Fix typo

otbox.py

@@ -300,14 +300,14 @@ def _on_mqtt_connect(self, client, userdata, flags, rc):
         self.tb.on_mqtt_connect()
 
         # discover motes
-        self._excecute_command_safely('box', 'all', json.dumps({'token': 123}), 'discovermotes')
+        self._execute_command_safely('box', 'all', json.dumps({'token': 123}), 'discovermotes')
 
     def _on_mqtt_message(self, client, userdata, message):
 
         # call the handler
-        self._excecute_commands(message.topic, message.payload)
+        self._execute_commands(message.topic, message.payload)
 
-    def _excecute_commands(self, topic, payload):
+    def _execute_commands(self, topic, payload):
         # parse the topic to extract deviceType, deviceId and cmd ([0-9\-]+)
         try:
             m = re.search('{0}/deviceType/([a-z]+)/deviceId/([\w,\-]+)/cmd/([a-z]+)'.format(self.testbed), topic)
@@ -336,15 +336,15 @@ def _excecute_commands(self, topic, payload):
             for d in device_to_comand:
                 commands_handlers     += [threading.Thread(
                                 name   = '{0}_command_{1}'.format(d, cmd),
-                                target = self._excecute_command_safely,
+                                target = self._execute_command_safely,
                                 args   = (deviceType, d, payload, cmd))
                                             ]
             for handler in commands_handlers:
                 handler.start()
         except:
             self.logger.exception("Could not parse command with topic %s", topic)
 
-    def _excecute_command_safely(self, deviceType, deviceId, payload, cmd):
+    def _execute_command_safely(self, deviceType, deviceId, payload, cmd):
         '''
         Executes the handler of a command in a try/except environment so exception doesn't crash server.
         '''