/Users/rkchaudhary/workspace/AWSIotCore/MaaS360CEProxyClientPy/aws-iot-device-sdk-python-v2/venv/bin/python /Users/rkchaudhary/workspace/AWSIotCore/MaaS360CEProxyClientPy/aws-iot-device-sdk-python-v2/samples/pubsub.py --endpoint auvgqxr1y355a-ats.iot.us-east-2.amazonaws.com --port 8883 --ca_file /Users/rkchaudhary/workspace/AWSIotCore/MaaS360CEProxyClientPy/root-CA.crt --cert /Users/rkchaudhary/workspace/AWSIotCore/MaaS360CEProxyClientPy/1196392_rkc_High_Priority-cert.pem.crt --key /Users/rkchaudhary/workspace/AWSIotCore/MaaS360CEProxyClientPy/1196392_rkc_High_Priority-private.pem.key --client_id 1196392_rkc_High_Priority --proxy_host 10.163.74.49 --proxy_port 8080 --topic maas360/CE/1196392/request/1196392_rkc_High_Priority --count 0 
Connecting to auvgqxr1y355a-ats.iot.us-east-2.amazonaws.com with client ID '1196392_rkc_High_Priority'...
Connection failed with error code: AWS_IO_TLS_ERROR_NEGOTIATION_FAILURE: TLS (SSL) negotiation failed
Traceback (most recent call last):
  File "/Users/rkchaudhary/workspace/AWSIotCore/MaaS360CEProxyClientPy/aws-iot-device-sdk-python-v2/samples/pubsub.py", line 107, in <module>
    connect_future.result()
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/concurrent/futures/_base.py", line 445, in result
    return self.__get_result()
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/concurrent/futures/_base.py", line 390, in __get_result
    raise self._exception
awscrt.exceptions.AwsCrtError: AWS_IO_TLS_ERROR_NEGOTIATION_FAILURE: TLS (SSL) negotiation failed