Google QUICHE MoQT (quiche-moq)

Language: C++ Organization: Google Primary developers: martin-duke, Victor Vasiliev, with contributions from asedeno, dschinazi GitHub: google/quiche (MoQT module within Google’s QUICHE library)

Overview

A substantial C++ MoQT implementation inside Google’s QUICHE library (part of Chromium). Includes ~74+ source files plus a tools directory with relay, server, client, chat, and simulator applications. This is one of the more actively developed implementations in the ecosystem, with commits through April 2026.

Draft Support

• draft-16 — current target for the public relay
• Passed 41/41 conformance tests from alan-frindell (Feb 2026)

Public Infrastructure

• quichemoq.dev:443 — martin-duke’s relay (draft-16)
• Registered in interop-runner as quiche-moq

Interop

• Successfully tested with moxygen, moq-rs, and moqtail at Boulder hackathon (Feb 2026)
• Registered in the interop-runner matrix

Recent Activity (April 2026)

• Session parameter control API (Apr 22, martin-duke): Commit 1004527761 lets MoqtClient and MoqtServer control session parameters — groundwork for partial-object delivery on the relay.
• moqt_messages.h split (Apr 22, martin-duke): Commit c8ff6dc4 moves non-message-related data structures out of the monolithic messages header — prep refactor before the session-parameter work above.
• Remove moqt::SubscribeWindow (Apr 20, martin-duke): Commit 9843feb drops the SubscribeWindow class, continuing the cleanup of legacy SUBSCRIBE window tracking as draft-17’s PUBLISH/SUBSCRIBE model settles.
• Joining FETCH fix (Apr 14, martin-duke): Limit Joining FETCH to largest_object at time of SUBSCRIBE rather than using current value. Moves responsibility from MoqtOutgoingQueue to the session layer with a new established_ flag. Prepares for implementing REWIND’s joining FETCH aspects.

Disambiguation

There is also a separate Rust project called birneee/quiche_moq by Leon Birne, built on Cloudflare’s quiche crate (a Rust QUIC library). Created 2025-10-17. That project supports drafts 07-13 and 16 but is not in the interop runner. The naming collision is coincidental — both are named after QUIC libraries that happen to share the name “quiche.”

Related

• martin-duke - Primary developer, runs the public relay
• interop-endpoints - Public relay endpoints
• interop-runner - Automated test framework