title: How do I propogate Windows Identity without using delegation in WCF?
body: <p>I need to propagate the Windows Identity of the current user across two service calls.</p>
  
  <p>Service A (which runs under integrated authentication) calls Service B (which also runs under integrated authentication). I need to identify the user identity which was used to call Service A in Service B's code.</p>
  
  <p>I know this is possible using delegation, by impersonating the User in Service A code and then call Service B from the impersonated code.</p>
  
  <p>However, I only want to flow the identity and not impersonate the user. Is this possible without impersonation?</p>