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MOQtail WatchParty

MOQtail

watch-party.moqtail.dev:4446

Sweep of 2026-11-08 01:20 UTC Latest report JSON

Identifies itself as
moqtail/0.14.1+fbdbc75
Measured
2026-11-08 01:27 UTC
Measured from
Helsinki, Finland
Probe
moqtap-probe 0.7.0 (ee97a7ac6179)
Drafts negotiated
draft 16
QUIC WT IPv4

A deployment of MOQtail. About this endpoint

At a glance

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 31 days left when measured
Trust
Publicly trusted
Verification
Completed with the certificate verified

Control messages

What each request got back, per draft. ok and err are both answers; ✗ is a request refused or left unanswered; a dash is a request our side did not complete. Times run from the request to its answer; each request waited up to 3,000 ms.

Draft SUBSCRIBEFETCHTRACK_STATUSSUBSCRIBE_NAMESPACEPUBLISH_NAMESPACESUBSCRIBE_TRACKSPUBLISH
16 QUIC ✓ err 26 ms ✓ err 29 ms ✗ 26 ms ✓ ok 26 ms ✓ ok 26 ms · ✗ 26 ms
  • SUBSCRIBE · draft 16 · QUIC REQUEST_ERROR 16 “Unknown track namespace”.
  • FETCH · draft 16 · QUIC REQUEST_ERROR 16 “Track does not exist”.
  • TRACK_STATUS · draft 16 · QUIC Refused. The endpoint closed the session (code 3).
  • PUBLISH · draft 16 · QUIC Refused. The endpoint closed the session (code 3).

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 standby The relay accepted it and never subscribed to it while a subscriber was waiting. accepted, REQUEST_OK in 26 ms — —
second publisher closed The relay closed its session while the other publisher was present. accepted, REQUEST_OK in 26 ms — Session ended: an unreadable reply
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.

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

Measured by sweep

SweepProbeReachableDraftsRequests answeredDeliveryOffers a trackCertificate valid untilViolationsTwo publishers
8 Nov 20260.7.0 ee97a7ac6179yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
7 Nov 20260.7.0 ee97a7ac6179yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
6 Nov 20260.7.0 ee97a7ac6179yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
5 Nov 20260.7.0 ee97a7ac6179yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
4 Nov 20260.7.0 0da3083d8bdeyesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
3 Nov 20260.7.0 fcd05c5302c4yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
2 Nov 20260.7.0 fcd05c5302c4yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
1 Nov 20260.7.0 fcd05c5302c4yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
31 Oct 20260.7.0 fcd05c5302c4yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
30 Oct 20260.7.0 fcd05c5302c4yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
29 Oct 20260.7.0 632a80524083yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUICnot attempted2026-12-09—no defects
27 Oct 20260.5.0 74c287bac814yesdraft 1616 QUIC: 4 of 6Namespace accepted, track never asked for16 QUIC—2026-12-09——

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.