How to make plugin for wii u

I have wii u devkit and I intend to make an online multiplayer game but I can’t find any clues about how to do this.
Can you give me the place that I can learn or some example.
Thanks in advance.
IBaa. Sanuk software.

You should have better luck asking it in the Newsgroups.
After all, this kind of stuff is still covered under Nintendo’s NDA, and to avoid violation, nobody will give you a proper answer publicly.