audiosocket: fix timeout, fix dialplan app exit, server address in logs

audiosocket: fix timeout, fix dialplan app exit, server address in logs

- Correct wait timeout logic in the dialplan application.
- Include server address in log messages for better traceability.
- Allow dialplan app to exit gracefully on hangup messages and socket closure.
- Optimize I/O by reducing redundant read()/write() operations.

Co-authored-by: Florent CHAUVEAU <florentch@pm.me>
(cherry picked from commit a6ef41e4caabb0b8698ff2834df7911f4e801f88)