ua: add event UA_EVENT_SHUTDOWN

- this event is sent when the uag is shutting down
- modules can subscribe to this event to check when the
  shutdown sequence has started
- presence,mwi: add usage of SHUTDOWN event and add 500ms delay

fixes #30

https://github.com/alfredh/baresip/issues/30

1 files changed, 1 insertions, 0 deletions

diff --git a/include/baresip.h b/include/baresip.h
index 74cef89..76da052 100644
--- a/include/baresip.h
+++ b/include/baresip.h
@@ -489,6 +489,7 @@ enum ua_event {
 	UA_EVENT_CALL_TRANSFER_FAILED,
 	UA_EVENT_CALL_DTMF_START,
 	UA_EVENT_CALL_DTMF_END,
+	UA_EVENT_SHUTDOWN,
 
 	UA_EVENT_MAX,
 };