983882 - Give feedback in the console about appcache status

Status: RESOLVED WONTFIX

(DevTools :: Console, defect)

Description

[Christopher Van Wiemeersch [:cvan]]

1. Load Chrome
2. With a clear appcache, load http://developers.whatwg.org/
3. Inspect the console:

Creating Application Cache with manifest http://developers.whatwg.org/offline.manifest developers.whatwg.org/:1
Application Cache Checking event developers.whatwg.org/:1
Application Cache Downloading event developers.whatwg.org/:1
Application Cache Progress event (0 of 70) http://developers.whatwg.org/browsers.html developers.whatwg.org/:1
Application Cache Progress event (1 of 70) http://developers.whatwg.org/tabular-data.html developers.whatwg.org/:1
Failed to load resource: the server responded with a status of 404 (Not Found) http://developers.whatwg.org/link-fixup.js
Application Cache Progress event (2 of 70) http://developers.whatwg.org/the-map-element.html developers.whatwg.org/:1
...
Application Cache Progress event (70 of 70)  developers.whatwg.org/:1
Application Cache Cached event

3. Refresh the page
4. Inspect the console:

Document was loaded from Application Cache with manifest http://developers.whatwg.org/offline.manifest developers.whatwg.org/:1
Application Cache Checking event developers.whatwg.org/:1
Application Cache NoUpdate event (index):1


The Firefox Developer Tools console should provide similar feedback.

Comment 1

[Brian Grinstead [:bgrins]]

With Service Worker debugging in progress and app cache being deprecated (https://html.spec.whatwg.org/multipage/browsers.html#offline) we aren't going to add additional app cache logging.

If someone did want to do it, they could instrument the platform with calls to ReportToConsole for the relevant progress events: https://dxr.mozilla.org/mozilla-central/rev/be593a64d7c6a826260514fe758ef32a6ee580f7/dom/base/nsContentUtils.cpp#3438