Actually read from the voice websocket & fix heartbeat.

This change makes it so that the buffer doesn't fill and the voice server drops the socket.

Also, use correct interval for voice websocket heartbeat.

discord/gateway.py

@@ -549,7 +549,7 @@ class DiscordVoiceWebSocket(websockets.client.WebSocketClientProtocol):
         data = msg.get('d')
 
         if op == self.READY:
-            interval = (data['heartbeat_interval'] / 100.0) - 5
+            interval = data['heartbeat_interval'] / 1000.0
             self._keep_alive = VoiceKeepAliveHandler(ws=self, interval=interval)
             self._keep_alive.start()
             yield from self.initial_connection(data)

discord/voice_client.py

@@ -225,6 +225,16 @@ class VoiceClient:
                 self._connected.set()
                 break
 
+        self.loop.create_task(self.poll_voice_ws())
+
+    @asyncio.coroutine
+    def poll_voice_ws(self):
+        """|coro|
+        Reads from the voice websocket while connected.
+        """
+        while self._connected.is_set():
+            yield from self.ws.poll_event()
+
     @asyncio.coroutine
     def disconnect(self):
         """|coro|