, %e, "nat traversal: failed to probe remote");
-6410                Err(e)
-6411            }
-6412        }
-6413    }
-6414
-6415    /// Initiates a new nat traversal round
-6416    ///
-6417    /// A nat traversal round involves advertising the client's local addresses in `REACH_OUT`
-6418    /// frames, and initiating probing of the known remote addresses. When a new round is
-6419    /// initiated, the previous one is cancelled, and paths that have not been opened are closed.
-6420    ///
-6421    /// Returns the server addresses that are now being probed.
-6422    /// If addresses fail due to spurious errors, these might succeed later and not be returned in
-6423    /// this set.
-6424    pub fn initiate_nat_traversal_round(
-6425        &mut self,
-6426        now: Instant,
-6427    ) -> Result<Vec<SocketAddr>, iroh_hp::Error> {
-6428        if self.state.is_closed() {
-6429            return Err(iroh_hp::Error::Closed);
-6430        }
-6431
-6432        let client_state = self.iroh_hp.client_side_mut()?;
-6433        let iroh_hp::NatTraversalRound {
-6434            new_round,
-6435            reach_out_at,
-6436            addresses_to_probe,
-6437            prev_round_path_ids,
-6438        } = client_state.initiate_nat_traversal_round()?;
-6439
-6440        self.spaces[SpaceId::Data].pending.reach_out = Some((new_round, reach_out_at));
-6441
-6442        for path_id in prev_round_path_ids {
-6443            // TODO(@divma): this sounds reasonable but we need if this actually works for the
-6444            // purposes of the protocol
-6445            let validated = self
-6446                .path(path_id)
-6447                .map(|path| path.validated)
-6448                .unwrap_or(false);
-6449
-6450            if !validated {
-6451                let _ = self.close_path(
-6452                    now,
-6453                    path_id,
-6454                    TransportErrorCode::APPLICATION_ABANDON_PATH.into(),
-6455                );
-6456            }
-6457        }
-6458
-6459        let mut err = None;
-6460
-6461        let mut path_ids = Vec::with_capacity(addresses_to_probe.len());
-6462        let mut probed_addresses = Vec::with_capacity(addresses_to_probe.len());
-6463        let ipv6 = self
-6464            .paths
-6465            .values()
-6466            .any(|p| p.data.network_path.remote.is_ipv6());
-6467
-6468        for (id, address) in addresses_to_probe {
-6469            match self.open_nat_traversal_path(now, address, ipv6) {
-6470                Ok(None) => {}
-6471                Ok(Some((path_id, remote, path_was_known))) => {
-6472                    if !path_was_known {
-6473                        path_ids.push(path_id);
-6474                        probed_addresses.push(remote);
-6475                    }
-6476                }
-6477                Err(e) => {
-6478                    self.iroh_hp
-6479                        .client_side_mut()
-6480                        .expect("validated")
-6481                        .report_in_continuation(id, e);
-6482                    err.get_or_insert(e);
-6483                }
-6484            }
-6485        }
-6486
-6487        if let Some(err) = err {
-6488            // We failed to probe any addresses, bail out
-6489            if probed_addresses.is_empty() {
-6490                return Err(iroh_hp::Error::Multipath(err));
-6491            }
-6492        }
-6493
-6494        self.iroh_hp
-6495            .client_side_mut()
-6496            .expect("connection side validated")
-6497            .set_round_path_ids(path_ids);
-6498
-6499        Ok(probed_addresses)
-6500    }
-6501
-6502    /// Attempts to continue a nat traversal round by trying to open paths for pending client probes.
-6503    ///
-6504    /// If there was nothing to do, it returns `None`. Otherwise it returns whether the path was
-6505    /// successfully open.
-6506    fn continue_nat_traversal_round(&mut self, now: Instant) -> Option<bool> {
-6507        let client_state = self.iroh_hp.client_side_mut().ok()?;
-6508        let (id, address) = client_state.continue_nat_traversal_round()?;
-6509        let ipv6 = self
-6510            .paths
-6511            .values()
-6512            .any(|p| p.data.network_path.remote.is_ipv6());
-6513        let open_result = self.open_nat_traversal_path(now, address, ipv6);
-6514        let client_state = self.iroh_hp.client_side_mut().expect("validated");
-6515        match open_result {
-6516            Ok(None) => Some(true),
-6517            Ok(Some((path_id, _remote, path_was_known))) => {
-6518                if !path_was_known {
-6519                    client_state.add_round_path_id(path_id);
-6520                }
-6521                Some(true)
-6522            }
-6523            Err(e) => {
-6524                client_state.report_in_continuation(id, e);
-6525                Some(false)
-6526            }
-6527        }
+6286}
+6287
+6288#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+6289enum PathBlocked {
+6290    No,
+6291    AntiAmplification,
+6292    Congestion,
+6293    Pacing,
+6294}
+6295
+6296/// Fields of `Connection` specific to it being client-side or server-side
+6297enum ConnectionSide {
+6298    Client {
+6299        /// Sent in every outgoing Initial packet. Always empty after Initial keys are discarded
+6300        token: Bytes,
+6301        token_store: Arc<dyn TokenStore>,
+6302        server_name: String,
+6303    },
+6304    Server {
+6305        server_config: Arc<ServerConfig>,
+6306    },
+6307}
+6308
+6309impl ConnectionSide {
+6310    fn remote_may_migrate(&self, state: &State) -> bool {
+6311        match self {
+6312            Self::Server { server_config } => server_config.migration,
+6313            Self::Client { .. } => {
+6314                if let Some(hs) = state.as_handshake() {
+6315                    hs.allow_server_migration
+6316                } else {
+6317                    false
+6318                }
+6319            }
+6320        }
+6321    }
+6322
+6323    fn is_client(&self) -> bool {
+6324        self.side().is_client()
+6325    }
+6326
+6327    fn is_server(&self) -> bool {
+6328        self.side().is_server()
+6329    }
+6330
+6331    fn side(&self) -> Side {
+6332        match *self {
+6333            Self::Client { .. } => Side::Client,
+6334            Self::Server { .. } => Side::Server,
+6335        }
+6336    }
+6337}
+6338
+6339impl From<SideArgs> for ConnectionSide {
+6340    fn from(side: SideArgs) -> Self {
+6341        match side {
+6342            SideArgs::Client {
+6343                token_store,
+6344                server_name,
+6345            } => Self::Client {
+6346                token: token_store.take(&server_name).unwrap_or_default(),
+6347                token_store,
+6348                server_name,
+6349            },
+6350            SideArgs::Server {
+6351                server_config,
+6352                pref_addr_cid: _,
+6353                path_validated: _,
+6354            } => Self::Server { server_config },
+6355        }
+6356    }
+6357}
+6358
+6359/// Parameters to `Connection::new` specific to it being client-side or server-side
+6360pub(crate) enum SideArgs {
+6361    Client {
+6362        token_store: Arc<dyn TokenStore>,
+6363        server_name: String,
+6364    },
+6365    Server {
+6366        server_config: Arc<ServerConfig>,
+6367        pref_addr_cid: Option<ConnectionId>,
+6368        path_validated: bool,
+6369    },
+6370}
+6371
+6372impl SideArgs {
+6373    pub(crate) fn pref_addr_cid(&self) -> Option<ConnectionId> {
+6374        match *self {
+6375            Self::Client { .. } => None,
+6376            Self::Server { pref_addr_cid, .. } => pref_addr_cid,
+6377        }
+6378    }
+6379
+6380    pub(crate) fn path_validated(&self) -> bool {
+6381        match *self {
+6382            Self::Client { .. } => true,
+6383            Self::Server { path_validated, .. } => path_validated,
+6384        }
+6385    }
+6386
+6387    pub(crate) fn side(&self) -> Side {
+6388        match *self {
+6389            Self::Client { .. } => Side::Client,
+6390            Self::Server { .. } => Side::Server,
+6391        }
+6392    }
+6393}
+6394
+6395/// Reasons why a connection might be lost
+6396#[derive(Debug, Error, Clone, PartialEq, Eq)]
+6397pub enum ConnectionError {
+6398    /// The peer doesn't implement any supported version
+6399    #[error("peer doesn't implement any supported version")]
+6400    VersionMismatch,
+6401    /// The peer violated the QUIC specification as understood by this implementation
+6402    #[error(transparent)]
+6403    TransportError(#[from] TransportError),
+6404    /// The peer's QUIC stack aborted the connection automatically
+6405    #[error("aborted by peer: {0}")]
+6406    ConnectionClosed(frame::ConnectionClose),
+6407    /// The peer closed the connection
+6408    #[error("closed by peer: {0}")]
+6409    ApplicationClosed(frame::ApplicationClose),
+6410    /// The peer is unable to continue processing this connection, usually due to having restarted
+6411    #[error("reset by peer")]
+6412    Reset,
+6413    /// Communication with the peer has lapsed for longer than the negotiated idle timeout
+6414    ///
+6415    /// If neither side is sending keep-alives, a connection will time out after a long enough idle
+6416    /// period even if the peer is still reachable. See also [`TransportConfig::max_idle_timeout()`]
+6417    /// and [`TransportConfig::keep_alive_interval()`].
+6418    #[error("timed out")]
+6419    TimedOut,
+6420    /// The local application closed the connection
+6421    #[error("closed")]
+6422    LocallyClosed,
+6423    /// The connection could not be created because not enough of the CID space is available
+6424    ///
+6425    /// Try using longer connection IDs.
+6426    #[error("CIDs exhausted")]
+6427    CidsExhausted,
+6428}
+6429
+6430impl From<Close> for ConnectionError {
+6431    fn from(x: Close) -> Self {
+6432        match x {
+6433            Close::Connection(reason) => Self::ConnectionClosed(reason),
+6434            Close::Application(reason) => Self::ApplicationClosed(reason),
+6435        }
+6436    }
+6437}
+6438
+6439// For compatibility with API consumers
+6440impl From<ConnectionError> for io::Error {
+6441    fn from(x: ConnectionError) -> Self {
+6442        use ConnectionError::*;
+6443        let kind = match x {
+6444            TimedOut => io::ErrorKind::TimedOut,
+6445            Reset => io::ErrorKind::ConnectionReset,
+6446            ApplicationClosed(_) | ConnectionClosed(_) => io::ErrorKind::ConnectionAborted,
+6447            TransportError(_) | VersionMismatch | LocallyClosed | CidsExhausted => {
+6448                io::ErrorKind::Other
+6449            }
+6450        };
+6451        Self::new(kind, x)
+6452    }
+6453}
+6454
+6455/// Errors that might trigger a path being closed
+6456// TODO(@divma): maybe needs to be reworked based on what we want to do with the public API
+6457#[derive(Debug, Error, PartialEq, Eq, Clone, Copy)]
+6458pub enum PathError {
+6459    /// The extension was not negotiated with the peer
+6460    #[error("multipath extension not negotiated")]
+6461    MultipathNotNegotiated,
+6462    /// Paths can only be opened client-side
+6463    #[error("the server side may not open a path")]
+6464    ServerSideNotAllowed,
+6465    /// Current limits do not allow us to open more paths
+6466    #[error("maximum number of concurrent paths reached")]
+6467    MaxPathIdReached,
+6468    /// No remote CIDs available to open a new path
+6469    #[error("remoted CIDs exhausted")]
+6470    RemoteCidsExhausted,
+6471    /// Path could not be validated and will be abandoned
+6472    #[error("path validation failed")]
+6473    ValidationFailed,
+6474    /// The remote address for the path is not supported by the endpoint
+6475    #[error("invalid remote address")]
+6476    InvalidRemoteAddress(SocketAddr),
+6477}
+6478
+6479/// Errors triggered when abandoning a path
+6480#[derive(Debug, Error, Clone, Eq, PartialEq)]
+6481pub enum ClosePathError {
+6482    /// The path is already closed or was never opened
+6483    #[error("closed path")]
+6484    ClosedPath,
+6485    /// This is the last path, which can not be abandoned
+6486    #[error("last open path")]
+6487    LastOpenPath,
+6488}
+6489
+6490/// Error when the multipath extension was not negotiated, but attempted to be used.
+6491#[derive(Debug, Error, Clone, Copy)]
+6492#[error("Multipath extension not negotiated")]
+6493pub struct MultipathNotNegotiated {
+6494    _private: (),
+6495}
+6496
+6497/// Events of interest to the application
+6498#[derive(Debug)]
+6499pub enum Event {
+6500    /// The connection's handshake data is ready
+6501    HandshakeDataReady,
+6502    /// The connection was successfully established
+6503    Connected,
+6504    /// The TLS handshake was confirmed
+6505    HandshakeConfirmed,
+6506    /// The connection was lost
+6507    ///
+6508    /// Emitted if the peer closes the connection or an error is encountered.
+6509    ConnectionLost {
+6510        /// Reason that the connection was closed
+6511        reason: ConnectionError,
+6512    },
+6513    /// Stream events
+6514    Stream(StreamEvent),
+6515    /// One or more application datagrams have been received
+6516    DatagramReceived,
+6517    /// One or more application datagrams have been sent after blocking
+6518    DatagramsUnblocked,
+6519    /// (Multi)Path events
+6520    Path(PathEvent),
+6521    /// Iroh's nat traversal events
+6522    NatTraversal(iroh_hp::Event),
+6523}
+6524
+6525impl From<PathEvent> for Event {
+6526    fn from(source: PathEvent) -> Self {
+6527        Self::Path(source)
 6528    }
 6529}
 6530
-6531impl fmt::Debug for Connection {
-6532    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-6533        f.debug_struct("Connection")
-6534            .field("handshake_cid", &self.handshake_cid)
-6535            .finish()
-6536    }
-6537}
-6538
-6539#[derive(Debug, Copy, Clone, PartialEq, Eq)]
-6540enum PathBlocked {
-6541    No,
-6542    AntiAmplification,
-6543    Congestion,
-6544    Pacing,
-6545}
+6531fn get_max_ack_delay(params: &TransportParameters) -> Duration {
+6532    Duration::from_micros(params.max_ack_delay.0 * 1000)
+6533}
+6534
+6535// Prevents overflow and improves behavior in extreme circumstances
+6536const MAX_BACKOFF_EXPONENT: u32 = 16;
+6537
+6538/// Minimal remaining size to allow packet coalescing, excluding cryptographic tag
+6539///
+6540/// This must be at least as large as the header for a well-formed empty packet to be coalesced,
+6541/// plus some space for frames. We only care about handshake headers because short header packets
+6542/// necessarily have smaller headers, and initial packets are only ever the first packet in a
+6543/// datagram (because we coalesce in ascending packet space order and the only reason to split a
+6544/// packet is when packet space changes).
+6545const MIN_PACKET_SPACE: usize = MAX_HANDSHAKE_OR_0RTT_HEADER_SIZE + 32;
 6546
-6547/// Fields of `Connection` specific to it being client-side or server-side
-6548enum ConnectionSide {
-6549    Client {
-6550        /// Sent in every outgoing Initial packet. Always empty after Initial keys are discarded
-6551        token: Bytes,
-6552        token_store: Arc<dyn TokenStore>,
-6553        server_name: String,
-6554    },
-6555    Server {
-6556        server_config: Arc<ServerConfig>,
-6557    },
-6558}
+6547/// Largest amount of space that could be occupied by a Handshake or 0-RTT packet's header
+6548///
+6549/// Excludes packet-type-specific fields such as packet number or Initial token
+6550// https://www.rfc-editor.org/rfc/rfc9000.html#name-0-rtt: flags + version + dcid len + dcid +
+6551// scid len + scid + length + pn
+6552const MAX_HANDSHAKE_OR_0RTT_HEADER_SIZE: usize =
+6553    1 + 4 + 1 + MAX_CID_SIZE + 1 + MAX_CID_SIZE + VarInt::from_u32(u16::MAX as u32).size() + 4;
+6554
+6555/// Perform key updates this many packets before the AEAD confidentiality limit.
+6556///
+6557/// Chosen arbitrarily, intended to be large enough to prevent spurious connection loss.
+6558const KEY_UPDATE_MARGIN: u64 = 10_000;
 6559
-6560impl ConnectionSide {
-6561    fn remote_may_migrate(&self, state: &State) -> bool {
-6562        match self {
-6563            Self::Server { server_config } => server_config.migration,
-6564            Self::Client { .. } => {
-6565                if let Some(hs) = state.as_handshake() {
-6566                    hs.allow_server_migration
-6567                } else {
-6568                    false
-6569                }
-6570            }
-6571        }
-6572    }
-6573
-6574    fn is_client(&self) -> bool {
-6575        self.side().is_client()
-6576    }
-6577
-6578    fn is_server(&self) -> bool {
-6579        self.side().is_server()
-6580    }
-6581
-6582    fn side(&self) -> Side {
-6583        match *self {
-6584            Self::Client { .. } => Side::Client,
-6585            Self::Server { .. } => Side::Server,
-6586        }
-6587    }
-6588}
-6589
-6590impl From<SideArgs> for ConnectionSide {
-6591    fn from(side: SideArgs) -> Self {
-6592        match side {
-6593            SideArgs::Client {
-6594                token_store,
-6595                server_name,
-6596            } => Self::Client {
-6597                token: token_store.take(&server_name).unwrap_or_default(),
-6598                token_store,
-6599                server_name,
-6600            },
-6601            SideArgs::Server {
-6602                server_config,
-6603                pref_addr_cid: _,
-6604                path_validated: _,
-6605            } => Self::Server { server_config },
-6606        }
-6607    }
-6608}
-6609
-6610/// Parameters to `Connection::new` specific to it being client-side or server-side
-6611pub(crate) enum SideArgs {
-6612    Client {
-6613        token_store: Arc<dyn TokenStore>,
-6614        server_name: String,
-6615    },
-6616    Server {
-6617        server_config: Arc<ServerConfig>,
-6618        pref_addr_cid: Option<ConnectionId>,
-6619        path_validated: bool,
-6620    },
-6621}
-6622
-6623impl SideArgs {
-6624    pub(crate) fn pref_addr_cid(&self) -> Option<ConnectionId> {
-6625        match *self {
-6626            Self::Client { .. } => None,
-6627            Self::Server { pref_addr_cid, .. } => pref_addr_cid,
-6628        }
-6629    }
-6630
-6631    pub(crate) fn path_validated(&self) -> bool {
-6632        match *self {
-6633            Self::Client { .. } => true,
-6634            Self::Server { path_validated, .. } => path_validated,
-6635        }
-6636    }
-6637
-6638    pub(crate) fn side(&self) -> Side {
-6639        match *self {
-6640            Self::Client { .. } => Side::Client,
-6641            Self::Server { .. } => Side::Server,
-6642        }
-6643    }
-6644}
-6645
-6646/// Reasons why a connection might be lost
-6647#[derive(Debug, Error, Clone, PartialEq, Eq)]
-6648pub enum ConnectionError {
-6649    /// The peer doesn't implement any supported version
-6650    #[error("peer doesn't implement any supported version")]
-6651    VersionMismatch,
-6652    /// The peer violated the QUIC specification as understood by this implementation
-6653    #[error(transparent)]
-6654    TransportError(#[from] TransportError),
-6655    /// The peer's QUIC stack aborted the connection automatically
-6656    #[error("aborted by peer: {0}")]
-6657    ConnectionClosed(frame::ConnectionClose),
-6658    /// The peer closed the connection
-6659    #[error("closed by peer: {0}")]
-6660    ApplicationClosed(frame::ApplicationClose),
-6661    /// The peer is unable to continue processing this connection, usually due to having restarted
-6662    #[error("reset by peer")]
-6663    Reset,
-6664    /// Communication with the peer has lapsed for longer than the negotiated idle timeout
-6665    ///
-6666    /// If neither side is sending keep-alives, a connection will time out after a long enough idle
-6667    /// period even if the peer is still reachable. See also [`TransportConfig::max_idle_timeout()`]
-6668    /// and [`TransportConfig::keep_alive_interval()`].
-6669    #[error("timed out")]
-6670    TimedOut,
-6671    /// The local application closed the connection
-6672    #[error("closed")]
-6673    LocallyClosed,
-6674    /// The connection could not be created because not enough of the CID space is available
-6675    ///
-6676    /// Try using longer connection IDs.
-6677    #[error("CIDs exhausted")]
-6678    CidsExhausted,
-6679}
-6680
-6681impl From<Close> for ConnectionError {
-6682    fn from(x: Close) -> Self {
-6683        match x {
-6684            Close::Connection(reason) => Self::ConnectionClosed(reason),
-6685            Close::Application(reason) => Self::ApplicationClosed(reason),
-6686        }
-6687    }
-6688}
-6689
-6690// For compatibility with API consumers
-6691impl From<ConnectionError> for io::Error {
-6692    fn from(x: ConnectionError) -> Self {
-6693        use ConnectionError::*;
-6694        let kind = match x {
-6695            TimedOut => io::ErrorKind::TimedOut,
-6696            Reset => io::ErrorKind::ConnectionReset,
-6697            ApplicationClosed(_) | ConnectionClosed(_) => io::ErrorKind::ConnectionAborted,
-6698            TransportError(_) | VersionMismatch | LocallyClosed | CidsExhausted => {
-6699                io::ErrorKind::Other
-6700            }
-6701        };
-6702        Self::new(kind, x)
+6560#[derive(Default)]
+6561struct SentFrames {
+6562    retransmits: ThinRetransmits,
+6563    /// The packet number of the largest acknowledged packet for each path
+6564    largest_acked: FxHashMap<PathId, u64>,
+6565    stream_frames: StreamMetaVec,
+6566    /// Whether the packet contains non-retransmittable frames (like datagrams)
+6567    non_retransmits: bool,
+6568    /// If the datagram containing these frames should be padded to the min MTU
+6569    requires_padding: bool,
+6570}
+6571
+6572impl SentFrames {
+6573    /// Returns whether the packet contains only ACKs
+6574    fn is_ack_only(&self, streams: &StreamsState) -> bool {
+6575        !self.largest_acked.is_empty()
+6576            && !self.non_retransmits
+6577            && self.stream_frames.is_empty()
+6578            && self.retransmits.is_empty(streams)
+6579    }
+6580
+6581    fn retransmits_mut(&mut self) -> &mut Retransmits {
+6582        self.retransmits.get_or_create()
+6583    }
+6584
+6585    fn record_sent_frame(&mut self, frame: frame::EncodableFrame<'_>) {
+6586        use frame::EncodableFrame::*;
+6587        match frame {
+6588            PathAck(path_ack_encoder) => {
+6589                if let Some(max) = path_ack_encoder.ranges.max() {
+6590                    self.largest_acked.insert(path_ack_encoder.path_id, max);
+6591                }
+6592            }
+6593            Ack(ack_encoder) => {
+6594                if let Some(max) = ack_encoder.ranges.max() {
+6595                    self.largest_acked.insert(PathId::ZERO, max);
+6596                }
+6597            }
+6598            Close(_) => { /* non retransmittable, but after this we don't really care */ }
+6599            PathResponse(_) => self.non_retransmits = true,
+6600            HandshakeDone(_) => self.retransmits_mut().handshake_done = true,
+6601            ReachOut(frame::ReachOut { round, ip, port }) => self
+6602                .retransmits_mut()
+6603                .reach_out
+6604                .get_or_insert_with(|| (round, Vec::new()))
+6605                .1
+6606                .push((ip, port)),
+6607            ObservedAddr(_) => self.retransmits_mut().observed_addr = true,
+6608            Ping(_) => self.non_retransmits = true,
+6609            ImmediateAck(_) => self.non_retransmits = true,
+6610            AckFrequency(_) => self.retransmits_mut().ack_frequency = true,
+6611            PathChallenge(_) => self.non_retransmits = true,
+6612            Crypto(crypto) => self.retransmits_mut().crypto.push_back(crypto),
+6613            PathAbandon(path_abandon) => {
+6614                self.retransmits_mut()
+6615                    .path_abandon
+6616                    .entry(path_abandon.path_id)
+6617                    .or_insert(path_abandon.error_code);
+6618            }
+6619            PathStatusAvailable(frame::PathStatusAvailable { path_id, .. })
+6620            | PathStatusBackup(frame::PathStatusBackup { path_id, .. }) => {
+6621                self.retransmits_mut().path_status.insert(path_id);
+6622            }
+6623            MaxPathId(_) => self.retransmits_mut().max_path_id = true,
+6624            PathsBlocked(_) => self.retransmits_mut().paths_blocked = true,
+6625            PathCidsBlocked(path_cids_blocked) => {
+6626                self.retransmits_mut()
+6627                    .path_cids_blocked
+6628                    .insert(path_cids_blocked.path_id);
+6629            }
+6630            ResetStream(reset) => self
+6631                .retransmits_mut()
+6632                .reset_stream
+6633                .push((reset.id, reset.error_code)),
+6634            StopSending(stop_sending) => self.retransmits_mut().stop_sending.push(stop_sending),
+6635            NewConnectionId(new_cid) => self.retransmits_mut().new_cids.push(new_cid.issued()),
+6636            RetireConnectionId(retire_cid) => self
+6637                .retransmits_mut()
+6638                .retire_cids
+6639                .push((retire_cid.path_id.unwrap_or_default(), retire_cid.sequence)),
+6640            Datagram(_) => self.non_retransmits = true,
+6641            NewToken(_) => {}
+6642            AddAddress(add_address) => {
+6643                self.retransmits_mut().add_address.insert(add_address);
+6644            }
+6645            RemoveAddress(remove_address) => {
+6646                self.retransmits_mut().remove_address.insert(remove_address);
+6647            }
+6648            StreamMeta(stream_meta_encoder) => self.stream_frames.push(stream_meta_encoder.meta),
+6649            MaxData(_) => self.retransmits_mut().max_data = true,
+6650            MaxStreamData(max) => {
+6651                self.retransmits_mut().max_stream_data.insert(max.id);
+6652            }
+6653            MaxStreams(max_streams) => {
+6654                self.retransmits_mut().max_stream_id[max_streams.dir as usize] = true
+6655            }
+6656        }
+6657    }
+6658}
+6659
+6660/// Compute the negotiated idle timeout based on local and remote max_idle_timeout transport parameters.
+6661///
+6662/// According to the definition of max_idle_timeout, a value of `0` means the timeout is disabled; see <https://www.rfc-editor.org/rfc/rfc9000#section-18.2-4.4.1.>
+6663///
+6664/// According to the negotiation procedure, either the minimum of the timeouts or one specified is used as the negotiated value; see <https://www.rfc-editor.org/rfc/rfc9000#section-10.1-2.>
+6665///
+6666/// Returns the negotiated idle timeout as a `Duration`, or `None` when both endpoints have opted out of idle timeout.
+6667fn negotiate_max_idle_timeout(x: Option<VarInt>, y: Option<VarInt>) -> Option<Duration> {
+6668    match (x, y) {
+6669        (Some(VarInt(0)) | None, Some(VarInt(0)) | None) => None,
+6670        (Some(VarInt(0)) | None, Some(y)) => Some(Duration::from_millis(y.0)),
+6671        (Some(x), Some(VarInt(0)) | None) => Some(Duration::from_millis(x.0)),
+6672        (Some(x), Some(y)) => Some(Duration::from_millis(cmp::min(x, y).0)),
+6673    }
+6674}
+6675
+6676#[cfg(test)]
+6677mod tests {
+6678    use super::*;
+6679
+6680    #[test]
+6681    fn negotiate_max_idle_timeout_commutative() {
+6682        let test_params = [
+6683            (None, None, None),
+6684            (None, Some(VarInt(0)), None),
+6685            (None, Some(VarInt(2)), Some(Duration::from_millis(2))),
+6686            (Some(VarInt(0)), Some(VarInt(0)), None),
+6687            (
+6688                Some(VarInt(2)),
+6689                Some(VarInt(0)),
+6690                Some(Duration::from_millis(2)),
+6691            ),
+6692            (
+6693                Some(VarInt(1)),
+6694                Some(VarInt(4)),
+6695                Some(Duration::from_millis(1)),
+6696            ),
+6697        ];
+6698
+6699        for (left, right, result) in test_params {
+6700            assert_eq!(negotiate_max_idle_timeout(left, right), result);
+6701            assert_eq!(negotiate_max_idle_timeout(right, left), result);
+6702        }
 6703    }
-6704}
-6705
-6706/// Errors that might trigger a path being closed
-6707// TODO(@divma): maybe needs to be reworked based on what we want to do with the public API
-6708#[derive(Debug, Error, PartialEq, Eq, Clone, Copy)]
-6709pub enum PathError {
-6710    /// The extension was not negotiated with the peer
-6711    #[error("multipath extension not negotiated")]
-6712    MultipathNotNegotiated,
-6713    /// Paths can only be opened client-side
-6714    #[error("the server side may not open a path")]
-6715    ServerSideNotAllowed,
-6716    /// Current limits do not allow us to open more paths
-6717    #[error("maximum number of concurrent paths reached")]
-6718    MaxPathIdReached,
-6719    /// No remote CIDs available to open a new path
-6720    #[error("remoted CIDs exhausted")]
-6721    RemoteCidsExhausted,
-6722    /// Path could not be validated and will be abandoned
-6723    #[error("path validation failed")]
-6724    ValidationFailed,
-6725    /// The remote address for the path is not supported by the endpoint
-6726    #[error("invalid remote address")]
-6727    InvalidRemoteAddress(SocketAddr),
-6728}
-6729
-6730/// Errors triggered when abandoning a path
-6731#[derive(Debug, Error, Clone, Eq, PartialEq)]
-6732pub enum ClosePathError {
-6733    /// The path is already closed or was never opened
-6734    #[error("closed path")]
-6735    ClosedPath,
-6736    /// This is the last path, which can not be abandoned
-6737    #[error("last open path")]
-6738    LastOpenPath,
-6739}
-6740
-6741/// Error when the multipath extension was not negotiated, but attempted to be used.
-6742#[derive(Debug, Error, Clone, Copy)]
-6743#[error("Multipath extension not negotiated")]
-6744pub struct MultipathNotNegotiated {
-6745    _private: (),
-6746}
-6747
-6748/// Events of interest to the application
-6749#[derive(Debug)]
-6750pub enum Event {
-6751    /// The connection's handshake data is ready
-6752    HandshakeDataReady,
-6753    /// The connection was successfully established
-6754    Connected,
-6755    /// The TLS handshake was confirmed
-6756    HandshakeConfirmed,
-6757    /// The connection was lost
-6758    ///
-6759    /// Emitted if the peer closes the connection or an error is encountered.
-6760    ConnectionLost {
-6761        /// Reason that the connection was closed
-6762        reason: ConnectionError,
-6763    },
-6764    /// Stream events
-6765    Stream(StreamEvent),
-6766    /// One or more application datagrams have been received
-6767    DatagramReceived,
-6768    /// One or more application datagrams have been sent after blocking
-6769    DatagramsUnblocked,
-6770    /// (Multi)Path events
-6771    Path(PathEvent),
-6772    /// Iroh's nat traversal events
-6773    NatTraversal(iroh_hp::Event),
-6774}
-6775
-6776impl From<PathEvent> for Event {
-6777    fn from(source: PathEvent) -> Self {
-6778        Self::Path(source)
-6779    }
-6780}
-6781
-6782fn get_max_ack_delay(params: &TransportParameters) -> Duration {
-6783    Duration::from_micros(params.max_ack_delay.0 * 1000)
-6784}
-6785
-6786// Prevents overflow and improves behavior in extreme circumstances
-6787const MAX_BACKOFF_EXPONENT: u32 = 16;
-6788
-6789/// Minimal remaining size to allow packet coalescing, excluding cryptographic tag
-6790///
-6791/// This must be at least as large as the header for a well-formed empty packet to be coalesced,
-6792/// plus some space for frames. We only care about handshake headers because short header packets
-6793/// necessarily have smaller headers, and initial packets are only ever the first packet in a
-6794/// datagram (because we coalesce in ascending packet space order and the only reason to split a
-6795/// packet is when packet space changes).
-6796const MIN_PACKET_SPACE: usize = MAX_HANDSHAKE_OR_0RTT_HEADER_SIZE + 32;
-6797
-6798/// Largest amount of space that could be occupied by a Handshake or 0-RTT packet's header
-6799///
-6800/// Excludes packet-type-specific fields such as packet number or Initial token
-6801// https://www.rfc-editor.org/rfc/rfc9000.html#name-0-rtt: flags + version + dcid len + dcid +
-6802// scid len + scid + length + pn
-6803const MAX_HANDSHAKE_OR_0RTT_HEADER_SIZE: usize =
-6804    1 + 4 + 1 + MAX_CID_SIZE + 1 + MAX_CID_SIZE + VarInt::from_u32(u16::MAX as u32).size() + 4;
-6805
-6806/// Perform key updates this many packets before the AEAD confidentiality limit.
-6807///
-6808/// Chosen arbitrarily, intended to be large enough to prevent spurious connection loss.
-6809const KEY_UPDATE_MARGIN: u64 = 10_000;
-6810
-6811#[derive(Default)]
-6812struct SentFrames {
-6813    retransmits: ThinRetransmits,
-6814    /// The packet number of the largest acknowledged packet for each path
-6815    largest_acked: FxHashMap<PathId, u64>,
-6816    stream_frames: StreamMetaVec,
-6817    /// Whether the packet contains non-retransmittable frames (like datagrams)
-6818    non_retransmits: bool,
-6819    /// If the datagram containing these frames should be padded to the min MTU
-6820    requires_padding: bool,
-6821}
-6822
-6823impl SentFrames {
-6824    /// Returns whether the packet contains only ACKs
-6825    fn is_ack_only(&self, streams: &StreamsState) -> bool {
-6826        !self.largest_acked.is_empty()
-6827            && !self.non_retransmits
-6828            && self.stream_frames.is_empty()
-6829            && self.retransmits.is_empty(streams)
-6830    }
-6831}
-6832
-6833/// Compute the negotiated idle timeout based on local and remote max_idle_timeout transport parameters.
-6834///
-6835/// According to the definition of max_idle_timeout, a value of `0` means the timeout is disabled; see <https://www.rfc-editor.org/rfc/rfc9000#section-18.2-4.4.1.>
-6836///
-6837/// According to the negotiation procedure, either the minimum of the timeouts or one specified is used as the negotiated value; see <https://www.rfc-editor.org/rfc/rfc9000#section-10.1-2.>
-6838///
-6839/// Returns the negotiated idle timeout as a `Duration`, or `None` when both endpoints have opted out of idle timeout.
-6840fn negotiate_max_idle_timeout(x: Option<VarInt>, y: Option<VarInt>) -> Option<Duration> {
-6841    match (x, y) {
-6842        (Some(VarInt(0)) | None, Some(VarInt(0)) | None) => None,
-6843        (Some(VarInt(0)) | None, Some(y)) => Some(Duration::from_millis(y.0)),
-6844        (Some(x), Some(VarInt(0)) | None) => Some(Duration::from_millis(x.0)),
-6845        (Some(x), Some(y)) => Some(Duration::from_millis(cmp::min(x, y).0)),
-6846    }
-6847}
-6848
-6849#[cfg(test)]
-6850mod tests {
-6851    use super::*;
-6852
-6853    #[test]
-6854    fn negotiate_max_idle_timeout_commutative() {
-6855        let test_params = [
-6856            (None, None, None),
-6857            (None, Some(VarInt(0)), None),
-6858            (None, Some(VarInt(2)), Some(Duration::from_millis(2))),
-6859            (Some(VarInt(0)), Some(VarInt(0)), None),
-6860            (
-6861                Some(VarInt(2)),
-6862                Some(VarInt(0)),
-6863                Some(Duration::from_millis(2)),
-6864            ),
-6865            (
-6866                Some(VarInt(1)),
-6867                Some(VarInt(4)),
-6868                Some(Duration::from_millis(1)),
-6869            ),
-6870        ];
-6871
-6872        for (left, right, result) in test_params {
-6873            assert_eq!(negotiate_max_idle_timeout(left, right), result);
-6874            assert_eq!(negotiate_max_idle_timeout(right, left), result);
-6875        }
-6876    }
-6877}

\ No newline at end of file
+6704}

\ No newline at end of file diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/packet_builder.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/packet_builder.rs.html index de299604a..753742c67 100644 --- a/pr/323/docs/src/iroh_quinn_proto/connection/packet_builder.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/connection/packet_builder.rs.html @@ -4,372 +4,430 @@ 4 5use super::{Connection, PathId, SentFrames, TransmitBuf, spaces::SentPacket}; 6use crate::{ -7 ConnectionId, Instant, MIN_INITIAL_SIZE, TransportError, TransportErrorCode, -8 connection::{ConnectionSide, qlog::QlogSentPacket}, -9 frame::{self, Close}, -10 packet::{FIXED_BIT, Header, InitialHeader, LongType, PacketNumber, PartialEncode, SpaceId}, -11}; -12 -13/// QUIC packet builder -14/// -15/// This allows building QUIC packets: it takes care of writing the header, allows writing -16/// frames and on [`PacketBuilder::finish`] (or [`PacketBuilder::finish_and_track`]) it -17/// encrypts the packet so it is ready to be sent on the wire. -18/// -19/// The builder manages the write buffer into which the packet is written, and directly -20/// implements [`BufMut`] to write frames into the packet. -21pub(super) struct PacketBuilder<'a, 'b> { -22 pub(super) buf: &'a mut TransmitBuf<'b>, -23 pub(super) space: SpaceId, -24 path: PathId, -25 pub(super) partial_encode: PartialEncode, -26 pub(super) ack_eliciting: bool, -27 pub(super) exact_number: u64, -28 pub(super) short_header: bool, -29 /// Smallest absolute position in the associated buffer that must be occupied by this packet's -30 /// frames -31 pub(super) min_size: usize, -32 pub(super) tag_len: usize, -33 pub(super) _span: tracing::span::EnteredSpan, -34} -35 -36impl<'a, 'b> PacketBuilder<'a, 'b> { -37 /// Write a new packet header to `buffer` and determine the packet's properties -38 /// -39 /// Marks the connection drained and returns `None` if the confidentiality limit would be -40 /// violated. -41 pub(super) fn new( -42 now: Instant, -43 space_id: SpaceId, -44 path_id: PathId, -45 dst_cid: ConnectionId, -46 buffer: &'a mut TransmitBuf<'b>, -47 ack_eliciting: bool, -48 conn: &mut Connection, -49 #[allow(unused)] qlog: &mut QlogSentPacket, -50 ) -> Option<Self> -51 where -52 'b: 'a, -53 { -54 let version = conn.version; -55 // Initiate key update if we're approaching the confidentiality limit -56 let sent_with_keys = conn.spaces[space_id].sent_with_keys(); -57 if space_id == SpaceId::Data { -58 if sent_with_keys >= conn.key_phase_size { -59 debug!("routine key update due to phase exhaustion"); -60 conn.force_key_update(); -61 } -62 } else { -63 let confidentiality_limit = conn.spaces[space_id] -64 .crypto -65 .as_ref() -66 .map_or_else( -67 || &conn.zero_rtt_crypto.as_ref().unwrap().packet, -68 |keys| &keys.packet.local, -69 ) -70 .confidentiality_limit(); -71 if sent_with_keys.saturating_add(1) == confidentiality_limit { -72 // We still have time to attempt a graceful close -73 conn.close_inner( -74 now, -75 Close::Connection(frame::ConnectionClose { -76 error_code: TransportErrorCode::AEAD_LIMIT_REACHED, -77 frame_type: frame::MaybeFrame::None, -78 reason: Bytes::from_static(b"confidentiality limit reached"), -79 }), -80 ) -81 } else if sent_with_keys > confidentiality_limit { -82 // Confidentiality limited violated and there's nothing we can do -83 conn.kill( -84 TransportError::AEAD_LIMIT_REACHED("confidentiality limit reached").into(), -85 ); -86 return None; -87 } -88 } -89 -90 let space = &mut conn.spaces[space_id]; -91 let exact_number = space.for_path(path_id).get_tx_number(&mut conn.rng); -92 let span = trace_span!("send", space = ?space_id, pn = exact_number, %path_id).entered(); +7 ConnectionId, FrameStats, Instant, MIN_INITIAL_SIZE, TransportError, TransportErrorCode, +8 coding::Encodable, +9 connection::{ConnectionSide, qlog::QlogSentPacket, spaces::Retransmits}, +10 frame::{self, Close, EncodableFrame}, +11 packet::{FIXED_BIT, Header, InitialHeader, LongType, PacketNumber, PartialEncode, SpaceId}, +12}; +13 +14/// QUIC packet builder +15/// +16/// This allows building QUIC packets: it takes care of writing the header, allows writing +17/// frames and on [`PacketBuilder::finish`] (or [`PacketBuilder::finish_and_track`]) it +18/// encrypts the packet so it is ready to be sent on the wire. +19/// +20/// The builder manages the write buffer into which the packet is written, and directly +21/// implements [`BufMut`] to write frames into the packet. +22pub(super) struct PacketBuilder<'a, 'b> { +23 pub(super) buf: &'a mut TransmitBuf<'b>, +24 pub(super) space: SpaceId, +25 path: PathId, +26 pub(super) partial_encode: PartialEncode, +27 pub(super) ack_eliciting: bool, +28 pub(super) exact_number: u64, +29 pub(super) short_header: bool, +30 /// Smallest absolute position in the associated buffer that must be occupied by this packet's +31 /// frames +32 pub(super) min_size: usize, +33 pub(super) tag_len: usize, +34 pub(super) _span: tracing::span::EnteredSpan, +35 qlog: QlogSentPacket, +36 sent_frames: SentFrames, +37} +38 +39impl<'a, 'b> PacketBuilder<'a, 'b> { +40 /// Write a new packet header to `buffer` and determine the packet's properties +41 /// +42 /// Marks the connection drained and returns `None` if the confidentiality limit would be +43 /// violated. +44 pub(super) fn new( +45 now: Instant, +46 space_id: SpaceId, +47 path_id: PathId, +48 dst_cid: ConnectionId, +49 buffer: &'a mut TransmitBuf<'b>, +50 ack_eliciting: bool, +51 conn: &mut Connection, +52 ) -> Option<Self> +53 where +54 'b: 'a, +55 { +56 let mut qlog = QlogSentPacket::default(); +57 +58 let version = conn.version; +59 // Initiate key update if we're approaching the confidentiality limit +60 let sent_with_keys = conn.spaces[space_id].sent_with_keys(); +61 if space_id == SpaceId::Data { +62 if sent_with_keys >= conn.key_phase_size { +63 debug!("routine key update due to phase exhaustion"); +64 conn.force_key_update(); +65 } +66 } else { +67 let confidentiality_limit = conn.spaces[space_id] +68 .crypto +69 .as_ref() +70 .map_or_else( +71 || &conn.zero_rtt_crypto.as_ref().unwrap().packet, +72 |keys| &keys.packet.local, +73 ) +74 .confidentiality_limit(); +75 if sent_with_keys.saturating_add(1) == confidentiality_limit { +76 // We still have time to attempt a graceful close +77 conn.close_inner( +78 now, +79 Close::Connection(frame::ConnectionClose { +80 error_code: TransportErrorCode::AEAD_LIMIT_REACHED, +81 frame_type: frame::MaybeFrame::None, +82 reason: Bytes::from_static(b"confidentiality limit reached"), +83 }), +84 ) +85 } else if sent_with_keys > confidentiality_limit { +86 // Confidentiality limited violated and there's nothing we can do +87 conn.kill( +88 TransportError::AEAD_LIMIT_REACHED("confidentiality limit reached").into(), +89 ); +90 return None; +91 } +92 } 93 -94 let number = PacketNumber::new( -95 exact_number, -96 space.for_path(path_id).largest_acked_packet.unwrap_or(0), -97 ); -98 let header = match space_id { -99 SpaceId::Data if space.crypto.is_some() => Header::Short { -100 dst_cid, -101 number, -102 spin: if conn.spin_enabled { -103 conn.spin -104 } else { -105 conn.rng.random() -106 }, -107 key_phase: conn.key_phase, -108 }, -109 SpaceId::Data => Header::Long { -110 ty: LongType::ZeroRtt, -111 src_cid: conn.handshake_cid, -112 dst_cid, -113 number, -114 version, -115 }, -116 SpaceId::Handshake => Header::Long { -117 ty: LongType::Handshake, -118 src_cid: conn.handshake_cid, -119 dst_cid, -120 number, -121 version, -122 }, -123 SpaceId::Initial => Header::Initial(InitialHeader { -124 src_cid: conn.handshake_cid, -125 dst_cid, -126 token: match &conn.side { -127 ConnectionSide::Client { token, .. } => token.clone(), -128 ConnectionSide::Server { .. } => Bytes::new(), -129 }, -130 number, -131 version, -132 }), -133 }; -134 -135 let partial_encode = header.encode(buffer); -136 if conn.peer_params.grease_quic_bit && conn.rng.random() { -137 buffer.as_mut_slice()[partial_encode.start] ^= FIXED_BIT; -138 } -139 -140 let (sample_size, tag_len) = if let Some(ref crypto) = space.crypto { -141 ( -142 crypto.header.local.sample_size(), -143 crypto.packet.local.tag_len(), -144 ) -145 } else if space_id == SpaceId::Data { -146 let zero_rtt = conn.zero_rtt_crypto.as_ref().unwrap(); -147 (zero_rtt.header.sample_size(), zero_rtt.packet.tag_len()) -148 } else { -149 unreachable!(); -150 }; -151 -152 // Each packet must be large enough for header protection sampling, i.e. the combined -153 // lengths of the encoded packet number and protected payload must be at least 4 bytes -154 // longer than the sample required for header protection. Further, each packet should be at -155 // least tag_len + 6 bytes larger than the destination CID on incoming packets so that the -156 // peer may send stateless resets that are indistinguishable from regular traffic. -157 -158 // pn_len + payload_len + tag_len >= sample_size + 4 -159 // payload_len >= sample_size + 4 - pn_len - tag_len -160 let min_size = Ord::max( -161 buffer.len() + (sample_size + 4).saturating_sub(number.len() + tag_len), -162 partial_encode.start + dst_cid.len() + 6, -163 ); -164 let max_size = buffer.datagram_max_offset() - tag_len; -165 debug_assert!(max_size >= min_size); -166 -167 qlog.header( -168 &header, -169 Some(exact_number), -170 space_id, -171 space_id == SpaceId::Data && conn.spaces[SpaceId::Data].crypto.is_none(), -172 path_id, -173 ); -174 -175 Some(Self { -176 buf: buffer, -177 space: space_id, -178 path: path_id, -179 partial_encode, -180 exact_number, -181 short_header: header.is_short(), -182 min_size, -183 tag_len, -184 ack_eliciting, -185 _span: span, -186 }) -187 } -188 -189 /// Append the minimum amount of padding to the packet such that, after encryption, the -190 /// enclosing datagram will occupy at least `min_size` bytes -191 pub(super) fn pad_to(&mut self, min_size: u16) { -192 // The datagram might already have a larger minimum size than the caller is requesting, if -193 // e.g. we're coalescing packets and have populated more than `min_size` bytes with packets -194 // already. -195 self.min_size = Ord::max( -196 self.min_size, -197 self.buf.datagram_start_offset() + (min_size as usize) - self.tag_len, -198 ); -199 } -200 -201 /// Returns a writable buffer limited to the remaining frame space -202 /// -203 /// The [`BufMut::remaining_mut`] call on the returned buffer indicates the amount of -204 /// space available to write QUIC frames into. -205 // In rust 1.82 we can use `-> impl BufMut + use<'_, 'a, 'b>` -206 pub(super) fn frame_space_mut(&mut self) -> bytes::buf::Limit<&mut TransmitBuf<'b>> { -207 self.buf.limit(self.frame_space_remaining()) -208 } -209 -210 pub(super) fn finish_and_track( -211 mut self, -212 now: Instant, -213 conn: &mut Connection, -214 path_id: PathId, -215 sent: SentFrames, -216 pad_datagram: PadDatagram, -217 qlog: QlogSentPacket, -218 ) { -219 match pad_datagram { -220 PadDatagram::No => (), -221 PadDatagram::ToSize(size) => self.pad_to(size), -222 PadDatagram::ToSegmentSize => self.pad_to(self.buf.segment_size() as u16), -223 PadDatagram::ToMinMtu => self.pad_to(MIN_INITIAL_SIZE), -224 } -225 let ack_eliciting = self.ack_eliciting; -226 let exact_number = self.exact_number; -227 let space_id = self.space; -228 let (size, padded) = self.finish(conn, now, qlog); -229 -230 let size = match padded || ack_eliciting { -231 true => size as u16, -232 false => 0, -233 }; -234 -235 let packet = SentPacket { -236 path_generation: conn.paths.get_mut(&path_id).unwrap().data.generation(), -237 largest_acked: sent.largest_acked, -238 time_sent: now, -239 size, -240 ack_eliciting, -241 retransmits: sent.retransmits, -242 stream_frames: sent.stream_frames, -243 }; -244 -245 conn.paths.get_mut(&path_id).unwrap().data.sent( -246 exact_number, -247 packet, -248 conn.spaces[space_id].for_path(path_id), -249 ); -250 conn.path_stats.entry(path_id).or_default().sent_packets += 1; -251 conn.reset_keep_alive(path_id, now); -252 if size != 0 { -253 if ack_eliciting { -254 conn.spaces[space_id] -255 .for_path(path_id) -256 .time_of_last_ack_eliciting_packet = Some(now); -257 if conn.permit_idle_reset { -258 conn.reset_idle_timeout(now, space_id, path_id); -259 } -260 conn.permit_idle_reset = false; -261 } -262 conn.set_loss_detection_timer(now, path_id); -263 conn.path_data_mut(path_id).pacing.on_transmit(size); -264 } -265 } -266 -267 /// Encrypt packet, returning the length of the packet and whether padding was added -268 pub(super) fn finish( -269 self, -270 conn: &mut Connection, -271 now: Instant, -272 #[allow(unused_mut)] mut qlog: QlogSentPacket, -273 ) -> (usize, bool) { -274 debug_assert!( -275 self.buf.len() <= self.buf.datagram_max_offset() - self.tag_len, -276 "packet exceeds maximum size" -277 ); -278 let pad = self.buf.len() < self.min_size; -279 if pad { -280 let padding = self.min_size - self.buf.len(); -281 trace!("PADDING * {}", padding); -282 self.buf.put_bytes(0, padding); -283 qlog.frame_padding(padding); -284 } +94 let space = &mut conn.spaces[space_id]; +95 let exact_number = space.for_path(path_id).get_tx_number(&mut conn.rng); +96 let span = trace_span!("send", space = ?space_id, pn = exact_number, %path_id).entered(); +97 +98 let number = PacketNumber::new( +99 exact_number, +100 space.for_path(path_id).largest_acked_packet.unwrap_or(0), +101 ); +102 let header = match space_id { +103 SpaceId::Data if space.crypto.is_some() => Header::Short { +104 dst_cid, +105 number, +106 spin: if conn.spin_enabled { +107 conn.spin +108 } else { +109 conn.rng.random() +110 }, +111 key_phase: conn.key_phase, +112 }, +113 SpaceId::Data => Header::Long { +114 ty: LongType::ZeroRtt, +115 src_cid: conn.handshake_cid, +116 dst_cid, +117 number, +118 version, +119 }, +120 SpaceId::Handshake => Header::Long { +121 ty: LongType::Handshake, +122 src_cid: conn.handshake_cid, +123 dst_cid, +124 number, +125 version, +126 }, +127 SpaceId::Initial => Header::Initial(InitialHeader { +128 src_cid: conn.handshake_cid, +129 dst_cid, +130 token: match &conn.side { +131 ConnectionSide::Client { token, .. } => token.clone(), +132 ConnectionSide::Server { .. } => Bytes::new(), +133 }, +134 number, +135 version, +136 }), +137 }; +138 +139 let partial_encode = header.encode(buffer); +140 if conn.peer_params.grease_quic_bit && conn.rng.random() { +141 buffer.as_mut_slice()[partial_encode.start] ^= FIXED_BIT; +142 } +143 +144 let (sample_size, tag_len) = if let Some(ref crypto) = space.crypto { +145 ( +146 crypto.header.local.sample_size(), +147 crypto.packet.local.tag_len(), +148 ) +149 } else if space_id == SpaceId::Data { +150 let zero_rtt = conn.zero_rtt_crypto.as_ref().unwrap(); +151 (zero_rtt.header.sample_size(), zero_rtt.packet.tag_len()) +152 } else { +153 unreachable!(); +154 }; +155 +156 // Each packet must be large enough for header protection sampling, i.e. the combined +157 // lengths of the encoded packet number and protected payload must be at least 4 bytes +158 // longer than the sample required for header protection. Further, each packet should be at +159 // least tag_len + 6 bytes larger than the destination CID on incoming packets so that the +160 // peer may send stateless resets that are indistinguishable from regular traffic. +161 +162 // pn_len + payload_len + tag_len >= sample_size + 4 +163 // payload_len >= sample_size + 4 - pn_len - tag_len +164 let min_size = Ord::max( +165 buffer.len() + (sample_size + 4).saturating_sub(number.len() + tag_len), +166 partial_encode.start + dst_cid.len() + 6, +167 ); +168 let max_size = buffer.datagram_max_offset() - tag_len; +169 debug_assert!(max_size >= min_size); +170 +171 qlog.header( +172 &header, +173 Some(exact_number), +174 space_id, +175 space_id == SpaceId::Data && conn.spaces[SpaceId::Data].crypto.is_none(), +176 path_id, +177 ); +178 +179 Some(Self { +180 buf: buffer, +181 space: space_id, +182 path: path_id, +183 partial_encode, +184 exact_number, +185 short_header: header.is_short(), +186 min_size, +187 tag_len, +188 ack_eliciting, +189 qlog, +190 sent_frames: SentFrames::default(), +191 _span: span, +192 }) +193 } +194 +195 #[cfg(test)] +196 pub(crate) fn simple_data_buf(buf: &'a mut TransmitBuf<'b>) -> Self { +197 Self { +198 buf, +199 space: SpaceId::Data, +200 path: PathId::ZERO, +201 partial_encode: PartialEncode::dummy(), +202 ack_eliciting: true, +203 exact_number: 0, +204 short_header: false, +205 min_size: 0, +206 tag_len: 0, +207 _span: trace_span!("test").entered(), +208 qlog: QlogSentPacket::default(), +209 sent_frames: SentFrames::default(), +210 } +211 } +212 +213 /// Append the minimum amount of padding to the packet such that, after encryption, the +214 /// enclosing datagram will occupy at least `min_size` bytes +215 pub(super) fn pad_to(&mut self, min_size: u16) { +216 // The datagram might already have a larger minimum size than the caller is requesting, if +217 // e.g. we're coalescing packets and have populated more than `min_size` bytes with packets +218 // already. +219 self.min_size = Ord::max( +220 self.min_size, +221 self.buf.datagram_start_offset() + (min_size as usize) - self.tag_len, +222 ); +223 } +224 +225 pub(super) fn write_frame<'c>( +226 &mut self, +227 frame: impl Into<EncodableFrame<'c>>, +228 stats: &mut FrameStats, +229 ) { +230 self.write_frame_with_log_msg(frame, stats, None); +231 } +232 +233 pub(super) fn write_frame_with_log_msg<'c>( +234 &mut self, +235 frame: impl Into<EncodableFrame<'c>>, +236 stats: &mut FrameStats, +237 msg: Option<&'static str>, +238 ) { +239 let frame = frame.into(); +240 frame.encode(&mut self.frame_space_mut()); +241 stats.record(frame.get_type()); +242 self.qlog.record(&frame); +243 match msg { +244 Some(msg) => trace!(%frame, msg), +245 None => trace!(%frame), +246 } +247 self.sent_frames.record_sent_frame(frame); +248 } +249 +250 /// Returns a writable buffer limited to the remaining frame space +251 /// +252 /// The [`BufMut::remaining_mut`] call on the returned buffer indicates the amount of +253 /// space available to write QUIC frames into. +254 // In rust 1.82 we can use `-> impl BufMut + use<'_, 'a, 'b>` +255 pub(super) fn frame_space_mut(&mut self) -> bytes::buf::Limit<&mut TransmitBuf<'b>> { +256 self.buf.limit(self.frame_space_remaining()) +257 } +258 +259 pub(super) fn sent_frames(&self) -> &SentFrames { +260 &self.sent_frames +261 } +262 +263 pub(super) fn finish_and_track( +264 mut self, +265 now: Instant, +266 conn: &mut Connection, +267 path_id: PathId, +268 pad_datagram: PadDatagram, +269 ) { +270 match pad_datagram { +271 PadDatagram::No => (), +272 PadDatagram::ToSize(size) => self.pad_to(size), +273 PadDatagram::ToSegmentSize => self.pad_to(self.buf.segment_size() as u16), +274 PadDatagram::ToMinMtu => self.pad_to(MIN_INITIAL_SIZE), +275 } +276 let ack_eliciting = self.ack_eliciting; +277 let exact_number = self.exact_number; +278 let space_id = self.space; +279 let (size, padded, sent) = self.finish(conn, now); +280 +281 let size = match padded || ack_eliciting { +282 true => size as u16, +283 false => 0, +284 }; 285 -286 let space = &conn.spaces[self.space]; -287 let (header_crypto, packet_crypto) = if let Some(ref crypto) = space.crypto { -288 (&*crypto.header.local, &*crypto.packet.local) -289 } else if self.space == SpaceId::Data { -290 let zero_rtt = conn.zero_rtt_crypto.as_ref().unwrap(); -291 (&*zero_rtt.header, &*zero_rtt.packet) -292 } else { -293 unreachable!("tried to send {:?} packet without keys", self.space); +286 let packet = SentPacket { +287 path_generation: conn.paths.get_mut(&path_id).unwrap().data.generation(), +288 largest_acked: sent.largest_acked, +289 time_sent: now, +290 size, +291 ack_eliciting, +292 retransmits: sent.retransmits, +293 stream_frames: sent.stream_frames, 294 }; 295 -296 debug_assert_eq!( -297 packet_crypto.tag_len(), -298 self.tag_len, -299 "Mismatching crypto tag len" -300 ); -301 -302 self.buf.put_bytes(0, packet_crypto.tag_len()); -303 let encode_start = self.partial_encode.start; -304 let packet_buf = &mut self.buf.as_mut_slice()[encode_start..]; -305 // for packet protection, PathId::ZERO and no path are equivalent. -306 self.partial_encode.finish( -307 packet_buf, -308 header_crypto, -309 Some((self.exact_number, self.path, packet_crypto)), -310 ); -311 -312 let packet_len = self.buf.len() - encode_start; -313 trace!(size = %packet_len, short_header = %self.short_header, "wrote packet"); -314 qlog.finalize(packet_len); -315 conn.qlog.emit_packet_sent(qlog, now); -316 (packet_len, pad) -317 } -318 -319 /// The number of additional bytes the current packet would take up if it was finished now -320 /// -321 /// This will include any padding which is required to make the size large enough to be -322 /// encrypted correctly. -323 pub(super) fn predict_packet_end(&self) -> usize { -324 self.buf.len().max(self.min_size) + self.tag_len - self.buf.len() -325 } -326 -327 /// Returns the remaining space in the packet that can be taken up by QUIC frames -328 /// -329 /// This leaves space in the datagram for the cryptographic tag that needs to be written -330 /// when the packet is finished. -331 pub(super) fn frame_space_remaining(&self) -> usize { -332 let max_offset = self.buf.datagram_max_offset() - self.tag_len; -333 max_offset.saturating_sub(self.buf.len()) -334 } -335} -336 -337#[derive(Debug, Copy, Clone)] -338pub(super) enum PadDatagram { -339 /// Do not pad the datagram -340 No, -341 /// To a specific size -342 ToSize(u16), -343 /// Pad to the current MTU/segment size -344 /// -345 /// For the first datagram in a transmit the MTU is the same as the -346 /// [`TransmitBuf::segment_size`]. -347 ToSegmentSize, -348 /// Pad to [`MIN_INITIAL_SIZE`], the minimal QUIC MTU of 1200 bytes -349 ToMinMtu, -350} +296 conn.paths.get_mut(&path_id).unwrap().data.sent( +297 exact_number, +298 packet, +299 conn.spaces[space_id].for_path(path_id), +300 ); +301 conn.path_stats.entry(path_id).or_default().sent_packets += 1; +302 conn.reset_keep_alive(path_id, now); +303 if size != 0 { +304 if ack_eliciting { +305 conn.spaces[space_id] +306 .for_path(path_id) +307 .time_of_last_ack_eliciting_packet = Some(now); +308 if conn.permit_idle_reset { +309 conn.reset_idle_timeout(now, space_id, path_id); +310 } +311 conn.permit_idle_reset = false; +312 } +313 conn.set_loss_detection_timer(now, path_id); +314 conn.path_data_mut(path_id).pacing.on_transmit(size); +315 } +316 } +317 +318 /// Encrypt packet, returning the length of the packet and whether padding was added +319 pub(super) fn finish( +320 mut self, +321 conn: &mut Connection, +322 now: Instant, +323 ) -> (usize, bool, SentFrames) { +324 debug_assert!( +325 self.buf.len() <= self.buf.datagram_max_offset() - self.tag_len, +326 "packet exceeds maximum size" +327 ); +328 let pad = self.buf.len() < self.min_size; +329 if pad { +330 let padding = self.min_size - self.buf.len(); +331 trace!("PADDING * {}", padding); +332 self.buf.put_bytes(0, padding); +333 self.qlog.frame_padding(padding); +334 } +335 +336 let space = &conn.spaces[self.space]; +337 let (header_crypto, packet_crypto) = if let Some(ref crypto) = space.crypto { +338 (&*crypto.header.local, &*crypto.packet.local) +339 } else if self.space == SpaceId::Data { +340 let zero_rtt = conn.zero_rtt_crypto.as_ref().unwrap(); +341 (&*zero_rtt.header, &*zero_rtt.packet) +342 } else { +343 unreachable!("tried to send {:?} packet without keys", self.space); +344 }; +345 +346 debug_assert_eq!