Don't use the GS multiplayersystem With a plugin (GSTNet, Populace,...) you can start the server/client in the script and not with a command line. This is one of the big reasons why a multiplayergame with the gs mp-system isn't realy possible (without PRO)
Dark_Samurai
ANet - A stable and secure network plugin with multi-zone, unlimited players, voip, server-list features,... (for A7/A8)! get free version