Hello!

Thank you! The first error indeed coming outside the OPC modules, but the second is coming from OpcUaCore.dll.
It is strange that the OPC ReadValue method call causes the problem.
Normally it wouldn't bother me, but handling 4 try..catch per call slows down the reading process a lot.

BR, SZL

Hello,

I have only one line of code:
var z0 = EasyUAClient.SharedInstance.ReadValue("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", "nsu=http://test.org/UA/Data/ ;i=10854");

When I execute this line in a WinForms Net Framework 4.8 project I got 4 (2x2) errors:

- First error: Descriptor is invalid. (IOException). Errorcode: 6
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) in System.IO\__Error.cs:line 167

This throws two times.

- Second error: BadSecureChannelClosed at Opc.Ua.Bindings.TcpAsyncOperation`1.End(Int32 timeout)

This also throws two times.

After these errors when I continue the code execution the Read operation reads the value successfully and I have the result.

Why these errors are happen before read? When I read again the errors throws also again.

I attach images from the errors:




Quickopc versions.


Thank you for help!