( +347 packet_crypto.tag_len(), +348 self.tag_len, +349 "Mismatching crypto tag len" +350 ); 351 -352impl std::ops::BitOrAssign for PadDatagram { -353 fn bitor_assign(&mut self, rhs: Self) { -354 *self = *self | rhs; -355 } -356} -357 -358impl std::ops::BitOr for PadDatagram { -359 type Output = Self; -360 -361 fn bitor(self, rhs: Self) -> Self::Output { -362 match (self, rhs) { -363 (Self::No, rhs) => rhs, -364 (Self::ToSize(size), Self::No) => Self::ToSize(size), -365 (Self::ToSize(a), Self::ToSize(b)) => Self::ToSize(a.max(b)), -366 (Self::ToSize(_), Self::ToSegmentSize) => Self::ToSegmentSize, -367 (Self::ToSize(_), Self::ToMinMtu) => Self::ToMinMtu, -368 (Self::ToSegmentSize, Self::No) => Self::ToSegmentSize, -369 (Self::ToSegmentSize, Self::ToSize(_)) => Self::ToSegmentSize, -370 (Self::ToSegmentSize, Self::ToSegmentSize) => Self::ToSegmentSize, -371 (Self::ToSegmentSize, Self::ToMinMtu) => Self::ToMinMtu, -372 (Self::ToMinMtu, _) => Self::ToMinMtu, -373 } -374 } -375} \ No newline at end of file +352 self.buf.put_bytes(0, packet_crypto.tag_len()); +353 let encode_start = self.partial_encode.start; +354 let packet_buf = &mut self.buf.as_mut_slice()[encode_start..]; +355 // for packet protection, PathId::ZERO and no path are equivalent. +356 self.partial_encode.finish( +357 packet_buf, +358 header_crypto, +359 Some((self.exact_number, self.path, packet_crypto)), +360 ); +361 +362 let packet_len = self.buf.len() - encode_start; +363 trace!(size = %packet_len, short_header = %self.short_header, "wrote packet"); +364 self.qlog.finalize(packet_len); +365 conn.qlog.emit_packet_sent(self.qlog, now); +366 (packet_len, pad, self.sent_frames) +367 } +368 +369 /// The number of additional bytes the current packet would take up if it was finished now +370 /// +371 /// This will include any padding which is required to make the size large enough to be +372 /// encrypted correctly. +373 pub(super) fn predict_packet_end(&self) -> usize { +374 self.buf.len().max(self.min_size) + self.tag_len - self.buf.len() +375 } +376 +377 /// Returns the remaining space in the packet that can be taken up by QUIC frames +378 /// +379 /// This leaves space in the datagram for the cryptographic tag that needs to be written +380 /// when the packet is finished. +381 pub(super) fn frame_space_remaining(&self) -> usize { +382 let max_offset = self.buf.datagram_max_offset() - self.tag_len; +383 max_offset.saturating_sub(self.buf.len()) +384 } +385 +386 pub(crate) fn require_padding(&mut self) { +387 self.sent_frames.requires_padding = true; +388 } +389 +390 pub(crate) fn retransmits_mut(&mut self) -> &mut Retransmits { +391 self.sent_frames.retransmits_mut() +392 } +393} +394 +395#[derive(Debug, Copy, Clone)] +396pub(super) enum PadDatagram { +397 /// Do not pad the datagram +398 No, +399 /// To a specific size +400 ToSize(u16), +401 /// Pad to the current MTU/segment size +402 /// +403 /// For the first datagram in a transmit the MTU is the same as the +404 /// [`TransmitBuf::segment_size`]. +405 ToSegmentSize, +406 /// Pad to [`MIN_INITIAL_SIZE`], the minimal QUIC MTU of 1200 bytes +407 ToMinMtu, +408} +409 +410impl std::ops::BitOrAssign for PadDatagram { +411 fn bitor_assign(&mut self, rhs: Self) { +412 *self = *self | rhs; +413 } +414} +415 +416impl std::ops::BitOr for PadDatagram { +417 type Output = Self; +418 +419 fn bitor(self, rhs: Self) -> Self::Output { +420 match (self, rhs) { +421 (Self::No, rhs) => rhs, +422 (Self::ToSize(size), Self::No) => Self::ToSize(size), +423 (Self::ToSize(a), Self::ToSize(b)) => Self::ToSize(a.max(b)), +424 (Self::ToSize(_), Self::ToSegmentSize) => Self::ToSegmentSize, +425 (Self::ToSize(_), Self::ToMinMtu) => Self::ToMinMtu, +426 (Self::ToSegmentSize, Self::No) => Self::ToSegmentSize, +427 (Self::ToSegmentSize, Self::ToSize(_)) => Self::ToSegmentSize, +428 (Self::ToSegmentSize, Self::ToSegmentSize) => Self::ToSegmentSize, +429 (Self::ToSegmentSize, Self::ToMinMtu) => Self::ToMinMtu, +430 (Self::ToMinMtu, _) => Self::ToMinMtu, +431 } +432 } +433} \ No newline at end of file diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/qlog.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/qlog.rs.html index fb087bc33..baaa06b38 100644 --- a/pr/323/docs/src/iroh_quinn_proto/connection/qlog.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/connection/qlog.rs.html @@ -39,1037 +39,1212 @@ 39use crate::{ 40 Connection, ConnectionId, FourTuple, Frame, Instant, PathId, 41 connection::{PathData, SentPacket, timer::Timer}, -42 frame::{EcnCounts, StreamMeta}, +42 frame::EncodableFrame, 43 packet::{Header, SpaceId}, -44 range_set::ArrayRangeSet, -45 transport_parameters::TransportParameters, -46}; -47#[cfg(feature = "qlog")] -48use crate::{ -49 QlogConfig, Side, TransportErrorCode, -50 connection::timer::{ConnTimer, PathTimer}, -51 frame::Close, -52}; -53 -54/// Shareable handle to a single qlog output stream -55#[cfg(feature = "qlog")] -56#[derive(Clone)] -57pub(crate) struct QlogStream(Arc<Mutex<QlogStreamer>>); -58 -59#[cfg(feature = "qlog")] -60impl QlogStream { -61 pub(crate) fn new( -62 config: QlogConfig, -63 initial_dst_cid: ConnectionId, -64 side: Side, -65 now: Instant, -66 ) -> Result<Self, qlog::Error> { -67 let vantage_point = VantagePoint { -68 name: None, -69 ty: match side { -70 Side::Client => qlog::VantagePointType::Client, -71 Side::Server => qlog::VantagePointType::Server, -72 }, -73 flow: None, -74 }; -75 -76 let common_fields = CommonFields { -77 group_id: Some(initial_dst_cid.to_string()), -78 ..Default::default() -79 }; -80 -81 let trace = qlog::TraceSeq::new( -82 config.title.clone(), -83 config.description.clone(), -84 Some(common_fields), -85 Some(vantage_point), -86 vec![], -87 ); -88 -89 let start_time = config.start_time.unwrap_or(now); -90 -91 let mut streamer = QlogStreamer::new( -92 config.title, -93 config.description, -94 start_time, -95 trace, -96 qlog::events::EventImportance::Extra, -97 config.writer, -98 ); -99 -100 streamer.start_log()?; -101 Ok(Self(Arc::new(Mutex::new(streamer)))) -102 } -103 -104 fn emit_event(&self, event: EventData, now: Instant) { -105 self.emit_event_with_tuple_id(event, now, None); -106 } -107 -108 fn emit_event_with_tuple_id( -109 &self, -110 event: EventData, -111 now: Instant, -112 network_path: Option<String>, -113 ) { -114 // Time will be overwritten by `add_event_with_instant` -115 let mut event = Event::with_time(0.0, event); -116 event.tuple = network_path; -117 let mut qlog_streamer = self.0.lock().unwrap(); -118 if let Err(e) = qlog_streamer.add_event_with_instant(event, now) { -119 warn!("could not emit qlog event: {e}"); -120 } -121 } -122} -123 -124/// A [`QlogStream`] that may be either dynamically disabled or compiled out entirely -125#[derive(Clone, Default)] -126pub(crate) struct QlogSink { -127 #[cfg(feature = "qlog")] -128 stream: Option<QlogStream>, -129} -130 -131impl QlogSink { -132 #[cfg(feature = "qlog")] -133 pub(crate) fn new( -134 config: QlogConfig, -135 initial_dst_cid: ConnectionId, -136 side: Side, -137 now: Instant, -138 ) -> Self { -139 let stream = QlogStream::new(config, initial_dst_cid, side, now) -140 .inspect_err(|err| warn!("failed to initialize qlog streamer: {err}")) -141 .ok(); -142 Self { stream } -143 } -144 -145 pub(crate) fn emit_connection_started( -146 &self, -147 now: Instant, -148 loc_cid: ConnectionId, -149 rem_cid: ConnectionId, -150 remote: SocketAddr, -151 local_ip: Option<IpAddr>, -152 transport_params: &TransportParameters, -153 ) { -154 #[cfg(feature = "qlog")] -155 { -156 let Some(stream) = self.stream.as_ref() else { -157 return; -158 }; -159 stream.emit_event( -160 EventData::ConnectionStarted(ConnectionStarted { -161 local: tuple_endpoint_info(local_ip, None, Some(loc_cid)), -162 remote: tuple_endpoint_info( -163 Some(remote.ip()), -164 Some(remote.port()), -165 Some(rem_cid), -166 ), -167 }), -168 now, -169 ); -170 -171 let params = transport_params.to_qlog(TransportInitiator::Local); -172 let event = EventData::ParametersSet(params); -173 stream.emit_event(event, now); -174 } -175 } -176 -177 pub(super) fn emit_recovery_metrics(&self, path_id: PathId, path: &mut PathData, now: Instant) { -178 #[cfg(feature = "qlog")] -179 { -180 let Some(stream) = self.stream.as_ref() else { -181 return; -182 }; -183 -184 let Some(metrics) = path.qlog_recovery_metrics(path_id) else { -185 return; -186 }; -187 -188 stream.emit_event(EventData::MetricsUpdated(metrics), now); -189 } -190 } -191 -192 pub(super) fn emit_packet_lost( -193 &self, -194 pn: u64, -195 info: &SentPacket, -196 loss_delay: Duration, -197 space: SpaceId, -198 now: Instant, -199 ) { -200 #[cfg(feature = "qlog")] -201 { -202 let Some(stream) = self.stream.as_ref() else { -203 return; -204 }; -205 -206 let event = PacketLost { -207 header: Some(PacketHeader { -208 packet_number: Some(pn), -209 packet_type: packet_type(space, false), -210 length: Some(info.size), -211 ..Default::default() -212 }), -213 frames: None, -214 trigger: Some( -215 match info.time_sent.saturating_duration_since(now) >= loss_delay { -216 true => PacketLostTrigger::TimeThreshold, -217 false => PacketLostTrigger::ReorderingThreshold, -218 }, -219 ), -220 is_mtu_probe_packet: None, -221 }; -222 -223 stream.emit_event(EventData::PacketLost(event), now); -224 } -225 } -226 -227 pub(super) fn emit_peer_transport_params_restored(&self, conn: &Connection, now: Instant) { -228 #[cfg(feature = "qlog")] -229 { -230 let Some(stream) = self.stream.as_ref() else { -231 return; -232 }; -233 let params = conn.peer_params.to_qlog_restored(); -234 let event = EventData::ParametersRestored(params); -235 stream.emit_event(event, now); -236 } -237 } -238 -239 pub(super) fn emit_peer_transport_params_received(&self, conn: &Connection, now: Instant) { -240 #[cfg(feature = "qlog")] -241 { -242 let Some(stream) = self.stream.as_ref() else { -243 return; -244 }; -245 let params = conn.peer_params.to_qlog(TransportInitiator::Remote); -246 let event = EventData::ParametersSet(params); -247 stream.emit_event(event, now); -248 } -249 } -250 -251 pub(super) fn emit_tuple_assigned(&self, path_id: PathId, tuple: FourTuple, now: Instant) { -252 #[cfg(feature = "qlog")] -253 { -254 let Some(stream) = self.stream.as_ref() else { -255 return; -256 }; -257 let tuple_id = fmt_tuple_id(path_id.as_u32() as u64); -258 let event = TupleAssigned { -259 tuple_id, -260 tuple_local: tuple -261 .local_ip -262 .map(|local_ip| tuple_endpoint_info(Some(local_ip), None, None)), -263 tuple_remote: Some(tuple_endpoint_info( -264 Some(tuple.remote.ip()), -265 Some(tuple.remote.port()), -266 None, -267 )), -268 }; -269 -270 stream.emit_event(EventData::TupleAssigned(event), now); -271 } -272 } -273 -274 pub(super) fn emit_packet_sent(&self, packet: QlogSentPacket, now: Instant) { -275 #[cfg(feature = "qlog")] -276 { -277 let Some(stream) = self.stream.as_ref() else { -278 return; -279 }; -280 let tuple_id = packet.inner.header.path_id.map(fmt_tuple_id); -281 stream.emit_event_with_tuple_id(EventData::PacketSent(packet.inner), now, tuple_id); -282 } -283 } -284 -285 pub(super) fn emit_packet_received(&self, packet: QlogRecvPacket, now: Instant) { -286 #[cfg(feature = "qlog")] -287 { -288 let Some(stream) = self.stream.as_ref() else { -289 return; -290 }; -291 let mut packet = packet; -292 packet.emit_padding(); -293 let tuple_id = packet.inner.header.path_id.map(fmt_tuple_id); -294 let event = packet.inner; -295 stream.emit_event_with_tuple_id(EventData::PacketReceived(event), now, tuple_id); -296 } -297 } -298 -299 /// Emits a timer event. -300 /// -301 /// This function is not public: Instead, create a [`QlogSinkWithTime`] via [`Self::with_time`] and use -302 /// its `emit_timer_` methods. -303 #[cfg(feature = "qlog")] -304 fn emit_timer(&self, timer: Timer, op: TimerOp, now: Instant) { -305 let Some(stream) = self.stream.as_ref() else { -306 return; -307 }; -308 -309 let timer_type: Option<TimerType> = match timer { -310 Timer::Conn(conn_timer) => match conn_timer { -311 ConnTimer::Idle => Some(QlogTimerType::IdleTimeout.into()), -312 ConnTimer::Close => Some(TimerType::custom("close")), -313 ConnTimer::KeyDiscard => Some(TimerType::custom("key_discard")), -314 ConnTimer::KeepAlive => Some(TimerType::custom("keep_alive")), -315 ConnTimer::PushNewCid => Some(TimerType::custom("push_new_cid")), -316 }, -317 Timer::PerPath(_, path_timer) => match path_timer { -318 PathTimer::LossDetection => Some(QlogTimerType::LossTimeout.into()), -319 PathTimer::PathIdle => Some(TimerType::custom("path_idle")), -320 PathTimer::PathValidation => Some(QlogTimerType::PathValidation.into()), -321 PathTimer::PathChallengeLost => Some(TimerType::custom("path_challenge_lost")), -322 PathTimer::PathOpen => Some(TimerType::custom("path_open")), -323 PathTimer::PathKeepAlive => Some(TimerType::custom("path_keep_alive")), -324 PathTimer::Pacing => Some(TimerType::custom("pacing")), -325 PathTimer::MaxAckDelay => Some(QlogTimerType::Ack.into()), -326 PathTimer::DiscardPath => Some(TimerType::custom("discard_path")), -327 }, -328 }; -329 -330 let Some(timer_type) = timer_type else { -331 return; -332 }; -333 -334 let delta = match op { -335 TimerOp::Set(instant) => instant -336 .checked_duration_since(now) -337 .map(|dur| dur.as_secs_f32() * 1000.), -338 _ => None, -339 }; -340 let path_id = match timer { -341 Timer::Conn(_) => None, -342 Timer::PerPath(path_id, _) => Some(path_id.as_u32() as u64), -343 }; -344 -345 let event_type = match op { -346 TimerOp::Set(_) => TimerEventType::Set, -347 TimerOp::Expire => TimerEventType::Expired, -348 TimerOp::Cancelled => TimerEventType::Cancelled, -349 }; -350 -351 let event = TimerUpdated { -352 path_id, -353 timer_type: Some(timer_type), -354 timer_id: None, -355 packet_number_space: None, -356 event_type, -357 delta, -358 }; -359 stream.emit_event(EventData::TimerUpdated(event), now); -360 } -361 -362 /// Returns a [`QlogSinkWithTime`] that passes along a `now` timestamp. -363 /// -364 /// This may be used if you want to pass a [`QlogSink`] downwards together with the current -365 /// `now` timestamp, to not have to pass the latter separately as an additional argument just -366 /// for qlog support. -367 pub(super) fn with_time(&self, now: Instant) -> QlogSinkWithTime<'_> { -368 #[cfg(feature = "qlog")] -369 let s = QlogSinkWithTime { sink: self, now }; -370 #[cfg(not(feature = "qlog"))] -371 let s = QlogSinkWithTime { -372 _phantom: PhantomData, -373 }; -374 s -375 } -376} -377 -378/// A [`QlogSink`] with a `now` timestamp. -379#[derive(Clone)] -380pub(super) struct QlogSinkWithTime<'a> { -381 #[cfg(feature = "qlog")] -382 sink: &'a QlogSink, -383 #[cfg(feature = "qlog")] -384 now: Instant, -385 #[cfg(not(feature = "qlog"))] -386 _phantom: PhantomData<&'a ()>, -387} -388 -389impl<'a> QlogSinkWithTime<'a> { -390 pub(super) fn emit_timer_stop(&self, timer: Timer) { -391 #[cfg(feature = "qlog")] -392 self.sink.emit_timer(timer, TimerOp::Cancelled, self.now) -393 } -394 -395 pub(super) fn emit_timer_set(&self, timer: Timer, expire_at: Instant) { -396 #[cfg(feature = "qlog")] -397 self.sink -398 .emit_timer(timer, TimerOp::Set(expire_at), self.now) -399 } -400 -401 pub(super) fn emit_timer_expire(&self, timer: Timer) { -402 #[cfg(feature = "qlog")] -403 self.sink.emit_timer(timer, TimerOp::Expire, self.now) -404 } -405} -406 -407#[cfg(feature = "qlog")] -408enum TimerOp { -409 Set(Instant), -410 Expire, -411 Cancelled, -412} -413 -414/// Info about a sent packet. Zero-sized struct if `qlog` feature is not enabled. -415#[derive(Default)] -416pub(crate) struct QlogSentPacket { -417 #[cfg(feature = "qlog")] -418 inner: PacketSent, -419} -420 -421impl QlogSentPacket { -422 /// Sets data from the packet header. -423 pub(crate) fn header( -424 &mut self, -425 header: &Header, -426 pn: Option<u64>, -427 space: SpaceId, -428 is_0rtt: bool, -429 path_id: PathId, -430 ) { -431 #[cfg(feature = "qlog")] -432 { -433 self.inner.header.scid = header.src_cid().map(stringify_cid); -434 self.inner.header.dcid = Some(stringify_cid(header.dst_cid())); -435 self.inner.header.packet_number = pn; -436 self.inner.header.packet_type = packet_type(space, is_0rtt); -437 self.inner.header.path_id = Some(path_id.as_u32() as u64); -438 } -439 } -440 -441 /// Adds a frame by pushing a [`Frame`]. -442 pub(crate) fn frame(&mut self, frame: &Frame) { -443 #[cfg(feature = "qlog")] -444 self.frame_raw(frame.to_qlog()) -445 } -446 -447 /// Adds a PADDING frame. -448 /// -449 /// This is a no-op if the `qlog` feature is not enabled. -450 pub(crate) fn frame_padding(&mut self, count: usize) { -451 #[cfg(feature = "qlog")] -452 self.frame_raw(QuicFrame::Padding { -453 raw: Some(RawInfo { -454 length: Some(count as u64), -455 payload_length: Some(count as u64), -456 data: None, -457 }), -458 }); -459 } -460 -461 /// Adds an ACK frame. -462 /// -463 /// This is a no-op if the `qlog` feature is not enabled. -464 pub(crate) fn frame_ack( -465 &mut self, -466 delay: u64, -467 ranges: &ArrayRangeSet, -468 ecn: Option<&EcnCounts>, -469 ) { -470 #[cfg(feature = "qlog")] -471 self.frame_raw(QuicFrame::Ack { -472 ack_delay: Some(delay as f32), -473 acked_ranges: Some(AckedRanges::Double( -474 ranges -475 .iter() -476 .map(|range| (range.start, range.end)) -477 .collect(), -478 )), -479 ect1: ecn.map(|e| e.ect1), -480 ect0: ecn.map(|e| e.ect0), -481 ce: ecn.map(|e| e.ce), -482 raw: None, -483 }); -484 } -485 -486 /// Adds a PATH_ACK frame. +44 transport_parameters::TransportParameters, +45}; +46#[cfg(feature = "qlog")] +47use crate::{ +48 QlogConfig, Side, TransportErrorCode, +49 connection::timer::{ConnTimer, PathTimer}, +50 frame, +51}; +52 +53/// Shareable handle to a single qlog output stream +54#[cfg(feature = "qlog")] +55#[derive(Clone)] +56pub(crate) struct QlogStream(Arc<Mutex<QlogStreamer>>); +57 +58#[cfg(feature = "qlog")] +59impl QlogStream { +60 pub(crate) fn new( +61 config: QlogConfig, +62 initial_dst_cid: ConnectionId, +63 side: Side, +64 now: Instant, +65 ) -> Result<Self, qlog::Error> { +66 let vantage_point = VantagePoint { +67 name: None, +68 ty: match side { +69 Side::Client => qlog::VantagePointType::Client, +70 Side::Server => qlog::VantagePointType::Server, +71 }, +72 flow: None, +73 }; +74 +75 let common_fields = CommonFields { +76 group_id: Some(initial_dst_cid.to_string()), +77 ..Default::default() +78 }; +79 +80 let trace = qlog::TraceSeq::new( +81 config.title.clone(), +82 config.description.clone(), +83 Some(common_fields), +84 Some(vantage_point), +85 vec![], +86 ); +87 +88 let start_time = config.start_time.unwrap_or(now); +89 +90 let mut streamer = QlogStreamer::new( +91 config.title, +92 config.description, +93 start_time, +94 trace, +95 qlog::events::EventImportance::Extra, +96 config.writer, +97 ); +98 +99 streamer.start_log()?; +100 Ok(Self(Arc::new(Mutex::new(streamer)))) +101 } +102 +103 fn emit_event(&self, event: EventData, now: Instant) { +104 self.emit_event_with_tuple_id(event, now, None); +105 } +106 +107 fn emit_event_with_tuple_id( +108 &self, +109 event: EventData, +110 now: Instant, +111 network_path: Option<String>, +112 ) { +113 // Time will be overwritten by `add_event_with_instant` +114 let mut event = Event::with_time(0.0, event); +115 event.tuple = network_path; +116 let mut qlog_streamer = self.0.lock().unwrap(); +117 if let Err(e) = qlog_streamer.add_event_with_instant(event, now) { +118 warn!("could not emit qlog event: {e}"); +119 } +120 } +121} +122 +123/// A [`QlogStream`] that may be either dynamically disabled or compiled out entirely +124#[derive(Clone, Default)] +125pub(crate) struct QlogSink { +126 #[cfg(feature = "qlog")] +127 stream: Option<QlogStream>, +128} +129 +130impl QlogSink { +131 #[cfg(feature = "qlog")] +132 pub(crate) fn new( +133 config: QlogConfig, +134 initial_dst_cid: ConnectionId, +135 side: Side, +136 now: Instant, +137 ) -> Self { +138 let stream = QlogStream::new(config, initial_dst_cid, side, now) +139 .inspect_err(|err| warn!("failed to initialize qlog streamer: {err}")) +140 .ok(); +141 Self { stream } +142 } +143 +144 pub(crate) fn emit_connection_started( +145 &self, +146 now: Instant, +147 loc_cid: ConnectionId, +148 rem_cid: ConnectionId, +149 remote: SocketAddr, +150 local_ip: Option<IpAddr>, +151 transport_params: &TransportParameters, +152 ) { +153 #[cfg(feature = "qlog")] +154 { +155 let Some(stream) = self.stream.as_ref() else { +156 return; +157 }; +158 stream.emit_event( +159 EventData::ConnectionStarted(ConnectionStarted { +160 local: tuple_endpoint_info(local_ip, None, Some(loc_cid)), +161 remote: tuple_endpoint_info( +162 Some(remote.ip()), +163 Some(remote.port()), +164 Some(rem_cid), +165 ), +166 }), +167 now, +168 ); +169 +170 let params = transport_params.to_qlog(TransportInitiator::Local); +171 let event = EventData::ParametersSet(params); +172 stream.emit_event(event, now); +173 } +174 } +175 +176 pub(super) fn emit_recovery_metrics(&self, path_id: PathId, path: &mut PathData, now: Instant) { +177 #[cfg(feature = "qlog")] +178 { +179 let Some(stream) = self.stream.as_ref() else { +180 return; +181 }; +182 +183 let Some(metrics) = path.qlog_recovery_metrics(path_id) else { +184 return; +185 }; +186 +187 stream.emit_event(EventData::MetricsUpdated(metrics), now); +188 } +189 } +190 +191 pub(super) fn emit_packet_lost( +192 &self, +193 pn: u64, +194 info: &SentPacket, +195 loss_delay: Duration, +196 space: SpaceId, +197 now: Instant, +198 ) { +199 #[cfg(feature = "qlog")] +200 { +201 let Some(stream) = self.stream.as_ref() else { +202 return; +203 }; +204 +205 let event = PacketLost { +206 header: Some(PacketHeader { +207 packet_number: Some(pn), +208 packet_type: packet_type(space, false), +209 length: Some(info.size), +210 ..Default::default() +211 }), +212 frames: None, +213 trigger: Some( +214 match info.time_sent.saturating_duration_since(now) >= loss_delay { +215 true => PacketLostTrigger::TimeThreshold, +216 false => PacketLostTrigger::ReorderingThreshold, +217 }, +218 ), +219 is_mtu_probe_packet: None, +220 }; +221 +222 stream.emit_event(EventData::PacketLost(event), now); +223 } +224 } +225 +226 pub(super) fn emit_peer_transport_params_restored(&self, conn: &Connection, now: Instant) { +227 #[cfg(feature = "qlog")] +228 { +229 let Some(stream) = self.stream.as_ref() else { +230 return; +231 }; +232 let params = conn.peer_params.to_qlog_restored(); +233 let event = EventData::ParametersRestored(params); +234 stream.emit_event(event, now); +235 } +236 } +237 +238 pub(super) fn emit_peer_transport_params_received(&self, conn: &Connection, now: Instant) { +239 #[cfg(feature = "qlog")] +240 { +241 let Some(stream) = self.stream.as_ref() else { +242 return; +243 }; +244 let params = conn.peer_params.to_qlog(TransportInitiator::Remote); +245 let event = EventData::ParametersSet(params); +246 stream.emit_event(event, now); +247 } +248 } +249 +250 pub(super) fn emit_tuple_assigned(&self, path_id: PathId, tuple: FourTuple, now: Instant) { +251 #[cfg(feature = "qlog")] +252 { +253 let Some(stream) = self.stream.as_ref() else { +254 return; +255 }; +256 let tuple_id = fmt_tuple_id(path_id.as_u32() as u64); +257 let event = TupleAssigned { +258 tuple_id, +259 tuple_local: tuple +260 .local_ip +261 .map(|local_ip| tuple_endpoint_info(Some(local_ip), None, None)), +262 tuple_remote: Some(tuple_endpoint_info( +263 Some(tuple.remote.ip()), +264 Some(tuple.remote.port()), +265 None, +266 )), +267 }; +268 +269 stream.emit_event(EventData::TupleAssigned(event), now); +270 } +271 } +272 +273 pub(super) fn emit_packet_sent(&self, packet: QlogSentPacket, now: Instant) { +274 #[cfg(feature = "qlog")] +275 { +276 let Some(stream) = self.stream.as_ref() else { +277 return; +278 }; +279 let tuple_id = packet.inner.header.path_id.map(fmt_tuple_id); +280 stream.emit_event_with_tuple_id(EventData::PacketSent(packet.inner), now, tuple_id); +281 } +282 } +283 +284 pub(super) fn emit_packet_received(&self, packet: QlogRecvPacket, now: Instant) { +285 #[cfg(feature = "qlog")] +286 { +287 let Some(stream) = self.stream.as_ref() else { +288 return; +289 }; +290 let mut packet = packet; +291 packet.emit_padding(); +292 let tuple_id = packet.inner.header.path_id.map(fmt_tuple_id); +293 let event = packet.inner; +294 stream.emit_event_with_tuple_id(EventData::PacketReceived(event), now, tuple_id); +295 } +296 } +297 +298 /// Emits a timer event. +299 /// +300 /// This function is not public: Instead, create a [`QlogSinkWithTime`] via [`Self::with_time`] and use +301 /// its `emit_timer_` methods. +302 #[cfg(feature = "qlog")] +303 fn emit_timer(&self, timer: Timer, op: TimerOp, now: Instant) { +304 let Some(stream) = self.stream.as_ref() else { +305 return; +306 }; +307 +308 let timer_type: Option<TimerType> = match timer { +309 Timer::Conn(conn_timer) => match conn_timer { +310 ConnTimer::Idle => Some(QlogTimerType::IdleTimeout.into()), +311 ConnTimer::Close => Some(TimerType::custom("close")), +312 ConnTimer::KeyDiscard => Some(TimerType::custom("key_discard")), +313 ConnTimer::KeepAlive => Some(TimerType::custom("keep_alive")), +314 ConnTimer::PushNewCid => Some(TimerType::custom("push_new_cid")), +315 }, +316 Timer::PerPath(_, path_timer) => match path_timer { +317 PathTimer::LossDetection => Some(QlogTimerType::LossTimeout.into()), +318 PathTimer::PathIdle => Some(TimerType::custom("path_idle")), +319 PathTimer::PathValidation => Some(QlogTimerType::PathValidation.into()), +320 PathTimer::PathChallengeLost => Some(TimerType::custom("path_challenge_lost")), +321 PathTimer::PathOpen => Some(TimerType::custom("path_open")), +322 PathTimer::PathKeepAlive => Some(TimerType::custom("path_keep_alive")), +323 PathTimer::Pacing => Some(TimerType::custom("pacing")), +324 PathTimer::MaxAckDelay => Some(QlogTimerType::Ack.into()), +325 PathTimer::DiscardPath => Some(TimerType::custom("discard_path")), +326 }, +327 }; +328 +329 let Some(timer_type) = timer_type else { +330 return; +331 }; +332 +333 let delta = match op { +334 TimerOp::Set(instant) => instant +335 .checked_duration_since(now) +336 .map(|dur| dur.as_secs_f32() * 1000.), +337 _ => None, +338 }; +339 let path_id = match timer { +340 Timer::Conn(_) => None, +341 Timer::PerPath(path_id, _) => Some(path_id.as_u32() as u64), +342 }; +343 +344 let event_type = match op { +345 TimerOp::Set(_) => TimerEventType::Set, +346 TimerOp::Expire => TimerEventType::Expired, +347 TimerOp::Cancelled => TimerEventType::Cancelled, +348 }; +349 +350 let event = TimerUpdated { +351 path_id, +352 timer_type: Some(timer_type), +353 timer_id: None, +354 packet_number_space: None, +355 event_type, +356 delta, +357 }; +358 stream.emit_event(EventData::TimerUpdated(event), now); +359 } +360 +361 /// Returns a [`QlogSinkWithTime`] that passes along a `now` timestamp. +362 /// +363 /// This may be used if you want to pass a [`QlogSink`] downwards together with the current +364 /// `now` timestamp, to not have to pass the latter separately as an additional argument just +365 /// for qlog support. +366 pub(super) fn with_time(&self, now: Instant) -> QlogSinkWithTime<'_> { +367 #[cfg(feature = "qlog")] +368 let s = QlogSinkWithTime { sink: self, now }; +369 #[cfg(not(feature = "qlog"))] +370 let s = QlogSinkWithTime { +371 _phantom: PhantomData, +372 }; +373 s +374 } +375} +376 +377/// A [`QlogSink`] with a `now` timestamp. +378#[derive(Clone)] +379pub(super) struct QlogSinkWithTime<'a> { +380 #[cfg(feature = "qlog")] +381 sink: &'a QlogSink, +382 #[cfg(feature = "qlog")] +383 now: Instant, +384 #[cfg(not(feature = "qlog"))] +385 _phantom: PhantomData<&'a ()>, +386} +387 +388impl<'a> QlogSinkWithTime<'a> { +389 pub(super) fn emit_timer_stop(&self, timer: Timer) { +390 #[cfg(feature = "qlog")] +391 self.sink.emit_timer(timer, TimerOp::Cancelled, self.now) +392 } +393 +394 pub(super) fn emit_timer_set(&self, timer: Timer, expire_at: Instant) { +395 #[cfg(feature = "qlog")] +396 self.sink +397 .emit_timer(timer, TimerOp::Set(expire_at), self.now) +398 } +399 +400 pub(super) fn emit_timer_expire(&self, timer: Timer) { +401 #[cfg(feature = "qlog")] +402 self.sink.emit_timer(timer, TimerOp::Expire, self.now) +403 } +404} +405 +406#[cfg(feature = "qlog")] +407enum TimerOp { +408 Set(Instant), +409 Expire, +410 Cancelled, +411} +412 +413/// Info about a sent packet. Zero-sized struct if `qlog` feature is not enabled. +414#[derive(Default)] +415pub(crate) struct QlogSentPacket { +416 #[cfg(feature = "qlog")] +417 inner: PacketSent, +418} +419 +420impl QlogSentPacket { +421 /// Sets data from the packet header. +422 pub(crate) fn header( +423 &mut self, +424 header: &Header, +425 pn: Option<u64>, +426 space: SpaceId, +427 is_0rtt: bool, +428 path_id: PathId, +429 ) { +430 #[cfg(feature = "qlog")] +431 { +432 self.inner.header.scid = header.src_cid().map(stringify_cid); +433 self.inner.header.dcid = Some(stringify_cid(header.dst_cid())); +434 self.inner.header.packet_number = pn; +435 self.inner.header.packet_type = packet_type(space, is_0rtt); +436 self.inner.header.path_id = Some(path_id.as_u32() as u64); +437 } +438 } +439 +440 /// Adds a PADDING frame. +441 /// +442 /// This is a no-op if the `qlog` feature is not enabled. +443 pub(crate) fn frame_padding(&mut self, count: usize) { +444 #[cfg(feature = "qlog")] +445 self.frame_raw(QuicFrame::Padding { +446 raw: Some(RawInfo { +447 length: Some(count as u64), +448 payload_length: Some(count as u64), +449 data: None, +450 }), +451 }); +452 } +453 +454 /// Adds a frame by pushing a [`QuicFrame`]. +455 /// +456 /// This function is only available if the `qlog` feature is enabled, because constructing a [`QuicFrame`] may involve +457 /// calculations which shouldn't be performed if the `qlog` feature is disabled. +458 #[cfg(feature = "qlog")] +459 fn frame_raw(&mut self, frame: QuicFrame) { +460 self.inner.frames.get_or_insert_default().push(frame); +461 } +462 +463 /// Finalizes the packet by setting the final packet length (after encryption). +464 pub(super) fn finalize(&mut self, len: usize) { +465 #[cfg(feature = "qlog")] +466 { +467 self.inner.header.length = Some(len as u16); +468 } +469 } +470 +471 pub(crate) fn record<'a>(&mut self, frame: &EncodableFrame<'a>) { +472 #[cfg(feature = "qlog")] +473 self.frame_raw(frame.to_qlog()); +474 } +475} +476 +477/// Info about a received packet. Zero-sized struct if `qlog` feature is not enabled. +478pub(crate) struct QlogRecvPacket { +479 #[cfg(feature = "qlog")] +480 inner: PacketReceived, +481 #[cfg(feature = "qlog")] +482 padding: usize, +483} +484 +485impl QlogRecvPacket { +486 /// Creates a new [`QlogRecvPacket`]. Noop if `qlog` feature is not enabled. 487 /// -488 /// This is a no-op if the `qlog` feature is not enabled. -489 pub(crate) fn frame_path_ack( -490 &mut self, -491 path_id: PathId, -492 delay: u64, -493 ranges: &ArrayRangeSet, -494 ecn: Option<&EcnCounts>, -495 ) { -496 #[cfg(feature = "qlog")] -497 self.frame_raw(QuicFrame::PathAck { -498 path_id: path_id.as_u32() as u64, -499 ack_delay: Some(delay as f32), -500 acked_ranges: Some(AckedRanges::Double( -501 ranges -502 .iter() -503 .map(|range| (range.start, range.end)) -504 .collect(), -505 )), -506 ect1: ecn.map(|e| e.ect1), -507 ect0: ecn.map(|e| e.ect0), -508 ce: ecn.map(|e| e.ce), -509 raw: None, -510 }); -511 } -512 -513 /// Adds a DATAGRAM frame. -514 /// -515 /// This is a no-op if the `qlog` feature is not enabled. -516 pub(crate) fn frame_datagram(&mut self, len: u64) { -517 #[cfg(feature = "qlog")] -518 self.frame_raw(QuicFrame::Datagram { -519 raw: Some(RawInfo { -520 length: Some(len), -521 ..Default::default() -522 }), -523 }); -524 } -525 -526 /// Adds a STREAM frame. -527 /// -528 /// This is a no-op if the `qlog` feature is not enabled. -529 pub(crate) fn frame_stream(&mut self, meta: &StreamMeta) { -530 #[cfg(feature = "qlog")] -531 self.frame_raw(QuicFrame::Stream { -532 stream_id: meta.id.into(), -533 offset: Some(meta.offsets.start), -534 fin: Some(meta.fin), -535 raw: Some(RawInfo { -536 length: Some(meta.offsets.end - meta.offsets.start), -537 ..Default::default() -538 }), -539 }); -540 } -541 -542 /// Adds a frame by pushing a [`QuicFrame`]. -543 /// -544 /// This function is only available if the `qlog` feature is enabled, because constructing a [`QuicFrame`] may involve -545 /// calculations which shouldn't be performed if the `qlog` feature is disabled. -546 #[cfg(feature = "qlog")] -547 fn frame_raw(&mut self, frame: QuicFrame) { -548 self.inner.frames.get_or_insert_default().push(frame); -549 } -550 -551 /// Finalizes the packet by setting the final packet length (after encryption). -552 pub(super) fn finalize(&mut self, len: usize) { -553 #[cfg(feature = "qlog")] -554 { -555 self.inner.header.length = Some(len as u16); -556 } -557 } -558} -559 -560/// Info about a received packet. Zero-sized struct if `qlog` feature is not enabled. -561pub(crate) struct QlogRecvPacket { -562 #[cfg(feature = "qlog")] -563 inner: PacketReceived, -564 #[cfg(feature = "qlog")] -565 padding: usize, -566} -567 -568impl QlogRecvPacket { -569 /// Creates a new [`QlogRecvPacket`]. Noop if `qlog` feature is not enabled. -570 /// -571 /// `len` is the packet's full length (before decryption). -572 pub(crate) fn new(len: usize) -> Self { -573 #[cfg(not(feature = "qlog"))] -574 let this = Self {}; -575 -576 #[cfg(feature = "qlog")] -577 let this = { -578 let mut this = Self { -579 inner: Default::default(), -580 padding: 0, -581 }; -582 this.inner.header.length = Some(len as u16); -583 this -584 }; -585 -586 this -587 } -588 -589 /// Adds info from the packet header. -590 pub(crate) fn header(&mut self, header: &Header, pn: Option<u64>, path_id: PathId) { -591 #[cfg(feature = "qlog")] -592 { -593 let is_0rtt = !header.is_1rtt(); -594 self.inner.header.scid = header.src_cid().map(stringify_cid); -595 self.inner.header.dcid = Some(stringify_cid(header.dst_cid())); -596 self.inner.header.packet_number = pn; -597 self.inner.header.packet_type = packet_type(header.space(), is_0rtt); -598 self.inner.header.path_id = Some(path_id.as_u32() as u64); -599 } -600 } -601 -602 /// Adds a frame. -603 pub(crate) fn frame(&mut self, frame: &Frame) { -604 #[cfg(feature = "qlog")] -605 { -606 if matches!(frame, crate::Frame::Padding) { -607 self.padding += 1; -608 } else { -609 self.emit_padding(); -610 self.inner -611 .frames -612 .get_or_insert_default() -613 .push(frame.to_qlog()) -614 } -615 } -616 } -617 -618 #[cfg(feature = "qlog")] -619 fn emit_padding(&mut self) { -620 if self.padding > 0 { -621 self.inner -622 .frames -623 .get_or_insert_default() -624 .push(QuicFrame::Padding { -625 raw: Some(RawInfo { -626 length: Some(self.padding as u64), -627 payload_length: Some(self.padding as u64), -628 data: None, -629 }), -630 }); -631 self.padding = 0; -632 } -633 } -634} -635 -636#[cfg(feature = "qlog")] -637impl Frame { -638 /// Converts a [`crate::Frame`] into a [`QuicFrame`]. -639 pub(crate) fn to_qlog(&self) -> QuicFrame { -640 match self { -641 Self::Padding => QuicFrame::Padding { -642 raw: Some(RawInfo { -643 length: None, -644 payload_length: Some(1), -645 data: None, -646 }), -647 }, -648 Self::Ping => QuicFrame::Ping { raw: None }, -649 Self::Ack(f) => QuicFrame::Ack { -650 ack_delay: Some(f.delay as f32), -651 acked_ranges: Some(AckedRanges::Double( -652 f.iter() -653 .map(|range| (*range.start(), *range.end())) -654 .collect(), -655 )), -656 ect1: f.ecn.as_ref().map(|e| e.ect1), -657 ect0: f.ecn.as_ref().map(|e| e.ect0), -658 ce: f.ecn.as_ref().map(|e| e.ce), -659 raw: None, -660 }, -661 Self::ResetStream(f) => QuicFrame::ResetStream { -662 stream_id: f.id.into(), -663 error_code: Some(f.error_code.into_inner()), -664 final_size: f.final_offset.into(), -665 error: ApplicationError::Unknown, -666 raw: None, -667 }, -668 Self::StopSending(f) => QuicFrame::StopSending { -669 stream_id: f.id.into(), -670 error_code: Some(f.error_code.into_inner()), -671 error: ApplicationError::Unknown, -672 raw: None, -673 }, -674 Self::Crypto(f) => QuicFrame::Crypto { -675 offset: f.offset, -676 raw: Some(RawInfo { -677 length: Some(f.data.len() as u64), -678 ..Default::default() -679 }), -680 }, -681 Self::NewToken(f) => QuicFrame::NewToken { -682 token: qlog::Token { -683 ty: Some(TokenType::Retry), -684 raw: Some(RawInfo { -685 data: HexSlice::maybe_string(Some(&f.token)), -686 length: Some(f.token.len() as u64), -687 payload_length: None, -688 }), -689 details: None, -690 }, -691 raw: None, -692 }, -693 Self::Stream(s) => QuicFrame::Stream { -694 stream_id: s.id.into(), -695 offset: Some(s.offset), -696 fin: Some(s.fin), -697 raw: Some(RawInfo { -698 length: Some(s.data.len() as u64), -699 ..Default::default() -700 }), -701 }, -702 Self::MaxData(v) => QuicFrame::MaxData { -703 maximum: (*v).into(), -704 raw: None, -705 }, -706 Self::MaxStreamData { id, offset } => QuicFrame::MaxStreamData { -707 stream_id: (*id).into(), -708 maximum: *offset, -709 raw: None, -710 }, -711 Self::MaxStreams { dir, count } => QuicFrame::MaxStreams { -712 maximum: *count, -713 stream_type: (*dir).into(), -714 raw: None, -715 }, -716 Self::DataBlocked { offset } => QuicFrame::DataBlocked { -717 limit: *offset, -718 raw: None, -719 }, -720 Self::StreamDataBlocked { id, offset } => QuicFrame::StreamDataBlocked { -721 stream_id: (*id).into(), -722 limit: *offset, -723 raw: None, -724 }, -725 Self::StreamsBlocked { dir, limit } => QuicFrame::StreamsBlocked { -726 stream_type: (*dir).into(), -727 limit: *limit, -728 raw: None, -729 }, -730 Self::NewConnectionId(f) => QuicFrame::NewConnectionId { -731 sequence_number: f.sequence, -732 retire_prior_to: f.retire_prior_to, -733 connection_id_length: Some(f.id.len() as u8), -734 connection_id: f.id.to_string(), -735 stateless_reset_token: Some(f.reset_token.to_string()), -736 raw: None, -737 }, -738 Self::RetireConnectionId(f) => QuicFrame::RetireConnectionId { -739 sequence_number: f.sequence, -740 raw: None, -741 }, -742 Self::PathChallenge(token) => QuicFrame::PathChallenge { -743 data: Some(token.to_string()), -744 raw: None, -745 }, -746 Self::PathResponse(token) => QuicFrame::PathResponse { -747 data: Some(token.to_string()), -748 raw: None, -749 }, -750 Self::Close(close) => match close { -751 Close::Connection(f) => { -752 let (error, error_code) = transport_error(f.error_code); -753 let error = error.map(|transport_error| { -754 ConnectionClosedFrameError::TransportError(transport_error) -755 }); -756 QuicFrame::ConnectionClose { -757 error_space: Some(ErrorSpace::TransportError), -758 error, -759 error_code, -760 reason: String::from_utf8(f.reason.to_vec()).ok(), -761 reason_bytes: None, -762 trigger_frame_type: None, -763 } -764 } -765 Close::Application(f) => QuicFrame::ConnectionClose { -766 error_space: Some(ErrorSpace::ApplicationError), -767 error: None, -768 error_code: Some(f.error_code.into_inner()), -769 reason: String::from_utf8(f.reason.to_vec()).ok(), -770 reason_bytes: None, -771 trigger_frame_type: None, -772 }, -773 }, -774 Self::Datagram(d) => QuicFrame::Datagram { -775 raw: Some(RawInfo { -776 length: Some(d.data.len() as u64), -777 ..Default::default() -778 }), -779 }, -780 Self::HandshakeDone => QuicFrame::HandshakeDone { raw: None }, -781 Self::PathAck(ack) => QuicFrame::PathAck { -782 path_id: ack.path_id.as_u32().into(), -783 ack_delay: Some(ack.delay as f32), -784 ect1: ack.ecn.as_ref().map(|e| e.ect1), -785 ect0: ack.ecn.as_ref().map(|e| e.ect0), -786 ce: ack.ecn.as_ref().map(|e| e.ce), -787 raw: None, -788 acked_ranges: Some(AckedRanges::Double( -789 ack.into_iter() -790 .map(|range| (*range.start(), *range.end())) -791 .collect(), -792 )), -793 }, -794 Self::PathAbandon(frame) => QuicFrame::PathAbandon { -795 path_id: frame.path_id.as_u32().into(), -796 error_code: frame.error_code.into(), -797 raw: None, -798 }, -799 Self::PathStatusAvailable(frame) => QuicFrame::PathStatusAvailable { -800 path_id: frame.path_id.as_u32().into(), -801 path_status_sequence_number: frame.status_seq_no.into(), -802 raw: None, -803 }, -804 Self::PathStatusBackup(frame) => QuicFrame::PathStatusBackup { -805 path_id: frame.path_id.as_u32().into(), -806 path_status_sequence_number: frame.status_seq_no.into(), -807 raw: None, -808 }, -809 Self::PathsBlocked(frame) => QuicFrame::PathsBlocked { -810 maximum_path_id: frame.0.as_u32().into(), -811 raw: None, -812 }, -813 Self::PathCidsBlocked(frame) => QuicFrame::PathCidsBlocked { -814 path_id: frame.path_id.as_u32().into(), -815 next_sequence_number: frame.next_seq.into(), -816 raw: None, -817 }, -818 Self::MaxPathId(id) => QuicFrame::MaxPathId { -819 maximum_path_id: id.0.as_u32().into(), -820 raw: None, -821 }, -822 Self::AckFrequency(f) => QuicFrame::AckFrequency { -823 sequence_number: f.sequence.into_inner(), -824 ack_eliciting_threshold: f.ack_eliciting_threshold.into_inner(), -825 requested_max_ack_delay: f.request_max_ack_delay.into_inner(), -826 reordering_threshold: f.reordering_threshold.into_inner(), -827 raw: None, -828 }, -829 Self::ImmediateAck => QuicFrame::ImmediateAck { raw: None }, -830 Self::ObservedAddr(f) => QuicFrame::ObservedAddress { -831 sequence_number: f.seq_no.into_inner(), -832 ip_v4: match f.ip { -833 IpAddr::V4(ipv4_addr) => Some(ipv4_addr.to_string()), -834 IpAddr::V6(ipv6_addr) => None, -835 }, -836 ip_v6: match f.ip { -837 IpAddr::V4(ipv4_addr) => None, -838 IpAddr::V6(ipv6_addr) => Some(ipv6_addr.to_string()), -839 }, -840 port: f.port, -841 raw: None, -842 }, -843 Self::AddAddress(f) => QuicFrame::AddAddress { -844 sequence_number: f.seq_no.into_inner(), -845 ip_v4: match f.ip { -846 IpAddr::V4(ipv4_addr) => Some(ipv4_addr.to_string()), -847 IpAddr::V6(ipv6_addr) => None, -848 }, -849 ip_v6: match f.ip { -850 IpAddr::V4(ipv4_addr) => None, -851 IpAddr::V6(ipv6_addr) => Some(ipv6_addr.to_string()), -852 }, -853 port: f.port, -854 }, -855 Self::ReachOut(f) => QuicFrame::ReachOut { -856 round: f.round.into_inner(), -857 ip_v4: match f.ip { -858 IpAddr::V4(ipv4_addr) => Some(ipv4_addr.to_string()), -859 IpAddr::V6(ipv6_addr) => None, -860 }, -861 ip_v6: match f.ip { -862 IpAddr::V4(ipv4_addr) => None, -863 IpAddr::V6(ipv6_addr) => Some(ipv6_addr.to_string()), -864 }, -865 port: f.port, -866 }, -867 Self::RemoveAddress(f) => QuicFrame::RemoveAddress { -868 sequence_number: f.seq_no.into_inner(), -869 }, -870 } -871 } -872} -873 -874#[cfg(feature = "qlog")] -875impl From<crate::Dir> for StreamType { -876 fn from(value: crate::Dir) -> Self { -877 match value { -878 crate::Dir::Bi => Self::Bidirectional, -879 crate::Dir::Uni => Self::Unidirectional, -880 } -881 } -882} -883 -884#[cfg(feature = "qlog")] -885fn packet_type(space: SpaceId, is_0rtt: bool) -> PacketType { -886 match space { -887 SpaceId::Initial => PacketType::Initial, -888 SpaceId::Handshake => PacketType::Handshake, -889 SpaceId::Data if is_0rtt => PacketType::ZeroRtt, -890 SpaceId::Data => PacketType::OneRtt, -891 } -892} -893 -894#[cfg(feature = "qlog")] -895fn stringify_cid(cid: ConnectionId) -> String { -896 format!("{cid}") -897} -898 -899#[cfg(feature = "qlog")] -900fn tuple_endpoint_info( -901 ip: Option<IpAddr>, -902 port: Option<u16>, -903 cid: Option<ConnectionId>, -904) -> TupleEndpointInfo { -905 let (ip_v4, port_v4, ip_v6, port_v6) = match ip { -906 Some(addr) => match addr { -907 IpAddr::V4(ipv4_addr) => (Some(ipv4_addr.to_string()), port, None, None), -908 IpAddr::V6(ipv6_addr) => (None, None, Some(ipv6_addr.to_string()), port), -909 }, -910 None => (None, None, None, None), -911 }; -912 TupleEndpointInfo { -913 ip_v4, -914 port_v4, -915 ip_v6, -916 port_v6, -917 connection_ids: cid.map(|cid| vec![cid.to_string()]), -918 } -919} -920 -921#[cfg(feature = "qlog")] -922fn transport_error(code: TransportErrorCode) -> (Option<quic::TransportError>, Option<u64>) { -923 let transport_error = match code { -924 TransportErrorCode::NO_ERROR => Some(quic::TransportError::NoError), -925 TransportErrorCode::INTERNAL_ERROR => Some(quic::TransportError::InternalError), -926 TransportErrorCode::CONNECTION_REFUSED => Some(quic::TransportError::ConnectionRefused), -927 TransportErrorCode::FLOW_CONTROL_ERROR => Some(quic::TransportError::FlowControlError), -928 TransportErrorCode::STREAM_LIMIT_ERROR => Some(quic::TransportError::StreamLimitError), -929 TransportErrorCode::STREAM_STATE_ERROR => Some(quic::TransportError::StreamStateError), -930 TransportErrorCode::FINAL_SIZE_ERROR => Some(quic::TransportError::FinalSizeError), -931 TransportErrorCode::FRAME_ENCODING_ERROR => Some(quic::TransportError::FrameEncodingError), -932 TransportErrorCode::TRANSPORT_PARAMETER_ERROR => { -933 Some(quic::TransportError::TransportParameterError) -934 } -935 TransportErrorCode::CONNECTION_ID_LIMIT_ERROR => { -936 Some(quic::TransportError::ConnectionIdLimitError) -937 } -938 TransportErrorCode::PROTOCOL_VIOLATION => Some(quic::TransportError::ProtocolViolation), -939 TransportErrorCode::INVALID_TOKEN => Some(quic::TransportError::InvalidToken), -940 TransportErrorCode::APPLICATION_ERROR => Some(quic::TransportError::ApplicationError), -941 TransportErrorCode::CRYPTO_BUFFER_EXCEEDED => { -942 Some(quic::TransportError::CryptoBufferExceeded) -943 } -944 TransportErrorCode::KEY_UPDATE_ERROR => Some(quic::TransportError::KeyUpdateError), -945 TransportErrorCode::AEAD_LIMIT_REACHED => Some(quic::TransportError::AeadLimitReached), -946 TransportErrorCode::NO_VIABLE_PATH => Some(quic::TransportError::NoViablePath), -947 // multipath -948 TransportErrorCode::APPLICATION_ABANDON_PATH => { -949 Some(quic::TransportError::ApplicationAbandonPath) -950 } -951 TransportErrorCode::PATH_RESOURCE_LIMIT_REACHED => { -952 Some(quic::TransportError::PathResourceLimitReached) -953 } -954 TransportErrorCode::PATH_UNSTABLE_OR_POOR => Some(quic::TransportError::PathUnstableOrPoor), -955 TransportErrorCode::NO_CID_AVAILABLE_FOR_PATH => { -956 Some(quic::TransportError::NoCidsAvailableForPath) -957 } -958 _ => None, -959 }; -960 let code = match transport_error { -961 None => Some(code.into()), -962 Some(_) => None, -963 }; -964 (transport_error, code) -965} -966 -967#[cfg(feature = "qlog")] -968fn fmt_tuple_id(path_id: u64) -> String { -969 format!("p{path_id}") -970} -971 -972#[cfg(feature = "qlog")] -973impl TransportParameters { -974 fn to_qlog(self, initiator: TransportInitiator) -> ParametersSet { -975 ParametersSet { -976 initiator: Some(initiator), -977 resumption_allowed: None, -978 early_data_enabled: None, -979 tls_cipher: None, -980 original_destination_connection_id: self -981 .original_dst_cid -982 .as_ref() -983 .map(ToString::to_string), -984 initial_source_connection_id: self.initial_src_cid.as_ref().map(ToString::to_string), -985 retry_source_connection_id: self.retry_src_cid.as_ref().map(ToString::to_string), -986 stateless_reset_token: self.stateless_reset_token.as_ref().map(ToString::to_string), -987 disable_active_migration: Some(self.disable_active_migration), -988 max_idle_timeout: Some(self.max_idle_timeout.into()), -989 max_udp_payload_size: Some(self.max_udp_payload_size.into()), -990 ack_delay_exponent: Some(self.ack_delay_exponent.into()), -991 max_ack_delay: Some(self.max_ack_delay.into()), -992 active_connection_id_limit: Some(self.active_connection_id_limit.into()), -993 initial_max_data: Some(self.initial_max_data.into()), -994 initial_max_stream_data_bidi_local: Some( -995 self.initial_max_stream_data_bidi_local.into(), -996 ), -997 initial_max_stream_data_bidi_remote: Some( -998 self.initial_max_stream_data_bidi_remote.into(), -999 ), -1000 initial_max_stream_data_uni: Some(self.initial_max_stream_data_uni.into()), -1001 initial_max_streams_bidi: Some(self.initial_max_streams_bidi.into()), -1002 initial_max_streams_uni: Some(self.initial_max_streams_uni.into()), -1003 preferred_address: self.preferred_address.as_ref().map(Into::into), -1004 min_ack_delay: self.min_ack_delay.map(Into::into), -1005 address_discovery: self.address_discovery_role.to_qlog(), -1006 initial_max_path_id: self.initial_max_path_id.map(|p| p.as_u32() as u64), -1007 max_remote_nat_traversal_addresses: self -1008 .max_remote_nat_traversal_addresses -1009 .map(|v| u64::from(v.get())), -1010 max_datagram_frame_size: self.max_datagram_frame_size.map(Into::into), -1011 grease_quic_bit: Some(self.grease_quic_bit), -1012 unknown_parameters: Default::default(), -1013 } -1014 } -1015 -1016 fn to_qlog_restored(self) -> ParametersRestored { -1017 ParametersRestored { -1018 disable_active_migration: Some(self.disable_active_migration), -1019 max_idle_timeout: Some(self.max_idle_timeout.into()), -1020 max_udp_payload_size: Some(self.max_udp_payload_size.into()), -1021 active_connection_id_limit: Some(self.active_connection_id_limit.into()), -1022 initial_max_data: Some(self.initial_max_data.into()), -1023 initial_max_stream_data_bidi_local: Some( -1024 self.initial_max_stream_data_bidi_local.into(), -1025 ), -1026 initial_max_stream_data_bidi_remote: Some( -1027 self.initial_max_stream_data_bidi_remote.into(), -1028 ), -1029 initial_max_stream_data_uni: Some(self.initial_max_stream_data_uni.into()), -1030 initial_max_streams_bidi: Some(self.initial_max_streams_bidi.into()), -1031 initial_max_streams_uni: Some(self.initial_max_streams_uni.into()), -1032 max_datagram_frame_size: self.max_datagram_frame_size.map(Into::into), -1033 grease_quic_bit: Some(self.grease_quic_bit), -1034 } -1035 } -1036} -1037 -1038#[cfg(feature = "qlog")] -1039impl From<&crate::transport_parameters::PreferredAddress> for PreferredAddress { -1040 fn from(value: &crate::transport_parameters::PreferredAddress) -> Self { -1041 let port_v4 = value.address_v4.map(|addr| addr.port()).unwrap_or_default(); -1042 let port_v6 = value.address_v6.map(|addr| addr.port()).unwrap_or_default(); -1043 let ip_v4 = value -1044 .address_v4 -1045 .map(|addr| addr.ip().to_string()) -1046 .unwrap_or_default(); -1047 let ip_v6 = value -1048 .address_v6 -1049 .map(|addr| addr.ip().to_string()) -1050 .unwrap_or_default(); -1051 let connection_id = value.connection_id.to_string(); -1052 let stateless_reset_token = value.stateless_reset_token.to_string(); -1053 -1054 Self { -1055 ip_v4, -1056 ip_v6, -1057 port_v4, -1058 port_v6, -1059 connection_id, -1060 stateless_reset_token, -1061 } -1062 } -1063} -1064 -1065#[cfg(feature = "qlog")] -1066impl crate::address_discovery::Role { -1067 fn to_qlog(self) -> Option<AddressDiscoveryRole> { -1068 match self { -1069 Self::SendOnly => Some(AddressDiscoveryRole::SendOnly), -1070 Self::ReceiveOnly => Some(AddressDiscoveryRole::ReceiveOnly), -1071 Self::Both => Some(AddressDiscoveryRole::Both), -1072 Self::Disabled => None, -1073 } -1074 } -1075} \ No newline at end of file +488 /// `len` is the packet's full length (before decryption). +489 pub(crate) fn new(len: usize) -> Self { +490 #[cfg(not(feature = "qlog"))] +491 let this = Self {}; +492 +493 #[cfg(feature = "qlog")] +494 let this = { +495 let mut this = Self { +496 inner: Default::default(), +497 padding: 0, +498 }; +499 this.inner.header.length = Some(len as u16); +500 this +501 }; +502 +503 this +504 } +505 +506 /// Adds info from the packet header. +507 pub(crate) fn header(&mut self, header: &Header, pn: Option<u64>, path_id: PathId) { +508 #[cfg(feature = "qlog")] +509 { +510 let is_0rtt = !header.is_1rtt(); +511 self.inner.header.scid = header.src_cid().map(stringify_cid); +512 self.inner.header.dcid = Some(stringify_cid(header.dst_cid())); +513 self.inner.header.packet_number = pn; +514 self.inner.header.packet_type = packet_type(header.space(), is_0rtt); +515 self.inner.header.path_id = Some(path_id.as_u32() as u64); +516 } +517 } +518 +519 /// Adds a frame. +520 pub(crate) fn frame(&mut self, frame: &Frame) { +521 #[cfg(feature = "qlog")] +522 { +523 if matches!(frame, crate::Frame::Padding) { +524 self.padding += 1; +525 } else { +526 self.emit_padding(); +527 self.inner +528 .frames +529 .get_or_insert_default() +530 .push(frame.to_qlog()) +531 } +532 } +533 } +534 +535 #[cfg(feature = "qlog")] +536 fn emit_padding(&mut self) { +537 if self.padding > 0 { +538 self.inner +539 .frames +540 .get_or_insert_default() +541 .push(QuicFrame::Padding { +542 raw: Some(RawInfo { +543 length: Some(self.padding as u64), +544 payload_length: Some(self.padding as u64), +545 data: None, +546 }), +547 }); +548 self.padding = 0; +549 } +550 } +551} +552 +553/* Frame conversions to qlog */ +554#[cfg(feature = "qlog")] +555pub(crate) trait ToQlog { +556 fn to_qlog(&self) -> QuicFrame; +557} +558 +559#[cfg(feature = "qlog")] +560impl<'a> ToQlog for frame::AckEncoder<'a> { +561 fn to_qlog(&self) -> QuicFrame { +562 QuicFrame::Ack { +563 ack_delay: Some(self.delay as f32), +564 acked_ranges: Some(AckedRanges::Double( +565 self.ranges +566 .iter() +567 .map(|range| (range.start, range.end)) +568 .collect(), +569 )), +570 ect1: self.ecn.map(|e| e.ect1), +571 ect0: self.ecn.map(|e| e.ect0), +572 ce: self.ecn.map(|e| e.ce), +573 raw: None, +574 } +575 } +576} +577 +578#[cfg(feature = "qlog")] +579impl ToQlog for frame::AckFrequency { +580 fn to_qlog(&self) -> QuicFrame { +581 QuicFrame::AckFrequency { +582 sequence_number: self.sequence.into_inner(), +583 ack_eliciting_threshold: self.ack_eliciting_threshold.into_inner(), +584 requested_max_ack_delay: self.request_max_ack_delay.into_inner(), +585 reordering_threshold: self.reordering_threshold.into_inner(), +586 raw: None, +587 } +588 } +589} +590 +591#[cfg(feature = "qlog")] +592impl ToQlog for frame::AddAddress { +593 fn to_qlog(&self) -> QuicFrame { +594 QuicFrame::AddAddress { +595 sequence_number: self.seq_no.into_inner(), +596 ip_v4: match self.ip { +597 IpAddr::V4(ipv4_addr) => Some(ipv4_addr.to_string()), +598 IpAddr::V6(ipv6_addr) => None, +599 }, +600 ip_v6: match self.ip { +601 IpAddr::V4(ipv4_addr) => None, +602 IpAddr::V6(ipv6_addr) => Some(ipv6_addr.to_string()), +603 }, +604 port: self.port, +605 } +606 } +607} +608 +609#[cfg(feature = "qlog")] +610impl ToQlog for frame::CloseEncoder<'_> { +611 fn to_qlog(&self) -> QuicFrame { +612 self.close.to_qlog() +613 } +614} +615 +616#[cfg(feature = "qlog")] +617impl ToQlog for frame::Close { +618 fn to_qlog(&self) -> QuicFrame { +619 match self { +620 Self::Connection(f) => { +621 let (error, error_code) = transport_error(f.error_code); +622 let error = error.map(|transport_error| { +623 ConnectionClosedFrameError::TransportError(transport_error) +624 }); +625 QuicFrame::ConnectionClose { +626 error_space: Some(ErrorSpace::TransportError), +627 error, +628 error_code, +629 reason: String::from_utf8(f.reason.to_vec()).ok(), +630 reason_bytes: None, +631 trigger_frame_type: None, +632 } +633 } +634 Self::Application(f) => QuicFrame::ConnectionClose { +635 error_space: Some(ErrorSpace::ApplicationError), +636 error: None, +637 error_code: Some(f.error_code.into_inner()), +638 reason: String::from_utf8(f.reason.to_vec()).ok(), +639 reason_bytes: None, +640 trigger_frame_type: None, +641 }, +642 } +643 } +644} +645 +646#[cfg(feature = "qlog")] +647impl ToQlog for frame::Crypto { +648 fn to_qlog(&self) -> QuicFrame { +649 QuicFrame::Crypto { +650 offset: self.offset, +651 raw: Some(RawInfo { +652 length: Some(self.data.len() as u64), +653 ..Default::default() +654 }), +655 } +656 } +657} +658 +659#[cfg(feature = "qlog")] +660impl ToQlog for frame::Datagram { +661 fn to_qlog(&self) -> QuicFrame { +662 QuicFrame::Datagram { +663 raw: Some(RawInfo { +664 length: Some(self.data.len() as u64), +665 ..Default::default() +666 }), +667 } +668 } +669} +670 +671#[cfg(feature = "qlog")] +672impl ToQlog for frame::HandshakeDone { +673 fn to_qlog(&self) -> QuicFrame { +674 QuicFrame::HandshakeDone { raw: None } +675 } +676} +677 +678#[cfg(feature = "qlog")] +679impl ToQlog for frame::ImmediateAck { +680 fn to_qlog(&self) -> QuicFrame { +681 QuicFrame::ImmediateAck { raw: None } +682 } +683} +684 +685#[cfg(feature = "qlog")] +686impl ToQlog for frame::MaxData { +687 fn to_qlog(&self) -> QuicFrame { +688 QuicFrame::MaxData { +689 maximum: self.0.into(), +690 raw: None, +691 } +692 } +693} +694 +695#[cfg(feature = "qlog")] +696impl ToQlog for frame::MaxPathId { +697 fn to_qlog(&self) -> QuicFrame { +698 QuicFrame::MaxPathId { +699 maximum_path_id: self.0.as_u32().into(), +700 raw: None, +701 } +702 } +703} +704 +705#[cfg(feature = "qlog")] +706impl ToQlog for frame::MaxStreamData { +707 fn to_qlog(&self) -> QuicFrame { +708 QuicFrame::MaxStreamData { +709 stream_id: self.id.into(), +710 maximum: self.offset, +711 raw: None, +712 } +713 } +714} +715 +716#[cfg(feature = "qlog")] +717impl ToQlog for frame::MaxStreams { +718 fn to_qlog(&self) -> QuicFrame { +719 QuicFrame::MaxStreams { +720 maximum: self.count, +721 stream_type: self.dir.into(), +722 raw: None, +723 } +724 } +725} +726 +727#[cfg(feature = "qlog")] +728impl ToQlog for frame::NewConnectionId { +729 fn to_qlog(&self) -> QuicFrame { +730 QuicFrame::NewConnectionId { +731 sequence_number: self.sequence, +732 retire_prior_to: self.retire_prior_to, +733 connection_id_length: Some(self.id.len() as u8), +734 connection_id: self.id.to_string(), +735 stateless_reset_token: Some(self.reset_token.to_string()), +736 raw: None, +737 } +738 } +739} +740 +741#[cfg(feature = "qlog")] +742impl ToQlog for frame::NewToken { +743 fn to_qlog(&self) -> QuicFrame { +744 QuicFrame::NewToken { +745 token: qlog::Token { +746 ty: Some(TokenType::Retry), +747 raw: Some(RawInfo { +748 data: HexSlice::maybe_string(Some(&self.token)), +749 length: Some(self.token.len() as u64), +750 payload_length: None, +751 }), +752 details: None, +753 }, +754 raw: None, +755 } +756 } +757} +758 +759#[cfg(feature = "qlog")] +760impl ToQlog for frame::ObservedAddr { +761 fn to_qlog(&self) -> QuicFrame { +762 QuicFrame::ObservedAddress { +763 sequence_number: self.seq_no.into_inner(), +764 ip_v4: match self.ip { +765 IpAddr::V4(ipv4_addr) => Some(ipv4_addr.to_string()), +766 IpAddr::V6(ipv6_addr) => None, +767 }, +768 ip_v6: match self.ip { +769 IpAddr::V4(ipv4_addr) => None, +770 IpAddr::V6(ipv6_addr) => Some(ipv6_addr.to_string()), +771 }, +772 port: self.port, +773 raw: None, +774 } +775 } +776} +777 +778#[cfg(feature = "qlog")] +779impl ToQlog for frame::PathAbandon { +780 fn to_qlog(&self) -> QuicFrame { +781 QuicFrame::PathAbandon { +782 path_id: self.path_id.as_u32().into(), +783 error_code: self.error_code.into(), +784 raw: None, +785 } +786 } +787} +788 +789#[cfg(feature = "qlog")] +790impl ToQlog for frame::PathAckEncoder<'_> { +791 fn to_qlog(&self) -> QuicFrame { +792 QuicFrame::PathAck { +793 path_id: self.path_id.as_u32() as u64, +794 ack_delay: Some(self.delay as f32), +795 acked_ranges: Some(AckedRanges::Double( +796 self.ranges +797 .iter() +798 .map(|range| (range.start, range.end)) +799 .collect(), +800 )), +801 ect1: self.ecn.map(|e| e.ect1), +802 ect0: self.ecn.map(|e| e.ect0), +803 ce: self.ecn.map(|e| e.ce), +804 raw: None, +805 } +806 } +807} +808 +809#[cfg(feature = "qlog")] +810impl ToQlog for frame::PathChallenge { +811 #[cfg(feature = "qlog")] +812 fn to_qlog(&self) -> QuicFrame { +813 QuicFrame::PathChallenge { +814 data: Some(self.to_string()), +815 raw: None, +816 } +817 } +818} +819 +820#[cfg(feature = "qlog")] +821impl ToQlog for frame::PathCidsBlocked { +822 fn to_qlog(&self) -> QuicFrame { +823 QuicFrame::PathCidsBlocked { +824 path_id: self.path_id.as_u32().into(), +825 next_sequence_number: self.next_seq.into(), +826 raw: None, +827 } +828 } +829} +830 +831#[cfg(feature = "qlog")] +832impl ToQlog for frame::PathResponse { +833 fn to_qlog(&self) -> QuicFrame { +834 QuicFrame::PathResponse { +835 data: Some(self.to_string()), +836 raw: None, +837 } +838 } +839} +840 +841#[cfg(feature = "qlog")] +842impl ToQlog for frame::ReachOut { +843 fn to_qlog(&self) -> QuicFrame { +844 QuicFrame::ReachOut { +845 round: self.round.into_inner(), +846 ip_v4: match self.ip { +847 IpAddr::V4(ipv4_addr) => Some(ipv4_addr.to_string()), +848 IpAddr::V6(ipv6_addr) => None, +849 }, +850 ip_v6: match self.ip { +851 IpAddr::V4(ipv4_addr) => None, +852 IpAddr::V6(ipv6_addr) => Some(ipv6_addr.to_string()), +853 }, +854 port: self.port, +855 } +856 } +857} +858 +859#[cfg(feature = "qlog")] +860impl ToQlog for frame::Ping { +861 fn to_qlog(&self) -> QuicFrame { +862 QuicFrame::Ping { raw: None } +863 } +864} +865 +866#[cfg(feature = "qlog")] +867impl ToQlog for frame::PathStatusAvailable { +868 fn to_qlog(&self) -> QuicFrame { +869 QuicFrame::PathStatusAvailable { +870 path_id: self.path_id.as_u32().into(), +871 path_status_sequence_number: self.status_seq_no.into(), +872 raw: None, +873 } +874 } +875} +876 +877#[cfg(feature = "qlog")] +878impl ToQlog for frame::PathStatusBackup { +879 fn to_qlog(&self) -> QuicFrame { +880 QuicFrame::PathStatusBackup { +881 path_id: self.path_id.as_u32().into(), +882 path_status_sequence_number: self.status_seq_no.into(), +883 raw: None, +884 } +885 } +886} +887 +888#[cfg(feature = "qlog")] +889impl ToQlog for frame::PathsBlocked { +890 fn to_qlog(&self) -> QuicFrame { +891 QuicFrame::PathsBlocked { +892 maximum_path_id: self.0.as_u32().into(), +893 raw: None, +894 } +895 } +896} +897 +898#[cfg(feature = "qlog")] +899impl ToQlog for frame::ResetStream { +900 fn to_qlog(&self) -> QuicFrame { +901 QuicFrame::ResetStream { +902 stream_id: self.id.into(), +903 error_code: Some(self.error_code.into_inner()), +904 final_size: self.final_offset.into(), +905 error: ApplicationError::Unknown, +906 raw: None, +907 } +908 } +909} +910 +911#[cfg(feature = "qlog")] +912impl ToQlog for frame::StopSending { +913 fn to_qlog(&self) -> QuicFrame { +914 QuicFrame::StopSending { +915 stream_id: self.id.into(), +916 error_code: Some(self.error_code.into_inner()), +917 error: ApplicationError::Unknown, +918 raw: None, +919 } +920 } +921} +922 +923#[cfg(feature = "qlog")] +924impl ToQlog for frame::RetireConnectionId { +925 fn to_qlog(&self) -> QuicFrame { +926 QuicFrame::RetireConnectionId { +927 sequence_number: self.sequence, +928 raw: None, +929 } +930 } +931} +932 +933#[cfg(feature = "qlog")] +934impl ToQlog for frame::RemoveAddress { +935 fn to_qlog(&self) -> QuicFrame { +936 QuicFrame::RemoveAddress { +937 sequence_number: self.seq_no.into_inner(), +938 } +939 } +940} +941 +942#[cfg(feature = "qlog")] +943impl ToQlog for frame::StreamMetaEncoder { +944 fn to_qlog(&self) -> QuicFrame { +945 let meta = &self.meta; +946 QuicFrame::Stream { +947 stream_id: meta.id.into(), +948 offset: Some(meta.offsets.start), +949 fin: Some(meta.fin), +950 raw: Some(RawInfo { +951 length: Some(meta.offsets.end - meta.offsets.start), +952 ..Default::default() +953 }), +954 } +955 } +956} +957 +958#[cfg(feature = "qlog")] +959impl Frame { +960 /// Converts a [`crate::Frame`] into a [`QuicFrame`]. +961 pub(crate) fn to_qlog(&self) -> QuicFrame { +962 match self { +963 Self::Padding => QuicFrame::Padding { +964 raw: Some(RawInfo { +965 length: None, +966 payload_length: Some(1), +967 data: None, +968 }), +969 }, +970 Self::Ping => frame::Ping.to_qlog(), +971 Self::Ack(f) => QuicFrame::Ack { +972 ack_delay: Some(f.delay as f32), +973 acked_ranges: Some(AckedRanges::Double( +974 f.iter() +975 .map(|range| (*range.start(), *range.end())) +976 .collect(), +977 )), +978 ect1: f.ecn.as_ref().map(|e| e.ect1), +979 ect0: f.ecn.as_ref().map(|e| e.ect0), +980 ce: f.ecn.as_ref().map(|e| e.ce), +981 raw: None, +982 }, +983 Self::ResetStream(f) => f.to_qlog(), +984 Self::StopSending(f) => f.to_qlog(), +985 Self::Crypto(f) => f.to_qlog(), +986 Self::NewToken(f) => f.to_qlog(), +987 Self::Stream(s) => QuicFrame::Stream { +988 stream_id: s.id.into(), +989 offset: Some(s.offset), +990 fin: Some(s.fin), +991 raw: Some(RawInfo { +992 length: Some(s.data.len() as u64), +993 ..Default::default() +994 }), +995 }, +996 Self::MaxData(v) => v.to_qlog(), +997 Self::MaxStreamData(f) => f.to_qlog(), +998 Self::MaxStreams(f) => f.to_qlog(), +999 Self::DataBlocked { offset } => QuicFrame::DataBlocked { +1000 limit: *offset, +1001 raw: None, +1002 }, +1003 Self::StreamDataBlocked { id, offset } => QuicFrame::StreamDataBlocked { +1004 stream_id: (*id).into(), +1005 limit: *offset, +1006 raw: None, +1007 }, +1008 Self::StreamsBlocked { dir, limit } => QuicFrame::StreamsBlocked { +1009 stream_type: (*dir).into(), +1010 limit: *limit, +1011 raw: None, +1012 }, +1013 Self::NewConnectionId(f) => f.to_qlog(), +1014 Self::RetireConnectionId(f) => f.to_qlog(), +1015 Self::PathChallenge(f) => f.to_qlog(), +1016 Self::PathResponse(f) => f.to_qlog(), +1017 Self::Close(close) => close.to_qlog(), +1018 Self::Datagram(d) => d.to_qlog(), +1019 Self::HandshakeDone => frame::HandshakeDone.to_qlog(), +1020 Self::PathAck(ack) => QuicFrame::PathAck { +1021 path_id: ack.path_id.as_u32().into(), +1022 ack_delay: Some(ack.delay as f32), +1023 ect1: ack.ecn.as_ref().map(|e| e.ect1), +1024 ect0: ack.ecn.as_ref().map(|e| e.ect0), +1025 ce: ack.ecn.as_ref().map(|e| e.ce), +1026 raw: None, +1027 acked_ranges: Some(AckedRanges::Double( +1028 ack.into_iter() +1029 .map(|range| (*range.start(), *range.end())) +1030 .collect(), +1031 )), +1032 }, +1033 Self::PathAbandon(frame) => frame.to_qlog(), +1034 Self::PathStatusAvailable(frame) => frame.to_qlog(), +1035 Self::PathStatusBackup(frame) => frame.to_qlog(), +1036 Self::PathsBlocked(frame) => frame.to_qlog(), +1037 Self::PathCidsBlocked(frame) => frame.to_qlog(), +1038 Self::MaxPathId(f) => f.to_qlog(), +1039 Self::AckFrequency(f) => f.to_qlog(), +1040 Self::ImmediateAck => frame::ImmediateAck.to_qlog(), +1041 Self::ObservedAddr(f) => f.to_qlog(), +1042 Self::AddAddress(f) => f.to_qlog(), +1043 Self::ReachOut(f) => f.to_qlog(), +1044 Self::RemoveAddress(f) => f.to_qlog(), +1045 } +1046 } +1047} +1048 +1049#[cfg(feature = "qlog")] +1050impl From<crate::Dir> for StreamType { +1051 fn from(value: crate::Dir) -> Self { +1052 match value { +1053 crate::Dir::Bi => Self::Bidirectional, +1054 crate::Dir::Uni => Self::Unidirectional, +1055 } +1056 } +1057} +1058 +1059#[cfg(feature = "qlog")] +1060fn packet_type(space: SpaceId, is_0rtt: bool) -> PacketType { +1061 match space { +1062 SpaceId::Initial => PacketType::Initial, +1063 SpaceId::Handshake => PacketType::Handshake, +1064 SpaceId::Data if is_0rtt => PacketType::ZeroRtt, +1065 SpaceId::Data => PacketType::OneRtt, +1066 } +1067} +1068 +1069#[cfg(feature = "qlog")] +1070fn stringify_cid(cid: ConnectionId) -> String { +1071 format!