[kixelated]

Problem

Our moq-transport publishers answered a peer's SUBSCRIBE_TRACKS with paused PUBLISHes, PUBLISH_SKIPPED, resumes through REQUEST_UPDATE, PREFIX_OVERLAP, and credit-gated opens. That is about 3,000 lines across Rust and JS for a request no known third party sends; our own peers list tracks over moq-lite. The quest (quest/m1/ietf-tracks-refuse.md) decided on 2026-10-28 to cut the inbound half and keep Rust's outbound discovery.

Approach

• Rust: Publisher::handle_stream still decodes SUBSCRIBE_TRACKS, so the refusal admits its Request ID. It then refuses on the request's own stream: DOES_NOT_EXIST for a reserved namespace, NOT_SUPPORTED otherwise. Deletes ietf/publisher/tracks.rs, the publisher's listings state, and the draft-18 DUPLICATE_SUBSCRIPTION check that only guarded tracks we had PUBLISHed. pause_join moves into publisher.rs.
• Codec: SubscribeTracks keeps only what our outbound request carries (forward, group_order, properties_wanted, token). Every other parameter is still read, so validation is unchanged, then dropped. Also removes NamespaceUpdate<const TRACKS>, whose true variant only decoded updates on an inbound listing, and the unused PREFIX_OVERLAP constant.
• JS: runSubscribeTracks returns to its refusal from before moq-dev/moq#6336. Deletes the answerer and its helpers (#listings, #trackClaims, the PUBLISH-only branches of #forward), PublishSkipped, the tracks-update and publish-ok parameter kinds, subscribe_tracks.test.ts, and the subscribe-tracks bench (also removed from js/justfile and sh/gh/nightly.sh).
• Outbound discovery is untouched. rs/moq-net/tests/integration/tracks_ietf.rs drove Rust's outbound listing against our own answerer, so it now checks one thing end to end: a Rust listing of our own peer fails on its own while its SUBSCRIBE keeps delivering. Its other cases are covered by ietf::subscriber::tracks unit tests against a scripted peer. The new overlapping_listings_share_one_request test covers the nested and broader listing coalescing, which previously had only end-to-end coverage.
• Docs: updated the SUBSCRIBE_TRACKS bullets in doc/concept/standard.md and the listing paragraph in doc/concept/stats.md.
• Deletes the finished quest and its link from quest/m1/README.md. The archive README's decision link now points here.
• Merged main, including moq-dev/moq#7190 (draft 20 back). The refusal tests cover drafts 18, 20, and 22.

Choices made without asking, for review:

• test/interop/tracks.ts is moq-lite's TRACKS stream, not IETF, so the quest's step to assert the refusal there doesn't apply. No interop case drove our IETF answerer.
• No compat cell exercises listings (test/interop/compat), so no planned break was added.
• rs/moq-net/benches/tracks.rs measures only the model's listing, not the IETF answerer, so it stays.
• The JS Publish codec keeps its properties/parameters fields, which round-trip a decoded PUBLISH.

Impact

• Wire: Rust and JS moq-transport publishers refuse SUBSCRIBE_TRACKS with NOT_SUPPORTED (reserved namespaces get DOES_NOT_EXIST), and the session stays up. A Rust TRACKS listing of one of our own moq-transport peers now fails instead of listing; Rust still sends SUBSCRIBE_TRACKS upstream to third parties.
• Public API: none.

Alternatives

Keeping inbound listing support was rejected in the quest's maintainer decision. So was cutting the outbound half, since the archive learns an IETF peer's tracks only through it.

Validation

• quest gate just check origin/main passes on head 83e5f24acd: Rust 9086 tests, JS, markdown, quest, shell, and the clippy/shape gates.
• Interop on the pre-merge head de6634606d: just test interop --versions ietf --publishers rust,js --subscribers rust,js,js-native-node,js-native-bun. Every cell passes on drafts 18 and 22 (relay sessions, CLI FETCH, late join, tails, datagrams, status, goaway, track status) except the browser js -> js cell on draft 22. That cell times out waiting for playback to resume after a pause. It fails the same way on main at 1d8bf24998, so it predates this PR (see Follow-ups). Interop was not rerun after the draft-20 merge.

