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POWCF REST Service not accepting JSON in .Net 4
 

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    <p>I've been trying out the StandardEndpoints that were introduced as part of .Net 4 and I'm getting the most peculiar of errors.</p> <p>My code</p> <pre><code>[ServiceContract] public interface IAuthenticator { [OperationContract] [WebInvoke(UriTemplate = "AuthenticateUser", Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest, ResponseFormat = WebMessageFormat.Json)] AuthPacket AuthenticateUser(string Username, string Password, string DeviceId); } </code></pre> <p>My web.config</p> <p> </p> <pre><code>&lt;system.web&gt; &lt;compilation debug="true" targetFramework="4.0" /&gt; &lt;/system.web&gt; &lt;system.webServer&gt; &lt;modules runAllManagedModulesForAllRequests="true"&gt; &lt;/modules&gt; &lt;/system.webServer&gt; &lt;system.serviceModel&gt; &lt;serviceHostingEnvironment aspNetCompatibilityEnabled="true"/&gt; &lt;standardEndpoints&gt; &lt;webHttpEndpoint&gt; &lt;!-- Configure the WCF REST service base address via the global.asax.cs file and the default endpoint via the attributes on the &lt;standardEndpoint&gt; element below --&gt; &lt;standardEndpoint name="" helpEnabled="true" automaticFormatSelectionEnabled="true"/&gt; &lt;/webHttpEndpoint&gt; &lt;/standardEndpoints&gt; &lt;/system.serviceModel&gt; </code></pre> <p></p> <p>The exception that is driving me crazy!</p> <pre><code>415 Cannot process the message because the content type 'application/json' was not the expected type 'text/xml; charset=utf-8'. </code></pre> <p>I can make the problem going away by going back to the .Net 3.5 standard of declaring each service, but, unless I am mistaken, one of the major upgrades in WCF with .Net 4 was it's ability to handle stuff like this. Am I doing something wrong?</p>
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    1. CODo you tried remove `BodyStyle = WebMessageBodyStyle.WrappedRequest` attribute? How you host the WFC service? Do you use .svc? Which `factory` do you use in the .svc file?
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    2. COThis is wrapped in a .svc file without a factory defined.
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    3. COYou should try to use .svc with the factory `"System.ServiceModel.Activation.WebServiceHostFactory"` or include additional section in the web.config which do the same without .svc file. See http://stackoverflow.com/questions/4680162/host-wcf-in-mvc2-site/4680617#4680617 for details. Moreover it could help if you include client code (jQuery.ajax or what you use) which follows to the described error message.
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