MoQT draft-07 Control Message Types

MoQT draft-07 defines 25 control message types and marks 0 code points reserved — 25 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-07 text.

Where this draft starts

draft-07 is the earliest draft moqtap supports, so there is no previous draft here to compare it with. Start at draft-08 to follow the changes forward.

Control message types

Type	Message	Defined in	Test vectors
0x2	SUBSCRIBE_UPDATE	§6.5	4
0x3	SUBSCRIBE	§6.4	9
0x4	SUBSCRIBE_OK	§6.15	5
0x5	SUBSCRIBE_ERROR	§6.16	7
0x6	ANNOUNCE	§6.21	3
0x7	ANNOUNCE_OK	§6.9	3
0x8	ANNOUNCE_ERROR	§6.10	3
0x9	UNANNOUNCE	§6.22	2
0xA	UNSUBSCRIBE	§6.6	3
0xB	SUBSCRIBE_DONE	§6.19	8
0xC	ANNOUNCE_CANCEL	§6.11	2
0xD	TRACK_STATUS_REQUEST	§6.12	2
0xE	TRACK_STATUS	§6.23	6
0x10	GOAWAY	§6.3	4
0x11	SUBSCRIBE_ANNOUNCES	§6.13	3
0x12	SUBSCRIBE_ANNOUNCES_OK	§6.24	2
0x13	SUBSCRIBE_ANNOUNCES_ERROR	§6.25	3
0x14	UNSUBSCRIBE_ANNOUNCES	§6.14	2
0x15	MAX_SUBSCRIBE_ID	§6.20	3
0x16	FETCH	§6.7	4
0x17	FETCH_CANCEL	§6.8	2
0x18	FETCH_OK	§6.17	3
0x19	FETCH_ERROR	§6.18	4
0x40	CLIENT_SETUP	§6.2	6
0x41	SERVER_SETUP	§6.2	3

25 rows from the Control Messages table of draft-07. 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-07'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 96 encode/decode vectors for draft-07 across 25 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 25 assigned types have vectors.

Neither source has a message type the other lacks.

Where these numbers come from

The table is parsed from table-4 of draft-ietf-moq-transport-07, in the frozen rendering this site keeps at spec-sources/draft-07.html. That file hashes to 53eb52578fca0c2415fff80678a9d2def9dfc47bb5c2c669c1c1313584ba3aa5, which is the same source_sha256 the moqtap codec's committed registry extraction records for draft-07 — 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-07 error codes · Read draft-07 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