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quest(m1): plan MoQT own-range codes and relay drain from web accept - #5374
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Reviewed commit: 93655b8
No actionable bugs found in this documentation-only change. The direction is sound: centralizing the own-range fallback in SessionError::to_code covers shared IETF close paths without duplicating guards, and carrying the accept-time activity guard into the WebSocket handler addresses the pre-handler drain gap while explicitly bounding plain HTTP and later keep-alive upgrades.
Verification: inspected all three changed files and the surrounding error mapping, listener, WebSocket, and shutdown code. No builds or tests were run; the proposed fixes and regression tests are not implemented by this PR. Rechecked open/non-draft state, head, and existing reviews immediately before submission.
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| Decided 2026-10-12: map it in the shared `SessionError::to_code`, so every | ||
| IETF close site is covered, and delete Lite's now-redundant arm in | ||
| `lite/error.rs`. Rust only: JS was checked and can't emit these codes |
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If this plan is implemented, changing the protocol-independent SessionError::to_code() will also rewrite received Lite errors outside the MoQT send path. For example, MoqProtocolError::from_session in rs/moq-ffi/src/error.rs and from_session in rs/moq-c/src/error.rs use this method for their documented verbatim code, so a Lite peer's unknown own-range code such as 0x31 would be exposed to every binding as 0x1. Put this filtering in the IETF session-code encoder and route the direct IETF close sites through it, or account for the wider public API and binding change rather than describing it as MoQT-only.
AGENTS.md reference: AGENTS.md:L57-L60
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Agreed, fixed in ae26ba3. The quest now filters own-range codes in the IETF session-code encoder (mirroring lite::error::to_session_code), routes Version::session_code and the direct IETF close sites through it, and leaves SessionError::to_code untouched so moq-ffi and moq-c keep exposing received codes verbatim. The recorded decision states this reason, and the test list checks to_code() is unchanged.
(Written by Claude Opus 5.5)
WalkthroughAdds two quest documents and links them from the quest index. One document describes a proposed mapping for MoQT session-close codes. The other describes proposed relay drain accounting for public web connections. These are plans; the changes do not implement either behavior. Priority: ⬇️ Low Merge Risk: 🔵 Low · up to The PR adds plans rather than runtime changes, but their statements should accurately describe the close-code change and the h2 drain exception before the plans guide implementation. Pre-merge checks ·
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| Check name | Status | Explanation |
|---|---|---|
| Docstring Coverage |  |
No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0… |
| Linked Issues check | |
Check skipped because no linked issues were found for this pull request. |
| Out of Scope Changes check | |
Check skipped because no linked issues were found for this pull request. |
| Title check | |
The title clearly and concisely identifies both planned changes: MoQT own-range codes and relay drain handling from web accept. |
| Description check | |
The description directly explains the two quests, their scope, design decisions, and stated impact. It is related to the changeset. |
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Actionable comments posted: 2
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Inline comments:
Review comments at @quest/m1/drain-web-accept.md:
- Line 20: Update the drain guarantee and related public-listener and test
descriptions to explicitly limit the behavior to HTTP/1.1, including qualifying
the plain GET case as an HTTP/1.1 GET. Preserve the intentional h2 behavior and
avoid implying that h2 connections hold the drain guard until request headers
arrive.
Review comments at @quest/m1/own-range-bridge.md:
- Line 29: Update the “MoQT. Wire” statement to distinguish unchanged wire
encoding and negotiated versions from the changed close-code value: an IETF
close carrying Unknown(0x30..=0x3f) must use 0x1.
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📒 Files selected for processing (3)
quest/m1/README.mdquest/m1/drain-web-accept.mdquest/m1/own-range-bridge.md
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… HTTP/1.1 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Merge summary for ae26ba3:
(Written by Claude Opus 5.5) |
Problem
Two follow-ups from this run need durable scope: MoQT closes can carry moq-lite own-range session codes (0x30-0x3f), and a relay drain can exit under a WebSocket client still in TLS or header parsing (the Codex follow-up on #5286).
Approach
Plans two m1 quests with the maintainer's decisions recorded:
quest/m1/own-range-bridge.md[XS]: a MoQT close never carries an own-range code. Filter it in the IETF session-code encoder and route every IETF close site through it, Rust only.quest/m1/drain-web-accept.md[S]: on HTTP/1.1, a relay drain counts web connections from TCP accept, releasing at the first non-upgrade request's headers. h2 releases at ALPN.The
--all-featuresdmabuf break needs no quest: #5340 fixes it.Decisions
Review round (picked by the maintainer):
SessionError::to_codeto_codeverbatim, so the shared fix would rewrite received Lite codes for every binding)Impact
Unknown(0x30..=0x3f)to 0x1.Alternatives
Filtering in the shared
SessionError::to_codecovers every close site in one place, but changes the code every binding reports for received Lite errors.Follow-ups
None beyond the two quests.
(Written by Claude Opus 5.5)
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