Problem creating standalone client

[jaeger]

Hi,

I am trying to create a standalone client, which accesses a JBoss server using a Session bean. In my simple example, I would basically try to use a Session bean's network-capabilities to call some method on the server and get the result back to the client.

I started with the Fibonacci tutorial found at JBossIDE. After some fiddling around, I got a working servlet example. So I tried to create a simple standalone client, which does the same as the servlet: connect to the Session bean, call a method and display the result. All this from the commandline, so I can use System.out.writeln() for output.

This standalone client works great when I start it on the same machine where also the JBoss server is running.

Starting it on a different machine, however, does not work. It seems the program always tries to connect to localhost (127.0.0.1), but of course there is no JBoss server answering.

Using tcpdump, I found that the program is in fact connecting to the remote JBoss server first, and some data is exchanged, but afterwards it tries to connect to localhost.

Maybe I have a conceptual problem here: can I lookup a Session bean on a remote server and use it, without having a JBoss server also running on the local machine?

I would be glad for any hint, as I spent more that a day now trying to find what's wrong here, and I am sure it is only a very small detail I am missing.

Thanks,

Christoph Jäger

P.S.: Just for completeness, I am using JBoss 4.0.1sp1 on a Fedora Linux machine, Java5.0, and the machine I am trying to run my client from is a Windows machine, also Java5.0.

Here is the source code of my client program:

package tutorial.text;

import java.io.IOException;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

import tutorial.interfaces.Fibo;
import tutorial.interfaces.FiboHome;

public class ComputeMain {

 private FiboHome home;

 public static void main(String[] args) throws IOException {

 ComputeMain main = new ComputeMain();
 main.run(50);
 }

 public ComputeMain() {
 try {
 Context context = new InitialContext();
 Object ref = context.lookup("ejb/Fibo");
 home = (FiboHome) PortableRemoteObject.narrow(ref, FiboHome.class);
 } catch (Exception e) {
 System.err.println("Lookup of java:/comp/env/ failed");
 e.printStackTrace();
 }
 }

 protected void run(int limit) {

 double[] result=null;


 try {
 Fibo bean = home.create();
 result = bean.compute(limit);
 bean.remove();
 } catch (Exception e) {
 System.err.println("Call of bean.compute() failed");
 e.printStackTrace();
 return;
 }

 System.out.println("got result:");
 for (int i=0;i<result.length;i++)
 {
 System.out.println(i+": "+result);
 }
 System.out.println();
 }
 }

and my jndi.properties file:

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.provider.url=jnp://172.24.1.202:1099
java.naming.factory.url.pkgs=org.jboss.naming.client:org.jboss.naming:org.jnp.interfaces