moxygen
Metafb.mvfst.net:9448/moq-relay
Sweep of 2026-10-27 01:21 UTC Latest report JSON
- Identifies itself as
- Meta MoQ C++ Draft-14
- Measured
- 2026-10-27 01:21 UTC
- Probe
- moqtap-probe 0.5.0 (74c287bac814)
- Drafts negotiated
- drafts 14, 16, 18, 22
- Drafts the operator lists
- drafts 16, 18, 22
A deployment of Moxygen, operated by Meta. About this endpoint
At a glance
- Protocols accepted
- moq-00, h3, moqt-16, moqt-18, moqt-22
- Media delivery
- delivered
- Violations recorded
- none
Certificate
- Subject
- CN=fb.mvfst.net
- Issuer
- C=US, O=Let's Encrypt, CN=YE1
- Valid until
- 2026-12-24 59 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 | SUBSCRIBE | FETCH | TRACK_STATUS | SUBSCRIBE_NAMESPACE | PUBLISH_NAMESPACE | SUBSCRIBE_TRACKS | PUBLISH |
|---|---|---|---|---|---|---|---|
| 22 QUIC | ✓ err 109 ms | ✓ err 110 ms | ✓ err 111 ms | ✓ ok 109 ms | ✓ ok 109 ms | ✓ ok 109 ms | ✓ ok 109 ms |
| 18 QUIC | ✓ err 130 ms | ✓ err 123 ms | ✓ err 122 ms | ✓ ok 118 ms | ✓ ok 119 ms | ✓ ok 118 ms | ✓ ok 123 ms |
| 16 QUIC | ✓ err 115 ms | ✓ err 117 ms | ✓ err 123 ms | ✓ ok 123 ms | ✓ ok 121 ms | · | ✓ ok 124 ms |
| 14 QUIC | ✓ err 113 ms | ✓ err 111 ms | ✓ err 112 ms | ✓ ok 110 ms | ✓ ok 110 ms | · | ✓ ok 111 ms |
- SUBSCRIBE · drafts 16, 18, 22 · QUIC REQUEST_ERROR 16 “no such namespace or track”.
- SUBSCRIBE · draft 14 · QUIC SUBSCRIBE_ERROR 16 “no such namespace or track”.
- FETCH · drafts 16, 18, 22 · QUIC REQUEST_ERROR 16 “no upstream for fetch”.
- FETCH · draft 14 · QUIC FETCH_ERROR 16 “no upstream for fetch”.
- TRACK_STATUS · drafts 16, 18, 22 · QUIC REQUEST_ERROR 16 “no such namespace or track”.
- TRACK_STATUS · draft 14 · QUIC TRACK_STATUS_ERROR 16 “no such namespace or track”.
Media delivery
One publisher and two subscribers, to see whether an object published through this endpoint reaches a client that asked for it.
- Objects delivered
- 7/7
- Groups / subgroups
- 2 / 3
- Subscribe answered
- 239ms
- First object
- 113ms
- Stream framing
- streams kept as sent
- Second subscriber
- Same object delivered to a second subscriber
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
- 0x07 moqt_implementation = Meta MoQ C++ Draft-14
draft 18 · QUIC
- 0x07 moqt_implementation = Meta MoQ C++ Draft-14
draft 16 · QUIC
- 0x02 max_request_id = 100
- 0x04 max_auth_token_cache_size = 1024
- 0x07 moqt_implementation = Meta MoQ C++ Draft-14
draft 14 · QUIC
- 0x02 max_request_id = 100
- 0x04 max_auth_token_cache_size = 1024
- 0x07 not defined by this draft = Meta MoQ C++ Draft-14 (moqt_implementation in 15–22)
Measured by sweep
| Sweep | Probe | Reachable | Drafts | Requests answered | Delivery | Offers a track | Certificate valid until | Violations |
|---|---|---|---|---|---|---|---|---|
| 27 Oct 2026 | 0.5.0 74c287bac814 | yes | drafts 14, 16, 18, 22 | 22 QUIC: 7 of 718 QUIC: 7 of 716 QUIC: 6 of 614 QUIC: 6 of 6 | Object delivered end to end22 QUIC | — | 2026-12-24 | — |
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.