def _get_shadow_client(self):
if self._shadow_client is not None:
return self._shadow_client
if self.use_websocket:
client = AWSIoTMQTTShadowClient(self.client_id, useWebsocket=True)
else:
client = AWSIoTMQTTShadowClient(self.client_id)
client.configureEndpoint(self.endpoint, self.port)
if self.use_websocket:
client.configureCredentials(self.root_ca)
else:
client.configureCredentials(self.root_ca, self.private_key, self.certificate)
client.configureAutoReconnectBackoffTime(1, 32, 20)
#client.configureOfflinePublishQueueing(-1)
#client.configureDrainingFrequency(2)
client.configureConnectDisconnectTimeout(10)
client.configureMQTTOperationTimeout(5)
client.clearLastWill()
client.connect()
self._shadow_client = client
return self._shadow_client
