Crate qmux 

QMux protocol (draft-ietf-quic-qmux-02) over reliable transports.

Provides QUIC-style multiplexed streams over TCP, TLS, and WebSocket. Speaks draft-02 by default, negotiating down to draft-01 or draft-00, with backwards compatibility for the legacy webtransport wire format.

Layout

The crate root holds the transport-independent session API: Session and its SendStream / RecvStream halves, plus the Config, Version, and Error types they share.

Everything tied to a specific transport lives in that transport’s module, so the generic names stay unambiguous when several are in scope at once:

Module	Entry point	Feature
tcp	tcp::Config	tcp
uds	uds::Config	uds (Unix only)
tls	tls::Client, tls::Server	tls
ws	ws::Client, ws::Server, ws::Upgraded	ws
transport	transport::Stream	tcp or uds

For anything the built-in modules don’t cover, wrap an AsyncRead + AsyncWrite byte stream in transport::Stream, or implement transport::Transport yourself, and pass it to Session::connect / Session::accept.

Modules

tcp

Plain TCP transport.

tls

TLS over TCP transport.

transport

Transport abstraction and the byte-stream transport::Stream implementation.

uds

Unix domain socket transport.

ws

WebSocket transport.

Structs

Config

Configuration for a QMux session.

RecvStream

The receive half of a multiplexed stream.

SendStream

The send half of a multiplexed stream.

Session

A multiplexed session over a reliable transport.

StreamId

A QUIC-style stream identifier encoding direction and initiator.

TcpStats

Kernel TCP statistics for a socket, via TCP_INFO (Linux) or TCP_CONNECTION_INFO (macOS).

Enums

Error

Errors that can occur during QMux session and stream operations.

Protocol

How the application-level protocol is determined for a session.

StreamDir

Stream direction.

Version

The wire format version used for frame encoding/decoding.

Constants

ALPNS

All supported ALPN identifiers, in preference order.

Traits

SocketStats

Live statistics for the connection underneath a QMux session.

Type Aliases

SharedSocketStats

A shared handle to a transport’s statistics.