Stall Detection and Parallel Upload Resumability Fix #801
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This feature addresses the issue of uploads hanging indefinitely in unreliable network conditions, particularly in Node.js environments where no default timeout exists. When uploads stall due to network issues, TCP connections can enter a degraded state where no data is transferred but no error is triggered. This implementation detects such stalls and forces a retry. Implementation details: - Progress-based: Detects when no upload progress events are fired - Gracefully integrates with the existing retry mechanism - Fully configurable with sensible defaults: - 30s stall timeout (time with no progress before considering stalled) - 5s check interval (how often to check for stalls) This is especially important for uploads over satellite links, cellular networks, or other unreliable connections where TCP backoff can cause indefinite stalls.
Also refactors the test-stall-detection test suite.
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