title: Accessing original URL in IIS7 404 redirect page
body: <p>I have an .aspx page as my custom 404 page on a site set up on IIS 7.  I need to retrieve the original URL that the user was trying to access in order to do some processing on the 404 page.  The trick is that I need to specifically handle 404's that do not contain a .aspx extension (e.g <code>http://example.com/testurl</code>), which do not get routed through ASP.NET's custom errors section.  I can configure IIS to point to my custom 404, but at that point I do not know how to get my original URL?  Does anyone know if this is possible?</p>
  
  <p>Thanks,</p>
  
  <p>Mike</p>