A folder upload with several large files could appear frozen for ~2 min: a few
concurrent uploads stalled and the old 120s per-file timeout neither aborted the
request (leaving zombie XHRs that exhaust the browser's per-host connection pool)
nor recovered quickly.
- uploadFileWithProgress now self-aborts on a stalled connection: the deadline
resets on every upload-progress tick (a slow but *moving* transfer is fine),
and once the body is sent the server gets a fixed window to respond; on a stall
xhr.abort() frees the connection immediately — no zombie, no cascade.
- Lower upload concurrency 4 -> 3 to reduce server contention from large
concurrent uploads.
- The outer per-file timeout is now just a generous backstop for a wedged delta
worker / by-hash request.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DioCrafts
b58b2d8f95