use trigger_write() instead of a raw .send(b"")

src/IRCBot.py

@@ -322,6 +322,7 @@ class Bot(object):
             elif server.ping_due() and not server.ping_sent:
                 server.send_ping()
                 server.ping_sent = True
+
             if not server.socket.connected:
                 self._events.on("server.disconnect").call(server=server)
                 self.disconnect(server)
@@ -339,4 +340,4 @@ class Bot(object):
                 throttle_filled = True
 
         if throttle_filled:
-            self._wtrigger_client.send(b"TRIGGER")
+            self.trigger_write()