JavaRMI example is good betwen windows but dont work under linux

Question

Hello all, this is my first post here, Im from mexico, then, my english is not good, but i will try to explain my problem and I hope you undertand. Well, first all, Im using ubuntu 8.04 and version of JDK: java-6-sun-1.6.0.10.
I have this code on the server:
public class RmiServidor extends UnicastRemoteObject implements     InterfazReceptorMensajes {     
     private Registry registro;
          public RmiServidor() throws RemoteException {
          try {
// System.setProperty("java.security.policy", "/home/gerardo/Escritorio/msdos/java.policy");
// System.setProperty("java.rmi.server.codebase", "file://home/gerardo/Escritorio/msdos/");
// if (System.getSecurityManager()==null)
// System.setSecurityManager(new RMISecurityManager());
     registro = LocateRegistry.createRegistry(3232);
               registro.rebind("rmiServidor192.168.1.2", this);
               System.out.println("Server ok");
          } catch (RemoteException e) {
               throw e;
     public String recibirMensaje(String cadena) throws RemoteException {
     System.out.println("El cliente dice "+cadena);
     return "Hola "+cadena;
     public static void main(String[] args) {
          try {
               new RmiServidor();
          } catch (Exception e) {
               e.printStackTrace();
               System.exit(1);
this code on the client:
public class RmiCliente{
InterfazReceptorMensajes rmiServidor;
Registry registro;
public RmiCliente() throws IOException {
     conectarseAlServidor();
public void conectarseAlServidor() {
try {
// System.setProperty("java.security.policy", "/home/gerardo/Escritorio/msdos/java.policy");
// System.setProperty("java.rmi.server.codebase", "file://home/gerardo/Escritorio/msdos/");
// if (System.getSecurityManager()==null)
// System.setSecurityManager(new RMISecurityManager());
registro = LocateRegistry.getRegistry("192.168.1.2",3232);
rmiServidor = (InterfazReceptorMensajes) (registro.lookup("rmiServidor192.168.1.2"));
} catch (RemoteException e) {
System.out.println("Remote Exception");
} catch (NotBoundException e) {
e.printStackTrace();
this code on the interface:
public interface InterfazReceptorMensajes extends Remote
     String recibirMensaje(String cadena) throws RemoteException;
and another class with a bite of code:
try{
RmiCliente rmi = new RmiCliente();
System.out.println(rmi.rmiServidor.recibirMensaje(" como estas "));
}catch(IOException es){
System.out.println("there is a exception");
Then, when i run the server on the first windows machine, and the client on the linux machine, all works ok!
on the server:
-El cliente dice como estas
on the client:
-Hola como estas
but, when I run the server on the linux machine, and the client on the windows machine,
on the server:
on the client
-there is a exception
I hope you can help me.
I have the same problem when I work with 2 linux machines, dont works the client and neither the server
but with 2 windows, the 2 machines work ok!

Answer 1

Thanks a lot!!!
well, the exception is the further:
java.rmi.ConnectException: Connection refused to host: 127.0.1.1; nested excepti
on is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unkn
own Source)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source)
at $Proxy0.recibirMensaje(Unknown Source)
at RmiCliente.main(RmiCliente.java:32)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown S
ource)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown S
ource)
... 8 more
I read that making something like: System.setProperty("java.rmi.server.hostname", "192.168.1.2"), but i dont know how to apply it.
I tried to do this:
System.setProperty("java.security.policy", "java.policy");
System.setProperty("java.rmi.server.codebase", "");
System.setProperty("java.rmi.server.hostname", "192.168.1.2");
if (System.getSecurityManager()==null)
System.setSecurityManager(new RMISecurityManager());
where java.police have :
grant {
permission java.security.AllPermission;
I run my application with:
javac *.java
java RmiServidor
and i tried to do
javac *.java
rmic RmiServidor
java RmiServidor
but dont work, the exception is same.
Why windows works ok with the same code?, is something related with the SO?
Thanks in advance, and an apologize for my bad english.