("{cid}") +1072} +1073 +1074#[cfg(feature = "qlog")] +1075fn tuple_endpoint_info( +1076 ip: Option<IpAddr>, +1077 port: Option<u16>, +1078 cid: Option<ConnectionId>, +1079) -> TupleEndpointInfo { +1080 let (ip_v4, port_v4, ip_v6, port_v6) = match ip { +1081 Some(addr) => match addr { +1082 IpAddr::V4(ipv4_addr) => (Some(ipv4_addr.to_string()), port, None, None), +1083 IpAddr::V6(ipv6_addr) => (None, None, Some(ipv6_addr.to_string()), port), +1084 }, +1085 None => (None, None, None, None), +1086 }; +1087 TupleEndpointInfo { +1088 ip_v4, +1089 port_v4, +1090 ip_v6, +1091 port_v6, +1092 connection_ids: cid.map(|cid| vec![cid.to_string()]), +1093 } +1094} +1095 +1096#[cfg(feature = "qlog")] +1097fn transport_error(code: TransportErrorCode) -> (Option<quic::TransportError>, Option<u64>) { +1098 let transport_error = match code { +1099 TransportErrorCode::NO_ERROR => Some(quic::TransportError::NoError), +1100 TransportErrorCode::INTERNAL_ERROR => Some(quic::TransportError::InternalError), +1101 TransportErrorCode::CONNECTION_REFUSED => Some(quic::TransportError::ConnectionRefused), +1102 TransportErrorCode::FLOW_CONTROL_ERROR => Some(quic::TransportError::FlowControlError), +1103 TransportErrorCode::STREAM_LIMIT_ERROR => Some(quic::TransportError::StreamLimitError), +1104 TransportErrorCode::STREAM_STATE_ERROR => Some(quic::TransportError::StreamStateError), +1105 TransportErrorCode::FINAL_SIZE_ERROR => Some(quic::TransportError::FinalSizeError), +1106 TransportErrorCode::FRAME_ENCODING_ERROR => Some(quic::TransportError::FrameEncodingError), +1107 TransportErrorCode::TRANSPORT_PARAMETER_ERROR => { +1108 Some(quic::TransportError::TransportParameterError) +1109 } +1110 TransportErrorCode::CONNECTION_ID_LIMIT_ERROR => { +1111 Some(quic::TransportError::ConnectionIdLimitError) +1112 } +1113 TransportErrorCode::PROTOCOL_VIOLATION => Some(quic::TransportError::ProtocolViolation), +1114 TransportErrorCode::INVALID_TOKEN => Some(quic::TransportError::InvalidToken), +1115 TransportErrorCode::APPLICATION_ERROR => Some(quic::TransportError::ApplicationError), +1116 TransportErrorCode::CRYPTO_BUFFER_EXCEEDED => { +1117 Some(quic::TransportError::CryptoBufferExceeded) +1118 } +1119 TransportErrorCode::KEY_UPDATE_ERROR => Some(quic::TransportError::KeyUpdateError), +1120 TransportErrorCode::AEAD_LIMIT_REACHED => Some(quic::TransportError::AeadLimitReached), +1121 TransportErrorCode::NO_VIABLE_PATH => Some(quic::TransportError::NoViablePath), +1122 // multipath +1123 TransportErrorCode::APPLICATION_ABANDON_PATH => { +1124 Some(quic::TransportError::ApplicationAbandonPath) +1125 } +1126 TransportErrorCode::PATH_RESOURCE_LIMIT_REACHED => { +1127 Some(quic::TransportError::PathResourceLimitReached) +1128 } +1129 TransportErrorCode::PATH_UNSTABLE_OR_POOR => Some(quic::TransportError::PathUnstableOrPoor), +1130 TransportErrorCode::NO_CID_AVAILABLE_FOR_PATH => { +1131 Some(quic::TransportError::NoCidsAvailableForPath) +1132 } +1133 _ => None, +1134 }; +1135 let code = match transport_error { +1136 None => Some(code.into()), +1137 Some(_) => None, +1138 }; +1139 (transport_error, code) +1140} +1141 +1142#[cfg(feature = "qlog")] +1143fn fmt_tuple_id(path_id: u64) -> String { +1144 format!("p{path_id}") +1145} +1146 +1147#[cfg(feature = "qlog")] +1148impl TransportParameters { +1149 fn to_qlog(self, initiator: TransportInitiator) -> ParametersSet { +1150 ParametersSet { +1151 initiator: Some(initiator), +1152 resumption_allowed: None, +1153 early_data_enabled: None, +1154 tls_cipher: None, +1155 original_destination_connection_id: self +1156 .original_dst_cid +1157 .as_ref() +1158 .map(ToString::to_string), +1159 initial_source_connection_id: self.initial_src_cid.as_ref().map(ToString::to_string), +1160 retry_source_connection_id: self.retry_src_cid.as_ref().map(ToString::to_string), +1161 stateless_reset_token: self.stateless_reset_token.as_ref().map(ToString::to_string), +1162 disable_active_migration: Some(self.disable_active_migration), +1163 max_idle_timeout: Some(self.max_idle_timeout.into()), +1164 max_udp_payload_size: Some(self.max_udp_payload_size.into()), +1165 ack_delay_exponent: Some(self.ack_delay_exponent.into()), +1166 max_ack_delay: Some(self.max_ack_delay.into()), +1167 active_connection_id_limit: Some(self.active_connection_id_limit.into()), +1168 initial_max_data: Some(self.initial_max_data.into()), +1169 initial_max_stream_data_bidi_local: Some( +1170 self.initial_max_stream_data_bidi_local.into(), +1171 ), +1172 initial_max_stream_data_bidi_remote: Some( +1173 self.initial_max_stream_data_bidi_remote.into(), +1174 ), +1175 initial_max_stream_data_uni: Some(self.initial_max_stream_data_uni.into()), +1176 initial_max_streams_bidi: Some(self.initial_max_streams_bidi.into()), +1177 initial_max_streams_uni: Some(self.initial_max_streams_uni.into()), +1178 preferred_address: self.preferred_address.as_ref().map(Into::into), +1179 min_ack_delay: self.min_ack_delay.map(Into::into), +1180 address_discovery: self.address_discovery_role.to_qlog(), +1181 initial_max_path_id: self.initial_max_path_id.map(|p| p.as_u32() as u64), +1182 max_remote_nat_traversal_addresses: self +1183 .max_remote_nat_traversal_addresses +1184 .map(|v| u64::from(v.get())), +1185 max_datagram_frame_size: self.max_datagram_frame_size.map(Into::into), +1186 grease_quic_bit: Some(self.grease_quic_bit), +1187 unknown_parameters: Default::default(), +1188 } +1189 } +1190 +1191 fn to_qlog_restored(self) -> ParametersRestored { +1192 ParametersRestored { +1193 disable_active_migration: Some(self.disable_active_migration), +1194 max_idle_timeout: Some(self.max_idle_timeout.into()), +1195 max_udp_payload_size: Some(self.max_udp_payload_size.into()), +1196 active_connection_id_limit: Some(self.active_connection_id_limit.into()), +1197 initial_max_data: Some(self.initial_max_data.into()), +1198 initial_max_stream_data_bidi_local: Some( +1199 self.initial_max_stream_data_bidi_local.into(), +1200 ), +1201 initial_max_stream_data_bidi_remote: Some( +1202 self.initial_max_stream_data_bidi_remote.into(), +1203 ), +1204 initial_max_stream_data_uni: Some(self.initial_max_stream_data_uni.into()), +1205 initial_max_streams_bidi: Some(self.initial_max_streams_bidi.into()), +1206 initial_max_streams_uni: Some(self.initial_max_streams_uni.into()), +1207 max_datagram_frame_size: self.max_datagram_frame_size.map(Into::into), +1208 grease_quic_bit: Some(self.grease_quic_bit), +1209 } +1210 } +1211} +1212 +1213#[cfg(feature = "qlog")] +1214impl From<&crate::transport_parameters::PreferredAddress> for PreferredAddress { +1215 fn from(value: &crate::transport_parameters::PreferredAddress) -> Self { +1216 let port_v4 = value.address_v4.map(|addr| addr.port()).unwrap_or_default(); +1217 let port_v6 = value.address_v6.map(|addr| addr.port()).unwrap_or_default(); +1218 let ip_v4 = value +1219 .address_v4 +1220 .map(|addr| addr.ip().to_string()) +1221 .unwrap_or_default(); +1222 let ip_v6 = value +1223 .address_v6 +1224 .map(|addr| addr.ip().to_string()) +1225 .unwrap_or_default(); +1226 let connection_id = value.connection_id.to_string(); +1227 let stateless_reset_token = value.stateless_reset_token.to_string(); +1228 +1229 Self { +1230 ip_v4, +1231 ip_v6, +1232 port_v4, +1233 port_v6, +1234 connection_id, +1235 stateless_reset_token, +1236 } +1237 } +1238} +1239 +1240#[cfg(feature = "qlog")] +1241impl crate::address_discovery::Role { +1242 fn to_qlog(self) -> Option<AddressDiscoveryRole> { +1243 match self { +1244 Self::SendOnly => Some(AddressDiscoveryRole::SendOnly), +1245 Self::ReceiveOnly => Some(AddressDiscoveryRole::ReceiveOnly), +1246 Self::Both => Some(AddressDiscoveryRole::Both), +1247 Self::Disabled => None, +1248 } +1249 } +1250} \ No newline at end of file diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/stats.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/stats.rs.html index 1cf7bb5d8..5726f7e70 100644 --- a/pr/323/docs/src/iroh_quinn_proto/connection/stats.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/connection/stats.rs.html @@ -1,7 +1,7 @@ stats.rs - source

iroh_quinn_proto/connection/
stats.rs

1//! Connection statistics
 2
-3use crate::FrameType;
-4use crate::{Dir, Duration, frame::Frame};
+3use crate::Duration;
+4use crate::FrameType;
 5
 6/// Statistics about UDP datagrams transmitted or received on a connection
 7///
@@ -72,148 +72,132 @@
 72}
 73
 74impl FrameStats {
-75    pub(crate) fn record(&mut self, frame: &Frame) {
-76        match frame {
-77            Frame::Padding => {}
-78            Frame::Ping => self.ping += 1,
-79            Frame::Ack(_) => self.acks += 1,
-80            Frame::PathAck(_) => self.path_acks += 1,
-81            Frame::ResetStream(_) => self.reset_stream += 1,
-82            Frame::StopSending(_) => self.stop_sending += 1,
-83            Frame::Crypto(_) => self.crypto += 1,
-84            Frame::Datagram(_) => self.datagram += 1,
-85            Frame::NewToken(_) => self.new_token += 1,
-86            Frame::MaxData(_) => self.max_data += 1,
-87            Frame::MaxStreamData { .. } => self.max_stream_data += 1,
-88            Frame::MaxStreams { dir, .. } => {
-89                if *dir == Dir::Bi {
-90                    self.max_streams_bidi += 1;
-91                } else {
-92                    self.max_streams_uni += 1;
-93                }
-94            }
-95            Frame::DataBlocked { .. } => self.data_blocked += 1,
-96            Frame::Stream(_) => self.stream += 1,
-97            Frame::StreamDataBlocked { .. } => self.stream_data_blocked += 1,
-98            Frame::StreamsBlocked { dir, .. } => {
-99                if *dir == Dir::Bi {
-100                    self.streams_blocked_bidi += 1;
-101                } else {
-102                    self.streams_blocked_uni += 1;
-103                }
-104            }
-105            Frame::NewConnectionId(frame) => match frame.path_id {
-106                Some(_) => self.path_new_connection_id += 1,
-107                None => self.new_connection_id += 1,
-108            },
-109            Frame::RetireConnectionId(frame) => match frame.get_type() {
-110                FrameType::RetireConnectionId => self.retire_connection_id += 1,
-111                FrameType::PathRetireConnectionId => self.path_retire_connection_id += 1,
-112                _ => unreachable!(),
-113            },
-114            Frame::PathChallenge(_) => self.path_challenge += 1,
-115            Frame::PathResponse(_) => self.path_response += 1,
-116            Frame::Close(_) => self.connection_close += 1,
-117            Frame::AckFrequency(_) => self.ack_frequency += 1,
-118            Frame::ImmediateAck => self.immediate_ack += 1,
-119            Frame::HandshakeDone => self.handshake_done = self.handshake_done.saturating_add(1),
-120            Frame::ObservedAddr(_) => self.observed_addr += 1,
-121            Frame::PathAbandon(_) => self.path_abandon = self.path_abandon.saturating_add(1),
-122            Frame::PathStatusAvailable(_) => {
-123                self.path_status_available = self.path_status_available.saturating_add(1)
-124            }
-125            Frame::PathStatusBackup(_) => {
-126                self.path_status_backup = self.path_status_backup.saturating_add(1)
-127            }
-128            Frame::MaxPathId(_) => self.max_path_id = self.max_path_id.saturating_add(1),
-129            Frame::PathsBlocked(_) => self.paths_blocked = self.paths_blocked.saturating_add(1),
-130            Frame::PathCidsBlocked(_) => {
-131                self.path_cids_blocked = self.path_cids_blocked.saturating_add(1)
-132            }
-133            Frame::AddAddress(_) => self.add_address = self.add_address.saturating_add(1),
-134            Frame::ReachOut(_) => self.reach_out = self.reach_out.saturating_add(1),
-135            Frame::RemoveAddress(_) => self.remove_address = self.remove_address.saturating_add(1),
-136        }
-137    }
-138}
-139
-140impl std::fmt::Debug for FrameStats {
-141    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-142        f.debug_struct("FrameStats")
-143            .field("ACK", &self.acks)
-144            .field("ACK_FREQUENCY", &self.ack_frequency)
-145            .field("CONNECTION_CLOSE", &self.connection_close)
-146            .field("CRYPTO", &self.crypto)
-147            .field("DATA_BLOCKED", &self.data_blocked)
-148            .field("DATAGRAM", &self.datagram)
-149            .field("HANDSHAKE_DONE", &self.handshake_done)
-150            .field("IMMEDIATE_ACK", &self.immediate_ack)
-151            .field("MAX_DATA", &self.max_data)
-152            .field("MAX_PATH_ID", &self.max_path_id)
-153            .field("MAX_STREAM_DATA", &self.max_stream_data)
-154            .field("MAX_STREAMS_BIDI", &self.max_streams_bidi)
-155            .field("MAX_STREAMS_UNI", &self.max_streams_uni)
-156            .field("NEW_CONNECTION_ID", &self.new_connection_id)
-157            .field("NEW_TOKEN", &self.new_token)
-158            .field("PATHS_BLOCKED", &self.paths_blocked)
-159            .field("PATH_ABANDON", &self.path_abandon)
-160            .field("PATH_ACK", &self.path_acks)
-161            .field("PATH_STATUS_AVAILABLE", &self.path_status_available)
-162            .field("PATH_STATUS_BACKUP", &self.path_status_backup)
-163            .field("PATH_CHALLENGE", &self.path_challenge)
-164            .field("PATH_CIDS_BLOCKED", &self.path_cids_blocked)
-165            .field("PATH_NEW_CONNECTION_ID", &self.path_new_connection_id)
-166            .field("PATH_RESPONSE", &self.path_response)
-167            .field("PATH_RETIRE_CONNECTION_ID", &self.path_retire_connection_id)
-168            .field("PING", &self.ping)
-169            .field("RESET_STREAM", &self.reset_stream)
-170            .field("RETIRE_CONNECTION_ID", &self.retire_connection_id)
-171            .field("STREAM_DATA_BLOCKED", &self.stream_data_blocked)
-172            .field("STREAMS_BLOCKED_BIDI", &self.streams_blocked_bidi)
-173            .field("STREAMS_BLOCKED_UNI", &self.streams_blocked_uni)
-174            .field("STOP_SENDING", &self.stop_sending)
-175            .field("STREAM", &self.stream)
-176            .finish()
-177    }
-178}
-179
-180/// Statistics related to a transmission path
-181#[derive(Debug, Default, Copy, Clone, PartialEq, Eq)]
-182#[non_exhaustive]
-183pub struct PathStats {
-184    /// Current best estimate of this connection's latency (round-trip-time)
-185    pub rtt: Duration,
-186    /// Current congestion window of the connection
-187    pub cwnd: u64,
-188    /// Congestion events on the connection
-189    pub congestion_events: u64,
-190    /// The amount of packets lost on this path
-191    pub lost_packets: u64,
-192    /// The amount of bytes lost on this path
-193    pub lost_bytes: u64,
-194    /// The amount of packets sent on this path
-195    pub sent_packets: u64,
-196    /// The amount of PLPMTUD probe packets sent on this path (also counted by `sent_packets`)
-197    pub sent_plpmtud_probes: u64,
-198    /// The amount of PLPMTUD probe packets lost on this path (ignored by `lost_packets` and
-199    /// `lost_bytes`)
-200    pub lost_plpmtud_probes: u64,
-201    /// The number of times a black hole was detected in the path
-202    pub black_holes_detected: u64,
-203    /// Largest UDP payload size the path currently supports
-204    pub current_mtu: u16,
-205}
-206
-207/// Connection statistics
-208#[derive(Debug, Default, Clone)]
-209#[non_exhaustive]
-210pub struct ConnectionStats {
-211    /// Statistics about UDP datagrams transmitted on a connection
-212    pub udp_tx: UdpStats,
-213    /// Statistics about UDP datagrams received on a connection
-214    pub udp_rx: UdpStats,
-215    /// Statistics about frames transmitted on a connection
-216    pub frame_tx: FrameStats,
-217    /// Statistics about frames received on a connection
-218    pub frame_rx: FrameStats,
-219}
\ No newline at end of file +75 pub(crate) fn record(&mut self, frame_type: FrameType) { +76 use FrameType::*; +77 // Increments the field. Added for readability +78 macro_rules! inc { +79 ($field_name: ident) => {{ self.$field_name = self.$field_name.saturating_add(1) }}; +80 } +81 match frame_type { +82 Padding => {} +83 Ping => inc!(ping), +84 Ack | AckEcn => inc!(acks), +85 PathAck | PathAckEcn => inc!(path_acks), +86 ResetStream => inc!(reset_stream), +87 StopSending => inc!(stop_sending), +88 Crypto => inc!(crypto), +89 Datagram(_) => inc!(datagram), +90 NewToken => inc!(new_token), +91 MaxData => inc!(max_data), +92 MaxStreamData => inc!(max_stream_data), +93 MaxStreamsBidi => inc!(max_streams_bidi), +94 MaxStreamsUni => inc!(max_streams_uni), +95 DataBlocked => inc!(data_blocked), +96 Stream(_) => inc!(stream), +97 StreamDataBlocked => inc!(stream_data_blocked), +98 StreamsBlockedUni => inc!(streams_blocked_uni), +99 StreamsBlockedBidi => inc!(streams_blocked_bidi), +100 NewConnectionId => inc!(new_connection_id), +101 PathNewConnectionId => inc!(path_new_connection_id), +102 RetireConnectionId => inc!(retire_connection_id), +103 PathRetireConnectionId => inc!(path_retire_connection_id), +104 PathChallenge => inc!(path_challenge), +105 PathResponse => inc!(path_response), +106 ConnectionClose | ApplicationClose => inc!(connection_close), +107 AckFrequency => inc!(ack_frequency), +108 ImmediateAck => inc!(immediate_ack), +109 HandshakeDone => inc!(handshake_done), +110 ObservedIpv4Addr | ObservedIpv6Addr => inc!(observed_addr), +111 PathAbandon => inc!(path_abandon), +112 PathStatusAvailable => inc!(path_status_available), +113 PathStatusBackup => inc!(path_status_backup), +114 MaxPathId => inc!(max_path_id), +115 PathsBlocked => inc!(paths_blocked), +116 PathCidsBlocked => inc!(path_cids_blocked), +117 AddIpv4Address | AddIpv6Address => inc!(add_address), +118 ReachOutAtIpv4 | ReachOutAtIpv6 => inc!(reach_out), +119 RemoveAddress => inc!(remove_address), +120 }; +121 } +122} +123 +124impl std::fmt::Debug for FrameStats { +125 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { +126 f.debug_struct("FrameStats") +127 .field("ACK", &self.acks) +128 .field("ACK_FREQUENCY", &self.ack_frequency) +129 .field("CONNECTION_CLOSE", &self.connection_close) +130 .field("CRYPTO", &self.crypto) +131 .field("DATA_BLOCKED", &self.data_blocked) +132 .field("DATAGRAM", &self.datagram) +133 .field("HANDSHAKE_DONE", &self.handshake_done) +134 .field("IMMEDIATE_ACK", &self.immediate_ack) +135 .field("MAX_DATA", &self.max_data) +136 .field("MAX_PATH_ID", &self.max_path_id) +137 .field("MAX_STREAM_DATA", &self.max_stream_data) +138 .field("MAX_STREAMS_BIDI", &self.max_streams_bidi) +139 .field("MAX_STREAMS_UNI", &self.max_streams_uni) +140 .field("NEW_CONNECTION_ID", &self.new_connection_id) +141 .field("NEW_TOKEN", &self.new_token) +142 .field("PATHS_BLOCKED", &self.paths_blocked) +143 .field("PATH_ABANDON", &self.path_abandon) +144 .field("PATH_ACK", &self.path_acks) +145 .field("PATH_STATUS_AVAILABLE", &self.path_status_available) +146 .field("PATH_STATUS_BACKUP", &self.path_status_backup) +147 .field("PATH_CHALLENGE", &self.path_challenge) +148 .field("PATH_CIDS_BLOCKED", &self.path_cids_blocked) +149 .field("PATH_NEW_CONNECTION_ID", &self.path_new_connection_id) +150 .field("PATH_RESPONSE", &self.path_response) +151 .field("PATH_RETIRE_CONNECTION_ID", &self.path_retire_connection_id) +152 .field("PING", &self.ping) +153 .field("RESET_STREAM", &self.reset_stream) +154 .field("RETIRE_CONNECTION_ID", &self.retire_connection_id) +155 .field("STREAM_DATA_BLOCKED", &self.stream_data_blocked) +156 .field("STREAMS_BLOCKED_BIDI", &self.streams_blocked_bidi) +157 .field("STREAMS_BLOCKED_UNI", &self.streams_blocked_uni) +158 .field("STOP_SENDING", &self.stop_sending) +159 .field("STREAM", &self.stream) +160 .finish() +161 } +162} +163 +164/// Statistics related to a transmission path +165#[derive(Debug, Default, Copy, Clone, PartialEq, Eq)] +166#[non_exhaustive] +167pub struct PathStats { +168 /// Current best estimate of this connection's latency (round-trip-time) +169 pub rtt: Duration, +170 /// Current congestion window of the connection +171 pub cwnd: u64, +172 /// Congestion events on the connection +173 pub congestion_events: u64, +174 /// The amount of packets lost on this path +175 pub lost_packets: u64, +176 /// The amount of bytes lost on this path +177 pub lost_bytes: u64, +178 /// The amount of packets sent on this path +179 pub sent_packets: u64, +180 /// The amount of PLPMTUD probe packets sent on this path (also counted by `sent_packets`) +181 pub sent_plpmtud_probes: u64, +182 /// The amount of PLPMTUD probe packets lost on this path (ignored by `lost_packets` and +183 /// `lost_bytes`) +184 pub lost_plpmtud_probes: u64, +185 /// The number of times a black hole was detected in the path +186 pub black_holes_detected: u64, +187 /// Largest UDP payload size the path currently supports +188 pub current_mtu: u16, +189} +190 +191/// Connection statistics +192#[derive(Debug, Default, Clone)] +193#[non_exhaustive] +194pub struct ConnectionStats { +195 /// Statistics about UDP datagrams transmitted on a connection +196 pub udp_tx: UdpStats, +197 /// Statistics about UDP datagrams received on a connection +198 pub udp_rx: UdpStats, +199 /// Statistics about frames transmitted on a connection +200 pub frame_tx: FrameStats, +201 /// Statistics about frames received on a connection +202 pub frame_rx: FrameStats, +203} \ No newline at end of file diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/streams/mod.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/streams/mod.rs.html index 3764c8cd9..44a9bbfb2 100644 --- a/pr/323/docs/src/iroh_quinn_proto/connection/streams/mod.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/connection/streams/mod.rs.html @@ -7,7 +7,7 @@ 7use thiserror::Error; 8use tracing::trace; 9 -10use super::spaces::{Retransmits, ThinRetransmits}; +10use super::spaces::Retransmits; 11use crate::{ 12 Dir, StreamId, VarInt, 13 connection::streams::state::{get_or_insert_recv, get_or_insert_send}, diff --git a/pr/323/docs/src/iroh_quinn_proto/connection/streams/state.rs.html b/pr/323/docs/src/iroh_quinn_proto/connection/streams/state.rs.html index 5ad3dee95..dce69a065 100644 --- a/pr/323/docs/src/iroh_quinn_proto/connection/streams/state.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/connection/streams/state.rs.html @@ -4,2096 +4,2047 @@ 4 mem, 5}; 6 -7use bytes::BufMut; -8use rustc_hash::FxHashMap; -9use tracing::{debug, trace}; -10 -11use super::{ -12 PendingStreamsQueue, Recv, Retransmits, Send, SendState, ShouldTransmit, StreamEvent, -13 StreamHalf, ThinRetransmits, -14}; -15use crate::{ -16 Dir, MAX_STREAM_COUNT, Side, StreamId, TransportError, VarInt, -17 coding::{BufMutExt, Encodable}, -18 connection::{qlog::QlogSentPacket, stats::FrameStats}, -19 frame::{self, Frame, FrameStruct, StreamMetaVec}, -20 transport_parameters::TransportParameters, -21}; -22 -23/// Wrapper around `Recv` that facilitates reusing `Recv` instances -24#[derive(Debug)] -25pub(super) enum StreamRecv { -26 /// A `Recv` that is ready to be opened -27 Free(Box<Recv>), -28 /// A `Recv` that has been opened -29 Open(Box<Recv>), -30} -31 -32impl StreamRecv { -33 /// Returns a reference to the inner `Recv` if the stream is open -34 pub(super) fn as_open_recv(&self) -> Option<&Recv> { -35 match self { -36 Self::Open(r) => Some(r), -37 _ => None, -38 } -39 } -40 -41 // Returns a mutable reference to the inner `Recv` if the stream is open -42 pub(super) fn as_open_recv_mut(&mut self) -> Option<&mut Recv> { -43 match self { -44 Self::Open(r) => Some(r), -45 _ => None, -46 } -47 } -48 -49 // Returns the inner `Recv` -50 pub(super) fn into_inner(self) -> Box<Recv> { -51 match self { -52 Self::Free(r) | Self::Open(r) => r, -53 } -54 } -55 -56 // Reinitialize the stream so the inner `Recv` can be reused -57 pub(super) fn free(self, initial_max_data: u64) -> Self { -58 match self { -59 Self::Free(_) => unreachable!("Self::Free on reinit()"), -60 Self::Open(mut recv) => { -61 recv.reinit(initial_max_data); -62 Self::Free(recv) -63 } -64 } -65 } -66} -67 -68#[allow(unreachable_pub)] // fuzzing only -69pub struct StreamsState { -70 pub(super) side: Side, -71 // Set of streams that are currently open, or could be immediately opened by the peer -72 pub(super) send: FxHashMap<StreamId, Option<Box<Send>>>, -73 pub(super) recv: FxHashMap<StreamId, Option<StreamRecv>>, -74 pub(super) free_recv: Vec<StreamRecv>, -75 pub(super) next: [u64; 2], -76 /// Maximum number of locally-initiated streams that may be opened over the lifetime of the -77 /// connection so far, per direction -78 pub(super) max: [u64; 2], -79 /// Maximum number of remotely-initiated streams that may be opened over the lifetime of the -80 /// connection so far, per direction -81 pub(super) max_remote: [u64; 2], -82 /// Value of `max_remote` most recently transmitted to the peer in a `MAX_STREAMS` frame -83 sent_max_remote: [u64; 2], -84 /// Number of streams that we've given the peer permission to open and which aren't fully closed -85 pub(super) allocated_remote_count: [u64; 2], -86 /// Size of the desired stream flow control window. May be smaller than `allocated_remote_count` -87 /// due to `set_max_concurrent` calls. -88 max_concurrent_remote_count: [u64; 2], -89 /// Whether `max_concurrent_remote_count` has ever changed -90 flow_control_adjusted: bool, -91 /// Lowest remotely-initiated stream index that haven't actually been opened by the peer -92 pub(super) next_remote: [u64; 2], -93 /// Whether the remote endpoint has opened any streams the application doesn't know about yet, -94 /// per directionality -95 opened: [bool; 2], -96 // Next to report to the application, once opened -97 pub(super) next_reported_remote: [u64; 2], -98 /// Number of outbound streams -99 /// -100 /// This differs from `self.send.len()` in that it does not include streams that the peer is -101 /// permitted to open but which have not yet been opened. -102 pub(super) send_streams: usize, -103 /// Streams with outgoing data queued, sorted by priority -104 pub(super) pending: PendingStreamsQueue, -105 -106 events: VecDeque<StreamEvent>, -107 /// Streams blocked on connection-level flow control or stream window space -108 /// -109 /// Streams are only added to this list when a write fails. -110 pub(super) connection_blocked: Vec<StreamId>, -111 /// Connection-level flow control budget dictated by the peer -112 pub(super) max_data: u64, -113 /// The initial receive window -114 receive_window: u64, -115 /// Limit on incoming data, which is transmitted through `MAX_DATA` frames -116 local_max_data: u64, -117 /// The last value of `MAX_DATA` which had been queued for transmission in -118 /// an outgoing `MAX_DATA` frame -119 sent_max_data: VarInt, -120 /// Sum of current offsets of all send streams. -121 pub(super) data_sent: u64, -122 /// Sum of end offsets of all receive streams. Includes gaps, so it's an upper bound. -123 data_recvd: u64, -124 /// Total quantity of unacknowledged outgoing data -125 pub(super) unacked_data: u64, -126 /// Configured upper bound for `unacked_data`. -127 /// -128 /// Note this may be less than `unacked_data` if the user has set a new value. -129 pub(super) send_window: u64, -130 /// Configured upper bound for how much unacked data the peer can send us per stream -131 pub(super) stream_receive_window: u64, -132 -133 // Pertinent state from the TransportParameters supplied by the peer -134 initial_max_stream_data_uni: VarInt, -135 initial_max_stream_data_bidi_local: VarInt, -136 initial_max_stream_data_bidi_remote: VarInt, -137 -138 /// The shrink to be applied to local_max_data when receive_window is shrunk -139 receive_window_shrink_debt: u64, -140} -141 -142impl StreamsState { -143 #[allow(unreachable_pub)] // fuzzing only -144 pub fn new( -145 side: Side, -146 max_remote_uni: VarInt, -147 max_remote_bi: VarInt, -148 send_window: u64, -149 receive_window: VarInt, -150 stream_receive_window: VarInt, -151 ) -> Self { -152 let mut this = Self { -153 side, -154 send: FxHashMap::default(), -155 recv: FxHashMap::default(), -156 free_recv: Vec::new(), -157 next: [0, 0], -158 max: [0, 0], -159 max_remote: [max_remote_bi.into(), max_remote_uni.into()], -160 sent_max_remote: [max_remote_bi.into(), max_remote_uni.into()], -161 allocated_remote_count: [max_remote_bi.into(), max_remote_uni.into()], -162 max_concurrent_remote_count: [max_remote_bi.into(), max_remote_uni.into()], -163 flow_control_adjusted: false, -164 next_remote: [0, 0], -165 opened: [false, false], -166 next_reported_remote: [0, 0], -167 send_streams: 0, -168 pending: PendingStreamsQueue::new(), -169 events: VecDeque::new(), -170 connection_blocked: Vec::new(), -171 max_data: 0, -172 receive_window: receive_window.into(), -173 local_max_data: receive_window.into(), -174 sent_max_data: receive_window, -175 data_sent: 0, -176 data_recvd: 0, -177 unacked_data: 0, -178 send_window, -179 stream_receive_window: stream_receive_window.into(), -180 initial_max_stream_data_uni: 0u32.into(), -181 initial_max_stream_data_bidi_local: 0u32.into(), -182 initial_max_stream_data_bidi_remote: 0u32.into(), -183 receive_window_shrink_debt: 0, -184 }; -185 -186 for dir in Dir::iter() { -187 for i in 0..this.max_remote[dir as usize] { -188 this.insert(true, StreamId::new(!side, dir, i)); -189 } -190 } -191 -192 this -193 } -194 -195 pub(crate) fn set_params(&mut self, params: &TransportParameters) { -196 self.initial_max_stream_data_uni = params.initial_max_stream_data_uni; -197 self.initial_max_stream_data_bidi_local = params.initial_max_stream_data_bidi_local; -198 self.initial_max_stream_data_bidi_remote = params.initial_max_stream_data_bidi_remote; -199 self.max[Dir::Bi as usize] = params.initial_max_streams_bidi.into(); -200 self.max[Dir::Uni as usize] = params.initial_max_streams_uni.into(); -201 self.received_max_data(params.initial_max_data); -202 for i in 0..self.max_remote[Dir::Bi as usize] { -203 let id = StreamId::new(!self.side, Dir::Bi, i); -204 if let Some(s) = self.send.get_mut(&id).and_then(|s| s.as_mut()) { -205 s.max_data = params.initial_max_stream_data_bidi_local.into(); -206 } -207 } -208 } -209 -210 /// Ensure we have space for at least a full flow control window of remotely-initiated streams -211 /// to be open, and notify the peer if the window has moved -212 fn ensure_remote_streams(&mut self, dir: Dir) { -213 let new_count = self.max_concurrent_remote_count[dir as usize] -214 .saturating_sub(self.allocated_remote_count[dir as usize]); -215 for i in 0..new_count { -216 let id = StreamId::new(!self.side, dir, self.max_remote[dir as usize] + i); -217 self.insert(true, id); -218 } -219 self.allocated_remote_count[dir as usize] += new_count; -220 self.max_remote[dir as usize] += new_count; -221 } -222 -223 pub(crate) fn zero_rtt_rejected(&mut self) { -224 // Revert to initial state for outgoing streams -225 for dir in Dir::iter() { -226 for i in 0..self.next[dir as usize] { -227 // We don't bother calling `stream_freed` here because we explicitly reset affected -228 // counters below. -229 let id = StreamId::new(self.side, dir, i); -230 self.send.remove(&id).unwrap(); -231 if let Dir::Bi = dir { -232 self.recv.remove(&id).unwrap(); -233 } -234 } -235 self.next[dir as usize] = 0; -236 -237 // If 0-RTT was rejected, any flow control frames we sent were lost. -238 if self.flow_control_adjusted { -239 // Conservative approximation of whatever we sent in transport parameters -240 self.sent_max_remote[dir as usize] = 0; -241 } -242 } -243 -244 self.pending.clear(); -245 self.send_streams = 0; -246 self.data_sent = 0; -247 self.connection_blocked.clear(); -248 } -249 -250 /// Process incoming stream frame -251 /// -252 /// If successful, returns whether a `MAX_DATA` frame needs to be transmitted -253 pub(crate) fn received( -254 &mut self, -255 frame: frame::Stream, -256 payload_len: usize, -257 ) -> Result<ShouldTransmit, TransportError> { -258 let id = frame.id; -259 self.validate_receive_id(id).inspect_err(|_e| { -260 debug!("received illegal STREAM frame"); -261 })?; -262 -263 let rs = match self -264 .recv -265 .get_mut(&id) -266 .map(get_or_insert_recv(self.stream_receive_window)) -267 { -268 Some(rs) => rs, -269 None => { -270 trace!("dropping frame for closed stream"); -271 return Ok(ShouldTransmit(false)); -272 } -273 }; -274 -275 if !rs.is_receiving() { -276 trace!("dropping frame for finished stream"); -277 return Ok(ShouldTransmit(false)); -278 } -279 -280 let (new_bytes, closed) = -281 rs.ingest(frame, payload_len, self.data_recvd, self.local_max_data)?; -282 self.data_recvd = self.data_recvd.saturating_add(new_bytes); -283 -284 if !rs.stopped { -285 self.on_stream_frame(true, id); -286 return Ok(ShouldTransmit(false)); -287 } -288 -289 // Stopped streams become closed instantly on FIN, so check whether we need to clean up -290 if closed { -291 let rs = self.recv.remove(&id).flatten().unwrap(); -292 self.stream_recv_freed(id, rs); -293 } -294 -295 // We don't buffer data on stopped streams, so issue flow control credit immediately -296 Ok(self.add_read_credits(new_bytes)) -297 } -298 -299 /// Process incoming RESET_STREAM frame -300 /// -301 /// If successful, returns whether a `MAX_DATA` frame needs to be transmitted -302 #[allow(unreachable_pub)] // fuzzing only -303 pub fn received_reset( -304 &mut self, -305 frame: frame::ResetStream, -306 ) -> Result<ShouldTransmit, TransportError> { -307 let frame::ResetStream { -308 id, -309 error_code, -310 final_offset, -311 } = frame; -312 self.validate_receive_id(id).inspect_err(|_e| { -313 debug!("received illegal RESET_STREAM frame"); -314 })?; -315 -316 let rs = match self -317 .recv -318 .get_mut(&id) -319 .map(get_or_insert_recv(self.stream_receive_window)) -320 { -321 Some(stream) => stream, -322 None => { -323 trace!("received RESET_STREAM on closed stream"); -324 return Ok(ShouldTransmit(false)); -325 } -326 }; -327 -328 // State transition -329 if !rs.reset( -330 error_code, -331 final_offset, -332 self.data_recvd, -333 self.local_max_data, -334 )? { -335 // Redundant reset -336 return Ok(ShouldTransmit(false)); -337 } -338 let bytes_read = rs.assembler.bytes_read(); -339 let stopped = rs.stopped; -340 let end = rs.end; -341 if stopped { -342 // Stopped streams should be disposed immediately on reset -343 let rs = self.recv.remove(&id).flatten().unwrap(); -344 self.stream_recv_freed(id, rs); -345 } -346 self.on_stream_frame(!stopped, id); -347 -348 // Update connection-level flow control -349 Ok(if bytes_read != final_offset.into_inner() { -350 // bytes_read is always <= end, so this won't underflow. -351 self.data_recvd = self -352 .data_recvd -353 .saturating_add(u64::from(final_offset) - end); -354 self.add_read_credits(u64::from(final_offset) - bytes_read) -355 } else { -356 ShouldTransmit(false) -357 }) -358 } -359 -360 /// Process incoming `STOP_SENDING` frame -361 #[allow(unreachable_pub)] // fuzzing only -362 pub fn received_stop_sending(&mut self, id: StreamId, error_code: VarInt) { -363 let max_send_data = self.max_send_data(id); -364 let stream = match self -365 .send -366 .get_mut(&id) -367 .map(get_or_insert_send(max_send_data)) -368 { -369 Some(ss) => ss, -370 None => return, -371 }; -372 -373 if stream.try_stop(error_code) { -374 self.events -375 .push_back(StreamEvent::Stopped { id, error_code }); -376 self.on_stream_frame(false, id); -377 } -378 } -379 -380 pub(crate) fn reset_acked(&mut self, id: StreamId) { -381 match self.send.entry(id) { -382 hash_map::Entry::Vacant(_) => {} -383 hash_map::Entry::Occupied(e) => { -384 if let Some(SendState::ResetSent) = e.get().as_ref().map(|s| s.state) { -385 e.remove_entry(); -386 self.stream_freed(id, StreamHalf::Send); -387 } -388 } -389 } -390 } -391 -392 /// Whether any stream data is queued, regardless of control frames -393 pub(crate) fn can_send_stream_data(&self) -> bool { -394 // Reset streams may linger in the pending stream list, but will never produce stream frames -395 self.pending.iter().any(|stream| { -396 self.send -397 .get(&stream.id) -398 .and_then(|s| s.as_ref()) -399 .is_some_and(|s| !s.is_reset()) -400 }) -401 } -402 -403 /// Whether MAX_STREAM_DATA frames could be sent for stream `id` -404 pub(crate) fn can_send_flow_control(&self, id: StreamId) -> bool { -405 self.recv -406 .get(&id) -407 .and_then(|s| s.as_ref()) -408 .and_then(|s| s.as_open_recv()) -409 .is_some_and(|s| s.can_send_flow_control()) -410 } -411 -412 pub(in crate::connection) fn write_control_frames( -413 &mut self, -414 buf: &mut impl BufMut, -415 pending: &mut Retransmits, -416 retransmits: &mut ThinRetransmits, -417 stats: &mut FrameStats, -418 #[allow(unused)] qlog: &mut QlogSentPacket, -419 ) { -420 // RESET_STREAM -421 while buf.remaining_mut() > frame::ResetStream::SIZE_BOUND { -422 let (id, error_code) = match pending.reset_stream.pop() { +7use rustc_hash::FxHashMap; +8use tracing::{debug, trace}; +9 +10use super::{ +11 PendingStreamsQueue, Recv, Retransmits, Send, SendState, ShouldTransmit, StreamEvent, +12 StreamHalf, +13}; +14use crate::{ +15 Dir, MAX_STREAM_COUNT, Side, StreamId, TransportError, VarInt, +16 connection::{PacketBuilder, stats::FrameStats}, +17 frame::{self, FrameStruct}, +18 transport_parameters::TransportParameters, +19}; +20 +21/// Wrapper around `Recv` that facilitates reusing `Recv` instances +22#[derive(Debug)] +23pub(super) enum StreamRecv { +24 /// A `Recv` that is ready to be opened +25 Free(Box<Recv>), +26 /// A `Recv` that has been opened +27 Open(Box<Recv>), +28} +29 +30impl StreamRecv { +31 /// Returns a reference to the inner `Recv` if the stream is open +32 pub(super) fn as_open_recv(&self) -> Option<&Recv> { +33 match self { +34 Self::Open(r) => Some(r), +35 _ => None, +36 } +37 } +38 +39 // Returns a mutable reference to the inner `Recv` if the stream is open +40 pub(super) fn as_open_recv_mut(&mut self) -> Option<&mut Recv> { +41 match self { +42 Self::Open(r) => Some(r), +43 _ => None, +44 } +45 } +46 +47 // Returns the inner `Recv` +48 pub(super) fn into_inner(self) -> Box<Recv> { +49 match self { +50 Self::Free(r) | Self::Open(r) => r, +51 } +52 } +53 +54 // Reinitialize the stream so the inner `Recv` can be reused +55 pub(super) fn free(self, initial_max_data: u64) -> Self { +56 match self { +57 Self::Free(_) => unreachable!("Self::Free on reinit()"), +58 Self::Open(mut recv) => { +59 recv.reinit(initial_max_data); +60 Self::Free(recv) +61 } +62 } +63 } +64} +65 +66#[allow(unreachable_pub)] // fuzzing only +67pub struct StreamsState { +68 pub(super) side: Side, +69 // Set of streams that are currently open, or could be immediately opened by the peer +70 pub(super) send: FxHashMap<StreamId, Option<Box<Send>>>, +71 pub(super) recv: FxHashMap<StreamId, Option<StreamRecv>>, +72 pub(super) free_recv: Vec<StreamRecv>, +73 pub(super) next: [u64; 2], +74 /// Maximum number of locally-initiated streams that may be opened over the lifetime of the +75 /// connection so far, per direction +76 pub(super) max: [u64; 2], +77 /// Maximum number of remotely-initiated streams that may be opened over the lifetime of the +78 /// connection so far, per direction +79 pub(super) max_remote: [u64; 2], +80 /// Value of `max_remote` most recently transmitted to the peer in a `MAX_STREAMS` frame +81 sent_max_remote: [u64; 2], +82 /// Number of streams that we've given the peer permission to open and which aren't fully closed +83 pub(super) allocated_remote_count: [u64; 2], +84 /// Size of the desired stream flow control window. May be smaller than `allocated_remote_count` +85 /// due to `set_max_concurrent` calls. +86 max_concurrent_remote_count: [u64; 2], +87 /// Whether `max_concurrent_remote_count` has ever changed +88 flow_control_adjusted: bool, +89 /// Lowest remotely-initiated stream index that haven't actually been opened by the peer +90 pub(super) next_remote: [u64; 2], +91 /// Whether the remote endpoint has opened any streams the application doesn't know about yet, +92 /// per directionality +93 opened: [bool; 2], +94 // Next to report to the application, once opened +95 pub(super) next_reported_remote: [u64; 2], +96 /// Number of outbound streams +97 /// +98 /// This differs from `self.send.len()` in that it does not include streams that the peer is +99 /// permitted to open but which have not yet been opened. +100 pub(super) send_streams: usize, +101 /// Streams with outgoing data queued, sorted by priority +102 pub(super) pending: PendingStreamsQueue, +103 +104 events: VecDeque<StreamEvent>, +105 /// Streams blocked on connection-level flow control or stream window space +106 /// +107 /// Streams are only added to this list when a write fails. +108 pub(super) connection_blocked: Vec<StreamId>, +109 /// Connection-level flow control budget dictated by the peer +110 pub(super) max_data: u64, +111 /// The initial receive window +112 receive_window: u64, +113 /// Limit on incoming data, which is transmitted through `MAX_DATA` frames +114 local_max_data: u64, +115 /// The last value of `MAX_DATA` which had been queued for transmission in +116 /// an outgoing `MAX_DATA` frame +117 sent_max_data: VarInt, +118 /// Sum of current offsets of all send streams. +119 pub(super) data_sent: u64, +120 /// Sum of end offsets of all receive streams. Includes gaps, so it's an upper bound. +121 data_recvd: u64, +122 /// Total quantity of unacknowledged outgoing data +123 pub(super) unacked_data: u64, +124 /// Configured upper bound for `unacked_data`. +125 /// +126 /// Note this may be less than `unacked_data` if the user has set a new value. +127 pub(super) send_window: u64, +128 /// Configured upper bound for how much unacked data the peer can send us per stream +129 pub(super) stream_receive_window: u64, +130 +131 // Pertinent state from the TransportParameters supplied by the peer +132 initial_max_stream_data_uni: VarInt, +133 initial_max_stream_data_bidi_local: VarInt, +134 initial_max_stream_data_bidi_remote: VarInt, +135 +136 /// The shrink to be applied to local_max_data when receive_window is shrunk +137 receive_window_shrink_debt: u64, +138} +139 +140impl StreamsState { +141 #[allow(unreachable_pub)] // fuzzing only +142 pub fn new( +143 side: Side, +144 max_remote_uni: VarInt, +145 max_remote_bi: VarInt, +146 send_window: u64, +147 receive_window: VarInt, +148 stream_receive_window: VarInt, +149 ) -> Self { +150 let mut this = Self { +151 side, +152 send: FxHashMap::default(), +153 recv: FxHashMap::default(), +154 free_recv: Vec::new(), +155 next: [0, 0], +156 max: [0, 0], +157 max_remote: [max_remote_bi.into(), max_remote_uni.into()], +158 sent_max_remote: [max_remote_bi.into(), max_remote_uni.into()], +159 allocated_remote_count: [max_remote_bi.into(), max_remote_uni.into()], +160 max_concurrent_remote_count: [max_remote_bi.into(), max_remote_uni.into()], +161 flow_control_adjusted: false, +162 next_remote: [0, 0], +163 opened: [false, false], +164 next_reported_remote: [0, 0], +165 send_streams: 0, +166 pending: PendingStreamsQueue::new(), +167 events: VecDeque::new(), +168 connection_blocked: Vec::new(), +169 max_data: 0, +170 receive_window: receive_window.into(), +171 local_max_data: receive_window.into(), +172 sent_max_data: receive_window, +173 data_sent: 0, +174 data_recvd: 0, +175 unacked_data: 0, +176 send_window, +177 stream_receive_window: stream_receive_window.into(), +178 initial_max_stream_data_uni: 0u32.into(), +179 initial_max_stream_data_bidi_local: 0u32.into(), +180 initial_max_stream_data_bidi_remote: 0u32.into(), +181 receive_window_shrink_debt: 0, +182 }; +183 +184 for dir in Dir::iter() { +185 for i in 0..this.max_remote[dir as usize] { +186 this.insert(true, StreamId::new(!side, dir, i)); +187 } +188 } +189 +190 this +191 } +192 +193 pub(crate) fn set_params(&mut self, params: &TransportParameters) { +194 self.initial_max_stream_data_uni = params.initial_max_stream_data_uni; +195 self.initial_max_stream_data_bidi_local = params.initial_max_stream_data_bidi_local; +196 self.initial_max_stream_data_bidi_remote = params.initial_max_stream_data_bidi_remote; +197 self.max[Dir::Bi as usize] = params.initial_max_streams_bidi.into(); +198 self.max[Dir::Uni as usize] = params.initial_max_streams_uni.into(); +199 self.received_max_data(params.initial_max_data); +200 for i in 0..self.max_remote[Dir::Bi as usize] { +201 let id = StreamId::new(!self.side, Dir::Bi, i); +202 if let Some(s) = self.send.get_mut(&id).and_then(|s| s.as_mut()) { +203 s.max_data = params.initial_max_stream_data_bidi_local.into(); +204 } +205 } +206 } +207 +208 /// Ensure we have space for at least a full flow control window of remotely-initiated streams +209 /// to be open, and notify the peer if the window has moved +210 fn ensure_remote_streams(&mut self, dir: Dir) { +211 let new_count = self.max_concurrent_remote_count[dir as usize] +212 .saturating_sub(self.allocated_remote_count[dir as usize]); +213 for i in 0..new_count { +214 let id = StreamId::new(!self.side, dir, self.max_remote[dir as usize] + i); +215 self.insert(true, id); +216 } +217 self.allocated_remote_count[dir as usize] += new_count; +218 self.max_remote[dir as usize] += new_count; +219 } +220 +221 pub(crate) fn zero_rtt_rejected(&mut self) { +222 // Revert to initial state for outgoing streams +223 for dir in Dir::iter() { +224 for i in 0..self.next[dir as usize] { +225 // We don't bother calling `stream_freed` here because we explicitly reset affected +226 // counters below. +227 let id = StreamId::new(self.side, dir, i); +228 self.send.remove(&id).unwrap(); +229 if let Dir::Bi = dir { +230 self.recv.remove(&id).unwrap(); +231 } +232 } +233 self.next[dir as usize] = 0; +234 +235 // If 0-RTT was rejected, any flow control frames we sent were lost. +236 if self.flow_control_adjusted { +237 // Conservative approximation of whatever we sent in transport parameters +238 self.sent_max_remote[dir as usize] = 0; +239 } +240 } +241 +242 self.pending.clear(); +243 self.send_streams = 0; +244 self.data_sent = 0; +245 self.connection_blocked.clear(); +246 } +247 +248 /// Process incoming stream frame +249 /// +250 /// If successful, returns whether a `MAX_DATA` frame needs to be transmitted +251 pub(crate) fn received( +252 &mut self, +253 frame: frame::Stream, +254 payload_len: usize, +255 ) -> Result<ShouldTransmit, TransportError> { +256 let id = frame.id; +257 self.validate_receive_id(id).inspect_err(|_e| { +258 debug!("received illegal STREAM frame"); +259 })?; +260 +261 let rs = match self +262 .recv +263 .get_mut(&id) +264 .map(get_or_insert_recv(self.stream_receive_window)) +265 { +266 Some(rs) => rs, +267 None => { +268 trace!("dropping frame for closed stream"); +269 return Ok(ShouldTransmit(false)); +270 } +271 }; +272 +273 if !rs.is_receiving() { +274 trace!("dropping frame for finished stream"); +275 return Ok(ShouldTransmit(false)); +276 } +277 +278 let (new_bytes, closed) = +279 rs.ingest(frame, payload_len, self.data_recvd, self.local_max_data)?; +280 self.data_recvd = self.data_recvd.saturating_add(new_bytes); +281 +282 if !rs.stopped { +283 self.on_stream_frame(true, id); +284 return Ok(ShouldTransmit(false)); +285 } +286 +287 // Stopped streams become closed instantly on FIN, so check whether we need to clean up +288 if closed { +289 let rs = self.recv.remove(&id).flatten().unwrap(); +290 self.stream_recv_freed(id, rs); +291 } +292 +293 // We don't buffer data on stopped streams, so issue flow control credit immediately +294 Ok(self.add_read_credits(new_bytes)) +295 } +296 +297 /// Process incoming RESET_STREAM frame +298 /// +299 /// If successful, returns whether a `MAX_DATA` frame needs to be transmitted +300 #[allow(unreachable_pub)] // fuzzing only +301 pub fn received_reset( +302 &mut self, +303 frame: frame::ResetStream, +304 ) -> Result<ShouldTransmit, TransportError> { +305 let frame::ResetStream { +306 id, +307 error_code, +308 final_offset, +309 } = frame; +310 self.validate_receive_id(id).inspect_err(|_e| { +311 debug!("received illegal RESET_STREAM frame"); +312 })?; +313 +314 let rs = match self +315 .recv +316 .get_mut(&id) +317 .map(get_or_insert_recv(self.stream_receive_window)) +318 { +319 Some(stream) => stream, +320 None => { +321 trace!("received RESET_STREAM on closed stream"); +322 return Ok(ShouldTransmit(false)); +323 } +324 }; +325 +326 // State transition +327 if !rs.reset( +328 error_code, +329 final_offset, +330 self.data_recvd, +331 self.local_max_data, +332 )? { +333 // Redundant reset +334 return Ok(ShouldTransmit(false)); +335 } +336 let bytes_read = rs.assembler.bytes_read(); +337 let stopped = rs.stopped; +338 let end = rs.end; +339 if stopped { +340 // Stopped streams should be disposed immediately on reset +341 let rs = self.recv.remove(&id).flatten().unwrap(); +342 self.stream_recv_freed(id, rs); +343 } +344 self.on_stream_frame(!stopped, id); +345 +346 // Update connection-level flow control +347 Ok(if bytes_read != final_offset.into_inner() { +348 // bytes_read is always <= end, so this won't underflow. +349 self.data_recvd = self +350 .data_recvd +351 .saturating_add(u64::from(final_offset) - end); +352 self.add_read_credits(u64::from(final_offset) - bytes_read) +353 } else { +354 ShouldTransmit(false) +355 }) +356 } +357 +358 /// Process incoming `STOP_SENDING` frame +359 #[allow(unreachable_pub)] // fuzzing only +360 pub fn received_stop_sending(&mut self, id: StreamId, error_code: VarInt) { +361 let max_send_data = self.max_send_data(id); +362 let stream = match self +363 .send +364 .get_mut(&id) +365 .map(get_or_insert_send(max_send_data)) +366 { +367 Some(ss) => ss, +368 None => return, +369 }; +370 +371 if stream.try_stop(error_code) { +372 self.events +373 .push_back(StreamEvent::Stopped { id, error_code }); +374 self.on_stream_frame(false, id); +375 } +376 } +377 +378 pub(crate) fn reset_acked(&mut self, id: StreamId) { +379 match self.send.entry(id) { +380 hash_map::Entry::Vacant(_) => {} +381 hash_map::Entry::Occupied(e) => { +382 if let Some(SendState::ResetSent) = e.get().as_ref().map(|s| s.state) { +383 e.remove_entry(); +384 self.stream_freed(id, StreamHalf::Send); +385 } +386 } +387 } +388 } +389 +390 /// Whether any stream data is queued, regardless of control frames +391 pub(crate) fn can_send_stream_data(&self) -> bool { +392 // Reset streams may linger in the pending stream list, but will never produce stream frames +393 self.pending.iter().any(|stream| { +394 self.send +395 .get(&stream.id) +396 .and_then(|s| s.as_ref()) +397 .is_some_and(|s| !s.is_reset()) +398 }) +399 } +400 +401 /// Whether MAX_STREAM_DATA frames could be sent for stream `id` +402 pub(crate) fn can_send_flow_control(&self, id: StreamId) -> bool { +403 self.recv +404 .get(&id) +405 .and_then(|s| s.as_ref()) +406 .and_then(|s| s.as_open_recv()) +407 .is_some_and(|s| s.can_send_flow_control()) +408 } +409 +410 pub(in crate::connection) fn write_control_frames<'a, 'b>( +411 &mut self, +412 builder: &mut PacketBuilder<'a, 'b>, +413 pending: &mut Retransmits, +414 stats: &mut FrameStats, +415 ) { +416 // RESET_STREAM +417 while builder.frame_space_remaining() > frame::ResetStream::SIZE_BOUND { +418 let (id, error_code) = match pending.reset_stream.pop() { +419 Some(x) => x, +420 None => break, +421 }; +422 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { 423 Some(x) => x, -424 None => break, +424 None => continue, 425 }; -426 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { -427 Some(x) => x, -428 None => continue, -429 }; -430 trace!(stream = %id, "RESET_STREAM"); -431 retransmits -432 .get_or_create() -433 .reset_stream -434 .push((id, error_code)); -435 let frame = frame::ResetStream { -436 id, -437 error_code, -438 final_offset: VarInt::try_from(stream.offset()).expect("impossibly large offset"), +426 let frame = frame::ResetStream { +427 id, +428 error_code, +429 final_offset: VarInt::try_from(stream.offset()).expect("impossibly large offset"), +430 }; +431 builder.write_frame(frame, stats); +432 } +433 +434 // STOP_SENDING +435 while builder.frame_space_remaining() > frame::StopSending::SIZE_BOUND { +436 let frame = match pending.stop_sending.pop() { +437 Some(x) => x, +438 None => break, 439 }; -440 frame.encode(buf); -441 qlog.frame(&Frame::ResetStream(frame)); -442 stats.reset_stream += 1; -443 } -444 -445 // STOP_SENDING -446 while buf.remaining_mut() > frame::StopSending::SIZE_BOUND { -447 let frame = match pending.stop_sending.pop() { -448 Some(x) => x, -449 None => break, -450 }; -451 // We may need to transmit STOP_SENDING even for streams whose state we have discarded, -452 // because we are able to discard local state for stopped streams immediately upon -453 // receiving FIN, even if the peer still has arbitrarily large amounts of data to -454 // (re)transmit due to loss or unconventional sending strategy. We could fine-tune this -455 // a little by dropping the frame if we specifically know the stream's been reset by the -456 // peer, but we discard that information as soon as the application consumes it, so it -457 // can't be relied upon regardless. -458 trace!(stream = %frame.id, "STOP_SENDING"); -459 frame.encode(buf); -460 qlog.frame(&Frame::StopSending(frame)); -461 retransmits.get_or_create().stop_sending.push(frame); -462 stats.stop_sending += 1; -463 } -464 -465 // MAX_DATA -466 if pending.max_data && buf.remaining_mut() > 9 { -467 pending.max_data = false; +440 // We may need to transmit STOP_SENDING even for streams whose state we have discarded, +441 // because we are able to discard local state for stopped streams immediately upon +442 // receiving FIN, even if the peer still has arbitrarily large amounts of data to +443 // (re)transmit due to loss or unconventional sending strategy. We could fine-tune this +444 // a little by dropping the frame if we specifically know the stream's been reset by the +445 // peer, but we discard that information as soon as the application consumes it, so it +446 // can't be relied upon regardless. +447 builder.write_frame(frame, stats); +448 } +449 +450 // MAX_DATA +451 if pending.max_data && builder.frame_space_remaining() > 9 { +452 pending.max_data = false; +453 +454 // `local_max_data` can grow bigger than `VarInt`. +455 // For transmission inside QUIC frames we need to clamp it to the +456 // maximum allowed `VarInt` size. +457 let max = VarInt::try_from(self.local_max_data).unwrap_or(VarInt::MAX); +458 +459 if max > self.sent_max_data { +460 // Record that a `MAX_DATA` announcing a certain window was sent. This will +461 // suppress enqueuing further `MAX_DATA` frames unless either the previous +462 // transmission was not acknowledged or the window further increased. +463 self.sent_max_data = max; +464 } +465 +466 builder.write_frame(frame::MaxData(max), stats); +467 } 468 -469 // `local_max_data` can grow bigger than `VarInt`. -470 // For transmission inside QUIC frames we need to clamp it to the -471 // maximum allowed `VarInt` size. -472 let max = VarInt::try_from(self.local_max_data).unwrap_or(VarInt::MAX); -473 -474 trace!