# quinn-rs/quinn

Async-friendly QUIC implementation in Rust

Repository: https://github.com/quinn-rs/quinn
Canonical: https://ross.abutalabs.com/products/quinn
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: quic, protocol, rust, hacktoberfest
Last push: 2026-08-23T05:20:15+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 3074, "days_push": 10, "days_rel": 16, "gap_med": 13.5, "n_releases_24m": 23}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5232, forks 606 (observed 2026-08-28T04:09:13.467158+00:00)

## What it is
Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol, with a high-level tokio-based API plus a sans-I/O protocol state machine. It supports client/server operation, streams, datagrams, and pluggable cryptography via rustls.

## Use cases
- implement a QUIC server or client in Rust
- build an HTTP/3 transport layer
- replace TCP with a low-latency encrypted transport
- embed QUIC in a custom event loop via a sans-I/O state machine
- send small unreliable messages alongside reliable streams

## When to choose
- you need a mature, pure-Rust QUIC stack with an async API
- you want pluggable cryptography and stable-Rust compatibility
- you need both reliable streams and unreliable datagrams over one connection

## When to avoid
- you need a C or C++ QUIC library
- your project is not Rust-based
- you only need simple TCP/HTTP without QUIC's benefits

## Facets
- artifact type: library
- maturity: stable
- function: networking, http-server, http-client, cryptography, concurrency
- domain: networking, web-development, developer-tools, performance
- platform: rust, windows, cross-platform
- tags: quic, transport-protocol, tokio, async, sans-io, rustls, udp, http3, linux, macos

## Member repositories
- quinn-rs/quinn (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:13.467158+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:59:38.928190+00:00, confidence not recorded.
  - readme: https://github.com/quinn-rs/quinn (fetched 2026-08-28T04:09:13.467158+00:00, sha 58dfa54a7e89)
  - registry_crates: https://crates.io/api/v1/crates/quinn (fetched 2026-08-29T08:54:54.384214+00:00, sha 15f287eea0bf)
- Data as of 2026-08-30T08:39:29.467469+00:00.