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fix(open-sse): emit [DONE] in passthrough SSE mode #142

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Merged
decolua merged 1 commit into from
Feb 18, 2026
Merged

fix(open-sse): emit [DONE] in passthrough SSE mode #142

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8 changes: 8 additions & 0 deletions open-sse/utils/stream.js
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Original file line number Diff line number Diff line change
Expand Up @@ -253,6 +253,14 @@ export function createSSEStream(options = {}) {
appendRequestLog({ model, provider, connectionId, tokens: null, status: "200 OK" }).catch(() => { });
}

// IMPORTANT: In passthrough mode we still must terminate the SSE stream.
// Some clients (e.g. OpenClaw) expect the OpenAI-style sentinel:
// data: [DONE]\n\n
// Without it they can hang until timeout and trigger failover.
const doneOutput = "data: [DONE]\n\n";
reqLogger?.appendConvertedChunk?.(doneOutput);
controller.enqueue(sharedEncoder.encode(doneOutput));

if (onStreamComplete) {
onStreamComplete({
content: accumulatedContent,
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