non-authoritative or peer to peer question from an 'old-bee'

I'm not new to programming and I'm not new to Unity but I am new to Authoritative Multiplayer and I really just don't need it. The current project that I am sandboxing has players coming together about every 15-20 minutes for about 5 minutes, they than separate and while they may 'see' each other they cannot cheat each other. Nor can they 'cheat' each other when they come together. Back in the olden days, I would have given everybody, each other's IP address and basically sent messages when each player made their move. I'm looking for a similar way to do this. Also we are working this game for multiple platforms and have already been setting it up on Windows and Xbox and the Mac is right next to my right foot waiting for it's deployment so which documentation am I looking for here?
Regards,
BubbaRichard

 

Wow, no one?

 

@BubbaRichard Hey!,

Yes indeed you can create that type of functionality easily with the LLAPI , even with the HLAPI.

Check these out.
https://docs.unity3d.com/Manual/UnityWebRequest-LLAPI.html

On the other hand , If you are used or wanting to use something more like a bare-bone message system you can create your own using C# TCP capabilities .

https://www.youtube.com/watch?v=MW91_l2dnnU&ab_channel=HardlyDifficult
https://www.codeproject.com/Articles/1415/Introduction-to-TCP-client-server-in-C