(value = max.into_inner(), "MAX_DATA"); -475 if max > self.sent_max_data { -476 // Record that a `MAX_DATA` announcing a certain window was sent. This will -477 // suppress enqueuing further `MAX_DATA` frames unless either the previous -478 // transmission was not acknowledged or the window further increased. -479 self.sent_max_data = max; -480 } -481 -482 retransmits.get_or_create().max_data = true; -483 buf.write(frame::FrameType::MaxData); -484 buf.write(max); -485 qlog.frame(&Frame::MaxData(max)); -486 stats.max_data += 1; -487 } +469 // MAX_STREAM_DATA +470 while builder.frame_space_remaining() > 17 { +471 let id = match pending.max_stream_data.iter().next() { +472 Some(x) => *x, +473 None => break, +474 }; +475 pending.max_stream_data.remove(&id); +476 let rs = match self +477 .recv +478 .get_mut(&id) +479 .and_then(|s| s.as_mut()) +480 .and_then(|s| s.as_open_recv_mut()) +481 { +482 Some(x) => x, +483 None => continue, +484 }; +485 if !rs.can_send_flow_control() { +486 continue; +487 } 488 -489 // MAX_STREAM_DATA -490 while buf.remaining_mut() > 17 { -491 let id = match pending.max_stream_data.iter().next() { -492 Some(x) => *x, -493 None => break, -494 }; -495 pending.max_stream_data.remove(&id); -496 let rs = match self -497 .recv -498 .get_mut(&id) -499 .and_then(|s| s.as_mut()) -500 .and_then(|s| s.as_open_recv_mut()) -501 { -502 Some(x) => x, -503 None => continue, -504 }; -505 if !rs.can_send_flow_control() { -506 continue; -507 } -508 retransmits.get_or_create().max_stream_data.insert(id); -509 -510 let (max, _) = rs.max_stream_data(self.stream_receive_window); -511 rs.record_sent_max_stream_data(max); -512 -513 trace!(stream = %id, max = max, "MAX_STREAM_DATA"); -514 buf.write(frame::FrameType::MaxStreamData); -515 buf.write(id); -516 buf.write_var(max); -517 qlog.frame(&Frame::MaxStreamData { id, offset: max }); -518 stats.max_stream_data += 1; -519 } +489 let (max, _) = rs.max_stream_data(self.stream_receive_window); +490 rs.record_sent_max_stream_data(max); +491 builder.write_frame(frame::MaxStreamData { id, offset: max }, stats); +492 } +493 +494 // MAX_STREAMS +495 for dir in Dir::iter() { +496 if !pending.max_stream_id[dir as usize] || builder.frame_space_remaining() <= 9 { +497 continue; +498 } +499 +500 pending.max_stream_id[dir as usize] = false; +501 self.sent_max_remote[dir as usize] = self.max_remote[dir as usize]; +502 let count = self.max_remote[dir as usize]; +503 builder.write_frame(frame::MaxStreams { dir, count }, stats); +504 } +505 } +506 +507 pub(in crate::connection) fn write_stream_frames<'a, 'b>( +508 &mut self, +509 builder: &mut PacketBuilder<'a, 'b>, +510 fair: bool, +511 stats: &mut FrameStats, +512 ) { +513 while builder.frame_space_remaining() > frame::Stream::SIZE_BOUND { +514 // Pop the stream of the highest priority that currently has pending data. If +515 // the stream still has some pending data left after writing, it will be +516 // reinserted, otherwise not +517 let Some(stream) = self.pending.pop() else { +518 break; +519 }; 520 -521 // MAX_STREAMS -522 for dir in Dir::iter() { -523 if !pending.max_stream_id[dir as usize] || buf.remaining_mut() <= 9 { -524 continue; -525 } -526 -527 pending.max_stream_id[dir as usize] = false; -528 retransmits.get_or_create().max_stream_id[dir as usize] = true; -529 self.sent_max_remote[dir as usize] = self.max_remote[dir as usize]; -530 trace!( -531 value = self.max_remote[dir as usize], -532 "MAX_STREAMS ({:?})", dir -533 ); -534 buf.write(match dir { -535 Dir::Uni => frame::FrameType::MaxStreamsUni, -536 Dir::Bi => frame::FrameType::MaxStreamsBidi, -537 }); -538 let count = self.max_remote[dir as usize]; -539 buf.write_var(count); -540 qlog.frame(&Frame::MaxStreams { dir, count }); -541 match dir { -542 Dir::Uni => stats.max_streams_uni += 1, -543 Dir::Bi => stats.max_streams_bidi += 1, +521 let id = stream.id; +522 +523 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { +524 Some(s) => s, +525 // Stream was reset with pending data and the reset was acknowledged +526 None => continue, +527 }; +528 +529 // Reset streams aren't removed from the pending list and still exist while the peer +530 // hasn't acknowledged the reset, but should not generate STREAM frames, so we need to +531 // check for them explicitly. +532 if stream.is_reset() { +533 continue; +534 } +535 +536 // Now that we know the `StreamId`, we can better account for how many bytes +537 // are required to encode it. +538 let max_buf_size = builder.frame_space_remaining() - 1 - VarInt::size(id.into()); +539 let (offsets, encode_length) = stream.pending.poll_transmit(max_buf_size); +540 let fin = offsets.end == stream.pending.offset() +541 && matches!(stream.state, SendState::DataSent { .. }); +542 if fin { +543 stream.fin_pending = false; 544 } -545 } -546 } -547 -548 pub(crate) fn write_stream_frames( -549 &mut self, -550 buf: &mut impl BufMut, -551 fair: bool, -552 #[allow(unused)] qlog: &mut QlogSentPacket, -553 ) -> StreamMetaVec { -554 let mut stream_frames = StreamMetaVec::new(); -555 while buf.remaining_mut() > frame::Stream::SIZE_BOUND { -556 // Pop the stream of the highest priority that currently has pending data. If -557 // the stream still has some pending data left after writing, it will be -558 // reinserted, otherwise not -559 let Some(stream) = self.pending.pop() else { -560 break; -561 }; -562 -563 let id = stream.id; +545 +546 if stream.is_pending() { +547 // If the stream still has pending data, reinsert it, possibly with an updated priority value +548 // Fairness with other streams is achieved by implementing round-robin scheduling, +549 // so that the other streams will have a chance to write data +550 // before we touch this stream again. +551 if fair { +552 self.pending.push_pending(id, stream.priority); +553 } else { +554 self.pending.reinsert_pending(id, stream.priority); +555 } +556 } +557 +558 let range = offsets.clone(); +559 let meta = frame::StreamMeta { id, offsets, fin }; +560 builder.write_frame(meta.encoder(encode_length), stats); +561 stream.pending.get_into(range, builder.buf); +562 } +563 } 564 -565 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { -566 Some(s) => s, -567 // Stream was reset with pending data and the reset was acknowledged -568 None => continue, -569 }; -570 -571 // Reset streams aren't removed from the pending list and still exist while the peer -572 // hasn't acknowledged the reset, but should not generate STREAM frames, so we need to -573 // check for them explicitly. -574 if stream.is_reset() { -575 continue; -576 } -577 -578 // Now that we know the `StreamId`, we can better account for how many bytes -579 // are required to encode it. -580 let max_buf_size = buf.remaining_mut() - 1 - VarInt::size(id.into()); -581 let (offsets, encode_length) = stream.pending.poll_transmit(max_buf_size); -582 let fin = offsets.end == stream.pending.offset() -583 && matches!(stream.state, SendState::DataSent { .. }); -584 if fin { -585 stream.fin_pending = false; -586 } -587 -588 if stream.is_pending() { -589 // If the stream still has pending data, reinsert it, possibly with an updated priority value -590 // Fairness with other streams is achieved by implementing round-robin scheduling, -591 // so that the other streams will have a chance to write data -592 // before we touch this stream again. -593 if fair { -594 self.pending.push_pending(id, stream.priority); -595 } else { -596 self.pending.reinsert_pending(id, stream.priority); -597 } -598 } +565 #[cfg(test)] +566 fn write_frames_for_test(&mut self, capacity: usize, fair: bool) -> frame::StreamMetaVec { +567 let buf = &mut Vec::with_capacity(capacity); +568 let mut tbuf = crate::connection::TransmitBuf::new(buf, std::num::NonZeroUsize::MIN, 1_200); +569 tbuf.start_new_datagram_with_size(capacity); +570 let builder = &mut PacketBuilder::simple_data_buf(&mut tbuf); +571 let stats = &mut FrameStats::default(); +572 self.write_stream_frames(builder, fair, stats); +573 builder.sent_frames().stream_frames.clone() +574 } +575 +576 /// Notify the application that new streams were opened or a stream became readable. +577 fn on_stream_frame(&mut self, notify_readable: bool, stream: StreamId) { +578 if stream.initiator() == self.side { +579 // Notifying about the opening of locally-initiated streams would be redundant. +580 if notify_readable { +581 self.events.push_back(StreamEvent::Readable { id: stream }); +582 } +583 return; +584 } +585 let next = &mut self.next_remote[stream.dir() as usize]; +586 if stream.index() >= *next { +587 *next = stream.index() + 1; +588 self.opened[stream.dir() as usize] = true; +589 } else if notify_readable { +590 self.events.push_back(StreamEvent::Readable { id: stream }); +591 } +592 } +593 +594 pub(crate) fn received_ack_of(&mut self, frame: frame::StreamMeta) { +595 let mut entry = match self.send.entry(frame.id) { +596 hash_map::Entry::Vacant(_) => return, +597 hash_map::Entry::Occupied(e) => e, +598 }; 599 -600 let meta = frame::StreamMeta { id, offsets, fin }; -601 trace!(id = %meta.id, off = meta.offsets.start, len = meta.offsets.end - meta.offsets.start, fin = meta.fin, "STREAM"); -602 meta.encoder(encode_length).encode(buf); -603 qlog.frame_stream(&meta); -604 -605 stream.pending.get_into(meta.offsets.clone(), buf); -606 stream_frames.push(meta); -607 } -608 -609 stream_frames -610 } -611 -612 /// Notify the application that new streams were opened or a stream became readable. -613 fn on_stream_frame(&mut self, notify_readable: bool, stream: StreamId) { -614 if stream.initiator() == self.side { -615 // Notifying about the opening of locally-initiated streams would be redundant. -616 if notify_readable { -617 self.events.push_back(StreamEvent::Readable { id: stream }); -618 } -619 return; +600 let stream = match entry.get_mut().as_mut() { +601 Some(s) => s, +602 None => { +603 // Because we only call this after sending data on this stream, +604 // this closure should be unreachable. If we did somehow screw that up, +605 // then we might hit an underflow below with unpredictable effects down +606 // the line. Best to short-circuit. +607 return; +608 } +609 }; +610 +611 if stream.is_reset() { +612 // We account for outstanding data on reset streams at time of reset +613 return; +614 } +615 let id = frame.id; +616 self.unacked_data -= frame.offsets.end - frame.offsets.start; +617 if !stream.ack(frame) { +618 // The stream is unfinished or may still need retransmits +619 return; 620 } -621 let next = &mut self.next_remote[stream.dir() as usize]; -622 if stream.index() >= *next { -623 *next = stream.index() + 1; -624 self.opened[stream.dir() as usize] = true; -625 } else if notify_readable { -626 self.events.push_back(StreamEvent::Readable { id: stream }); -627 } -628 } -629 -630 pub(crate) fn received_ack_of(&mut self, frame: frame::StreamMeta) { -631 let mut entry = match self.send.entry(frame.id) { -632 hash_map::Entry::Vacant(_) => return, -633 hash_map::Entry::Occupied(e) => e, -634 }; -635 -636 let stream = match entry.get_mut().as_mut() { -637 Some(s) => s, -638 None => { -639 // Because we only call this after sending data on this stream, -640 // this closure should be unreachable. If we did somehow screw that up, -641 // then we might hit an underflow below with unpredictable effects down -642 // the line. Best to short-circuit. -643 return; -644 } -645 }; -646 -647 if stream.is_reset() { -648 // We account for outstanding data on reset streams at time of reset -649 return; -650 } -651 let id = frame.id; -652 self.unacked_data -= frame.offsets.end - frame.offsets.start; -653 if !stream.ack(frame) { -654 // The stream is unfinished or may still need retransmits -655 return; -656 } -657 -658 entry.remove_entry(); -659 self.stream_freed(id, StreamHalf::Send); -660 self.events.push_back(StreamEvent::Finished { id }); -661 } -662 -663 pub(crate) fn retransmit(&mut self, frame: frame::StreamMeta) { -664 let stream = match self.send.get_mut(&frame.id).and_then(|s| s.as_mut()) { -665 // Loss of data on a closed stream is a noop -666 None => return, -667 Some(x) => x, -668 }; -669 if !stream.is_pending() { -670 self.pending.push_pending(frame.id, stream.priority); -671 } -672 stream.fin_pending |= frame.fin; -673 stream.pending.retransmit(frame.offsets); -674 } -675 -676 pub(crate) fn retransmit_all_for_0rtt(&mut self) { -677 for dir in Dir::iter() { -678 for index in 0..self.next[dir as usize] { -679 let id = StreamId::new(Side::Client, dir, index); -680 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { -681 Some(stream) => stream, -682 None => continue, -683 }; -684 if stream.pending.is_fully_acked() && !stream.fin_pending { -685 // Stream data can't be acked in 0-RTT, so we must not have sent anything on -686 // this stream -687 continue; -688 } -689 if !stream.is_pending() { -690 self.pending.push_pending(id, stream.priority); -691 } -692 stream.pending.retransmit_all_for_0rtt(); -693 } -694 } -695 } -696 -697 pub(crate) fn received_max_streams( -698 &mut self, -699 dir: Dir, -700 count: u64, -701 ) -> Result<(), TransportError> { -702 if count > MAX_STREAM_COUNT { -703 return Err(TransportError::FRAME_ENCODING_ERROR( -704 "unrepresentable stream limit", -705 )); -706 } -707 -708 let current = &mut self.max[dir as usize]; -709 if count > *current { -710 *current = count; -711 self.events.push_back(StreamEvent::Available { dir }); -712 } -713 -714 Ok(()) -715 } -716 -717 /// Handle increase to connection-level flow control limit -718 pub(crate) fn received_max_data(&mut self, n: VarInt) { -719 self.max_data = self.max_data.max(n.into()); -720 } -721 -722 pub(crate) fn received_max_stream_data( -723 &mut self, -724 id: StreamId, -725 offset: u64, -726 ) -> Result<(), TransportError> { -727 if id.initiator() != self.side && id.dir() == Dir::Uni { -728 debug!("got MAX_STREAM_DATA on recv-only {}", id); -729 return Err(TransportError::STREAM_STATE_ERROR( -730 "MAX_STREAM_DATA on recv-only stream", -731 )); -732 } +621 +622 entry.remove_entry(); +623 self.stream_freed(id, StreamHalf::Send); +624 self.events.push_back(StreamEvent::Finished { id }); +625 } +626 +627 pub(crate) fn retransmit(&mut self, frame: frame::StreamMeta) { +628 let stream = match self.send.get_mut(&frame.id).and_then(|s| s.as_mut()) { +629 // Loss of data on a closed stream is a noop +630 None => return, +631 Some(x) => x, +632 }; +633 if !stream.is_pending() { +634 self.pending.push_pending(frame.id, stream.priority); +635 } +636 stream.fin_pending |= frame.fin; +637 stream.pending.retransmit(frame.offsets); +638 } +639 +640 pub(crate) fn retransmit_all_for_0rtt(&mut self) { +641 for dir in Dir::iter() { +642 for index in 0..self.next[dir as usize] { +643 let id = StreamId::new(Side::Client, dir, index); +644 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { +645 Some(stream) => stream, +646 None => continue, +647 }; +648 if stream.pending.is_fully_acked() && !stream.fin_pending { +649 // Stream data can't be acked in 0-RTT, so we must not have sent anything on +650 // this stream +651 continue; +652 } +653 if !stream.is_pending() { +654 self.pending.push_pending(id, stream.priority); +655 } +656 stream.pending.retransmit_all_for_0rtt(); +657 } +658 } +659 } +660 +661 pub(crate) fn received_max_streams( +662 &mut self, +663 dir: Dir, +664 count: u64, +665 ) -> Result<(), TransportError> { +666 if count > MAX_STREAM_COUNT { +667 return Err(TransportError::FRAME_ENCODING_ERROR( +668 "unrepresentable stream limit", +669 )); +670 } +671 +672 let current = &mut self.max[dir as usize]; +673 if count > *current { +674 *current = count; +675 self.events.push_back(StreamEvent::Available { dir }); +676 } +677 +678 Ok(()) +679 } +680 +681 /// Handle increase to connection-level flow control limit +682 pub(crate) fn received_max_data(&mut self, n: VarInt) { +683 self.max_data = self.max_data.max(n.into()); +684 } +685 +686 pub(crate) fn received_max_stream_data( +687 &mut self, +688 id: StreamId, +689 offset: u64, +690 ) -> Result<(), TransportError> { +691 if id.initiator() != self.side && id.dir() == Dir::Uni { +692 debug!("got MAX_STREAM_DATA on recv-only {}", id); +693 return Err(TransportError::STREAM_STATE_ERROR( +694 "MAX_STREAM_DATA on recv-only stream", +695 )); +696 } +697 +698 let write_limit = self.write_limit(); +699 let max_send_data = self.max_send_data(id); +700 if let Some(ss) = self +701 .send +702 .get_mut(&id) +703 .map(get_or_insert_send(max_send_data)) +704 { +705 if ss.increase_max_data(offset) { +706 if write_limit > 0 { +707 self.events.push_back(StreamEvent::Writable { id }); +708 } else if !ss.connection_blocked { +709 // The stream is still blocked on the connection flow control +710 // window. In order to get unblocked when the window relaxes +711 // it needs to be in the connection blocked list. +712 ss.connection_blocked = true; +713 self.connection_blocked.push(id); +714 } +715 } +716 } else if id.initiator() == self.side && self.is_local_unopened(id) { +717 debug!("got MAX_STREAM_DATA on unopened {}", id); +718 return Err(TransportError::STREAM_STATE_ERROR( +719 "MAX_STREAM_DATA on unopened stream", +720 )); +721 } +722 +723 self.on_stream_frame(false, id); +724 Ok(()) +725 } +726 +727 /// Returns the maximum amount of data this is allowed to be written on the connection +728 pub(crate) fn write_limit(&self) -> u64 { +729 (self.max_data - self.data_sent) +730 // `send_window` can be set after construction to something *less* than `unacked_data` +731 .min(self.send_window.saturating_sub(self.unacked_data)) +732 } 733 -734 let write_limit = self.write_limit(); -735 let max_send_data = self.max_send_data(id); -736 if let Some(ss) = self -737 .send -738 .get_mut(&id) -739 .map(get_or_insert_send(max_send_data)) -740 { -741 if ss.increase_max_data(offset) { -742 if write_limit > 0 { -743 self.events.push_back(StreamEvent::Writable { id }); -744 } else if !ss.connection_blocked { -745 // The stream is still blocked on the connection flow control -746 // window. In order to get unblocked when the window relaxes -747 // it needs to be in the connection blocked list. -748 ss.connection_blocked = true; -749 self.connection_blocked.push(id); -750 } -751 } -752 } else if id.initiator() == self.side && self.is_local_unopened(id) { -753 debug!("got MAX_STREAM_DATA on unopened {}", id); -754 return Err(TransportError::STREAM_STATE_ERROR( -755 "MAX_STREAM_DATA on unopened stream", -756 )); +734 /// Yield stream events +735 pub(crate) fn poll(&mut self) -> Option<StreamEvent> { +736 if let Some(dir) = Dir::iter().find(|&i| mem::replace(&mut self.opened[i as usize], false)) +737 { +738 return Some(StreamEvent::Opened { dir }); +739 } +740 +741 if self.write_limit() > 0 { +742 while let Some(id) = self.connection_blocked.pop() { +743 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { +744 None => continue, +745 Some(s) => s, +746 }; +747 +748 debug_assert!(stream.connection_blocked); +749 stream.connection_blocked = false; +750 +751 // If it's no longer sensible to write to a stream (even to detect an error) then don't +752 // report it. +753 if stream.is_writable() && stream.max_data > stream.offset() { +754 return Some(StreamEvent::Writable { id }); +755 } +756 } 757 } 758 -759 self.on_stream_frame(false, id); -760 Ok(()) -761 } -762 -763 /// Returns the maximum amount of data this is allowed to be written on the connection -764 pub(crate) fn write_limit(&self) -> u64 { -765 (self.max_data - self.data_sent) -766 // `send_window` can be set after construction to something *less* than `unacked_data` -767 .min(self.send_window.saturating_sub(self.unacked_data)) -768 } -769 -770 /// Yield stream events -771 pub(crate) fn poll(&mut self) -> Option<StreamEvent> { -772 if let Some(dir) = Dir::iter().find(|&i| mem::replace(&mut self.opened[i as usize], false)) -773 { -774 return Some(StreamEvent::Opened { dir }); +759 self.events.pop_front() +760 } +761 +762 /// Queues MAX_STREAM_ID frames in `pending` if needed +763 /// +764 /// Returns whether any frames were queued. +765 pub(crate) fn queue_max_stream_id(&mut self, pending: &mut Retransmits) -> bool { +766 let mut queued = false; +767 for dir in Dir::iter() { +768 let diff = self.max_remote[dir as usize] - self.sent_max_remote[dir as usize]; +769 // To reduce traffic, only announce updates if at least 1/8 of the flow control window +770 // has been consumed. +771 if diff > self.max_concurrent_remote_count[dir as usize] / 8 { +772 pending.max_stream_id[dir as usize] = true; +773 queued = true; +774 } 775 } -776 -777 if self.write_limit() > 0 { -778 while let Some(id) = self.connection_blocked.pop() { -779 let stream = match self.send.get_mut(&id).and_then(|s| s.as_mut()) { -780 None => continue, -781 Some(s) => s, -782 }; -783 -784 debug_assert!(stream.connection_blocked); -785 stream.connection_blocked = false; -786 -787 // If it's no longer sensible to write to a stream (even to detect an error) then don't -788 // report it. -789 if stream.is_writable() && stream.max_data > stream.offset() { -790 return Some(StreamEvent::Writable { id }); -791 } -792 } -793 } -794 -795 self.events.pop_front() -796 } -797 -798 /// Queues MAX_STREAM_ID frames in `pending` if needed -799 /// -800 /// Returns whether any frames were queued. -801 pub(crate) fn queue_max_stream_id(&mut self, pending: &mut Retransmits) -> bool { -802 let mut queued = false; -803 for dir in Dir::iter() { -804 let diff = self.max_remote[dir as usize] - self.sent_max_remote[dir as usize]; -805 // To reduce traffic, only announce updates if at least 1/8 of the flow control window -806 // has been consumed. -807 if diff > self.max_concurrent_remote_count[dir as usize] / 8 { -808 pending.max_stream_id[dir as usize] = true; -809 queued = true; -810 } -811 } -812 queued +776 queued +777 } +778 +779 /// Check for errors entailed by the peer's use of `id` as a send stream +780 fn validate_receive_id(&mut self, id: StreamId) -> Result<(), TransportError> { +781 if self.side == id.initiator() { +782 match id.dir() { +783 Dir::Uni => { +784 return Err(TransportError::STREAM_STATE_ERROR( +785 "illegal operation on send-only stream", +786 )); +787 } +788 Dir::Bi if id.index() >= self.next[Dir::Bi as usize] => { +789 return Err(TransportError::STREAM_STATE_ERROR( +790 "operation on unopened stream", +791 )); +792 } +793 Dir::Bi => {} +794 }; +795 } else { +796 let limit = self.max_remote[id.dir() as usize]; +797 if id.index() >= limit { +798 return Err(TransportError::STREAM_LIMIT_ERROR("")); +799 } +800 } +801 Ok(()) +802 } +803 +804 /// Whether a locally initiated stream has never been open +805 pub(crate) fn is_local_unopened(&self, id: StreamId) -> bool { +806 id.index() >= self.next[id.dir() as usize] +807 } +808 +809 pub(crate) fn set_max_concurrent(&mut self, dir: Dir, count: VarInt) { +810 self.flow_control_adjusted = true; +811 self.max_concurrent_remote_count[dir as usize] = count.into(); +812 self.ensure_remote_streams(dir); 813 } 814 -815 /// Check for errors entailed by the peer's use of `id` as a send stream -816 fn validate_receive_id(&mut self, id: StreamId) -> Result<(), TransportError> { -817 if self.side == id.initiator() { -818 match id.dir() { -819 Dir::Uni => { -820 return Err(TransportError::STREAM_STATE_ERROR( -821 "illegal operation on send-only stream", -822 )); -823 } -824 Dir::Bi if id.index() >= self.next[Dir::Bi as usize] => { -825 return Err(TransportError::STREAM_STATE_ERROR( -826 "operation on unopened stream", -827 )); -828 } -829 Dir::Bi => {} -830 }; -831 } else { -832 let limit = self.max_remote[id.dir() as usize]; -833 if id.index() >= limit { -834 return Err(TransportError::STREAM_LIMIT_ERROR("")); -835 } +815 pub(crate) fn max_concurrent(&self, dir: Dir) -> u64 { +816 self.allocated_remote_count[dir as usize] +817 } +818 +819 pub(crate) fn set_send_window(&mut self, send_window: u64) { +820 self.send_window = send_window; +821 } +822 +823 /// Set the receive_window and returns whether the receive_window has been +824 /// expanded or shrunk: true if expanded, false if shrunk. +825 pub(crate) fn set_receive_window(&mut self, receive_window: VarInt) -> bool { +826 let receive_window = receive_window.into(); +827 let mut expanded = false; +828 if receive_window > self.receive_window { +829 self.local_max_data = self +830 .local_max_data +831 .saturating_add(receive_window - self.receive_window); +832 expanded = true; +833 } else { +834 let diff = self.receive_window - receive_window; +835 self.receive_window_shrink_debt = self.receive_window_shrink_debt.saturating_add(diff); 836 } -837 Ok(()) -838 } -839 -840 /// Whether a locally initiated stream has never been open -841 pub(crate) fn is_local_unopened(&self, id: StreamId) -> bool { -842 id.index() >= self.next[id.dir() as usize] -843 } -844 -845 pub(crate) fn set_max_concurrent(&mut self, dir: Dir, count: VarInt) { -846 self.flow_control_adjusted = true; -847 self.max_concurrent_remote_count[dir as usize] = count.into(); -848 self.ensure_remote_streams(dir); -849 } -850 -851 pub(crate) fn max_concurrent(&self, dir: Dir) -> u64 { -852 self.allocated_remote_count[dir as usize] -853 } -854 -855 pub(crate) fn set_send_window(&mut self, send_window: u64) { -856 self.send_window = send_window; -857 } -858 -859 /// Set the receive_window and returns whether the receive_window has been -860 /// expanded or shrunk: true if expanded, false if shrunk. -861 pub(crate) fn set_receive_window(&mut self, receive_window: VarInt) -> bool { -862 let receive_window = receive_window.into(); -863 let mut expanded = false; -864 if receive_window > self.receive_window { -865 self.local_max_data = self -866 .local_max_data -867 .saturating_add(receive_window - self.receive_window); -868 expanded = true; -869 } else { -870 let diff = self.receive_window - receive_window; -871 self.receive_window_shrink_debt = self.receive_window_shrink_debt.saturating_add(diff); -872 } -873 self.receive_window = receive_window; -874 expanded -875 } -876 -877 pub(super) fn insert(&mut self, remote: bool, id: StreamId) { -878 let bi = id.dir() == Dir::Bi; -879 // bidirectional OR (unidirectional AND NOT remote) -880 if bi || !remote { -881 assert!(self.send.insert(id, None).is_none()); -882 } -883 // bidirectional OR (unidirectional AND remote) -884 if bi || remote { -885 let recv = self.free_recv.pop(); -886 assert!(self.recv.insert(id, recv).is_none()); -887 } -888 } -889 -890 /// Adds credits to the connection flow control window -891 /// -892 /// Returns whether a `MAX_DATA` frame should be enqueued as soon as possible. -893 /// This will only be the case if the window update would is significant -894 /// enough. As soon as a window update with a `MAX_DATA` frame has been -895 /// queued, the [`Recv::record_sent_max_stream_data`] function should be called to -896 /// suppress sending further updates until the window increases significantly -897 /// again. -898 pub(super) fn add_read_credits(&mut self, credits: u64) -> ShouldTransmit { -899 if credits > self.receive_window_shrink_debt { -900 let net_credits = credits - self.receive_window_shrink_debt; -901 self.local_max_data = self.local_max_data.saturating_add(net_credits); -902 self.receive_window_shrink_debt = 0; -903 } else { -904 self.receive_window_shrink_debt -= credits; -905 } +837 self.receive_window = receive_window; +838 expanded +839 } +840 +841 pub(super) fn insert(&mut self, remote: bool, id: StreamId) { +842 let bi = id.dir() == Dir::Bi; +843 // bidirectional OR (unidirectional AND NOT remote) +844 if bi || !remote { +845 assert!(self.send.insert(id, None).is_none()); +846 } +847 // bidirectional OR (unidirectional AND remote) +848 if bi || remote { +849 let recv = self.free_recv.pop(); +850 assert!(self.recv.insert(id, recv).is_none()); +851 } +852 } +853 +854 /// Adds credits to the connection flow control window +855 /// +856 /// Returns whether a `MAX_DATA` frame should be enqueued as soon as possible. +857 /// This will only be the case if the window update would is significant +858 /// enough. As soon as a window update with a `MAX_DATA` frame has been +859 /// queued, the [`Recv::record_sent_max_stream_data`] function should be called to +860 /// suppress sending further updates until the window increases significantly +861 /// again. +862 pub(super) fn add_read_credits(&mut self, credits: u64) -> ShouldTransmit { +863 if credits > self.receive_window_shrink_debt { +864 let net_credits = credits - self.receive_window_shrink_debt; +865 self.local_max_data = self.local_max_data.saturating_add(net_credits); +866 self.receive_window_shrink_debt = 0; +867 } else { +868 self.receive_window_shrink_debt -= credits; +869 } +870 +871 if self.local_max_data > VarInt::MAX.into_inner() { +872 return ShouldTransmit(false); +873 } +874 +875 // Only announce a window update if it's significant enough +876 // to make it worthwhile sending a MAX_DATA frame. +877 // We use a fraction of the configured connection receive window to make +878 // the decision, to accommodate for connection using bigger windows requiring +879 // less updates. +880 let diff = self.local_max_data - self.sent_max_data.into_inner(); +881 ShouldTransmit(diff >= (self.receive_window / 8)) +882 } +883 +884 /// Update counters for removal of a stream +885 pub(super) fn stream_freed(&mut self, id: StreamId, half: StreamHalf) { +886 if id.initiator() != self.side { +887 let fully_free = id.dir() == Dir::Uni +888 || match half { +889 StreamHalf::Send => !self.recv.contains_key(&id), +890 StreamHalf::Recv => !self.send.contains_key(&id), +891 }; +892 if fully_free { +893 self.allocated_remote_count[id.dir() as usize] -= 1; +894 self.ensure_remote_streams(id.dir()); +895 } +896 } +897 if half == StreamHalf::Send { +898 self.send_streams -= 1; +899 } +900 } +901 +902 pub(super) fn stream_recv_freed(&mut self, id: StreamId, recv: StreamRecv) { +903 self.free_recv.push(recv.free(self.stream_receive_window)); +904 self.stream_freed(id, StreamHalf::Recv); +905 } 906 -907 if self.local_max_data > VarInt::MAX.into_inner() { -908 return ShouldTransmit(false); -909 } -910 -911 // Only announce a window update if it's significant enough -912 // to make it worthwhile sending a MAX_DATA frame. -913 // We use a fraction of the configured connection receive window to make -914 // the decision, to accommodate for connection using bigger windows requiring -915 // less updates. -916 let diff = self.local_max_data - self.sent_max_data.into_inner(); -917 ShouldTransmit(diff >= (self.receive_window / 8)) -918 } -919 -920 /// Update counters for removal of a stream -921 pub(super) fn stream_freed(&mut self, id: StreamId, half: StreamHalf) { -922 if id.initiator() != self.side { -923 let fully_free = id.dir() == Dir::Uni -924 || match half { -925 StreamHalf::Send => !self.recv.contains_key(&id), -926 StreamHalf::Recv => !self.send.contains_key(&id), -927 }; -928 if fully_free { -929 self.allocated_remote_count[id.dir() as usize] -= 1; -930 self.ensure_remote_streams(id.dir()); -931 } -932 } -933 if half == StreamHalf::Send { -934 self.send_streams -= 1; -935 } -936 } -937 -938 pub(super) fn stream_recv_freed(&mut self, id: StreamId, recv: StreamRecv) { -939 self.free_recv.push(recv.free(self.stream_receive_window)); -940 self.stream_freed(id, StreamHalf::Recv); -941 } -942 -943 pub(super) fn max_send_data(&self, id: StreamId) -> VarInt { -944 let remote = self.side != id.initiator(); -945 match id.dir() { -946 Dir::Uni => self.initial_max_stream_data_uni, -947 // Remote/local appear reversed here because the transport parameters are named from -948 // the perspective of the peer. -949 Dir::Bi if remote => self.initial_max_stream_data_bidi_local, -950 Dir::Bi => self.initial_max_stream_data_bidi_remote, -951 } -952 } -953} -954 -955#[inline] -956pub(super) fn get_or_insert_send( -957 max_data: VarInt, -958) -> impl Fn(&mut Option<Box<Send>>) -> &mut Box<Send> { -959 move |opt| opt.get_or_insert_with(|| Send::new(max_data)) -960} -961 -962#[inline] -963pub(super) fn get_or_insert_recv( -964 initial_max_data: u64, -965) -> impl FnMut(&mut Option<StreamRecv>) -> &mut Recv { -966 move |opt| { -967 *opt = opt.take().map(|s| match s { -968 StreamRecv::Free(recv) => StreamRecv::Open(recv), -969 s => s, -970 }); -971 opt.get_or_insert_with(|| StreamRecv::Open(Recv::new(initial_max_data))) -972 .as_open_recv_mut() -973 .unwrap() -974 } -975} -976 -977#[cfg(test)] -978mod tests { -979 use super::*; -980 use crate::{ -981 ReadableError, RecvStream, SendStream, TransportErrorCode, WriteError, -982 connection::State as ConnState, connection::Streams, -983 }; -984 use bytes::Bytes; -985 -986 fn make(side: Side) -> StreamsState { -987 StreamsState::new( -988 side, -989 128u32.into(), -990 128u32.into(), -991 1024 * 1024, -992 (1024 * 1024u32).into(), -993 (1024 * 1024u32).into(), -994 ) -995 } -996 -997 #[test] -998 fn trivial_flow_control() { -999 let mut client = StreamsState::new( -1000 Side::Client, -1001 1u32.into(), -1002 1u32.into(), -1003 1024 * 1024, -1004 (1024 * 1024u32).into(), -1005 (1024 * 1024u32).into(), -1006 ); -1007 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1008 let initial_max = client.local_max_data; -1009 const MESSAGE_SIZE: usize = 2048; -1010 assert_eq!( -1011 client -1012 .received( -1013 frame::Stream { -1014 id, -1015 offset: 0, -1016 fin: true, -1017 data: Bytes::from_static(&[0; MESSAGE_SIZE]), -1018 }, -1019 2048 -1020 ) -1021 .unwrap(), -1022 ShouldTransmit(false) -1023 ); -1024 assert_eq!(client.data_recvd, 2048); -1025 assert_eq!(client.local_max_data - initial_max, 0); -1026 -1027 let mut pending = Retransmits::default(); -1028 let mut recv = RecvStream { -1029 id, -1030 state: &mut client, -1031 pending: &mut pending, -1032 }; -1033 -1034 let mut chunks = recv.read(true).unwrap(); -1035 assert_eq!( -1036 chunks.next(MESSAGE_SIZE).unwrap().unwrap().bytes.len(), -1037 MESSAGE_SIZE -1038 ); -1039 assert!(chunks.next(0).unwrap().is_none()); -1040 let should_transmit = chunks.finalize(); -1041 assert!(should_transmit.0); -1042 assert!(pending.max_stream_id[Dir::Uni as usize]); -1043 assert_eq!(client.local_max_data - initial_max, MESSAGE_SIZE as u64); -1044 } -1045 -1046 #[test] -1047 fn reset_flow_control() { -1048 let mut client = make(Side::Client); -1049 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1050 let initial_max = client.local_max_data; -1051 assert_eq!( -1052 client -1053 .received( -1054 frame::Stream { -1055 id, -1056 offset: 0, -1057 fin: false, -1058 data: Bytes::from_static(&[0; 2048]), -1059 }, -1060 2048 -1061 ) -1062 .unwrap(), -1063 ShouldTransmit(false) -1064 ); -1065 assert_eq!(client.data_recvd, 2048); -1066 assert_eq!(client.local_max_data - initial_max, 0); -1067 -1068 let mut pending = Retransmits::default(); -1069 let mut recv = RecvStream { -1070 id, -1071 state: &mut client, -1072 pending: &mut pending, -1073 }; -1074 -1075 let mut chunks = recv.read(true).unwrap(); -1076 chunks.next(1024).unwrap(); -1077 let _ = chunks.finalize(); -1078 assert_eq!(client.local_max_data - initial_max, 1024); -1079 assert_eq!( -1080 client -1081 .received_reset(frame::ResetStream { -1082 id, -1083 error_code: 0u32.into(), -1084 final_offset: 4096u32.into(), -1085 }) -1086 .unwrap(), -1087 ShouldTransmit(false) -1088 ); -1089 -1090 assert_eq!(client.data_recvd, 4096); -1091 assert_eq!(client.local_max_data - initial_max, 4096); -1092 -1093 // Ensure reading after a reset doesn't issue redundant credit -1094 let mut recv = RecvStream { -1095 id, -1096 state: &mut client, -1097 pending: &mut pending, -1098 }; -1099 let mut chunks = recv.read(true).unwrap(); -1100 assert_eq!( -1101 chunks.next(1024).unwrap_err(), -1102 crate::ReadError::Reset(0u32.into()) +907 pub(super) fn max_send_data(&self, id: StreamId) -> VarInt { +908 let remote = self.side != id.initiator(); +909 match id.dir() { +910 Dir::Uni => self.initial_max_stream_data_uni, +911 // Remote/local appear reversed here because the transport parameters are named from +912 // the perspective of the peer. +913 Dir::Bi if remote => self.initial_max_stream_data_bidi_local, +914 Dir::Bi => self.initial_max_stream_data_bidi_remote, +915 } +916 } +917} +918 +919#[inline] +920pub(super) fn get_or_insert_send( +921 max_data: VarInt, +922) -> impl Fn(&mut Option<Box<Send>>) -> &mut Box<Send> { +923 move |opt| opt.get_or_insert_with(|| Send::new(max_data)) +924} +925 +926#[inline] +927pub(super) fn get_or_insert_recv( +928 initial_max_data: u64, +929) -> impl FnMut(&mut Option<StreamRecv>) -> &mut Recv { +930 move |opt| { +931 *opt = opt.take().map(|s| match s { +932 StreamRecv::Free(recv) => StreamRecv::Open(recv), +933 s => s, +934 }); +935 opt.get_or_insert_with(|| StreamRecv::Open(Recv::new(initial_max_data))) +936 .as_open_recv_mut() +937 .unwrap() +938 } +939} +940 +941#[cfg(test)] +942mod tests { +943 use super::*; +944 use crate::{ +945 ReadableError, RecvStream, SendStream, TransportErrorCode, WriteError, +946 connection::State as ConnState, connection::Streams, +947 }; +948 use bytes::Bytes; +949 +950 fn make(side: Side) -> StreamsState { +951 StreamsState::new( +952 side, +953 128u32.into(), +954 128u32.into(), +955 1024 * 1024, +956 (1024 * 1024u32).into(), +957 (1024 * 1024u32).into(), +958 ) +959 } +960 +961 #[test] +962 fn trivial_flow_control() { +963 let mut client = StreamsState::new( +964 Side::Client, +965 1u32.into(), +966 1u32.into(), +967 1024 * 1024, +968 (1024 * 1024u32).into(), +969 (1024 * 1024u32).into(), +970 ); +971 let id = StreamId::new(Side::Server, Dir::Uni, 0); +972 let initial_max = client.local_max_data; +973 const MESSAGE_SIZE: usize = 2048; +974 assert_eq!( +975 client +976 .received( +977 frame::Stream { +978 id, +979 offset: 0, +980 fin: true, +981 data: Bytes::from_static(&[0; MESSAGE_SIZE]), +982 }, +983 2048 +984 ) +985 .unwrap(), +986 ShouldTransmit(false) +987 ); +988 assert_eq!(client.data_recvd, 2048); +989 assert_eq!(client.local_max_data - initial_max, 0); +990 +991 let mut pending = Retransmits::default(); +992 let mut recv = RecvStream { +993 id, +994 state: &mut client, +995 pending: &mut pending, +996 }; +997 +998 let mut chunks = recv.read(true).unwrap(); +999 assert_eq!( +1000 chunks.next(MESSAGE_SIZE).unwrap().unwrap().bytes.len(), +1001 MESSAGE_SIZE +1002 ); +1003 assert!(chunks.next(0).unwrap().is_none()); +1004 let should_transmit = chunks.finalize(); +1005 assert!(should_transmit.0); +1006 assert!(pending.max_stream_id[Dir::Uni as usize]); +1007 assert_eq!(client.local_max_data - initial_max, MESSAGE_SIZE as u64); +1008 } +1009 +1010 #[test] +1011 fn reset_flow_control() { +1012 let mut client = make(Side::Client); +1013 let id = StreamId::new(Side::Server, Dir::Uni, 0); +1014 let initial_max = client.local_max_data; +1015 assert_eq!( +1016 client +1017 .received( +1018 frame::Stream { +1019 id, +1020 offset: 0, +1021 fin: false, +1022 data: Bytes::from_static(&[0; 2048]), +1023 }, +1024 2048 +1025 ) +1026 .unwrap(), +1027 ShouldTransmit(false) +1028 ); +1029 assert_eq!(client.data_recvd, 2048); +1030 assert_eq!(client.local_max_data - initial_max, 0); +1031 +1032 let mut pending = Retransmits::default(); +1033 let mut recv = RecvStream { +1034 id, +1035 state: &mut client, +1036 pending: &mut pending, +1037 }; +1038 +1039 let mut chunks = recv.read(true).unwrap(); +1040 chunks.next(1024).unwrap(); +1041 let _ = chunks.finalize(); +1042 assert_eq!(client.local_max_data - initial_max, 1024); +1043 assert_eq!( +1044 client +1045 .received_reset(frame::ResetStream { +1046 id, +1047 error_code: 0u32.into(), +1048 final_offset: 4096u32.into(), +1049 }) +1050 .unwrap(), +1051 ShouldTransmit(false) +1052 ); +1053 +1054 assert_eq!(client.data_recvd, 4096); +1055 assert_eq!(client.local_max_data - initial_max, 4096); +1056 +1057 // Ensure reading after a reset doesn't issue redundant credit +1058 let mut recv = RecvStream { +1059 id, +1060 state: &mut client, +1061 pending: &mut pending, +1062 }; +1063 let mut chunks = recv.read(true).unwrap(); +1064 assert_eq!( +1065 chunks.next(1024).unwrap_err(), +1066 crate::ReadError::Reset(0u32.into()) +1067 ); +1068 let _ = chunks.finalize(); +1069 assert_eq!(client.data_recvd, 4096); +1070 assert_eq!(client.local_max_data - initial_max, 4096); +1071 } +1072 +1073 #[test] +1074 fn reset_after_empty_frame_flow_control() { +1075 let mut client = make(Side::Client); +1076 let id = StreamId::new(Side::Server, Dir::Uni, 0); +1077 let initial_max = client.local_max_data; +1078 assert_eq!( +1079 client +1080 .received( +1081 frame::Stream { +1082 id, +1083 offset: 4096, +1084 fin: false, +1085 data: Bytes::from_static(&[0; 0]), +1086 }, +1087 0 +1088 ) +1089 .unwrap(), +1090 ShouldTransmit(false) +1091 ); +1092 assert_eq!(client.data_recvd, 4096); +1093 assert_eq!(client.local_max_data - initial_max, 0); +1094 assert_eq!( +1095 client +1096 .received_reset(frame::ResetStream { +1097 id, +1098 error_code: 0u32.into(), +1099 final_offset: 4096u32.into(), +1100 }) +1101 .unwrap(), +1102 ShouldTransmit(false) 1103 ); -1104 let _ = chunks.finalize(); -1105 assert_eq!(client.data_recvd, 4096); -1106 assert_eq!(client.local_max_data - initial_max, 4096); -1107 } -1108 -1109 #[test] -1110 fn reset_after_empty_frame_flow_control() { -1111 let mut client = make(Side::Client); -1112 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1113 let initial_max = client.local_max_data; -1114 assert_eq!( -1115 client -1116 .received( -1117 frame::Stream { -1118 id, -1119 offset: 4096, -1120 fin: false, -1121 data: Bytes::from_static(&[0; 0]), -1122 }, -1123 0 -1124 ) -1125 .unwrap(), -1126 ShouldTransmit(false) -1127 ); -1128 assert_eq!(client.data_recvd, 4096); -1129 assert_eq!(client.local_max_data - initial_max, 0); -1130 assert_eq!( -1131 client -1132 .received_reset(frame::ResetStream { -1133 id, -1134 error_code: 0u32.into(), -1135 final_offset: 4096u32.into(), -1136 }) -1137 .unwrap(), -1138 ShouldTransmit(false) -1139 ); -1140 assert_eq!(client.data_recvd, 4096); -1141 assert_eq!(client.local_max_data - initial_max, 4096); -1142 } -1143 -1144 #[test] -1145 fn duplicate_reset_flow_control() { -1146 let mut client = make(Side::Client); -1147 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1148 assert_eq!( -1149 client -1150 .received_reset(frame::ResetStream { -1151 id, -1152 error_code: 0u32.into(), -1153 final_offset: 4096u32.into(), -1154 }) -1155 .unwrap(), -1156 ShouldTransmit(false) -1157 ); -1158 assert_eq!(client.data_recvd, 4096); -1159 assert_eq!( -1160 client -1161 .received_reset(frame::ResetStream { -1162 id, -1163 error_code: 0u32.into(), -1164 final_offset: 4096u32.into(), -1165 }) -1166 .unwrap(), -1167 ShouldTransmit(false) -1168 ); -1169 assert_eq!(client.data_recvd, 4096); -1170 } +1104 assert_eq!(client.data_recvd, 4096); +1105 assert_eq!(client.local_max_data - initial_max, 4096); +1106 } +1107 +1108 #[test] +1109 fn duplicate_reset_flow_control() { +1110 let mut client = make(Side::Client); +1111 let id = StreamId::new(Side::Server, Dir::Uni, 0); +1112 assert_eq!( +1113 client +1114 .received_reset(frame::ResetStream { +1115 id, +1116 error_code: 0u32.into(), +1117 final_offset: 4096u32.into(), +1118 }) +1119 .unwrap(), +1120 ShouldTransmit(false) +1121 ); +1122 assert_eq!(client.data_recvd, 4096); +1123 assert_eq!( +1124 client +1125 .received_reset(frame::ResetStream { +1126 id, +1127 error_code: 0u32.into(), +1128 final_offset: 4096u32.into(), +1129 }) +1130 .unwrap(), +1131 ShouldTransmit(false) +1132 ); +1133 assert_eq!(client.data_recvd, 4096); +1134 } +1135 +1136 #[test] +1137 fn recv_stopped() { +1138 let mut client = make(Side::Client); +1139 let id = StreamId::new(Side::Server, Dir::Uni, 0); +1140 let initial_max = client.local_max_data; +1141 assert_eq!( +1142 client +1143 .received( +1144 frame::Stream { +1145 id, +1146 offset: 0, +1147 fin: false, +1148 data: Bytes::from_static(&[0; 32]), +1149 }, +1150 32 +1151 ) +1152 .unwrap(), +1153 ShouldTransmit(false) +1154 ); +1155 assert_eq!(client.local_max_data, initial_max); +1156 +1157 let mut pending = Retransmits::default(); +1158 let mut recv = RecvStream { +1159 id, +1160 state: &mut client, +1161 pending: &mut pending, +1162 }; +1163 +1164 recv.stop(0u32.into()).unwrap(); +1165 assert_eq!(recv.pending.stop_sending.len(), 1); +1166 assert!(!recv.pending.max_data); +1167 +1168 assert!(recv.stop(0u32.into()).is_err()); +1169 assert_eq!(recv.read(true).err(), Some(ReadableError::ClosedStream)); +1170 assert_eq!(recv.read(false).err(), Some(ReadableError::ClosedStream)); 1171 -1172 #[test] -1173 fn recv_stopped() { -1174 let mut client = make(Side::Client); -1175 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1176 let initial_max = client.local_max_data; -1177 assert_eq!( -1178 client -1179 .received( -1180 frame::Stream { -1181 id, -1182 offset: 0, -1183 fin: false, -1184 data: Bytes::from_static(&[0; 32]), -1185 }, -1186 32 -1187 ) -1188 .unwrap(), -1189 ShouldTransmit(false) -1190 ); -1191 assert_eq!(client.local_max_data, initial_max); -1192 -1193 let mut pending = Retransmits::default(); -1194 let mut recv = RecvStream { -1195 id, -1196 state: &mut client, -1197 pending: &mut pending, -1198 }; -1199 -1200 recv.stop(0u32.into()).unwrap(); -1201 assert_eq!(recv.pending.stop_sending.len(), 1); -1202 assert!(!recv.pending.max_data); -1203 -1204 assert!(recv.stop(0u32.into()).is_err()); -1205 assert_eq!(recv.read(true).err(), Some(ReadableError::ClosedStream)); -1206 assert_eq!(recv.read(false).err(), Some(ReadableError::ClosedStream)); -1207 -1208 assert_eq!(client.local_max_data - initial_max, 32); -1209 assert_eq!( -1210 client -1211 .received( -1212 frame::Stream { -1213 id, -1214 offset: 32, -1215 fin: true, -1216 data: Bytes::from_static(&[0; 16]), -1217 }, -1218 16 -1219 ) -1220 .unwrap(), -1221 ShouldTransmit(false) -1222 ); -1223 assert_eq!(client.local_max_data - initial_max, 48); -1224 assert!(!client.recv.contains_key(&id)); -1225 } -1226 -1227 #[test] -1228 fn stopped_reset() { -1229 let mut client = make(Side::Client); -1230 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1231 // Server opens stream -1232 assert_eq!( -1233 client -1234 .received( -1235 frame::Stream { -1236 id, -1237 offset: 0, -1238 fin: false, -1239 data: Bytes::from_static(&[0; 32]) -1240 }, -1241 32 -1242 ) -1243 .unwrap(), -1244 ShouldTransmit(false) -1245 ); -1246 -1247 let mut pending = Retransmits::default(); -1248 let mut recv = RecvStream { -1249 id, -1250 state: &mut client, -1251 pending: &mut pending, -1252 }; -1253 -1254 recv.stop(0u32.into()).unwrap(); -1255 assert_eq!(pending.stop_sending.len(), 1); -1256 assert!(!pending.max_data); -1257 -1258 // Server complies -1259 let prev_max = client.max_remote[Dir::Uni as usize]; -1260 assert_eq!( -1261 client -1262 .received_reset(frame::ResetStream { -1263 id, -1264 error_code: 0u32.into(), -1265 final_offset: 32u32.into(), -1266 }) -1267 .unwrap(), -1268 ShouldTransmit(false) -1269 ); -1270 assert!(!client.recv.contains_key(&id), "stream state is freed"); -1271 assert_eq!(client.max_remote[Dir::Uni as usize], prev_max + 1); -1272 } -1273 -1274 #[test] -1275 fn send_stopped() { -1276 let mut server = make(Side::Server); -1277 server.set_params(&TransportParameters { -1278 initial_max_streams_uni: 1u32.into(), -1279 initial_max_data: 42u32.into(), -1280 initial_max_stream_data_uni: 42u32.into(), -1281 ..TransportParameters::default() -1282 }); -1283 -1284 let (mut pending, state) = (Retransmits::default(), ConnState::established()); -1285 let id = Streams { -1286 state: &mut server, -1287 conn_state: &state, -1288 } -1289 .open(Dir::Uni) -1290 .unwrap(); -1291 -1292 let mut stream = SendStream { -1293 id, -1294 state: &mut server, -1295 pending: &mut pending, -1296 conn_state: &state, -1297 }; +1172 assert_eq!(client.local_max_data - initial_max, 32); +1173 assert_eq!( +1174 client +1175 .received( +1176 frame::Stream { +1177 id, +1178 offset: 32, +1179 fin: true, +1180 data: Bytes::from_static(&[0; 16]), +1181 }, +1182 16 +1183 ) +1184 .unwrap(), +1185 ShouldTransmit(false) +1186 ); +1187 assert_eq!(client.local_max_data - initial_max, 48); +1188 assert!(!client.recv.contains_key(&id)); +1189 } +1190 +1191 #[test] +1192 fn stopped_reset() { +1193 let mut client = make(Side::Client); +1194 let id = StreamId::new(Side::Server, Dir::Uni, 0); +1195 // Server opens stream +1196 assert_eq!( +1197 client +1198 .received( +1199 frame::Stream { +1200 id, +1201 offset: 0, +1202 fin: false, +1203 data: Bytes::from_static(&[0; 32]) +1204 }, +1205 32 +1206 ) +1207 .unwrap(), +1208 ShouldTransmit(false) +1209 ); +1210 +1211 let mut pending = Retransmits::default(); +1212 let mut recv = RecvStream { +1213 id, +1214 state: &mut client, +1215 pending: &mut pending, +1216 }; +1217 +1218 recv.stop(0u32.into()).unwrap(); +1219 assert_eq!(pending.stop_sending.len(), 1); +1220 assert!(!pending.max_data); +1221 +1222 // Server complies +1223 let prev_max = client.max_remote[Dir::Uni as usize]; +1224 assert_eq!( +1225 client +1226 .received_reset(frame::ResetStream { +1227 id, +1228 error_code: 0u32.into(), +1229 final_offset: 32u32.into(), +1230 }) +1231 .unwrap(), +1232 ShouldTransmit(false) +1233 ); +1234 assert!(!client.recv.contains_key(&id), "stream state is freed"); +1235 assert_eq!(client.max_remote[Dir::Uni as usize], prev_max + 1); +1236 } +1237 +1238 #[test] +1239 fn send_stopped() { +1240 let mut server = make(Side::Server); +1241 server.set_params(&TransportParameters { +1242 initial_max_streams_uni: 1u32.into(), +1243 initial_max_data: 42u32.into(), +1244 initial_max_stream_data_uni: 42u32.into(), +1245 ..TransportParameters::default() +1246 }); +1247 +1248 let (mut pending, state) = (Retransmits::default(), ConnState::established()); +1249 let id = Streams { +1250 state: &mut server, +1251 conn_state: &state, +1252 } +1253 .open(Dir::Uni) +1254 .unwrap(); +1255 +1256 let mut stream = SendStream { +1257 id, +1258 state: &mut server, +1259 pending: &mut pending, +1260 conn_state: &state, +1261 }; +1262 +1263 let error_code = 0u32.into(); +1264 stream.state.received_stop_sending(id, error_code); +1265 assert!( +1266 stream +1267 .state +1268 .events +1269 .contains(&StreamEvent::Stopped { id, error_code }) +1270 ); +1271 stream.state.events.clear(); +1272 +1273 assert_eq!(stream.write(&[]), Err(WriteError::Stopped(error_code))); +1274 +1275 stream.reset(0u32.into()).unwrap(); +1276 assert_eq!(stream.write(&[]), Err(WriteError::ClosedStream)); +1277 +1278 // A duplicate frame is a no-op +1279 stream.state.received_stop_sending(id, error_code); +1280 assert!(stream.state.events.is_empty()); +1281 } +1282 +1283 #[test] +1284 fn final_offset_flow_control() { +1285 let mut client = make(Side::Client); +1286 assert_eq!( +1287 client +1288 .received_reset(frame::ResetStream { +1289 id: StreamId::new(Side::Server, Dir::Uni, 0), +1290 error_code: 0u32.into(), +1291 final_offset: VarInt::MAX, +1292 }) +1293 .unwrap_err() +1294 .code, +1295 TransportErrorCode::FLOW_CONTROL_ERROR +1296 ); +1297 } 1298 -1299 let error_code = 0u32.into(); -1300 stream.state.received_stop_sending(id, error_code); -1301 assert!( -1302 stream -1303 .state -1304 .events -1305 .contains(&StreamEvent::Stopped { id, error_code }) -1306 ); -1307 stream.state.events.clear(); +1299 #[test] +1300 fn stream_priority() { +1301 let mut server = make(Side::Server); +1302 server.set_params(&TransportParameters { +1303 initial_max_streams_bidi: 3u32.into(), +1304 initial_max_data: 10u32.into(), +1305 initial_max_stream_data_bidi_remote: 10u32.into(), +1306 ..TransportParameters::default() +1307 }); 1308 -1309 assert_eq!(stream.write(&[]), Err(WriteError::Stopped(error_code))); -1310 -1311 stream.reset(0u32.into()).unwrap(); -1312 assert_eq!(stream.write(&[]), Err(WriteError::ClosedStream)); -1313 -1314 // A duplicate frame is a no-op -1315 stream.state.received_stop_sending(id, error_code); -1316 assert!(stream.state.events.is_empty()); -1317 } +1309 let (mut pending, state) = (Retransmits::default(), ConnState::established()); +1310 let mut streams = Streams { +1311 state: &mut server, +1312 conn_state: &state, +1313 }; +1314 +1315 let id_high = streams.open(Dir::Bi).unwrap(); +1316 let id_mid = streams.open(Dir::Bi).unwrap(); +1317 let id_low = streams.open(Dir::Bi).unwrap(); 1318 -1319 #[test] -1320 fn final_offset_flow_control() { -1321 let mut client = make(Side::Client); -1322 assert_eq!( -1323 client -1324 .received_reset(frame::ResetStream { -1325 id: StreamId::new(Side::Server, Dir::Uni, 0), -1326 error_code: 0u32.into(), -1327 final_offset: VarInt::MAX, -1328 }) -1329 .unwrap_err() -1330 .code, -1331 TransportErrorCode::FLOW_CONTROL_ERROR -1332 ); -1333 } -1334 -1335 #[test] -1336 fn stream_priority() { -1337 let mut server = make(Side::Server); -1338 server.set_params(&TransportParameters { -1339 initial_max_streams_bidi: 3u32.into(), -1340 initial_max_data: 10u32.into(), -1341 initial_max_stream_data_bidi_remote: 10u32.into(), -1342 ..TransportParameters::default() -1343 }); +1319 let mut mid = SendStream { +1320 id: id_mid, +1321 state: &mut server, +1322 pending: &mut pending, +1323 conn_state: &state, +1324 }; +1325 mid.write(b"mid").unwrap(); +1326 +1327 let mut low = SendStream { +1328 id: id_low, +1329 state: &mut server, +1330 pending: &mut pending, +1331 conn_state: &state, +1332 }; +1333 low.set_priority(-1).unwrap(); +1334 low.write(b"low").unwrap(); +1335 +1336 let mut high = SendStream { +1337 id: id_high, +1338 state: &mut server, +1339 pending: &mut pending, +1340 conn_state: &state, +1341 }; +1342 high.set_priority(1).unwrap(); +1343 high.write(b"high").unwrap(); 1344 -1345 let (mut pending, state) = (Retransmits::default(), ConnState::established()); -1346 let mut streams = Streams { -1347 state: &mut server, -1348 conn_state: &state, -1349 }; -1350 -1351 let id_high = streams.open(Dir::Bi).unwrap(); -1352 let id_mid = streams.open(Dir::Bi).unwrap(); -1353 let id_low = streams.open(Dir::Bi).unwrap(); -1354 -1355 let mut mid = SendStream { -1356 id: id_mid, -1357 state: &mut server, -1358 pending: &mut pending, -1359 conn_state: &state, -1360 }; -1361 mid.write(b"mid").unwrap(); -1362 -1363 let mut low = SendStream { -1364 id: id_low, -1365 state: &mut server, -1366 pending: &mut pending, +1345 let meta = server.write_frames_for_test(40, true); +1346 assert_eq!(meta[0].id, id_high); +1347 assert_eq!(meta[1].id, id_mid); +1348 assert_eq!(meta[2].id, id_low); +1349 +1350 assert!(!server.can_send_stream_data()); +1351 assert_eq!(server.pending.len(), 0); +1352 } +1353 +1354 #[test] +1355 fn requeue_stream_priority() { +1356 let mut server = make(Side::Server); +1357 server.set_params(&TransportParameters { +1358 initial_max_streams_bidi: 3u32.into(), +1359 initial_max_data: 1000u32.into(), +1360 initial_max_stream_data_bidi_remote: 1000u32.into(), +1361 ..TransportParameters::default() +1362 }); +1363 +1364 let (mut pending, state) = (Retransmits::default(), ConnState::established()); +1365 let mut streams = Streams { +1366 state: &mut server, 1367 conn_state: &state, 1368 }; -1369 low.set_priority(-1).unwrap(); -1370 low.write(b"low").unwrap(); -1371 -1372 let mut high = SendStream { -1373 id: id_high, -1374 state: &mut server, -1375 pending: &mut pending, -1376 conn_state: &state, -1377 }; -1378 high.set_priority(1).unwrap(); -1379 high.write(b"high").unwrap(); -1380 -1381 let mut buf = Vec::with_capacity(40); -1382 let meta = server.write_stream_frames(&mut buf, true, &mut Default::default()); -1383 assert_eq!(meta[0].id, id_high); -1384 assert_eq!(meta[1].id, id_mid); -1385 assert_eq!(meta[2].id, id_low); -1386 -1387 assert!(!server.can_send_stream_data()); -1388 assert_eq!(server.pending.len(), 0); -1389 } -1390 -1391 #[test] -1392 fn requeue_stream_priority() { -1393 let mut server = make(Side::Server); -1394 server.set_params(&TransportParameters { -1395 initial_max_streams_bidi: 3u32.into(), -1396 initial_max_data: 1000u32.into(), -1397 initial_max_stream_data_bidi_remote: 1000u32.into(), -1398 ..TransportParameters::default() -1399 }); -1400 -1401 let (mut pending, state) = (Retransmits::default(), ConnState::established()); -1402 let mut streams = Streams { -1403 state: &mut server, -1404 conn_state: &state, -1405 }; +1369 +1370 let id_high = streams.open(Dir::Bi).unwrap(); +1371 let id_mid = streams.open(Dir::Bi).unwrap(); +1372 +1373 let mut mid = SendStream { +1374 id: id_mid, +1375 state: &mut server, +1376 pending: &mut pending, +1377 conn_state: &state, +1378 }; +1379 assert_eq!(mid.write(b"mid").unwrap(), 3); +1380 assert_eq!(server.pending.len(), 1); +1381 +1382 let mut high = SendStream { +1383 id: id_high, +1384 state: &mut server, +1385 pending: &mut pending, +1386 conn_state: &state, +1387 }; +1388 high.set_priority(1).unwrap(); +1389 assert_eq!(high.write(&[0; 200]).unwrap(), 200); +1390 assert_eq!(server.pending.len(), 2); +1391 +1392 // Requeue the high priority stream to lowest priority. The initial send +1393 // still uses high priority since it's queued that way. After that it will +1394 // switch to low priority +1395 let mut high = SendStream { +1396 id: id_high, +1397 state: &mut server, +1398 pending: &mut pending, +1399 conn_state: &state, +1400 }; +1401 high.set_priority(-1).unwrap(); +1402 +1403 let meta = server.write_frames_for_test(40, true); +1404 assert_eq!(meta.len(), 1); +1405 assert_eq!(meta[0].id, id_high); 1406 -1407 let id_high = streams.open(Dir::Bi).unwrap(); -1408 let id_mid = streams.open(Dir::Bi).unwrap(); +1407 // After requeuing we should end up with 2 priorities - not 3 +1408 assert_eq!(server.pending.len(), 2); 1409 -1410 let mut mid = SendStream { -1411 id: id_mid, -1412 state: &mut server, -1413 pending: &mut pending, -1414 conn_state: &state, -1415 }; -1416 assert_eq!(mid.write(b"mid").unwrap(), 3); -1417 assert_eq!(server.pending.len(), 1); -1418 -1419 let mut high = SendStream { -1420 id: id_high, -1421 state: &mut server, -1422 pending: &mut pending, -1423 conn_state: &state, -1424 }; -1425 high.set_priority(1).unwrap(); -1426 assert_eq!(high.write(&[0; 200]).unwrap(), 200); -1427 assert_eq!(server.pending.len(), 2); -1428 -1429 // Requeue the high priority stream to lowest priority. The initial send -1430 // still uses high priority since it's queued that way. After that it will -1431 // switch to low priority -1432 let mut high = SendStream { -1433 id: id_high, -1434 state: &mut server, -1435 pending: &mut pending, -1436 conn_state: &state, -1437 }; -1438 high.set_priority(-1).unwrap(); -1439 -1440 let mut buf = Vec::with_capacity(1000).limit(40); -1441 let meta = server.write_stream_frames(&mut buf, true, &mut Default::default()); -1442 assert_eq!(meta.len(), 1); -1443 assert_eq!(meta[0].id, id_high); -1444 -1445 // After requeuing we should end up with 2 priorities - not 3 -1446 assert_eq!(server.pending.len(), 2); -1447 -1448 let mut buf = buf.into_inner(); +1410 // Send the remaining data. The initial mid priority one should go first now +1411 let meta = server.write_frames_for_test(1000 - 40, true); +1412 assert_eq!(meta.len(), 2); +1413 assert_eq!(meta[0].id, id_mid); +1414 assert_eq!(meta[1].id, id_high); +1415 +1416 assert!(!server.can_send_stream_data()); +1417 assert_eq!(server.pending.len(), 0); +1418 } +1419 +1420 #[test] +1421 fn same_stream_priority() { +1422 for fair in [true, false] { +1423 let mut server = make(Side::Server); +1424 server.set_params(&TransportParameters { +1425 initial_max_streams_bidi: 3u32.into(), +1426 initial_max_data: 300u32.into(), +1427 initial_max_stream_data_bidi_remote: 300u32.into(), +1428 ..TransportParameters::default() +1429 }); +1430 +1431 let (mut pending, state) = (Retransmits::default(), ConnState::established()); +1432 let mut streams = Streams { +1433 state: &mut server, +1434 conn_state: &state, +1435 }; +1436 +1437 // a, b and c all have the same priority +1438 let id_a = streams.open(Dir::Bi).unwrap(); +1439 let id_b = streams.open(Dir::Bi).unwrap(); +1440 let id_c = streams.open(Dir::Bi).unwrap(); +1441 +1442 let mut stream_a = SendStream { +1443 id: id_a, +1444 state: &mut server, +1445 pending: &mut pending, +1446 conn_state: &state, +1447 }; +1448 stream_a.write(&[b'a'; 100]).unwrap(); 1449 -1450 // Send the remaining data. The initial mid priority one should go first now -1451 let meta = server.write_stream_frames(&mut buf, true, &mut Default::default()); -1452 assert_eq!