Fix deadlock issue when joining large guilds.

discord/client.py

@@ -378,8 +378,6 @@ class Client:
             log.info('Unhandled event {}'.format(event))
         else:
             result = func(data)
-            if asyncio.iscoroutine(result):
-               yield from result
 
     @asyncio.coroutine
     def _make_websocket(self, initial=True):

discord/state.py

@@ -338,6 +338,17 @@ class ConnectionState:
         return self._add_server_from_data(data)
 
     @asyncio.coroutine
+    def _chunk_and_dispatch(self, server, unavailable):
+        yield from self.chunker(server)
+        chunks = list(self.chunks_needed(server))
+        if chunks:
+            yield from asyncio.wait(chunks)
+
+        if unavailable == False:
+            self.dispatch('server_available', server)
+        else:
+            self.dispatch('server_join', server)
+
     def parse_guild_create(self, data):
         unavailable = data.get('unavailable')
         if unavailable == True:
@@ -367,11 +378,8 @@ class ConnectionState:
 
             # since we're not waiting for 'useful' READY we'll just
             # do the chunk request here
-            yield from self.chunker(server)
-            chunks = list(self.chunks_needed(server))
-            if chunks:
-                yield from asyncio.wait(chunks)
-
+            utils.create_task(self._chunk_and_dispatch(server, unavailable), loop=self.loop)
+            return
 
         # Dispatch available if newly available
         if unavailable == False: