Authentication in ASP.NET HttpHandler
<p>I have created a HttpHandler to be used with SWFUpload to upload images to the server.  This upload is done in an administration backend so users need to be authenticated to upload images.</p>

<p>Initially I made the whole administration area deny annonymous users but because of the way SWFUpload appears to work it wouldn't work correctly with Forms authentication and would return a 302 status code.</p>

<p>I had thought it would be possible to make the location of my handler public in Web.config and use context.User.Identity.IsAuthenticated in my handler to determine if the user is logged in.</p>

<p><strong>My problem</strong>: is that <code>context.User.Identity.IsAuthenticated</code> always seems false in the handler after I have logged in.  Does anyone have any thoughts on why this might be?</p>
