[Webkit-unassigned] [Bug 57842] New: Add support for link rel type "subresource"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=57842

           Summary: Add support for link rel type "subresource"
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gavinp at chromium.org


Link rel=prefetch is great for cache warming for resources on subsequent pages, but it launches requests at too low a priority to use for subresources of the current page.

Particularly after https://bugs.webkit.org/show_bug.cgi?id=51940 is implemented, a rel type that launches requests at an higher priority is going to be very useful.  This rel type is in the HTML5 spec at http://wiki.whatwg.org/wiki/RelExtensions .  An expected use case will be for servers to provide subresource hints in link headers, which will allow servers to help make the web faster.

 This feature continues my implementation of the Link header, which we've talked about in WebKit-dev in https://lists.webkit.org/pipermail/webkit-dev/2011-February/016034.html.

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