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WSDualHttpBinding Callback in cocurrent mode

Posted By:      Posted Date: September 10, 2010    Points: 0   Category :WCF
Hi, Would it be possible to make the callback in cocurrent mode when the server calls the clients through callback interface? We are using WSDualHttpBinding between Server and Client. At this moment, when the server sends a message throught the callback interface to the client while client is busying with processing some data, client will keep processing data until finish then responds to the call from the server. We would like as soon as the server calls using the callback, the client need to respond immediately. Is it possible?   The reason we need this is we want to add the ability to issue a Cancel command for the long progressing work on client from the server. The client is is checking a flag regularly to determine whether to continue work during the processing. The callback from the server to client will need to set the flag as soon as the message is send out. Thanks  

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