ServiceFault after ActivateSessionRequest while using certificates

[trevorhodges]

Hello,

Just started trying to work with the OPC UA client. Have been able to get the client working with my TOP Server OPC server with no authentication or certificates. Next step is to use certificates. When attempting to do so, I receive a ServiceFault response from TOP Server after sending the ActivateSessionRequest. All of this occurs when hitting the client.connect() line of code.

Below is the stack trace I'm receiving. Attached is a packet capture that I'm seeing. Note that client is 10.1.70.187 and the server is 10.1.70.159. The OPC server listening port is 49380 ServiceFault.zip

---

UaStatusCodeError Traceback (most recent call last)

in () ----> 1 client.connect() /home/thodges/Programming/MQTT/scadamqttnode/opcuatests/opcuatests/lib/python3.5/site-packages/opcua/client/client.py in connect(self) 215 self.open_secure_channel() 216 self.create_session() --> 217 self.activate_session(username=self.server_url.username, password=self.server_url.password, certificate=self.user_certificate) 218 219 def disconnect(self): /home/thodges/Programming/MQTT/scadamqttnode/opcuatests/opcuatests/lib/python3.5/site-packages/opcua/client/client.py in activate_session(self, username, password, certificate) 387 else: 388 self._add_user_auth(params, username, password) --> 389 return self.uaclient.activate_session(params) 390 391 def _add_anonymous_auth(self, params): /home/thodges/Programming/MQTT/scadamqttnode/opcuatests/opcuatests/lib/python3.5/site-packages/opcua/client/ua_client.py in activate_session(self, parameters) 244 request = ua.ActivateSessionRequest() 245 request.Parameters = parameters --> 246 data = self._uasocket.send_request(request) 247 response = ua.ActivateSessionResponse.from_binary(data) 248 self.logger.debug(response)

[oroulet]

Does certificate login works with uaexpert?

On Thu, Aug 11, 2016, 02:53 Trevor Hodges notifications@github.com wrote:

Hello,

Just started trying to work with the OPC UA client. Have been able to get the client working with my TOP Server OPC server with no authentication or certificates. Next step is to use certificates. When attempting to do so, I receive a ServiceFault response from TOP Server after sending the ActivateSessionRequest. All of this occurs when hitting the client.connect() line of code.

Below is the stack trace I'm receiving. Attached is a packet capture that I'm seeing. Note that client is 10.1.70.187 and the server is 10.1.70.159. The OPC server listening port is 49380 ServiceFault.zip

https://github.com/FreeOpcUa/python-opcua/files/412395/ServiceFault.zip

UaStatusCodeError Traceback (most recent call last) in () ----> 1 client.connect()

/home/thodges/Programming/MQTT/scadamqttnode/opcuatests/opcuatests/lib/python3.5/site-packages/opcua/client/client.py in connect(self) 215 self.open_secure_channel() 216 self.create_session() --> 217 self.activate_session(username=self.server_url.username, password=self.server_url.password, certificate=self.user_certificate) 218 219 def disconnect(self):

/home/thodges/Programming/MQTT/scadamqttnode/opcuatests/opcuatests/lib/python3.5/site-packages/opcua/client/client.py in activate_session(self, username, password, certificate) 387 else: 388 self._add_user_auth(params, username, password) --> 389 return self.uaclient.activate_session(params) 390 391 def _add_anonymous_auth(self, params):

/home/thodges/Programming/MQTT/scadamqttnode/opcuatests/opcuatests/lib/python3.5/site-packages/opcua/client/ua_client.py in activate_session(self, parameters) 244 request = ua.ActivateSessionRequest() 245 request.Parameters = parameters --> 246 data = self._uasocket.send_request(request) 247 response = ua.ActivateSessionResponse.from_binary(data) 248 self.logger.debug(response)

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[cedricleroy]

I didn't test with uaexpert, but I have the same problem with TopServer (though getting a different error):

StatusCode(BadServiceUnsupported)

Here is what I am getting from TopServer log:

_UaServerEndpointCallback: SecureChannel 27972041 opened! Security Mode 1 Security Policy http://opcfoundation.org/UA/SecurityPolicy#None

What would be the next steps to nailing down this bug?

[oroulet]

Use wireshark and record a working session with uaexpert and one not working from python. Then we should be able to spot the difference

[oroulet]

Of course try to set up both clients in a similar way.