title: CORS Options Preflight Hanging
body: <p>I have a ASP Web API project that is being hosted over SSL.  I have another ASP MVC project that makes use of the API.  While debugging, I am seeing behavior where the OPTIONS requests are hanging often (but not always) and preventing the other calls from proceeding.</p>
  
  <p>In the Chrome debugger, these are just shown as 'Pending'.  If launch Fiddler, everything works fine.  I see no errors at all, things just hang.  This fails before it hits the authorization code, so I can't even set any breakpoints.</p>
  
  <p>Could this be a certificate problem?  Firewall?</p>