# Iroh Quinn > This is a fork based on [quinn](https://github.com/quinn-rs/quinn), maintained > by [n0](https://github.com/n0-computer). Currently published to crates.io under > `iroh-quinn`. ## Main differences to upstream quinn - Small API improvements - Implements additional QUIC extensions - Multipath - QAD - QNT - Expanded support for QLOG Quinn is a pure-rust, async-compatible implementation of the IETF [QUIC][quic] transport protocol. - Simultaneous client/server operation - Ordered and unordered stream reads for improved performance - Works on stable Rust, tested on Linux, macOS and Windows - Pluggable cryptography, with a standard implementation backed by [rustls][rustls] and [*ring*][ring] - Application-layer datagrams for small, unreliable messages - Future-based async API - Minimum supported Rust version of 1.83.0 ## License Copyright 2025 The quinn developers Copyright 2025 N0, INC. This project is licensed under either of * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) at your option. ## Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.