[Webkit-unassigned] [Bug 12307] New: No way to test error condition of async XMLHttpRequest to file:///

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=12307

           Summary: No way to test error condition of async XMLHttpRequest
                    to file:///
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: XML
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jcostell at tibco.com


There is no way to tell whether an asynchronous XML HTTP request to the local
disk (when running a page from file:///) has failed. 

// #1 works ok from HTTP
var r = new XMLHttpRequest();
r.open("GET", "http://www.apple.com/nowhere.html", true);
r.send();
// wait ...
r.status == 404

// #2 works ok synchronously
var r = new XMLHttpRequest();
r.open("GET", "nowhere.html", false);
r.send(); // throws an error 

// #3 but asynchronously ... no way to detect the error
var r = new XMLHttpRequest();
r.open("GET", "nowhere.html", true);
r.send();
// wait ... no error thrown
r.status == 0


Both Internet Explorer and Firefox seem to ignore async when requesting a
resource from the local disk. They both throw an exception like Safari does in
the second example. But they also both throw an exception in the third example
whereas Safari doesn't.


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