Web套接字握手错误AWS IOT

Question

当我尝试使用aws-iot-python-sdk连接到AWS IOT时，出现此WebSocket握手错误。我正在使用WebSocket + MQTT版本发布和接收数据。非常奇怪的是，它在几个小时前运行良好，没有一行代码更改，只是开始引发错误，我很困惑发生了什么？是AWS IOT本身还是在我这边发生了什么！！！

我用于连接到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。