code: def connect(self, client_id):
          
  
          if self.client is not None:
              raise InternalError("Connect called on an alreaded connected MQTT client")
  
          client = AWSIoTPythonSDK.MQTTLib.AWSIoTMQTTClient(client_id, useWebsocket=self.websockets)
  
          if self.websockets:
              client.configureEndpoint(self.endpoint, 443)
              client.configureCredentials(self.root)
  
              if self.iam_session is None:
                  client.configureIAMCredentials(self.iam_key, self.iam_secret)
              else:
                  client.configureIAMCredentials(self.iam_key, self.iam_secret, self.iam_session)
          else:
              client.configureEndpoint(self.endpoint, 8883)
              client.configureCredentials(self.root, self.key, self.cert)
  
          client.configureOfflinePublishQueueing(0)
  
          try:
              client.connect()
              self.client = client
          except operationError as exc:
              raise InternalError("Could not connect to AWS IOT", message=exc.message)
  
          self.sequencer.reset()
docs: Connect to AWS IOT with the given client_id
  
          Args:
              client_id (string): The client ID passed to the MQTT message broker