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📝 Summary
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| Check name | Status | Explanation |
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The title clearly and concisely identifies the main change: preventing netlify dev from crashing when proxy errors occur after response headers are sent. |
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The description directly explains the proxy error, affected scenarios, implemented fix, and integration test coverage. |
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @tests/integration/commands/dev/dev.test.ts:
- Around line 431-465: Wrap the withDevServer call in the test with try/finally
and move frameworkServer.close() into the finally block so it runs even if an
assertion or the callback fails.
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📒 Files selected for processing: 2
src/utils/proxy.tstests/integration/commands/dev/dev.test.ts
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| const response = await fetch(server.url) | ||
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| t.expect(response.status).toBe(200) | ||
| await t.expect(response.text()).rejects.toThrow() |
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Can we assert something specific about this error? It's a common pattern for assertions like this to be "accidentally" passing for the wrong reason.
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Good call. Both now assert rejects.toThrow('Premature close'), the error for a body that ends before the final chunk. The test also checks for the proxy's Could not finish proxying / warning, which only the new code path logs. Fixed in 9427986.
| const nextResponse = await fetch(server.url) | ||
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| t.expect(nextResponse.status).toBe(200) | ||
| await t.expect(nextResponse.text()).rejects.toThrow() |
2 participants
Summary
The http-proxy error handler always called
res.writeHead(500). When the upstream failed after the response head had already gone to the client, that threwERR_HTTP_HEADERS_SENTinside an event listener andnetlify devexited. Two ways to hit it:ECONNRESETafter the 405 is out. Ten 5.9 MB POSTs crashed the dev server.Once headers are sent, the handler now logs a warning and destroys the response if it is still open; the client sees a truncated response, which is how the
serverHandlercatch inonRequestalready handles this. If the response has already finished (the static-site 405 case), it is left alone without a warning, since the client already has its full response.The new integration test uses a framework server that sends a chunked head and one chunk, then resets the socket. It fails 5 of 5 runs on main and passes 5 of 5 with the fix.
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passes our tests.