Necko Team – Weekly Status Meeting Notes

Date: 2026-04-21
Edition: April
Facilitator: Greg
Next on Triage: Kershaw Jang
Quality Report Coordinators (April): Kershaw Jang / Max Inden

Round Table

Networking Architecture (Content Process)

• Continued discussion:

  • Moving networking into content/child process

• Action:

  • Add input to shared doc before NSS/Necko meeting (Thu Apr 23)

• Still exploratory:

  • No commitment yet

  • Requires deeper architectural analysis

Roadmap Planning (Updates & Priorities)

Key prioritization decisions:

• Cookie DB encryption

  • Remains important (enterprise demand), but priority shifting discussion ongoing.

• HTTP connection manager refactor → P2

• Fetch streaming uploads → P2

• OMT background fetch work → P2

• WebTransport over HTTP/2

  • Deprioritized → moved to mid-term planning

• Tight mode

  • No perf gain → P3 (deferred)

SecPrivNecko Meetup (Toronto, May 4–8)

• Agenda planning:

  • May 5: Talks / cross-team sessions

  • May 6: Strategic planning (OMT, priorities)

  • May 7: Hack Day

• Open asks:

  • Volunteers for talks and collaboration sessions

• Proposal:

  • Potentially skip local hack day and use meetup instead.

WebCompat Issues (Akamai + Navigation)

• Clarification:

  • Akamai blocking issue → WebCompat (not Necko)

• Action:

  • Improve telemetry capture for Akamai blocks

• Navigation issue:

  • Proposal:

    • New error code for navigation-triggered aborts

  • Coordination needed with DOM team.

Team Check-ins (Highlights)

• Max

  • Happy Eyeballs + 0-RTT design work

  • MASQUE benchmarking setup (H2 vs H3)

  • Exploring Cloudflare benchmark suite

• Sunil

  • Speculation rules plan + no-vary search header

  • Working on:

    • LNA WPT expansion

    • Prefetch improvements

    • OMT prototype via pfetch

  • Planning XHR abort error code changes

• Valentin

  • Header serialization complete (H1/H2/H3)

  • Unblocked fetch streaming uploads

  • Coordinating cookie encryption dependencies

• Oskar

  • Observed HTTP/3 upload throughput improvements

  • Restarting slow start experiments

  • SEARCH implementation nearing review

• Max

  • Refactoring API code (0-RTT + transactions)

  • Addressing root causes of recent crashes

• Randell

  • Working on WebTransport + compression dictionaries

  • Wrapping up priority bug fixes

Important Business

Priority Queue

(Non-security bugs only)

Active Projects

FEISTY

• AMO / Remote Settings complete

• Downloads completed / in final stages

DoH Enablement

• Performance issues blocking rollout (Fenix & Focus)

• Continued monitoring

Local Network Access (LNA)

• Desktop rollout via Nimbus (Fx151)

• Android target Fx152

• Current focus:

  • Worker support

  • Prompt behavior improvements

QUIC / Slow Start

• Loss detection bug fixed

• Restarting experimentation

• SEARCH implementation nearing review

Happy Eyeballs

• Ongoing integration work

• Benchmarking vs H2/H3 in progress

MASQUE

• Phase 3 progressing

• Benchmarking setup underway

Speculation Rules API

• Project plan defined

• Work split across teams

• Prefetch improvements underway

Performance & Quality

• Focus:

  • HTTP/3 throughput validation

  • OMT bottleneck reduction experiments

  • API refactor stability improvements

• Ongoing:

  • Benchmarking (Cloudflare suite)

  • CI and telemetry improvements

WebCompat

Needs attention:

• https://bugzilla.mozilla.org/show_bug.cgi?id=1901934

• https://bugzilla.mozilla.org/show_bug.cgi?id=2027641

• https://bugzilla.mozilla.org/show_bug.cgi?id=2022833

• https://bugzilla.mozilla.org/show_bug.cgi?id=2024332

• https://bugzilla.mozilla.org/show_bug.cgi?id=2012345

Guidance:

• Investigate and file component bugs.

• Avoid direct reassignment.

• Remove PII before sharing logs.

Decisions & Alignment

• Strategic shifts:

  • Deprioritize WebTransport over H2

  • Emphasize OMT + performance experimentation

• Continue exploration of:

  • Networking architecture changes

Action Items

• Greg

  • Share telemetry graphs (compression dictionary)

  • Coordinate WebCompat Akamai issue classification

• Kershaw

  • Clean up old triage queue items (>3 months)

• Max

  • Build Cloudflare benchmarking suite

• Sunil

  • Prototype OMT improvements (pfetch)

  • Coordinate XHR abort behavior with DOM

  • Continue LNA + prefetch work

• Valentin

  • Coordinate cookie encryption dependencies

  • Submit fetch streaming uploads patch

• Randell

  • Review WebCompat queue items

  • Contribute to networking architecture doc

• All

  • Review priority queue and pick up bugs

  • Prepare for SecPrivNecko meetup contributions