[IronPython] remoting from IronPython

Dino Viehland dinov at exchange.microsoft.com
Wed Jun 14 17:16:03 PDT 2006


Are you remoting to another process, or to another app domain?  Does the other process have access to IronPython.dll ?

One thing you might want to try doing is installing IronPython into the GAC (assuming this is beta 7, or if you re-built w/ the Signed Release or Signed Debug build modes w/ your own key), and then try this.   This would ensure that the type would be loadable in both app domains, even if the files aren't readily available.  It's also go a long way to making sure we're getting loaded into the correct loader context.

Another helpful debugging tip for debugging CLR interaction issues is running IronPythonConsole w/ the -X:ExceptionDetail option.  That will get you a much better stack trace about where the issue is occurring.

I'd need to get some time to setup a repro to be able to say much more about this - but it's definitely something we'll want to make works (or understand why it doesn't if it's impossible to make work) before 1.0.


-----Original Message-----
From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Ralph Soons
Sent: Wednesday, June 14, 2006 6:57 AM
To: users at lists.ironpython.com
Subject: Re: [IronPython] remoting from IronPython

Hi again,

I searched a little further and found out the following:

When using remoting - server activated objects:
and s = NameSpace.RemoteObject()
I discovered the "Cannot load type 'clr:IronPython.Runtime.IDynamicObject,
IronPython...." exception occurs on the following location:
namespace: IronPython.Runtime
file: Ops.cs
funtion: public static DynamicType GetDynamicType(object o) {
Line: if (dt != null) return dt.GetDynamicType(); (line 562)

during debuging I discovered that 'object o' (input of the function) is of type MarshalByRefObject so I guess its my remote object. The first line in the function is IDynamicObject dt = o as IDynamicObject;. dt is not null after executing this line. This is strange because its being casted to IDynamicObject, which isn't implemented by my remote object. There after when the next line is executed if (dt != null) return dt.GetDynamicType();, the exception occurs.
Can anyone tell me why this is going wrong?

I also tried to use client activated objects. In that case the remoting call is working correctly.

Thanks for your help again.
Ralph Soons

>From: "Ralph Soons" <ralph.soons.asml at hotmail.com>
>Reply-To: Discussion of IronPython <users at lists.ironpython.com>
>To: users at lists.ironpython.com
>Subject: [IronPython] remoting from IronPython
>Date: Wed, 14 Jun 2006 09:09:57 +0200
>
>Hi all,
>
>I am trying to call an function on a server via remoting, using IronPython.
>First I created a c# server/client to test everything.
>
>In the C# client I have the following code:
>RemotingConfiguration.Configure("executablename.exe.config", false);
>RemoteObject object = new RemoteObject(); I can now reach my remote
>object from the client.
>
>There after I used IronPython to do the same in python:
>System.Runtime.Remoting.RemotingConfiguration.Configure("IronPythonTest
>.exe.config",
>0)
>s = NameSpace.RemoteObject()
>I now get the following error:
>Cannot load type 'clr:IronPython.Runtime.IDynamicObject, IronPython
>
>I also tried:
>s = System.Activator.GetObject(
>System.Type.GetType(NameSpace.RemoteObject),
>"http://localhost:9000/mytest" )
>I then get this error:
>#  File , line 0, in GetObject##10
>#  File mscorlib, line unknown, in GetObject
>#SystemError: Trying to create a proxy to an unbound type.
>
>Can someone tell me if its possible to use remoting from IronPython or
>does any one has an idea what I am doing wrong?
>
>Many thanks!
>Ralph Soons
>
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