Ajax GET of XML from local cache gives false error

[jwalton@…]

Environment is Windows Safari 5.0.4 on Windows 7 (64bit O/S). This uses webkit browser engine (AppleWebKit/533.20.25).

I have an HTML5 application that uses the HTML5 local cache feature.

If I use Ajax GET to fetch XML files that has been cached, it returns false error (code: 0, message "error").

Problem seems to be due to raw GET returning a "status" of 0, which is not tested for within the jQuery code. My workaround (not a solution!) is to change line 6542 from

if ( status >= 200 && status < 300 || status === 304 ) {

to:

if ( status >= 200 && status < 300 || status === 304 || status === 0) {

John Walton

[addyosmani]

Thanks for submitting a ticket to the jQuery Bug Tracker. In order to assist you further, could you please also submit a reduced test case on  http://jsFiddle.net that reproduces the issue you are experiencing?

Please also try testing using jQuery-GIT to see if the issue submitted persists.

[jaubourg]

@jwalton:

you're right when you state your workaround is not a solution and so far, we've found none :(

Files cached into the HTML5 local cache always issue a 0 status code just like a network error. While it is sometimes possible to somehow circumvent this behaviour when it comes to local file systems (since we have a specific protocol to deal with and can use this info to take specific actions), we found no general yet non-breaking solution for the HTML5 local cache.

If someone finds a solution that won't make it impossible to detect errors for spec-compliant requests (ie. returning a meaningful status code and 0 in case of a network error) then we'll be happy to review it.

All I can suggest is that you open a bug report against Safari/Webkit (if none exists already).