try {
            sc = new Socket(this.host, this.puerto);

            in = new DataInputStream(sc.getInputStream());
            out = new DataOutputStream(sc.getOutputStream());

            out.writeUTF(PedirUsuario());

            sc.close();

        } catch (IOException ex) {
            Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
        }