Review

Codex review via quest review --deep (codex, gpt-6-astra, medium effort), session 01a1909b:

• Round 1 on de6634606d: no findings.
• Round 2 on 83e5f24acd (after merging main with hand-resolved conflicts): no findings.

The GPT-6.1 Sol checkpoint commit (060229d0dc, the JS refusal test) is covered by these rounds; its wrong error code (0x9) and ALPN pairing were fixed here.

Follow-ups

• The browser js -> js interop cell fails on draft 22 on main too: after a pause/resume the browser publisher ends the resumed subscriptions, and the relay forwards PUBLISH_DONE INTERNAL_ERROR. Worth a quest via /quest-plan.
• Optionally, port more of the old tracks_ietf.rs end-to-end outbound cases (track info, joining FETCH head, announces cap) to the scripted-peer harness in ietf::subscriber::tracks.

(Written by Claude Opus 5.5)

🤖 Generated with Claude Code

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Commits

Reviewing files that changed from the base of the PR and between 80e29de and 83e5f24.

Files selected for processing: 24

• doc/concept/standard.md
• doc/concept/stats.md
• js/justfile
• js/net/bench/subscribe-tracks.ts
• js/net/src/ietf/connection.test.ts
• js/net/src/ietf/parameters.ts
• js/net/src/ietf/peer-violations.test.ts
• js/net/src/ietf/publisher.ts
• js/net/src/ietf/subscribe_tracks.test.ts
• js/net/src/ietf/subscribe_tracks.ts
• js/net/src/integration.test.ts
• quest/m1/README.md
• quest/m1/archive/README.md
• quest/m1/ietf-tracks-refuse.md
• rs/moq-net/src/fuzz/request.rs
• rs/moq-net/src/ietf/error.rs
• rs/moq-net/src/ietf/publisher.rs
• rs/moq-net/src/ietf/publisher/tracks.rs
• rs/moq-net/src/ietf/request_stream.rs
• rs/moq-net/src/ietf/subscribe_tracks.rs
• rs/moq-net/src/ietf/subscriber/tracks.rs
• rs/moq-net/tests/integration/subscribe_tracks.rs
• rs/moq-net/tests/integration/tracks_ietf.rs
• sh/gh/nightly.sh

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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[kixelated]

Automated review by review (OpenAI)

Reviewed commit: 83e5f24

No actionable bugs found in the changed code. The direction is coherent: refuse inbound SUBSCRIBE_TRACKS on its own stream, retain decoding/validation and reserved-namespace handling, and preserve Rust's outbound discovery. Removing the answerer and PUBLISH-only forwarding branches is simpler than maintaining an unused inbound implementation. The new refusal/session-survival coverage and overlapping outbound-listing test match that boundary.

Verification limits: static review of the changed Rust/JavaScript paths, related request-stream handling, tests, and documentation; I did not run tests or interop. Successful outbound discovery now relies more heavily on scripted-peer coverage after removal of the self-peer integration cases.

[kixelated]

Landing via /quest-merge.

• Changes: Rust and JS moq-transport publishers refuse inbound SUBSCRIBE_TRACKS with NOT_SUPPORTED (DOES_NOT_EXIST for reserved namespaces) on the request's own stream; Rust's outbound discovery is kept. Finished quest quest/m1/ietf-tracks-refuse.md deleted.
• Reviews on head 83e5f24acdf0ae71de407950c708d7f5e48aca63: local Codex quest review --deep rounds 1 and 2, 0 findings; the online OpenAI review on this head reported no actionable bugs. No unresolved threads.
• Checks: quest gate just check origin/main passed on this head; quest check --base origin/main passes (686 documents ok).
• Decisions: none new at merge time. The choices made without asking are listed in the PR body.
• Known: the browser js -> js draft-22 pause/resume interop cell fails the same way on main, so this PR does not cause it. It is listed as a follow-up.

