QUIC Extensions Interop

NB As of 2025-06-09 the wiki is archived and these pages are no longer actively maintained. Please see https://github.com/quicwg/quicwg.github.io for a better source of ancilliary information to form QUIC WG documents.

Overview

This document lists QUIC extensions participating in the QUIC extension interop.

• QUIC Version draft-27 (vn=ff00001b)

• HTTP 3 (ALPN=h3-27)

• HTTP 0.9/1.1 (ALPN=hq-27)

• Record interop results here

• List of implementations here

Extensions Tested

Feel free to add your extension to this list. When picking a code, please do not reuse letters already defined in the main implementation draft.

Extension	code	details
Delayed ACKs	a	TBD
Loss bits	q	TBD
Datagram	g	Can be tested using Siduck
Quic-bit-grease allowed	b	Tested by just running against a server, and checking whether Quic Bit is greased in received packets
Quic-bit-grease implemented	i	Tested by just running against a server, and checking whether it accepts greased Quic Bits
Time-stamp	t	TBD