[Webkit-unassigned] [Bug 182924] Potential privacy issue: DNS prefetching can be re-enabled

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Feb 21 13:33:56 PST 2018


--- Comment #7 from Milan Crha <mcrha at redhat.com> ---
(In reply to Chris Dumez from comment #6)
> I'd rather we return early in this method if
> !settings().dnsPrefetchingEnabled(). Otherwise, we end up changing the value
> of m_haveExplicitlyDisabledDNSPrefetch.

I've been thinking of it too, but:
a) I wanted ensure that the prefetch will be disabled
b) that variable is used basically only here (and in initDNSPrefetch(), where
   it's set to 'false' again) and after this change is means "explicitly
   disabled by settings" here, from my point of view.

I added some debug prints around and the initDNSPrefetch() is called plenty of times after each page reload (or load of a new page in case of Evolution), thus the value is reset often.

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