(Written by Claude Opus 5.5)

[pullfrog]

✅ No new issues found.

Reviewed changes

• Rust publisher refuses inbound SUBSCRIBE_TRACKS (rs/moq-net/src/ietf/publisher.rs): still decodes the message, then rejects on its own stream — DOES_NOT_EXIST for a reserved prefix, NOT_SUPPORTED otherwise. Deletes ietf/publisher/tracks.rs (2,565 lines), the publisher's listings state, and the draft-18 DUPLICATE_SUBSCRIPTION guard; pause_join moves into publisher.rs.
• Codec narrows (ietf/subscribe_tracks.rs, ietf/request_stream.rs, ietf/error.rs): SubscribeTracks keeps only what outbound carries; the unread fields are still decoded for validation then dropped and no longer encoded. NamespaceUpdate loses its TRACKS const generic; PREFIX_OVERLAP is removed.
• JS returns to a refusal (js/net/src/ietf/publisher.ts): runSubscribeTracks refuses (refuseReserved, else not_supported); the answerer, PublishSkipped, #listings, #trackClaims, the tracks-update/publish-ok parameter kinds, and the subscribe-tracks bench are deleted.
• Tests/docs/quests: refusal-per-request across drafts 18/20/22, a_listing_of_our_own_peer_fails_alone, new overlapping_listings_share_one_request; doc/concept/standard.md and stats.md updated; the finished quest is deleted and its links repointed.

I verified the removal leaves no dangling references (PublishSkipped, PREFIX_OVERLAP, tracks-update, publish-ok, the removed SubscribeTracks fields, NamespaceUpdate::<TRACKS>), that pause_join is still called at rs/moq-net/src/ietf/publisher.rs:1477, that no ietf::Publish sender remains (so the docs' "We never send PUBLISH" holds), and that the JS bench list and sh/gh/nightly.test.py stay consistent. mod ietf is private (rs/moq-net/src/lib.rs:112) and the JS symbols are absent from js/net/src/ietf/index.ts, so the "no public API" claim checks out and no MIGRATE entry is needed.

Noted, not blocking: end-to-end coverage of Rust's outbound listing (track info, joining FETCH head, announces cap) drops to scripted-peer unit tests, which the author records as a follow-up to port.

  ^{｜ View workflow run ｜ Using deepseek-v4.1-flash (free via Pullfrog for OSS) ｜ 𝕏}

[moq-bot]

quest land removed this pull request from the queue: the batch check failed (exit 1).

    Checking ashpd v0.13.13
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    Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.34s

info: running `cargo clippy --locked --tests --all-features -- -D warnings` on moq-wasm (51/52)
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info: running `cargo clippy --locked --tests --all-features -- -D warnings` on uniffi-bindgen (52/52)
   Compiling getrandom v0.4.3
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   Compiling askama_macros v0.16.1
    Checking uniffi_core v0.32.2 (https://github.com/kixelated/uniffi-rs?rev=88d835d#88d835d6)
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   Compiling uniffi_macros v0.32.2 (https://github.com/kixelated/uniffi-rs?rev=88d835d#88d835d6)
    Checking uniffi v0.32.2 (https://github.com/kixelated/uniffi-rs?rev=88d835d#88d835d6)
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    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.52s
mbx[cache]: object cache: 1246 hits, 114 misses, 50 not looked up; 0 B downloaded, 0 B uploaded, 398.8 MiB stored locally
mbx[cache]: 8m 10s session; 21m 20s estimated compiler time avoided (summed across compilations)
mbx[cache]: 50 compilations had no usable prior inputs or matching prediction for a lookup
mbx[cache]: Cargo artifact reuse and CI cache archive transfers are not included above
mbx[savings]: 2.4 TiB in every checkout, 2.4 TiB on disk. arithmetic declined to comment.
ci: check flake failed
ci: seconds per module
   617  check rs
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  2026  wall time
error: recipe `ci` failed on line 106 with exit code 1

.

