Thanks for the reply on this and I am mostly investigating what would be required to build up a small external server in either C++ or Golang (or a few others) which I can use reasonably well.
For me it’s the question and challenge as to what is needed in an Unreal Engine multiplayer game. I did start trying to look at the LyraGame (UE5) project which might give some hints but am still getting use to how Blueprints work, and they appear to be more like a visual programming language so should not be too hard to get a handle on.
What I am actually interested in for this area is to see if I can call an external library (DLL, or .so) from an Unreal example for which I think should absolutely be possible in that Unreal is mainly in C++. If Ican do that then I can perhaps just develop my own network shim library and not have to use the built-in library.
Just some thoughts and Thanks again