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Jamie WongandClaude Opus 4.7
5e5c2062bf
When /v1/responses streaming hits the user/account concurrency wait, the wait loop sends SSE ping comments to keep the connection alive, which flushes HTTP 200 + headers. If the wait then times out (or any other post-flush error fires), handleStreamingAwareError previously emitted a generic `event: error` frame. Codex CLI requires the stream to end with a Responses terminal event (response.completed/failed/incomplete/cancelled), so it reports "stream closed before response.completed" and the user-facing rate-limit intent is lost. This change detects inbound = /v1/responses in both handleStreamingAwareError implementations and emits a protocol-compliant response.failed event whose field set mirrors apicompat.makeResponsesCompletedEvent (id/object/model/status/output/error). The synthetic id reuses ctxkey.RequestID so client errors can be grepped against server logs. sequence_number is intentionally omitted to preserve monotonicity on streams that already emitted real events. Other inbound endpoints (/v1/chat/completions, /v1/messages) keep their legacy formats untouched. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>