RMI Server on MultiHome machine

Question

Dear all,
I have a machine with two network interfaces (two IP addresses) , one IP address is "192.168.69.1" other is "192.168.70.1"(hostname is bind to this IP) , I am invoking this server's methods remotly using Client application that is running on "192.168.69.14", from the client machine only "192.168.69.1" is accessible and i have no access to IP "192.168.70.1".
When i start rmi registry via rmiregistry command without giving any port number then program works fine.
import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class Server implements Hello {
    public Server() {}
    public String sayHello() {
        return "Hello, world!";
    public static void main(String args[]) {
        try {
             //RMI hostname
          System.setProperty("java.rmi.server.hostname", "192.168.69.1");
             Server obj = new Server();
             Hello stub = (Hello) UnicastRemoteObject.exportObject(obj,0);
             //Bind the remote object's stub in the registry
             Registry registry = LocateRegistry.getRegistry();
             registry.bind("Hello", stub);
             System.err.println("Server ready");
         } catch (Exception e) {
             System.err.println("Server exception: " + e.toString());
             e.printStackTrace();
}Client.java
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
public class Client {
    private Client() {}
    public static void main(String[] args) {
        String host = (args.length < 1) ? null : args[0];
        try {
            Registry registry = LocateRegistry.getRegistry(host);
            Hello stub = (Hello) registry.lookup("Hello");
            String response = stub.sayHello();
            System.out.println("response: " + response);
        } catch (Exception e) {
            System.err.println("Client exception: " + e.toString());
            e.printStackTrace();
}Whenever i start rmiregistry on some specified port e.g. rmiregistry 6655 , and uses the server version that access the rmiregistry from specified port like blow
import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class Server implements Hello {
    public Server() {}
    public String sayHello() {
        return "Hello, world!";
    public static void main(String args[]) {
        try {
             //RMI hostname
          System.setProperty("java.rmi.server.hostname", "192.168.69.1");
             Server obj = new Server();
             Hello stub = (Hello) UnicastRemoteObject.exportObject(obj,0);
             //Bind the remote object's stub in the registry
             Registry registry = LocateRegistry.getRegistry(6655);
             registry.bind("Hello", stub);
             System.err.println("Server ready");
         } catch (Exception e) {
             System.err.println("Server exception: " + e.toString());
             e.printStackTrace();
}My Client application is unable to invoke remote Object
I got following exception
$ java Client 192.168.69.1
Client exception: java.rmi.ConnectException: Connection refused to host: 192.168.69.1; nested exception is:
        java.net.ConnectException: Connection refused
java.rmi.ConnectException: Connection refused to host: 192.168.69.1; nested exception is:
        java.net.ConnectException: Connection refused
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:574)
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:306)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at Client.main(Client.java:15)
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
        at java.net.Socket.connect(Socket.java:516)
        at java.net.Socket.connect(Socket.java:466)
        at java.net.Socket.<init>(Socket.java:366)
        at java.net.Socket.<init>(Socket.java:179)
        at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
        at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:569)
        ... 5 moreKindly someone have idea to solve the problem ?
Thanks

Answer 1

did you try starting your rmiregistry with "-J-Djava.rmi.server.hostname=192.168.69.1" ?