[moq-bot]

Codex land fixer: fixer crashed (exit 101); run /quest-iterate. Recommendation: run /quest-iterate before picking it again.

moq-doc:check                  | .vitepress/api/index.test.ts:
moq-doc:check                  | (pass) a rendered workspace > each entrypoint gets a page named by its import specifier [4.97ms]
moq-doc:check                  | (pass) a rendered workspace > a re-export from another workspace package links to its owner [2.95ms]
moq-doc:check                  | (pass) a rendered workspace > an external re-export is documented under each public name [9.88ms]
moq-doc:check                  | (pass) a rendered workspace > a namespace export keeps its public name [2.69ms]
moq-doc:check                  | (pass) a rendered workspace > a hidden declaration is documented under the alias that re-exports it [1.25ms]
moq-doc:check                  | �[93m[warning]�[0m Value, defined in @test/hidden/src/access.ts, is referenced by read but not included in the documentation
moq-doc:check                  | �[93m[warning]�[0m Value, defined in @test/hidden/src/access.ts, is referenced by read but not included in the documentation
moq-doc:check                  | (pass) an unexported declaration that a public one names fails the run [279.41ms]
moq-doc:check                  | �[93m[warning]�[0m Failed to resolve link to "Missing" in comment for value
moq-doc:check                  | (pass) a link that does not resolve fails the run [474.38ms]
moq-doc:check                  | 
moq-doc:check                  | concept/audio-jitter/corpus.test.ts:
moq-doc:check                  | (pass) audio jitter corpus > paced > matches the checked-in file [0.11ms]
moq-doc:check                  | (pass) audio jitter corpus > paced > is a trace of equal-length clocks [0.03ms]
moq-doc:check                  | (pass) audio jitter corpus > paced > arrives in a monotonic order [0.58ms]
moq-doc:check                  | (pass) audio jitter corpus > paced > names a target for the first frame [0.02ms]
moq-doc:check                  | (pass) audio jitter corpus > paced > reports every target as a change [0.06ms]
moq-doc:check                  | (pass) audio jitter corpus > flush > matches the checked-in file [0.03ms]
moq-doc:check                  | (pass) audio jitter corpus > flush > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > flush > arrives in a monotonic order [0.15ms]
moq-doc:check                  | (pass) audio jitter corpus > flush > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > flush > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > advertised > matches the checked-in file [0.03ms]
moq-doc:check                  | (pass) audio jitter corpus > advertised > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > advertised > arrives in a monotonic order [0.17ms]
moq-doc:check                  | (pass) audio jitter corpus > advertised > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > advertised > reports every target as a change [0.01ms]
moq-doc:check                  | (pass) audio jitter corpus > buildup > matches the checked-in file [0.04ms]
moq-doc:check                  | (pass) audio jitter corpus > buildup > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > buildup > arrives in a monotonic order [0.23ms]
moq-doc:check                  | (pass) audio jitter corpus > buildup > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > buildup > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > reorder > matches the checked-in file [0.03ms]
moq-doc:check                  | (pass) audio jitter corpus > reorder > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > reorder > arrives in a monotonic order [0.14ms]
moq-doc:check                  | (pass) audio jitter corpus > reorder > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > reorder > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > backlog > matches the checked-in file [0.04ms]
moq-doc:check                  | (pass) audio jitter corpus > backlog > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > backlog > arrives in a monotonic order [0.26ms]
moq-doc:check                  | (pass) audio jitter corpus > backlog > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > backlog > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > idle > matches the checked-in file [0.03ms]
moq-doc:check                  | (pass) audio jitter corpus > idle > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > idle > arrives in a monotonic order [0.13ms]
