title: access HttpContext.Current from WCF Web Service
body: <p>I just started using WCF Services with ASP.NET AJAX.  I instantiate my WCF service from Javascript and then pass string variables as arguments to my WCF Service method (with an OperationContract signature).  I then return a .NET object (defined with a DataContract) which is bound to my custom Javascript class.  I'm having trouble authenticating based on the user logged into my web session.  However, the WCF web service is a completely different service with no context to the HttpContext.Current object.  What is the most secure way to get access to that object?  </p>