resume

discord/gateway.py

@@ -943,7 +943,7 @@ class DiscordVoiceWebSocket:
         _log.debug('Voice websocket frame received: %s', msg)
         op = msg['op']
         data = msg['d']  # According to Discord this key is always given
-        self.seq_ack = msg.get('seq', self.seq_ack)  # this key may not be given
+        self.seq_ack = msg.get('seq', self.seq_ack)  # this key could not be given
 
         if op == self.READY:
             await self.initial_connection(data)

discord/voice_state.py

@@ -603,8 +603,8 @@ class VoiceConnectionState:
                     # The following close codes are undocumented so I will document them here.
                     # 1000 - normal closure (obviously)
                     # 4014 - we were externally disconnected (voice channel deleted, we were moved, etc)
-                    # 4015 - voice server has crashed
-                    if exc.code in (1000, 4015):
+                    # 4015 - voice server has crashed, we should resume
+                    if exc.code == 1000:
                         # Don't call disconnect a second time if the websocket closed from a disconnect call
                         if not self._expecting_disconnect:
                             _log.info('Disconnecting from voice normally, close code %d.', exc.code)
@@ -631,6 +631,21 @@ class VoiceConnectionState:
                         else:
                             continue
 
+                    if exc.code == 4015:
+                        try:
+                            await self._connect(
+                                reconnect=reconnect,
+                                timeout=self.timeout,
+                                self_deaf=(self.self_voice_state or self).self_deaf,
+                                self_mute=(self.self_voice_state or self).self_mute,
+                                resume=True,
+                            )
+                        except asyncio.TimeoutError:
+                            _log.warning('Could not resume the voice connection... Disconnecting...')
+                            if self.state is not ConnectionFlowState.disconnected:
+                                await self.disconnect()
+                            break
+
                     _log.debug('Not handling close code %s (%s)', exc.code, exc.reason or 'no reason')
 
                 if not reconnect: