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[Bug 7918] prefetching: allow site to deny

From: <bugzilla@jessica.w3.org>
Date: Wed, 28 Apr 2010 22:23:17 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1O7Ff3-00016i-Qb@jessica.w3.org>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=7918





--- Comment #10 from Maciej Stachowiak <mjs@apple.com>  2010-04-28 22:23:57 ---
(In reply to comment #9)
> For what it's worth, in Firefox prefetch implementation we add the http header:
> 
> X-Moz: prefetch
> 
> to all prefetch requests. This allows sites to block any and all prefetch
> requests. It can simply close the TCP connection upon detecting this header.
> 
> One downside with your approach is that it causes even more requests to go to
> servers, since you have to first request the use.txt file. It also slows down
> performance since the two requests have to be made one after another.
> 
> The header approach does not suffer these problems.

This header sounds like a good approach, though of course ideally we would want
one with a name other than "X-Moz".

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Received on Wednesday, 28 April 2010 22:24:01 GMT

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