add hangup listener so we can close websocket

src/audio_call_manager.py

@@ -15,6 +15,7 @@ class AudioCall:
         self.link.set_link_closed_callback(self.on_link_closed)
         self.link.set_packet_callback(self.on_packet)
         self.audio_packet_listeners = []
+        self.hangup_listeners = []
 
     def register_audio_packet_listener(self, callback):
         self.audio_packet_listeners.append(callback)
@@ -22,10 +23,17 @@ class AudioCall:
     def unregister_audio_packet_listener(self, callback):
         self.audio_packet_listeners.remove(callback)
 
+    def register_hangup_listener(self, callback):
+        self.hangup_listeners.append(callback)
+
     # handle link being closed
     def on_link_closed(self, link):
         print("[AudioCall] on_link_closed")
 
+        # call all hangup listeners
+        for hangup_listener in self.hangup_listeners:
+            hangup_listener()
+
     # handle packet received over link
     def on_packet(self, message, packet):
 

web.py

@@ -316,8 +316,18 @@ class ReticulumWebChat:
                         # ignore errors sending audio packets to websocket
                         pass
 
+            # close websocket when call is hungup
+            def on_hangup():
+                if websocket_response.closed is False:
+                    try:
+                        asyncio.run(websocket_response.close(code=WSCloseCode.GOING_AWAY))
+                    except:
+                        # ignore errors closing websocket
+                        pass
+
             # register audio packet listener
             audio_call.register_audio_packet_listener(on_audio_packet)
+            audio_call.register_hangup_listener(on_hangup)
 
             # prepare websocket response
             websocket_response = web.WebSocketResponse()