diff --git a/quinn-proto/src/connection/streams/send.rs b/quinn-proto/src/connection/streams/send.rs
index df6a9333b..1ffdd54bf 100644
--- a/quinn-proto/src/connection/streams/send.rs
+++ b/quinn-proto/src/connection/streams/send.rs
@@ -135,37 +135,6 @@ impl Send {
     }
 }
 
-/// A source of one or more buffers which can be converted into `Bytes` buffers on demand
-///
-/// The purpose of this data type is to defer conversion as long as possible,
-/// so that no heap allocation is required in case no data is writable.
-pub trait BytesSource {
-    /// Returns the next chunk from the source of owned chunks.
-    ///
-    /// This method will consume parts of the source.
-    /// Calling it will yield `Bytes` elements up to the configured `limit`.
-    ///
-    /// The method returns a tuple:
-    /// - The first item is the yielded `Bytes` element. The element will be
-    ///   empty if the limit is zero or no more data is available.
-    /// - The second item returns how many complete chunks inside the source had
-    ///   had been consumed. This can be less than 1, if a chunk inside the
-    ///   source had been truncated in order to adhere to the limit. It can also
-    ///   be more than 1, if zero-length chunks had been skipped.
-    fn pop_chunk(&mut self, limit: usize) -> (Bytes, usize);
-}
-
-/// Indicates how many bytes and chunks had been transferred in a write operation
-#[derive(Debug, Default, PartialEq, Eq, Clone, Copy)]
-pub struct Written {
-    /// The amount of bytes which had been written
-    pub bytes: usize,
-    /// The amount of full chunks which had been written
-    ///
-    /// If a chunk was only partially written, it will not be counted by this field.
-    pub chunks: usize,
-}
-
 /// A [`BytesSource`] implementation for `&'a mut [Bytes]`
 ///
 /// The type allows to dequeue [`Bytes`] chunks from an array of chunks, up to
@@ -246,6 +215,37 @@ impl<'a> BytesSource for ByteSlice<'a> {
     }
 }
 
+/// A source of one or more buffers which can be converted into `Bytes` buffers on demand
+///
+/// The purpose of this data type is to defer conversion as long as possible,
+/// so that no heap allocation is required in case no data is writable.
+pub trait BytesSource {
+    /// Returns the next chunk from the source of owned chunks.
+    ///
+    /// This method will consume parts of the source.
+    /// Calling it will yield `Bytes` elements up to the configured `limit`.
+    ///
+    /// The method returns a tuple:
+    /// - The first item is the yielded `Bytes` element. The element will be
+    ///   empty if the limit is zero or no more data is available.
+    /// - The second item returns how many complete chunks inside the source had
+    ///   had been consumed. This can be less than 1, if a chunk inside the
+    ///   source had been truncated in order to adhere to the limit. It can also
+    ///   be more than 1, if zero-length chunks had been skipped.
+    fn pop_chunk(&mut self, limit: usize) -> (Bytes, usize);
+}
+
+/// Indicates how many bytes and chunks had been transferred in a write operation
+#[derive(Debug, Default, PartialEq, Eq, Clone, Copy)]
+pub struct Written {
+    /// The amount of bytes which had been written
+    pub bytes: usize,
+    /// The amount of full chunks which had been written
+    ///
+    /// If a chunk was only partially written, it will not be counted by this field.
+    pub chunks: usize,
+}
+
 /// Errors triggered while writing to a send stream
 #[derive(Debug, Error, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
 pub enum WriteError {