My network server doesn't work.

I use this code to build a server and go on it, but I don't know a code for the player and the one for the network doesn't work. Any help?

     var IPServer = "127.0.0.1";
 var IPServ = "";
  
 function OnGUI (){
  
 if (Network.peerType == NetworkPeerType.Disconnected){
 IPServer = GUI.TextField(new Rect(120,10,100,20),IPServer);
 if (GUI.Button (new Rect(10,10,100,30),"Connect")){
 Network.Connect(IPServer, 25000);
 }
 if (GUI.Button (new Rect(10,50,100,30),"Start Server")){
 Network.InitializeServer(50, 25000,false);
  
 for (var go : GameObject in FindObjectsOfType(GameObject)){
 go.SendMessage("OnLoaded", SendMessageOptions.DontRequireReceiver);
 }
 }
 }
  
 else{
 if(Network.isServer){
 IPServ = Network.player.ipAddress;
 GUI.Label(new Rect(140,20,250,40),"IP to be used: "+IPServ );
 }
  
 if (GUI.Button (new Rect(10,10,100,30),"Exit")){
 if(Network.isServer){
 networkView.RPC("ExitCL", RPCMode.Others);
 }
 Network.Disconnect();
 }
 }
  
 }
  
 function OnConnectedToServer() {
  
 for (var go : GameObject in FindObjectsOfType(GameObject))
 go.SendMessage("OnLoaded", SendMessageOptions.DontRequireReceiver);
 }