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More explicit handling for end-of-group bit #1118

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More explicit handling for end-of-group bit #1118

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32 changes: 26 additions & 6 deletions draft-ietf-moq-transport.md
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Expand Up @@ -3234,8 +3234,18 @@ There are 8 defined Type values for OBJECT_DATAGRAM:
| 0x07 | Yes | Yes | No |
|------|---------------|------------|-----------|

For Type values where End of Group is Yes, the Object is the last Object in the
Group.
For Type values where End of Group is Yes, the effect is the same as receiving
the current Datagram followed by an OBJECT_DATAGRAM_STATUS with the following
values:

~~~
Track Alias = datagram.Track Alias
Group ID = datagram.Group ID
Object ID = datagram.Object ID + 1
Publisher Priority = datagram.Publisher Priority
Extension Headers Length = 0
Object Status = End of Group
~~~

For Type values where Extensions Present is No, Extensions Headers Length is not
present and the Object has no extensions. When Extensions Present is Yes,
Expand Down Expand Up @@ -3361,10 +3371,20 @@ There are 12 defined Type values for SUBGROUP_HEADER:
| 0x1D | Yes | N/A | Yes | Yes |
|------|---------------|-----------------|------------|--------------|

For Type values where Contains End of Group is Yes, the last Object in this
Subgroup stream before a FIN is the last Object in the Group. If the Subgroup
stream is terminated with a RESET_STREAM or RESET_STREAM_AT, the receiver cannot
determine the End of Group Object ID.
For Type values where Contains End of Group is Yes, when the Subgroup stream is
terminated with a FIN, the effect is the same as receiving an additional Object
in the Subgroup with the following values:

~~~
Object ID Delta = 0
Extension Headers Length = 0
Object Payload Length = 0
Object Status = End of Group
~~~

If such a Subgroup stream is terminated with a RESET_STREAM or RESET_STREAM_AT,
no End of Group object can be inferred. If the stream contains no Objects,
Object 0 is the End of Group.

For Type values where Subgroup ID Field Present is No, there is no explicit
Subgroup ID field in the header and the Subgroup ID is either 0 (for Types
Expand Down