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MOQtail n1 Osaka

MOQtail

relay.n1.osa.moqtail.dev:443

Sweep of 2026-11-12 01:29 UTC Latest report JSON

Identifies itself as
moqtail/0.18.0+c1f88e7
Measured
2026-11-12 01:36 UTC
Measured from
Helsinki, Finland
Probe
moqtap-probe 0.7.0 (5285dea0a814)
Drafts negotiated
draft 22
QUIC WT IPv4

A deployment of MOQtail. About this endpoint

At a glance

Protocols accepted
moqt-22, h3
Media delivery
delivered
Violations recorded
none

Certificate

Subject
CN=*.moqtail.dev
Issuer
C=AT, O=ZeroSSL GmbH, CN=ZeroSSL ECC DV SSL CA 2
Valid until
2027-02-07 88 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
22 QUIC ✓ err 269 ms ✓ err 269 ms ✓ err 269 ms ✓ ok 268 ms ✓ ok 269 ms ✓ ok 268 ms ✓ ok 268 ms
  • SUBSCRIBE · draft 22 · QUIC REQUEST_ERROR 16 “Unknown track namespace”.
  • FETCH · draft 22 · QUIC REQUEST_ERROR 16 “Track does not exist”.
  • TRACK_STATUS · draft 22 · QUIC REQUEST_ERROR 16 “No publisher found”.

Media delivery

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

Object delivered end to end draft 22 · QUIC
Objects delivered
7/7
Groups / subgroups
2 / 3
Subscribe answered
534ms
First object
268ms
Stream framing
streams kept as sent
Second subscriber
Same object delivered to a second subscriber
Offers a track
subscription not sent

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.

Measured draft 22 · 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 265 ms — —
second publisher disconnected serving The relay accepted it and subscribed to it. accepted, REQUEST_OK in 268 ms identical payloads, differing payloads —
Track Objects From When the publisher left Ended by
identical payloads each object once 14 delivered — ended by the relay PUBLISH_DONE 2 “Publisher disconnected”
differing payloads each object once 14 delivered second publisher ended by the relay PUBLISH_DONE 2 “Publisher disconnected”

A fresh subscription after the publisher left: delivered, the relay subscribed to the first publisher, first object in 543 ms.

MUST

Ended or stalled a subscription when its publisher left, while the other publisher of the track was still accepted and reachable.

Draft 22, on the track with identical payloads

Requirement
A relay must forward Objects of one track from every publisher of it to the matching subscriptions.
Specification
draft-ietf-moq-transport-22, Section 7.3
MUST

Ended or stalled a subscription when its publisher left, while the other publisher of the track was still accepted and reachable.

Draft 22, on the track with differing payloads

Requirement
A relay must forward Objects of one track from every publisher of it to the matching subscriptions.
Specification
draft-ietf-moq-transport-22, Section 7.3
MUST

Accepted a publisher and never subscribed to it while a subscription to its namespace was live.

Draft 22, on the first publisher

Requirement
A relay must send a SUBSCRIBE to every publisher that announced a matching namespace.
Specification
draft-ietf-moq-transport-22, Section 7.6

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 22 · QUIC

  • 0x06 max_filter_ranges = 32
  • 0x07 moqt_implementation = moqtail/0.18.0+c1f88e7
  • 0x08 max_request_updates = 0
  • 0x09 not defined by this draft = 0x00c0ff01 (max_control_message_size in 23)
  • 0x40b54 not defined by this draft = 249231502429549020
  • 0x40b56 not defined by this draft = 2

Measured by sweep

SweepProbeReachableDraftsRequests answeredDeliveryOffers a trackCertificate valid untilViolationsTwo publishers
12 Nov 20260.7.0 5285dea0a814yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-02-07—no switch-over, publisher on standby
11 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-02-07—no defects
10 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-02-07—no defects
9 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-02-07—no defects
8 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
7 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
6 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
5 Nov 20260.7.0 ee97a7ac6179yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
4 Nov 20260.7.0 0da3083d8bdeyesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
3 Nov 20260.7.0 fcd05c5302c4yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
2 Nov 20260.7.0 fcd05c5302c4yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
1 Nov 20260.7.0 fcd05c5302c4yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
31 Oct 20260.7.0 fcd05c5302c4yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
30 Oct 20260.7.0 fcd05c5302c4yesdraft 2222 QUIC: 7 of 7Object delivered end to end22 QUICsubscription not sent2027-01-09—no defects
29 Oct 20260.7.0 632a80524083yesdraft 1818 QUIC: 7 of 7Object delivered end to end18 QUICrelay offered the track2027-01-09—no defects
27 Oct 20260.5.0 74c287bac814yesdraft 1818 QUIC: 4 of 7Namespace and subscription accepted, nothing routed to the publisher18 QUIC—2027-01-09——

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.