quiche: The QUIC and HTTP/3 Rust Implementation Chosen by the Cloudflare Edge Network

This is a Rust library implementing the QUIC transport protocol and HTTP/3 in accordance with IETF standards. It is a codebase validated in real production environments, including HTTP/3 support for the Cloudflare edge network, DNS over HTTP/3 on Android, and HTTP/3 integration in curl.

It provides low-level APIs for packet processing and connection state management. Applications must implement socket I/O and timer event loops themselves, while connection configurations such as congestion control, flow control, and ALPN settings can be finely tuned via the Config object.

In addition to the Rust API, it generates a standalone static library that can be linked directly into C/C++ applications. With FFI features enabled, developers unfamiliar with Rust can integrate QUIC communication through a C language interface.

It is suitable for server developers who need direct control over the network stack or client library authors who must ensure HTTP/3 compatibility. It is useful when protocol-level customization is required, rather than for simple HTTP client usage.