Mozes da koristis standardne posix socket funkcije, pa pod winblowsima da program kompajliras sa mingw-om (minimalistic gnu for windows).
Na ovaj nacin mozes da uspostavljas i TCP i UDP konekcije (koliko sam video, RakNet je UDP), a i Unix (Local) konekcije...
While you were hanging yourself on someone else's words
Dying to believe in what you heard
I was staring straight into the shining sun