Traceback error when attempting to download data from the China global broker

[RoryPTB]

When I attempt to subscribe to the data from gb.wis.cma.cn, I get the following traceback error:

$ pywis-pubsub subscribe --config china-config.yml --verbosity DEBUG
DEBUG:pywis_pubsub.mqtt:Connecting to broker mqtts://gb.wis.cma.cn:8883 with id pywis-pubsub-377
DEBUG:pywis_pubsub.mqtt:Setting credentials
DEBUG:pywis_pubsub.mqtt:Setting TLS version 2
Traceback (most recent call last):
  File "C:\Users\rptb2\Code\WMO\PubSub\pywis-pubsub\Scripts\pywis-pubsub-script.py", line 33, in <module>
    sys.exit(load_entry_point('pywis-pubsub==0.6.dev0', 'console_scripts', 'pywis-pubsub')())
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\click\core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\click\core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\click\core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\click\core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\click\core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\click\decorators.py", line 26, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "C:\Users\rptb2\Code\WMO\PubSub\pywis-pubsub\lib\site-packages\pywis_pubsub-0.6.dev0-py3.10.egg\pywis_pubsub\subscribe.py", line 206, in subscribe
  File "C:\Users\rptb2\Code\WMO\PubSub\pywis-pubsub\lib\site-packages\pywis_pubsub-0.6.dev0-py3.10.egg\pywis_pubsub\mqtt.py", line 79, in __init__
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 914, in connect
    return self.reconnect()
  File "C:\Users\rptb2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 1073, in reconnect
    sock.do_handshake()
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\ssl.py", line 1342, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1007)

I can confirm this occurs when I am connected to the China global broker using MQTT Explorer. Here is the config file I used as a txt file (as GitHub does not support the yml extension).

[tomkralidis]

@RoryPTB can you set verify_certs: False in your config? This should skip certificate validation.