Transport: Inclusion of multiple Stream Frames for the same Stream ID

[gloinul]

draft-ietf-quic-transport-03, Section 8.1 says:

Stream multiplexing is achieved by interleaving STREAM frames from
multiple streams into one or more QUIC packets. A single QUIC packet
MAY bundle STREAM frames from multiple streams.

The inclusion of multiple stream frames for the same frame is not clear in the above. Is it allowed or not?

[martinthomson]

I'm not sure that I understand. Doesn't the final sentence answer your question?

[gloinul]

No, there is a difference between one stream frame per stream ID aggregated in the same packet, and multiple stream frames for the same stream ID. The later is not clear that it is allowed with above formulation. But, I guess that based on what is in the Stream Frame you can have multiple stream frames for the same ID, so this is likely an editorial issue on the above text to make it explicit.

[martinthomson]

Oh, now I understand. Well, that's suboptimal, but permissible. (You said "multiple stream frames for the same frame", where you meant same stream.) Do you think that removing "from multiple streams" would clarify this point?

[gloinul]

I would rather be explicit and say; "A single QUIC packet MAY bundle multiple STREAM frames from one or more stream IDs."