quiche

Cloudflare quiche is an open-source Rust implementation of the QUIC transport protocol and HTTP/3 designed to give developers a performant, flexible foundation for building modern networked applications and services, especially where low latency and efficient multiplexed streams matter. It is a “sans-io” library, meaning it implements the core QUIC and HTTP/3 state machines and logic without assuming how input/output should be done, so applications remain responsible for socket handling, event loops, timers, and other system-dependent I/O work. This design choice makes quiche highly adaptable: it can be used in custom servers, clients, proxies, embedded systems, and experimental protocols with QUIC’s features like 0-RTT, connection migration, and built-in encryption.