title: Empty HttpContext when calling WCF webservice
body: <p>I recently wrote a webservice to be used with Silverlight which uses the ASP.net membership and roles.</p>
  
  <p>To validate the client in the service I look at the HTTPContext.Current.User (Which works when the service is called from Silverlight)</p>
  
  <p>However, I've been trying to call the same service from an asp.net postback. But when I step-thru to the service the HTTPContext.Current has an emplty string for the username.</p>
  
  <p>I'm guessing there is something that I'm not doing in the web.config file which is causing the httpContext to not be sent through the proxy to my service?</p>
  
  <p>Any ideas would be appreciated. I need to be able to validate the client somehow using asp.net membership and roles and have it work from both an asp.net client and a silverlight client.</p>