Meeting 2025-03-25

• Team calendar

  • Next on Necko triage: Randell

• New contributors / Friends of Necko – Thank you!

  • INSERT LIST

• Round Table

  • (valentin) Discuss TCP timeout - https://bugzilla.mozilla.org/show_bug.cgi?id=1951636 

    • Filed another bug 1956243 - Review necko connection timeout limits 

• Active Projects roadmap Fx137 rel Apr 01, Fx138 code freeze Mar 27

  • Firefox Essential Internal Services Toughening[FEISTY] (in progress, TBD)

    • – enter updates –

  • DoH Enablement - Fenix and Focus (in progress, H2-2025)

    • (sekim) Landing DoH enablement as a secret setting in Beta & Release.

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

    • Will ship with CHIPS, pending target

    • – enter updates –

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

    • [kershaw]

      • Found a server side issue.

      • QLOG and Wireshark trace provided.

      • Suggest to disable 0RTT in the test framework.

  • 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 Fx137)

    • Experiment enrollment on beta.

    • Monitoring  metrics via http3 dashboard.

  • Http3 upload speed

    • Benchmarking PR_POLL_WRITE patch.

    • Promising on Windows with 15% performance improvement.

  • QUIC stream receive window auto-tuning

    • Not yet started.

  • QUIC Acknowledgement Frequency draft 10

    • Not yet started.

  • Implement WebTransport based on HTTP/2 ()

    • (sekim) Implementing SETTINGS_WEBTRANSPORT_MAX_SESSIONS, currently in review (may need some modifications)

    • [kershaw]

      • Bug 1874102 Implement Http2WebTransportStream

        • r?

      • Implementing flow control for stream creation 

  • Interop 2025 - URL Pattern (internal review, Fx141)

    • Still working on glue wrapper

  • Support Compression Dictionary Transport (in progress, TBD)

    • Decompressing using dictionaries loaded from the disk cache

    • Next step is saving dictionary data to the cache, and loading it back on startup

    • Oskar is going to help writing tests

  • Improve Fenix Performance in Slow and Transitional Networks (in progress)

    • Applink Startup on slower networks

      • ~1 second delays before target url

        • https://share.firefox.dev/422Duf1

      • Bug 1956081 - Network Connectivity Service's initial checks appear to block applink document load, introducing additional latency on slower networks

      • URLClassifier

  • Firefox Access Neutralization (FAN) (planning, TBD)

    • [sunil] Re-scoped project Proposal

    • Needs sec review

      • [Sunil] DAN reviewing the proposal

    • [sunil] preparing patches for review

  • NEL

    • – enter updates –

  • DNS Cache Expiry:

    • – enter updates –

    • Follow up experiment for increasing the grace period is planned after bug was fixed

      • Experiment Brief - DNS caching experiment followup (grace period)

      • https://experimenter.services.mozilla.com/nimbus/dns-caching-exp-grace-period/summary

    • – enter updates –

  • Performance work: 

    • TRR performance issues, AppLink Startup on slower networks