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ksmithandClaude Sonnet 5
6f67f36578
Messages could silently stop arriving until a room switch happened to paper over it with a REST refetch. Root cause: a connection that dies without a clean close (laptop sleep, an idle connection recycled by a proxy/NAT) looks identical to a healthy-but-quiet one -- readyState stays OPEN, onclose never fires, so the already-correct reconnect and rejoin logic never runs. The backend now pings every 30s and the frontend force-closes the socket if nothing (any frame, not just a pong) arrives within 65s, routing straight through the existing reconnect/rejoin path instead of needing separate recovery logic. Also found and fixed a more severe adjacent bug while tracing this: ConnectionManager.broadcast()/send_to_user() had no per-socket error handling, so one dead or racing socket could raise inside the app's single, never-restarted Redis pubsub listener task and silently kill live delivery for every room and every user on that process until restart. Now caught and logged per-socket instead of propagating. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>