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Problems when performing HTTP Post to WCF Service (Error 415: Cannot process the message because of content type mismatch)

Posted on 2011-04-22
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Last Modified: 2012-05-11
Hi Everyone,

I'm having real problems posting data to a WCF service. I would be very grateful if anybody could help me diagnose the error I'm receiving below.

The remote server returned an error: (415) Cannot process the message because the content type 'application/x-www-form-urlencoded' was not the expected type 'text/xml; charset=utf-8'..

I'm sending data to the service via a simple HTTP post as content type = "application/x-www-form-urlencoded".

My WCF interface and config is pasted below.
[ServiceContract]
public interface ITextService
{
[WebInvoke(UriTemplate = "invoke", Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest)]
[OperationContract]
string PostData(Stream input);
}


[OperationBehavior]
public string PostData(Stream input)
{......



<?xml version="1.0"?>
<configuration>
<system.web>
<webServices>
<protocols>
<add name="HttpPost" />
</protocols>
</webServices>
<compilation debug="true"/>
<customErrors mode="Off">

</customErrors>
</system.web>
<!-- When deploying the service library project, the content of the config file must be added to the host's 
app.config file. System.Configuration does not support config files for libraries. -->
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="WebConfiguration"
maxBufferSize="65536"
maxReceivedMessageSize="2000000000"
transferMode="Streamed">
</binding>
</webHttpBinding>
<basicHttpBinding>
<binding name="StreamedHttp" transferMode="Streamed" maxBufferSize="2147483647" MaxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647">
<readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
</binding>
</basicHttpBinding>
</bindings>
<services>
<service name="SimFreeGateway.TextService" behaviorConfiguration="SimFreeGatewayBehavior">
<endpoint address="" binding="basicHttpBinding" contract="SimFreeGateway.ITextService" bindingConfiguration="StreamedHttp" bindingNamespace="xxx" />
<endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex"/>
</service>
</services>
<behaviors>
<endpointBehaviors>
<behavior name="WebBehavior">
<webHttp />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="WebBehavior">
<serviceDebug httpHelpPageEnabled="false" httpsHelpPageEnabled="false" />
<serviceMetadata />
</behavior>
<behavior name="SimFreeGatewayBehavior">
<serviceDebug includeExceptionDetailInFaults="true"/>
<serviceMetadata httpGetEnabled="true" />
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
</configuration>

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Question by:nkewney
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4 Comments
 
LVL 17

Expert Comment

by:Carlos Villegas
ID: 35447968
Hello, I think that you need to use a WebHttpBinding endpoint instead of BasicHttpBinding, I did that some time agon, more info:

The Web Programming Model allows developers to expose Web services through HTTP requests that use "plain old XML" (POX) style messaging instead of SOAP-based messaging. For clients to communicate with a service using HTTP requests, an endpoint of the service must be configured with the WebHttpBinding that has the WebHttpBehavior attached to it. The WCF Web Programming Model also requires that the individual service operations are annotated with the WebGetAttribute or WebInvokeAttribute attributes. This defines a mapping from a URI and HTTP method to the service operation, as well as the format of the messages used to call the operation and return the results. Support in for syndication and ASP.AJAX integration are both built on top of the WCF Web Programming Model.
Source:
http://msdn.microsoft.com/en-us/library/system.servicemodel.webhttpbinding.aspx
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LVL 17

Accepted Solution

by:
Carlos Villegas earned 2000 total points
ID: 35448218
Try changing this line in your config:
<endpoint address="" binding="basicHttpBinding" contract="SimFreeGateway.ITextService" bindingConfiguration="StreamedHttp" bindingNamespace="xxx" />

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For this:
<endpoint address="" binding="webHttpBinding" contract="SimFreeGateway.ITextService" bindingConfiguration="WebConfiguration" bindingNamespace="xxx" />

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Author Closing Comment

by:nkewney
ID: 35504384
This solved my problem and was an oversight on my part.

Thanks for your help
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LVL 17

Expert Comment

by:Carlos Villegas
ID: 35504398
Good to know buddy
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