Lightws

Lightweight websocket implement for stream transmission.

Features

• Avoid heap allocation.
• Avoid buffering frame payload.
• Use vectored-io if available.
• Transparent Read/Write over the underlying IO source.

High-level API

[role, endpoint, stream]

Std:

{
    // handshake
    let stream = Endpoint<TcpStream, Client>::connect(tcp, buf, host, path)?;
    // read some data
    stream.read(&mut buf)?;
    // write some data
    stream.write(&buf)?;
}

Async:

{
    // handshake
    let stream = Endpoint<TcpStream, Client>::connect_async(tcp, buf, host, path).await?;
    // read some data
    stream.read(&mut buf).await?;
    // write some data
    stream.write(&buf).await?;
}

Low-level API

[frame, handshake]

Frame:

{
    // encode a frame head
    let head = FrameHead::new(...);
    let offset = unsafe {
        head.encode_unchecked(&mut buf);
    };

    // decode a frame head
    let (head, offset) = FrameHead::decode(&buf).unwrap();
}

Handshake:

{
    // make a client handshake request
    let request = Request::new(b"/ws", b"example.com", "sec-key..");
    let offset = request.encode(&mut buf).unwrap();

    // parse a server handshake response
    let mut custom_headers = HttpHeader::new_storage();
    let mut response = Response::new_storage(&mut custom_headers);
    let offset = response.decode(&buf).unwrap();
}