[Mono-list] A couple of Remoting Questions

[Jean-Marc André]

I'm not competent enough to answer all your questions but I know that 
you can use ethereal to catch the SOAP messages exchanged between the 
client and the server. It's both available for linux and windows but you 
will not be able to catch messages on the loopback interface with windows.

Just want to add that I'm getting the same intermittent warning messages.

Jonathan Stowe wrote:

>I have been playing around with remoting and a couple of things have
>come up
>
>I am trying a test based in the example in MS SDK:
>
>Client:
>
>using System;
>using System.Runtime.Remoting;
>using System.Runtime.Remoting.Channels;
>using System.Runtime.Remoting.Channels.Http;
>
>namespace RemotingTest
>{
>  public class Client
>  {
>    public static void Main(string [] args)
>    {
>      RemotingConfiguration.Configure("remoting.config");
>      HelloServer obj =
>(HelloServer)Activator.GetObject(typeof(RemotingTest.HelloServer),
>"http://localhost:8085/Hello");
>      if (obj == null)
>      {
>         System.Console.WriteLine("Could not locate server");
>      }
>      else
>      {
>         string name = "blah";
>         if ( args.Length > 0 )
>         {
>            name = args[0];
>         }
>         Console.WriteLine(obj.Hello(name));
>      }
>    }
>  }
>}
>
>
>Server:
>
>using System;
>using System.Runtime.Remoting;
>using System.Runtime.Remoting.Channels;
>using System.Runtime.Remoting.Channels.Http;
>
>namespace RemotingTest
>{
>  public class Server
>  {
>
>    public static void Main(string [] args) {
>
>      HttpChannel chan = new HttpChannel(8085);
>      ChannelServices.RegisterChannel(chan);
>     
>RemotingConfiguration.RegisterWellKnownServiceType(Type.GetType("RemotingTest.HelloServer,Object"), "Hello", WellKnownObjectMode.SingleCall);
>      System.Console.WriteLine("Hit <enter> to exit...");
>      System.Console.ReadLine();
>    }
>  }
>}
>
>Test Class:
>
>using System;
>using System.Runtime.Remoting;
>using System.Runtime.Remoting.Channels;
>using System.Runtime.Remoting.Channels.Http;
>using System.Reflection;
>
>namespace RemotingTest
>{
>  public class HelloServer : MarshalByRefObject
>  {
>
>    public HelloServer()
>    {
>      Console.WriteLine(this.ToString() + " activated");
>    }
>
>    public String Hello(String name)
>    {
>      Console.WriteLine("HelloServer.Hello : {0}", name);
>      return String.Format("Hi there {0}", name);
>    }
>  }
>}
>
>
>Firstly, unlike using the MS.NET SDK it will not work unless one loads
>the configuration like:
>
><configuration>
>   <system.runtime.remoting>
>      <application>
>         <client>
>         </client>
>         <channels>
>            <channel
>               ref="http"
>               port="0"
>            />
>         </channels>
>      </application>
>   </system.runtime.remoting>
></configuration>
>
>I was wondering why the difference in behaviour - does windows have the
>http channels already registered in some default configuration which
>mono doesn't have or is there a difference in behaviour of
>ChannelServices.RegisterChannel() in the mono library - I notice that
>the registered channels are stored in a static array in the
>ChannelServices class so it strikes me that another program is not going
>to have access to this - or am I missing something here?  It would be
>nice to have an example that worked the same with both mono and the MS
>SDK.
>
>Secondly I am getting weird intermittent behaviour from both server and
>client code - every once in a while I am getting:
>
>** (process:5787): ERROR (recursed) **: file class.c: line 1272
>(mono_class_init): assertion failed: (class)
>aborting...
>
>from the client code, which appears to hang afterwards - the server
>however behaves as expected.  I am unable to reproduce this at will
>however.
>
>I also am occasionally getting:
>
> 
>** (server.exe:12805): WARNING **: : unref on 38 called when ref was
>already 0
> 
>>From the server after the remote method has been called - again this is
>intermittent and not reproducible at will.
>
>It also appears that neither the client or the server are cleaning up
>properly as there are parentless processes left behind (which I take to
>be threads - but I never found out how to distinguish processes and
>threads with 'ps' on Linux).  This is with Beta 1 on Mandrake 9.2 x86.
>
>Finally does anyone know of any documentation regarding the SOAP
>messages involved in http remoting or am I going to have to use a proxy
>to dump the exchanges?
>
>Thanks.
>
>
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