Marshalling issue while using rmi

Question

im trying to use rmi. The code below is the code that im using it to bind.

    @Override
    public void init(String serviceName) throws RemoteException {
    /*if(System.getSecurityManager() == null){
        System.setSecurityManager(new RMISecurityManager());
    }*/
    try {
        String host = InetAddress.getLocalHost().getHostName();
        String url = "rmi://"+ host + "/"+ serviceName;
        //String url = "//localhost/" + serviceName;
        Naming.rebind(url,this);
    } catch (UnknownHostException e) { 
        e.printStackTrace();
    } catch (MalformedURLException e) { 
        e.printStackTrace();
    }
}

no matter which url i use im getting the exception below. It never finds the class to marshall. Can someone help me about this issue. Thanks in advance.

java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
java.lang.ClassNotFoundException: ceng443.hw3.base.SocialNetworkServer

Answer 1

You need a securitymanager in order to download any code using RMI, but you have it commented out in the fragment you posted. Can you try uncommenting your securitymanager setup?