I also have the problem with timeout one minute after the call begun when client cancles? (VS2008 SP1 Fx 3.5 SP1)

Do you guys came up with any solution for this problem?

Thanks for great articles!

/Henrik

great work on the classes you made, but there is a flaw (at least with 3.5sp1, with which I am trying):
The cancellation works fine, but after 1 minute (or the configured timeout value of the channel), the callback function on the client throws a timeout exception.
I thought of just handling this exception, but I don’t think this would be the best practice (since, the client will be actually waiting for a reply for each canceled call; if you try to even close the channel during this time, it just blocks waiting for the call to complete).
Do you think there is a better practice (eg. notify the client by issuing the callback immediately after cancel with a null or something)?

Since you are apparently the only one on the net seriously dealing with the cancellation of asyc wcf calls, your help would be mostly appreciated.

Great blog. Thanks. Getting AsyncStatus is good but any thoughts on how one would implement a progress interface for the Async operation? I am invoking an Async file transfer as part of the Async operation and would like to respond to requests for progresss and display in UI on the client side.

What´s happend when implements this example in not Service Host ?, example: publish WCF Service on the Web.

How to maintenance single instance for PendingOperationController?