(meta.len(), 2); -1453 assert_eq!(meta[0].id, id_mid); -1454 assert_eq!(meta[1].id, id_high); -1455 -1456 assert!(!server.can_send_stream_data()); -1457 assert_eq!(server.pending.len(), 0); -1458 } -1459 -1460 #[test] -1461 fn same_stream_priority() { -1462 for fair in [true, false] { -1463 let mut server = make(Side::Server); -1464 server.set_params(&TransportParameters { -1465 initial_max_streams_bidi: 3u32.into(), -1466 initial_max_data: 300u32.into(), -1467 initial_max_stream_data_bidi_remote: 300u32.into(), -1468 ..TransportParameters::default() -1469 }); -1470 -1471 let (mut pending, state) = (Retransmits::default(), ConnState::established()); -1472 let mut streams = Streams { -1473 state: &mut server, -1474 conn_state: &state, -1475 }; +1450 let mut stream_b = SendStream { +1451 id: id_b, +1452 state: &mut server, +1453 pending: &mut pending, +1454 conn_state: &state, +1455 }; +1456 stream_b.write(&[b'b'; 100]).unwrap(); +1457 +1458 let mut stream_c = SendStream { +1459 id: id_c, +1460 state: &mut server, +1461 pending: &mut pending, +1462 conn_state: &state, +1463 }; +1464 stream_c.write(&[b'c'; 100]).unwrap(); +1465 +1466 let mut metas = vec![]; +1467 +1468 // loop until all the streams are written +1469 loop { +1470 let meta = server.write_frames_for_test(40, fair); +1471 if meta.is_empty() { +1472 break; +1473 } +1474 metas.extend(meta); +1475 } 1476 -1477 // a, b and c all have the same priority -1478 let id_a = streams.open(Dir::Bi).unwrap(); -1479 let id_b = streams.open(Dir::Bi).unwrap(); -1480 let id_c = streams.open(Dir::Bi).unwrap(); -1481 -1482 let mut stream_a = SendStream { -1483 id: id_a, -1484 state: &mut server, -1485 pending: &mut pending, -1486 conn_state: &state, -1487 }; -1488 stream_a.write(&[b'a'; 100]).unwrap(); -1489 -1490 let mut stream_b = SendStream { -1491 id: id_b, -1492 state: &mut server, -1493 pending: &mut pending, -1494 conn_state: &state, -1495 }; -1496 stream_b.write(&[b'b'; 100]).unwrap(); -1497 -1498 let mut stream_c = SendStream { -1499 id: id_c, -1500 state: &mut server, -1501 pending: &mut pending, -1502 conn_state: &state, -1503 }; -1504 stream_c.write(&[b'c'; 100]).unwrap(); -1505 -1506 let mut metas = vec![]; -1507 let mut buf = Vec::with_capacity(1024); +1477 assert!(!server.can_send_stream_data()); +1478 assert_eq!(server.pending.len(), 0); +1479 +1480 let stream_ids = metas.iter().map(|m| m.id).collect::<Vec<_>>(); +1481 if fair { +1482 // When fairness is enabled, if we run out of buffer space to write out a stream, +1483 // the stream is re-queued after all the streams with the same priority. +1484 assert_eq!( +1485 stream_ids, +1486 vec![id_a, id_b, id_c, id_a, id_b, id_c, id_a, id_b, id_c] +1487 ); +1488 } else { +1489 // When fairness is disabled the stream is re-queued before all the other streams +1490 // with the same priority. +1491 assert_eq!( +1492 stream_ids, +1493 vec![id_a, id_a, id_a, id_b, id_b, id_b, id_c, id_c, id_c] +1494 ); +1495 } +1496 } +1497 } +1498 +1499 #[test] +1500 fn unfair_priority_bump() { +1501 let mut server = make(Side::Server); +1502 server.set_params(&TransportParameters { +1503 initial_max_streams_bidi: 3u32.into(), +1504 initial_max_data: 300u32.into(), +1505 initial_max_stream_data_bidi_remote: 300u32.into(), +1506 ..TransportParameters::default() +1507 }); 1508 -1509 // loop until all the streams are written -1510 loop { -1511 let mut chunk_buf = buf.limit(40); -1512 let meta = -1513 server.write_stream_frames(&mut chunk_buf, fair, &mut Default::default()); -1514 if meta.is_empty() { -1515 break; -1516 } -1517 metas.extend(meta); -1518 buf = chunk_buf.into_inner(); -1519 } -1520 -1521 assert!(!server.can_send_stream_data()); -1522 assert_eq!(server.pending.len(), 0); -1523 -1524 let stream_ids = metas.iter().map(|m| m.id).collect::<Vec<_>>(); -1525 if fair { -1526 // When fairness is enabled, if we run out of buffer space to write out a stream, -1527 // the stream is re-queued after all the streams with the same priority. -1528 assert_eq!( -1529 stream_ids, -1530 vec![id_a, id_b, id_c, id_a, id_b, id_c, id_a, id_b, id_c] -1531 ); -1532 } else { -1533 // When fairness is disabled the stream is re-queued before all the other streams -1534 // with the same priority. -1535 assert_eq!( -1536 stream_ids, -1537 vec![id_a, id_a, id_a, id_b, id_b, id_b, id_c, id_c, id_c] -1538 ); -1539 } -1540 } -1541 } +1509 let (mut pending, state) = (Retransmits::default(), ConnState::established()); +1510 let mut streams = Streams { +1511 state: &mut server, +1512 conn_state: &state, +1513 }; +1514 +1515 // a, and b have the same priority, c has higher priority +1516 let id_a = streams.open(Dir::Bi).unwrap(); +1517 let id_b = streams.open(Dir::Bi).unwrap(); +1518 let id_c = streams.open(Dir::Bi).unwrap(); +1519 +1520 let mut stream_a = SendStream { +1521 id: id_a, +1522 state: &mut server, +1523 pending: &mut pending, +1524 conn_state: &state, +1525 }; +1526 stream_a.write(&[b'a'; 100]).unwrap(); +1527 +1528 let mut stream_b = SendStream { +1529 id: id_b, +1530 state: &mut server, +1531 pending: &mut pending, +1532 conn_state: &state, +1533 }; +1534 stream_b.write(&[b'b'; 100]).unwrap(); +1535 +1536 let mut metas = vec![]; +1537 +1538 // Write the first chunk of stream_a +1539 let meta = server.write_frames_for_test(40, false); +1540 assert!(!meta.is_empty()); +1541 metas.extend(meta); 1542 -1543 #[test] -1544 fn unfair_priority_bump() { -1545 let mut server = make(Side::Server); -1546 server.set_params(&TransportParameters { -1547 initial_max_streams_bidi: 3u32.into(), -1548 initial_max_data: 300u32.into(), -1549 initial_max_stream_data_bidi_remote: 300u32.into(), -1550 ..TransportParameters::default() -1551 }); +1543 // Queue stream_c which has higher priority +1544 let mut stream_c = SendStream { +1545 id: id_c, +1546 state: &mut server, +1547 pending: &mut pending, +1548 conn_state: &state, +1549 }; +1550 stream_c.set_priority(1).unwrap(); +1551 stream_c.write(&[b'b'; 100]).unwrap(); 1552 -1553 let (mut pending, state) = (Retransmits::default(), ConnState::established()); -1554 let mut streams = Streams { -1555 state: &mut server, -1556 conn_state: &state, -1557 }; -1558 -1559 // a, and b have the same priority, c has higher priority -1560 let id_a = streams.open(Dir::Bi).unwrap(); -1561 let id_b = streams.open(Dir::Bi).unwrap(); -1562 let id_c = streams.open(Dir::Bi).unwrap(); -1563 -1564 let mut stream_a = SendStream { -1565 id: id_a, -1566 state: &mut server, -1567 pending: &mut pending, -1568 conn_state: &state, -1569 }; -1570 stream_a.write(&[b'a'; 100]).unwrap(); -1571 -1572 let mut stream_b = SendStream { -1573 id: id_b, -1574 state: &mut server, -1575 pending: &mut pending, -1576 conn_state: &state, -1577 }; -1578 stream_b.write(&[b'b'; 100]).unwrap(); -1579 -1580 let mut metas = vec![]; -1581 let buf = Vec::with_capacity(1024); -1582 -1583 // Write the first chunk of stream_a -1584 let mut chunk_buf = buf.limit(40); -1585 let meta = server.write_stream_frames(&mut chunk_buf, false, &mut Default::default()); -1586 let mut buf = chunk_buf.into_inner(); -1587 assert!(!meta.is_empty()); -1588 metas.extend(meta); -1589 -1590 // Queue stream_c which has higher priority -1591 let mut stream_c = SendStream { -1592 id: id_c, -1593 state: &mut server, +1553 // loop until all the streams are written +1554 loop { +1555 let meta = server.write_frames_for_test(40, false); +1556 if meta.is_empty() { +1557 break; +1558 } +1559 metas.extend(meta); +1560 } +1561 +1562 assert!(!server.can_send_stream_data()); +1563 assert_eq!(server.pending.len(), 0); +1564 +1565 let stream_ids = metas.iter().map(|m| m.id).collect::<Vec<_>>(); +1566 assert_eq!( +1567 stream_ids, +1568 // stream_c bumps stream_b but doesn't bump stream_a which had already been partly +1569 // written out +1570 vec![id_a, id_a, id_a, id_c, id_c, id_c, id_b, id_b, id_b] +1571 ); +1572 } +1573 +1574 #[test] +1575 fn stop_finished() { +1576 let mut client = make(Side::Client); +1577 let id = StreamId::new(Side::Server, Dir::Uni, 0); +1578 // Server finishes stream +1579 let _ = client +1580 .received( +1581 frame::Stream { +1582 id, +1583 offset: 0, +1584 fin: true, +1585 data: Bytes::from_static(&[0; 32]), +1586 }, +1587 32, +1588 ) +1589 .unwrap(); +1590 let mut pending = Retransmits::default(); +1591 let mut stream = RecvStream { +1592 id, +1593 state: &mut client, 1594 pending: &mut pending, -1595 conn_state: &state, -1596 }; -1597 stream_c.set_priority(1).unwrap(); -1598 stream_c.write(&[b'b'; 100]).unwrap(); +1595 }; +1596 stream.stop(0u32.into()).unwrap(); +1597 assert!(client.recv.get_mut(&id).is_none(), "stream is freed"); +1598 } 1599 -1600 // loop until all the streams are written -1601 loop { -1602 let mut chunk_buf = buf.limit(40); -1603 let meta = server.write_stream_frames(&mut chunk_buf, false, &mut Default::default()); -1604 buf = chunk_buf.into_inner(); -1605 if meta.is_empty() { -1606 break; -1607 } -1608 metas.extend(meta); -1609 } -1610 -1611 assert!(!server.can_send_stream_data()); -1612 assert_eq!(server.pending.len(), 0); -1613 -1614 let stream_ids = metas.iter().map(|m| m.id).collect::<Vec<_>>(); -1615 assert_eq!( -1616 stream_ids, -1617 // stream_c bumps stream_b but doesn't bump stream_a which had already been partly -1618 // written out -1619 vec![id_a, id_a, id_a, id_c, id_c, id_c, id_b, id_b, id_b] -1620 ); -1621 } -1622 -1623 #[test] -1624 fn stop_finished() { -1625 let mut client = make(Side::Client); -1626 let id = StreamId::new(Side::Server, Dir::Uni, 0); -1627 // Server finishes stream -1628 let _ = client -1629 .received( -1630 frame::Stream { -1631 id, -1632 offset: 0, -1633 fin: true, -1634 data: Bytes::from_static(&[0; 32]), -1635 }, -1636 32, -1637 ) -1638 .unwrap(); -1639 let mut pending = Retransmits::default(); -1640 let mut stream = RecvStream { -1641 id, -1642 state: &mut client, -1643 pending: &mut pending, -1644 }; -1645 stream.stop(0u32.into()).unwrap(); -1646 assert!(client.recv.get_mut(&id).is_none(), "stream is freed"); -1647 } -1648 -1649 // Verify that a stream that's been reset doesn't cause the appearance of pending data -1650 #[test] -1651 fn reset_stream_cannot_send() { -1652 let mut server = make(Side::Server); -1653 server.set_params(&TransportParameters { -1654 initial_max_streams_uni: 1u32.into(), -1655 initial_max_data: 42u32.into(), -1656 initial_max_stream_data_uni: 42u32.into(), -1657 ..TransportParameters::default() -1658 }); -1659 let (mut pending, state) = (Retransmits::default(), ConnState::established()); -1660 let mut streams = Streams { -1661 state: &mut server, -1662 conn_state: &state, -1663 }; -1664 -1665 let id = streams.open(Dir::Uni).unwrap(); -1666 let mut stream = SendStream { -1667 id, -1668 state: &mut server, -1669 pending: &mut pending, -1670 conn_state: &state, -1671 }; -1672 stream.write(b"hello").unwrap(); -1673 stream.reset(0u32.into()).unwrap(); -1674 -1675 assert_eq!(pending.reset_stream, &[(id, 0u32.into())]); -1676 assert!(!server.can_send_stream_data()); -1677 } -1678 -1679 #[test] -1680 fn stream_limit_fixed() { -1681 let mut client = make(Side::Client); -1682 // Open streams 0-127 -1683 assert_eq!( -1684 client.received( -1685 frame::Stream { -1686 id: StreamId::new(Side::Server, Dir::Uni, 127), -1687 offset: 0, -1688 fin: true, -1689 data: Bytes::from_static(&[]), -1690 }, -1691 0 -1692 ), -1693 Ok(ShouldTransmit(false)) -1694 ); -1695 // Try to open stream 128, exceeding limit -1696 assert_eq!( -1697 client -1698 .received( -1699 frame::Stream { -1700 id: StreamId::new(Side::Server, Dir::Uni, 128), -1701 offset: 0, -1702 fin: true, -1703 data: Bytes::from_static(&[]), -1704 }, -1705 0 -1706 ) -1707 .unwrap_err() -1708 .code, -1709 TransportErrorCode::STREAM_LIMIT_ERROR -1710 ); -1711 -1712 // Free stream 127 -1713 let mut pending = Retransmits::default(); -1714 let mut stream = RecvStream { -1715 id: StreamId::new(Side::Server, Dir::Uni, 127), -1716 state: &mut client, -1717 pending: &mut pending, -1718 }; -1719 stream.stop(0u32.into()).unwrap(); -1720 -1721 // Open stream 128 -1722 assert_eq!( -1723 client.received( -1724 frame::Stream { -1725 id: StreamId::new(Side::Server, Dir::Uni, 128), -1726 offset: 0, -1727 fin: true, -1728 data: Bytes::from_static(&[]), -1729 }, -1730 0 -1731 ), -1732 Ok(ShouldTransmit(false)) -1733 ); -1734 } -1735 -1736 #[test] -1737 fn stream_limit_grows() { -1738 let mut client = make(Side::Client); -1739 // Open streams 0-127 -1740 assert_eq!( -1741 client.received( -1742 frame::Stream { -1743 id: StreamId::new(Side::Server, Dir::Uni, 127), -1744 offset: 0, -1745 fin: true, -1746 data: Bytes::from_static(&[]), -1747 }, -1748 0 -1749 ), -1750 Ok(ShouldTransmit(false)) -1751 ); -1752 // Try to open stream 128, exceeding limit -1753 assert_eq!( -1754 client -1755 .received( -1756 frame::Stream { -1757 id: StreamId::new(Side::Server, Dir::Uni, 128), -1758 offset: 0, -1759 fin: true, -1760 data: Bytes::from_static(&[]), -1761 }, -1762 0 -1763 ) -1764 .unwrap_err() -1765 .code, -1766 TransportErrorCode::STREAM_LIMIT_ERROR -1767 ); -1768 -1769 // Relax limit by one -1770 client.set_max_concurrent(Dir::Uni, 129u32.into()); -1771 -1772 // Open stream 128 -1773 assert_eq!( -1774 client.received( -1775 frame::Stream { -1776 id: StreamId::new(Side::Server, Dir::Uni, 128), -1777 offset: 0, -1778 fin: true, -1779 data: Bytes::from_static(&[]), -1780 }, -1781 0 -1782 ), -1783 Ok(ShouldTransmit(false)) -1784 ); -1785 } -1786 -1787 #[test] -1788 fn stream_limit_shrinks() { -1789 let mut client = make(Side::Client); -1790 // Open streams 0-127 -1791 assert_eq!( -1792 client.received( -1793 frame::Stream { -1794 id: StreamId::new(Side::Server, Dir::Uni, 127), -1795 offset: 0, -1796 fin: true, -1797 data: Bytes::from_static(&[]), -1798 }, -1799 0 -1800 ), -1801 Ok(ShouldTransmit(false)) -1802 ); -1803 -1804 // Tighten limit by one -1805 client.set_max_concurrent(Dir::Uni, 127u32.into()); -1806 -1807 // Free stream 127 -1808 let mut pending = Retransmits::default(); -1809 let mut stream = RecvStream { -1810 id: StreamId::new(Side::Server, Dir::Uni, 127), -1811 state: &mut client, -1812 pending: &mut pending, -1813 }; -1814 stream.stop(0u32.into()).unwrap(); +1600 // Verify that a stream that's been reset doesn't cause the appearance of pending data +1601 #[test] +1602 fn reset_stream_cannot_send() { +1603 let mut server = make(Side::Server); +1604 server.set_params(&TransportParameters { +1605 initial_max_streams_uni: 1u32.into(), +1606 initial_max_data: 42u32.into(), +1607 initial_max_stream_data_uni: 42u32.into(), +1608 ..TransportParameters::default() +1609 }); +1610 let (mut pending, state) = (Retransmits::default(), ConnState::established()); +1611 let mut streams = Streams { +1612 state: &mut server, +1613 conn_state: &state, +1614 }; +1615 +1616 let id = streams.open(Dir::Uni).unwrap(); +1617 let mut stream = SendStream { +1618 id, +1619 state: &mut server, +1620 pending: &mut pending, +1621 conn_state: &state, +1622 }; +1623 stream.write(b"hello").unwrap(); +1624 stream.reset(0u32.into()).unwrap(); +1625 +1626 assert_eq!(pending.reset_stream, &[(id, 0u32.into())]); +1627 assert!(!server.can_send_stream_data()); +1628 } +1629 +1630 #[test] +1631 fn stream_limit_fixed() { +1632 let mut client = make(Side::Client); +1633 // Open streams 0-127 +1634 assert_eq!( +1635 client.received( +1636 frame::Stream { +1637 id: StreamId::new(Side::Server, Dir::Uni, 127), +1638 offset: 0, +1639 fin: true, +1640 data: Bytes::from_static(&[]), +1641 }, +1642 0 +1643 ), +1644 Ok(ShouldTransmit(false)) +1645 ); +1646 // Try to open stream 128, exceeding limit +1647 assert_eq!( +1648 client +1649 .received( +1650 frame::Stream { +1651 id: StreamId::new(Side::Server, Dir::Uni, 128), +1652 offset: 0, +1653 fin: true, +1654 data: Bytes::from_static(&[]), +1655 }, +1656 0 +1657 ) +1658 .unwrap_err() +1659 .code, +1660 TransportErrorCode::STREAM_LIMIT_ERROR +1661 ); +1662 +1663 // Free stream 127 +1664 let mut pending = Retransmits::default(); +1665 let mut stream = RecvStream { +1666 id: StreamId::new(Side::Server, Dir::Uni, 127), +1667 state: &mut client, +1668 pending: &mut pending, +1669 }; +1670 stream.stop(0u32.into()).unwrap(); +1671 +1672 // Open stream 128 +1673 assert_eq!( +1674 client.received( +1675 frame::Stream { +1676 id: StreamId::new(Side::Server, Dir::Uni, 128), +1677 offset: 0, +1678 fin: true, +1679 data: Bytes::from_static(&[]), +1680 }, +1681 0 +1682 ), +1683 Ok(ShouldTransmit(false)) +1684 ); +1685 } +1686 +1687 #[test] +1688 fn stream_limit_grows() { +1689 let mut client = make(Side::Client); +1690 // Open streams 0-127 +1691 assert_eq!( +1692 client.received( +1693 frame::Stream { +1694 id: StreamId::new(Side::Server, Dir::Uni, 127), +1695 offset: 0, +1696 fin: true, +1697 data: Bytes::from_static(&[]), +1698 }, +1699 0 +1700 ), +1701 Ok(ShouldTransmit(false)) +1702 ); +1703 // Try to open stream 128, exceeding limit +1704 assert_eq!( +1705 client +1706 .received( +1707 frame::Stream { +1708 id: StreamId::new(Side::Server, Dir::Uni, 128), +1709 offset: 0, +1710 fin: true, +1711 data: Bytes::from_static(&[]), +1712 }, +1713 0 +1714 ) +1715 .unwrap_err() +1716 .code, +1717 TransportErrorCode::STREAM_LIMIT_ERROR +1718 ); +1719 +1720 // Relax limit by one +1721 client.set_max_concurrent(Dir::Uni, 129u32.into()); +1722 +1723 // Open stream 128 +1724 assert_eq!( +1725 client.received( +1726 frame::Stream { +1727 id: StreamId::new(Side::Server, Dir::Uni, 128), +1728 offset: 0, +1729 fin: true, +1730 data: Bytes::from_static(&[]), +1731 }, +1732 0 +1733 ), +1734 Ok(ShouldTransmit(false)) +1735 ); +1736 } +1737 +1738 #[test] +1739 fn stream_limit_shrinks() { +1740 let mut client = make(Side::Client); +1741 // Open streams 0-127 +1742 assert_eq!( +1743 client.received( +1744 frame::Stream { +1745 id: StreamId::new(Side::Server, Dir::Uni, 127), +1746 offset: 0, +1747 fin: true, +1748 data: Bytes::from_static(&[]), +1749 }, +1750 0 +1751 ), +1752 Ok(ShouldTransmit(false)) +1753 ); +1754 +1755 // Tighten limit by one +1756 client.set_max_concurrent(Dir::Uni, 127u32.into()); +1757 +1758 // Free stream 127 +1759 let mut pending = Retransmits::default(); +1760 let mut stream = RecvStream { +1761 id: StreamId::new(Side::Server, Dir::Uni, 127), +1762 state: &mut client, +1763 pending: &mut pending, +1764 }; +1765 stream.stop(0u32.into()).unwrap(); +1766 +1767 // Try to open stream 128, still exceeding limit +1768 assert_eq!( +1769 client +1770 .received( +1771 frame::Stream { +1772 id: StreamId::new(Side::Server, Dir::Uni, 128), +1773 offset: 0, +1774 fin: true, +1775 data: Bytes::from_static(&[]), +1776 }, +1777 0 +1778 ) +1779 .unwrap_err() +1780 .code, +1781 TransportErrorCode::STREAM_LIMIT_ERROR +1782 ); +1783 +1784 // Free stream 126 +1785 assert_eq!( +1786 client.received_reset(frame::ResetStream { +1787 id: StreamId::new(Side::Server, Dir::Uni, 126), +1788 error_code: 0u32.into(), +1789 final_offset: 0u32.into(), +1790 }), +1791 Ok(ShouldTransmit(false)) +1792 ); +1793 let mut pending = Retransmits::default(); +1794 let mut stream = RecvStream { +1795 id: StreamId::new(Side::Server, Dir::Uni, 126), +1796 state: &mut client, +1797 pending: &mut pending, +1798 }; +1799 stream.stop(0u32.into()).unwrap(); +1800 +1801 // Open stream 128 +1802 assert_eq!( +1803 client.received( +1804 frame::Stream { +1805 id: StreamId::new(Side::Server, Dir::Uni, 128), +1806 offset: 0, +1807 fin: true, +1808 data: Bytes::from_static(&[]), +1809 }, +1810 0 +1811 ), +1812 Ok(ShouldTransmit(false)) +1813 ); +1814 } 1815 -1816 // Try to open stream 128, still exceeding limit -1817 assert_eq!( -1818 client -1819 .received( -1820 frame::Stream { -1821 id: StreamId::new(Side::Server, Dir::Uni, 128), -1822 offset: 0, -1823 fin: true, -1824 data: Bytes::from_static(&[]), -1825 }, -1826 0 -1827 ) -1828 .unwrap_err() -1829 .code, -1830 TransportErrorCode::STREAM_LIMIT_ERROR -1831 ); -1832 -1833 // Free stream 126 -1834 assert_eq!( -1835 client.received_reset(frame::ResetStream { -1836 id: StreamId::new(Side::Server, Dir::Uni, 126), -1837 error_code: 0u32.into(), -1838 final_offset: 0u32.into(), -1839 }), -1840 Ok(ShouldTransmit(false)) -1841 ); -1842 let mut pending = Retransmits::default(); -1843 let mut stream = RecvStream { -1844 id: StreamId::new(Side::Server, Dir::Uni, 126), -1845 state: &mut client, -1846 pending: &mut pending, -1847 }; -1848 stream.stop(0u32.into()).unwrap(); -1849 -1850 // Open stream 128 -1851 assert_eq!( -1852 client.received( -1853 frame::Stream { -1854 id: StreamId::new(Side::Server, Dir::Uni, 128), -1855 offset: 0, -1856 fin: true, -1857 data: Bytes::from_static(&[]), -1858 }, -1859 0 -1860 ), -1861 Ok(ShouldTransmit(false)) -1862 ); -1863 } -1864 -1865 #[test] -1866 fn remote_stream_capacity() { -1867 let mut client = make(Side::Client); -1868 for _ in 0..2 { -1869 client.set_max_concurrent(Dir::Uni, 200u32.into()); -1870 client.set_max_concurrent(Dir::Bi, 201u32.into()); -1871 assert_eq!(client.recv.len(), 200 + 201); -1872 assert_eq!(client.max_remote[Dir::Uni as usize], 200); -1873 assert_eq!(client.max_remote[Dir::Bi as usize], 201); -1874 } -1875 } -1876 -1877 #[test] -1878 fn expand_receive_window() { -1879 let mut server = make(Side::Server); -1880 let new_receive_window = 2 * server.receive_window as u32; -1881 let expanded = server.set_receive_window(new_receive_window.into()); -1882 assert!(expanded); -1883 assert_eq!(server.receive_window, new_receive_window as u64); -1884 assert_eq!(server.local_max_data, new_receive_window as u64); -1885 assert_eq!(server.receive_window_shrink_debt, 0); -1886 let prev_local_max_data = server.local_max_data; -1887 -1888 // credit, expecting all of them added to local_max_data -1889 let credits = 1024u64; -1890 let should_transmit = server.add_read_credits(credits); -1891 assert_eq!(server.receive_window_shrink_debt, 0); -1892 assert_eq!(server.local_max_data, prev_local_max_data + credits); -1893 assert!(should_transmit.should_transmit()); -1894 } -1895 -1896 #[test] -1897 fn shrink_receive_window() { -1898 let mut server = make(Side::Server); -1899 let new_receive_window = server.receive_window as u32 / 2; -1900 let prev_local_max_data = server.local_max_data; -1901 -1902 // shrink the receive_winbow, local_max_data is not expected to be changed -1903 let shrink_diff = server.receive_window - new_receive_window as u64; -1904 let expanded = server.set_receive_window(new_receive_window.into()); -1905 assert!(!expanded); -1906 assert_eq!(server.receive_window, new_receive_window as u64); -1907 assert_eq!(server.local_max_data, prev_local_max_data); -1908 assert_eq!(server.receive_window_shrink_debt, shrink_diff); -1909 let prev_local_max_data = server.local_max_data; -1910 -1911 // credit twice, local_max_data does not change as it is absorbed by receive_window_shrink_debt -1912 let credits = 1024u64; -1913 for _ in 0..2 { -1914 let expected_receive_window_shrink_debt = server.receive_window_shrink_debt - credits; -1915 let should_transmit = server.add_read_credits(credits); -1916 assert_eq!( -1917 server.receive_window_shrink_debt, -1918 expected_receive_window_shrink_debt -1919 ); -1920 assert_eq!(server.local_max_data, prev_local_max_data); -1921 assert!(!should_transmit.should_transmit()); -1922 } -1923 -1924 // credit again which exceeds all remaining expected_receive_window_shrink_debt -1925 let credits = 1024 * 512; -1926 let prev_local_max_data = server.local_max_data; -1927 let expected_local_max_data = -1928 server.local_max_data + (credits - server.receive_window_shrink_debt); -1929 let _should_transmit = server.add_read_credits(credits); -1930 assert_eq!(server.receive_window_shrink_debt, 0); -1931 assert_eq!(server.local_max_data, expected_local_max_data); -1932 assert!(server.local_max_data > prev_local_max_data); -1933 -1934 // credit again, all should be added to local_max_data -1935 let credits = 1024 * 512; -1936 let expected_local_max_data = server.local_max_data + credits; -1937 let should_transmit = server.add_read_credits(credits); -1938 assert_eq!(server.receive_window_shrink_debt, 0); -1939 assert_eq!(server.local_max_data, expected_local_max_data); -1940 assert!(should_transmit.should_transmit()); -1941 } -1942 -1943 #[test] -1944 fn expand_send_window() { -1945 let mut server = make(Side::Server); -1946 -1947 let initial_send_window = server.send_window; -1948 let larger_send_window = initial_send_window * 2; -1949 -1950 // Set `initial_max_data` larger than `send_window` so we're limited by local flow control -1951 server.set_params(&TransportParameters { -1952 initial_max_data: VarInt::MAX, -1953 initial_max_stream_data_uni: VarInt::MAX, -1954 initial_max_streams_uni: VarInt::from_u32(100), -1955 ..TransportParameters::default() +1816 #[test] +1817 fn remote_stream_capacity() { +1818 let mut client = make(Side::Client); +1819 for _ in 0..2 { +1820 client.set_max_concurrent(Dir::Uni, 200u32.into()); +1821 client.set_max_concurrent(Dir::Bi, 201u32.into()); +1822 assert_eq!(client.recv.len(), 200 + 201); +1823 assert_eq!(client.max_remote[Dir::Uni as usize], 200); +1824 assert_eq!(client.max_remote[Dir::Bi as usize], 201); +1825 } +1826 } +1827 +1828 #[test] +1829 fn expand_receive_window() { +1830 let mut server = make(Side::Server); +1831 let new_receive_window = 2 * server.receive_window as u32; +1832 let expanded = server.set_receive_window(new_receive_window.into()); +1833 assert!(expanded); +1834 assert_eq!(server.receive_window, new_receive_window as u64); +1835 assert_eq!(server.local_max_data, new_receive_window as u64); +1836 assert_eq!(server.receive_window_shrink_debt, 0); +1837 let prev_local_max_data = server.local_max_data; +1838 +1839 // credit, expecting all of them added to local_max_data +1840 let credits = 1024u64; +1841 let should_transmit = server.add_read_credits(credits); +1842 assert_eq!(server.receive_window_shrink_debt, 0); +1843 assert_eq!(server.local_max_data, prev_local_max_data + credits); +1844 assert!(should_transmit.should_transmit()); +1845 } +1846 +1847 #[test] +1848 fn shrink_receive_window() { +1849 let mut server = make(Side::Server); +1850 let new_receive_window = server.receive_window as u32 / 2; +1851 let prev_local_max_data = server.local_max_data; +1852 +1853 // shrink the receive_winbow, local_max_data is not expected to be changed +1854 let shrink_diff = server.receive_window - new_receive_window as u64; +1855 let expanded = server.set_receive_window(new_receive_window.into()); +1856 assert!(!expanded); +1857 assert_eq!(server.receive_window, new_receive_window as u64); +1858 assert_eq!(server.local_max_data, prev_local_max_data); +1859 assert_eq!(server.receive_window_shrink_debt, shrink_diff); +1860 let prev_local_max_data = server.local_max_data; +1861 +1862 // credit twice, local_max_data does not change as it is absorbed by receive_window_shrink_debt +1863 let credits = 1024u64; +1864 for _ in 0..2 { +1865 let expected_receive_window_shrink_debt = server.receive_window_shrink_debt - credits; +1866 let should_transmit = server.add_read_credits(credits); +1867 assert_eq!( +1868 server.receive_window_shrink_debt, +1869 expected_receive_window_shrink_debt +1870 ); +1871 assert_eq!(server.local_max_data, prev_local_max_data); +1872 assert!(!should_transmit.should_transmit()); +1873 } +1874 +1875 // credit again which exceeds all remaining expected_receive_window_shrink_debt +1876 let credits = 1024 * 512; +1877 let prev_local_max_data = server.local_max_data; +1878 let expected_local_max_data = +1879 server.local_max_data + (credits - server.receive_window_shrink_debt); +1880 let _should_transmit = server.add_read_credits(credits); +1881 assert_eq!(server.receive_window_shrink_debt, 0); +1882 assert_eq!(server.local_max_data, expected_local_max_data); +1883 assert!(server.local_max_data > prev_local_max_data); +1884 +1885 // credit again, all should be added to local_max_data +1886 let credits = 1024 * 512; +1887 let expected_local_max_data = server.local_max_data + credits; +1888 let should_transmit = server.add_read_credits(credits); +1889 assert_eq!(server.receive_window_shrink_debt, 0); +1890 assert_eq!(server.local_max_data, expected_local_max_data); +1891 assert!(should_transmit.should_transmit()); +1892 } +1893 +1894 #[test] +1895 fn expand_send_window() { +1896 let mut server = make(Side::Server); +1897 +1898 let initial_send_window = server.send_window; +1899 let larger_send_window = initial_send_window * 2; +1900 +1901 // Set `initial_max_data` larger than `send_window` so we're limited by local flow control +1902 server.set_params(&TransportParameters { +1903 initial_max_data: VarInt::MAX, +1904 initial_max_stream_data_uni: VarInt::MAX, +1905 initial_max_streams_uni: VarInt::from_u32(100), +1906 ..TransportParameters::default() +1907 }); +1908 +1909 assert_eq!(server.write_limit(), initial_send_window); +1910 assert_eq!(server.poll(), None); +1911 +1912 let mut retransmits = Retransmits::default(); +1913 let conn_state = ConnState::established(); +1914 +1915 let stream_id = Streams { +1916 state: &mut server, +1917 conn_state: &conn_state, +1918 } +1919 .open(Dir::Uni) +1920 .expect("should be able to open a stream"); +1921 +1922 let mut stream = SendStream { +1923 id: stream_id, +1924 state: &mut server, +1925 pending: &mut retransmits, +1926 conn_state: &conn_state, +1927 }; +1928 +1929 // Check that the stream accepts `initial_send_window` bytes +1930 let initial_send_len = initial_send_window as usize; +1931 let data = vec![0xFFu8; initial_send_len]; +1932 +1933 assert_eq!(stream.write(&data), Ok(initial_send_len)); +1934 +1935 // Try to write the same data again, observe that it's blocked +1936 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +1937 +1938 // Check that we get a `Writable` event after increasing the send window +1939 stream.state.set_send_window(larger_send_window); +1940 assert_eq!( +1941 stream.state.poll(), +1942 Some(StreamEvent::Writable { id: stream_id }) +1943 ); +1944 +1945 // Check that the stream accepts the exact same amount of data again +1946 assert_eq!(stream.write(&data), Ok(initial_send_len)); +1947 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +1948 +1949 assert_eq!(stream.state.poll(), None); +1950 +1951 // Ack the data +1952 stream.state.received_ack_of(frame::StreamMeta { +1953 id: stream_id, +1954 offsets: 0..larger_send_window, +1955 fin: false, 1956 }); 1957 -1958 assert_eq!(server.write_limit(), initial_send_window); -1959 assert_eq!(server.poll(), None); -1960 -1961 let mut retransmits = Retransmits::default(); -1962 let conn_state = ConnState::established(); -1963 -1964 let stream_id = Streams { -1965 state: &mut server, -1966 conn_state: &conn_state, -1967 } -1968 .open(Dir::Uni) -1969 .expect("should be able to open a stream"); -1970 -1971 let mut stream = SendStream { -1972 id: stream_id, -1973 state: &mut server, -1974 pending: &mut retransmits, -1975 conn_state: &conn_state, -1976 }; -1977 -1978 // Check that the stream accepts `initial_send_window` bytes -1979 let initial_send_len = initial_send_window as usize; -1980 let data = vec![0xFFu8; initial_send_len]; -1981 -1982 assert_eq!(stream.write(&data), Ok(initial_send_len)); +1958 assert_eq!( +1959 stream.state.poll(), +1960 Some(StreamEvent::Writable { id: stream_id }) +1961 ); +1962 +1963 // Check that our full send window is available again +1964 assert_eq!(stream.write(&data), Ok(initial_send_len)); +1965 assert_eq!(stream.write(&data), Ok(initial_send_len)); +1966 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +1967 } +1968 +1969 #[test] +1970 fn shrink_send_window() { +1971 let mut server = make(Side::Server); +1972 +1973 let initial_send_window = server.send_window; +1974 let smaller_send_window = server.send_window / 2; +1975 +1976 // Set `initial_max_data` larger than `send_window` so we're limited by local flow control +1977 server.set_params(&TransportParameters { +1978 initial_max_data: VarInt::MAX, +1979 initial_max_stream_data_uni: VarInt::MAX, +1980 initial_max_streams_uni: VarInt::from_u32(100), +1981 ..TransportParameters::default() +1982 }); 1983 -1984 // Try to write the same data again, observe that it's blocked -1985 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +1984 assert_eq!(server.write_limit(), initial_send_window); +1985 assert_eq!(server.poll(), None); 1986 -1987 // Check that we get a `Writable` event after increasing the send window -1988 stream.state.set_send_window(larger_send_window); -1989 assert_eq!( -1990 stream.state.poll(), -1991 Some(StreamEvent::Writable { id: stream_id }) -1992 ); -1993 -1994 // Check that the stream accepts the exact same amount of data again -1995 assert_eq!(stream.write(&data), Ok(initial_send_len)); -1996 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); -1997 -1998 assert_eq!(stream.state.poll(), None); -1999 -2000 // Ack the data -2001 stream.state.received_ack_of(frame::StreamMeta { -2002 id: stream_id, -2003 offsets: 0..larger_send_window, -2004 fin: false, -2005 }); -2006 -2007 assert_eq!( -2008 stream.state.poll(), -2009 Some(StreamEvent::Writable { id: stream_id }) -2010 ); +1987 let mut retransmits = Retransmits::default(); +1988 let conn_state = ConnState::established(); +1989 +1990 let stream_id = Streams { +1991 state: &mut server, +1992 conn_state: &conn_state, +1993 } +1994 .open(Dir::Uni) +1995 .expect("should be able to open a stream"); +1996 +1997 let mut stream = SendStream { +1998 id: stream_id, +1999 state: &mut server, +2000 pending: &mut retransmits, +2001 conn_state: &conn_state, +2002 }; +2003 +2004 let initial_send_len = initial_send_window as usize; +2005 +2006 let data = vec![0xFFu8; initial_send_len]; +2007 +2008 // Assert that the full send window is accepted +2009 assert_eq!(stream.write(&data), Ok(initial_send_len)); +2010 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); 2011 -2012 // Check that our full send window is available again -2013 assert_eq!(stream.write(&data), Ok(initial_send_len)); -2014 assert_eq!(stream.write(&data), Ok(initial_send_len)); -2015 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); -2016 } -2017 -2018 #[test] -2019 fn shrink_send_window() { -2020 let mut server = make(Side::Server); -2021 -2022 let initial_send_window = server.send_window; -2023 let smaller_send_window = server.send_window / 2; -2024 -2025 // Set `initial_max_data` larger than `send_window` so we're limited by local flow control -2026 server.set_params(&TransportParameters { -2027 initial_max_data: VarInt::MAX, -2028 initial_max_stream_data_uni: VarInt::MAX, -2029 initial_max_streams_uni: VarInt::from_u32(100), -2030 ..TransportParameters::default() -2031 }); -2032 -2033 assert_eq!(server.write_limit(), initial_send_window); -2034 assert_eq!(server.poll(), None); -2035 -2036 let mut retransmits = Retransmits::default(); -2037 let conn_state = ConnState::established(); +2012 assert_eq!(stream.state.write_limit(), 0); +2013 assert_eq!(stream.state.poll(), None); +2014 +2015 // Shrink our send window, assert that it's still not writable +2016 stream.state.set_send_window(smaller_send_window); +2017 assert_eq!(stream.state.write_limit(), 0); +2018 assert_eq!(stream.state.poll(), None); +2019 +2020 // Assert that data is still not accepted +2021 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +2022 +2023 // Ack some data, assert that writes are still not accepted due to outstanding sends +2024 stream.state.received_ack_of(frame::StreamMeta { +2025 id: stream_id, +2026 offsets: 0..smaller_send_window, +2027 fin: false, +2028 }); +2029 +2030 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +2031 +2032 // Ack the rest of the data +2033 stream.state.received_ack_of(frame::StreamMeta { +2034 id: stream_id, +2035 offsets: smaller_send_window..initial_send_window, +2036 fin: false, +2037 }); 2038 -2039 let stream_id = Streams { -2040 state: &mut server, -2041 conn_state: &conn_state, -2042 } -2043 .open(Dir::Uni) -2044 .expect("should be able to open a stream"); +2039 // This should generate a `Writable` event +2040 assert_eq!( +2041 stream.state.poll(), +2042 Some(StreamEvent::Writable { id: stream_id }) +2043 ); +2044 assert_eq!(stream.state.write_limit(), smaller_send_window); 2045 -2046 let mut stream = SendStream { -2047 id: stream_id, -2048 state: &mut server, -2049 pending: &mut retransmits, -2050 conn_state: &conn_state, -2051 }; -2052 -2053 let initial_send_len = initial_send_window as usize; -2054 -2055 let data = vec![0xFFu8; initial_send_len]; -2056 -2057 // Assert that the full send window is accepted -2058 assert_eq!(stream.write(&data), Ok(initial_send_len)); -2059 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); -2060 -2061 assert_eq!(stream.state.write_limit(), 0); -2062 assert_eq!(stream.state.poll(), None); -2063 -2064 // Shrink our send window, assert that it's still not writable -2065 stream.state.set_send_window(smaller_send_window); -2066 assert_eq!(stream.state.write_limit(), 0); -2067 assert_eq!(stream.state.poll(), None); -2068 -2069 // Assert that data is still not accepted -2070 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); -2071 -2072 // Ack some data, assert that writes are still not accepted due to outstanding sends -2073 stream.state.received_ack_of(frame::StreamMeta { -2074 id: stream_id, -2075 offsets: 0..smaller_send_window, -2076 fin: false, -2077 }); -2078 -2079 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); -2080 -2081 // Ack the rest of the data -2082 stream.state.received_ack_of(frame::StreamMeta { -2083 id: stream_id, -2084 offsets: smaller_send_window..initial_send_window, -2085 fin: false, -2086 }); -2087 -2088 // This should generate a `Writable` event -2089 assert_eq!( -2090 stream.state.poll(), -2091 Some(StreamEvent::Writable { id: stream_id }) -2092 ); -2093 assert_eq!(stream.state.write_limit(), smaller_send_window); -2094 -2095 // Assert that only `smaller_send_window` bytes are accepted -2096 assert_eq!(stream.write(&data), Ok(smaller_send_window as usize)); -2097 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); -2098 } -2099} \ No newline at end of file +2046 // Assert that only `smaller_send_window` bytes are accepted +2047 assert_eq!(stream.write(&data), Ok(smaller_send_window as usize)); +2048 assert_eq!(stream.write(&data), Err(WriteError::Blocked)); +2049 } +2050} \ No newline at end of file diff --git a/pr/323/docs/src/iroh_quinn_proto/frame.rs.html b/pr/323/docs/src/iroh_quinn_proto/frame.rs.html index bb19305c3..477b7a316 100644 --- a/pr/323/docs/src/iroh_quinn_proto/frame.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/frame.rs.html @@ -1,5 +1,5 @@ frame.rs - source

iroh_quinn_proto/
frame.rs

1use std::{
-2    fmt::{self, Write},
+2    fmt::{self, Display, Write},
 3    mem,
 4    net::{IpAddr, SocketAddr},
 5    ops::{Range, RangeInclusive},
@@ -20,2277 +20,2621 @@
 20#[cfg(feature = "arbitrary")]
 21use arbitrary::Arbitrary;
 22
-23#[derive(
-24    Copy, Clone, Eq, PartialEq, derive_more::Debug, derive_more::Display, enum_assoc::Assoc,
-25)]
-26#[display(rename_all = "SCREAMING_SNAKE_CASE")]
-27#[allow(missing_docs)]
-28#[func(
-29    pub(crate) const fn to_u64(self) -> u64,
-30    const fn from_u64(rev: u64) -> Option<Self>,
-31)]
-32pub enum FrameType {
-33    #[assoc(to_u64 = 0x00)]
-34    Padding,
-35    #[assoc(to_u64 = 0x01)]
-36    Ping,
-37    #[assoc(to_u64 = 0x02)]
-38    Ack,
-39    #[assoc(to_u64 = 0x03)]
-40    AckEcn,
-41    #[assoc(to_u64 = 0x04)]
-42    ResetStream,
-43    #[assoc(to_u64 = 0x05)]
-44    StopSending,
-45    #[assoc(to_u64 = 0x06)]
-46    Crypto,
-47    #[assoc(to_u64 = 0x07)]
-48    NewToken,
-49    // STREAM
-50    #[assoc(to_u64 = _0.to_u64())]
-51    Stream(StreamInfo),
-52    #[assoc(to_u64 = 0x10)]
-53    MaxData,
-54    #[assoc(to_u64 = 0x11)]
-55    MaxStreamData,
-56    #[assoc(to_u64 = 0x12)]
-57    MaxStreamsBidi,
-58    #[assoc(to_u64 = 0x13)]
-59    MaxStreamsUni,
-60    #[assoc(to_u64 = 0x14)]
-61    DataBlocked,
-62    #[assoc(to_u64 = 0x15)]
-63    StreamDataBlocked,
-64    #[assoc(to_u64 = 0x16)]
-65    StreamsBlockedBidi,
-66    #[assoc(to_u64 = 0x17)]
-67    StreamsBlockedUni,
-68    #[assoc(to_u64 = 0x18)]
-69    NewConnectionId,
-70    #[assoc(to_u64 = 0x19)]
-71    RetireConnectionId,
-72    #[assoc(to_u64 = 0x1a)]
-73    PathChallenge,
-74    #[assoc(to_u64 = 0x1b)]
-75    PathResponse,
-76    #[assoc(to_u64 = 0x1c)]
-77    ConnectionClose,
-78    #[assoc(to_u64 = 0x1d)]
-79    ApplicationClose,
-80    #[assoc(to_u64 = 0x1e)]
-81    HandshakeDone,
-82    // ACK Frequency
-83    #[assoc(to_u64 = 0xaf)]
-84    AckFrequency,
-85    #[assoc(to_u64 = 0x1f)]
-86    ImmediateAck,
-87    // DATAGRAM
-88    #[assoc(to_u64 = _0.to_u64())]
-89    Datagram(DatagramInfo),
-90    // ADDRESS DISCOVERY REPORT
-91    #[assoc(to_u64 = 0x9f81a6)]
-92    ObservedIpv4Addr,
-93    #[assoc(to_u64 = 0x9f81a7)]
-94    ObservedIpv6Addr,
-95    // Multipath
-96    #[assoc(to_u64 = 0x3e)]
-97    PathAck,
-98    #[assoc(to_u64 = 0x3f)]
-99    PathAckEcn,
-100    #[assoc(to_u64 = 0x3e75)]
-101    PathAbandon,
-102    #[assoc(to_u64 = 0x3e76)]
-103    PathStatusBackup,
-104    #[assoc(to_u64 = 0x3e77)]
-105    PathStatusAvailable,
-106    #[assoc(to_u64 = 0x3e78)]
-107    PathNewConnectionId,
-108    #[assoc(to_u64 = 0x3e79)]
-109    PathRetireConnectionId,
-110    #[assoc(to_u64 = 0x3e7a)]
-111    MaxPathId,
-112    #[assoc(to_u64 = 0x3e7b)]
-113    PathsBlocked,
-114    #[assoc(to_u64 = 0x3e7c)]
-115    PathCidsBlocked,
-116    // IROH'S NAT TRAVERSAL
-117    #[assoc(to_u64 = 0x3d7f90)]
-118    AddIpv4Address,
-119    #[assoc(to_u64 = 0x3d7f91)]
-120    AddIpv6Address,
-121    #[assoc(to_u64 = 0x3d7f92)]
-122    ReachOutAtIpv4,
-123    #[assoc(to_u64 = 0x3d7f93)]
-124    ReachOutAtIpv6,
-125    #[assoc(to_u64 = 0x3d7f94)]
-126    RemoveAddress,
-127}
-128
-129/// Encounter a frame ID that was not valid.
-130#[derive(Debug, PartialEq, Eq)]
-131pub struct InvalidFrameId(u64);
-132
-133impl TryFrom<u64> for FrameType {
-134    type Error = InvalidFrameId;
-135    fn try_from(value: u64) -> Result<Self, Self::Error> {
-136        match Self::from_u64(value) {
-137            Some(t) => Ok(t),
-138            None => {
-139                if DatagramInfo::VALUES.contains(&value) {
-140                    return Ok(Self::Datagram(DatagramInfo(value as u8)));
-141                }
-142                if StreamInfo::VALUES.contains(&value) {
-143                    return Ok(Self::Stream(StreamInfo(value as u8)));
+23#[cfg(feature = "qlog")]
+24use super::connection::qlog::ToQlog;
+25
+26#[derive(
+27    Copy, Clone, Eq, PartialEq, derive_more::Debug, derive_more::Display, enum_assoc::Assoc,
+28)]
+29#[display(rename_all = "SCREAMING_SNAKE_CASE")]
+30#[allow(missing_docs)]
+31#[func(
+32    pub(crate) const fn to_u64(self) -> u64,
+33    const fn from_u64(rev: u64) -> Option<Self>,
+34)]
+35pub enum FrameType {
+36    #[assoc(to_u64 = 0x00)]
+37    Padding,
+38    #[assoc(to_u64 = 0x01)]
+39    Ping,
+40    #[assoc(to_u64 = 0x02)]
+41    Ack,
+42    #[assoc(to_u64 = 0x03)]
+43    AckEcn,
+44    #[assoc(to_u64 = 0x04)]
+45    ResetStream,
+46    #[assoc(to_u64 = 0x05)]
+47    StopSending,
+48    #[assoc(to_u64 = 0x06)]
+49    Crypto,
+50    #[assoc(to_u64 = 0x07)]
+51    NewToken,
+52    // STREAM
+53    #[assoc(to_u64 = _0.to_u64())]
+54    Stream(StreamInfo),
+55    #[assoc(to_u64 = 0x10)]
+56    MaxData,
+57    #[assoc(to_u64 = 0x11)]
+58    MaxStreamData,
+59    #[assoc(to_u64 = 0x12)]
+60    MaxStreamsBidi,
+61    #[assoc(to_u64 = 0x13)]
+62    MaxStreamsUni,
+63    #[assoc(to_u64 = 0x14)]
+64    DataBlocked,
+65    #[assoc(to_u64 = 0x15)]
+66    StreamDataBlocked,
+67    #[assoc(to_u64 = 0x16)]
+68    StreamsBlockedBidi,
+69    #[assoc(to_u64 = 0x17)]
+70    StreamsBlockedUni,
+71    #[assoc(to_u64 = 0x18)]
+72    NewConnectionId,
+73    #[assoc(to_u64 = 0x19)]
+74    RetireConnectionId,
+75    #[assoc(to_u64 = 0x1a)]
+76    PathChallenge,
+77    #[assoc(to_u64 = 0x1b)]
+78    PathResponse,
+79    #[assoc(to_u64 = 0x1c)]
+80    ConnectionClose,
+81    #[assoc(to_u64 = 0x1d)]
+82    ApplicationClose,
+83    #[assoc(to_u64 = 0x1e)]
+84    HandshakeDone,
+85    // ACK Frequency
+86    #[assoc(to_u64 = 0xaf)]
+87    AckFrequency,
+88    #[assoc(to_u64 = 0x1f)]
+89    ImmediateAck,
+90    // DATAGRAM
+91    #[assoc(to_u64 = _0.to_u64())]
+92    Datagram(DatagramInfo),
+93    // ADDRESS DISCOVERY REPORT
+94    #[assoc(to_u64 = 0x9f81a6)]
+95    ObservedIpv4Addr,
+96    #[assoc(to_u64 = 0x9f81a7)]
+97    ObservedIpv6Addr,
+98    // Multipath
+99    #[assoc(to_u64 = 0x3e)]
+100    PathAck,
+101    #[assoc(to_u64 = 0x3f)]
+102    PathAckEcn,
+103    #[assoc(to_u64 = 0x3e75)]
+104    PathAbandon,
+105    #[assoc(to_u64 = 0x3e76)]
+106    PathStatusBackup,
+107    #[assoc(to_u64 = 0x3e77)]
+108    PathStatusAvailable,
+109    #[assoc(to_u64 = 0x3e78)]
+110    PathNewConnectionId,
+111    #[assoc(to_u64 = 0x3e79)]
+112    PathRetireConnectionId,
+113    #[assoc(to_u64 = 0x3e7a)]
+114    MaxPathId,
+115    #[assoc(to_u64 = 0x3e7b)]
+116    PathsBlocked,
+117    #[assoc(to_u64 = 0x3e7c)]
+118    PathCidsBlocked,
+119    // IROH'S NAT TRAVERSAL
+120    #[assoc(to_u64 = 0x3d7f90)]
+121    AddIpv4Address,
+122    #[assoc(to_u64 = 0x3d7f91)]
+123    AddIpv6Address,
+124    #[assoc(to_u64 = 0x3d7f92)]
+125    ReachOutAtIpv4,
+126    #[assoc(to_u64 = 0x3d7f93)]
+127    ReachOutAtIpv6,
+128    #[assoc(to_u64 = 0x3d7f94)]
+129    RemoveAddress,
+130}
+131
+132/// Encounter a frame ID that was not valid.
+133#[derive(Debug, PartialEq, Eq)]
+134pub struct InvalidFrameId(u64);
+135
+136impl TryFrom<u64> for FrameType {
+137    type Error = InvalidFrameId;
+138    fn try_from(value: u64) -> Result<Self, Self::Error> {
+139        match Self::from_u64(value) {
+140            Some(t) => Ok(t),
+141            None => {
+142                if DatagramInfo::VALUES.contains(&value) {
+143                    return Ok(Self::Datagram(DatagramInfo(value as u8)));
 144                }
-145                Err(InvalidFrameId(value))
-146            }
-147        }
-148    }
-149}
-150
-151impl FrameType {
-152    /// The encoded size of this [`FrameType`].
-153    const fn size(&self) -> usize {
-154        VarInt(self.to_u64()).size()
-155    }
-156}
-157
-158impl Decodable for FrameType {
-159    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
-160        Self::try_from(buf.get_var()?).map_err(|_| coding::UnexpectedEnd)
-161    }
-162}
-163
-164impl Encodable for FrameType {
-165    fn encode<B: BufMut>(&self, buf: &mut B) {
-166        buf.write_var(self.to_u64());
-167    }
-168}
-169
-170pub(crate) trait FrameStruct {
-171    /// Smallest number of bytes this type of frame is guaranteed to fit within.
-172    const SIZE_BOUND: usize;
-173}
-174
-175/// The type used to refer to [`FrameType`]s in closing and transport errors.
-176#[derive(Copy, Clone, Eq, PartialEq, derive_more::Debug, derive_more::Display)]
-177pub enum MaybeFrame {
-178    /// Not attributed to any particular [`FrameType`].
-179    None,
-180    /// Attributed to some frame type this implementation does not recognize.
-181    #[display("UNKNOWN{:02x}", _0)]
-182    #[debug("Unknown{:02x}", _0)]
-183    Unknown(u64),
-184    /// Attributed to a specific [`FrameType`], never [`FrameType::Padding`].
-185    Known(FrameType),
-186}
-187
-188impl MaybeFrame {
-189    /// Encoded size of this [`MaybeFrame`].
-190    const fn size(&self) -> usize {
-191        match self {
-192            Self::None => VarInt(0).size(),
-193            Self::Unknown(other) => VarInt(*other).size(),
-194            Self::Known(frame_type) => frame_type.size(),
-195        }
-196    }
-197}
-198
-199impl Decodable for MaybeFrame {
-200    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
-201        match FrameType::try_from(buf.get_var()?) {
-202            Ok(FrameType::Padding) => Ok(Self::None),
-203            Ok(other_frame) => Ok(Self::Known(other_frame)),
-204            Err(InvalidFrameId(other)) => Ok(Self::Unknown(other)),
-205        }
-206    }
-207}
-208
-209impl Encodable for MaybeFrame {
-210    fn encode<B: BufMut>(&self, buf: &mut B) {
-211        match self {
-212            Self::None => buf.write_var(0u64),
-213            Self::Unknown(frame_id) => buf.write_var(*frame_id),
-214            Self::Known(frame_type) => buf.write(*frame_type),
-215        }
-216    }
-217}
-218
-219#[allow(missing_docs)]
-220#[derive(Debug, Copy, Clone, Eq, PartialEq, derive_more::Display)]
-221#[display("STREAM")]
-222pub struct StreamInfo(u8);
-223
-224impl StreamInfo {
-225    const VALUES: RangeInclusive<u64> = RangeInclusive::new(0x08, 0x0f);
-226    fn fin(self) -> bool {
-227        self.0 & 0x01 != 0
-228    }
-229    fn len(self) -> bool {
-230        self.0 & 0x02 != 0
-231    }
-232    fn off(self) -> bool {
-233        self.0 & 0x04 != 0
-234    }
-235
-236    const fn to_u64(self) -> u64 {
-237        self.0 as u64
-238    }
-239}
-240
-241#[allow(missing_docs)]
-242#[derive(Debug, Copy, Clone, Eq, PartialEq, derive_more::Display)]
-243#[display("DATAGRAM")]
-244pub struct DatagramInfo(u8);
-245
-246impl DatagramInfo {
-247    const VALUES: RangeInclusive<u64> = RangeInclusive::new(0x30, 0x31);
+145                if StreamInfo::VALUES.contains(&value) {
+146                    return Ok(Self::Stream(StreamInfo(value as u8)));
+147                }
+148                Err(InvalidFrameId(value))
+149            }
+150        }
+151    }
+152}
+153
+154impl FrameType {
+155    /// The encoded size of this [`FrameType`].
+156    const fn size(&self) -> usize {
+157        VarInt(self.to_u64()).size()
+158    }
+159}
+160
+161impl Decodable for FrameType {
+162    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+163        Self::try_from(buf.get_var()?).map_err(|_| coding::UnexpectedEnd)
+164    }
+165}
+166
+167impl Encodable for FrameType {
+168    fn encode<B: BufMut>(&self, buf: &mut B) {
+169        buf.write_var(self.to_u64());
+170    }
+171}
+172
+173/// Wrapper type for the encodable frames.
+174///
+175/// This includes some "encoder" types instead of the actual read frame, when writing directly to
+176/// a buffer is more efficient than building the Frame itself.
+177#[derive(derive_more::From, enum_assoc::Assoc, derive_more::Display)]
+178#[func(fn encode_inner<B: BufMut>(&self, buf: &mut B) {_0.encode(buf)})]
+179#[func(pub(crate) const fn get_type(&self) -> FrameType {_0.get_type()})]
+180#[cfg_attr(feature = "qlog", func(pub(crate) fn to_qlog(&self) -> qlog::events::quic::QuicFrame {_0.to_qlog()}))]
+181pub(super) enum EncodableFrame<'a> {
+182    PathAck(PathAckEncoder<'a>),
+183    Ack(AckEncoder<'a>),
+184    Close(CloseEncoder<'a>),
+185    PathResponse(PathResponse),
+186    HandshakeDone(HandshakeDone),
+187    ReachOut(ReachOut),
+188    ObservedAddr(ObservedAddr),
+189    Ping(Ping),
+190    ImmediateAck(ImmediateAck),
+191    AckFrequency(AckFrequency),
+192    PathChallenge(PathChallenge),
+193    Crypto(Crypto),
+194    PathAbandon(PathAbandon),
+195    PathStatusAvailable(PathStatusAvailable),
+196    PathStatusBackup(PathStatusBackup),
+197    MaxPathId(MaxPathId),
+198    PathsBlocked(PathsBlocked),
+199    PathCidsBlocked(PathCidsBlocked),
+200    ResetStream(ResetStream),
+201    StopSending(StopSending),
+202    NewConnectionId(NewConnectionId),
+203    RetireConnectionId(RetireConnectionId),
+204    Datagram(Datagram),
+205    NewToken(NewToken),
+206    AddAddress(AddAddress),
+207    RemoveAddress(RemoveAddress),
+208    StreamMeta(StreamMetaEncoder),
+209    MaxData(MaxData),
+210    MaxStreamData(MaxStreamData),
+211    MaxStreams(MaxStreams),
+212}
+213
+214impl<'a> Encodable for EncodableFrame<'a> {
+215    fn encode<B: BufMut>(&self, buf: &mut B) {
+216        self.encode_inner(buf)
+217    }
+218}
+219
+220pub(crate) trait FrameStruct {
+221    /// Smallest number of bytes this type of frame is guaranteed to fit within.
+222    const SIZE_BOUND: usize;
+223}
+224
+225/// The type used to refer to [`FrameType`]s in closing and transport errors.
+226#[derive(Copy, Clone, Eq, PartialEq, derive_more::Debug, derive_more::Display)]
+227pub enum MaybeFrame {
+228    /// Not attributed to any particular [`FrameType`].
+229    None,
+230    /// Attributed to some frame type this implementation does not recognize.
+231    #[display("UNKNOWN{:02x}", _0)]
+232    #[debug("Unknown{:02x}", _0)]
+233    Unknown(u64),
+234    /// Attributed to a specific [`FrameType`], never [`FrameType::Padding`].
+235    Known(FrameType),
+236}
+237
+238impl MaybeFrame {
+239    /// Encoded size of this [`MaybeFrame`].
+240    const fn size(&self) -> usize {
+241        match self {
+242            Self::None => VarInt(0).size(),
+243            Self::Unknown(other) => VarInt(*other).size(),
+244            Self::Known(frame_type) => frame_type.size(),
+245        }
+246    }
+247}
 248
-249    fn len(self) -> bool {
-250        self.0 & 0x01 != 0
-251    }
-252
-253    const fn to_u64(self) -> u64 {
-254        self.0 as u64
-255    }
-256}
-257
-258#[derive(Debug)]
-259pub(crate) enum Frame {
-260    Padding,
-261    Ping,
-262    Ack(Ack),
-263    PathAck(PathAck),
-264    ResetStream(ResetStream),
-265    StopSending(StopSending),
-266    Crypto(Crypto),
-267    NewToken(NewToken),
-268    Stream(Stream),
-269    MaxData(VarInt),
-270    MaxStreamData { id: StreamId, offset: u64 },
-271    MaxStreams { dir: Dir, count: u64 },
-272    DataBlocked { offset: u64 },
-273    StreamDataBlocked { id: StreamId, offset: u64 },
-274    StreamsBlocked { dir: Dir, limit: u64 },
-275    NewConnectionId(NewConnectionId),
-276    RetireConnectionId(RetireConnectionId),
-277    PathChallenge(PathChallenge),
-278    PathResponse(PathResponse),
-279    Close(Close),
-280    Datagram(Datagram),
-281    AckFrequency(AckFrequency),
-282    ImmediateAck,
-283    HandshakeDone,
-284    ObservedAddr(ObservedAddr),
-285    PathAbandon(PathAbandon),
-286    PathStatusAvailable(PathStatusAvailable),
-287    PathStatusBackup(PathStatusBackup),
-288    MaxPathId(MaxPathId),
-289    PathsBlocked(PathsBlocked),
-290    PathCidsBlocked(PathCidsBlocked),
-291    AddAddress(AddAddress),
-292    ReachOut(ReachOut),
-293    RemoveAddress(RemoveAddress),
-294}
-295
-296impl fmt::Display for Frame {
-297    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-298        // Eventually all our frames will support fmt::Display and be able to be used to log
-299        // consistently. For now we fall back to fmt::Debug.
-300        match self {
-301            Self::Padding => write!(f, "PADDING"),
-302            Self::Ping => write!(f, "PING"),
-303            Self::PathChallenge(frame) => write!(f, "{frame}"),
-304            Self::PathResponse(frame) => write!(f, "{frame}"),
-305            Self::ImmediateAck => write!(f, "IMMEDIATE_ACK"),
-306            Self::HandshakeDone => write!(f, "HANDSHAKE_DONE"),
-307            _ => write!(f, "{self:?}"),
-308        }
-309    }
-310}
-311
-312impl Frame {
-313    pub(crate) fn ty(&self) -> FrameType {
-314        use Frame::*;
-315        match *self {
-316            Padding => FrameType::Padding,
-317            ResetStream(_) => FrameType::ResetStream,
-318            Close(self::Close::Connection(_)) => FrameType::ConnectionClose,
-319            Close(self::Close::Application(_)) => FrameType::ConnectionClose,
-320            MaxData(_) => FrameType::MaxData,
-321            MaxStreamData { .. } => FrameType::MaxStreamData,
-322            MaxStreams { dir: Dir::Bi, .. } => FrameType::MaxStreamsBidi,
-323            MaxStreams { dir: Dir::Uni, .. } => FrameType::MaxStreamsUni,
-324            Ping => FrameType::Ping,
-325            DataBlocked { .. } => FrameType::DataBlocked,
-326            StreamDataBlocked { .. } => FrameType::StreamDataBlocked,
-327            StreamsBlocked { dir: Dir::Bi, .. } => FrameType::StreamsBlockedBidi,
-328            StreamsBlocked { dir: Dir::Uni, .. } => FrameType::StreamsBlockedUni,
-329            StopSending { .. } => FrameType::StopSending,
-330            RetireConnectionId { .. } => FrameType::RetireConnectionId,
-331            Ack(_) => FrameType::Ack,
-332            PathAck(_) => FrameType::PathAck,
-333            Stream(ref x) => {
-334                let mut ty = *StreamInfo::VALUES.start() as u8;
-335                if x.fin {
-336                    ty |= 0x01;
-337                }
-338                if x.offset != 0 {
-339                    ty |= 0x04;
-340                }
-341                // TODO(@divma): move all this to getframetype for Stream
-342                FrameType::Stream(StreamInfo(ty))
-343            }
-344            PathChallenge(_) => FrameType::PathChallenge,
-345            PathResponse(_) => FrameType::PathResponse,
-346            NewConnectionId(cid) => cid.get_type(),
-347            Crypto(_) => FrameType::Crypto,
-348            NewToken(_) => FrameType::NewToken,
-349            Datagram(_) => FrameType::Datagram(DatagramInfo(*DatagramInfo::VALUES.start() as u8)),
-350            AckFrequency(_) => FrameType::AckFrequency,
-351            ImmediateAck => FrameType::ImmediateAck,
-352            HandshakeDone => FrameType::HandshakeDone,
-353            ObservedAddr(ref observed) => observed.get_type(),
-354            PathAbandon(_) => FrameType::PathAbandon,
-355            PathStatusAvailable(_) => FrameType::PathStatusAvailable,
-356            PathStatusBackup(_) => FrameType::PathStatusBackup,
-357            MaxPathId(_) => FrameType::MaxPathId,
-358            PathsBlocked(_) => FrameType::PathsBlocked,
-359            PathCidsBlocked(_) => FrameType::PathCidsBlocked,
-360            AddAddress(ref frame) => frame.get_type(),
-361            ReachOut(ref frame) => frame.get_type(),
-362            RemoveAddress(_) => self::RemoveAddress::TYPE,
-363        }
-364    }
-365
-366    pub(crate) fn is_ack_eliciting(&self) -> bool {
-367        !matches!(
-368            *self,
-369            Self::Ack(_) | Self::PathAck(_) | Self::Padding | Self::Close(_)
-370        )
-371    }
-372
-373    /// Returns `true` if this frame MUST be sent in 1-RTT space
-374    pub(crate) fn is_1rtt(&self) -> bool {
-375        // See also https://www.ietf.org/archive/id/draft-ietf-quic-multipath-17.html#section-4-1:
-376        // > All frames defined in this document MUST only be sent in 1-RTT packets.
-377        // > If an endpoint receives a multipath-specific frame in a different packet type, it MUST close the
-378        // > connection with an error of type PROTOCOL_VIOLATION.
-379
-380        self.is_multipath_frame() || self.is_qad_frame()
-381    }
-382
-383    fn is_qad_frame(&self) -> bool {
-384        matches!(*self, Self::ObservedAddr(_))
-385    }
-386
-387    fn is_multipath_frame(&self) -> bool {
-388        matches!(
-389            *self,
-390            Self::PathAck(_)
-391                | Self::PathAbandon(_)
-392                | Self::PathStatusBackup(_)
-393                | Self::PathStatusAvailable(_)
-394                | Self::MaxPathId(_)
-395                | Self::PathsBlocked(_)
-396                | Self::PathCidsBlocked(_)
-397                | Self::NewConnectionId(NewConnectionId {
-398                    path_id: Some(_),
-399                    ..
-400                })
-401                | Self::RetireConnectionId(RetireConnectionId {
-402                    path_id: Some(_),
-403                    ..
-404                })
-405        )
-406    }
-407}
-408
-409#[derive(Debug, Clone, Copy, PartialEq, Eq, derive_more::Display)]
-410#[display("PATH_CHALLENGE({_0:08x})")]
-411pub(crate) struct PathChallenge(pub(crate) u64);
-412
-413impl PathChallenge {
-414    pub(crate) const SIZE_BOUND: usize = 9;
-415}
-416impl Decodable for PathChallenge {
-417    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
-418        Ok(Self(buf.get()?))
