Web-socket握手错误AWS IOT

Question

当我尝试使用aws- IOT -python-sdk连接到AWS iot时，我得到了这个WebSocket握手错误。我使用WebSocket + MQTT版本来发布和接收数据。非常奇怪的是，几个小时前它还工作得很好，代码没有一行变化，只是开始抛出错误，我不明白发生了什么？是AWS IOT本身还是我这边发生了什么！

我用来连接AWS IOT的代码。

from AWSIoTPythonSDK.MQTTLib import AWSIoTMQTTClient
from config import IOT_ENDPOINT, IOT_CREDENTIAL_PATH

def connect(mqttClientId):
  try:
    myMQTTClient = AWSIoTMQTTClient(mqttClientId, useWebsocket=True)
    myMQTTClient.configureEndpoint(IOT_ENDPOINT, 443)
    myMQTTClient.configureCredentials(IOT_CREDENTIAL_PATH)

    myMQTTClient.configureAutoReconnectBackoffTime(1, 32, 20)
    # Infinite offline Publish queueing
    myMQTTClient.configureOfflinePublishQueueing(-1)
    myMQTTClient.configureDrainingFrequency(2)  # Draining: 2 Hz
    myMQTTClient.configureConnectDisconnectTimeout(10)  # 10 sec
    myMQTTClient.configureMQTTOperationTimeout(5)  # 5 sec

    myMQTTClient.connect()
    return myMQTTClient
  except Exception as error:
    print(error)
    print "No Internet Connection... Can't connect AWS IOT"

谢谢。

Answer 1

您的STS颁发的凭据似乎已过期。要解决此问题，您需要在每次连接脱机时刷新：

creds = provider.load()
awsiot.configureIAMCredentials(...)

更多信息您可以在此问题上查看Disconnect followed by Websocket Handshake Error #215