[webkit-dev] beforeload & link (esp rel prefetch)

Alexey Proskuryakov ap at webkit.org
Thu Jan 13 09:02:15 PST 2011

12.01.2011, в 22:42, Darin Fisher написал(а):

> Supporting the Link header enables web servers to inject <link> tags without modifying the document, which can be useful, especially for intermediaries.

I'm wondering what the use cases are. To me, adding a way for metadata to change document behavior sounds like a misfeature - it adds significant complexity to the system, while taking away existing functionality. As a specific example discussed in this thread, we'd break some browser extensions like Incognito if resource loading could bypass onbeforeload. As another example, we'd break <base> element.

Historically, attempts to use HTTP metadata with HTML caused significant trouble - user agents don't even agree on Content-Type handling, and more complicated features like Vary pretty much don't work at all. Is there a reason to believe that fetching resources via Link will be anything more than a source of incompatibilities and security bugs?

- WBR, Alexey Proskuryakov

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