[Webkit-unassigned] [Bug 152598] Feature request: a callback when request is blocked by the Content Blocker

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=152598

--- Comment #11 from Andrey Meshkov <am at adguard.com> ---
> One of the design goals of content blockers is that they are not able to observe the user's browsing. A callback that specifically reported what was blocked would defeat that purpose.

This makes sense, thank you!

> Maybe there's higher-level statics we could give without creating that problem.

Something like this would be nice to have:
`count(*) GROUP BY action`

Ideally, I'd like to have the rules categorized (ads, tracking, social widgets, etc) so that we could get `GROUP BY category, action`

> It's also possible that this could be provided for content blockers that are also app extensions, as app extensions already potentially have the ability to observe browsing.

That'd be great!

One of the purposes that I have in mind is providing filter lists' maintainers with a convenient way to debug content blocking rules (console log is not enough for this), and they usually use the desktop AdGuard for Safari to do this as it's simply much easier than using an iOS device.

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