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OPTI-4942: Sideloaded subtitles - Restart local server after returning from background - #130
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Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Swifter defaults to background QoS, which starved the local server's request handling and its nested subtitle fetch for tens of seconds on a loaded system (seen as timeouts on CI). Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
therama
approved these changes
Oct 29, 2026
The foreground reachability check now runs asynchronously and restarts the server on the main thread when it fails. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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Summary
Restarts the connector's local subtitle server when the app returns to the foreground if the server is no longer reachable. Also stops old servers from being left running.
Problem
vttTimestamp, and tracks with automatic timestamp sync are served by a local server. iOS can close that server's socket while the app is in the background. The connector didn't handle this, so subtitles failed to load after returning to the app.Solution
Tests done