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POBizTalk Generic WCF Http Receive Location for web services operations returning void
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  1. POBizTalk Generic WCF Http Receive Location for web services operations returning void
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    copied!<p>I'm trying to make a generic BizTalk receive location (WCF-WSHttp) that would <strong>accept any web service call for methods returning "void"</strong>. (The location is generic because BizTalk is forwarding the message to the real service implementation)</p> <p>I know that true one-way operations are not supported (except for WCF MSMQ), so the operation has [OperationContract(IsOneWay=false)]</p> <p>I'm able to call the generic service with a WCF client, and BizTalk correctly handles the message. However, BizTalk then returns a response that the client does not recognize, and the clients throws the following exception:</p> <blockquote> <p>System.ServiceModel.CommunicationException: Error in deserializing body of reply message for operation 'MyOperationName'. <strong>The OperationFormatter could not deserialize any information from the Message because the Message is empty (IsEmpty = true).</strong></p> </blockquote> <p>This is an example of a response the client would recognize (tested by calling the service implementation directly, without BizTalk as an intermediary):</p> <pre><code>&lt;s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing"&gt; &lt;s:Header&gt; &lt;a:Action s:mustUnderstand="1"/&gt; &lt;a:RelatesTo&gt;urn:uuid:102509d6-15c6-4959-9a98-b714d5d16a1f&lt;/a:RelatesTo&gt; &lt;/s:Header&gt; &lt;s:Body&gt; &lt;MyOperationResponse xmlns="http://mynamespace"/&gt; &lt;/s:Body&gt; &lt;/s:Envelope&gt; </code></pre> <p>However, here is an example of the response BizTalk returns:</p> <pre><code> &lt;s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing"&gt; &lt;s:Header&gt; &lt;a:RelatesTo&gt;urn:uuid:9e794c0c-65f0-4807-b1f2-84a30587df9b&lt;/a:RelatesTo&gt; &lt;/s:Header&gt; &lt;s:Body/&gt; &lt;/s:Envelope&gt; </code></pre> <p>(I'm using a one-way receive location so I did not have to write any code to have this returned)</p> <p>This has two differences with the XML the client expects:</p> <ul> <li>No &lt;a:Action&gt;</li> <li>Empty &lt;s:Body&gt;</li> </ul> <p><strong>I see two ways to resolve that:</strong></p> <ol> <li>Modify the operation contract (C# interface) to expect an empty response/no action instead of what it currently expects. </li> <li>Configure BizTalk to return the XML the and the client expects</li> </ol> <p>Any ideas on how to obtain either solution 1 or solution 2?</p> <p>For solution 1, I tried playing with the [OperationContract(ReplyAction=...)] attribute but could not find a way to make that work.</p>
 

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