DirSize for large directories (e.g. /docker, 8441 folders, 46832 files)
takes ~800ms to compute. While running, status returns intermediate
progress (finished=false). But on the very first poll the task can return
599 transiently (task just started, not yet available). Previously
_poll_task caught any SynologyError and returned immediately, making
dir_size always fail on the first 599.
Fix: treat 599 as a transient condition and continue polling. Give up
only after 5 consecutive 599 responses. All other error codes remain
immediately fatal.
Investigation confirmed with test_dirsize_md5.py:
- /test-mcp (2937 B): finished=true at 0ms
- /docker (3.9 GB, 46832 files): finished=false at 35ms, finished=true at 789ms
Tests: 2 new cases (retry-succeeds, 5x-599-gives-up) → 95 total
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
marcus
e3fa71b458