MOQ Wiki

imquic (Meetecho)

4 min read

Language: C Organization: Meetecho Maintainer: lorenzo-miniero GitHub: meetecho/imquic POC relay: lminiero.it port 9000 (raw QUIC + WebTransport; draft-18 since May 18, 2026, draft-19 deployed July 18 and merged to main July 19, 2026 for the Vienna Hackathon)

Overview

A C library for QUIC that includes MOQ Transport support alongside RTP over QUIC (RoQ). Built as part of the Janus WebRTC gateway ecosystem.

History

  • 2026-05-18: Shipped IETF draft-18 — the second open-source implementation to do so (after moq-dev).
  • 2026-05-20: draft-18 merged to main via PR #25 (also folding in a RoQ demos refactor, PR #26); second open-source impl with draft-18 in main, a 6-day spec-to-main cycle.

Draft Support

  • draft-19 (merged to main) — PR #32 “Add support for MoQT v19” (lminiero, opened July 8) merged July 19 (+1124/−211) — the first implementation PR explicitly targeting draft-19, so main now carries draft-19 (previously the running relay was ahead of the repo). A first draft-19 build had been deployed to the lminiero.it:9000 POC relay for the July-18 Vienna Hackathon; the July-19 merge folded it into main, followed by relay fixes (“Allow REQUEST_UPDATE to PUBLISH as a subscriber”, FORWARD-related relay fixes, PUBLISH tweaks). The bulk of the draft-18 → -19 delta is the new filters: serialization/deserialization works and the basic filters function, but OBJECT_PROPERTY_FILTER / TRACK_PROPERTY_FILTER are currently ignored (open question on their intended semantics — echoed by ianswett’s moq-transport #1816 “Range filters only filter integer Properties” and Luke Curley’s July-19 stance that Hang will likely never implement filters).
  • draft-18 (since May 18, 2026) — partial: most of the wire-format changes from the draft-17 → draft-18 changelog (SUBGROUP_HEADER FIRST_OBJECT bit, FETCH ID delta encoding, PADDING message, SUBSCRIBE_TRACKS split from SUBSCRIBE_NAMESPACE, REQUEST_UPDATE on both, redirect via REQUEST_ERROR, new error codes); initially missing REQUEST_UPDATE for SUBSCRIBE_NAMESPACE / SUBSCRIBE_TRACKS
  • draft-16 and draft-17 (version range: 0xff000010 to 0xff000011) — prior supported set
  • Supports version negotiation - can offer all supported versions or pin to a specific one
  • Previously supported draft-11 through draft-16; draft-14 was dropped when moving to v17
  • Not all features of all versions are fully implemented

Public Infrastructure

  • Relay at lminiero.it:9000 (raw QUIC and WebTransport), tracking draft-18 main; running a first draft-19 build as of July 18, 2026 (partial filter support — see Draft Support)

Recent Highlights

Day-by-day PR/issue history lives in the wiki log; this section keeps only durable milestones.

  • First draft-19 relay deployment in the ecosystem, then draft-19 merged to main — Miniero stood up a draft-19 build of the lminiero.it:9000 relay for the July-18 Vienna Hackathon and put out a call for draft-19 peers, then merged PR #32 to main July 19 (+1124/−211), making imquic the first tracked-repo implementation with draft-19 in main. Filter serialization/deserialization and the basic filters work; OBJECT_PROPERTY_FILTER / TRACK_PROPERTY_FILTER are ignored pending clarity on their semantics. The wiki’s first tracked draft-19 interop endpoint (vs moq-dev’s draft-19 client/relay support), though the official interop target remains draft-18 per afrind. On July 20 the relay achieved the ecosystem’s first cross-implementation draft-19 interop — Luke Curley’s moq-cli (moq-dev) published/subscribed against lminiero.it:9000 in forced draft-19 (76,804 bytes, 5.23 s, ffprobe-validated H.264) as well as forced draft-18.
  • Live-media LOC demos — PR #27 merged at the June 2026 London hackathon: imquic-moq-loc-send captures webcam + mic and publishes audio (Opus) + video (H.264) LOC tracks; imquic-moq-loc-recv subscribes, decodes, and renders via SDL2. Replaces the prior moq-clock-only demos and uses MSF for the catalog. See moq-loc.
  • Push-to-talk conversational demo — PR #31 merged June 19, with a live web demo at lminiero.it/moqp2t/: every client subscribes to the push2talk namespace and holding spacebar publishes an audio track carried over QUIC datagrams. Client side built on Moqtail, plus a native demo in the repo — the first publicly-reachable real-time conversational-media app over MoQ the wiki has tracked, exercising the PUBLISH-driven (vs SUBSCRIBE-driven) delivery pattern.
  • LOC private-object payload prefix — PR #29 added an explicit payload prefix for LOC private objects, resolving the omit-the-block-vs-write-a-zero-count encoding question surfaced while building the LOC demos.
  • Relay hardening — fixed a nested-namespace SUBSCRIBE_NAMESPACE / SUBSCRIBE_TRACKS notification bug found in interop testing (PR #30), plus follow-on NAMESPACE / NAMESPACE_DONE and LOC-sender crash fixes, and partial DYNAMIC_GROUPS / NEW_GROUP_REQUEST support in the relay demo.

Interop

  • Registered in interop-runner matrix; became a registered draft-18 endpoint (June 2026, advertising draft-18/17/16), one of the first two draft-18 registrations alongside Nokia’s moqt-nr
  • First v17 interop achieved with moq-dev (moq-dev/moq, Rust publisher + JS subscriber) (2026-04-01)
  • London hackathon (June 2026): cross-impl object exchange with Kota Yatagai’s Moqtopus — Kota fixed a reciprocal publisher priority-bit bug in imquic (PR #28) — and with Suhas Nandakumar’s quicr/moq-web
  • Active interop testing at IETF 125 Shenzhen and Boulder hackathon

Related

Graph View

DraftsConceptsPeopleImplDiscInteropOtherTags
DraftsConceptsPeopleImplDiscInteropOtherTags

Backlinks