-419    }
-420}
-421impl Encodable for PathChallenge {
-422    fn encode<B: BufMut>(&self, buf: &mut B) {
-423        buf.write(FrameType::PathChallenge);
-424        buf.write(self.0);
-425    }
-426}
-427
-428#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, derive_more::Display)]
-429#[display("PATH_RESPONSE({_0:08x})")]
-430pub(crate) struct PathResponse(pub(crate) u64);
-431
-432impl PathResponse {
-433    pub(crate) const SIZE_BOUND: usize = 9;
-434}
-435
-436impl Decodable for PathResponse {
-437    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
-438        Ok(Self(buf.get()?))
-439    }
-440}
-441impl Encodable for PathResponse {
-442    fn encode<B: BufMut>(&self, buf: &mut B) {
-443        buf.write(FrameType::PathResponse);
-444        buf.write(self.0);
-445    }
-446}
-447
-448#[derive(Debug, PartialEq, Eq)]
-449pub(crate) struct RetireConnectionId {
-450    pub(crate) path_id: Option<PathId>,
-451    pub(crate) sequence: u64,
-452}
-453
-454impl RetireConnectionId {
-455    /// Maximum size of this frame when the frame type is [`FrameType::RetireConnectionId`]
-456    pub(crate) const SIZE_BOUND: usize = {
-457        let type_len = FrameType::RetireConnectionId.size();
-458        let seq_max_len = 8usize;
-459        type_len + seq_max_len
-460    };
-461
-462    /// Maximum size of this frame when the frame type is [`FrameType::PathRetireConnectionId`]
-463    pub(crate) const SIZE_BOUND_MULTIPATH: usize = {
-464        let type_len = FrameType::PathRetireConnectionId.size();
-465        let path_id_len = VarInt::from_u32(u32::MAX).size();
-466        let seq_max_len = 8usize;
-467        type_len + path_id_len + seq_max_len
-468    };
+249impl Decodable for MaybeFrame {
+250    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+251        match FrameType::try_from(buf.get_var()?) {
+252            Ok(FrameType::Padding) => Ok(Self::None),
+253            Ok(other_frame) => Ok(Self::Known(other_frame)),
+254            Err(InvalidFrameId(other)) => Ok(Self::Unknown(other)),
+255        }
+256    }
+257}
+258
+259impl Encodable for MaybeFrame {
+260    fn encode<B: BufMut>(&self, buf: &mut B) {
+261        match self {
+262            Self::None => buf.write_var(0u64),
+263            Self::Unknown(frame_id) => buf.write_var(*frame_id),
+264            Self::Known(frame_type) => buf.write(*frame_type),
+265        }
+266    }
+267}
+268
+269#[derive(derive_more::Display)]
+270#[display("HANDSHAKE_DONE")]
+271pub(crate) struct HandshakeDone;
+272
+273impl HandshakeDone {
+274    const fn get_type(&self) -> FrameType {
+275        FrameType::HandshakeDone
+276    }
+277}
+278
+279impl Encodable for HandshakeDone {
+280    fn encode<B: BufMut>(&self, buf: &mut B) {
+281        FrameType::HandshakeDone.encode(buf);
+282    }
+283}
+284
+285#[derive(derive_more::Display)]
+286#[display("PING")]
+287pub(crate) struct Ping;
+288
+289impl Ping {
+290    const fn get_type(&self) -> FrameType {
+291        FrameType::Ping
+292    }
+293}
+294
+295impl Encodable for Ping {
+296    fn encode<B: BufMut>(&self, buf: &mut B) {
+297        FrameType::Ping.encode(buf);
+298    }
+299}
+300
+301#[derive(derive_more::Display)]
+302#[display("IMMEDIATE_ACK")]
+303pub(crate) struct ImmediateAck;
+304
+305impl ImmediateAck {
+306    const fn get_type(&self) -> FrameType {
+307        FrameType::ImmediateAck
+308    }
+309}
+310
+311impl Encodable for ImmediateAck {
+312    fn encode<B: BufMut>(&self, buf: &mut B) {
+313        FrameType::ImmediateAck.encode(buf);
+314    }
+315}
+316
+317#[allow(missing_docs)]
+318#[derive(Debug, Copy, Clone, Eq, PartialEq, derive_more::Display)]
+319#[display("STREAM")]
+320pub struct StreamInfo(u8);
+321
+322impl StreamInfo {
+323    const VALUES: RangeInclusive<u64> = RangeInclusive::new(0x08, 0x0f);
+324    fn fin(self) -> bool {
+325        self.0 & 0x01 != 0
+326    }
+327    fn len(self) -> bool {
+328        self.0 & 0x02 != 0
+329    }
+330    fn off(self) -> bool {
+331        self.0 & 0x04 != 0
+332    }
+333
+334    const fn to_u64(self) -> u64 {
+335        self.0 as u64
+336    }
+337}
+338
+339#[allow(missing_docs)]
+340#[derive(Debug, Copy, Clone, Eq, PartialEq, derive_more::Display)]
+341#[display("DATAGRAM")]
+342pub struct DatagramInfo(u8);
+343
+344impl DatagramInfo {
+345    const VALUES: RangeInclusive<u64> = RangeInclusive::new(0x30, 0x31);
+346
+347    fn len(self) -> bool {
+348        self.0 & 0x01 != 0
+349    }
+350
+351    const fn to_u64(self) -> u64 {
+352        self.0 as u64
+353    }
+354}
+355
+356#[derive(Debug)]
+357pub(crate) enum Frame {
+358    Padding,
+359    Ping,
+360    Ack(Ack),
+361    PathAck(PathAck),
+362    ResetStream(ResetStream),
+363    StopSending(StopSending),
+364    Crypto(Crypto),
+365    NewToken(NewToken),
+366    Stream(Stream),
+367    MaxData(MaxData),
+368    MaxStreamData(MaxStreamData),
+369    MaxStreams(MaxStreams),
+370    DataBlocked { offset: u64 },
+371    StreamDataBlocked { id: StreamId, offset: u64 },
+372    StreamsBlocked { dir: Dir, limit: u64 },
+373    NewConnectionId(NewConnectionId),
+374    RetireConnectionId(RetireConnectionId),
+375    PathChallenge(PathChallenge),
+376    PathResponse(PathResponse),
+377    Close(Close),
+378    Datagram(Datagram),
+379    AckFrequency(AckFrequency),
+380    ImmediateAck,
+381    HandshakeDone,
+382    ObservedAddr(ObservedAddr),
+383    PathAbandon(PathAbandon),
+384    PathStatusAvailable(PathStatusAvailable),
+385    PathStatusBackup(PathStatusBackup),
+386    MaxPathId(MaxPathId),
+387    PathsBlocked(PathsBlocked),
+388    PathCidsBlocked(PathCidsBlocked),
+389    AddAddress(AddAddress),
+390    ReachOut(ReachOut),
+391    RemoveAddress(RemoveAddress),
+392}
+393
+394impl fmt::Display for Frame {
+395    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+396        // Eventually all our frames will support fmt::Display and be able to be used to log
+397        // consistently. For now we fall back to fmt::Debug.
+398        match self {
+399            Self::Padding => write!(f, "PADDING"),
+400            Self::Ping => write!(f, "PING"),
+401            Self::PathChallenge(frame) => write!(f, "{frame}"),
+402            Self::PathResponse(frame) => write!(f, "{frame}"),
+403            Self::ImmediateAck => write!(f, "IMMEDIATE_ACK"),
+404            Self::HandshakeDone => write!(f, "HANDSHAKE_DONE"),
+405            _ => write!(f, "{self:?}"),
+406        }
+407    }
+408}
+409
+410impl Frame {
+411    pub(crate) fn ty(&self) -> FrameType {
+412        use Frame::*;
+413        match &self {
+414            Padding => FrameType::Padding,
+415            ResetStream(_) => FrameType::ResetStream,
+416            Close(self::Close::Connection(_)) => FrameType::ConnectionClose,
+417            Close(self::Close::Application(_)) => FrameType::ConnectionClose,
+418            MaxData(_) => FrameType::MaxData,
+419            MaxStreamData(_) => FrameType::MaxStreamData,
+420            MaxStreams(max_streams) => max_streams.get_type(),
+421            Ping => FrameType::Ping,
+422            DataBlocked { .. } => FrameType::DataBlocked,
+423            StreamDataBlocked { .. } => FrameType::StreamDataBlocked,
+424            StreamsBlocked { dir: Dir::Bi, .. } => FrameType::StreamsBlockedBidi,
+425            StreamsBlocked { dir: Dir::Uni, .. } => FrameType::StreamsBlockedUni,
+426            StopSending { .. } => FrameType::StopSending,
+427            RetireConnectionId(retire_frame) => retire_frame.get_type(),
+428            Ack(ack) => ack.get_type(),
+429            PathAck(path_ack) => path_ack.get_type(),
+430            Stream(ref x) => {
+431                let mut ty = *StreamInfo::VALUES.start() as u8;
+432                if x.fin {
+433                    ty |= 0x01;
+434                }
+435                if x.offset != 0 {
+436                    ty |= 0x04;
+437                }
+438                // TODO(@divma): move all this to getframetype for Stream
+439                FrameType::Stream(StreamInfo(ty))
+440            }
+441            PathChallenge(_) => FrameType::PathChallenge,
+442            PathResponse(_) => FrameType::PathResponse,
+443            NewConnectionId(cid) => cid.get_type(),
+444            Crypto(_) => FrameType::Crypto,
+445            NewToken(_) => FrameType::NewToken,
+446            Datagram(_) => FrameType::Datagram(DatagramInfo(*DatagramInfo::VALUES.start() as u8)),
+447            AckFrequency(_) => FrameType::AckFrequency,
+448            ImmediateAck => FrameType::ImmediateAck,
+449            HandshakeDone => FrameType::HandshakeDone,
+450            ObservedAddr(ref observed) => observed.get_type(),
+451            PathAbandon(_) => FrameType::PathAbandon,
+452            PathStatusAvailable(_) => FrameType::PathStatusAvailable,
+453            PathStatusBackup(_) => FrameType::PathStatusBackup,
+454            MaxPathId(_) => FrameType::MaxPathId,
+455            PathsBlocked(_) => FrameType::PathsBlocked,
+456            PathCidsBlocked(_) => FrameType::PathCidsBlocked,
+457            AddAddress(ref frame) => frame.get_type(),
+458            ReachOut(ref frame) => frame.get_type(),
+459            RemoveAddress(_) => self::RemoveAddress::TYPE,
+460        }
+461    }
+462
+463    pub(crate) fn is_ack_eliciting(&self) -> bool {
+464        !matches!(
+465            *self,
+466            Self::Ack(_) | Self::PathAck(_) | Self::Padding | Self::Close(_)
+467        )
+468    }
 469
-470    /// Decode [`Self`] from the buffer, provided that the frame type has been verified (either
-471    /// [`FrameType::PathRetireConnectionId`], or [`FrameType::RetireConnectionId`])
-472    pub(crate) fn decode<R: Buf>(bytes: &mut R, read_path: bool) -> coding::Result<Self> {
-473        Ok(Self {
-474            path_id: if read_path { Some(bytes.get()?) } else { None },
-475            sequence: bytes.get_var()?,
-476        })
-477    }
-478
-479    /// Get the [`FrameType`] for this [`RetireConnectionId`]
-480    pub(crate) fn get_type(&self) -> FrameType {
-481        if self.path_id.is_some() {
-482            FrameType::PathRetireConnectionId
-483        } else {
-484            FrameType::RetireConnectionId
-485        }
-486    }
-487
-488    /// Returns the maximum encoded size on the wire
-489    ///
-490    /// `path_retire_cid` determines whether this frame is a multipath frame. This is a rough upper
-491    /// estimate, does not squeeze every last byte out.
-492    pub(crate) const fn size_bound(path_retire_cid: bool) -> usize {
-493        match path_retire_cid {
-494            true => Self::SIZE_BOUND_MULTIPATH,
-495            false => Self::SIZE_BOUND,
-496        }
-497    }
-498}
-499
-500impl Encodable for RetireConnectionId {
-501    fn encode<W: BufMut>(&self, buf: &mut W) {
-502        buf.write(self.get_type());
-503        if let Some(id) = self.path_id {
-504            buf.write(id);
-505        }
-506        buf.write_var(self.sequence);
-507    }
-508}
+470    /// Returns `true` if this frame MUST be sent in 1-RTT space
+471    pub(crate) fn is_1rtt(&self) -> bool {
+472        // See also https://www.ietf.org/archive/id/draft-ietf-quic-multipath-17.html#section-4-1:
+473        // > All frames defined in this document MUST only be sent in 1-RTT packets.
+474        // > If an endpoint receives a multipath-specific frame in a different packet type, it MUST close the
+475        // > connection with an error of type PROTOCOL_VIOLATION.
+476
+477        self.is_multipath_frame() || self.is_qad_frame()
+478    }
+479
+480    fn is_qad_frame(&self) -> bool {
+481        matches!(*self, Self::ObservedAddr(_))
+482    }
+483
+484    fn is_multipath_frame(&self) -> bool {
+485        matches!(
+486            *self,
+487            Self::PathAck(_)
+488                | Self::PathAbandon(_)
+489                | Self::PathStatusBackup(_)
+490                | Self::PathStatusAvailable(_)
+491                | Self::MaxPathId(_)
+492                | Self::PathsBlocked(_)
+493                | Self::PathCidsBlocked(_)
+494                | Self::NewConnectionId(NewConnectionId {
+495                    path_id: Some(_),
+496                    ..
+497                })
+498                | Self::RetireConnectionId(RetireConnectionId {
+499                    path_id: Some(_),
+500                    ..
+501                })
+502        )
+503    }
+504}
+505
+506#[derive(Debug, Clone, Copy, PartialEq, Eq, derive_more::Display)]
+507#[display("PATH_CHALLENGE({_0:08x})")]
+508pub(crate) struct PathChallenge(pub(crate) u64);
 509
-510#[derive(Clone, Debug)]
-511pub(crate) enum Close {
-512    Connection(ConnectionClose),
-513    Application(ApplicationClose),
-514}
-515
-516impl Close {
-517    pub(crate) fn encoder(&self, max_len: usize) -> CloseEncoder<'_> {
-518        CloseEncoder {
-519            close: self,
-520            max_len,
-521        }
-522    }
+510impl PathChallenge {
+511    pub(crate) const SIZE_BOUND: usize = 9;
+512
+513    const fn get_type(&self) -> FrameType {
+514        FrameType::PathChallenge
+515    }
+516}
+517
+518impl Decodable for PathChallenge {
+519    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+520        Ok(Self(buf.get()?))
+521    }
+522}
 523
-524    pub(crate) fn is_transport_layer(&self) -> bool {
-525        matches!(*self, Self::Connection(_))
-526    }
-527}
-528
-529pub(crate) struct CloseEncoder<'a> {
-530    close: &'a Close,
-531    max_len: usize,
-532}
-533
-534impl<'a> Encodable for CloseEncoder<'a> {
-535    fn encode<W: BufMut>(&self, out: &mut W) {
-536        match self.close {
-537            Close::Connection(x) => x.encode(out, self.max_len),
-538            Close::Application(x) => x.encode(out, self.max_len),
-539        }
+524impl Encodable for PathChallenge {
+525    fn encode<B: BufMut>(&self, buf: &mut B) {
+526        buf.write(FrameType::PathChallenge);
+527        buf.write(self.0);
+528    }
+529}
+530
+531#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, derive_more::Display)]
+532#[display("PATH_RESPONSE({_0:08x})")]
+533pub(crate) struct PathResponse(pub(crate) u64);
+534
+535impl PathResponse {
+536    pub(crate) const SIZE_BOUND: usize = 9;
+537
+538    const fn get_type(&self) -> FrameType {
+539        FrameType::PathResponse
 540    }
 541}
 542
-543impl From<TransportError> for Close {
-544    fn from(x: TransportError) -> Self {
-545        Self::Connection(x.into())
+543impl Decodable for PathResponse {
+544    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+545        Ok(Self(buf.get()?))
 546    }
 547}
-548impl From<ConnectionClose> for Close {
-549    fn from(x: ConnectionClose) -> Self {
-550        Self::Connection(x)
-551    }
-552}
-553impl From<ApplicationClose> for Close {
-554    fn from(x: ApplicationClose) -> Self {
-555        Self::Application(x)
-556    }
-557}
+548impl Encodable for PathResponse {
+549    fn encode<B: BufMut>(&self, buf: &mut B) {
+550        buf.write(FrameType::PathResponse);
+551        buf.write(self.0);
+552    }
+553}
+554
+555#[derive(Debug, Clone, Copy, derive_more::Display)]
+556#[display("MAX_DATA({_0})")]
+557pub(crate) struct MaxData(pub(crate) VarInt);
 558
-559/// Reason given by the transport for closing the connection
-560#[derive(Debug, Clone, PartialEq, Eq)]
-561pub struct ConnectionClose {
-562    /// Class of error as encoded in the specification
-563    pub error_code: TransportErrorCode,
-564    /// Type of frame that caused the close
-565    pub frame_type: MaybeFrame,
-566    /// Human-readable reason for the close
-567    pub reason: Bytes,
-568}
-569
-570impl fmt::Display for ConnectionClose {
-571    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-572        self.error_code.fmt(f)?;
-573        if !self.reason.as_ref().is_empty() {
-574            f.write_str(": ")?;
-575            f.write_str(&String::from_utf8_lossy(&self.reason))?;
-576        }
-577        Ok(())
-578    }
-579}
-580
-581impl From<TransportError> for ConnectionClose {
-582    fn from(x: TransportError) -> Self {
-583        Self {
-584            error_code: x.code,
-585            frame_type: x.frame,
-586            reason: x.reason.into(),
-587        }
-588    }
-589}
-590
-591impl FrameStruct for ConnectionClose {
-592    const SIZE_BOUND: usize = 1 + 8 + 8 + 8;
-593}
-594
-595impl ConnectionClose {
-596    pub(crate) fn encode<W: BufMut>(&self, out: &mut W, max_len: usize) {
-597        out.write(FrameType::ConnectionClose); // 1 byte
-598        out.write(self.error_code); // <= 8 bytes
-599        out.write(self.frame_type); // <= 8 bytes
-600        let max_len = max_len
-601            - 3
-602            - self.frame_type.size()
-603            - VarInt::from_u64(self.reason.len() as u64).unwrap().size();
-604        let actual_len = self.reason.len().min(max_len);
-605        out.write_var(actual_len as u64); // <= 8 bytes
-606        out.put_slice(&self.reason[0..actual_len]); // whatever's left
-607    }
-608}
-609
-610/// Reason given by an application for closing the connection
-611#[derive(Debug, Clone, PartialEq, Eq)]
-612pub struct ApplicationClose {
-613    /// Application-specific reason code
-614    pub error_code: VarInt,
-615    /// Human-readable reason for the close
-616    pub reason: Bytes,
-617}
-618
-619impl fmt::Display for ApplicationClose {
-620    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-621        if !self.reason.as_ref().is_empty() {
-622            f.write_str(&String::from_utf8_lossy(&self.reason))?;
-623            f.write_str(" (code ")?;
-624            self.error_code.fmt(f)?;
-625            f.write_str(")")?;
-626        } else {
-627            self.error_code.fmt(f)?;
-628        }
-629        Ok(())
-630    }
-631}
-632
-633impl FrameStruct for ApplicationClose {
-634    const SIZE_BOUND: usize = 1 + 8 + 8;
+559impl MaxData {
+560    const fn get_type(&self) -> FrameType {
+561        FrameType::MaxData
+562    }
+563}
+564
+565impl Decodable for MaxData {
+566    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+567        Ok(Self(buf.get()?))
+568    }
+569}
+570impl Encodable for MaxData {
+571    fn encode<B: BufMut>(&self, buf: &mut B) {
+572        buf.write(FrameType::MaxData);
+573        buf.write(self.0);
+574    }
+575}
+576
+577#[derive(Debug, Clone, Copy, derive_more::Display)]
+578#[display("MAX_STREAM_DATA id: {id} max: {offset}")]
+579pub(crate) struct MaxStreamData {
+580    pub(crate) id: StreamId,
+581    pub(crate) offset: u64,
+582}
+583
+584impl MaxStreamData {
+585    const fn get_type(&self) -> FrameType {
+586        FrameType::MaxStreamData
+587    }
+588}
+589
+590impl Decodable for MaxStreamData {
+591    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+592        Ok(Self {
+593            id: buf.get()?,
+594            offset: buf.get_var()?,
+595        })
+596    }
+597}
+598
+599impl Encodable for MaxStreamData {
+600    fn encode<B: BufMut>(&self, buf: &mut B) {
+601        buf.write(FrameType::MaxStreamData);
+602        buf.write(self.id);
+603        buf.write_var(self.offset);
+604    }
+605}
+606
+607#[derive(Debug, Clone, Copy, derive_more::Display)]
+608#[display("{} count: {count}", self.get_type())]
+609pub(crate) struct MaxStreams {
+610    pub(crate) dir: Dir,
+611    pub(crate) count: u64,
+612}
+613
+614impl MaxStreams {
+615    const fn get_type(&self) -> FrameType {
+616        match self.dir {
+617            Dir::Bi => FrameType::MaxStreamsBidi,
+618            Dir::Uni => FrameType::MaxStreamsUni,
+619        }
+620    }
+621}
+622
+623impl Encodable for MaxStreams {
+624    fn encode<B: BufMut>(&self, buf: &mut B) {
+625        buf.write(self.get_type());
+626        buf.write_var(self.count);
+627    }
+628}
+629
+630#[derive(Debug, PartialEq, Eq, derive_more::Display)]
+631#[display("{} {} seq: {sequence}", self.get_type(), DisplayOption::new("path_id", path_id.as_ref()))]
+632pub(crate) struct RetireConnectionId {
+633    pub(crate) path_id: Option<PathId>,
+634    pub(crate) sequence: u64,
 635}
 636
-637impl ApplicationClose {
-638    pub(crate) fn encode<W: BufMut>(&self, out: &mut W, max_len: usize) {
-639        out.write(FrameType::ApplicationClose); // 1 byte
-640        out.write(self.error_code); // <= 8 bytes
-641        let max_len = max_len - 3 - VarInt::from_u64(self.reason.len() as u64).unwrap().size();
-642        let actual_len = self.reason.len().min(max_len);
-643        out.write_var(actual_len as u64); // <= 8 bytes
-644        out.put_slice(&self.reason[0..actual_len]); // whatever's left
-645    }
-646}
-647
-648#[derive(Clone, Eq, PartialEq)]
-649pub(crate) struct PathAck {
-650    pub path_id: PathId,
-651    pub largest: u64,
-652    pub delay: u64,
-653    pub additional: Bytes,
-654    pub ecn: Option<EcnCounts>,
-655}
-656
-657impl fmt::Debug for PathAck {
-658    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-659        let mut ranges = "[".to_string();
-660        let mut first = true;
-661        for range in self.into_iter() {
-662            if !first {
-663                ranges.push(',');
-664            }
-665            write!(ranges, "{range:?}")?;
-666            first = false;
-667        }
-668        ranges.push(']');
-669
-670        f.debug_struct("PathAck")
-671            .field("path_id", &self.path_id)
-672            .field("largest", &self.largest)
-673            .field("delay", &self.delay)
-674            .field("ecn", &self.ecn)
-675            .field("ranges", &ranges)
-676            .finish()
-677    }
-678}
-679
-680impl<'a> IntoIterator for &'a PathAck {
-681    type Item = RangeInclusive<u64>;
-682    #[allow(unnameable_types)]
-683    type IntoIter = AckIter<'a>;
-684
-685    fn into_iter(self) -> Self::IntoIter {
-686        AckIter::new(self.largest, &self.additional[..])
-687    }
-688}
-689
-690impl PathAck {
-691    pub(crate) fn into_ack(self) -> (Ack, PathId) {
-692        let ack = Ack {
-693            largest: self.largest,
-694            delay: self.delay,
-695            additional: self.additional,
-696            ecn: self.ecn,
-697        };
+637impl RetireConnectionId {
+638    /// Maximum size of this frame when the frame type is [`FrameType::RetireConnectionId`]
+639    pub(crate) const SIZE_BOUND: usize = {
+640        let type_len = FrameType::RetireConnectionId.size();
+641        let seq_max_len = 8usize;
+642        type_len + seq_max_len
+643    };
+644
+645    /// Maximum size of this frame when the frame type is [`FrameType::PathRetireConnectionId`]
+646    pub(crate) const SIZE_BOUND_MULTIPATH: usize = {
+647        let type_len = FrameType::PathRetireConnectionId.size();
+648        let path_id_len = VarInt::from_u32(u32::MAX).size();
+649        let seq_max_len = 8usize;
+650        type_len + path_id_len + seq_max_len
+651    };
+652
+653    /// Decode [`Self`] from the buffer, provided that the frame type has been verified (either
+654    /// [`FrameType::PathRetireConnectionId`], or [`FrameType::RetireConnectionId`])
+655    pub(crate) fn decode<R: Buf>(bytes: &mut R, read_path: bool) -> coding::Result<Self> {
+656        Ok(Self {
+657            path_id: if read_path { Some(bytes.get()?) } else { None },
+658            sequence: bytes.get_var()?,
+659        })
+660    }
+661
+662    /// Get the [`FrameType`] for this [`RetireConnectionId`]
+663    const fn get_type(&self) -> FrameType {
+664        if self.path_id.is_some() {
+665            FrameType::PathRetireConnectionId
+666        } else {
+667            FrameType::RetireConnectionId
+668        }
+669    }
+670
+671    /// Returns the maximum encoded size on the wire
+672    ///
+673    /// `path_retire_cid` determines whether this frame is a multipath frame. This is a rough upper
+674    /// estimate, does not squeeze every last byte out.
+675    pub(crate) const fn size_bound(path_retire_cid: bool) -> usize {
+676        match path_retire_cid {
+677            true => Self::SIZE_BOUND_MULTIPATH,
+678            false => Self::SIZE_BOUND,
+679        }
+680    }
+681}
+682
+683impl Encodable for RetireConnectionId {
+684    fn encode<W: BufMut>(&self, buf: &mut W) {
+685        buf.write(self.get_type());
+686        if let Some(id) = self.path_id {
+687            buf.write(id);
+688        }
+689        buf.write_var(self.sequence);
+690    }
+691}
+692
+693#[derive(Clone, Debug, derive_more::Display)]
+694pub(crate) enum Close {
+695    Connection(ConnectionClose),
+696    Application(ApplicationClose),
+697}
 698
-699        (ack, self.path_id)
-700    }
-701
-702    pub(crate) fn encoder<'a>(
-703        path_id: PathId,
-704        delay: u64,
-705        ranges: &'a ArrayRangeSet,
-706        ecn: Option<&'a EcnCounts>,
-707    ) -> PathAckEncoder<'a> {
-708        PathAckEncoder {
-709            path_id,
-710            delay,
-711            ranges,
-712            ecn,
-713        }
-714    }
-715}
-716
-717pub(crate) struct PathAckEncoder<'a> {
-718    path_id: PathId,
-719    delay: u64,
-720    ranges: &'a ArrayRangeSet,
-721    ecn: Option<&'a EcnCounts>,
-722}
-723
-724impl<'a> Encodable for PathAckEncoder<'a> {
-725    /// Encode [`Self`] into the given buffer
-726    ///
-727    /// The [`FrameType`] will be either [`FrameType::PathAckEcn`] or [`FrameType::PathAck`]
-728    /// depending on whether [`EcnCounts`] are provided.
-729    ///
-730    /// PANICS: if `ranges` is empty.
-731    fn encode<W: BufMut>(&self, buf: &mut W) {
-732        let PathAckEncoder {
-733            path_id,
-734            delay,
-735            ranges,
-736            ecn,
-737        } = self;
-738        let mut rest = ranges.iter().rev();
-739        let first = rest
-740            .next()
-741            .expect("Caller has verified ranges is non empty");
-742        let largest = first.end - 1;
-743        let first_size = first.end - first.start;
-744        let kind = match ecn.is_some() {
-745            true => FrameType::PathAckEcn,
-746            false => FrameType::PathAck,
-747        };
-748        buf.write(kind);
-749        buf.write(*path_id);
-750        buf.write_var(largest);
-751        buf.write_var(*delay);
-752        buf.write_var(ranges.len() as u64 - 1);
-753        buf.write_var(first_size - 1);
-754        let mut prev = first.start;
-755        for block in rest {
-756            let size = block.end - block.start;
-757            buf.write_var(prev - block.end - 1);
-758            buf.write_var(size - 1);
-759            prev = block.start;
-760        }
-761        if let Some(x) = ecn {
-762            x.encode(buf)
-763        }
-764    }
-765}
-766
-767#[derive(Clone, Eq, PartialEq)]
-768pub(crate) struct Ack {
-769    pub largest: u64,
-770    pub delay: u64,
-771    pub additional: Bytes,
-772    pub ecn: Option<EcnCounts>,
+699impl Close {
+700    pub(crate) fn encoder(&self, max_len: usize) -> CloseEncoder<'_> {
+701        CloseEncoder {
+702            close: self,
+703            max_len,
+704        }
+705    }
+706
+707    pub(crate) fn is_transport_layer(&self) -> bool {
+708        matches!(*self, Self::Connection(_))
+709    }
+710}
+711
+712#[derive(derive_more::Display)]
+713#[display("{close}")]
+714pub(crate) struct CloseEncoder<'a> {
+715    pub(crate) close: &'a Close,
+716    max_len: usize,
+717}
+718
+719impl<'a> CloseEncoder<'a> {
+720    const fn get_type(&self) -> FrameType {
+721        match self.close {
+722            Close::Connection(_) => FrameType::ConnectionClose,
+723            Close::Application(_) => FrameType::ApplicationClose,
+724        }
+725    }
+726}
+727
+728impl<'a> Encodable for CloseEncoder<'a> {
+729    fn encode<W: BufMut>(&self, out: &mut W) {
+730        match self.close {
+731            Close::Connection(x) => x.encode(out, self.max_len),
+732            Close::Application(x) => x.encode(out, self.max_len),
+733        }
+734    }
+735}
+736
+737impl From<TransportError> for Close {
+738    fn from(x: TransportError) -> Self {
+739        Self::Connection(x.into())
+740    }
+741}
+742impl From<ConnectionClose> for Close {
+743    fn from(x: ConnectionClose) -> Self {
+744        Self::Connection(x)
+745    }
+746}
+747impl From<ApplicationClose> for Close {
+748    fn from(x: ApplicationClose) -> Self {
+749        Self::Application(x)
+750    }
+751}
+752
+753/// Reason given by the transport for closing the connection
+754#[derive(Debug, Clone, PartialEq, Eq)]
+755pub struct ConnectionClose {
+756    /// Class of error as encoded in the specification
+757    pub error_code: TransportErrorCode,
+758    /// Type of frame that caused the close
+759    pub frame_type: MaybeFrame,
+760    /// Human-readable reason for the close
+761    pub reason: Bytes,
+762}
+763
+764impl fmt::Display for ConnectionClose {
+765    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+766        self.error_code.fmt(f)?;
+767        if !self.reason.as_ref().is_empty() {
+768            f.write_str(": ")?;
+769            f.write_str(&String::from_utf8_lossy(&self.reason))?;
+770        }
+771        Ok(())
+772    }
 773}
 774
-775impl fmt::Debug for Ack {
-776    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-777        let mut ranges = "[".to_string();
-778        let mut first = true;
-779        for range in self.iter() {
-780            if !first {
-781                ranges.push(',');
-782            }
-783            write!(ranges, "{range:?}").unwrap();
-784            first = false;
-785        }
-786        ranges.push(']');
-787
-788        f.debug_struct("Ack")
-789            .field("largest", &self.largest)
-790            .field("delay", &self.delay)
-791            .field("ecn", &self.ecn)
-792            .field("ranges", &ranges)
-793            .finish()
-794    }
-795}
-796
-797#[allow(unnameable_types)]
-798impl<'a> IntoIterator for &'a Ack {
-799    type Item = RangeInclusive<u64>;
-800    type IntoIter = AckIter<'a>;
-801
-802    fn into_iter(self) -> AckIter<'a> {
-803        AckIter::new(self.largest, &self.additional[..])
-804    }
-805}
-806
-807impl Ack {
-808    pub(crate) fn encoder<'a>(
-809        delay: u64,
-810        ranges: &'a ArrayRangeSet,
-811        ecn: Option<&'a EcnCounts>,
-812    ) -> AckEncoder<'a> {
-813        AckEncoder { delay, ranges, ecn }
-814    }
-815
-816    pub(crate) fn iter(&self) -> AckIter<'_> {
-817        self.into_iter()
-818    }
-819}
-820
-821pub(crate) struct AckEncoder<'a> {
-822    delay: u64,
-823    ranges: &'a ArrayRangeSet,
-824    ecn: Option<&'a EcnCounts>,
+775impl From<TransportError> for ConnectionClose {
+776    fn from(x: TransportError) -> Self {
+777        Self {
+778            error_code: x.code,
+779            frame_type: x.frame,
+780            reason: x.reason.into(),
+781        }
+782    }
+783}
+784
+785impl FrameStruct for ConnectionClose {
+786    const SIZE_BOUND: usize = 1 + 8 + 8 + 8;
+787}
+788
+789impl ConnectionClose {
+790    pub(crate) fn encode<W: BufMut>(&self, out: &mut W, max_len: usize) {
+791        out.write(FrameType::ConnectionClose); // 1 byte
+792        out.write(self.error_code); // <= 8 bytes
+793        out.write(self.frame_type); // <= 8 bytes
+794        let max_len = max_len
+795            - 3
+796            - self.frame_type.size()
+797            - VarInt::from_u64(self.reason.len() as u64).unwrap().size();
+798        let actual_len = self.reason.len().min(max_len);
+799        out.write_var(actual_len as u64); // <= 8 bytes
+800        out.put_slice(&self.reason[0..actual_len]); // whatever's left
+801    }
+802}
+803
+804/// Reason given by an application for closing the connection
+805#[derive(Debug, Clone, PartialEq, Eq)]
+806pub struct ApplicationClose {
+807    /// Application-specific reason code
+808    pub error_code: VarInt,
+809    /// Human-readable reason for the close
+810    pub reason: Bytes,
+811}
+812
+813impl fmt::Display for ApplicationClose {
+814    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+815        if !self.reason.as_ref().is_empty() {
+816            f.write_str(&String::from_utf8_lossy(&self.reason))?;
+817            f.write_str(" (code ")?;
+818            self.error_code.fmt(f)?;
+819            f.write_str(")")?;
+820        } else {
+821            self.error_code.fmt(f)?;
+822        }
+823        Ok(())
+824    }
 825}
 826
-827impl<'a> Encodable for AckEncoder<'a> {
-828    fn encode<W: BufMut>(&self, buf: &mut W) {
-829        let AckEncoder { delay, ranges, ecn } = self;
-830        let mut rest = ranges.iter().rev();
-831        let first = rest.next().unwrap();
-832        let largest = first.end - 1;
-833        let first_size = first.end - first.start;
-834        let kind = match ecn.is_some() {
-835            true => FrameType::AckEcn,
-836            false => FrameType::Ack,
-837        };
-838        buf.write(kind);
-839        buf.write_var(largest);
-840        buf.write_var(*delay);
-841        buf.write_var(ranges.len() as u64 - 1);
-842        buf.write_var(first_size - 1);
-843        let mut prev = first.start;
-844        for block in rest {
-845            let size = block.end - block.start;
-846            buf.write_var(prev - block.end - 1);
-847            buf.write_var(size - 1);
-848            prev = block.start;
-849        }
-850        if let Some(x) = ecn {
-851            x.encode(buf)
-852        }
-853    }
-854}
-855
-856#[derive(Debug, Copy, Clone, Eq, PartialEq)]
-857pub(crate) struct EcnCounts {
-858    pub ect0: u64,
-859    pub ect1: u64,
-860    pub ce: u64,
-861}
-862
-863impl std::ops::AddAssign<EcnCodepoint> for EcnCounts {
-864    fn add_assign(&mut self, rhs: EcnCodepoint) {
-865        match rhs {
-866            EcnCodepoint::Ect0 => {
-867                self.ect0 += 1;
-868            }
-869            EcnCodepoint::Ect1 => {
-870                self.ect1 += 1;
-871            }
-872            EcnCodepoint::Ce => {
-873                self.ce += 1;
-874            }
-875        }
-876    }
-877}
+827impl FrameStruct for ApplicationClose {
+828    const SIZE_BOUND: usize = 1 + 8 + 8;
+829}
+830
+831impl ApplicationClose {
+832    pub(crate) fn encode<W: BufMut>(&self, out: &mut W, max_len: usize) {
+833        out.write(FrameType::ApplicationClose); // 1 byte
+834        out.write(self.error_code); // <= 8 bytes
+835        let max_len = max_len - 3 - VarInt::from_u64(self.reason.len() as u64).unwrap().size();
+836        let actual_len = self.reason.len().min(max_len);
+837        out.write_var(actual_len as u64); // <= 8 bytes
+838        out.put_slice(&self.reason[0..actual_len]); // whatever's left
+839    }
+840}
+841
+842#[derive(Clone, Eq, PartialEq)]
+843pub(crate) struct PathAck {
+844    pub path_id: PathId,
+845    pub largest: u64,
+846    pub delay: u64,
+847    pub additional: Bytes,
+848    pub ecn: Option<EcnCounts>,
+849}
+850
+851impl fmt::Debug for PathAck {
+852    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+853        let mut ranges = "[".to_string();
+854        let mut first = true;
+855        for range in self.into_iter() {
+856            if !first {
+857                ranges.push(',');
+858            }
+859            write!(ranges, "{range:?}")?;
+860            first = false;
+861        }
+862        ranges.push(']');
+863
+864        f.debug_struct("PathAck")
+865            .field("path_id", &self.path_id)
+866            .field("largest", &self.largest)
+867            .field("delay", &self.delay)
+868            .field("ecn", &self.ecn)
+869            .field("ranges", &ranges)
+870            .finish()
+871    }
+872}
+873
+874impl<'a> IntoIterator for &'a PathAck {
+875    type Item = RangeInclusive<u64>;
+876    #[allow(unnameable_types)]
+877    type IntoIter = AckIter<'a>;
 878
-879impl EcnCounts {
-880    pub(crate) const ZERO: Self = Self {
-881        ect0: 0,
-882        ect1: 0,
-883        ce: 0,
-884    };
-885}
-886
-887impl Encodable for EcnCounts {
-888    fn encode<W: BufMut>(&self, out: &mut W) {
-889        out.write_var(self.ect0);
-890        out.write_var(self.ect1);
-891        out.write_var(self.ce);
-892    }
-893}
-894
-895#[derive(Debug, Clone)]
-896pub(crate) struct Stream {
-897    pub(crate) id: StreamId,
-898    pub(crate) offset: u64,
-899    pub(crate) fin: bool,
-900    pub(crate) data: Bytes,
-901}
-902
-903impl FrameStruct for Stream {
-904    const SIZE_BOUND: usize = 1 + 8 + 8 + 8;
-905}
-906
-907/// Metadata from a stream frame
-908#[derive(Debug, Clone)]
-909pub(crate) struct StreamMeta {
-910    pub(crate) id: StreamId,
-911    pub(crate) offsets: Range<u64>,
-912    pub(crate) fin: bool,
-913}
-914
-915// This manual implementation exists because `Default` is not implemented for `StreamId`
-916impl Default for StreamMeta {
-917    fn default() -> Self {
-918        Self {
-919            id: StreamId(0),
-920            offsets: 0..0,
-921            fin: false,
-922        }
-923    }
-924}
-925
-926impl StreamMeta {
-927    pub(crate) fn encoder(&self, encode_length: bool) -> StreamMetaEncoder<'_> {
-928        StreamMetaEncoder {
-929            meta: self,
-930            encode_length,
-931        }
-932    }
-933}
-934
-935pub(crate) struct StreamMetaEncoder<'a> {
-936    meta: &'a StreamMeta,
-937    encode_length: bool,
-938}
-939
-940impl<'a> Encodable for StreamMetaEncoder<'a> {
-941    fn encode<W: BufMut>(&self, out: &mut W) {
-942        let StreamMetaEncoder {
-943            meta,
-944            encode_length: length,
-945        } = self;
-946        let mut ty = *StreamInfo::VALUES.start();
-947        if meta.offsets.start != 0 {
-948            ty |= 0x04;
-949        }
-950        if *length {
-951            ty |= 0x02;
-952        }
-953        if meta.fin {
-954            ty |= 0x01;
-955        }
-956        out.write_var(ty); // 1 byte
-957        out.write(meta.id); // <=8 bytes
-958        if meta.offsets.start != 0 {
-959            out.write_var(meta.offsets.start); // <=8 bytes
-960        }
-961        if *length {
-962            out.write_var(meta.offsets.end - meta.offsets.start); // <=8 bytes
-963        }
-964    }
-965}
-966
-967/// A vector of [`StreamMeta`] with optimization for the single element case
-968pub(crate) type StreamMetaVec = TinyVec<[StreamMeta; 1]>;
-969
-970#[derive(Debug, Clone)]
-971pub(crate) struct Crypto {
-972    pub(crate) offset: u64,
-973    pub(crate) data: Bytes,
-974}
-975
-976impl Crypto {
-977    pub(crate) const SIZE_BOUND: usize = 17;
+879    fn into_iter(self) -> Self::IntoIter {
+880        AckIter::new(self.largest, &self.additional[..])
+881    }
+882}
+883
+884impl PathAck {
+885    pub(crate) fn into_ack(self) -> (Ack, PathId) {
+886        let ack = Ack {
+887            largest: self.largest,
+888            delay: self.delay,
+889            additional: self.additional,
+890            ecn: self.ecn,
+891        };
+892
+893        (ack, self.path_id)
+894    }
+895
+896    fn get_type(&self) -> FrameType {
+897        if self.ecn.is_some() {
+898            FrameType::PathAckEcn
+899        } else {
+900            FrameType::PathAck
+901        }
+902    }
+903
+904    pub(crate) fn encoder<'a>(
+905        path_id: PathId,
+906        delay: u64,
+907        ranges: &'a ArrayRangeSet,
+908        ecn: Option<&'a EcnCounts>,
+909    ) -> PathAckEncoder<'a> {
+910        PathAckEncoder {
+911            path_id,
+912            delay,
+913            ranges,
+914            ecn,
+915        }
+916    }
+917}
+918
+919#[derive(derive_more::Display)]
+920#[display("{} path_id: {path_id} ranges: {ranges:?} delay: {delay}µs", self.get_type())]
+921pub(crate) struct PathAckEncoder<'a> {
+922    pub(super) path_id: PathId,
+923    pub(super) delay: u64,
+924    pub(super) ranges: &'a ArrayRangeSet,
+925    pub(super) ecn: Option<&'a EcnCounts>,
+926}
+927
+928impl<'a> PathAckEncoder<'a> {
+929    const fn get_type(&self) -> FrameType {
+930        match self.ecn.is_some() {
+931            true => FrameType::PathAckEcn,
+932            false => FrameType::PathAck,
+933        }
+934    }
+935}
+936
+937impl<'a> Encodable for PathAckEncoder<'a> {
+938    /// Encode [`Self`] into the given buffer
+939    ///
+940    /// The [`FrameType`] will be either [`FrameType::PathAckEcn`] or [`FrameType::PathAck`]
+941    /// depending on whether [`EcnCounts`] are provided.
+942    ///
+943    /// PANICS: if `ranges` is empty.
+944    fn encode<W: BufMut>(&self, buf: &mut W) {
+945        let PathAckEncoder {
+946            path_id,
+947            delay,
+948            ranges,
+949            ecn,
+950        } = self;
+951        let mut rest = ranges.iter().rev();
+952        let first = rest
+953            .next()
+954            .expect("Caller has verified ranges is non empty");
+955        let largest = first.end - 1;
+956        let first_size = first.end - first.start;
+957        let kind = match ecn.is_some() {
+958            true => FrameType::PathAckEcn,
+959            false => FrameType::PathAck,
+960        };
+961        buf.write(kind);
+962        buf.write(*path_id);
+963        buf.write_var(largest);
+964        buf.write_var(*delay);
+965        buf.write_var(ranges.len() as u64 - 1);
+966        buf.write_var(first_size - 1);
+967        let mut prev = first.start;
+968        for block in rest {
+969            let size = block.end - block.start;
+970            buf.write_var(prev - block.end - 1);
+971            buf.write_var(size - 1);
+972            prev = block.start;
+973        }
+974        if let Some(x) = ecn {
+975            x.encode(buf)
+976        }
+977    }
 978}
 979
-980impl Encodable for Crypto {
-981    fn encode<W: BufMut>(&self, out: &mut W) {
-982        out.write(FrameType::Crypto);
-983        out.write_var(self.offset);
-984        out.write_var(self.data.len() as u64);
-985        out.put_slice(&self.data);
-986    }
-987}
-988
-989#[derive(Debug, Clone)]
-990pub(crate) struct NewToken {
-991    pub(crate) token: Bytes,
-992}
-993
-994impl Encodable for NewToken {
-995    fn encode<W: BufMut>(&self, out: &mut W) {
-996        out.write(FrameType::NewToken);
-997        out.write_var(self.token.len() as u64);
-998        out.put_slice(&self.token);
-999    }
-1000}
-1001
-1002impl NewToken {
-1003    pub(crate) fn size(&self) -> usize {
-1004        1 + VarInt::from_u64(self.token.len() as u64).unwrap().size() + self.token.len()
-1005    }
-1006}
-1007
-1008#[derive(Debug, Clone)]
-1009pub(crate) struct MaxPathId(pub(crate) PathId);
-1010
-1011impl MaxPathId {
-1012    pub(crate) const SIZE_BOUND: usize =
-1013        FrameType::MaxPathId.size() + VarInt(u32::MAX as u64).size();
-1014}
-1015
-1016impl Decodable for MaxPathId {
-1017    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
-1018        Ok(Self(buf.get()?))
-1019    }
-1020}
-1021
-1022impl Encodable for MaxPathId {
-1023    fn encode<B: BufMut>(&self, buf: &mut B) {
-1024        buf.write(FrameType::MaxPathId);
-1025        buf.write(self.0);
-1026    }
-1027}
+980#[derive(Clone, Eq, PartialEq)]
+981pub(crate) struct Ack {
+982    pub largest: u64,
+983    pub delay: u64,
+984    pub additional: Bytes,
+985    pub ecn: Option<EcnCounts>,
+986}
+987
+988impl fmt::Debug for Ack {
+989    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+990        let mut ranges = "[".to_string();
+991        let mut first = true;
+992        for range in self.iter() {
+993            if !first {
+994                ranges.push(',');
+995            }
+996            write!(ranges, "{range:?}").unwrap();
+997            first = false;
+998        }
+999        ranges.push(']');
+1000
+1001        f.debug_struct("Ack")
+1002            .field("largest", &self.largest)
+1003            .field("delay", &self.delay)
+1004            .field("ecn", &self.ecn)
+1005            .field("ranges", &ranges)
+1006            .finish()
+1007    }
+1008}
+1009
+1010#[allow(unnameable_types)]
+1011impl<'a> IntoIterator for &'a Ack {
+1012    type Item = RangeInclusive<u64>;
+1013    type IntoIter = AckIter<'a>;
+1014
+1015    fn into_iter(self) -> AckIter<'a> {
+1016        AckIter::new(self.largest, &self.additional[..])
+1017    }
+1018}
+1019
+1020impl Ack {
+1021    pub(crate) fn encoder<'a>(
+1022        delay: u64,
+1023        ranges: &'a ArrayRangeSet,
+1024        ecn: Option<&'a EcnCounts>,
+1025    ) -> AckEncoder<'a> {
+1026        AckEncoder { delay, ranges, ecn }
+1027    }
 1028
-1029#[derive(Debug, Clone, PartialEq, Eq)]
-1030pub(crate) struct PathsBlocked(pub(crate) PathId);
-1031
-1032impl PathsBlocked {
-1033    pub(crate) const SIZE_BOUND: usize =
-1034        FrameType::PathsBlocked.size() + VarInt(u32::MAX as u64).size();
-1035}
-1036
-1037impl Encodable for PathsBlocked {
-1038    fn encode<B: BufMut>(&self, buf: &mut B) {
-1039        buf.write(FrameType::PathsBlocked);
-1040        buf.write(self.0);
-1041    }
-1042}
-1043
-1044impl Decodable for PathsBlocked {
-1045    /// Decode [`Self`] from the buffer, provided that the frame type has been verified
-1046    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
-1047        Ok(Self(buf.get()?))
-1048    }
-1049}
-1050
-1051#[derive(Debug, Clone, PartialEq, Eq)]
-1052pub(crate) struct PathCidsBlocked {
-1053    pub(crate) path_id: PathId,
-1054    pub(crate) next_seq: VarInt,
-1055}
-1056
-1057impl PathCidsBlocked {
-1058    pub(crate) const SIZE_BOUND: usize =
-1059        FrameType::PathCidsBlocked.size() + VarInt(u32::MAX as u64).size() + VarInt::MAX.size();
-1060}
-1061
-1062impl Decodable for PathCidsBlocked {
-1063    fn decode<R: Buf>(buf: &mut R) -> coding::Result<Self> {
-1064        Ok(Self {
-1065            path_id: buf.get()?,
-1066            next_seq: buf.get()?,
-1067        })
-1068    }
-1069}
-1070
-1071impl Encodable for PathCidsBlocked {
-1072    fn encode<W: BufMut>(&self, buf: &mut W) {
-1073        buf.write(FrameType::PathCidsBlocked);
-1074        buf.write(self.path_id);
-1075        buf.write(self.next_seq);
-1076    }
-1077}
-1078
-1079pub(crate) struct Iter {
-1080    bytes: Bytes,
-1081    last_ty: MaybeFrame,
-1082}
-1083
-1084impl Iter {
-1085    pub(crate) fn new(payload: Bytes) -> Result<Self, TransportError> {
-1086        if payload.is_empty() {
-1087            // "An endpoint MUST treat receipt of a packet containing no frames as a
-1088            // connection error of type PROTOCOL_VIOLATION."
-1089            // https://www.rfc-editor.org/rfc/rfc9000.html#name-frames-and-frame-types
-1090            return Err(TransportError::PROTOCOL_VIOLATION(
-1091                "packet payload is empty",
-1092            ));
-1093        }
+1029    pub(crate) fn iter(&self) -> AckIter<'_> {
+1030        self.into_iter()
+1031    }
+1032
+1033    pub(crate) const fn get_type(&self) -> FrameType {
+1034        if self.ecn.is_some() {
+1035            FrameType::AckEcn
+1036        } else {
+1037            FrameType::Ack
+1038        }
+1039    }
+1040}
+1041
+1042#[derive(derive_more::Display)]
+1043#[display("{} ranges: {ranges:?} delay: {delay}µs", self.get_type())]
+1044pub(crate) struct AckEncoder<'a> {
+1045    pub(crate) delay: u64,
+1046    pub(crate) ranges: &'a ArrayRangeSet,
+1047    pub(crate) ecn: Option<&'a EcnCounts>,
+1048}
+1049
+1050impl<'a> AckEncoder<'a> {
+1051    const fn get_type(&self) -> FrameType {
+1052        match self.ecn.is_some() {
+1053            true => FrameType::AckEcn,
+1054            false => FrameType::Ack,
+1055        }
+1056    }
+1057}
+1058
+1059impl<'a> Encodable for AckEncoder<'a> {
+1060    fn encode<W: BufMut>(&self, buf: &mut W) {
+1061        let AckEncoder { delay, ranges, ecn } = self;
+1062        let mut rest = ranges.iter().rev();
+1063        let first = rest.next().unwrap();
+1064        let largest = first.end - 1;
+1065        let first_size = first.end - first.start;
+1066        let kind = match ecn.is_some() {
+1067            true => FrameType::AckEcn,
+1068            false => FrameType::Ack,
+1069        };
+1070        buf.write(kind);
+1071        buf.write_var(largest);
+1072        buf.write_var(*delay);
+1073        buf.write_var(ranges.len() as u64 - 1);
+1074        buf.write_var(first_size - 1);
+1075        let mut prev = first.start;
+1076        for block in rest {
+1077            let size = block.end - block.start;
+1078            buf.write_var(prev - block.end - 1);
+1079            buf.write_var(size - 1);
+1080            prev = block.start;
+1081        }
+1082        if let Some(x) = ecn {
+1083            x.encode(buf)
+1084        }
+1085    }
+1086}
+1087
+1088#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+1089pub(crate) struct EcnCounts {
+1090    pub ect0: u64,
+1091    pub ect1: u64,
+1092    pub ce: u64,
+1093}
 1094
-1095        Ok(Self {
-1096            bytes: payload,
-1097            last_ty: MaybeFrame::None,
-1098        })
-1099    }
-1100
-1101    fn take_len(&mut self) -> Result<Bytes, UnexpectedEnd> {
-1102        let len = self.bytes.get_var()?;
-1103        if len > self.bytes.remaining() as u64 {
-1104            return Err(UnexpectedEnd);
-1105        }
-1106        Ok(self.bytes.split_to(len as usize))
-1107    }
-1108
-1109    #[track_caller]
-1110    fn try_next(&mut self) -> Result<Frame, IterErr> {
-1111        self.last_ty = self.bytes.get()?;
-1112
-1113        let ty = match self.last_ty {
-1114            MaybeFrame::None => FrameType::Padding,
-1115            MaybeFrame::Unknown(_other) => return Err(IterErr::InvalidFrameId),
-1116            MaybeFrame::Known(frame_type) => frame_type,
-1117        };
-1118        Ok(match ty {
-1119            FrameType::Padding => Frame::Padding,
-1120            FrameType::ResetStream => Frame::ResetStream(ResetStream {
-1121                id: self.bytes.get()?,
-1122                error_code: self.bytes.get()?,
-1123                final_offset: self.bytes.get()?,
-1124            }),
-1125            FrameType::ConnectionClose => Frame::Close(Close::Connection(ConnectionClose {
-1126                error_code: self.bytes.get()?,
-1127                frame_type: self.bytes.get()?,
-1128                reason: self.take_len()?,
-1129            })),
-1130            FrameType::ApplicationClose => Frame::Close(Close::Application(ApplicationClose {
-1131                error_code: self.bytes.get()?,
-1132                reason: self.take_len()?,
-1133            })),
-1134            FrameType::MaxData => Frame::MaxData(self.bytes.get()?),
-1135            FrameType::MaxStreamData => Frame::MaxStreamData {
-1136                id: self.bytes.get()?,
-1137                offset: self.bytes.get_var()?,
-1138            },
-1139            FrameType::MaxStreamsBidi => Frame::MaxStreams {
-1140                dir: Dir::Bi,
-1141                count: self.bytes.get_var()?,
-1142            },
-1143            FrameType::MaxStreamsUni => Frame::MaxStreams {
-1144                dir: Dir::Uni,
-1145                count: self.bytes.get_var()?,
-1146            },
-1147            FrameType::Ping => Frame::Ping,
-1148            FrameType::DataBlocked => Frame::DataBlocked {
-1149                offset: self.bytes.get_var()?,
-1150            },
-1151            FrameType::StreamDataBlocked => Frame::StreamDataBlocked {
-1152                id: self.bytes.get()?,
-1153                offset: self.bytes.get_var()?,
-1154            },
-1155            FrameType::StreamsBlockedBidi => Frame::StreamsBlocked {
-1156                dir: Dir::Bi,
-1157                limit: self.bytes.get_var()?,
-1158            },
-1159            FrameType::StreamsBlockedUni => Frame::StreamsBlocked {
-1160                dir: Dir::Uni,
-1161                limit: self.bytes.get_var()?,
-1162            },
-1163            FrameType::StopSending => Frame::StopSending(StopSending {
-1164                id: self.bytes.get()?,
-1165                error_code: self.bytes.get()?,
-1166            }),
-1167            FrameType::RetireConnectionId | FrameType::PathRetireConnectionId => {
-1168                Frame::RetireConnectionId(RetireConnectionId::decode(
-1169                    &mut self.bytes,
-1170                    ty == FrameType::PathRetireConnectionId,
-1171                )?)
-1172            }
-1173            FrameType::Ack | FrameType::AckEcn => {
-1174                let largest = self.bytes.get_var()?;
-1175                let delay = self.bytes.get_var()?;
-1176                let extra_blocks = self.bytes.get_var()? as usize;
-1177                let n = scan_ack_blocks(&self.bytes, largest, extra_blocks)?;
-1178                Frame::Ack(Ack {
-1179                    delay,
-1180                    largest,
-1181                    additional: self.bytes.split_to(n),
-1182                    ecn: if ty != FrameType::AckEcn && ty != FrameType::PathAckEcn {
-1183                        None
-1184                    } else {
-1185                        Some(EcnCounts {
-1186                            ect0: self.bytes.get_var()?,
-1187                            ect1: self.bytes.get_var()?,
-1188                            ce: self.bytes.get_var()?,
-1189                        })
-1190                    },
-1191                })
-1192            }
-1193            FrameType::PathAck | FrameType::PathAckEcn => {
-1194                let path_id = self.bytes.get()?;
-1195                let largest = self.bytes.get_var()?;
-1196                let delay = self.bytes.get_var()?;
-1197                let extra_blocks = self.bytes.get_var()? as usize;
-1198                let n = scan_ack_blocks(&self.bytes, largest, extra_blocks)?;
-1199                Frame::PathAck(PathAck {
-1200                    path_id,
-1201                    delay,
-1202                    largest,
-1203                    additional: self.bytes.split_to(n),
-1204                    ecn: if ty != FrameType::AckEcn && ty != FrameType::PathAckEcn {
-1205                        None
-1206                    } else {
-1207                        Some(EcnCounts {
-1208                            ect0: self.bytes.get_var()?,
-1209                            ect1: self.bytes.get_var()?,
-1210                            ce: self.bytes.get_var()?,
-1211                        })
-1212                    },
-1213                })
-1214            }
-1215            FrameType::PathChallenge => Frame::PathChallenge(self.bytes.get()?),
-1216            FrameType::PathResponse => Frame::PathResponse(self.bytes.get()?),
-1217            FrameType::NewConnectionId | FrameType::PathNewConnectionId => {
-1218                let read_path = ty == FrameType::PathNewConnectionId;
-1219                Frame::NewConnectionId(NewConnectionId::read(&mut self.bytes, read_path)?)
-1220            }
-1221            FrameType::Crypto => Frame::Crypto(Crypto {
-1222                offset: self.bytes.get_var()?,
-1223                data: self.take_len()?,
-1224            }),
-1225            FrameType::NewToken => Frame::NewToken(NewToken {
-1226                token: self.take_len()?,
-1227            }),
-1228            FrameType::HandshakeDone => Frame::HandshakeDone,
-1229            FrameType::AckFrequency => Frame::AckFrequency(AckFrequency {
-1230                sequence: self.bytes.get()?,
-1231                ack_eliciting_threshold: self.bytes.get()?,
-1232                request_max_ack_delay: self.bytes.get()?,
-1233                reordering_threshold: self.bytes.get()?,
-1234            }),
-1235            FrameType::ImmediateAck => Frame::ImmediateAck,
-1236            FrameType::ObservedIpv4Addr | FrameType::ObservedIpv6Addr => {
-1237                let is_ipv6 = ty == FrameType::ObservedIpv6Addr;
-1238                let observed = ObservedAddr::read(&mut self.bytes, is_ipv6)?;
-1239                Frame::ObservedAddr(observed)
-1240            }
-1241            FrameType::PathAbandon => Frame::PathAbandon(PathAbandon::decode(&mut self.bytes)?),
-1242            FrameType::PathStatusAvailable => {
-1243                Frame::PathStatusAvailable(PathStatusAvailable::decode(&mut self.bytes)?)
-1244            }
-1245            FrameType::PathStatusBackup => {
-1246                Frame::PathStatusBackup(PathStatusBackup::decode(&mut self.bytes)?)
-1247            }
-1248            FrameType::MaxPathId => Frame::MaxPathId(MaxPathId::decode(&mut self.bytes)?),
-1249            FrameType::PathsBlocked => Frame::PathsBlocked(PathsBlocked::decode(&mut self.bytes)?),
-1250            FrameType::PathCidsBlocked => {
-1251                Frame::PathCidsBlocked(PathCidsBlocked::decode(&mut self.bytes)?)
-1252            }
-1253            FrameType::AddIpv4Address | FrameType::AddIpv6Address => {
-1254                let is_ipv6 = ty == FrameType::AddIpv6Address;
-1255                let add_address = AddAddress::read(&mut self.bytes, is_ipv6)?;
-1256                Frame::AddAddress(add_address)
-1257            }
-1258            FrameType::ReachOutAtIpv4 | FrameType::ReachOutAtIpv6 => {
-1259                let is_ipv6 = ty == FrameType::ReachOutAtIpv6;
-1260                let reach_out = ReachOut::read(&mut self.bytes, is_ipv6)?;
-1261                Frame::ReachOut(reach_out)
-1262            }
-1263            FrameType::RemoveAddress => Frame::RemoveAddress(RemoveAddress::read(&mut self.bytes)?),
-1264            FrameType::Stream(s) => Frame::Stream(Stream {
-1265                id: self.bytes.get()?,
-1266                offset: if s.off() { self.bytes.get_var()? } else { 0 },
-1267                fin: s.fin(),
-1268                data: if s.len() {
-1269                    self.take_len()?
-1270                } else {
-1271                    self.take_remaining()
-1272                },
-1273            }),
-1274            FrameType::Datagram(d) => Frame::Datagram(Datagram {
-1275                data: if d.len() {
-1276                    self.take_len()?
-1277                } else {
-1278                    self.take_remaining()
-1279                },
-1280            }),
-1281        })
-1282    }
-1283
-1284    fn take_remaining(&mut self) -> Bytes {
-1285        mem::take(&mut self.bytes)
+1095impl std::ops::AddAssign<EcnCodepoint> for EcnCounts {
+1096    fn add_assign(&mut self, rhs: EcnCodepoint) {
+1097        match rhs {
+1098            EcnCodepoint::Ect0 => {
+1099                self.ect0 += 1;
+1100            }
+1101            EcnCodepoint::Ect1 => {
+1102                self.ect1 += 1;
+1103            }
+1104            EcnCodepoint::Ce => {
+1105                self.ce += 1;
+1106            }
+1107        }
+1108    }
+1109}
+1110
+1111impl EcnCounts {
+1112    pub(crate) const ZERO: Self = Self {
+1113        ect0: 0,
+1114        ect1: 0,
+1115        ce: 0,
+1116    };
+1117}
+1118
+1119impl Encodable for EcnCounts {
+1120    fn encode<W: BufMut>(&self, out: &mut W) {
+1121        out.write_var(self.ect0);
+1122        out.write_var(self.ect1);
+1123        out.write_var(self.ce);
+1124    }
+1125}
+1126
+1127#[derive(Debug, Clone)]
+1128pub(crate) struct Stream {
+1129    pub(crate) id: StreamId,
+1130    pub(crate) offset: u64,
+1131    pub(crate) fin: bool,
+1132    pub(crate) data: Bytes,
+1133}
+1134
+1135impl FrameStruct for Stream {
+1136    const SIZE_BOUND: usize = 1 + 8 + 8 + 8;
+1137}
+1138
+1139/// Metadata from a stream frame
+1140#[derive(Debug, Clone, derive_more::Display)]
+1141#[display("STREAM id: {id} off: {} len: {} fin: {fin}", offsets.start, offsets.end - offsets.start)]
+1142pub(crate) struct StreamMeta {
+1143    pub(crate) id: StreamId,
+1144    pub(crate) offsets: Range<u64>,
+1145    pub(crate) fin: bool,
+1146}
+1147
+1148// This manual implementation exists because `Default` is not implemented for `StreamId`
+1149impl Default for StreamMeta {
+1150    fn default() -> Self {
+1151        Self {
+1152            id: StreamId(0),
+1153            offsets: 0..0,
+1154            fin: false,
+1155        }
+1156    }
+1157}
+1158
+1159impl StreamMeta {
+1160    pub(crate) fn encoder(self, encode_length: bool) -> StreamMetaEncoder {
+1161        StreamMetaEncoder {
+1162            meta: self,
+1163            encode_length,
+1164        }
+1165    }
+1166
+1167    const fn get_type(&self, encode_length: bool) -> StreamInfo {
+1168        let mut ty = *StreamInfo::VALUES.start();
+1169        if self.offsets.start != 0 {
+1170            ty |= 0x04;
+1171        }
+1172        if encode_length {
+1173            ty |= 0x02;
+1174        }
+1175        if self.fin {
+1176            ty |= 0x01;
+1177        }
+1178        StreamInfo(ty as u8)
+1179    }
+1180}
+1181
+1182#[derive(derive_more::Display)]
+1183#[display("{meta}")]
+1184pub(crate) struct StreamMetaEncoder {
+1185    pub(crate) meta: StreamMeta,
+1186    encode_length: bool,
+1187}
+1188
+1189impl StreamMetaEncoder {
+1190    const fn get_type(&self) -> FrameType {
+1191        FrameType::Stream(self.meta.get_type(self.encode_length))
+1192    }
+1193}
+1194
+1195impl Encodable for StreamMetaEncoder {
+1196    fn encode<W: BufMut>(&self, out: &mut W) {
+1197        let Self {
+1198            meta,
+1199            encode_length,
+1200        } = self;
+1201        out.write_var(meta.get_type(*encode_length).0 as u64); // 1 byte
+1202        out.write(meta.id); // <=8 bytes
+1203        if meta.offsets.start != 0 {
+1204            out.write_var(meta.offsets.start); // <=8 bytes
+1205        }
+1206        if *encode_length {
+1207            out.write_var(meta.offsets.end - meta.offsets.start); // <=8 bytes
+1208        }
+1209    }
+1210}
+1211
+1212/// A vector of [`StreamMeta`] with optimization for the single element case
+1213pub(crate) type StreamMetaVec = TinyVec<[StreamMeta; 1]>;
+1214
+1215#[derive(Debug, Clone, derive_more::Display)]
+1216#[display("CRYPTO off: {offset} len = {}", data.len())]
+1217pub(crate) struct Crypto {
+1218    pub(crate) offset: u64,
+1219    pub(crate) data: Bytes,
+1220}
+1221
+1222impl Crypto {
+1223    pub(crate) const SIZE_BOUND: usize = 17;
+1224
+1225    const fn get_type(&self) -> FrameType {
+1226        FrameType::Crypto
+1227    }
+1228}
+1229
+1230impl Encodable for Crypto {
+1231    fn encode<W: BufMut>(&self, out: &mut W) {
+1232        out.write(FrameType::Crypto);
+1233        out.write_var(self.offset);
+1234        out.write_var(self.data.len() as u64);
+1235        out.put_slice(&self.data);
+1236    }
+1237}
+1238
+1239#[derive(Debug, Clone, derive_more::Display)]
+1240#[display("NEW_TOKEN")]
+1241pub(crate) struct NewToken {
+1242    pub(crate) token: Bytes,
+1243}
+1244
+1245impl Encodable for NewToken {
+1246    fn encode<W: BufMut>(&self, out: &mut W) {
+1247        out.write(FrameType::NewToken);
+1248        out.write_var(self.token.len() as u64);
+1249        out.put_slice(&self.token);
+1250    }
+1251}
+1252
+1253impl NewToken {
+1254    pub(crate) fn size(&self) -> usize {
+1255        1 + VarInt::from_u64(self.token.len() as u64).unwrap().size() + self.token.len()
+1256    }
+1257
+1258    const fn get_type(&self) -> FrameType {
+1259        FrameType::NewToken
+1260    }
+1261}
+1262
+1263#[derive(Debug, Clone, derive_more::Display)]
+1264#[display("MAX_PATH_ID path_id: {_0}")]
+1265pub(crate) struct MaxPathId(pub(crate) PathId);
+1266
+1267impl MaxPathId {
+1268    pub(crate) const SIZE_BOUND: usize =
+1269        FrameType::MaxPathId.size() + VarInt(u32::MAX as u64).size();
+1270
+1271    const fn get_type(&self) -> FrameType {
+1272        FrameType::MaxPathId
+1273    }
+1274}
+1275
+1276impl Decodable for MaxPathId {
+1277    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+1278        Ok(Self(buf.get()?))
