Applet-Servlet Communication EOFException

Hi! i´ve been searching and searching through forums because it seems this problem is very common, but none of the solutions i´ve seen so far suits me, so i´m here looking for some help because i´ve been stuck one week with this. First of all sorry if my english isn´t the best... i´m a bit rusty...

Well, i had some code that worked perfectly, but i needed to perform some changes because i needed the servlet to send more info to the applet, and here started the problems, when i made the changes it started to throw EOFException when i was trying to read the InputStream, and furthermore when i came back to the original code it started to throw the exception in the same place too :banghead:

So here i am... don´t know what to do now and i entrust to you to give me some tips.

Here comes some code.

Applet:

Code:

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            public ListasComponentesSeleccionables cargarListasComponentes( ) throws IOException, ClassNotFoundException {
               
                String serv = "/Desaladora/cargarListasComponentesApplet.do";
                String host = Principal.documentBase.getHost( );
               
                URL direccion = new URL( "http", host, 8080, serv );
                // Create conection
                URLConnection connection = direccion.openConnection( );
               
                connection.setDoInput( true ); 
                connection.setDoOutput( true );
                connection.setUseCaches( false );
               
                connection.setRequestProperty( "Content-Type", "application/x-java-serialized-object" );

                ObjectOutputStream output;
                output = new ObjectOutputStream( connection.getOutputStream( ) );
               
                output.writeObject( new Boolean(true) );
               
                output.flush( );
                output.close( );
               
               
                ObjectInputStream input = new ObjectInputStream( connection.getInputStream( ) ); //<-- Here is the problem
                ListasComponentesSeleccionables response = new ListasComponentesSeleccionables( );
               
                response = ( ListasComponentesSeleccionables ) input.readObject( );
               
                return response;
        }

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Servlet:

Code:

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public class CargarListasComponentesAppletAction extends Action {

       
public ActionForward execute(        ActionMapping mapping,
                                                            ActionForm form,
                                                            HttpServletRequest request,
                                                            HttpServletResponse response ) throws ServletException, IOException, Exception  {

                InitialContext context = new InitialContext();
                SensorManagerService sensor_service;
                ActuatorManagerService actuator_service;
               

                Globals.LOGGER_SECURITY.debug( "Entering ACTION 'CargarListasComponentesAppletAction'" );

                response.setContentType("application/x-java-serialized-object");
               
                try
                {
       
                        ObjectInputStream bufferentrada = new ObjectInputStream(request.getInputStream());
                       
                        Boolean peticionOK = (Boolean)bufferentrada.readObject();
                       
                       
                        ObjectOutputStream buffersalida = new ObjectOutputStream(response.getOutputStream());
                       
                       
                        sensor_service = ( SensorManagerService ) context.lookup( "desaladora/SensorManagerServiceBean/local" );
                        ArrayList<AlarmConnectedSensorDTO> sensorList = sensor_service.findAllSensorsToAlarms();
                       
                        actuator_service = ( ActuatorManagerService ) context.lookup( "desaladora/ActuatorManagerServiceBean/local" );
                        ArrayList<AlarmConnectedActuatorDTO> actuatorList = actuator_service.findAllActuatorsToAlarms();
                       
                       
                        buffersalida.writeObject( crearListasSeleccionables(sensorList, actuatorList) );
                       
                       
                        buffersalida.flush();
                }
                catch(Exception e)
                {
                        System.out.println("Error en la trasmision de datos");
                }
               
                return null;
        }
       
        private ListasComponentesSeleccionables crearListasSeleccionables(ArrayList<AlarmConnectedSensorDTO> sensorList, ArrayList<AlarmConnectedActuatorDTO> actuatorList) {

                Vector<Integer> vectorSensores = new Vector<Integer>();
                Vector<Integer> vectorActuadores = new Vector<Integer>();
               
                for(AlarmConnectedSensorDTO sensor : sensorList) {
                        vectorSensores.add(sensor.getIdSensor( ));
                }
                for(AlarmConnectedActuatorDTO actuator : actuatorList) {
                        vectorActuadores.add(actuator.getIdActuator( ));
                }
                ListasComponentesSeleccionables listasComponentesSeleccionables = new ListasComponentesSeleccionables(vectorSensores, vectorActuadores);
               
                return listasComponentesSeleccionables;
        }
       
}

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Thank you for your time

i´ve been running some test in another computer, and that code simply works, but it doesn´t work in the machine i usually work.

Maybe someway the stream get corrupt? the info i´ve been trying to send and started throwing the exception may still be in the stream? I don´t know what to think right now