Hi,

I am testing PubSub implementation of Prosys OPC UA Simulation Server. Using the JSON encoding it works great, but I am unable to parse UADP messages.

I tried to parse the metadata payload regarding this documentation: https://reference.opcfoundation.org/Core/Part14/v104/docs/7.2.2#_Ref463016249
I was able to parse the message until “Payload”.

Based on ExtendedFlags2 I am expecting a 7.2.2.4.2 UADP Discovery Response NetworkMessage.
This will start with ResponseType, but ResponseType is 0, which is unexpected. After that all the parsing results to invalid data.

To make sure the error was not in my interpretation of the documentation, I tried an open source library. However, it fails at the same point:
https://github.com/siemens/opc-ua-pubsub-dotnet

Based on the documentation and the mentioned library I am unable to parse the UADP data. Any ideas?

P.S.: I updated the server to the newest version 5.4.6-148