qmux

A Rust implementation of the QMux protocol (draft-ietf-quic-qmux-00).

QMux brings QUIC's multiplexed streams and flow control to reliable, ordered byte-stream transports like TCP and WebSockets. It allows applications built for QUIC to seamlessly fall back to TCP/TLS when UDP is blocked by network middleboxes, without maintaining separate protocol implementations.

The protocol reuses QUIC frame types and semantics while adapting them for stream-based transports, providing multiplexed streams with flow control and optional unreliable datagrams.

Install

[dependencies]
qmux = "0.0.1"

Features

• tcp - QMux over raw TCP streams
• tls - QMux over TLS (via tokio-rustls)
• ws - QMux over WebSockets (via tokio-tungstenite)
• wss - QMux over secure WebSockets (WebSocket + TLS)

Default features: tls, wss

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.