if(Data sent by user is good){
			http.NewIdentity(); //Set new session identity 
			http.SessionSet("RIGHT", AsString(us->GetRight())); //Set Right of user
			http.SessionSet("USERNAME", us->GetLogin()); //Set username of user
			http.Redirect(PrivateScreen); //Redirect to the privateScreen
		}else{
			http.Redirect(Auth); //Else redirect to authentification page
		}

	if( !http[".USERNAME"].ToString().IsEmpty()){
		...Process everythings
	}else{
		http.Redirect(Auth); //Else redirect to authentification page
	}