[Webkit-unassigned] [Bug 54162] XHR inconsistent in handling access to response attributes after an error

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Feb 14 15:03:45 PST 2011


Alexey Proskuryakov <ap at webkit.org> changed:

           What    |Removed                     |Added
  Attachment #81933|review?                     |review-
               Flag|                            |

--- Comment #6 from Alexey Proskuryakov <ap at webkit.org>  2011-02-14 15:03:45 PST ---
(From update of attachment 81933)
I'm almost convinced. However, a quick web search shows that people do care about status and statusText after abort() for various reasons, see e.g. <http://groups.google.com/group/jquery-dev/browse_thread/thread/3d8f7ac78c9b0117>. Reuse of XHR object seems to be a common theme in posts I found.

Also, when we changed abort() to reset status a few years ago, someone quickly filed a bug. One of the tests you modified (status-after-abort.html) was there specifically to make sure that we don't break this again! Please use svn log to check history of tests like this.

I guess that I should also mention Dashboard widgets, which are only tested with WebKit. But there isn't much we can do about those now, except for adding quirks if problems are found.

-        return jsUndefined();
+        return jsNull();

These unrelated changes should be in a separate patch.

-    return String();
+    // Return empty string, not a null String()
+    return "";

This, too. Might be best to do smaller changes like that first.

> status and statusText will never throw an exception, so they are not tested for an expected exception.

Please modify XMLHttpRequest.idl to not require exception handling for methods that can never raise an exception.

I'm not sure why you check m_error in functions like returnXML and returnBlob. Aren't these supposed to be empty already? It's good to match algorithms from spec for clarity, but not when that's confusingly redundant with other code that we have. An ASSERT would be the best way to document that we respect the spec here.

r- for the necessary IDL modification. I've e-mailed the person who filed a bug about status after abort(), so I may have more information later.

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