Проверка установки обработчика

Author: Kirill Kirsanov

client.py

@@ -300,7 +300,8 @@ def accept(self, obj):
 
     def _message_received(self, p):
         """Handler for received message event"""
-        self.message_received_handler(pdu=p)
+        if self.message_received_handler:
+            self.message_received_handler(pdu=p)
         dsmr = smpp.make_pdu('deliver_sm_resp', client=self)
         # , message_id=args['pdu'].sm_default_msg_id)
         dsmr.sequence = p.sequence