MoQT draft-10 Control Message Types

MoQT draft-10 defines 26 control message types and marks 0 code points reserved — 26 rows in all. The type code is the first field of every control message, so this is the table a decoder dispatches on.

The rows come from the draft's own Control Messages table, not from a hand-kept list. For the field layout of a message, follow its section link into the draft-10 text.

What changed since draft-09

No control message type was added, removed, renumbered or renamed between draft-09 and draft-10.

Control message types

Type	Message	Defined in	Test vectors
0x40	CLIENT_SETUP	§8.2	6
0x41	SERVER_SETUP	§8.2	3
0x10	GOAWAY	§8.3	4
0x15	MAX_SUBSCRIBE_ID	§8.4	3
0x1A	SUBSCRIBES_BLOCKED	§8.5	3
0x3	SUBSCRIBE	§8.6	9
0x4	SUBSCRIBE_OK	§8.7	5
0x5	SUBSCRIBE_ERROR	§8.8	8
0xA	UNSUBSCRIBE	§8.10	3
0x2	SUBSCRIBE_UPDATE	§8.9	4
0xB	SUBSCRIBE_DONE	§8.11	8
0x16	FETCH	§8.12	6
0x18	FETCH_OK	§8.13	3
0x19	FETCH_ERROR	§8.14	6
0x17	FETCH_CANCEL	§8.15	2
0xD	TRACK_STATUS_REQUEST	§8.16	2
0xE	TRACK_STATUS	§8.17	6
0x6	ANNOUNCE	§8.18	3
0x7	ANNOUNCE_OK	§8.19	3
0x8	ANNOUNCE_ERROR	§8.20	4
0x9	UNANNOUNCE	§8.21	2
0xC	ANNOUNCE_CANCEL	§8.22	2
0x11	SUBSCRIBE_ANNOUNCES	§8.23	3
0x12	SUBSCRIBE_ANNOUNCES_OK	§8.24	2
0x13	SUBSCRIBE_ANNOUNCES_ERROR	§8.25	6
0x14	UNSUBSCRIBE_ANNOUNCES	§8.26	2

26 rows from the Control Messages table of draft-10. The test-vector column counts the encode/decode vectors moqtap publishes for that type; it is a cross-check, not part of the registry.

Caution

One row of draft-10's Control Messages table has an unclosed parenthesis in the published document — 0x13. The name and section above were recovered from the row's cross-reference link. This is a defect in the draft's rendering, not in the code point.

Cross-check against the test-vector corpus

moqtap publishes 108 encode/decode vectors for draft-10 across 26 message types, and all three moqtap implementations validate against them. Comparing that corpus with the draft's table is an independent check on this page: all 26 assigned types have vectors.

Neither source has a message type the other lacks.

Where these numbers come from

The table is parsed from table-2 of draft-ietf-moq-transport-10, in the frozen rendering this site keeps at spec-sources/draft-10.html. That file hashes to 9362ac6d25a9fcbeda57e28234114c8a75cc9515b4187d9cdd3745b0507dd8c3, which is the same source_sha256 the moqtap codec's committed registry extraction records for draft-10 — the two inputs are provably the same document.

Control message types are not an IANA registry in the drafts, so they are not part of the codec's registry extraction; the table id above is taken from that extraction's record of the tables it deliberately excluded, which is how this page finds the right table without guessing.

draft-10 error codes · Read draft-10 section by section

Control message types in other drafts

moqtap covers drafts 07 through 20.

• draft-20 — 25 types
• draft-19 — 24 types
• draft-18 — 24 types
• draft-17 — 23 types
• draft-16 — 27 types
• draft-15 — 26 types
• draft-14 — 33 types
• draft-13 — 33 types
• draft-12 — 32 types
• draft-11 — 29 types
• draft-10 — 26 types
• draft-09 — 26 types
• draft-08 — 26 types
• draft-07 — 25 types

All MoQT control message types, draft by draft · How control messages work