Or u could try to use IMessageFilter::HandleIncomingCall
- dont know its limitatations -
but looks like it could fit the bill

arun

----- Original Message -----
From: <Klaus.NeubergerNBGM.SIEMENS.DE>
To: <DCOMDISCUSS.MICROSOFT.COM>
Sent: Friday, February 15, 2002 3:00 PM
Subject: Re: method call timeout?

> Hi Keith,
>
> you run into a big problem of DCOM. I am working a long time on solving
the
> problem, calling DCOM objects with a specific timeout. All our solutions
so
> far, have some leaks where we run into ugly timeouts of DCOM again and
> which are not under our control.
>
> I knew of 3 different possibilities.
>
> 1. Do calls to DCOM on a different thread! The problem is you have to
> marshal the interface pointer from the main thread to the calling thread.
> We build a generic solution, using an own IRPCChannel. But it figured out
> that we run into the DCOM timeout again, when we do the marshalling, which
> is not under our control! :-(
>
> 2. If you don't need solutions for Win9X and Win NT 4.0. Tou can use the
> ICancelObject to build a generic solution with a timeout smart pointer.
The
> problem here is, that you get into trouble when you use this solution in a
> MTA. It should work in a STA, but I didn't test it myself (in DCOM
> scenarios i no longer beliefe, what i didn't get to work myself). Here you
> can cancel a DCOM call, but under some conditions it takes up about 20
> seconds to get the call canceled by DCOM! :-(
>
> 3. You can use Async DCOM calls. But this mean that you usually have to
> redesign your application for doing all calls asynchronous. You also have
> to be aware that this only work on Win2k or newer versions. It's also not
> possible to call IDispatch or Dual interfaces asynchronous! :-(
>
> Hope this helps you not to run into the same nightmare of DCOM, as I did.
>
> best regards
>
> Klaus Neuberger
>
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