- Add dedicated streamFailed signaling channel to abort registration waits early when stream dies
- Add per-connection regWait channel to route RegistrationResponse separately from shared incoming channel, avoiding race where other consumers steal the response
- Refactor handleOutgoing() loop to use select on streamExit/errCh, ensuring old handlers exit cleanly on reconnect (prevents stale senders competing with new stream)
- Buffer msgCh to reduce shutdown edge cases
- Add cleanup of streamFailed and regWait channels on reconnect/disconnect
- Fixes registration timeout and potential stream lifecycle hangs on aggressive server max_age recycling
Chris Lu
85369414f9