I just downloaded the evaluation version of the Prosys SDK.

Initially I ran the provided Sample Console Server and used the Sample Console Client to read values/attributes from it. This seemed to have worked well.

However, then I wanted to try and read values off of a third party OPC UA Server. In this case I had the Kepware Server Ex installed, so I tried that. I used the Kepware Configuration tool to add an endpoint and then tried using the Sample Console Client to connect to it.

Using Security None, I was not able to connect to the server at all. I got a “Requested endpoint not supported by the server” error.
Initially using Security SIgn or Sign & Encrypt did not work either until I added the client in the Trusted Clients in the Kepware UA configuration.
After that using Security Sign or Sign & Encrypt got me to a Accept Certificate prompt but in both cases entering Accept (or Yes) resulted in a client crash.

I get the following console output:

…
* The Certificate is self-signed.

07/22/2014 11:56:42.935 INFO Certificate ‘1E0B2A…………………………….33188’ added to trusted certificates.
ServerState changed from Unknown to Running
Exception in thread “main” java.lang.NullPointerException
at org.opcfoundation.ua.utils.ObjectUtils.appendObjectAsString(Unknown Source)
at org.opcfoundation.ua.utils.ObjectUtils._printFieldsDeep(Unknown Source)
at org.opcfoundation.ua.utils.ObjectUtils.printFieldsDeep(Unknown Source)
at org.opcfoundation.ua.core.ServerStatusDataType.toString(Unknown Source)
at java.lang.String.valueOf(String.java:2854)
at java.lang.StringBuilder.append(StringBuilder.java:128)
at com.prosysopc.ua.samples.client.SampleConsoleClient.connect(SampleConsoleClient.java:603)
at com.prosysopc.ua.samples.client.SampleConsoleClient.mainMenu(SampleConsoleClient.java:1270)
at com.prosysopc.ua.samples.client.SampleConsoleClient.main(SampleConsoleClient.java:148)

I use the following settings in the SampleConsoleClient…

E
opc.tcp://localhost:49320
s
A

The server is running and does have data available. Am I doing something wrong or is this a bug in the SampleConsoleClient. Kepware is a major player in the OPC industry and thus I would think that their server would be OPC compliant.