moq-doc:check                  | (pass) audio jitter corpus > idle > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > idle > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > tunein > matches the checked-in file [0.04ms]
moq-doc:check                  | (pass) audio jitter corpus > tunein > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > tunein > arrives in a monotonic order [0.19ms]
moq-doc:check                  | (pass) audio jitter corpus > tunein > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > tunein > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > spike > matches the checked-in file [0.05ms]
moq-doc:check                  | (pass) audio jitter corpus > spike > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > spike > arrives in a monotonic order [0.26ms]
moq-doc:check                  | (pass) audio jitter corpus > spike > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > spike > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > straggler > matches the checked-in file [0.03ms]
moq-doc:check                  | (pass) audio jitter corpus > straggler > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > straggler > arrives in a monotonic order [0.23ms]
moq-doc:check                  | (pass) audio jitter corpus > straggler > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > straggler > reports every target as a change
moq-doc:check                  | (pass) audio jitter corpus > fixed > matches the checked-in file [0.02ms]
moq-doc:check                  | (pass) audio jitter corpus > fixed > is a trace of equal-length clocks
moq-doc:check                  | (pass) audio jitter corpus > fixed > arrives in a monotonic order [0.10ms]
moq-doc:check                  | (pass) audio jitter corpus > fixed > names a target for the first frame
moq-doc:check                  | (pass) audio jitter corpus > fixed > reports every target as a change
moq-doc:check                  | 
moq-doc:check                  |  134 pass
moq-doc:check                  |  0 fail
moq-doc:check                  |  15964 expect() calls
moq-doc:check                  | Ran 134 tests across 3 files. [7.35s]
moq-doc:check                  | API reference: 17 packages in 46.5s
moq-doc:check                  | 
moq-doc:check                  |   �[32m�[1mvitepress�[22m v1.6.4�[39m
moq-doc:check                  | 
moq-doc:check                  | - building client + server bundles...
moq-doc:check                  | �[34mllmstxt�[39m�[2m » �[22m  �[1mvitepress-plugin-llms�[22m initialized �[2m(client build)�[22m with workDir: �[36m/work/doc�[39m
moq-doc:check                  | �[34mllmstxt�[39m�[2m » �[22m  Build started, file collection cleared
moq-doc:check                  | �[34mllmstxt�[39m�[2m » �[22m  Processing �[1m124�[22m markdown files from �[36m/work/doc�[39m
moq-doc:check                  | �[34mllmstxt�[39m�[2m » �[22m  Generating �[36mllms.txt�[39m...
moq-doc:check                  | �[34mllmstxt�[39m�[2m » �[22m  Generating full documentation bundle (�[36mllms-full.txt�[39m)...
moq-doc:check    
thread 'codex-main' (86) panicked at /rustc/48a229ceaefd4985c50990b14116b6d856af0985/library/std/src/io/stdio.rs:1166:9:
failed printing to stderr: Resource temporarily unavailable (os error 11)
stack backtrace:
   0: __rustc::rust_begin_unwind
   1: core::panicking::panic_fmt
   2: std::io::stdio::_eprint
   3: <codex_exec::event_processor_with_human_output::EventProcessorWithHumanOutput as codex_exec::event_processor::EventProcessor>::process_server_notification
   4: codex_exec::run_exec_session::{closure#0}
   5: <tracing::instrument::Instrumented<codex_exec::run_exec_session::{closure#0}> as core::future::future::Future>::poll
   6: codex_exec::run_main::{closure#0}
   7: codex::cli_main::{closure#0}
   8: <tokio::runtime::park::CachedParkThread>::block_on::<codex_arg0::run_main_with_arg0_guard<codex::main::{closure#0}, codex::main::{closure#0}::{closure#0}>::{closure#0}>
   9: tokio::runtime::context::runtime::enter_runtime::<<tokio::runtime::scheduler::multi_thread::MultiThread>::block_on<codex_arg0::run_main_with_arg0_guard<codex::main::{closure#0}, codex::main::{closure#0}::{closure#0}>::{closure#0}>::{closure#0}, core::result::Result<(), anyhow::Error>>
  10: <tokio::runtime::runtime::Runtime>::block_on::<codex_arg0::run_main_with_arg0_guard<codex::main::{closure#0}, codex::main::{closure#0}::{closure#0}>::{closure#0}>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
quest: fixer agent exited 101

(written by Codex)