[Mono-list] Accessing data members in remote objects

[Jamin Philip Gray]

I'm having a problem with remoting.  It works great for accessing methods
on the proxy of a remote object, but not on data members.  When I access a
data member I get:

Unhandled Exception: System.NullReferenceException: A null value was found
where an object instance was required
in <0x00126> 00 TestCode.Remoting.SampleClient:Main (string[])

I'm Attaching the source code for my SampleObject, SampleServer, and
SampleClient.

-- 
name:   Jamin Philip Gray
email:  [EMAIL PROTECTED]
icq:    1361499
aim:    jamingray47
yahoo:  jamin47
web:    http://pubcrawler.org

Got Linux? 


using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

namespace TestCode.Remoting
{
  public class SampleObject : MarshalByRefObject 
  {

    public int counter;

    public SampleObject()
    {
      counter = 0;
    }

    public int GetCount()
    {
      counter++;
      return counter;
    }

    // Make object live forever
    public override Object InitializeLifetimeService()
    {
      return null;
    }
  }
}


using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

namespace TestCode.Remoting
{
  public class SampleServer
  {
    public static void Main(string [] args) 
    {
      // Create an instance of a channel
      TcpChannel channel = new TcpChannel(8080);
      ChannelServices.RegisterChannel(channel);

      // Create an instance of our object
      SampleObject obj = new SampleObject();

      // Publish our object
      RemotingServices.Marshal(obj, "SampleObject");

      System.Console.WriteLine("Press the enter key to exit...");
      System.Console.ReadLine();
    }
  }
}


using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

namespace TestCode.Remoting
{
  public class SampleClient
  {
    public static void Main(string [] args)
    {

      ChannelServices.RegisterChannel(new TcpChannel());
           
      RemotingConfiguration.RegisterWellKnownClientType(
        typeof(SampleObject), 
        "tcp://localhost:8080/SampleObject");
      SampleObject obj = new SampleObject();
      

      // Use the object
      if( obj.Equals(null) )
      {
        System.Console.WriteLine("Error: unable to locate server");
      }
      else
      {
        Console.WriteLine("obj.counter: {0}", obj.counter);
        while (true) 
        {
          Console.WriteLine("counter: {0}", obj.GetCount());
          System.Console.ReadLine();
        }
      }
    } 
  }
}