Quinn is an implementation of the QUIC network protocol currently undergoing standardization by the IETF. It is currently suitable for experimental use. The implementation is split up into the state machine crate quinn-proto which performs no I/O internally and can be tested deterministically, and a high-level tokio-compatible API in quinn. See quinn/examples/ for usage. Quinn is the subject of a RustFest Paris (May 2018) presentation; you can also get the slides (and the animation about head-of-line blocking). Video of the talk is available on YouTube. Since this presentation, Quinn has been merged with quicr, another Rust implementation.