[Mono-devel-list] un-interoperatible classes .NET -> Mono remoting

Lluis Sanchez lluis at ximian.com
Wed Sep 29 07:19:08 EDT 2004


On dc, 2004-09-29 at 06:23 -0400, Jonathan Pryor wrote:
> On Tue, 2004-09-28 at 04:07, Aleksandar Dezelin wrote:
> > does anybody knows what classes are un-interoperatible between Mono and
> > .NET regarding remoting? I've found thar Hashtable is one of them but I
> > don't understand why? Can somebody explain this topic little further?
> 
> It should be noted (because I haven't seen anyone else mention it) that
> remoting is ONLY guaranteed to work if you're using the same runtime
> version on both ends.  This applies to *both* mono and .NET.
> 
> In particular, remoting between .NET 1.0 and .NET 1.1 WILL NOT ALWAYS
> WORK.  If *anything* of the internal structure of a class changes,
> remoting fails.  Consequently, .NET 2.0 and .NET 1.x are also not likely
> to work in all circumstances either.

But, again, this is a serialization issue. If you use a remoting
formatter that do not rely on the internal structure of classes, then
remoting will be fully interoperable. Unfortunately this is not the case
of the BinaryFormatter and the SoapFormatter (unless you use custom
serialization surrogates for all system classes).

> 
> Wanting Mono to interoperate with all versions of .NET is asking for a
> bit much, especially when Microsoft can't do the same thing.
> 
> Which leaves you with the suggested solution: take control of
> serialization yourself, so that *you* can ensure that all platforms are
> compatible.  This can be done through Jason King's middle layers, or
> though web services, or through some other mechanism.
> 
> The key point is that you CANNOT rely on the default remoting
> functionality when you have different CLI implementations on either end
> of the remoting boundary.  Remoting is very brittle.  Which is probably
> why Microsoft is working on Indigo for the .NET 2.0 remoting solution,
> which will merge remoting, web services, and related functionality.
> 
>  - Jon
> 
> 
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