Call into WCF Service WITHOUT specifying SoapAction

[Gaston]

Hi,
My WCF web service will be called from a Java client that we don't control.
The client sends its requests WITHOUT specifying the SoapAction. This results
in this exception from the service:

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Header>
<ActivityId CorrelationId="a7ad16f5-b8b9-4b71-9a53-d0e6f29f5020"
xmlns="http://schemas.microsoft.com/2004/09/ServiceModel/Diagnostics">496debc4-488d-46f3-8181-8bfaef14a9e1</ActivityId>
</s:Header>
<s:Body>
<s:Fault>
<faultcode
xmlns:a="http://schemas.microsoft.com/ws/2005/05/addressing/none">a:ActionNotSupported</faultcode>
<faultstring xml:lang="nl-BE">The message with Action '' cannot be
processed at the receiver, due to a ContractFilter mismatch at the
EndpointDispatcher. This may be because of either a contract mismatch
(mismatched Actions between sender and receiver) or a binding/security
mismatch between the sender and the receiver. Check that sender and receiver
have the same contract and the same binding (including security requirements,
e.g. Message, Transport, None).</faultstring>
<detail>
<z:anyType i:nil="true"
xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance"/>
</detail>
</s:Fault>
</s:Body>
</s:Envelope>

I suppose that there is some way to configure my web service to behave like
an ASMX web service (in this case: not requiring the SoapAction http header).
I have checked out the web.config file, with no succes.

I have looked at the method:

[System.ServiceModel.OperationContractAttribute(Action="http://xxx.com/UIM/Notification/wsdl/1/notificationUser")]
[System.ServiceModel.XmlSerializerFormatAttribute()]
xxx.notificationUserResponse
notificationUser(xxx.notificationUserRequest request);

Here I have tried to remove the Action parameter, put it to "", put it to
"*", all with no luck.

Any help would be highly appreciated!

Thanks in advance,
Gaston Verelst

[Prakash Patil]

Hi Gaston,

The problem here is that WCF service is getting a soapaction as ''
(blank or missing action), you can either send it explicitly from your
client or put it to Action="*" in WCF.

Try putting it directly as below:

[OperationContract(Action="*")]
xxx.notificationUserResponse
notificationUser(xxx.notificationUserRequest request);

and this should work, as all actions without any action parameters will
be accepted by WCF.

Let me know if you still face any issue.

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