| CONSOLE MESSAGE: line 35: XMLHttpRequest cannot load http://localhost:8000/xmlhttprequest/xmlhttprequest-sync-vs-async-assertion-failure.html. Origin http://127.0.0.1:8000 is not allowed by Access-Control-Allow-Origin. |
| bug 40996: Progress event should not be fired during synchronous XMLHttpRequest; |
| bug 17502: Assertion failure when trying to restart a sync XMLHttpRequest as an async one from onreadystatechange. |
| Step 1: Same origin request |
| Step 2: Cross origin request, disallowed |
| NetworkError: A network error occurred. |
| Step 3: Cross origin request, allowed |
| Step 4: Cross origin request, check that preflight isn't attempted |
