Re: IIS DLLHOST and COM

HI.

It looks like you are confusing a couple of issues here.

1. you cannot late bind to a COM dll from an ASP page you can only early
bind.
2. you are using COM when you late bind or early bind unless you are
specifying the second parameter on the createobject call (servername) or
using MTS, COM+ to call a dll on another machine.
3. In regards to IIS, IIS and COM+ (dllHost.exe) they are intertwinded.

when you choose LOW then all of your COM objects are loaded into IIS memory
space....If you cause a fatal error you will take down ALL web sites on IIS

When you choose Mediam.  you com objects are called into an instance of
DLLHOST.exe that IIS is using for several sites.

When you choose HIGH you will get a separate instance of Dllhost.exe for
that web site.  An errors will cause only that site to fail

hope that helps

DOUG


-----Original Message-----
From: Technical discussion of VBCOM [mailto:[email protected]]On
Behalf Of Greg Robinson
Sent: Friday, October 11, 2002 1:05 PM
To: [email protected]
Subject: [VBCOM] IIS DLLHOST and COM


As I dive deeper into .NET, I am starting to understand COM a little better;
what timing!.  The COM lights are coming on.  There is still one thing I
want to make sure I understand though.

When I load an ASP page from IIS and that page late-binds to COM Objects
and the site is set to medium pooling, is this 'COM' or DCOM in action when
alls are made to the COM Objects?  I have always assumed COM as I have
always
looked at DCOM as a way to remote to another machine.

Same question for Low pooling.  I assume this is COM and not DCOM.






Greg Robinson
Director of Training and .NET Technologies
Scribble Software and Training
www.scribblesoftware.com
www.scribbletraining.com

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