UNABLE TO connect to Siemens 828D

[IRISBFW]

Kindly some one help
I need to connect to siemens 828D Controller through OPCUA
It completely working with the python
Now i need to do the same with C++
I am able to connect to server without username and password
But when i try to connect to the server with username and password, it

I connect to server with
std::string endpoint = "opc.tcp://username:password@192.168.100.40:4840";

I am below error
receive ServiceFault from Server with StatusCode: The user identity token is not valid. (0x80200000)

[guojing555]

  您好，我最近正在休假中，无法亲自回复您的邮件。我将在假期结束后，尽快给您回复。

[IRISBFW]

Can someone help on this?????

[IRISBFW]

Still awaiting for the replay
Come one help please ???

[zhaodadong]

std::vectorOpcUa::UserTokenPolicy GetUserTokens() const
{
OpcUa::UserTokenPolicy policy;
policy.IssuedTokenType = "IssuedTokenType";
policy.IssuerEndpointUrl = "IssuerEndpointUrl";
policy.PolicyId = "PolicyId";
policy.SecurityPolicyUri = "SecurityPolicyUri";
policy.TokenType = UserTokenType::UserName;
return std::vectorOpcUa::UserTokenPolicy(1, policy);
}
Maybe need confirm some information supplied by the Ua server and add to endpoint?
Or ignore some token requirement on siemens 828D Controller？