Connection Refused, HELP

Question

Hi all,
I am trying to write a very basic server, and at the moment I havent even assigned it anything to do, as I cant even get the thing to start up. Whenever I try and run it I get the following error:
Server
access denied (java.net.SocketPermission Osian2 resolve)
java.security.AccessControlException: access denied (java.net.SocketPermission Osian2 resolve)
     at java.security.AccessControlContext.checkPermission(AccessControlContext.java:272)
     at java.security.AccessController.checkPermission(AccessController.java:399)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:545)
     at java.lang.SecurityManager.checkConnect(SecurityManager.java:1042)
     at java.net.InetAddress.getAllByName0(InetAddress.java:559)
     at java.net.InetAddress.getAllByName0(InetAddress.java:540)
     at java.net.InetAddress.getByName(InetAddress.java:449)
     at java.net.Socket.<init>(Socket.java:100)
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:25)
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:120)
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:499)
     at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:190)
     at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:174)
     at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:318)
     at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
     at java.rmi.Naming.rebind(Naming.java:160)
     at rmiControler2.main(rmiControler2.java:53)
the 2 classes that I have written are as follows:
import java.rmi.RMISecurityManager;
import java.rmi.Naming;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.RemoteException;
public class rmiControler2 extends UnicastRemoteObject implements sqlHandler
public rmiControler2() throws RemoteException
super();
public int getCon()
//put what is required here
return 0;
public void closeCon(int num)
//close connection here
public static void main(String[] args)
System.out.println("Server");
if (System.getSecurityManager() == null)
System.setSecurityManager(new RMISecurityManager());
String url = args.length < 1
? "rmi://Osian2/rc"
: args[0];
try
sqlHandler rc = new rmiControler2();
Naming.rebind(url, rc);
} catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
import java.rmi.*;
public interface sqlHandler extends Remote
public int getCon()
throws RemoteException;
public void closeCon(int pos)
throws RemoteException;
ps Osian2 is the name of my computer, I have tried this with LocalHost and my IP Address, I would also like to know if I have to specify the name of the host in the client side of the app?

Answer 1

Sounds to me like you got a problem whit the Java policy...
Make a policy file and use it in start up of the server...
grant {
permission java.net.SocketPermission "*", "accept, connect, listen, resolve";
permission java.util.PropertyPermission "*", "read";
permission java.io.FilePermission "<<ALL FILES>>", "read, read, write, delete, execute";
permission java.lang.RuntimePermission "setIO";
java -Djava.security.policy="policyFile.policy" "TheRMIServer"
sverigeterje