Don't ratelimit room create events

synapse/handlers/directory.py

@@ -155,4 +155,4 @@ def send_room_alias_update_event(self, user_id, room_id):
             "room_id": room_id,
             "sender": user_id,
             "content": {"aliases": aliases},
-        })
+        }, ratelimit=False)

synapse/handlers/message.py

@@ -106,7 +106,7 @@ def get_messages(self, user_id=None, room_id=None, pagin_config=None,
         defer.returnValue(chunk)
 
     @defer.inlineCallbacks
-    def create_and_send_event(self, event_dict):
+    def create_and_send_event(self, event_dict, ratelimit=True):
         """ Given a dict from a client, create and handle a new event.
 
         Creates an FrozenEvent object, filling out auth_events, prev_events,
@@ -123,7 +123,8 @@ def create_and_send_event(self, event_dict):
 
         self.validator.validate_new(builder)
 
-        self.ratelimit(builder.user_id)
+        if ratelimit:
+            self.ratelimit(builder.user_id)
         # TODO(paul): Why does 'event' not have a 'user' object?
         user = self.hs.parse_userid(builder.user_id)
         assert self.hs.is_mine(user), "User must be our own: %s" % (user,)