A QUIC implementation in pure Go

quic-go is an implementation of the QUIC protocol (RFC 9000, RFC 9001, RFC 9002) in Go. It has support for HTTP/3 (RFC 9114), including QPACK (RFC 9204) and HTTP Datagrams (RFC 9297).

In addition to these base RFCs, it also implements the following RFCs:

• Unreliable Datagram Extension (RFC 9221)
• Datagram Packetization Layer Path MTU Discovery (DPLPMTUD, RFC 8899)
• QUIC Version 2 (RFC 9369)
• QUIC Event Logging using qlog (draft-ietf-quic-qlog-main-schema and draft-ietf-quic-qlog-quic-events)
• QUIC Stream Resets with Partial Delivery (draft-ietf-quic-reliable-stream-reset)

Support for WebTransport over HTTP/3 (draft-ietf-webtrans-http3) is implemented in webtransport-go.

Detailed documentation can be found on quic-go.net.

FIPS 140-3

Starting with v0.60, quic-go supports use in FIPS 140-3 environments when built with Go 1.26 or newer, using Go standard library cryptography for the QUIC code paths relevant in FIPS mode; see FIPS140.md for details.

Projects using quic-go

Project	Description	Stars
AdGuardHome	Free and open source, powerful network-wide ads & trackers blocking DNS server.
algernon	Small self-contained pure-Go web server with Lua, Markdown, HTTP/2, QUIC, Redis and PostgreSQL support
caddy	Fast, multi-platform web server with automatic HTTPS
cloudflared	A tunneling daemon that proxies traffic from the Cloudflare network to your origins
frp	A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet
go-libp2p	libp2p implementation in Go, powering Kubo (IPFS) and Lotus (Filecoin), among others
gost	A simple security tunnel written in Go
Hysteria	A powerful, lightning fast and censorship resistant proxy
Mercure	An open, easy, fast, reliable and battery-efficient solution for real-time communications
nodepass	A secure, efficient TCP/UDP tunneling solution that delivers fast, reliable access across network restrictions using pre-established TCP/QUIC/WebSocket or HTTP/2 connections.
OONI Probe	Next generation OONI Probe. Library and CLI tool.
reverst	Reverse Tunnels in Go over HTTP/3 and QUIC
RoadRunner	High-performance PHP application server, process manager written in Go and powered with plugins
syncthing	Open Source Continuous File Synchronization
traefik	The Cloud Native Application Proxy
v2ray-core	A platform for building proxies to bypass network restrictions
YoMo	Streaming Serverless Framework for Geo-distributed System

If you'd like to see your project added to this list, please send us a PR.

Release Policy

quic-go always aims to support the latest two Go releases.

Contributing

We are always happy to welcome new contributors! We have a number of self-contained issues that are suitable for first-time contributors, they are tagged with help wanted. If you have any questions, please feel free to reach out by opening an issue or leaving a comment.

License

The code is licensed under the MIT license. The logo and brand assets are excluded from the MIT license. See assets/LICENSE.md for the full usage policy and details.