Multiple servers and multiple clients on one machine

Question

Hi,
I was hoping someone could give me some direction as to how to go about creating multiple servers and muliple clients on the one computer using RMI and threads. I intend to have say 4 servents (able to perform both client and server methods) running on the one computer, with the clients being able to connect to each of the servers. (I'm doing this to emulate using 4 computers, which I don't have!). I know I have to use different ports to do this. How do I go about the following using RMI - start up a server (port number as argument from command line?), which starts a thread listening for connections from the other clients.. when a new connection is established between server and client, then start a new thread which 'handles' that connection.
The examples I've seen of RMI only deal with single server and single client... I'd appreciate any suggestions as to how to go about this problem!!

Answer 1

Hi,
I suggest not to use the rmiregistry program at all
but to start the registry in a program of your own.
Then you can specify all you need (url, port, even
client and server socket) as command line argument.
You need something like this:
Registry registry = null;
Remote server = null;
try
{ // this succeeds if the registry already runs
  registry = LocateRegistry.getRegistry(yourRegistry);
  server = registry.rebind( yourServer );     
}catch( RemoteException )
{ // no registry reachable, create one
  registry = LocateRegistry.createRegistry(yourRegistry);                 
  server = registry.rebind( yourServer );     
}Have fun,
wiedkla