+1279    }
+1280}
+1281
+1282impl Encodable for MaxPathId {
+1283    fn encode<B: BufMut>(&self, buf: &mut B) {
+1284        buf.write(FrameType::MaxPathId);
+1285        buf.write(self.0);
 1286    }
 1287}
 1288
-1289impl Iterator for Iter {
-1290    type Item = Result<Frame, InvalidFrame>;
-1291    fn next(&mut self) -> Option<Self::Item> {
-1292        if !self.bytes.has_remaining() {
-1293            return None;
-1294        }
-1295        match self.try_next() {
-1296            Ok(x) => Some(Ok(x)),
-1297            Err(e) => {
-1298                // Corrupt frame, skip it and everything that follows
-1299                self.bytes.clear();
-1300                Some(Err(InvalidFrame {
-1301                    ty: self.last_ty,
-1302                    reason: e.reason(),
-1303                }))
-1304            }
-1305        }
+1289#[derive(Debug, Clone, PartialEq, Eq, derive_more::Display)]
+1290#[display("PATHS_BLOCKED remote_max_path_id: {_0}")]
+1291pub(crate) struct PathsBlocked(pub(crate) PathId);
+1292
+1293impl PathsBlocked {
+1294    pub(crate) const SIZE_BOUND: usize =
+1295        FrameType::PathsBlocked.size() + VarInt(u32::MAX as u64).size();
+1296
+1297    const fn get_type(&self) -> FrameType {
+1298        FrameType::PathsBlocked
+1299    }
+1300}
+1301
+1302impl Encodable for PathsBlocked {
+1303    fn encode<B: BufMut>(&self, buf: &mut B) {
+1304        buf.write(FrameType::PathsBlocked);
+1305        buf.write(self.0);
 1306    }
 1307}
 1308
-1309#[derive(Debug)]
-1310pub(crate) struct InvalidFrame {
-1311    pub(crate) ty: MaybeFrame,
-1312    pub(crate) reason: &'static str,
-1313}
-1314
-1315impl From<InvalidFrame> for TransportError {
-1316    fn from(err: InvalidFrame) -> Self {
-1317        let mut te = Self::FRAME_ENCODING_ERROR(err.reason);
-1318        te.frame = err.ty;
-1319        te
-1320    }
+1309impl Decodable for PathsBlocked {
+1310    /// Decode [`Self`] from the buffer, provided that the frame type has been verified
+1311    fn decode<B: Buf>(buf: &mut B) -> coding::Result<Self> {
+1312        Ok(Self(buf.get()?))
+1313    }
+1314}
+1315
+1316#[derive(Debug, Clone, PartialEq, Eq, derive_more::Display)]
+1317#[display("PATH_CIDS_BLOCKED path_id: {path_id} next_seq: {next_seq}")]
+1318pub(crate) struct PathCidsBlocked {
+1319    pub(crate) path_id: PathId,
+1320    pub(crate) next_seq: VarInt,
 1321}
 1322
-1323/// Validate exactly `n` ACK ranges in `buf` and return the number of bytes they cover
-1324fn scan_ack_blocks(mut buf: &[u8], largest: u64, n: usize) -> Result<usize, IterErr> {
-1325    let total_len = buf.remaining();
-1326    let first_block = buf.get_var()?;
-1327    let mut smallest = largest.checked_sub(first_block).ok_or(IterErr::Malformed)?;
-1328    for _ in 0..n {
-1329        let gap = buf.get_var()?;
-1330        smallest = smallest.checked_sub(gap + 2).ok_or(IterErr::Malformed)?;
-1331        let block = buf.get_var()?;
-1332        smallest = smallest.checked_sub(block).ok_or(IterErr::Malformed)?;
-1333    }
-1334    Ok(total_len - buf.remaining())
-1335}
-1336
-1337#[derive(Debug)]
-1338enum IterErr {
-1339    UnexpectedEnd,
-1340    InvalidFrameId,
-1341    Malformed,
-1342}
-1343
-1344impl IterErr {
-1345    fn reason(&self) -> &'static str {
-1346        use IterErr::*;
-1347        match *self {
-1348            UnexpectedEnd => "unexpected end",
-1349            InvalidFrameId => "invalid frame ID",
-1350            Malformed => "malformed",
-1351        }
-1352    }
-1353}
-1354
-1355impl From<UnexpectedEnd> for IterErr {
-1356    fn from(_: UnexpectedEnd) -> Self {
-1357        Self::UnexpectedEnd
-1358    }
-1359}
-1360
-1361#[derive(Debug, Clone)]
-1362pub(crate) struct AckIter<'a> {
-1363    largest: u64,
-1364    data: &'a [u8],
-1365}
-1366
-1367impl<'a> AckIter<'a> {
-1368    fn new(largest: u64, data: &'a [u8]) -> Self {
-1369        Self { largest, data }
-1370    }
-1371}
-1372
-1373impl Iterator for AckIter<'_> {
-1374    type Item = RangeInclusive<u64>;
-1375    fn next(&mut self) -> Option<RangeInclusive<u64>> {
-1376        if !self.data.has_remaining() {
-1377            return None;
-1378        }
-1379        let block = self.data.get_var().unwrap();
-1380        let largest = self.largest;
-1381        if let Ok(gap) = self.data.get_var() {
-1382            self.largest -= block + gap + 2;
-1383        }
-1384        Some(largest - block..=largest)
-1385    }
-1386}
-1387
-1388#[allow(unreachable_pub)] // fuzzing only
-1389#[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
-1390#[derive(Debug, Copy, Clone)]
-1391pub struct ResetStream {
-1392    pub(crate) id: StreamId,
-1393    pub(crate) error_code: VarInt,
-1394    pub(crate) final_offset: VarInt,
-1395}
-1396
-1397impl FrameStruct for ResetStream {
-1398    const SIZE_BOUND: usize = 1 + 8 + 8 + 8;
-1399}
-1400
-1401impl Encodable for ResetStream {
-1402    fn encode<W: BufMut>(&self, out: &mut W) {
-1403        out.write(FrameType::ResetStream); // 1 byte
-1404        out.write(self.id); // <= 8 bytes
-1405        out.write(self.error_code); // <= 8 bytes
-1406        out.write(self.final_offset); // <= 8 bytes
-1407    }
-1408}
-1409
-1410#[derive(Debug, Copy, Clone)]
-1411pub(crate) struct StopSending {
-1412    pub(crate) id: StreamId,
-1413    pub(crate) error_code: VarInt,
-1414}
-1415
-1416impl FrameStruct for StopSending {
-1417    const SIZE_BOUND: usize = 1 + 8 + 8;
-1418}
-1419
-1420impl Encodable for StopSending {
-1421    fn encode<W: BufMut>(&self, out: &mut W) {
-1422        out.write(FrameType::StopSending); // 1 byte
-1423        out.write(self.id); // <= 8 bytes
-1424        out.write(self.error_code) // <= 8 bytes
-1425    }
-1426}
-1427
-1428#[derive(Debug, Copy, Clone, PartialEq, Eq)]
-1429pub(crate) struct NewConnectionId {
-1430    pub(crate) path_id: Option<PathId>,
-1431    pub(crate) sequence: u64,
-1432    pub(crate) retire_prior_to: u64,
-1433    pub(crate) id: ConnectionId,
-1434    pub(crate) reset_token: ResetToken,
-1435}
-1436
-1437impl NewConnectionId {
-1438    /// Maximum size of this frame when the frame type is [`FrameType::NewConnectionId`],
-1439    pub(crate) const SIZE_BOUND: usize = {
-1440        let type_len = FrameType::NewConnectionId.size();
-1441        let seq_max_len = 8usize;
-1442        let retire_prior_to_max_len = 8usize;
-1443        let cid_len_len = 1;
-1444        let cid_len = 160;
-1445        let reset_token_len = 16;
-1446        type_len + seq_max_len + retire_prior_to_max_len + cid_len_len + cid_len + reset_token_len
-1447    };
-1448
-1449    /// Maximum size of this frame when the frame type is [`FrameType::PathNewConnectionId`],
-1450    pub(crate) const SIZE_BOUND_MULTIPATH: usize = {
-1451        let type_len = FrameType::PathNewConnectionId.size();
-1452        let path_id_len = VarInt::from_u32(u32::MAX).size();
-1453        let seq_max_len = 8usize;
-1454        let retire_prior_to_max_len = 8usize;
-1455        let cid_len_len = 1;
-1456        let cid_len = 160;
-1457        let reset_token_len = 16;
-1458        type_len
-1459            + path_id_len
-1460            + seq_max_len
-1461            + retire_prior_to_max_len
-1462            + cid_len_len
-1463            + cid_len
-1464            + reset_token_len
-1465    };
-1466
-1467    pub(crate) fn get_type(&self) -> FrameType {
-1468        if self.path_id.is_some() {
-1469            FrameType::PathNewConnectionId
-1470        } else {
-1471            FrameType::NewConnectionId
-1472        }
-1473    }
-1474
-1475    /// Returns the maximum encoded size on the wire.
-1476    ///
-1477    /// This is a rough upper estimate, does not squeeze every last byte out.
-1478    pub(crate) const fn size_bound(path_new_cid: bool, cid_len: usize) -> usize {
-1479        let upper_bound = match path_new_cid {
-1480            true => Self::SIZE_BOUND_MULTIPATH,
-1481            false => Self::SIZE_BOUND,
-1482        };
-1483        // instead of using the maximum cid len, use the provided one
-1484        upper_bound - 160 + cid_len
-1485    }
-1486
-1487    fn read<R: Buf>(bytes: &mut R, read_path: bool) -> Result<Self, IterErr> {
-1488        let path_id = if read_path { Some(bytes.get()?) } else { None };
-1489        let sequence = bytes.get_var()?;
-1490        let retire_prior_to = bytes.get_var()?;
-1491        if retire_prior_to > sequence {
-1492            return Err(IterErr::Malformed);
-1493        }
-1494        let length = bytes.get::<u8>()? as usize;
-1495        if length > MAX_CID_SIZE || length == 0 {
-1496            return Err(IterErr::Malformed);
-1497        }
-1498        if length > bytes.remaining() {
-1499            return Err(IterErr::UnexpectedEnd);
-1500        }
-1501        let mut stage = [0; MAX_CID_SIZE];
-1502        bytes.copy_to_slice(&mut stage[0..length]);
-1503        let id = ConnectionId::new(&stage[..length]);
-1504        if bytes.remaining() < 16 {
-1505            return Err(IterErr::UnexpectedEnd);
-1506        }
-1507        let mut reset_token = [0; RESET_TOKEN_SIZE];
-1508        bytes.copy_to_slice(&mut reset_token);
-1509        Ok(Self {
-1510            path_id,
-1511            sequence,
-1512            retire_prior_to,
-1513            id,
-1514            reset_token: reset_token.into(),
-1515        })
-1516    }
-1517}
-1518
-1519impl Encodable for NewConnectionId {
-1520    fn encode<W: BufMut>(&self, out: &mut W) {
-1521        out.write(self.get_type());
-1522        if let Some(id) = self.path_id {
-1523            out.write(id);
-1524        }
-1525        out.write_var(self.sequence);
-1526        out.write_var(self.retire_prior_to);
-1527        out.write(self.id.len() as u8);
-1528        out.put_slice(&self.id);
-1529        out.put_slice(&self.reset_token);
-1530    }
-1531}
-1532
-1533impl FrameStruct for NewConnectionId {
-1534    const SIZE_BOUND: usize = 1 + 8 + 8 + 1 + MAX_CID_SIZE + RESET_TOKEN_SIZE;
-1535}
-1536
-1537/// An unreliable datagram
-1538#[derive(Debug, Clone)]
-1539pub struct Datagram {
-1540    /// Payload
-1541    pub data: Bytes,
-1542}
-1543
-1544impl FrameStruct for Datagram {
-1545    const SIZE_BOUND: usize = 1 + 8;
-1546}
-1547
-1548impl Datagram {
-1549    pub(crate) fn size(&self, length: bool) -> usize {
-1550        1 + if length {
-1551            VarInt::from_u64(self.data.len() as u64).unwrap().size()
-1552        } else {
-1553            0
-1554        } + self.data.len()
-1555    }
-1556}
-1557
-1558impl Encodable for Datagram {
-1559    fn encode<B: BufMut>(&self, out: &mut B) {
-1560        // A datagram is encoded only after this is verified.
-1561        const ENCODE_LEN: bool = true;
-1562        out.write(FrameType::Datagram(DatagramInfo(
-1563            *DatagramInfo::VALUES.start() as u8 | u8::from(ENCODE_LEN),
-1564        ))); // 1 byte
-1565        // Safe to unwrap because we check length sanity before queueing datagrams
-1566        out.write(VarInt::from_u64(self.data.len() as u64).unwrap()); // <= 8 bytes
-1567        out.put_slice(&self.data);
-1568    }
-1569}
-1570
-1571#[derive(Debug, Copy, Clone, PartialEq, Eq)]
-1572pub(crate) struct AckFrequency {
-1573    pub(crate) sequence: VarInt,
-1574    pub(crate) ack_eliciting_threshold: VarInt,
-1575    pub(crate) request_max_ack_delay: VarInt,
-1576    pub(crate) reordering_threshold: VarInt,
-1577}
-1578
-1579impl Encodable for AckFrequency {
-1580    fn encode<W: BufMut>(&self, buf: &mut W) {
-1581        buf.write(FrameType::AckFrequency);
-1582        buf.write(self.sequence);
-1583        buf.write(self.ack_eliciting_threshold);
-1584        buf.write(self.request_max_ack_delay);
-1585        buf.write(self.reordering_threshold);
-1586    }
-1587}
-1588
-1589/* Address Discovery https://datatracker.ietf.org/doc/draft-seemann-quic-address-discovery/ */
-1590
-1591/// Conjunction of the information contained in the address discovery frames
-1592/// ([`FrameType::ObservedIpv4Addr`], [`FrameType::ObservedIpv6Addr`]).
-1593#[derive(Debug, PartialEq, Eq, Clone)]
-1594pub(crate) struct ObservedAddr {
-1595    /// Monotonically increasing integer within the same connection.
-1596    pub(crate) seq_no: VarInt,
-1597    /// Reported observed address.
-1598    pub(crate) ip: IpAddr,
-1599    /// Reported observed port.
-1600    pub(crate) port: u16,
-1601}
-1602
-1603impl ObservedAddr {
-1604    pub(crate) fn new<N: Into<VarInt>>(remote: std::net::SocketAddr, seq_no: N) -> Self {
-1605        Self {
-1606            ip: remote.ip(),
-1607            port: remote.port(),
-1608            seq_no: seq_no.into(),
-1609        }
-1610    }
-1611
-1612    /// Get the [`FrameType`] for this frame.
-1613    pub(crate) fn get_type(&self) -> FrameType {
-1614        if self.ip.is_ipv6() {
-1615            FrameType::ObservedIpv6Addr
-1616        } else {
-1617            FrameType::ObservedIpv4Addr
+1323impl PathCidsBlocked {
+1324    pub(crate) const SIZE_BOUND: usize =
+1325        FrameType::PathCidsBlocked.size() + VarInt(u32::MAX as u64).size() + VarInt::MAX.size();
+1326
+1327    const fn get_type(&self) -> FrameType {
+1328        FrameType::PathCidsBlocked
+1329    }
+1330}
+1331
+1332impl Decodable for PathCidsBlocked {
+1333    fn decode<R: Buf>(buf: &mut R) -> coding::Result<Self> {
+1334        Ok(Self {
+1335            path_id: buf.get()?,
+1336            next_seq: buf.get()?,
+1337        })
+1338    }
+1339}
+1340
+1341impl Encodable for PathCidsBlocked {
+1342    fn encode<W: BufMut>(&self, buf: &mut W) {
+1343        buf.write(FrameType::PathCidsBlocked);
+1344        buf.write(self.path_id);
+1345        buf.write(self.next_seq);
+1346    }
+1347}
+1348
+1349pub(crate) struct Iter {
+1350    bytes: Bytes,
+1351    last_ty: MaybeFrame,
+1352}
+1353
+1354impl Iter {
+1355    pub(crate) fn new(payload: Bytes) -> Result<Self, TransportError> {
+1356        if payload.is_empty() {
+1357            // "An endpoint MUST treat receipt of a packet containing no frames as a
+1358            // connection error of type PROTOCOL_VIOLATION."
+1359            // https://www.rfc-editor.org/rfc/rfc9000.html#name-frames-and-frame-types
+1360            return Err(TransportError::PROTOCOL_VIOLATION(
+1361                "packet payload is empty",
+1362            ));
+1363        }
+1364
+1365        Ok(Self {
+1366            bytes: payload,
+1367            last_ty: MaybeFrame::None,
+1368        })
+1369    }
+1370
+1371    fn take_len(&mut self) -> Result<Bytes, UnexpectedEnd> {
+1372        let len = self.bytes.get_var()?;
+1373        if len > self.bytes.remaining() as u64 {
+1374            return Err(UnexpectedEnd);
+1375        }
+1376        Ok(self.bytes.split_to(len as usize))
+1377    }
+1378
+1379    #[track_caller]
+1380    fn try_next(&mut self) -> Result<Frame, IterErr> {
+1381        self.last_ty = self.bytes.get()?;
+1382
+1383        let ty = match self.last_ty {
+1384            MaybeFrame::None => FrameType::Padding,
+1385            MaybeFrame::Unknown(_other) => return Err(IterErr::InvalidFrameId),
+1386            MaybeFrame::Known(frame_type) => frame_type,
+1387        };
+1388        Ok(match ty {
+1389            FrameType::Padding => Frame::Padding,
+1390            FrameType::ResetStream => Frame::ResetStream(ResetStream {
+1391                id: self.bytes.get()?,
+1392                error_code: self.bytes.get()?,
+1393                final_offset: self.bytes.get()?,
+1394            }),
+1395            FrameType::ConnectionClose => Frame::Close(Close::Connection(ConnectionClose {
+1396                error_code: self.bytes.get()?,
+1397                frame_type: self.bytes.get()?,
+1398                reason: self.take_len()?,
+1399            })),
+1400            FrameType::ApplicationClose => Frame::Close(Close::Application(ApplicationClose {
+1401                error_code: self.bytes.get()?,
+1402                reason: self.take_len()?,
+1403            })),
+1404            FrameType::MaxData => Frame::MaxData(self.bytes.get()?),
+1405            FrameType::MaxStreamData => Frame::MaxStreamData(self.bytes.get()?),
+1406            FrameType::MaxStreamsBidi => Frame::MaxStreams(MaxStreams {
+1407                dir: Dir::Bi,
+1408                count: self.bytes.get_var()?,
+1409            }),
+1410            FrameType::MaxStreamsUni => Frame::MaxStreams(MaxStreams {
+1411                dir: Dir::Uni,
+1412                count: self.bytes.get_var()?,
+1413            }),
+1414            FrameType::Ping => Frame::Ping,
+1415            FrameType::DataBlocked => Frame::DataBlocked {
+1416                offset: self.bytes.get_var()?,
+1417            },
+1418            FrameType::StreamDataBlocked => Frame::StreamDataBlocked {
+1419                id: self.bytes.get()?,
+1420                offset: self.bytes.get_var()?,
+1421            },
+1422            FrameType::StreamsBlockedBidi => Frame::StreamsBlocked {
+1423                dir: Dir::Bi,
+1424                limit: self.bytes.get_var()?,
+1425            },
+1426            FrameType::StreamsBlockedUni => Frame::StreamsBlocked {
+1427                dir: Dir::Uni,
+1428                limit: self.bytes.get_var()?,
+1429            },
+1430            FrameType::StopSending => Frame::StopSending(StopSending {
+1431                id: self.bytes.get()?,
+1432                error_code: self.bytes.get()?,
+1433            }),
+1434            FrameType::RetireConnectionId | FrameType::PathRetireConnectionId => {
+1435                Frame::RetireConnectionId(RetireConnectionId::decode(
+1436                    &mut self.bytes,
+1437                    ty == FrameType::PathRetireConnectionId,
+1438                )?)
+1439            }
+1440            FrameType::Ack | FrameType::AckEcn => {
+1441                let largest = self.bytes.get_var()?;
+1442                let delay = self.bytes.get_var()?;
+1443                let extra_blocks = self.bytes.get_var()? as usize;
+1444                let n = scan_ack_blocks(&self.bytes, largest, extra_blocks)?;
+1445                Frame::Ack(Ack {
+1446                    delay,
+1447                    largest,
+1448                    additional: self.bytes.split_to(n),
+1449                    ecn: if ty != FrameType::AckEcn && ty != FrameType::PathAckEcn {
+1450                        None
+1451                    } else {
+1452                        Some(EcnCounts {
+1453                            ect0: self.bytes.get_var()?,
+1454                            ect1: self.bytes.get_var()?,
+1455                            ce: self.bytes.get_var()?,
+1456                        })
+1457                    },
+1458                })
+1459            }
+1460            FrameType::PathAck | FrameType::PathAckEcn => {
+1461                let path_id = self.bytes.get()?;
+1462                let largest = self.bytes.get_var()?;
+1463                let delay = self.bytes.get_var()?;
+1464                let extra_blocks = self.bytes.get_var()? as usize;
+1465                let n = scan_ack_blocks(&self.bytes, largest, extra_blocks)?;
+1466                Frame::PathAck(PathAck {
+1467                    path_id,
+1468                    delay,
+1469                    largest,
+1470                    additional: self.bytes.split_to(n),
+1471                    ecn: if ty != FrameType::AckEcn && ty != FrameType::PathAckEcn {
+1472                        None
+1473                    } else {
+1474                        Some(EcnCounts {
+1475                            ect0: self.bytes.get_var()?,
+1476                            ect1: self.bytes.get_var()?,
+1477                            ce: self.bytes.get_var()?,
+1478                        })
+1479                    },
+1480                })
+1481            }
+1482            FrameType::PathChallenge => Frame::PathChallenge(self.bytes.get()?),
+1483            FrameType::PathResponse => Frame::PathResponse(self.bytes.get()?),
+1484            FrameType::NewConnectionId | FrameType::PathNewConnectionId => {
+1485                let read_path = ty == FrameType::PathNewConnectionId;
+1486                Frame::NewConnectionId(NewConnectionId::read(&mut self.bytes, read_path)?)
+1487            }
+1488            FrameType::Crypto => Frame::Crypto(Crypto {
+1489                offset: self.bytes.get_var()?,
+1490                data: self.take_len()?,
+1491            }),
+1492            FrameType::NewToken => Frame::NewToken(NewToken {
+1493                token: self.take_len()?,
+1494            }),
+1495            FrameType::HandshakeDone => Frame::HandshakeDone,
+1496            FrameType::AckFrequency => Frame::AckFrequency(AckFrequency {
+1497                sequence: self.bytes.get()?,
+1498                ack_eliciting_threshold: self.bytes.get()?,
+1499                request_max_ack_delay: self.bytes.get()?,
+1500                reordering_threshold: self.bytes.get()?,
+1501            }),
+1502            FrameType::ImmediateAck => Frame::ImmediateAck,
+1503            FrameType::ObservedIpv4Addr | FrameType::ObservedIpv6Addr => {
+1504                let is_ipv6 = ty == FrameType::ObservedIpv6Addr;
+1505                let observed = ObservedAddr::read(&mut self.bytes, is_ipv6)?;
+1506                Frame::ObservedAddr(observed)
+1507            }
+1508            FrameType::PathAbandon => Frame::PathAbandon(PathAbandon::decode(&mut self.bytes)?),
+1509            FrameType::PathStatusAvailable => {
+1510                Frame::PathStatusAvailable(PathStatusAvailable::decode(&mut self.bytes)?)
+1511            }
+1512            FrameType::PathStatusBackup => {
+1513                Frame::PathStatusBackup(PathStatusBackup::decode(&mut self.bytes)?)
+1514            }
+1515            FrameType::MaxPathId => Frame::MaxPathId(MaxPathId::decode(&mut self.bytes)?),
+1516            FrameType::PathsBlocked => Frame::PathsBlocked(PathsBlocked::decode(&mut self.bytes)?),
+1517            FrameType::PathCidsBlocked => {
+1518                Frame::PathCidsBlocked(PathCidsBlocked::decode(&mut self.bytes)?)
+1519            }
+1520            FrameType::AddIpv4Address | FrameType::AddIpv6Address => {
+1521                let is_ipv6 = ty == FrameType::AddIpv6Address;
+1522                let add_address = AddAddress::read(&mut self.bytes, is_ipv6)?;
+1523                Frame::AddAddress(add_address)
+1524            }
+1525            FrameType::ReachOutAtIpv4 | FrameType::ReachOutAtIpv6 => {
+1526                let is_ipv6 = ty == FrameType::ReachOutAtIpv6;
+1527                let reach_out = ReachOut::read(&mut self.bytes, is_ipv6)?;
+1528                Frame::ReachOut(reach_out)
+1529            }
+1530            FrameType::RemoveAddress => Frame::RemoveAddress(RemoveAddress::read(&mut self.bytes)?),
+1531            FrameType::Stream(s) => Frame::Stream(Stream {
+1532                id: self.bytes.get()?,
+1533                offset: if s.off() { self.bytes.get_var()? } else { 0 },
+1534                fin: s.fin(),
+1535                data: if s.len() {
+1536                    self.take_len()?
+1537                } else {
+1538                    self.take_remaining()
+1539                },
+1540            }),
+1541            FrameType::Datagram(d) => Frame::Datagram(Datagram {
+1542                data: if d.len() {
+1543                    self.take_len()?
+1544                } else {
+1545                    self.take_remaining()
+1546                },
+1547            }),
+1548        })
+1549    }
+1550
+1551    fn take_remaining(&mut self) -> Bytes {
+1552        mem::take(&mut self.bytes)
+1553    }
+1554}
+1555
+1556impl Iterator for Iter {
+1557    type Item = Result<Frame, InvalidFrame>;
+1558    fn next(&mut self) -> Option<Self::Item> {
+1559        if !self.bytes.has_remaining() {
+1560            return None;
+1561        }
+1562        match self.try_next() {
+1563            Ok(x) => Some(Ok(x)),
+1564            Err(e) => {
+1565                // Corrupt frame, skip it and everything that follows
+1566                self.bytes.clear();
+1567                Some(Err(InvalidFrame {
+1568                    ty: self.last_ty,
+1569                    reason: e.reason(),
+1570                }))
+1571            }
+1572        }
+1573    }
+1574}
+1575
+1576#[derive(Debug)]
+1577pub(crate) struct InvalidFrame {
+1578    pub(crate) ty: MaybeFrame,
+1579    pub(crate) reason: &'static str,
+1580}
+1581
+1582impl From<InvalidFrame> for TransportError {
+1583    fn from(err: InvalidFrame) -> Self {
+1584        let mut te = Self::FRAME_ENCODING_ERROR(err.reason);
+1585        te.frame = err.ty;
+1586        te
+1587    }
+1588}
+1589
+1590/// Validate exactly `n` ACK ranges in `buf` and return the number of bytes they cover
+1591fn scan_ack_blocks(mut buf: &[u8], largest: u64, n: usize) -> Result<usize, IterErr> {
+1592    let total_len = buf.remaining();
+1593    let first_block = buf.get_var()?;
+1594    let mut smallest = largest.checked_sub(first_block).ok_or(IterErr::Malformed)?;
+1595    for _ in 0..n {
+1596        let gap = buf.get_var()?;
+1597        smallest = smallest.checked_sub(gap + 2).ok_or(IterErr::Malformed)?;
+1598        let block = buf.get_var()?;
+1599        smallest = smallest.checked_sub(block).ok_or(IterErr::Malformed)?;
+1600    }
+1601    Ok(total_len - buf.remaining())
+1602}
+1603
+1604#[derive(Debug)]
+1605enum IterErr {
+1606    UnexpectedEnd,
+1607    InvalidFrameId,
+1608    Malformed,
+1609}
+1610
+1611impl IterErr {
+1612    fn reason(&self) -> &'static str {
+1613        use IterErr::*;
+1614        match *self {
+1615            UnexpectedEnd => "unexpected end",
+1616            InvalidFrameId => "invalid frame ID",
+1617            Malformed => "malformed",
 1618        }
 1619    }
-1620
-1621    /// Compute the number of bytes needed to encode the frame.
-1622    pub(crate) fn size(&self) -> usize {
-1623        let type_size = self.get_type().size();
-1624        let req_id_bytes = self.seq_no.size();
-1625        let ip_bytes = if self.ip.is_ipv6() { 16 } else { 4 };
-1626        let port_bytes = 2;
-1627        type_size + req_id_bytes + ip_bytes + port_bytes
-1628    }
-1629
-1630    /// Reads the frame contents from the buffer.
-1631    ///
-1632    /// Should only be called when the frame type has been identified as
-1633    /// [`FrameType::ObservedIpv4Addr`] or [`FrameType::ObservedIpv6Addr`].
-1634    pub(crate) fn read<R: Buf>(bytes: &mut R, is_ipv6: bool) -> coding::Result<Self> {
-1635        let seq_no = bytes.get()?;
-1636        let ip = if is_ipv6 {
-1637            IpAddr::V6(bytes.get()?)
-1638        } else {
-1639            IpAddr::V4(bytes.get()?)
-1640        };
-1641        let port = bytes.get()?;
-1642        Ok(Self { seq_no, ip, port })
-1643    }
-1644
-1645    /// Gives the [`SocketAddr`] reported in the frame.
-1646    pub(crate) fn socket_addr(&self) -> SocketAddr {
-1647        (self.ip, self.port).into()
-1648    }
-1649}
-1650
-1651impl Encodable for ObservedAddr {
-1652    fn encode<W: BufMut>(&self, buf: &mut W) {
-1653        buf.write(self.get_type());
-1654        buf.write(self.seq_no);
-1655        match self.ip {
-1656            IpAddr::V4(ipv4_addr) => {
-1657                buf.write(ipv4_addr);
-1658            }
-1659            IpAddr::V6(ipv6_addr) => {
-1660                buf.write(ipv6_addr);
-1661            }
-1662        }
-1663        buf.write::<u16>(self.port);
-1664    }
-1665}
-1666
-1667/* Multipath <https://datatracker.ietf.org/doc/draft-ietf-quic-multipath/> */
-1668
-1669#[derive(Debug, PartialEq, Eq)]
-1670pub(crate) struct PathAbandon {
-1671    pub(crate) path_id: PathId,
-1672    pub(crate) error_code: TransportErrorCode,
+1620}
+1621
+1622impl From<UnexpectedEnd> for IterErr {
+1623    fn from(_: UnexpectedEnd) -> Self {
+1624        Self::UnexpectedEnd
+1625    }
+1626}
+1627
+1628#[derive(Debug, Clone)]
+1629pub(crate) struct AckIter<'a> {
+1630    largest: u64,
+1631    data: &'a [u8],
+1632}
+1633
+1634impl<'a> AckIter<'a> {
+1635    fn new(largest: u64, data: &'a [u8]) -> Self {
+1636        Self { largest, data }
+1637    }
+1638}
+1639
+1640impl Iterator for AckIter<'_> {
+1641    type Item = RangeInclusive<u64>;
+1642    fn next(&mut self) -> Option<RangeInclusive<u64>> {
+1643        if !self.data.has_remaining() {
+1644            return None;
+1645        }
+1646        let block = self.data.get_var().unwrap();
+1647        let largest = self.largest;
+1648        if let Ok(gap) = self.data.get_var() {
+1649            self.largest -= block + gap + 2;
+1650        }
+1651        Some(largest - block..=largest)
+1652    }
+1653}
+1654
+1655#[allow(unreachable_pub)] // fuzzing only
+1656#[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
+1657#[derive(Debug, Copy, Clone, derive_more::Display)]
+1658#[display("RESET_STREAM id: {id}")]
+1659pub struct ResetStream {
+1660    pub(crate) id: StreamId,
+1661    pub(crate) error_code: VarInt,
+1662    pub(crate) final_offset: VarInt,
+1663}
+1664
+1665impl ResetStream {
+1666    const fn get_type(&self) -> FrameType {
+1667        FrameType::ResetStream
+1668    }
+1669}
+1670
+1671impl FrameStruct for ResetStream {
+1672    const SIZE_BOUND: usize = 1 + 8 + 8 + 8;
 1673}
 1674
-1675impl PathAbandon {
-1676    pub(crate) const SIZE_BOUND: usize = FrameType::PathAbandon.size() + 8 + 8;
-1677}
-1678
-1679impl Encodable for PathAbandon {
-1680    fn encode<W: BufMut>(&self, buf: &mut W) {
-1681        buf.write(FrameType::PathAbandon);
-1682        buf.write(self.path_id);
-1683        buf.write(self.error_code);
-1684    }
-1685}
-1686
-1687impl Decodable for PathAbandon {
-1688    fn decode<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
-1689        Ok(Self {
-1690            path_id: bytes.get()?,
-1691            error_code: bytes.get()?,
-1692        })
-1693    }
-1694}
-1695
-1696#[derive(Debug, PartialEq, Eq)]
-1697pub(crate) struct PathStatusAvailable {
-1698    pub(crate) path_id: PathId,
-1699    pub(crate) status_seq_no: VarInt,
-1700}
-1701
-1702impl PathStatusAvailable {
-1703    const TYPE: FrameType = FrameType::PathStatusAvailable;
-1704    pub(crate) const SIZE_BOUND: usize = FrameType::PathStatusAvailable.size() + 8 + 8;
-1705}
-1706
-1707impl Encodable for PathStatusAvailable {
-1708    fn encode<W: BufMut>(&self, buf: &mut W) {
-1709        buf.write(Self::TYPE);
-1710        buf.write(self.path_id);
-1711        buf.write(self.status_seq_no);
-1712    }
-1713}
-1714
-1715impl Decodable for PathStatusAvailable {
-1716    fn decode<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
-1717        Ok(Self {
-1718            path_id: bytes.get()?,
-1719            status_seq_no: bytes.get()?,
-1720        })
-1721    }
-1722}
-1723
-1724#[derive(Debug, PartialEq, Eq)]
-1725pub(crate) struct PathStatusBackup {
-1726    pub(crate) path_id: PathId,
-1727    pub(crate) status_seq_no: VarInt,
-1728}
-1729
-1730impl PathStatusBackup {
-1731    const TYPE: FrameType = FrameType::PathStatusBackup;
-1732}
-1733
-1734impl Encodable for PathStatusBackup {
-1735    fn encode<W: BufMut>(&self, buf: &mut W) {
-1736        buf.write(Self::TYPE);
-1737        buf.write(self.path_id);
-1738        buf.write(self.status_seq_no);
-1739    }
-1740}
-1741
-1742impl Decodable for PathStatusBackup {
-1743    fn decode<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
-1744        Ok(Self {
-1745            path_id: bytes.get()?,
-1746            status_seq_no: bytes.get()?,
-1747        })
-1748    }
-1749}
-1750
-1751/* Nat traversal frames */
-1752
-1753/// Conjunction of the information contained in the add address frames
-1754/// ([`FrameType::AddIpv4Address`], [`FrameType::AddIpv6Address`]).
-1755#[derive(Debug, PartialEq, Eq, Copy, Clone, PartialOrd, Ord)]
-1756// TODO(@divma): remove
-1757#[allow(dead_code)]
-1758pub(crate) struct AddAddress {
-1759    /// Monotonically increasing integer within the same connection
-1760    // TODO(@divma): both assumed, the draft has no mention of this but it's standard
-1761    pub(crate) seq_no: VarInt,
-1762    /// Address to include in the known set
-1763    pub(crate) ip: IpAddr,
-1764    /// Port to use with this address
-1765    pub(crate) port: u16,
-1766}
-1767
-1768// TODO(@divma): remove
-1769#[allow(dead_code)]
-1770impl AddAddress {
-1771    /// Smallest number of bytes this type of frame is guaranteed to fit within.
-1772    pub(crate) const SIZE_BOUND: usize = Self {
-1773        ip: IpAddr::V6(std::net::Ipv6Addr::LOCALHOST),
-1774        port: u16::MAX,
-1775        seq_no: VarInt::MAX,
-1776    }
-1777    .size();
-1778
-1779    pub(crate) const fn new((ip, port): (IpAddr, u16), seq_no: VarInt) -> Self {
-1780        Self { ip, port, seq_no }
-1781    }
-1782
-1783    /// Get the [`FrameType`] for this frame.
-1784    pub(crate) const fn get_type(&self) -> FrameType {
-1785        if self.ip.is_ipv6() {
-1786            FrameType::AddIpv6Address
-1787        } else {
-1788            FrameType::AddIpv4Address
-1789        }
-1790    }
-1791
-1792    /// Compute the number of bytes needed to encode the frame
-1793    pub(crate) const fn size(&self) -> usize {
-1794        let type_size = self.get_type().size();
-1795        let seq_no_bytes = self.seq_no.size();
-1796        let ip_bytes = if self.ip.is_ipv6() { 16 } else { 4 };
-1797        let port_bytes = 2;
-1798        type_size + seq_no_bytes + ip_bytes + port_bytes
-1799    }
-1800
-1801    /// Read the frame contents from the buffer
-1802    ///
-1803    /// Should only be called when the frame type has been identified as
-1804    /// [`FrameType::AddIpv4Address`] or [`FrameType::AddIpv6Address`].
-1805    pub(crate) fn read<R: Buf>(bytes: &mut R, is_ipv6: bool) -> coding::Result<Self> {
-1806        let seq_no = bytes.get()?;
-1807        let ip = if is_ipv6 {
-1808            IpAddr::V6(bytes.get()?)
-1809        } else {
-1810            IpAddr::V4(bytes.get()?)
-1811        };
-1812        let port = bytes.get()?;
-1813        Ok(Self { seq_no, ip, port })
-1814    }
-1815
-1816    /// Give the [`SocketAddr`] encoded in the frame
-1817    pub(crate) fn socket_addr(&self) -> SocketAddr {
-1818        self.ip_port().into()
-1819    }
-1820
-1821    pub(crate) fn ip_port(&self) -> (IpAddr, u16) {
-1822        (self.ip, self.port)
-1823    }
-1824}
-1825
-1826impl Encodable for AddAddress {
-1827    fn encode<W: BufMut>(&self, buf: &mut W) {
-1828        buf.write(self.get_type());
-1829        buf.write(self.seq_no);
-1830        match self.ip {
-1831            IpAddr::V4(ipv4_addr) => {
-1832                buf.write(ipv4_addr);
-1833            }
-1834            IpAddr::V6(ipv6_addr) => {
-1835                buf.write(ipv6_addr);
-1836            }
-1837        }
-1838        buf.write::<u16>(self.port);
-1839    }
-1840}
-1841
-1842/// Conjunction of the information contained in the reach out frames
-1843/// ([`FrameType::ReachOutAtIpv4`], [`FrameType::ReachOutAtIpv6`])
-1844#[derive(Debug, PartialEq, Eq, Clone)]
-1845// TODO(@divma): remove
-1846#[allow(dead_code)]
-1847pub(crate) struct ReachOut {
-1848    /// The sequence number of the NAT Traversal attempts
-1849    pub(crate) round: VarInt,
-1850    /// Address to use
-1851    pub(crate) ip: IpAddr,
-1852    /// Port to use with this address
-1853    pub(crate) port: u16,
-1854}
-1855
-1856// TODO(@divma): remove
-1857#[allow(dead_code)]
-1858impl ReachOut {
-1859    /// Smallest number of bytes this type of frame is guaranteed to fit within
-1860    pub(crate) const SIZE_BOUND: usize = Self {
-1861        round: VarInt::MAX,
-1862        ip: IpAddr::V6(std::net::Ipv6Addr::LOCALHOST),
-1863        port: u16::MAX,
+1675impl Encodable for ResetStream {
+1676    fn encode<W: BufMut>(&self, out: &mut W) {
+1677        out.write(FrameType::ResetStream); // 1 byte
+1678        out.write(self.id); // <= 8 bytes
+1679        out.write(self.error_code); // <= 8 bytes
+1680        out.write(self.final_offset); // <= 8 bytes
+1681    }
+1682}
+1683
+1684#[derive(Debug, Copy, Clone, derive_more::Display)]
+1685#[display("STOP_SENDING id: {id}")]
+1686pub(crate) struct StopSending {
+1687    pub(crate) id: StreamId,
+1688    pub(crate) error_code: VarInt,
+1689}
+1690
+1691impl FrameStruct for StopSending {
+1692    const SIZE_BOUND: usize = 1 + 8 + 8;
+1693}
+1694
+1695impl StopSending {
+1696    const fn get_type(&self) -> FrameType {
+1697        FrameType::StopSending
+1698    }
+1699}
+1700
+1701impl Encodable for StopSending {
+1702    fn encode<W: BufMut>(&self, out: &mut W) {
+1703        out.write(FrameType::StopSending); // 1 byte
+1704        out.write(self.id); // <= 8 bytes
+1705        out.write(self.error_code) // <= 8 bytes
+1706    }
+1707}
+1708
+1709#[derive(Debug, Copy, Clone, PartialEq, Eq, derive_more::Display)]
+1710#[display("{} {} seq: {sequence} id: {id}", self.get_type(), DisplayOption::new("path_id", path_id.as_ref()))]
+1711pub(crate) struct NewConnectionId {
+1712    pub(crate) path_id: Option<PathId>,
+1713    pub(crate) sequence: u64,
+1714    pub(crate) retire_prior_to: u64,
+1715    pub(crate) id: ConnectionId,
+1716    pub(crate) reset_token: ResetToken,
+1717}
+1718
+1719impl NewConnectionId {
+1720    /// Maximum size of this frame when the frame type is [`FrameType::NewConnectionId`],
+1721    pub(crate) const SIZE_BOUND: usize = {
+1722        let type_len = FrameType::NewConnectionId.size();
+1723        let seq_max_len = 8usize;
+1724        let retire_prior_to_max_len = 8usize;
+1725        let cid_len_len = 1;
+1726        let cid_len = 160;
+1727        let reset_token_len = 16;
+1728        type_len + seq_max_len + retire_prior_to_max_len + cid_len_len + cid_len + reset_token_len
+1729    };
+1730
+1731    /// Maximum size of this frame when the frame type is [`FrameType::PathNewConnectionId`],
+1732    pub(crate) const SIZE_BOUND_MULTIPATH: usize = {
+1733        let type_len = FrameType::PathNewConnectionId.size();
+1734        let path_id_len = VarInt::from_u32(u32::MAX).size();
+1735        let seq_max_len = 8usize;
+1736        let retire_prior_to_max_len = 8usize;
+1737        let cid_len_len = 1;
+1738        let cid_len = 160;
+1739        let reset_token_len = 16;
+1740        type_len
+1741            + path_id_len
+1742            + seq_max_len
+1743            + retire_prior_to_max_len
+1744            + cid_len_len
+1745            + cid_len
+1746            + reset_token_len
+1747    };
+1748
+1749    const fn get_type(&self) -> FrameType {
+1750        if self.path_id.is_some() {
+1751            FrameType::PathNewConnectionId
+1752        } else {
+1753            FrameType::NewConnectionId
+1754        }
+1755    }
+1756
+1757    /// Returns the maximum encoded size on the wire.
+1758    ///
+1759    /// This is a rough upper estimate, does not squeeze every last byte out.
+1760    pub(crate) const fn size_bound(path_new_cid: bool, cid_len: usize) -> usize {
+1761        let upper_bound = match path_new_cid {
+1762            true => Self::SIZE_BOUND_MULTIPATH,
+1763            false => Self::SIZE_BOUND,
+1764        };
+1765        // instead of using the maximum cid len, use the provided one
+1766        upper_bound - 160 + cid_len
+1767    }
+1768
+1769    fn read<R: Buf>(bytes: &mut R, read_path: bool) -> Result<Self, IterErr> {
+1770        let path_id = if read_path { Some(bytes.get()?) } else { None };
+1771        let sequence = bytes.get_var()?;
+1772        let retire_prior_to = bytes.get_var()?;
+1773        if retire_prior_to > sequence {
+1774            return Err(IterErr::Malformed);
+1775        }
+1776        let length = bytes.get::<u8>()? as usize;
+1777        if length > MAX_CID_SIZE || length == 0 {
+1778            return Err(IterErr::Malformed);
+1779        }
+1780        if length > bytes.remaining() {
+1781            return Err(IterErr::UnexpectedEnd);
+1782        }
+1783        let mut stage = [0; MAX_CID_SIZE];
+1784        bytes.copy_to_slice(&mut stage[0..length]);
+1785        let id = ConnectionId::new(&stage[..length]);
+1786        if bytes.remaining() < 16 {
+1787            return Err(IterErr::UnexpectedEnd);
+1788        }
+1789        let mut reset_token = [0; RESET_TOKEN_SIZE];
+1790        bytes.copy_to_slice(&mut reset_token);
+1791        Ok(Self {
+1792            path_id,
+1793            sequence,
+1794            retire_prior_to,
+1795            id,
+1796            reset_token: reset_token.into(),
+1797        })
+1798    }
+1799
+1800    pub(crate) fn issued(&self) -> crate::shared::IssuedCid {
+1801        crate::shared::IssuedCid {
+1802            path_id: self.path_id.unwrap_or_default(),
+1803            sequence: self.sequence,
+1804            id: self.id,
+1805            reset_token: self.reset_token,
+1806        }
+1807    }
+1808}
+1809
+1810impl Encodable for NewConnectionId {
+1811    fn encode<W: BufMut>(&self, out: &mut W) {
+1812        out.write(self.get_type());
+1813        if let Some(id) = self.path_id {
+1814            out.write(id);
+1815        }
+1816        out.write_var(self.sequence);
+1817        out.write_var(self.retire_prior_to);
+1818        out.write(self.id.len() as u8);
+1819        out.put_slice(&self.id);
+1820        out.put_slice(&self.reset_token);
+1821    }
+1822}
+1823
+1824impl FrameStruct for NewConnectionId {
+1825    const SIZE_BOUND: usize = 1 + 8 + 8 + 1 + MAX_CID_SIZE + RESET_TOKEN_SIZE;
+1826}
+1827
+1828/// An unreliable datagram
+1829#[derive(Debug, Clone, derive_more::Display)]
+1830#[display("DATAGRAM len: {}", data.len())]
+1831pub struct Datagram {
+1832    /// Payload
+1833    pub data: Bytes,
+1834}
+1835
+1836impl FrameStruct for Datagram {
+1837    const SIZE_BOUND: usize = 1 + 8;
+1838}
+1839
+1840impl Datagram {
+1841    pub(crate) fn size(&self, length: bool) -> usize {
+1842        1 + if length {
+1843            VarInt::from_u64(self.data.len() as u64).unwrap().size()
+1844        } else {
+1845            0
+1846        } + self.data.len()
+1847    }
+1848
+1849    const fn get_type(&self) -> FrameType {
+1850        FrameType::Datagram(DatagramInfo(*DatagramInfo::VALUES.start() as u8))
+1851    }
+1852}
+1853
+1854impl Encodable for Datagram {
+1855    fn encode<B: BufMut>(&self, out: &mut B) {
+1856        // A datagram is encoded only after this is verified.
+1857        const ENCODE_LEN: bool = true;
+1858        out.write(FrameType::Datagram(DatagramInfo(
+1859            *DatagramInfo::VALUES.start() as u8 | u8::from(ENCODE_LEN),
+1860        ))); // 1 byte
+1861        // Safe to unwrap because we check length sanity before queueing datagrams
+1862        out.write(VarInt::from_u64(self.data.len() as u64).unwrap()); // <= 8 bytes
+1863        out.put_slice(&self.data);
 1864    }
-1865    .size();
+1865}
 1866
-1867    pub(crate) const fn new(round: VarInt, (ip, port): (IpAddr, u16)) -> Self {
-1868        Self { round, ip, port }
-1869    }
-1870
-1871    /// Get the [`FrameType`] for this frame
-1872    pub(crate) const fn get_type(&self) -> FrameType {
-1873        if self.ip.is_ipv6() {
-1874            FrameType::ReachOutAtIpv6
-1875        } else {
-1876            FrameType::ReachOutAtIpv4
-1877        }
-1878    }
-1879
-1880    /// Compute the number of bytes needed to encode the frame
-1881    pub(crate) const fn size(&self) -> usize {
-1882        let type_size = self.get_type().size();
-1883        let round_bytes = self.round.size();
-1884        let ip_bytes = if self.ip.is_ipv6() { 16 } else { 4 };
-1885        let port_bytes = 2;
-1886        type_size + round_bytes + ip_bytes + port_bytes
-1887    }
-1888
-1889    /// Read the frame contents from the buffer
-1890    ///
-1891    /// Should only be called when the frame type has been identified as
-1892    /// [`FrameType::ReachOutAtIpv4`] or [`FrameType::ReachOutAtIpv6`].
-1893    pub(crate) fn read<R: Buf>(bytes: &mut R, is_ipv6: bool) -> coding::Result<Self> {
-1894        let round = bytes.get()?;
-1895        let ip = if is_ipv6 {
-1896            IpAddr::V6(bytes.get()?)
-1897        } else {
-1898            IpAddr::V4(bytes.get()?)
-1899        };
-1900        let port = bytes.get()?;
-1901        Ok(Self { round, ip, port })
-1902    }
-1903
-1904    /// Give the [`SocketAddr`] encoded in the frame
-1905    pub(crate) fn socket_addr(&self) -> SocketAddr {
-1906        (self.ip, self.port).into()
-1907    }
-1908}
-1909
-1910impl Encodable for ReachOut {
-1911    fn encode<W: BufMut>(&self, buf: &mut W) {
-1912        buf.write(self.get_type());
-1913        buf.write(self.round);
-1914        match self.ip {
-1915            IpAddr::V4(ipv4_addr) => {
-1916                buf.write(ipv4_addr);
-1917            }
-1918            IpAddr::V6(ipv6_addr) => {
-1919                buf.write(ipv6_addr);
-1920            }
-1921        }
-1922        buf.write::<u16>(self.port);
+1867#[derive(Debug, Copy, Clone, PartialEq, Eq, derive_more::Display)]
+1868#[display("ACK_FREQUENCY max_ack_delay: {}µs", request_max_ack_delay.0)]
+1869pub(crate) struct AckFrequency {
+1870    pub(crate) sequence: VarInt,
+1871    pub(crate) ack_eliciting_threshold: VarInt,
+1872    pub(crate) request_max_ack_delay: VarInt,
+1873    pub(crate) reordering_threshold: VarInt,
+1874}
+1875
+1876impl AckFrequency {
+1877    const fn get_type(&self) -> FrameType {
+1878        FrameType::AckFrequency
+1879    }
+1880}
+1881
+1882impl Encodable for AckFrequency {
+1883    fn encode<W: BufMut>(&self, buf: &mut W) {
+1884        buf.write(FrameType::AckFrequency);
+1885        buf.write(self.sequence);
+1886        buf.write(self.ack_eliciting_threshold);
+1887        buf.write(self.request_max_ack_delay);
+1888        buf.write(self.reordering_threshold);
+1889    }
+1890}
+1891
+1892/* Address Discovery https://datatracker.ietf.org/doc/draft-seemann-quic-address-discovery/ */
+1893
+1894/// Conjunction of the information contained in the address discovery frames
+1895/// ([`FrameType::ObservedIpv4Addr`], [`FrameType::ObservedIpv6Addr`]).
+1896#[derive(Debug, PartialEq, Eq, Clone, derive_more::Display)]
+1897#[display("{} seq_no: {seq_no} addr: {}", self.get_type(), self.socket_addr())]
+1898pub(crate) struct ObservedAddr {
+1899    /// Monotonically increasing integer within the same connection.
+1900    pub(crate) seq_no: VarInt,
+1901    /// Reported observed address.
+1902    pub(crate) ip: IpAddr,
+1903    /// Reported observed port.
+1904    pub(crate) port: u16,
+1905}
+1906
+1907impl ObservedAddr {
+1908    pub(crate) fn new<N: Into<VarInt>>(remote: std::net::SocketAddr, seq_no: N) -> Self {
+1909        Self {
+1910            ip: remote.ip(),
+1911            port: remote.port(),
+1912            seq_no: seq_no.into(),
+1913        }
+1914    }
+1915
+1916    /// Get the [`FrameType`] for this frame.
+1917    const fn get_type(&self) -> FrameType {
+1918        if self.ip.is_ipv6() {
+1919            FrameType::ObservedIpv6Addr
+1920        } else {
+1921            FrameType::ObservedIpv4Addr
+1922        }
 1923    }
-1924}
-1925
-1926/// Frame signaling an address is no longer being advertised
-1927#[derive(Debug, PartialEq, Eq, Copy, Clone, PartialOrd, Ord)]
-1928// TODO(@divma): remove
-1929#[allow(dead_code)]
-1930pub(crate) struct RemoveAddress {
-1931    /// The sequence number of the address advertisement to be removed
-1932    pub(crate) seq_no: VarInt,
-1933}
-1934
-1935// TODO(@divma): remove
-1936#[allow(dead_code)]
-1937impl RemoveAddress {
-1938    /// [`FrameType`] of this frame
-1939    pub(crate) const TYPE: FrameType = FrameType::RemoveAddress;
-1940
-1941    /// Smallest number of bytes this type of frame is guaranteed to fit within
-1942    pub(crate) const SIZE_BOUND: usize = Self::new(VarInt::MAX).size();
-1943
-1944    pub(crate) const fn new(seq_no: VarInt) -> Self {
-1945        Self { seq_no }
-1946    }
-1947
-1948    /// Compute the number of bytes needed to encode the frame
-1949    pub(crate) const fn size(&self) -> usize {
-1950        let type_size = Self::TYPE.size();
-1951        let seq_no_bytes = self.seq_no.size();
-1952        type_size + seq_no_bytes
-1953    }
+1924
+1925    /// Compute the number of bytes needed to encode the frame.
+1926    pub(crate) fn size(&self) -> usize {
+1927        let type_size = self.get_type().size();
+1928        let req_id_bytes = self.seq_no.size();
+1929        let ip_bytes = if self.ip.is_ipv6() { 16 } else { 4 };
+1930        let port_bytes = 2;
+1931        type_size + req_id_bytes + ip_bytes + port_bytes
+1932    }
+1933
+1934    /// Reads the frame contents from the buffer.
+1935    ///
+1936    /// Should only be called when the frame type has been identified as
+1937    /// [`FrameType::ObservedIpv4Addr`] or [`FrameType::ObservedIpv6Addr`].
+1938    pub(crate) fn read<R: Buf>(bytes: &mut R, is_ipv6: bool) -> coding::Result<Self> {
+1939        let seq_no = bytes.get()?;
+1940        let ip = if is_ipv6 {
+1941            IpAddr::V6(bytes.get()?)
+1942        } else {
+1943            IpAddr::V4(bytes.get()?)
+1944        };
+1945        let port = bytes.get()?;
+1946        Ok(Self { seq_no, ip, port })
+1947    }
+1948
+1949    /// Gives the [`SocketAddr`] reported in the frame.
+1950    pub(crate) fn socket_addr(&self) -> SocketAddr {
+1951        (self.ip, self.port).into()
+1952    }
+1953}
 1954
-1955    /// Read the frame contents from the buffer
-1956    ///
-1957    /// Should only be called when the frame type has been identified as
-1958    /// [`FrameType::RemoveAddress`].
-1959    pub(crate) fn read<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
-1960        Ok(Self {
-1961            seq_no: bytes.get()?,
-1962        })
-1963    }
-1964}
-1965
-1966impl Encodable for RemoveAddress {
-1967    fn encode<W: BufMut>(&self, buf: &mut W) {
-1968        buf.write(Self::TYPE);
-1969        buf.write(self.seq_no);
-1970    }
-1971}
+1955impl Encodable for ObservedAddr {
+1956    fn encode<W: BufMut>(&self, buf: &mut W) {
+1957        buf.write(self.get_type());
+1958        buf.write(self.seq_no);
+1959        match self.ip {
+1960            IpAddr::V4(ipv4_addr) => {
+1961                buf.write(ipv4_addr);
+1962            }
+1963            IpAddr::V6(ipv6_addr) => {
+1964                buf.write(ipv6_addr);
+1965            }
+1966        }
+1967        buf.write::<u16>(self.port);
+1968    }
+1969}
+1970
+1971/* Multipath <https://datatracker.ietf.org/doc/draft-ietf-quic-multipath/> */
 1972
-1973#[cfg(test)]
-1974mod test {
-1975    use super::*;
-1976    use crate::coding::Encodable;
-1977    use assert_matches::assert_matches;
-1978
-1979    #[test]
-1980    fn frame_type() {
-1981        assert_eq!(
-1982            FrameType::try_from(FrameType::Padding.to_u64()),
-1983            Ok(FrameType::Padding),
-1984        );
-1985
-1986        assert_eq!(
-1987            FrameType::try_from(FrameType::Datagram(DatagramInfo(0x30)).to_u64()),
-1988            Ok(FrameType::Datagram(DatagramInfo(0x30))),
-1989        );
-1990
-1991        assert_eq!(
-1992            FrameType::try_from(FrameType::Stream(StreamInfo(0x08)).to_u64()),
-1993            Ok(FrameType::Stream(StreamInfo(0x08))),
-1994        );
-1995    }
-1996
-1997    #[track_caller]
-1998    fn frames(buf: Vec<u8>) -> Vec<Frame> {
-1999        Iter::new(Bytes::from(buf))
-2000            .unwrap()
-2001            .collect::<Result<Vec<_>, _>>()
-2002            .unwrap()
-2003    }
+1973#[derive(Debug, PartialEq, Eq, derive_more::Display)]
+1974#[display("PATH_ABANDON path_id: {path_id}")]
+1975pub(crate) struct PathAbandon {
+1976    pub(crate) path_id: PathId,
+1977    pub(crate) error_code: TransportErrorCode,
+1978}
+1979
+1980impl PathAbandon {
+1981    pub(crate) const SIZE_BOUND: usize = FrameType::PathAbandon.size() + 8 + 8;
+1982
+1983    const fn get_type(&self) -> FrameType {
+1984        FrameType::PathAbandon
+1985    }
+1986}
+1987
+1988impl Encodable for PathAbandon {
+1989    fn encode<W: BufMut>(&self, buf: &mut W) {
+1990        buf.write(FrameType::PathAbandon);
+1991        buf.write(self.path_id);
+1992        buf.write(self.error_code);
+1993    }
+1994}
+1995
+1996impl Decodable for PathAbandon {
+1997    fn decode<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
+1998        Ok(Self {
+1999            path_id: bytes.get()?,
+2000            error_code: bytes.get()?,
+2001        })
+2002    }
+2003}
 2004
-2005    #[test]
-2006    fn ack_coding() {
-2007        const PACKETS: &[u64] = &[1, 2, 3, 5, 10, 11, 14];
-2008        let mut ranges = ArrayRangeSet::new();
-2009        for &packet in PACKETS {
-2010            ranges.insert(packet..packet + 1);
-2011        }
-2012        let mut buf = Vec::new();
-2013        const ECN: EcnCounts = EcnCounts {
-2014            ect0: 42,
-2015            ect1: 24,
-2016            ce: 12,
-2017        };
-2018        Ack::encoder(42, &ranges, Some(&ECN)).encode(&mut buf);
-2019        let frames = frames(buf);
-2020        assert_eq!(frames.len(), 1);
-2021        match frames[0] {
-2022            Frame::Ack(ref ack) => {
-2023                let mut packets = ack.iter().flatten().collect::<Vec<_>>();
-2024                packets.sort_unstable();
-2025                assert_eq!(&packets[..], PACKETS);
-2026                assert_eq!(ack.ecn, Some(ECN));
-2027            }
-2028            ref x => panic!("incorrect frame {x:?}"),
-2029        }
-2030    }
-2031
-2032    #[test]
-2033    #[allow(clippy::range_plus_one)]
-2034    fn path_ack_coding() {
-2035        const PACKETS: &[u64] = &[1, 2, 3, 5, 10, 11, 14];
-2036        let mut ranges = ArrayRangeSet::new();
-2037        for &packet in PACKETS {
-2038            ranges.insert(packet..packet + 1);
-2039        }
-2040        let mut buf = Vec::new();
-2041        const ECN: EcnCounts = EcnCounts {
-2042            ect0: 42,
-2043            ect1: 24,
-2044            ce: 12,
-2045        };
-2046        const PATH_ID: PathId = PathId::MAX;
-2047        PathAck::encoder(PATH_ID, 42, &ranges, Some(&ECN)).encode(&mut buf);
-2048        let frames = frames(buf);
-2049        assert_eq!(frames.len(), 1);
-2050        match frames[0] {
-2051            Frame::PathAck(ref ack) => {
-2052                assert_eq!(ack.path_id, PATH_ID);
-2053                let mut packets = ack.into_iter().flatten().collect::<Vec<_>>();
-2054                packets.sort_unstable();
-2055                assert_eq!(&packets[..], PACKETS);
-2056                assert_eq!(ack.ecn, Some(ECN));
-2057            }
-2058            ref x => panic!("incorrect frame {x:?}"),
-2059        }
-2060    }
-2061
-2062    #[test]
-2063    fn ack_frequency_coding() {
-2064        let mut buf = Vec::new();
-2065        let original = AckFrequency {
-2066            sequence: VarInt(42),
-2067            ack_eliciting_threshold: VarInt(20),
-2068            request_max_ack_delay: VarInt(50_000),
-2069            reordering_threshold: VarInt(1),
-2070        };
-2071        original.encode(&mut buf);
-2072        let frames = frames(buf);
-2073        assert_eq!(frames.len(), 1);
-2074        match &frames[0] {
-2075            Frame::AckFrequency(decoded) => assert_eq!(decoded, &original),
-2076            x => panic!("incorrect frame {x:?}"),
-2077        }
-2078    }
-2079
-2080    #[test]
-2081    fn immediate_ack_coding() {
-2082        let mut buf = Vec::new();
-2083        FrameType::ImmediateAck.encode(&mut buf);
-2084        let frames = frames(buf);
-2085        assert_eq!(frames.len(), 1);
-2086        assert_matches!(&frames[0], Frame::ImmediateAck);
-2087    }
-2088
-2089    /// Test that encoding and decoding [`ObservedAddr`] produces the same result.
-2090    #[test]
-2091    fn test_observed_addr_roundrip() {
-2092        let observed_addr = ObservedAddr {
-2093            seq_no: VarInt(42),
-2094            ip: std::net::Ipv4Addr::LOCALHOST.into(),
-2095            port: 4242,
-2096        };
-2097        let mut buf = Vec::with_capacity(observed_addr.size());
-2098        observed_addr.encode(&mut buf);
-2099
-2100        assert_eq!(
-2101            observed_addr.size(),
-2102            buf.len(),
-2103            "expected written bytes and actual size differ"
-2104        );
-2105
-2106        let mut decoded = frames(buf);
-2107        assert_eq!(decoded.len(), 1);
-2108        match decoded.pop().expect("non empty") {
-2109            Frame::ObservedAddr(decoded) => assert_eq!(decoded, observed_addr),
-2110            x => panic!("incorrect frame {x:?}"),
-2111        }
-2112    }
-2113
-2114    #[test]
-2115    fn test_path_abandon_roundtrip() {
-2116        let abandon = PathAbandon {
-2117            path_id: PathId(42),
-2118            error_code: TransportErrorCode::NO_ERROR,
-2119        };
-2120        let mut buf = Vec::new();
-2121        abandon.encode(&mut buf);
-2122
-2123        let mut decoded = frames(buf);
-2124        assert_eq!(decoded.len(), 1);
-2125        match decoded.pop().expect("non empty") {
-2126            Frame::PathAbandon(decoded) => assert_eq!(decoded, abandon),
-2127            x => panic!("incorrect frame {x:?}"),
-2128        }
-2129    }
-2130
-2131    #[test]
-2132    fn test_path_status_available_roundtrip() {
-2133        let path_status_available = PathStatusAvailable {
-2134            path_id: PathId(42),
-2135            status_seq_no: VarInt(73),
-2136        };
-2137        let mut buf = Vec::new();
-2138        path_status_available.encode(&mut buf);
-2139
-2140        let mut decoded = frames(buf);
-2141        assert_eq!(decoded.len(), 1);
-2142        match decoded.pop().expect("non empty") {
-2143            Frame::PathStatusAvailable(decoded) => assert_eq!(decoded, path_status_available),
-2144            x => panic!("incorrect frame {x:?}"),
-2145        }
-2146    }
-2147
-2148    #[test]
-2149    fn test_path_status_backup_roundtrip() {
-2150        let path_status_backup = PathStatusBackup {
-2151            path_id: PathId(42),
-2152            status_seq_no: VarInt(73),
-2153        };
-2154        let mut buf = Vec::new();
-2155        path_status_backup.encode(&mut buf);
-2156
-2157        let mut decoded = frames(buf);
-2158        assert_eq!(decoded.len(), 1);
-2159        match decoded.pop().expect("non empty") {
-2160            Frame::PathStatusBackup(decoded) => assert_eq!(decoded, path_status_backup),
-2161            x => panic!("incorrect frame {x:?}"),
-2162        }
-2163    }
-2164
-2165    #[test]
-2166    fn test_path_new_connection_id_roundtrip() {
-2167        let cid = NewConnectionId {
-2168            path_id: Some(PathId(22)),
-2169            sequence: 31,
-2170            retire_prior_to: 13,
-2171            id: ConnectionId::new(&[0xAB; 8]),
-2172            reset_token: ResetToken::from([0xCD; crate::RESET_TOKEN_SIZE]),
-2173        };
-2174        let mut buf = Vec::new();
-2175        cid.encode(&mut buf);
-2176
-2177        let mut decoded = frames(buf);
-2178        assert_eq!(decoded.len(), 1);
-2179        match decoded.pop().expect("non empty") {
-2180            Frame::NewConnectionId(decoded) => assert_eq!(decoded, cid),
-2181            x => panic!("incorrect frame {x:?}"),
-2182        }
-2183    }
-2184
-2185    #[test]
-2186    fn test_path_retire_connection_id_roundtrip() {
-2187        let retire_cid = RetireConnectionId {
-2188            path_id: Some(PathId(22)),
-2189            sequence: 31,
-2190        };
-2191        let mut buf = Vec::new();
-2192        retire_cid.encode(&mut buf);
-2193
-2194        let mut decoded = frames(buf);
-2195        assert_eq!(decoded.len(), 1);
-2196        match decoded.pop().expect("non empty") {
-2197            Frame::RetireConnectionId(decoded) => assert_eq!(decoded, retire_cid),
-2198            x => panic!("incorrect frame {x:?}"),
-2199        }
-2200    }
-2201
-2202    #[test]
-2203    fn test_paths_blocked_path_cids_blocked_roundtrip() {
-2204        let mut buf = Vec::new();
+2005#[derive(Debug, PartialEq, Eq, derive_more::Display)]
+2006#[display("PATH_STATUS_AVAILABLE path_id: {path_id} seq_no: {status_seq_no}")]
+2007pub(crate) struct PathStatusAvailable {
+2008    pub(crate) path_id: PathId,
+2009    pub(crate) status_seq_no: VarInt,
+2010}
+2011
+2012impl PathStatusAvailable {
+2013    const TYPE: FrameType = FrameType::PathStatusAvailable;
+2014    pub(crate) const SIZE_BOUND: usize = FrameType::PathStatusAvailable.size() + 8 + 8;
+2015
+2016    const fn get_type(&self) -> FrameType {
+2017        FrameType::PathStatusAvailable
+2018    }
+2019}
+2020
+2021impl Encodable for PathStatusAvailable {
+2022    fn encode<W: BufMut>(&self, buf: &mut W) {
+2023        buf.write(Self::TYPE);
+2024        buf.write(self.path_id);
+2025        buf.write(self.status_seq_no);
+2026    }
+2027}
+2028
+2029impl Decodable for PathStatusAvailable {
+2030    fn decode<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
+2031        Ok(Self {
+2032            path_id: bytes.get()?,
+2033            status_seq_no: bytes.get()?,
+2034        })
+2035    }
+2036}
+2037
+2038#[derive(Debug, PartialEq, Eq, derive_more::Display)]
+2039#[display("PATH_STATUS_BACKUP path_id: {path_id} seq_no: {status_seq_no}")]
+2040pub(crate) struct PathStatusBackup {
+2041    pub(crate) path_id: PathId,
+2042    pub(crate) status_seq_no: VarInt,
+2043}
+2044
+2045impl PathStatusBackup {
+2046    const TYPE: FrameType = FrameType::PathStatusBackup;
+2047
+2048    const fn get_type(&self) -> FrameType {
+2049        FrameType::PathStatusBackup
+2050    }
+2051}
+2052
+2053impl Encodable for PathStatusBackup {
+2054    fn encode<W: BufMut>(&self, buf: &mut W) {
+2055        buf.write(Self::TYPE);
+2056        buf.write(self.path_id);
+2057        buf.write(self.status_seq_no);
+2058    }
+2059}
+2060
+2061impl Decodable for PathStatusBackup {
+2062    fn decode<R: Buf>(bytes: &mut R) -> coding::Result<Self> {
+2063        Ok(Self {
+2064            path_id: bytes.get()?,
+2065            status_seq_no: bytes.get()?,
+2066        })
+2067    }
+2068}
+2069
+2070/* Nat traversal frames */
+2071
+2072/// Conjunction of the information contained in the add address frames
+2073/// ([`FrameType::AddIpv4Address`], [`FrameType::AddIpv6Address`]).
