wai http origin: a refusal ends cleanly, and origin_per_peer_limit waits for its state #657
2026-11-05
wai http origin: a refusal ends cleanly, and origin_per_peer_limit waits for its state
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The origin answered 503 and closed with the request unread, so the connection ended in a reset after the answer. Clients on Linux and macOS still read the 503, but a client reading to the close then saw an error: 300 of 300 refused requests that wrote at once. With this change, none of 300 on either system. The 431 path already stopped sending and read on before closing; both now share that. origin_per_peer_limit failed under load because a third connection could overtake the idle two, so one of them was refused and the count never reached the limit, and because a fixed 200 ms and a 2 s read timeout could both run out. It now retries an attempt overtaken and waits for each state. It also requires 200 refusals to read their 503 with no read error and no retry. Co-Authored-By: Claude Opus 5.5 <[email protected]>