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fix: remove bufio.Scanner 2MiB line limit for SSE; support quasi_status direct patch

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Replace bufio.Scanner with bufio.NewReaderSize + ReadBytes('\n') across all
SSE read paths to preserve long single-line data (e.g. write_file content).
Add quasi_status and auto_continue handling as direct path-based patches in
both Go continue observer and Node vercel_stream_impl, mirroring existing
batch-patch logic. Add 2MiB+ line throughput tests at every SSE layer.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
CJACK
2026-05-01 15:45:17 +08:00
parent fd0ec29991
commit 0a6ef8e3f2
11 changed files with 301 additions and 76 deletions
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22
tests/node/chat-stream.test.js
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@@ -258,6 +258,28 @@ test('vercel stream exhausts DeepSeek continue before synthetic retry', async ()
assert.equal(fetchBodies.some((body) => String(body.prompt || '').includes('Previous reply had no visible output')), false);
});
test('vercel stream continues direct quasi_status incomplete before final tool call', async () => {
const { frames, fetchURLs } = await runMockVercelStreamSequence([
[
'data: {"response_message_id":7,"p":"response/content","v":"<tool_calls><invoke name=\\"write_file\\"><parameter name=\\"content\\"><![CDATA[part-one"}\n\n',
'data: {"p":"response/quasi_status","v":"INCOMPLETE"}\n\n',
'data: [DONE]\n\n',
],
[
'data: {"response_message_id":8,"p":"response/content","v":"-part-two]]></parameter></invoke></tool_calls>"}\n\n',
'data: {"p":"response/status","v":"FINISHED"}\n\n',
'data: [DONE]\n\n',
],
], { tool_names: ['write_file'] });
const parsed = frames.filter((frame) => frame !== '[DONE]').map((frame) => JSON.parse(frame));
const toolDelta = parsed.find((item) => item.choices?.[0]?.delta?.tool_calls);
assert.equal(fetchURLs.filter((url) => url === 'https://chat.deepseek.com/api/v0/chat/continue').length, 1);
assert.ok(toolDelta);
const args = JSON.parse(toolDelta.choices[0].delta.tool_calls[0].function.arguments);
assert.equal(args.content, 'part-one-part-two');
assert.equal(parsed.at(-1).choices[0].finish_reason, 'tool_calls');
});
test('vercel stream usage completion_tokens does not double-count visible output', async () => {