Universal contract not found by WCF client using add service reference

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WCF

I am attempting to process a request/response message in WCF using a universal contract. This works fine if I specify the action in the request and response messages. However, if I put set Action="*" and ReplyAction="*" on the Contract, the client code will no longer compile, giving the error:

'CxTestSenderReceiver.ServiceReference1.CxMessageReceiverServiceClient' does not contain a definition for 'ProcessMessage' and no extension method 'ProcessMessage' accepting a first argument of type 'CxTestSenderReceiver.ServiceReference1.CxMessageReceiverServiceClient' could be found (are you missing a using directive or an assembly reference?)
c:\users\documents\visual studio 2010\Projects\CxMessageService\CxTestSenderReceiver\MainWindow.xaml.cs

Here is my contract:

public interface ICxMessageReceiverService

    {

        [OperationContract(Action="*", ReplyAction="*")]

        System.ServiceModel.Channels.Message ProcessMessage(System.ServiceModel.Channels.Message msg);

    }

The client was set up by using Add Service Reference, so all my client code is really doing is the following:

ServiceReference1.CxMessageReceiverServiceClient client = new ServiceReference1.CxMessageReceiverServiceClient();

System.ServiceModel.Channels.Message msg, response;

msg = System.ServiceModel.Channels.Message.CreateMessage(System.ServiceModel.Channels.MessageVersion.Soap11, "http://tempuri.org/ICxMessageReceiverService/ProcessMessage", data);

response = client.ProcessMessage(msg);

But it won't compile because (as it says in the above error) it is not aware that process message exists. If I change the OperationContract attribute to not have the Action="*" and ReplyAction="*" attributes then it works just fine.

What do I have to do in the client so that I can allow the Action="*" and ReplyAction="*" parameters in my contract?

Thanks,

What I have tried:

I tried to update the service reference after update the operation contract to

[OperationContract(Action="*", ReplyAction="*")]