How to use rUDP for a mobile multiplayer game using Unity?

Sorry if this is not the right forum to post in.
I would like to test mobile multiplayer using rUDP. However, the problem is that I can’t find anything regarding rUDP in the documentation or any tutorials about setting up Unity and Nakama server. Can you help me and direct me to the right source to learn?
Thanks.

Any one from @HeroicLabs ?

Hello @umen,

Please see the following post: Is rUDP scheme with Unity currently possible? - #2 by novabyte.

Best.

So in short it is not implemented … so what do you use ? Websocket ? pure TCP /UDP
talking only on mobile .
Using godot