Hey Esper!
It's a little confusing to program that but my actual project is a game that uses a similar idea.
I can give you advice and help with communication.

Simply contact me per PM and i'll help you.

Btw.: Atm my project has a login, user management with mysql and some user data stored. also i've got a app system which allows the user to load apps into the game and use them there. i've got only one app developed and this app can also send data to other clients (it's a chat)
All communication things are done with structs and native gs, but afak you can port my system easily to anet without any problems...

Greets Felix