Could not send an open secure channel request on connect

chauser · Post by **chauser** » 12 Nov 2015, 15:31

Hello,

I want to connect to a OPC UA Server via the Connect Method.

I am using the following code:

 EndpointDescription endpointDescription = new Discovery().GetMostSecureEndpoint(paramEndpoint);

                //SecurityMode
                switch (securityMode)
                {
                    case "None":
                        endpointDescription.SecurityMode = MessageSecurityMode.None;
                        break;
                    case "Sign":
                        endpointDescription.SecurityMode = MessageSecurityMode.Sign;
                        break;
                    case "SignAndEncrypt":
                        endpointDescription.SecurityMode = MessageSecurityMode.SignAndEncrypt;
                        break;
                }

                //SecurityPolicy
                endpointDescription.SecurityPolicyUri = @"http://opcfoundation.org/UA/SecurityPolicy#" + securityPolicy;
                endpointDescription.TransportProfileUri = "http://opcfoundation.org/UA-Profile/Transport/uatcp-uasc-uabinary";

                if (currentSession == null)
                {
                    string key = "..."; //my licence key
                    byte[] keyArray = GetBytes(key);

                    ICertificate certificate = new Certificate(keyArray);

                    localSession.Application.AddCertificateToTrustList(certificate);
                    localSession.Application.ApplicationCertificate = certificate;
                    localSession.UserIdentity = new UserIdentity();
                    localSession.UserIdentity.Certificate = certificate;            
                }

                localSession.SessionName = paramSessionName;
                localSession.Connect(endpointDescription.EndpointUrl, SecuritySelection.BestAvailable);

When i set the security policy and the security mode to "None" then there is now licence needed for the connection.
But when I am using the licence for the certification as I do and set a new policy and mode, I get the exception: "Could not send an open secure channel request"

Can some one tell me, what I am doing wrong here ?

When starting my client I also setup the licence file via:

Code: Select all

ApplicationLicenseManager.AddProcessLicenses(System.Reflection.Assembly.GetExecutingAssembly(), "license.lic");

Greetings

chauser