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POMessageInspector message: "This message cannot support the operation because it has been copied."
 

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    <p>Here's the thing: </p> <p>I have a business request that all WCF messages should have a specific header, for tracking and security reasons.</p> <p>Anyway, I setup an implementation of <code>MessageInspector</code> on both the client and the service -- we control both ends so far -- and all worked well on the prototype phase.</p> <p>However, today, something went awire and stopped working. </p> <p>I redid the prototype from scratch and things works just fine. I'm loosing my marbles over it for the entire afternoon.</p> <p>The relevant code is as follow:</p> <pre><code>public class DispatchEndpointBehavior : IEndpointBehavior { public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher) { var mi = new MessageInspector(); endpointDispatcher.DispatchRuntime.MessageInspectors.Add(mi); } // ... } public class DispatchMessageInspector : IDispatchMessageInspector { public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext) { var index = request.Headers.FindHeader("name", ""); if (index == -1) throw new MessageSecurityException("..."); var value = request.Headers.GetHeader&lt;Guid&gt;(index); // do something with the value return null; } // ... } public class ClientEndpointBehavior : IClientEndpointBehavior { public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime) { var mi = new ClientSecurityMessageInspector(); clientRuntime.MessageInspectors.Add(mi); } // ... } public class ClientSecurityMessageInspector : IClientMessageInspector { public object BeforeSendRequest(ref Message request, IClientChannel channel) { request.Headers.Add(MessageHeader.CreateHeader("name", "", Guid.NewGuid())); return null; } // ... } </code></pre> <p>Here is the configuration for the service:</p> <pre><code>&lt;system.serviceModel&gt; &lt;services&gt; &lt;service behaviorConfiguration="Default" name="[Service Name]"&gt; &lt;endpoint address="" binding="basicHttpBinding" behaviorConfiguration="headerBehavior" contract="[Service Contract]"/&gt; &lt;endpoint address="mex" ... /&gt; &lt;/service&gt; &lt;/services&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior name="Default"&gt; &lt;serviceMetadata httpGetEnabled="true" /&gt; &lt;serviceDebug includeExceptionDetailInFaults="true" /&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;endpointBehaviors&gt; &lt;behavior name="headerBehavior"&gt; &lt;headerBehavior headerName="token" /&gt; &lt;/behavior&gt; &lt;/endpointBehaviors&gt; &lt;/behaviors&gt; &lt;extensions&gt; &lt;behaviorExtensions&gt; &lt;add name="headerBehavior" type="[Implementation Type]" /&gt; &lt;/behaviorExtensions&gt; &lt;/extensions&gt; &lt;/system.serviceModel&gt; </code></pre> <p>Analogous, the client configuration is:</p> <pre><code>&lt;system.serviceModel&gt; &lt;bindings&gt; &lt;basicHttpBinding&gt; &lt;binding name="[Service name]" ... &gt; &lt;readerQuotas ... /&gt; &lt;security mode="None"&gt; &lt;transport clientCredentialType="None" proxyCredentialType="None" realm=""/&gt; &lt;message clientCredentialType="UserName" algorithmSuite="Default" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/basicHttpBinding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;endpoint address="http://.../MyService.svc" binding="basicHttpBinding" bindingConfiguration="Default" contract="[Service Contract]" name="[Service Name]" behaviorConfiguration="headerBehavior" /&gt; &lt;/client&gt; &lt;behaviors&gt; &lt;endpointBehaviors&gt; &lt;behavior name="headerBehavior"&gt; &lt;headerBehavior headerName="prosper-security-token" securityTokenValueService="[Implementation Type]" securityTokenValueGetterMethodName="[Method Name]" /&gt; &lt;/behavior&gt; &lt;/endpointBehaviors&gt; &lt;/behaviors&gt; &lt;extensions&gt; &lt;behaviorExtensions&gt; &lt;add name="headerBehavior" type="[Implementation Type]" /&gt; &lt;/behaviorExtensions&gt; &lt;/extensions&gt; &lt;/system.serviceModel&gt; </code></pre> <p><strong>Edited to Add</strong></p> <p>As requested, the exception stack trace is as follows:</p> <pre><code>(System.ServiceModel.FaultException) This message cannot support the operation because it has been copied. Server stack trace: at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc&amp; rpc) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&amp; msgData, Int32 type) at ConsoleApplication1.UserManagementService.IUserManagement.CreateUser(String username, String password, String[] systemCodes) at ConsoleApplication1.UserManagementService.UserManagementClient.CreateUser(String username, String password, String[] systemCodes) in C:\Users\Paulo Santos\Documents\Visual Studio 2008\Projects\PJonDevelopment\ConsoleApplication1\ConsoleApplication1\Service References\UserManagementService\Reference.cs at ConsoleApplication1.Program.Main(String[] args) in C:\Users\Paulo Santos\Documents\Visual Studio 2008\Projects\PJonDevelopment\ConsoleApplication1\ConsoleApplication1\Program.cs </code></pre> <p><strong>Edited to Add</strong></p> <p>As told in one of the comments I've posted a prototype project that works here: <a href="http://pjondevelopment.50webs.com/files/ServiceModel.zip" rel="nofollow">ServiceModel.zip</a></p> <p>I can't stress enough that the prototype works. The only thing I don't know is why I suddenly started getting this weird message. I don't copy the message and only deal with headers, and everywhere I search say that reading the message is a big no-no.</p> <p>I dread the fact that with so many points to inspect, even replace, the entire message within <strong>WCF</strong> model, the architects designed with such an object that even if you look at it it goes poof.</p> <p>If you're giving the opportunity to inspect, make a solid objec that can sustain the hardships of behing manipulated by anyone who wants to inspect it.</p>
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