Minutes interim-2024-moq-26: Wed 16:00
minutes-interim-2024-moq-26-202410161600-00

16 October 2024 MoQ Virtual Interim

Attendees:

1. Martin Duke (Google)
2. Magnus Westerlund (Ericsson)
3. Sebastian Rust (TU Darmstadt)
4. Mathis Engelbart (TUM)
5. Cullen Jennings (Cisco)
6. Suhas Nandakumar(Cisco)
7. Ian Swett (Google)
8. Manish (Dyte)
9. Mike English (id3as)
10. Tim Evans (Cisco)

11. Mo Zanaty (Cisco)

Notes

Scribe: Sebastian Rust

Cullen Jennings: complain about aggressive bashing from Luke (should
this be in the notes?)
Martin Duke: General encouragement to give feedback to the chairs
specifically

Current draft

Ian Sweet: Open question about FETCH, reminder for close draft deadline

Suhas: couple of PRs clarifying FETCH in the pipeline
Ian Sweet: present current changelog for draft, issue: bit of handwaving
language concerning SUBSCRIBE
Martin Duke: postpone major changes for next draft
Ian Sweet: Current proposal for SUBSCRIBE header by Suhas, question:
unnecessary fields like priority per item, but only by subgroup is
possible
Cullen: ask for clarification about origin/order of priorities
Martin Duke: Priorities are all over the place right now, delay rework
of priorities for now
Suhas: open PR for priorities, add priority
Magnus: Shouldn't header be a mirror to SUBSCRIBE <- in general:
packaging issue
Martin: lets go back to a this issue when we redesign SUBSCRIBE
Ian Sweet: Enough information to write the draft, related comments
Suhas: Add cornercase for FETCH to fetch beginning of a group
Ian Sweet: Kill track per stream issue?
Martin: anyone else has comments on current changelog?
Ian Sweet: target for merge tomorrow (17.10)

Move to other issues

Martin Duke: Issue stream per track
Suhas: PR about gaps in the group, how to handle it

Motion: Kill track per stream PR (Ian)
Martin: Motion for the mailing list for consensus
Rough consensus after discussion: send out notifications for consensus
on mailing list for killing track per stream + adoption of FETCH, but
remove/add text for now. Can be added later if necessary

Clarification discussion about current draft

Cullen: Confusion about when gaps can occur + related comments
Mo Zanaty: General confusion about root causes for gaps or missing data,
or what both terms exactly mean

Closing stream per track

Martin Duke: (short presentation)
General Problem: it is hard to decide for a relay to decide when to end
a subgroup if explicit notification are used
Proposed rules for UPSTREAM and DOWNSTREAM fins (see slides attached to
agenda)
Cullen Jennings: more rules need for case when UPSTREAM closes
Martin Duke: possible use case for RESET_STREAM_AT QUIC extension
Mike English: Ending on group boundary, does it assume uniform group
sizes -> No
Rough feedback: goes into the right direction, but needs more detail and
time to think about it
Discussion about FETCH_CANCEL vs STOP_SENDING

Wrap up

Ian: wait one day, then merge FETCH PR
Ian: Last consensus: SUBSCRIBE_ANNOUNCEMENTS vs SUBSCRIBE_ANNOUNCES <-
slight preference for PRONOUNCES