UA Expert not being able to connect to Server

[JFKane]

Hi all,

I want to set a Beaglebone Black as a server sending sensor data (right now it's just random numbers) to my laptop over OPC UA and reading it with UA Expert (OPC Client)

Here is my server.py

from opcua import ua,Server
from random import randint
import time
import datetime

server = Server()

url = "ocp.tcp://128.130.39.50:4840"
server.set_endpoint(url)
server.set_security_policy([
    ua.SecurityPolicyType.NoSecurity,
    ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt,
    ua.SecurityPolicyType.Basic128Rsa15_Sign,
    ua.SecurityPolicyType.Basic256_SignAndEncrypt,
    ua.SecurityPolicyType.Basic256_Sign
])
name="OPCUA_BB_Server"
addspace = server.register_namespace(name)

node = server.get_objects_node()

Param = node.add_object(addspace, "Parameters")

Temp = Param.add_variable(addspace, "Temperature", 0)
Temp.set_writable()

server.start()
print("Server started at {}".format(url))

while True:
    Temperature = randint(0, 100)
    print(Temperature)
    Temp.set_value(Temperature) 
    time.sleep(2)

However, everytime I try to connect UA Expert to the server I get The server does not support the configured security policy 'http://opcfoundation.org/UA/SecurityPolicy#None'

I've tried enabling different configurations on UA Expert (Basic128, Basic256 etc.) but always the same error. Any ideas what could be the problem?

Might be related to #703

[oroulet]

no idea.... this definitely should work. What happens if you do not set any security policy and let everything as defualt?

[ibrahimsadek]

I am not sure, but if you select one security option in the server and client side let's say:

server.set_security_policy([ua.SecurityPolicyType.Basic256_SignAndEncrypt]), then the uaExpert as a client should respond properly.

[JFKane]

Thank you for the suggestions, I tried all scenarios (no security policy, changing UA Expert configuration etc.) but it always returns:

18:04:52.416 | Server Node        |                                | Connecting failed with error 'BadConfigurationError'
18:04:52.401 | Server Node        |                                | Error 'BadConfigurationError' was returned during ActivateSession
18:04:52.358 | Server Node        |                                | The server returned no certificate, all certificate checks will be skipped.
18:04:52.354 | Server Node        |                                | Used UserTokenType: Anonymous
18:04:48.936 | Server Node        |                                | The server does not support the configured security policy 'http://opcfoundation.org/UA/SecurityPolicy#None'.
18:04:48.936 | Server Node        |                                | ApplicationUri: ''

I'm guessing the problem is not the configuration itself but somewhere else, unfortunately I'm kinda stuck...

[startpyy]

I got the same Issue. Did you find any solution? =)

[AndreasHeine]

security_policy =   [
                        ua.SecurityPolicyType.NoSecurity,
                        ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
                        ua.SecurityPolicyType.Basic256Sha256_Sign
                    ]
server.set_security_policy(security_policy)
policyIDs =   [
                "Anonymous", "Basic256Sha256", "Username"
            ]
server.set_security_IDs(policyIDs)

https://github.com/AndreasHeine/PythonOpcUaServer-for-Simatic-S7-1500-OpcUaClient https://github.com/AndreasHeine/SecurePythonOpcUaServer https://github.com/AndreasHeine/SecurePythonOpcUaClient