Struct Cubic 

pub struct Cubic { /* private fields */ }

The RFC8312 congestion controller, as widely used for TCP

Implementations

impl Cubic

pub fn new(config: Arc<CubicConfig>, _now: Instant, current_mtu: u16) -> Cubic

Construct a state using the given config and current time now

Trait Implementations

impl Clone for Cubic

fn clone(&self) -> Cubic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Controller for Cubic

fn on_ack( &mut self, now: Instant, sent: Instant, bytes: u64, _pn: u64, app_limited: bool, rtt: &RttEstimator, )

Packet deliveries were confirmed

fn on_congestion_event( &mut self, now: Instant, sent: Instant, is_persistent_congestion: bool, is_ecn: bool, _lost_bytes: u64, _largest_lost_pn: u64, )

Packets were deemed lost or marked congested

fn on_spurious_congestion_event(&mut self)

Packets were incorrectly deemed lost

fn on_mtu_update(&mut self, new_mtu: u16)

The known MTU for the current network path has been updated

fn window(&self) -> u64

Number of ack-eliciting bytes that may be in flight

fn metrics(&self) -> ControllerMetrics

Retrieve implementation-specific metrics used to populate qlog traces when they are enabled This is also used to alter the pacing of the connection with pacing_rate and send_quantum

fn clone_box(&self) -> Box<dyn Controller>

Duplicate the controller’s state

fn initial_window(&self) -> u64

Initial congestion window

fn into_any(self: Box<Cubic>) -> Box<dyn Any>

Returns Self for use in down-casting to extract implementation details

fn on_sent(&mut self, now: Instant, bytes: u64, largest_pn: u64)

One or more packets were just sent

fn on_packet_sent(&mut self, now: Instant, bytes: u16, pn: u64)

One packet was just sent

fn on_end_acks( &mut self, now: Instant, in_flight: u64, app_limited: bool, largest_packet_num_acked: Option<u64>, )

Packets are acked in batches, all with the same now argument. This indicates one of those batches has completed.

fn on_packet_lost(&mut self, lost_bytes: u16, pn: u64, now: Instant)

One packet was just lost

fn on_ack_frequency_update( &mut self, ack_eliciting_threshold: u64, requested_max_ack_delay: Duration, )

The peer’s ACK-frequency parameters have changed

impl Debug for Cubic

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

Formats the value using the given formatter.