private static void printMenu(){
        System.out.println("Welcome to dropMusic");
        System.out.println("1- Login");
        System.out.println("2- Sign up");
    }
    private static String menu() {
        int opt;
        String msg="";
        Scanner scan = new Scanner(System.in);
        opt = scan.nextInt();
        switch (opt) {
        case 1:
            scan.nextLine();
            String user, pass;
            System.out.println("Username: ");
            user = scan.nextLine();
            System.out.println("Password: ");
            pass = scan.nextLine();
            msg = "type / login ; username / " + user + ";  password / " + pass;
            break;


        case 2:
            String name,mail;
            scan.nextLine();
            System.out.println("Nome: ");
            name = scan.nextLine();
            System.out.println("Username: ");
            user = scan.nextLine();
            System.out.println("Password: ");
            pass = scan.nextLine();
            System.out.println("Email: ");
            mail = scan.nextLine();
            msg = "type / sign up ; item_count / 3 ; name / " + name +" ; username / "+user+ " ;  password / " + pass+" ; mail / "+mail;
            System.out.println(msg);
            break;
        }
        return msg;

    }
 public static void main(String[] args)
            throws MalformedURLException, RemoteException, NotBoundException, IOException {

        String line = "";
        line="";
        System.getProperties().put("java.security.policy", "out/production/projeto2/policy.all");

        System.setSecurityManager(new RMISecurityManager());

        ServerRmiInt si = null;

        ClientRmi c = new ClientRmi();

        c.setNome(args[0]);

        si = (ServerRmiInt) Naming.lookup(nomeServer);
        si.subscribe(args[0], c);

        System.out.println("Request sent to Server");

        InputStreamReader input = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(input);
        printMenu();
        // entra em ciclo para comunnicacao com o server rmi
        while (true) {
            try {


                line = menu();
                si.sendMulti(line, args[0], c);

                if (line.equals("type / share")) {// comando share para partilhar up/download
                    uploadDownloadTCP();
                }
            } catch (java.rmi.ConnectException e) {// trata da falha no servidor principal para passar ao backup
                si = (ServerRmiInt) Naming.lookup(nomeServer);
                si.subscribe(args[0], c);
                System.out.println("aqui");
                si.sendMulti(line, args[0], c);
            } catch (RemoteException re) {
                System.out.println("Exception remote in main " + re);
            } catch (IOException e) {
                System.out.println("Exception in main " + e);
            }
        }
    }

}