+2074#[derive(Debug, PartialEq, Eq, Copy, Clone, PartialOrd, Ord, derive_more::Display)]
+2075#[display("{} seq_no: {seq_no} addr: {}", self.get_type(), self.socket_addr())]
+2076pub(crate) struct AddAddress {
+2077    /// Monotonically increasing integer within the same connection
+2078    // TODO(@divma): both assumed, the draft has no mention of this but it's standard
+2079    pub(crate) seq_no: VarInt,
+2080    /// Address to include in the known set
+2081    pub(crate) ip: IpAddr,
+2082    /// Port to use with this address
+2083    pub(crate) port: u16,
+2084}
+2085
+2086// TODO(@divma): remove
+2087#[allow(dead_code)]
+2088impl AddAddress {
+2089    /// Smallest number of bytes this type of frame is guaranteed to fit within.
+2090    pub(crate) const SIZE_BOUND: usize = Self {
+2091        ip: IpAddr::V6(std::net::Ipv6Addr::LOCALHOST),
+2092        port: u16::MAX,
+2093        seq_no: VarInt::MAX,
+2094    }
+2095    .size();
+2096
+2097    pub(crate) const fn new((ip, port): (IpAddr, u16), seq_no: VarInt) -> Self {
+2098        Self { ip, port, seq_no }
+2099    }
+2100
+2101    /// Get the [`FrameType`] for this frame.
+2102    const fn get_type(&self) -> FrameType {
+2103        if self.ip.is_ipv6() {
+2104            FrameType::AddIpv6Address
+2105        } else {
+2106            FrameType::AddIpv4Address
+2107        }
+2108    }
+2109
+2110    /// Compute the number of bytes needed to encode the frame
+2111    pub(crate) const fn size(&self) -> usize {
+2112        let type_size = self.get_type().size();
+2113        let seq_no_bytes = self.seq_no.size();
+2114        let ip_bytes = if self.ip.is_ipv6() { 16 } else { 4 };
+2115        let port_bytes = 2;
+2116        type_size + seq_no_bytes + ip_bytes + port_bytes
+2117    }
+2118
+2119    /// Read the frame contents from the buffer
+2120    ///
+2121    /// Should only be called when the frame type has been identified as
+2122    /// [`FrameType::AddIpv4Address`] or [`FrameType::AddIpv6Address`].
+2123    pub(crate) fn read<R: Buf>(bytes: &mut R, is_ipv6: bool) -> coding::Result<Self> {
+2124        let seq_no = bytes.get()?;
+2125        let ip = if is_ipv6 {
+2126            IpAddr::V6(bytes.get()?)
+2127        } else {
+2128            IpAddr::V4(bytes.get()?)
+2129        };
+2130        let port = bytes.get()?;
+2131        Ok(Self { seq_no, ip, port })
+2132    }
+2133
+2134    /// Give the [`SocketAddr`] encoded in the frame
+2135    pub(crate) fn socket_addr(&self) -> SocketAddr {
+2136        self.ip_port().into()
+2137    }
+2138
+2139    pub(crate) fn ip_port(&self) -> (IpAddr, u16) {
+2140        (self.ip, self.port)
+2141    }
+2142}
+2143
+2144impl Encodable for AddAddress {
+2145    fn encode<W: BufMut>(&self, buf: &mut W) {
+2146        buf.write(self.get_type());
+2147        buf.write(self.seq_no);
+2148        match self.ip {
+2149            IpAddr::V4(ipv4_addr) => {
+2150                buf.write(ipv4_addr);
+2151            }
+2152            IpAddr::V6(ipv6_addr) => {
+2153                buf.write(ipv6_addr);
+2154            }
+2155        }
+2156        buf.write::<u16>(self.port);
+2157    }
+2158}
+2159
+2160/// Conjunction of the information contained in the reach out frames
+2161/// ([`FrameType::ReachOutAtIpv4`], [`FrameType::ReachOutAtIpv6`])
+2162#[derive(Debug, PartialEq, Eq, Clone, derive_more::Display)]
+2163#[display("REACH_OUT round: {round} local_addr: {}", self.socket_addr())]
+2164pub(crate) struct ReachOut {
+2165    /// The sequence number of the NAT Traversal attempts
+2166    pub(crate) round: VarInt,
+2167    /// Address to use
+2168    pub(crate) ip: IpAddr,
+2169    /// Port to use with this address
+2170    pub(crate) port: u16,
+2171}
+2172
+2173// TODO(@divma): remove
+2174#[allow(dead_code)]
+2175impl ReachOut {
+2176    /// Smallest number of bytes this type of frame is guaranteed to fit within
+2177    pub(crate) const SIZE_BOUND: usize = Self {
+2178        round: VarInt::MAX,
+2179        ip: IpAddr::V6(std::net::Ipv6Addr::LOCALHOST),
+2180        port: u16::MAX,
+2181    }
+2182    .size();
+2183
+2184    pub(crate) const fn new(round: VarInt, (ip, port): (IpAddr, u16)) -> Self {
+2185        Self { round, ip, port }
+2186    }
+2187
+2188    /// Get the [`FrameType`] for this frame
+2189    pub(crate) const fn get_type(&self) -> FrameType {
+2190        if self.ip.is_ipv6() {
+2191            FrameType::ReachOutAtIpv6
+2192        } else {
+2193            FrameType::ReachOutAtIpv4
+2194        }
+2195    }
+2196
+2197    /// Compute the number of bytes needed to encode the frame
+2198    pub(crate) const fn size(&self) -> usize {
+2199        let type_size = self.get_type().size();
+2200        let round_bytes = self.round.size();
+2201        let ip_bytes = if self.ip.is_ipv6() { 16 } else { 4 };
+2202        let port_bytes = 2;
+2203        type_size + round_bytes + ip_bytes + port_bytes
+2204    }
 2205
-2206        let frame0 = PathsBlocked(PathId(22));
-2207        frame0.encode(&mut buf);
-2208        let frame1 = PathCidsBlocked {
-2209            path_id: PathId(23),
-2210            next_seq: VarInt(32),
-2211        };
-2212        frame1.encode(&mut buf);
-2213
-2214        let mut decoded = frames(buf);
-2215        assert_eq!(decoded.len(), 2);
-2216        match decoded.pop().expect("non empty") {
-2217            Frame::PathCidsBlocked(decoded) => assert_eq!(decoded, frame1),
-2218            x => panic!("incorrect frame {x:?}"),
-2219        }
-2220        match decoded.pop().expect("non empty") {
-2221            Frame::PathsBlocked(decoded) => assert_eq!(decoded, frame0),
-2222            x => panic!("incorrect frame {x:?}"),
-2223        }
+2206    /// Read the frame contents from the buffer
+2207    ///
+2208    /// Should only be called when the frame type has been identified as
+2209    /// [`FrameType::ReachOutAtIpv4`] or [`FrameType::ReachOutAtIpv6`].
+2210    pub(crate) fn read<R: Buf>(bytes: &mut R, is_ipv6: bool) -> coding::Result<Self> {
+2211        let round = bytes.get()?;
+2212        let ip = if is_ipv6 {
+2213            IpAddr::V6(bytes.get()?)
+2214        } else {
+2215            IpAddr::V4(bytes.get()?)
+2216        };
+2217        let port = bytes.get()?;
+2218        Ok(Self { round, ip, port })
+2219    }
+2220
+2221    /// Give the [`SocketAddr`] encoded in the frame
+2222    pub(crate) fn socket_addr(&self) -> SocketAddr {
+2223        (self.ip, self.port).into()
 2224    }
-2225
-2226    /// Test that encoding and decoding [`AddAddress`] produces the same result
-2227    #[test]
-2228    fn test_add_address_roundrip() {
-2229        let add_address = AddAddress {
-2230            seq_no: VarInt(42),
-2231            ip: std::net::Ipv4Addr::LOCALHOST.into(),
-2232            port: 4242,
-2233        };
-2234        let mut buf = Vec::with_capacity(add_address.size());
-2235        add_address.encode(&mut buf);
-2236
-2237        assert_eq!(
-2238            add_address.size(),
-2239            buf.len(),
-2240            "expected written bytes and actual size differ"
-2241        );
+2225}
+2226
+2227impl Encodable for ReachOut {
+2228    fn encode<W: BufMut>(&self, buf: &mut W) {
+2229        buf.write(self.get_type());
+2230        buf.write(self.round);
+2231        match self.ip {
+2232            IpAddr::V4(ipv4_addr) => {
+2233                buf.write(ipv4_addr);
+2234            }
+2235            IpAddr::V6(ipv6_addr) => {
+2236                buf.write(ipv6_addr);
+2237            }
+2238        }
+2239        buf.write::<u16>(self.port);
+2240    }
+2241}
 2242
-2243        let mut decoded = frames(buf);
-2244        assert_eq!(decoded.len(), 1);
-2245        match decoded.pop().expect("non empty") {
-2246            Frame::AddAddress(decoded) => assert_eq!(decoded, add_address),
-2247            x => panic!("incorrect frame {x:?}"),
-2248        }
-2249    }
+2243/// Frame signaling an address is no longer being advertised
+2244#[derive(Debug, PartialEq, Eq, Copy, Clone, PartialOrd, Ord, derive_more::Display)]
+2245#[display("REMOVE_ADDRESS seq_no: {seq_no}")]
+2246pub(crate) struct RemoveAddress {
+2247    /// The sequence number of the address advertisement to be removed
+2248    pub(crate) seq_no: VarInt,
+2249}
 2250
-2251    /// Test that encoding and decoding [`AddAddress`] produces the same result
-2252    #[test]
-2253    fn test_reach_out_roundrip() {
-2254        let reach_out = ReachOut {
-2255            round: VarInt(42),
-2256            ip: std::net::Ipv6Addr::LOCALHOST.into(),
-2257            port: 4242,
-2258        };
-2259        let mut buf = Vec::with_capacity(reach_out.size());
-2260        reach_out.encode(&mut buf);
-2261
-2262        assert_eq!(
-2263            reach_out.size(),
-2264            buf.len(),
-2265            "expected written bytes and actual size differ"
-2266        );
-2267
-2268        let mut decoded = frames(buf);
-2269        assert_eq!(decoded.len(), 1);
-2270        match decoded.pop().expect("non empty") {
-2271            Frame::ReachOut(decoded) => assert_eq!(decoded, reach_out),
-2272            x => panic!("incorrect frame {x:?}"),
-2273        }
-2274    }
-2275
-2276    /// Test that encoding and decoding [`RemoveAddress`] produces the same result
-2277    #[test]
-2278    fn test_remove_address_roundrip() {
-2279        let remove_addr = RemoveAddress::new(VarInt(10));
-2280        let mut buf = Vec::with_capacity(remove_addr.size());
-2281        remove_addr.encode(&mut buf);
-2282
-2283        assert_eq!(
-2284            remove_addr.size(),
-2285            buf.len(),
-2286            "expected written bytes and actual size differ"
-2287        );
-2288
-2289        let mut decoded = frames(buf);
-2290        assert_eq!(decoded.len(), 1);
-2291        match decoded.pop().expect("non empty") {
-2292            Frame::RemoveAddress(decoded) => assert_eq!(decoded, remove_addr),
-2293            x => panic!("incorrect frame {x:?}"),
-2294        }
-2295    }
-2296}
\ No newline at end of file +2251// TODO(@divma): remove +2252#[allow(dead_code)] +2253impl RemoveAddress { +2254 /// [`FrameType`] of this frame +2255 pub(crate) const TYPE: FrameType = FrameType::RemoveAddress; +2256 +2257 /// Smallest number of bytes this type of frame is guaranteed to fit within +2258 pub(crate) const SIZE_BOUND: usize = Self::new(VarInt::MAX).size(); +2259 +2260 pub(crate) const fn new(seq_no: VarInt) -> Self { +2261 Self { seq_no } +2262 } +2263 +2264 /// Compute the number of bytes needed to encode the frame +2265 pub(crate) const fn size(&self) -> usize { +2266 let type_size = Self::TYPE.size(); +2267 let seq_no_bytes = self.seq_no.size(); +2268 type_size + seq_no_bytes +2269 } +2270 +2271 /// Read the frame contents from the buffer +2272 /// +2273 /// Should only be called when the frame type has been identified as +2274 /// [`FrameType::RemoveAddress`]. +2275 pub(crate) fn read<R: Buf>(bytes: &mut R) -> coding::Result<Self> { +2276 Ok(Self { +2277 seq_no: bytes.get()?, +2278 }) +2279 } +2280 +2281 const fn get_type(&self) -> FrameType { +2282 FrameType::RemoveAddress +2283 } +2284} +2285 +2286impl Encodable for RemoveAddress { +2287 fn encode<W: BufMut>(&self, buf: &mut W) { +2288 buf.write(Self::TYPE); +2289 buf.write(self.seq_no); +2290 } +2291} +2292 +2293/// Helper struct for display implementations. +2294// NOTE: Due to lifetimes in fmt::Arguments it's not possible to make this a simple function that +2295// avoids allocations. +2296struct DisplayOption<T: Display> { +2297 field_name: &'static str, +2298 op: Option<T>, +2299} +2300 +2301impl<T: Display> DisplayOption<T> { +2302 fn new(field_name: &'static str, op: Option<T>) -> Self { +2303 Self { field_name, op } +2304 } +2305} +2306 +2307impl<T: Display> Display for DisplayOption<T> { +2308 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { +2309 if let Some(x) = self.op.as_ref() { +2310 write!(f, "{}: {x}", self.field_name) +2311 } else { +2312 fmt::Result::Ok(()) +2313 } +2314 } +2315} +2316 +2317#[cfg(test)] +2318mod test { +2319 use super::*; +2320 use crate::coding::Encodable; +2321 use assert_matches::assert_matches; +2322 +2323 #[test] +2324 fn frame_type() { +2325 assert_eq!( +2326 FrameType::try_from(FrameType::Padding.to_u64()), +2327 Ok(FrameType::Padding), +2328 ); +2329 +2330 assert_eq!( +2331 FrameType::try_from(FrameType::Datagram(DatagramInfo(0x30)).to_u64()), +2332 Ok(FrameType::Datagram(DatagramInfo(0x30))), +2333 ); +2334 +2335 assert_eq!( +2336 FrameType::try_from(FrameType::Stream(StreamInfo(0x08)).to_u64()), +2337 Ok(FrameType::Stream(StreamInfo(0x08))), +2338 ); +2339 } +2340 +2341 #[track_caller] +2342 fn frames(buf: Vec<u8>) -> Vec<Frame> { +2343 Iter::new(Bytes::from(buf)) +2344 .unwrap() +2345 .collect::<Result<Vec<_>, _>>() +2346 .unwrap() +2347 } +2348 +2349 #[test] +2350 fn ack_coding() { +2351 const PACKETS: &[u64] = &[1, 2, 3, 5, 10, 11, 14]; +2352 let mut ranges = ArrayRangeSet::new(); +2353 for &packet in PACKETS { +2354 ranges.insert(packet..packet + 1); +2355 } +2356 let mut buf = Vec::new(); +2357 const ECN: EcnCounts = EcnCounts { +2358 ect0: 42, +2359 ect1: 24, +2360 ce: 12, +2361 }; +2362 Ack::encoder(42, &ranges, Some(&ECN)).encode(&mut buf); +2363 let frames = frames(buf); +2364 assert_eq!(frames.len(), 1); +2365 match frames[0] { +2366 Frame::Ack(ref ack) => { +2367 let mut packets = ack.iter().flatten().collect::<Vec<_>>(); +2368 packets.sort_unstable(); +2369 assert_eq!(&packets[..], PACKETS); +2370 assert_eq!(ack.ecn, Some(ECN)); +2371 } +2372 ref x => panic!("incorrect frame {x:?}"), +2373 } +2374 } +2375 +2376 #[test] +2377 #[allow(clippy::range_plus_one)] +2378 fn path_ack_coding() { +2379 const PACKETS: &[u64] = &[1, 2, 3, 5, 10, 11, 14]; +2380 let mut ranges = ArrayRangeSet::new(); +2381 for &packet in PACKETS { +2382 ranges.insert(packet..packet + 1); +2383 } +2384 let mut buf = Vec::new(); +2385 const ECN: EcnCounts = EcnCounts { +2386 ect0: 42, +2387 ect1: 24, +2388 ce: 12, +2389 }; +2390 const PATH_ID: PathId = PathId::MAX; +2391 PathAck::encoder(PATH_ID, 42, &ranges, Some(&ECN)).encode(&mut buf); +2392 let frames = frames(buf); +2393 assert_eq!(frames.len(), 1); +2394 match frames[0] { +2395 Frame::PathAck(ref ack) => { +2396 assert_eq!(ack.path_id, PATH_ID); +2397 let mut packets = ack.into_iter().flatten().collect::<Vec<_>>(); +2398 packets.sort_unstable(); +2399 assert_eq!(&packets[..], PACKETS); +2400 assert_eq!(ack.ecn, Some(ECN)); +2401 } +2402 ref x => panic!("incorrect frame {x:?}"), +2403 } +2404 } +2405 +2406 #[test] +2407 fn ack_frequency_coding() { +2408 let mut buf = Vec::new(); +2409 let original = AckFrequency { +2410 sequence: VarInt(42), +2411 ack_eliciting_threshold: VarInt(20), +2412 request_max_ack_delay: VarInt(50_000), +2413 reordering_threshold: VarInt(1), +2414 }; +2415 original.encode(&mut buf); +2416 let frames = frames(buf); +2417 assert_eq!(frames.len(), 1); +2418 match &frames[0] { +2419 Frame::AckFrequency(decoded) => assert_eq!(decoded, &original), +2420 x => panic!("incorrect frame {x:?}"), +2421 } +2422 } +2423 +2424 #[test] +2425 fn immediate_ack_coding() { +2426 let mut buf = Vec::new(); +2427 FrameType::ImmediateAck.encode(&mut buf); +2428 let frames = frames(buf); +2429 assert_eq!(frames.len(), 1); +2430 assert_matches!(&frames[0], Frame::ImmediateAck); +2431 } +2432 +2433 /// Test that encoding and decoding [`ObservedAddr`] produces the same result. +2434 #[test] +2435 fn test_observed_addr_roundrip() { +2436 let observed_addr = ObservedAddr { +2437 seq_no: VarInt(42), +2438 ip: std::net::Ipv4Addr::LOCALHOST.into(), +2439 port: 4242, +2440 }; +2441 let mut buf = Vec::with_capacity(observed_addr.size()); +2442 observed_addr.encode(&mut buf); +2443 +2444 assert_eq!( +2445 observed_addr.size(), +2446 buf.len(), +2447 "expected written bytes and actual size differ" +2448 ); +2449 +2450 let mut decoded = frames(buf); +2451 assert_eq!(decoded.len(), 1); +2452 match decoded.pop().expect("non empty") { +2453 Frame::ObservedAddr(decoded) => assert_eq!(decoded, observed_addr), +2454 x => panic!("incorrect frame {x:?}"), +2455 } +2456 } +2457 +2458 #[test] +2459 fn test_path_abandon_roundtrip() { +2460 let abandon = PathAbandon { +2461 path_id: PathId(42), +2462 error_code: TransportErrorCode::NO_ERROR, +2463 }; +2464 let mut buf = Vec::new(); +2465 abandon.encode(&mut buf); +2466 +2467 let mut decoded = frames(buf); +2468 assert_eq!(decoded.len(), 1); +2469 match decoded.pop().expect("non empty") { +2470 Frame::PathAbandon(decoded) => assert_eq!(decoded, abandon), +2471 x => panic!("incorrect frame {x:?}"), +2472 } +2473 } +2474 +2475 #[test] +2476 fn test_path_status_available_roundtrip() { +2477 let path_status_available = PathStatusAvailable { +2478 path_id: PathId(42), +2479 status_seq_no: VarInt(73), +2480 }; +2481 let mut buf = Vec::new(); +2482 path_status_available.encode(&mut buf); +2483 +2484 let mut decoded = frames(buf); +2485 assert_eq!(decoded.len(), 1); +2486 match decoded.pop().expect("non empty") { +2487 Frame::PathStatusAvailable(decoded) => assert_eq!(decoded, path_status_available), +2488 x => panic!("incorrect frame {x:?}"), +2489 } +2490 } +2491 +2492 #[test] +2493 fn test_path_status_backup_roundtrip() { +2494 let path_status_backup = PathStatusBackup { +2495 path_id: PathId(42), +2496 status_seq_no: VarInt(73), +2497 }; +2498 let mut buf = Vec::new(); +2499 path_status_backup.encode(&mut buf); +2500 +2501 let mut decoded = frames(buf); +2502 assert_eq!(decoded.len(), 1); +2503 match decoded.pop().expect("non empty") { +2504 Frame::PathStatusBackup(decoded) => assert_eq!(decoded, path_status_backup), +2505 x => panic!("incorrect frame {x:?}"), +2506 } +2507 } +2508 +2509 #[test] +2510 fn test_path_new_connection_id_roundtrip() { +2511 let cid = NewConnectionId { +2512 path_id: Some(PathId(22)), +2513 sequence: 31, +2514 retire_prior_to: 13, +2515 id: ConnectionId::new(&[0xAB; 8]), +2516 reset_token: ResetToken::from([0xCD; crate::RESET_TOKEN_SIZE]), +2517 }; +2518 let mut buf = Vec::new(); +2519 cid.encode(&mut buf); +2520 +2521 let mut decoded = frames(buf); +2522 assert_eq!(decoded.len(), 1); +2523 match decoded.pop().expect("non empty") { +2524 Frame::NewConnectionId(decoded) => assert_eq!(decoded, cid), +2525 x => panic!("incorrect frame {x:?}"), +2526 } +2527 } +2528 +2529 #[test] +2530 fn test_path_retire_connection_id_roundtrip() { +2531 let retire_cid = RetireConnectionId { +2532 path_id: Some(PathId(22)), +2533 sequence: 31, +2534 }; +2535 let mut buf = Vec::new(); +2536 retire_cid.encode(&mut buf); +2537 +2538 let mut decoded = frames(buf); +2539 assert_eq!(decoded.len(), 1); +2540 match decoded.pop().expect("non empty") { +2541 Frame::RetireConnectionId(decoded) => assert_eq!(decoded, retire_cid), +2542 x => panic!("incorrect frame {x:?}"), +2543 } +2544 } +2545 +2546 #[test] +2547 fn test_paths_blocked_path_cids_blocked_roundtrip() { +2548 let mut buf = Vec::new(); +2549 +2550 let frame0 = PathsBlocked(PathId(22)); +2551 frame0.encode(&mut buf); +2552 let frame1 = PathCidsBlocked { +2553 path_id: PathId(23), +2554 next_seq: VarInt(32), +2555 }; +2556 frame1.encode(&mut buf); +2557 +2558 let mut decoded = frames(buf); +2559 assert_eq!(decoded.len(), 2); +2560 match decoded.pop().expect("non empty") { +2561 Frame::PathCidsBlocked(decoded) => assert_eq!(decoded, frame1), +2562 x => panic!("incorrect frame {x:?}"), +2563 } +2564 match decoded.pop().expect("non empty") { +2565 Frame::PathsBlocked(decoded) => assert_eq!(decoded, frame0), +2566 x => panic!("incorrect frame {x:?}"), +2567 } +2568 } +2569 +2570 /// Test that encoding and decoding [`AddAddress`] produces the same result +2571 #[test] +2572 fn test_add_address_roundrip() { +2573 let add_address = AddAddress { +2574 seq_no: VarInt(42), +2575 ip: std::net::Ipv4Addr::LOCALHOST.into(), +2576 port: 4242, +2577 }; +2578 let mut buf = Vec::with_capacity(add_address.size()); +2579 add_address.encode(&mut buf); +2580 +2581 assert_eq!( +2582 add_address.size(), +2583 buf.len(), +2584 "expected written bytes and actual size differ" +2585 ); +2586 +2587 let mut decoded = frames(buf); +2588 assert_eq!(decoded.len(), 1); +2589 match decoded.pop().expect("non empty") { +2590 Frame::AddAddress(decoded) => assert_eq!(decoded, add_address), +2591 x => panic!("incorrect frame {x:?}"), +2592 } +2593 } +2594 +2595 /// Test that encoding and decoding [`AddAddress`] produces the same result +2596 #[test] +2597 fn test_reach_out_roundrip() { +2598 let reach_out = ReachOut { +2599 round: VarInt(42), +2600 ip: std::net::Ipv6Addr::LOCALHOST.into(), +2601 port: 4242, +2602 }; +2603 let mut buf = Vec::with_capacity(reach_out.size()); +2604 reach_out.encode(&mut buf); +2605 +2606 assert_eq!( +2607 reach_out.size(), +2608 buf.len(), +2609 "expected written bytes and actual size differ" +2610 ); +2611 +2612 let mut decoded = frames(buf); +2613 assert_eq!(decoded.len(), 1); +2614 match decoded.pop().expect("non empty") { +2615 Frame::ReachOut(decoded) => assert_eq!(decoded, reach_out), +2616 x => panic!("incorrect frame {x:?}"), +2617 } +2618 } +2619 +2620 /// Test that encoding and decoding [`RemoveAddress`] produces the same result +2621 #[test] +2622 fn test_remove_address_roundrip() { +2623 let remove_addr = RemoveAddress::new(VarInt(10)); +2624 let mut buf = Vec::with_capacity(remove_addr.size()); +2625 remove_addr.encode(&mut buf); +2626 +2627 assert_eq!( +2628 remove_addr.size(), +2629 buf.len(), +2630 "expected written bytes and actual size differ" +2631 ); +2632 +2633 let mut decoded = frames(buf); +2634 assert_eq!(decoded.len(), 1); +2635 match decoded.pop().expect("non empty") { +2636 Frame::RemoveAddress(decoded) => assert_eq!(decoded, remove_addr), +2637 x => panic!("incorrect frame {x:?}"), +2638 } +2639 } +2640} \ No newline at end of file diff --git a/pr/323/docs/src/iroh_quinn_proto/packet.rs.html b/pr/323/docs/src/iroh_quinn_proto/packet.rs.html index e34dde3aa..ae16c6e2e 100644 --- a/pr/323/docs/src/iroh_quinn_proto/packet.rs.html +++ b/pr/323/docs/src/iroh_quinn_proto/packet.rs.html @@ -527,527 +527,536 @@ 527 ); 528 header_crypto.encrypt(pn_pos, buf); 529 } -530} -531 -532/// Plain packet header -533#[derive(Clone, Debug)] -534pub enum ProtectedHeader { -535 /// An Initial packet header -536 Initial(ProtectedInitialHeader), -537 /// A Long packet header, as used during the handshake -538 Long { -539 /// Type of the Long header packet -540 ty: LongType, -541 /// Destination Connection ID -542 dst_cid: ConnectionId, -543 /// Source Connection ID -544 src_cid: ConnectionId, -545 /// Length of the packet payload -546 len: u64, -547 /// QUIC version -548 version: u32, -549 }, -550 /// A Retry packet header -551 Retry { -552 /// Destination Connection ID -553 dst_cid: ConnectionId, -554 /// Source Connection ID -555 src_cid: ConnectionId, +530 +531 #[cfg(test)] +532 pub(crate) fn dummy() -> Self { +533 Self { +534 start: 0, +535 header_len: 2, +536 pn: Some((1, true)), +537 } +538 } +539} +540 +541/// Plain packet header +542#[derive(Clone, Debug)] +543pub enum ProtectedHeader { +544 /// An Initial packet header +545 Initial(ProtectedInitialHeader), +546 /// A Long packet header, as used during the handshake +547 Long { +548 /// Type of the Long header packet +549 ty: LongType, +550 /// Destination Connection ID +551 dst_cid: ConnectionId, +552 /// Source Connection ID +553 src_cid: ConnectionId, +554 /// Length of the packet payload +555 len: u64, 556 /// QUIC version 557 version: u32, 558 }, -559 /// A short packet header, as used during the data phase -560 Short { -561 /// Spin bit -562 spin: bool, -563 /// Destination Connection ID -564 dst_cid: ConnectionId, -565 }, -566 /// A Version Negotiation packet header -567 VersionNegotiate { -568 /// Random value -569 random: u8, -570 /// Destination Connection ID -571 dst_cid: ConnectionId, -572 /// Source Connection ID -573 src_cid: ConnectionId, +559 /// A Retry packet header +560 Retry { +561 /// Destination Connection ID +562 dst_cid: ConnectionId, +563 /// Source Connection ID +564 src_cid: ConnectionId, +565 /// QUIC version +566 version: u32, +567 }, +568 /// A short packet header, as used during the data phase +569 Short { +570 /// Spin bit +571 spin: bool, +572 /// Destination Connection ID +573 dst_cid: ConnectionId, 574 }, -575} -576 -577impl ProtectedHeader { -578 fn as_initial(&self) -> Option<&ProtectedInitialHeader> { -579 match self { -580 Self::Initial(x) => Some(x), -581 _ => None, -582 } -583 } -584 -585 /// The destination Connection ID of the packet -586 pub fn dst_cid(&self) -> ConnectionId { -587 use ProtectedHeader::*; +575 /// A Version Negotiation packet header +576 VersionNegotiate { +577 /// Random value +578 random: u8, +579 /// Destination Connection ID +580 dst_cid: ConnectionId, +581 /// Source Connection ID +582 src_cid: ConnectionId, +583 }, +584} +585 +586impl ProtectedHeader { +587 fn as_initial(&self) -> Option<&ProtectedInitialHeader> { 588 match self { -589 Initial(header) => header.dst_cid, -590 &Long { dst_cid, .. } => dst_cid, -591 &Retry { dst_cid, .. } => dst_cid, -592 &Short { dst_cid, .. } => dst_cid, -593 &VersionNegotiate { dst_cid, .. } => dst_cid, -594 } -595 } -596 -597 fn payload_len(&self) -> Option<u64> { -598 use ProtectedHeader::*; -599 match self { -600 Initial(ProtectedInitialHeader { len, .. }) | Long { len, .. } => Some(*len), -601 _ => None, -602 } -603 } -604 -605 /// Decode a plain header from given buffer, with given [`ConnectionIdParser`]. -606 pub fn decode( -607 buf: &mut io::Cursor<BytesMut>, -608 cid_parser: &(impl ConnectionIdParser + ?Sized), -609 supported_versions: &[u32], -610 grease_quic_bit: bool, -611 ) -> Result<Self, PacketDecodeError> { -612 let first = buf.get::<u8>()?; -613 if !grease_quic_bit && first & FIXED_BIT == 0 { -614 return Err(PacketDecodeError::InvalidHeader("fixed bit unset")); -615 } -616 if first & LONG_HEADER_FORM == 0 { -617 let spin = first & SPIN_BIT != 0; -618 -619 Ok(Self::Short { -620 spin, -621 dst_cid: cid_parser.parse(buf)?, -622 }) -623 } else { -624 let version = buf.get::<u32>()?; -625 -626 let dst_cid = ConnectionId::decode_long(buf) -627 .ok_or(PacketDecodeError::InvalidHeader("malformed cid"))?; -628 let src_cid = ConnectionId::decode_long(buf) -629 .ok_or(PacketDecodeError::InvalidHeader("malformed cid"))?; -630 -631 // TODO: Support long CIDs for compatibility with future QUIC versions -632 if version == 0 { -633 let random = first & !LONG_HEADER_FORM; -634 return Ok(Self::VersionNegotiate { -635 random, -636 dst_cid, -637 src_cid, -638 }); -639 } -640 -641 if !supported_versions.contains(&version) { -642 return Err(PacketDecodeError::UnsupportedVersion { -643 src_cid, -644 dst_cid, -645 version, -646 }); -647 } -648 -649 match LongHeaderType::from_byte(first)? { -650 LongHeaderType::Initial => { -651 let token_len = buf.get_var()? as usize; -652 let token_start = buf.position() as usize; -653 if token_len > buf.remaining() { -654 return Err(PacketDecodeError::InvalidHeader("token out of bounds")); -655 } -656 buf.advance(token_len); +589 Self::Initial(x) => Some(x), +590 _ => None, +591 } +592 } +593 +594 /// The destination Connection ID of the packet +595 pub fn dst_cid(&self) -> ConnectionId { +596 use ProtectedHeader::*; +597 match self { +598 Initial(header) => header.dst_cid, +599 &Long { dst_cid, .. } => dst_cid, +600 &Retry { dst_cid, .. } => dst_cid, +601 &Short { dst_cid, .. } => dst_cid, +602 &VersionNegotiate { dst_cid, .. } => dst_cid, +603 } +604 } +605 +606 fn payload_len(&self) -> Option<u64> { +607 use ProtectedHeader::*; +608 match self { +609 Initial(ProtectedInitialHeader { len, .. }) | Long { len, .. } => Some(*len), +610 _ => None, +611 } +612 } +613 +614 /// Decode a plain header from given buffer, with given [`ConnectionIdParser`]. +615 pub fn decode( +616 buf: &mut io::Cursor<BytesMut>, +617 cid_parser: &(impl ConnectionIdParser + ?Sized), +618 supported_versions: &[u32], +619 grease_quic_bit: bool, +620 ) -> Result<Self, PacketDecodeError> { +621 let first = buf.get::<u8>()?; +622 if !grease_quic_bit && first & FIXED_BIT == 0 { +623 return Err(PacketDecodeError::InvalidHeader("fixed bit unset")); +624 } +625 if first & LONG_HEADER_FORM == 0 { +626 let spin = first & SPIN_BIT != 0; +627 +628 Ok(Self::Short { +629 spin, +630 dst_cid: cid_parser.parse(buf)?, +631 }) +632 } else { +633 let version = buf.get::<u32>()?; +634 +635 let dst_cid = ConnectionId::decode_long(buf) +636 .ok_or(PacketDecodeError::InvalidHeader("malformed cid"))?; +637 let src_cid = ConnectionId::decode_long(buf) +638 .ok_or(PacketDecodeError::InvalidHeader("malformed cid"))?; +639 +640 // TODO: Support long CIDs for compatibility with future QUIC versions +641 if version == 0 { +642 let random = first & !LONG_HEADER_FORM; +643 return Ok(Self::VersionNegotiate { +644 random, +645 dst_cid, +646 src_cid, +647 }); +648 } +649 +650 if !supported_versions.contains(&version) { +651 return Err(PacketDecodeError::UnsupportedVersion { +652 src_cid, +653 dst_cid, +654 version, +655 }); +656 } 657 -658 let len = buf.get_var()?; -659 Ok(Self::Initial(ProtectedInitialHeader { -660 dst_cid, -661 src_cid, -662 token_pos: token_start..token_start + token_len, -663 len, -664 version, -665 })) -666 } -667 LongHeaderType::Retry => Ok(Self::Retry { -668 dst_cid, -669 src_cid, -670 version, -671 }), -672 LongHeaderType::Standard(ty) => Ok(Self::Long { -673 ty, -674 dst_cid, -675 src_cid, -676 len: buf.get_var()?, -677 version, -678 }), -679 } -680 } -681 } -682} -683 -684/// Header of an Initial packet, before decryption -685#[derive(Clone, Debug)] -686pub struct ProtectedInitialHeader { -687 /// Destination Connection ID -688 pub dst_cid: ConnectionId, -689 /// Source Connection ID -690 pub src_cid: ConnectionId, -691 /// The position of a token in the packet buffer -692 pub token_pos: Range<usize>, -693 /// Length of the packet payload -694 pub len: u64, -695 /// QUIC version -696 pub version: u32, -697} -698 -699#[derive(Clone, Debug)] -700pub(crate) struct InitialHeader { -701 pub(crate) dst_cid: ConnectionId, -702 pub(crate) src_cid: ConnectionId, -703 pub(crate) token: Bytes, -704 pub(crate) number: PacketNumber, -705 pub(crate) version: u32, +658 match LongHeaderType::from_byte(first)? { +659 LongHeaderType::Initial => { +660 let token_len = buf.get_var()? as usize; +661 let token_start = buf.position() as usize; +662 if token_len > buf.remaining() { +663 return Err(PacketDecodeError::InvalidHeader("token out of bounds")); +664 } +665 buf.advance(token_len); +666 +667 let len = buf.get_var()?; +668 Ok(Self::Initial(ProtectedInitialHeader { +669 dst_cid, +670 src_cid, +671 token_pos: token_start..token_start + token_len, +672 len, +673 version, +674 })) +675 } +676 LongHeaderType::Retry => Ok(Self::Retry { +677 dst_cid, +678 src_cid, +679 version, +680 }), +681 LongHeaderType::Standard(ty) => Ok(Self::Long { +682 ty, +683 dst_cid, +684 src_cid, +685 len: buf.get_var()?, +686 version, +687 }), +688 } +689 } +690 } +691} +692 +693/// Header of an Initial packet, before decryption +694#[derive(Clone, Debug)] +695pub struct ProtectedInitialHeader { +696 /// Destination Connection ID +697 pub dst_cid: ConnectionId, +698 /// Source Connection ID +699 pub src_cid: ConnectionId, +700 /// The position of a token in the packet buffer +701 pub token_pos: Range<usize>, +702 /// Length of the packet payload +703 pub len: u64, +704 /// QUIC version +705 pub version: u32, 706} 707 -708// An encoded packet number -709#[derive(Debug, Copy, Clone, Eq, PartialEq)] -710pub(crate) enum PacketNumber { -711 U8(u8), -712 U16(u16), -713 U24(u32), -714 U32(u32), +708#[derive(Clone, Debug)] +709pub(crate) struct InitialHeader { +710 pub(crate) dst_cid: ConnectionId, +711 pub(crate) src_cid: ConnectionId, +712 pub(crate) token: Bytes, +713 pub(crate) number: PacketNumber, +714 pub(crate) version: u32, 715} 716 -717impl PacketNumber { -718 pub(crate) fn new(n: u64, largest_acked: u64) -> Self { -719 let range = (n - largest_acked) * 2; -720 if range < 1 << 8 { -721 Self::U8(n as u8) -722 } else if range < 1 << 16 { -723 Self::U16(n as u16) -724 } else if range < 1 << 24 { -725 Self::U24(n as u32) -726 } else if range < 1 << 32 { -727 Self::U32(n as u32) -728 } else { -729 panic!("packet number too large to encode") -730 } -731 } -732 -733 pub(crate) fn len(self) -> usize { -734 use PacketNumber::*; -735 match self { -736 U8(_) => 1, -737 U16(_) => 2, -738 U24(_) => 3, -739 U32(_) => 4, -740 } -741 } -742 -743 pub(crate) fn encode<W: BufMut>(self, w: &mut W) { -744 use PacketNumber::*; -745 match self { -746 U8(x) => w.write(x), -747 U16(x) => w.write(x), -748 U24(x) => w.put_uint(u64::from(x), 3), -749 U32(x) => w.write(x), -750 } -751 } -752 -753 pub(crate) fn decode<R: Buf>(len: usize, r: &mut R) -> Result<Self, PacketDecodeError> { -754 use PacketNumber::*; -755 let pn = match len { -756 1 => U8(r.get()?), -757 2 => U16(r.get()?), -758 3 => U24(r.get_uint(3) as u32), -759 4 => U32(r.get()?), -760 _ => unreachable!(), -761 }; -762 Ok(pn) -763 } -764 -765 pub(crate) fn decode_len(tag: u8) -> usize { -766 1 + (tag & 0x03) as usize -767 } -768 -769 fn tag(self) -> u8 { -770 use PacketNumber::*; -771 match self { -772 U8(_) => 0b00, -773 U16(_) => 0b01, -774 U24(_) => 0b10, -775 U32(_) => 0b11, -776 } -777 } -778 -779 pub(crate) fn expand(self, expected: u64) -> u64 { -780 // From Appendix A -781 use PacketNumber::*; -782 let truncated = match self { -783 U8(x) => u64::from(x), -784 U16(x) => u64::from(x), -785 U24(x) => u64::from(x), -786 U32(x) => u64::from(x), -787 }; -788 let nbits = self.len() * 8; -789 let win = 1 << nbits; -790 let hwin = win / 2; -791 let mask = win - 1; -792 // The incoming packet number should be greater than expected - hwin and less than or equal -793 // to expected + hwin -794 // -795 // This means we can't just strip the trailing bits from expected and add the truncated -796 // because that might yield a value outside the window. -797 // -798 // The following code calculates a candidate value and makes sure it's within the packet -799 // number window. -800 let candidate = (expected & !mask) | truncated; -801 if expected.checked_sub(hwin).is_some_and(|x| candidate <= x) { -802 candidate + win -803 } else if candidate > expected + hwin && candidate > win { -804 candidate - win -805 } else { -806 candidate -807 } -808 } -809} -810 -811/// A [`ConnectionIdParser`] implementation that assumes the connection ID is of fixed length -812pub struct FixedLengthConnectionIdParser { -813 expected_len: usize, -814} -815 -816impl FixedLengthConnectionIdParser { -817 /// Create a new instance of `FixedLengthConnectionIdParser` -818 pub fn new(expected_len: usize) -> Self { -819 Self { expected_len } -820 } -821} -822 -823impl ConnectionIdParser for FixedLengthConnectionIdParser { -824 fn parse(&self, buffer: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError> { -825 (buffer.remaining() >= self.expected_len) -826 .then(|| ConnectionId::from_buf(buffer, self.expected_len)) -827 .ok_or(PacketDecodeError::InvalidHeader("packet too small")) -828 } -829} -830 -831/// Parse connection id in short header packet -832pub trait ConnectionIdParser { -833 /// Parse a connection id from given buffer -834 fn parse(&self, buf: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError>; -835} -836 -837/// Long packet type including non-uniform cases -838#[derive(Clone, Copy, Debug, Eq, PartialEq)] -839pub(crate) enum LongHeaderType { -840 Initial, -841 Retry, -842 Standard(LongType), -843} -844 -845impl LongHeaderType { -846 fn from_byte(b: u8) -> Result<Self, PacketDecodeError> { -847 use {LongHeaderType::*, LongType::*}; -848 debug_assert!(b & LONG_HEADER_FORM != 0, "not a long packet"); -849 Ok(match (b & 0x30) >> 4 { -850 0x0 => Initial, -851 0x1 => Standard(ZeroRtt), -852 0x2 => Standard(Handshake), -853 0x3 => Retry, -854 _ => unreachable!(), -855 }) -856 } -857} -858 -859impl From<LongHeaderType> for u8 { -860 fn from(ty: LongHeaderType) -> Self { -861 use {LongHeaderType::*, LongType::*}; -862 match ty { -863 Initial => LONG_HEADER_FORM | FIXED_BIT, -864 Standard(ZeroRtt) => LONG_HEADER_FORM | FIXED_BIT | (0x1 << 4), -865 Standard(Handshake) => LONG_HEADER_FORM | FIXED_BIT | (0x2 << 4), -866 Retry => LONG_HEADER_FORM | FIXED_BIT | (0x3 << 4), -867 } -868 } -869} -870 -871/// Long packet types with uniform header structure -872#[derive(Clone, Copy, Debug, Eq, PartialEq)] -873pub enum LongType { -874 /// Handshake packet -875 Handshake, -876 /// 0-RTT packet -877 ZeroRtt, +717// An encoded packet number +718#[derive(Debug, Copy, Clone, Eq, PartialEq)] +719pub(crate) enum PacketNumber { +720 U8(u8), +721 U16(u16), +722 U24(u32), +723 U32(u32), +724} +725 +726impl PacketNumber { +727 pub(crate) fn new(n: u64, largest_acked: u64) -> Self { +728 let range = (n - largest_acked) * 2; +729 if range < 1 << 8 { +730 Self::U8(n as u8) +731 } else if range < 1 << 16 { +732 Self::U16(n as u16) +733 } else if range < 1 << 24 { +734 Self::U24(n as u32) +735 } else if range < 1 << 32 { +736 Self::U32(n as u32) +737 } else { +738 panic!("packet number too large to encode") +739 } +740 } +741 +742 pub(crate) fn len(self) -> usize { +743 use PacketNumber::*; +744 match self { +745 U8(_) => 1, +746 U16(_) => 2, +747 U24(_) => 3, +748 U32(_) => 4, +749 } +750 } +751 +752 pub(crate) fn encode<W: BufMut>(self, w: &mut W) { +753 use PacketNumber::*; +754 match self { +755 U8(x) => w.write(x), +756 U16(x) => w.write(x), +757 U24(x) => w.put_uint(u64::from(x), 3), +758 U32(x) => w.write(x), +759 } +760 } +761 +762 pub(crate) fn decode<R: Buf>(len: usize, r: &mut R) -> Result<Self, PacketDecodeError> { +763 use PacketNumber::*; +764 let pn = match len { +765 1 => U8(r.get()?), +766 2 => U16(r.get()?), +767 3 => U24(r.get_uint(3) as u32), +768 4 => U32(r.get()?), +769 _ => unreachable!(), +770 }; +771 Ok(pn) +772 } +773 +774 pub(crate) fn decode_len(tag: u8) -> usize { +775 1 + (tag & 0x03) as usize +776 } +777 +778 fn tag(self) -> u8 { +779 use PacketNumber::*; +780 match self { +781 U8(_) => 0b00, +782 U16(_) => 0b01, +783 U24(_) => 0b10, +784 U32(_) => 0b11, +785 } +786 } +787 +788 pub(crate) fn expand(self, expected: u64) -> u64 { +789 // From Appendix A +790 use PacketNumber::*; +791 let truncated = match self { +792 U8(x) => u64::from(x), +793 U16(x) => u64::from(x), +794 U24(x) => u64::from(x), +795 U32(x) => u64::from(x), +796 }; +797 let nbits = self.len() * 8; +798 let win = 1 << nbits; +799 let hwin = win / 2; +800 let mask = win - 1; +801 // The incoming packet number should be greater than expected - hwin and less than or equal +802 // to expected + hwin +803 // +804 // This means we can't just strip the trailing bits from expected and add the truncated +805 // because that might yield a value outside the window. +806 // +807 // The following code calculates a candidate value and makes sure it's within the packet +808 // number window. +809 let candidate = (expected & !mask) | truncated; +810 if expected.checked_sub(hwin).is_some_and(|x| candidate <= x) { +811 candidate + win +812 } else if candidate > expected + hwin && candidate > win { +813 candidate - win +814 } else { +815 candidate +816 } +817 } +818} +819 +820/// A [`ConnectionIdParser`] implementation that assumes the connection ID is of fixed length +821pub struct FixedLengthConnectionIdParser { +822 expected_len: usize, +823} +824 +825impl FixedLengthConnectionIdParser { +826 /// Create a new instance of `FixedLengthConnectionIdParser` +827 pub fn new(expected_len: usize) -> Self { +828 Self { expected_len } +829 } +830} +831 +832impl ConnectionIdParser for FixedLengthConnectionIdParser { +833 fn parse(&self, buffer: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError> { +834 (buffer.remaining() >= self.expected_len) +835 .then(|| ConnectionId::from_buf(buffer, self.expected_len)) +836 .ok_or(PacketDecodeError::InvalidHeader("packet too small")) +837 } +838} +839 +840/// Parse connection id in short header packet +841pub trait ConnectionIdParser { +842 /// Parse a connection id from given buffer +843 fn parse(&self, buf: &mut dyn Buf) -> Result<ConnectionId, PacketDecodeError>; +844} +845 +846/// Long packet type including non-uniform cases +847#[derive(Clone, Copy, Debug, Eq, PartialEq)] +848pub(crate) enum LongHeaderType { +849 Initial, +850 Retry, +851 Standard(LongType), +852} +853 +854impl LongHeaderType { +855 fn from_byte(b: u8) -> Result<Self, PacketDecodeError> { +856 use {LongHeaderType::*, LongType::*}; +857 debug_assert!(b & LONG_HEADER_FORM != 0, "not a long packet"); +858 Ok(match (b & 0x30) >> 4 { +859 0x0 => Initial, +860 0x1 => Standard(ZeroRtt), +861 0x2 => Standard(Handshake), +862 0x3 => Retry, +863 _ => unreachable!(), +864 }) +865 } +866} +867 +868impl From<LongHeaderType> for u8 { +869 fn from(ty: LongHeaderType) -> Self { +870 use {LongHeaderType::*, LongType::*}; +871 match ty { +872 Initial => LONG_HEADER_FORM | FIXED_BIT, +873 Standard(ZeroRtt) => LONG_HEADER_FORM | FIXED_BIT | (0x1 << 4), +874 Standard(Handshake) => LONG_HEADER_FORM | FIXED_BIT | (0x2 << 4), +875 Retry => LONG_HEADER_FORM | FIXED_BIT | (0x3 << 4), +876 } +877 } 878} 879 -880/// Packet decode error -881#[derive(Debug, Error, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)] -882pub enum PacketDecodeError { -883 /// Packet uses a QUIC version that is not supported -884 #[error("unsupported version {version:x}")] -885 UnsupportedVersion { -886 /// Source Connection ID -887 src_cid: ConnectionId, -888 /// Destination Connection ID -889 dst_cid: ConnectionId, -890 /// The version that was unsupported -891 version: u32, -892 }, -893 /// The packet header is invalid -894 #[error("invalid header: {0}")] -895 InvalidHeader(&'static str), -896} -897 -898impl From<coding::UnexpectedEnd> for PacketDecodeError { -899 fn from(_: coding::UnexpectedEnd) -> Self { -900 Self::InvalidHeader("unexpected end of packet") -901 } -902} -903 -904pub(crate) const LONG_HEADER_FORM: u8 = 0x80; -905pub(crate) const FIXED_BIT: u8 = 0x40; -906pub(crate) const SPIN_BIT: u8 = 0x20; -907const SHORT_RESERVED_BITS: u8 = 0x18; -908const LONG_RESERVED_BITS: u8 = 0x0c; -909const KEY_PHASE_BIT: u8 = 0x04; -910 -911/// Packet number space identifiers -912#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)] -913pub(crate) enum SpaceId { -914 /// Unprotected packets, used to bootstrap the handshake -915 Initial = 0, -916 Handshake = 1, -917 /// Application data space, used for 0-RTT and post-handshake/1-RTT packets -918 Data = 2, -919} -920 -921impl SpaceId { -922 pub(crate) fn iter() -> impl Iterator<Item = Self> { -923 [Self::Initial, Self::Handshake, Self::Data].iter().cloned() -924 } -925 -926 /// Returns the next higher packet space. -927 /// -928 /// Keeps returning [`SpaceId::Data`] as the highest space. -929 pub(crate) fn next(&self) -> Self { -930 match self { -931 Self::Initial => Self::Handshake, -932 Self::Handshake => Self::Data, -933 Self::Data => Self::Data, -934 } -935 } -936} -937 -938#[cfg(test)] -939mod tests { -940 use super::*; -941 use hex_literal::hex; -942 use std::io; -943 -944 fn check_pn(typed: PacketNumber, encoded: &[u8]) { -945 let mut buf = Vec::new(); -946 typed.encode(&mut buf); -947 assert_eq!(&buf[..], encoded); -948 let decoded = PacketNumber::decode(typed.len(), &mut io::Cursor::new(&buf)).unwrap(); -949 assert_eq!(typed, decoded); -950 } -951 -952 #[test] -953 fn roundtrip_packet_numbers() { -954 check_pn(PacketNumber::U8(0x7f), &hex!("7f")); -955 check_pn(PacketNumber::U16(0x80), &hex!("0080")); -956 check_pn(PacketNumber::U16(0x3fff), &hex!("3fff")); -957 check_pn(PacketNumber::U32(0x0000_4000), &hex!("0000 4000")); -958 check_pn(PacketNumber::U32(0xffff_ffff), &hex!("ffff ffff")); +880/// Long packet types with uniform header structure +881#[derive(Clone, Copy, Debug, Eq, PartialEq)] +882pub enum LongType { +883 /// Handshake packet +884 Handshake, +885 /// 0-RTT packet +886 ZeroRtt, +887} +888 +889/// Packet decode error +890#[derive(Debug, Error, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)] +891pub enum PacketDecodeError { +892 /// Packet uses a QUIC version that is not supported +893 #[error("unsupported version {version:x}")] +894 UnsupportedVersion { +895 /// Source Connection ID +896 src_cid: ConnectionId, +897 /// Destination Connection ID +898 dst_cid: ConnectionId, +899 /// The version that was unsupported +900 version: u32, +901 }, +902 /// The packet header is invalid +903 #[error("invalid header: {0}")] +904 InvalidHeader(&'static str), +905} +906 +907impl From<coding::UnexpectedEnd> for PacketDecodeError { +908 fn from(_: coding::UnexpectedEnd) -> Self { +909 Self::InvalidHeader("unexpected end of packet") +910 } +911} +912 +913pub(crate) const LONG_HEADER_FORM: u8 = 0x80; +914pub(crate) const FIXED_BIT: u8 = 0x40; +915pub(crate) const SPIN_BIT: u8 = 0x20; +916const SHORT_RESERVED_BITS: u8 = 0x18; +917const LONG_RESERVED_BITS: u8 = 0x0c; +918const KEY_PHASE_BIT: u8 = 0x04; +919 +920/// Packet number space identifiers +921#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)] +922pub(crate) enum SpaceId { +923 /// Unprotected packets, used to bootstrap the handshake +924 Initial = 0, +925 Handshake = 1, +926 /// Application data space, used for 0-RTT and post-handshake/1-RTT packets +927 Data = 2, +928} +929 +930impl SpaceId { +931 pub(crate) fn iter() -> impl Iterator<Item = Self> { +932 [Self::Initial, Self::Handshake, Self::Data].iter().cloned() +933 } +934 +935 /// Returns the next higher packet space. +936 /// +937 /// Keeps returning [`SpaceId::Data`] as the highest space. +938 pub(crate) fn next(&self) -> Self { +939 match self { +940 Self::Initial => Self::Handshake, +941 Self::Handshake => Self::Data, +942 Self::Data => Self::Data, +943 } +944 } +945} +946 +947#[cfg(test)] +948mod tests { +949 use super::*; +950 use hex_literal::hex; +951 use std::io; +952 +953 fn check_pn(typed: PacketNumber, encoded: &[u8]) { +954 let mut buf = Vec::new(); +955 typed.encode(&mut buf); +956 assert_eq!(&buf[..], encoded); +957 let decoded = PacketNumber::decode(typed.len(), &mut io::Cursor::new(&buf)).unwrap(); +958 assert_eq!(typed, decoded); 959 } 960 961 #[test] -962 fn pn_encode() { -963 check_pn(PacketNumber::new(0x10, 0), &hex!("10")); -964 check_pn(PacketNumber::new(0x100, 0), &hex!("0100")); -965 check_pn(PacketNumber::new(0x10000, 0), &hex!("010000")); -966 } -967 -968 #[test] -969 fn pn_expand_roundtrip() { -970 for expected in 0..1024 { -971 for actual in expected..1024 { -972 assert_eq!(actual, PacketNumber::new(actual, expected).expand(expected)); -973 } -974 } +962 fn roundtrip_packet_numbers() { +963 check_pn(PacketNumber::U8(0x7f), &hex!("7f")); +964 check_pn(PacketNumber::U16(0x80), &hex!("0080")); +965 check_pn(PacketNumber::U16(0x3fff), &hex!("3fff")); +966 check_pn(PacketNumber::U32(0x0000_4000), &hex!("0000 4000")); +967 check_pn(PacketNumber::U32(0xffff_ffff), &hex!("ffff ffff")); +968 } +969 +970 #[test] +971 fn pn_encode() { +972 check_pn(PacketNumber::new(0x10, 0), &hex!("10")); +973 check_pn(PacketNumber::new(0x100, 0), &hex!("0100")); +974 check_pn(PacketNumber::new(0x10000, 0), &hex!("010000")); 975 } 976 -977 #[cfg(any(feature = "rustls-aws-lc-rs", feature = "rustls-ring"))] -978 #[test] -979 fn header_encoding() { -980 use crate::Side; -981 use crate::crypto::rustls::{initial_keys, initial_suite_from_provider}; -982 #[cfg(all(feature = "rustls-aws-lc-rs", not(feature = "rustls-ring")))] -983 use rustls::crypto::aws_lc_rs::default_provider; -984 #[cfg(feature = "rustls-ring")] -985 use rustls::crypto::ring::default_provider; -986 use rustls::quic::Version; -987 -988 let dcid = ConnectionId::new(&hex!("06b858ec6f80452b")); -989 let provider = default_provider(); -990 -991 let suite = initial_suite_from_provider(&std::sync::Arc::new(provider)).unwrap(); -992 let client = initial_keys(Version::V1, dcid, Side::Client, &suite); -993 let mut buf = Vec::new(); -994 let header = Header::Initial(InitialHeader { -995 number: PacketNumber::U8(0), -996 src_cid: ConnectionId::new(&[]), -997 dst_cid: dcid, -998 token: Bytes::new(), -999 version: crate::DEFAULT_SUPPORTED_VERSIONS[0], -1000 }); -1001 let encode = header.encode(&mut buf); -1002 let header_len = buf.len(); -1003 buf.resize(header_len + 16 + client.packet.local.tag_len(), 0); -1004 encode.finish( -1005 &mut buf, -1006 &*client.header.local, -1007 Some((0, PathId::ZERO, &*client.packet.local)), -1008 ); -1009 -1010 for byte in &buf { -1011 print!("{byte:02x}"); -1012 } -1013 println!(); -1014 assert_eq!( -1015 buf[..], -1016 hex!( -1017 "c8000000010806b858ec6f80452b00004021be -1018 3ef50807b84191a196f760a6dad1e9d1c430c48952cba0148250c21c0a6a70e1" -1019 )[..] -1020 ); -1021 -1022 let server = initial_keys(Version::V1, dcid, Side::Server, &suite); -1023 let supported_versions = crate::DEFAULT_SUPPORTED_VERSIONS.to_vec(); -1024 let decode = PartialDecode::new( -1025 buf.as_slice().into(), -1026 &FixedLengthConnectionIdParser::new(0), -1027 &supported_versions, -1028 false, -1029 ) -1030 .unwrap() -1031 .0; -1032 let mut packet = decode.finish(Some(&*server.header.remote)).unwrap(); -1033 assert_eq!( -1034 packet.header_data[..], -1035 hex!("c0000000010806b858ec6f80452b0000402100")[..] -1036 ); -1037 server -1038 .packet -1039 .remote -1040 .decrypt(PathId::ZERO, 0, &packet.header_data, &mut packet.payload) -1041 .unwrap(); -1042 assert_eq!(packet.payload[..], [0; 16]); -1043 match packet.header { -1044 Header::Initial(InitialHeader { -1045 number: PacketNumber::U8(0), -1046 .. -1047 }) => {} -1048 _ => { -1049 panic!("unexpected header {:?}", packet.header); -1050 } -1051 } -1052 } -1053} \ No newline at end of file +977 #[test] +978 fn pn_expand_roundtrip() { +979 for expected in 0..1024 { +980 for actual in expected..1024 { +981 assert_eq!(actual, PacketNumber::new(actual, expected).expand(expected)); +982 } +983 } +984 } +985 +986 #[cfg(any(feature = "rustls-aws-lc-rs", feature = "rustls-ring"))] +987 #[test] +988 fn header_encoding() { +989 use crate::Side; +990 use crate::crypto::rustls::{initial_keys, initial_suite_from_provider}; +991 #[cfg(all(feature = "rustls-aws-lc-rs", not(feature = "rustls-ring")))] +992 use rustls::crypto::aws_lc_rs::default_provider; +993 #[cfg(feature = "rustls-ring")] +994 use rustls::crypto::ring::default_provider; +995 use rustls::quic::Version; +996 +997 let dcid = ConnectionId::new(&hex!("06b858ec6f80452b")); +998 let provider = default_provider(); +999 +1000 let suite = initial_suite_from_provider(&std::sync::Arc::new(provider)).unwrap(); +1001 let client = initial_keys(Version::V1, dcid, Side::Client, &suite); +1002 let mut buf = Vec::new(); +1003 let header = Header::Initial(InitialHeader { +1004 number: PacketNumber::U8(0), +1005 src_cid: ConnectionId::new(&[]), +1006 dst_cid: dcid, +1007 token: Bytes::new(), +1008 version: crate::DEFAULT_SUPPORTED_VERSIONS[0], +1009 }); +1010 let encode = header.encode(&mut buf); +1011 let header_len = buf.len(); +1012 buf.resize(header_len + 16 + client.packet.local.tag_len(), 0); +1013 encode.finish( +1014 &mut buf, +1015 &*client.header.local, +1016 Some((0, PathId::ZERO, &*client.packet.local)), +1017 ); +1018 +1019 for byte in &buf { +1020 print!("{byte:02x}"); +1021 } +1022 println!(); +1023 assert_eq!( +1024 buf[..], +1025 hex!( +1026 "c8000000010806b858ec6f80452b00004021be +1027 3ef50807b84191a196f760a6dad1e9d1c430c48952cba0148250c21c0a6a70e1" +1028 )[..] +1029 ); +1030 +1031 let server = initial_keys(Version::V1, dcid, Side::Server, &suite); +1032 let supported_versions = crate::DEFAULT_SUPPORTED_VERSIONS.to_vec(); +1033 let decode = PartialDecode::new( +1034 buf.as_slice().into(), +1035 &FixedLengthConnectionIdParser::new(0), +1036 &supported_versions, +1037 false, +1038 ) +1039 .unwrap() +1040 .0; +1041 let mut packet = decode.finish(Some(&*server.header.remote)).unwrap(); +1042 assert_eq!( +1043 packet.header_data[..], +1044 hex!("c0000000010806b858ec6f80452b0000402100")[..] +1045 ); +1046 server +1047 .packet +1048 .remote +1049 .decrypt(PathId::ZERO, 0, &packet.header_data, &mut packet.payload) +1050 .unwrap(); +1051 assert_eq!(packet.payload[..], [0; 16]); +1052 match packet.header { +1053 Header::Initial(InitialHeader { +1054 number: PacketNumber::U8(0), +1055 .. +1056 }) => {} +1057 _ => { +1058 panic!("unexpected header {:?}", packet.header); +1059 } +1060 } +1061 } +1062} \ No newline at end of file diff --git a/pr/323/docs/trait.impl/core/fmt/trait.Display.js b/pr/323/docs/trait.impl/core/fmt/trait.Display.js index 93a331159..2beb612ac 100644 --- a/pr/323/docs/trait.impl/core/fmt/trait.Display.js +++ b/pr/323/docs/trait.impl/core/fmt/trait.Display.js @@ -1,9 +1,9 @@ (function() { - var implementors = Object.fromEntries([["iroh_quinn",[["impl Display for ReadError"],["impl Display for ReadExactError"],["impl Display for ReadToEndError"],["impl Display for ResetError"],["impl Display for SendDatagramError"],["impl Display for StoppedError"],["impl Display for WriteError"],["impl Display for RetryError"]]],["iroh_quinn_proto",[["impl Display for ClosePathError"],["impl Display for ConfigError"],["impl Display for ConnectError"],["impl Display for ConnectionError"],["impl Display for Dir"],["impl Display for FinishError"],["impl Display for FrameType"],["impl Display for MaybeFrame"],["impl Display for PacketDecodeError"],["impl Display for PathError"],["impl Display for ReadError"],["impl Display for ReadableError"],["impl Display for SendDatagramError"],["impl Display for SetPathStatusError"],["impl Display for WriteError"],["impl Display for Error"],["impl Display for Error"],["impl Display for UnexpectedEnd"],["impl Display for NoInitialCipherSuite"],["impl Display for ApplicationClose"],["impl Display for ClosedPath"],["impl Display for ClosedStream"],["impl Display for ConnectionClose"],["impl Display for ConnectionId"],["impl Display for DatagramInfo"],["impl Display for FourTuple"],["impl Display for MultipathNotNegotiated"],["impl Display for PathId"],["impl Display for RetryError"],["impl Display for StreamId"],["impl Display for StreamInfo"],["impl Display for Error"],["impl Display for Code"],["impl Display for VarInt"],["impl Display for VarIntBoundsExceeded"]]]]); + var implementors = Object.fromEntries([["iroh_quinn",[["impl Display for ReadError"],["impl Display for ReadExactError"],["impl Display for ReadToEndError"],["impl Display for ResetError"],["impl Display for SendDatagramError"],["impl Display for StoppedError"],["impl Display for WriteError"],["impl Display for RetryError"]]],["iroh_quinn_proto",[["impl Display for ClosePathError"],["impl Display for ConfigError"],["impl Display for ConnectError"],["impl Display for ConnectionError"],["impl Display for Dir"],["impl Display for FinishError"],["impl Display for FrameType"],["impl Display for MaybeFrame"],["impl Display for PacketDecodeError"],["impl Display for PathError"],["impl Display for ReadError"],["impl Display for ReadableError"],["impl Display for SendDatagramError"],["impl Display for SetPathStatusError"],["impl Display for WriteError"],["impl Display for Error"],["impl Display for Error"],["impl Display for UnexpectedEnd"],["impl Display for NoInitialCipherSuite"],["impl Display for ApplicationClose"],["impl Display for ClosedPath"],["impl Display for ClosedStream"],["impl Display for ConnectionClose"],["impl Display for ConnectionId"],["impl Display for Datagram"],["impl Display for DatagramInfo"],["impl Display for FourTuple"],["impl Display for MultipathNotNegotiated"],["impl Display for PathId"],["impl Display for RetryError"],["impl Display for StreamId"],["impl Display for StreamInfo"],["impl Display for Error"],["impl Display for Code"],["impl Display for VarInt"],["impl Display for VarIntBoundsExceeded"]]]]); if (window.register_implementors) { window.register_implementors(implementors); } else { window.pending_implementors = implementors; } })() -//{"start":57,"fragment_lengths":[2166,10016]} \ No newline at end of file +//{"start":57,"fragment_lengths":[2166,10290]} \ No newline at end of file