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Editorial Team
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Asked: 2026-05-22T16:17:44+00:00

I am working on a Silverlight 4 application which connects to a claim ware

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I am working on a Silverlight 4 application which connects to a claim ware WCF Service. I am using the following code to retrive the claim token in my WCF to perform authorization. 

IClaimsPrincipal principal = ( IClaimsPrincipal )Thread.CurrentPrincipal;   
IClaimsIdentity identity = ( IClaimsIdentity )principal.Identity;
return string.Format( "You entered: {0} and you are {1}", value, identity.Name );

When I use wsHttpBinding in WCF and try it out with a console app, it works fine. But since Silverlight only supports basicHttp and customeBinding, i cannot use wsHttp, ws2007Http or anyother binding. Becase of which I am not getting the IClaimIdentity token in my WCF from Silverlight.

Is there any way I can use any of the Silverlight suppported binding and still get the ClaimIdentity in my WCF. Is there any tutorial/help text where I can read more abouth this.

My WCF settings are:

<system.serviceModel>
    <services>
      <service name="ClainAwareWCF.Service" behaviorConfiguration="ClainAwareWCF.ServiceBehavior">
        <endpoint address="" binding="basicHttpBinding" contract="ClainAwareWCF.IService" bindingConfiguration="basicbind">
          <identity>
            <dns value="localhost"/>
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <bindings>
      <basicHttpBinding>
        <binding name="basicbind">
          <security mode="TransportCredentialOnly"></security>
        </binding>
      </basicHttpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ClainAwareWCF.ServiceBehavior" > 
          <federatedServiceHostConfiguration/>
          <serviceMetadata  httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <extensions>      
      <behaviorExtensions>
        <add name="federatedServiceHostConfiguration" type="Microsoft.IdentityModel.Configuration.ConfigureServiceHostBehaviorExtensionElement, Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
      </behaviorExtensions>
    </extensions>
  </system.serviceModel>
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1 Answer

  1. Editorial Team

    Trying to call this directly from the client will never happen because of the binding issues and also because the client auth awareness security of SL (Windows/Forms/WIF/etc.), but one approach is to use RIA Services Domain Authentication Services to authenticate and call the services from the server-side through a WCF RIA Invoke endpoint. The user’s security context is proxied to the client and you can tunnel data over the wire in a straight-forward manner.

    This may get you in the right direction:

    http://archive.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=5617

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