xhr offline: bug due to _isDocumentOk() change

[piopier]

I was working with Dojo 1.4 . When calling d.xhr() offline, xhr() was executing the error handler, which is a good detection of this problem. In Dojo 1.6, xhr() called offline is executing the load handler !!

It seems that this is due to a change in d._isDocumentOk() : when the ioargs.status.code is 0, _isDocumentOk() returns true...

You can see a test case in the reference guide, example 7 after checking "File-->Work offline" in firefox

[Adam Peller]

hrm... r22544 was to support appcache. How would we differentiate between a successful appcache hit and a failure working "offline"?

[jakefost]

This bug also affects CORS calls in FF. If a CORS preflight fails, the status is 0 but isDocumentOk returns true. In 1.5 the following code correctly logs “error called” but in 1.6 it logs “load called”.

dojo.xhrGet({url:"http://google.com", load:function() { console.log("load called");}, error:function() {console.log("error called");}});

[Adam Peller]

(In [24489]) Rollback r22544 check for http response status 0. Refs #12516, #11230

[Adam Peller]

(In [24490]) Rollback r22544 check for http response status 0 on 1.6 branch.