main frame - didStartProvisionalLoadForFrame
main frame - didCommitLoadForFrame
main frame - didFinishDocumentLoadForFrame
main frame - didHandleOnloadEventsForFrame
main frame - didFinishLoadForFrame
CONSOLE MESSAGE: XMLHttpRequest cannot load http://localhost:8000/loading/resources/foo.txt. Origin http://127.0.0.1:8000 is not allowed by Access-Control-Allow-Origin.
The console message above should report failure to load foo.txt due to cross-origin access, not a network error.