Struct MessageCodec 

pub struct MessageCodec { /* private fields */ }

Tokio codec for length-prefixed BitTorrent messages.

Wire format: <4-byte big-endian length><payload> where payload = <message-id><message-body> (or empty for keep-alive).

Implementations

impl MessageCodec

pub fn new() -> Self

Create a codec with the default maximum message size (16 MiB).

pub fn with_max_size(self, max: usize) -> Self

Set the maximum allowed message size.

Trait Implementations

impl Decoder for MessageCodec

type Item = Message

The type of decoded frames.

type Error = Error

The type of unrecoverable frame decoding errors.

fn decode( &mut self, src: &mut BytesMut, ) -> Result<Option<Message<Bytes>>, Error>

Attempts to decode a frame from the provided buffer of bytes.

fn decode_eof( &mut self, buf: &mut BytesMut, ) -> Result<Option<Self::Item>, Self::Error>

A default method available to be called when there are no more bytes available to be read from the underlying I/O.

fn framed<T>(self, io: T) -> Framed<T, Self>

where T: AsyncRead + AsyncWrite, Self: Sized,

Provides a Stream and Sink interface for reading and writing to this Io object, using Decode and Encode to read and write the raw data.

impl Default for MessageCodec

fn default() -> Self

Returns the “default value” for a type.

impl Encoder<Message> for MessageCodec

type Error = Error

The type of encoding errors.

fn encode( &mut self, msg: Message<Bytes>, dst: &mut BytesMut, ) -> Result<(), Error>

Encodes a frame into the buffer provided.