claude 94d3764c05 fix: stream HTTP 200 heartbeat before upload body to prevent proxy timeouts ...

Uploads from slow connections consistently fail with 502 after ~60-120s
because an upstream proxy (Traefik or cloud load-balancer) has a
"first response byte" deadline that fires before the request body arrives.

Fix: add startStreamingResponse middleware (after auth, before multer)
that immediately writes HTTP 200 + Transfer-Encoding: chunked + '\n'.
With proxy_request_buffering off in Nginx, this reaches the proxy at T≈0,
so no timeout triggers. The upload body continues streaming; multer writes
to disk; the actual JSON result arrives as the final chunk. Periodic
heartbeat '\n' writes every 30s keep response-idle timeouts at bay too.

Client-side: override Uppy's getResponseData/validateStatus to trim
leading whitespace before JSON.parse so the extra '\n' bytes are ignored.
Server-side: sendUploadResponse() helper handles both streaming mode
(res.headersSent → res.end(json)) and normal mode (res.status(N).json()).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-06-14 08:59:02 +00:00

..

clsi-nginx.conf

Enable gzip for HTML/CSS/JS output in clsi-nginx

2026-05-31 18:52:39 +00:00

nginx.conf.template

Fix Lumière theming + upload timeout via global middleware

2026-06-13 19:33:53 +00:00

overleaf.conf

fix: stream HTTP 200 heartbeat before upload body to prevent proxy timeouts

2026-06-14 08:59:02 +00:00