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MOQtail WatchParty

MOQtail

watch-party.moqtail.dev:4446

QUIC WT draft 16 IPv4

A deployment of MOQtail. Everything below was measured on this deployment, at whatever version and configuration it was running — it is not a measurement of that codebase. About this endpoint

At a glance

Identifies itself as
moqtail/0.14.1+fbdbc75
Protocols accepted
moqt-16, h3
Media delivery
Namespace accepted, track never asked for
Violations recorded
none

Certificate

Subject
CN=*.moqtail.dev
Issuer
C=US, O=Let's Encrypt, CN=YR1
Valid until
2026-12-09 34 days left
Trust
Publicly trusted
Verification
Completed with the certificate verified

Control messages

Which control messages this endpoint answered, per draft. An error reply is still an answer — ok and err are both support; what is recorded as missing is a message that got no answer at all. A dash is neither: it means the exchange ended on our side, so nothing about this endpoint was measured there.

Draft SUBSCRIBEFETCHTRACK_STATUSSUBSCRIBE_NAMESPACEPUBLISH_NAMESPACESUBSCRIBE_TRACKSPUBLISH
16 QUIC ✓ err ✓ err ✗ ✓ ok ✓ ok · ✗

Media delivery

One publisher and two subscribers, to see whether an object published through this endpoint reaches a client that asked for it.

Namespace accepted, track never asked for draft 16 · QUIC

The subscription routed to the publisher could not be read. The endpoint broke a rule of the draft: a request must not use a Request ID at or above the maximum the receiver granted.

Two publishers of one track

Two publishers announce the same namespace and publish the same tracks, one with identical payloads and one with payloads that differ by publisher. Partway through, the publisher serving the subscribers disconnects without notice. A fresh subscription, sent afterwards, shows whether the remaining publisher could still be reached.

The relay closed a serving publisher’s session early draft 16 · QUIC
Publisher Role Announcement Subscribed to Ended by the relay
first publisher closed The relay closed its session while the other publisher was present. accepted, REQUEST_OK in 29 ms — Session ended: an unreadable reply
second publisher standby The relay accepted it and never subscribed to it while a subscriber was waiting. accepted, REQUEST_OK in 26 ms — —
Track Objects From When the publisher left Ended by
identical payloads nothing arrived — not measured —
differing payloads nothing arrived — not measured —

Specification violations

None recorded. Nothing this endpoint sent broke a requirement the probe checks — which is not the same as saying it implements the draft completely.

Setup parameters

What this endpoint sent back in its setup response, per draft. A parameter with no name is a code point the negotiated draft does not define.

draft 16 · QUIC

  • 0x02 max_request_id = 2305843009213694000
  • 0x07 moqt_implementation = moqtail/0.14.1+fbdbc75

History

9 sweeps, newest first. A step where the probe build or the measuring location changed is marked, and is not read as a change of the relay.

  • 27 Oct 2026 → 29 Oct 2026 · measured differently

    • Offering a track: not measured → not attempted.
SweepReachableDraftsDeliveryOffers a trackViolationsTwo publishers
5 Nov 2026yes16Namespace accepted, track never asked fornot attempted—no defects
4 Nov 2026yes16Namespace accepted, track never asked fornot attempted—no defects
3 Nov 2026yes16Namespace accepted, track never asked fornot attempted—no defects
2 Nov 2026yes16Namespace accepted, track never asked fornot attempted—no defects
1 Nov 2026yes16Namespace accepted, track never asked fornot attempted—no defects
31 Oct 2026yes16Namespace accepted, track never asked fornot attempted—no defects
30 Oct 2026yes16Namespace accepted, track never asked fornot attempted—no defects
29 Oct 2026yes16Namespace accepted, track never asked fornot attempted—no defects
27 Oct 2026yes16Namespace accepted, track never asked for———

Notes

  • — The endpoint is up and refused the offered protocols on at least one transport.

Is this your relay?

If something here is wrong, tell us — we keep what each result rests on, so a disputed one gets re-read rather than re-argued. We can also run this against endpoints that are not public.