xhr.upload.onprogress not fired on Android 4.0.4 Stock Browser

[feltnerm]

The stock Android 4.0.4 browser does not appear to fully follow the spec for XMLHttpRequest objects. Specifically, the XHR object does not fire ProgressEvents as it should [1]. This does not appear to affect Chrome on Android.

This means no progress updates or progress-bar during currently occurring uploads, and that onProgress will not fire until the end of the upload.

Inspired via a StackOverflow question [2].

1 - https://code.google.com/p/android/issues/detail?id=46958&q=onprogress&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars#makechanges
2 - http://stackoverflow.com/questions/17901630/fineuploader-onprogress-callback-does-not-work-for-android?noredirect=1#17901630

[rnicholus]

This should be moved to the docs site

[rnicholus]

This seems pretty old. Closing, but will re-open if recent versions of Android still have this issue.