dispose method
void
dispose()
Implementation
void dispose() {
try {
channel.sink.close();
} catch (_) {}
try {
audioWavController.dispose();
} catch (e) {}
try {
streamTimer.cancel();
} catch (e) {}
try {
_peerConnection?.close();
} catch (e) {}
try {
_localStream!.getAudioTracks()[0].stop();
} catch (_) {}
}