Unable to connect my client device to AWS greengrass core

[sagark82]

Hi, I am trying to connect 2 laptops on my personal wifi with one laptop serving as AWS greengrass core while another acting as client device. While trying the basic_discovery.py getting socket error as shown below. Kindly help me to identify the cause.
1/ I have setup the policy for both core device and client device as specified in the tutorial

Debug log is also attached

PS E:\AWS Greengrass\certs> python3 "E:\AWS Greengrass\basic_discovery.py" --thing_name myLaptop02 --topic 'clients/myLaptop02/hello/world' --message 'Hello World!' --ca_file AmazonRootCA1.pem --cert device.pem.crt --key private.pem.key --region us-east-1 --verbosity Warn
Performing greengrass discovery...
[ERROR] [2023-01-16T12:10:19Z] [00002308] [socket] - id=000001A2C35B5D20 handle=00000000000004EC: connect completion triggered with error -1073741252
[ERROR] [2023-01-16T12:10:19Z] [00002308] [socket] - id=000001A2C35B5D20 handle=00000000000004EC: connection error with code 1049
Traceback (most recent call last):
[ERROR] [2023-01-16T12:10:20Z] [00002308] [http-connection] - static: Client connection failed with error 1051 (AWS_IO_SOCKET_CLOSED).
File "E:\AWS Greengrass\basic_discovery.py", line 62, in
discover_response = resp_future.result()
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\concurrent\futures_base.py", line 458, in result
return self.__get_result()
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\concurrent\futures_base.py", line 403, in __get_result
raise self._exception
File "C:\Users\DELL\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\awsiot\greengrass_discovery.py", line 103, in on_connection_completed
connection = conn_future.result()
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\concurrent\futures_base.py", line 451, in result
return self.__get_result()
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\concurrent\futures_base.py", line 403, in __get_result
raise self._exception
awscrt.exceptions.AwsCrtError: AWS_IO_SOCKET_CLOSED: socket is closed.

Debug_Log.txt

• The client device is attached to the core device as shown in the command output - list_device.txt
• I have tried to follow all the steps of the tutorial. The policy permissions are also attached for both core (core_device.txt) and client device (client_device.txt)
• The PoC is being done on home wifi with no proxy

core_device.txt
client_device.txt
list_device.txt

[jmklix]

Can you try testing with a fully permissive policy to rule out that the error might be caused because of that:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "*"
      ],
      "Resource": [
        "*"
      ]
    }
  ]
}

Also can you link which tutorial you are following? (I would like to make sure that you're not trying to follow an out of date tutorial)

[sagark82]

Hello @jmklix , thanks for the response. I changed the policy as suggested but no change in outcome. Tutorial link I am following is below

https://docs.aws.amazon.com/greengrass/v2/developerguide/client-devices-tutorial.html#enable-client-device-support

[sagark82]

Hello @jmklix , I deleted the client device and created a new one with new cert and full permissive policy and it worked. Thanks. We can close this

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.