Meeting 2024-09-17

• Team calendar

  • Next on Necko triage: Sunil

• New contributors / Friends of Necko THANK YOU!!

  • Kagami Rosylight [:saschanaz] (they/them)

    • Bug: 1907428 crash near null in [@ mozilla::dom::FetchChild::RecvOnResponseAvailableInternal]

  • Tannal2409

    • Bug: 1917924 Remove network.http.reject_NULs_in_response_header_values pref 

• Round Table

  • [greg] Manuel has raised this discussion regarding enabling DNS over SOCKS4 by default? 

    • SOCKSv4 does not support DNS SOCKSv4a does however we have no ability to determine version 

• Active Projects roadmap Fx131 rel Oct 01, Fx132 freeze Sep 26

  • 3rd Party Cookie Deprecation (in progress, target Fx134)

    • 3PCD shipped to nightly

    • Tracking breakage: https://bugzilla.mozilla.org/show_bug.cgi?id=1917788 

    • 3PCD timeline

      • 131: Enable in nightly all windows(dry run)

        • Check back once 131 hits release and see the telemetry

      • 132: Enable in PBMode and ETP Strict to release (we are here)

      • 133: Release telemetry on partition limit will start, review it

      • 134: All windows in release (targeting January)

      • 136: “Migration”/deletion of TCP cookies (non-chips partitioned)

  • Fetch keepalive: (in progress, Target Fx132 (check again on Friday if we still can make it to Fx132) 

    • Final Milestone

    • 2/4 patches r+d

    • [Sunil] Discussed pending issues  for worker keepalive with Eden Chuang

      • Incorporating the changes and testing

  • HTTP Priorities Experiments (in progress, target Fx 132)

    • [acreskey]

      • fetchpriority=high on images working very well, see 1797715 - [meta] Fetch Priority (was Priority Hints), propose we let ride the feature ride the trains

      • Working on documentation, feedback if you have any

        • WIP documentation:

          • https://github.com/acreskeyMoz/acreskeyMoz.github.io/blob/main/docs/prioritization.md

          • Bug 1915852 - Document network request scheduling and prioritization system

      • Possible bug:

        • Bug 1919158 -  Request urgency may ignore fetchPriority and supportsPriority in two scenarios

• Firefox/Chrome benchmark test suite (in progress, Fx132)

  • [kershaw]

    • Optimize server setup

      • H3 download: 838.66mbps -> 914.76mbps

      • Need ~8Gbps to verify improvement w UDP 

    • Working on TC scripts

• Interop 2024 URL (in progress, target H2 2024)

  • [Ed] Addressing review comments for defaultURI

    • Including getting data model created for remote settings server side

• necko-glean: (sekim) Landing glean patches using #ifndef ANDROID blocks tracking such blocks using Bug 1901798  

  • – enter updates –

• Fast UDP I/O in Firefox (in progress, target H2 2024)

  • milestone 1 - basic end-to-end integration

    • Report of network.http.http3.use_nspr_for_io false breaking HTTP3/QUIC on Windows on ARM

      • Still only reproducible on one Windows on ARM machine.

      • Debugging in progress.

  • milestone 2 - ECN

    • Landed in Firefox Nightly.

    • See implementation in Github#1678, Bugzilla#1902065.

    • See various metric sources in Glean Dictionary, Glam and Looker.

  • milestone 3 - Benchmarks and metrics

    • Adding UDP datagram (segment) size metrics (phabricator#D216034) landed. Should be available in Firefox Nightly soon.

    • Migrating Http3Session::CloseConnectionTelemetry to Glean.

      • Work in progress phabricator#D221615.

  • milestone 5 - multi-packet state machines

    • Don't allocate in UDP send & receive path (github#2093).

      • Ready for review.

      • "Early benchmarks are promising, showing e.g. a 10% improvement in the Download benchmark, and up to 40% improvement in the neqo-neqo-reno-pacing benchmark."

• Performance work: 

  • [acreskey] 

    • Paused the work on evaluating/tuning the ClassOfService tailing system until we ship HTTP Priorities

      • https://bugzilla.mozilla.org/show_bug.cgi?id=1915866

    • FYI: another profiler bug

      • Bug 1919148 -  [network-markers] Expose class of service for each request in the profiler network tab