[whatwg] Cache manifests and cross-origin resources

Michael Nordman michaeln at google.com
Fri Aug 27 13:15:17 PDT 2010

On Fri, Aug 27, 2010 at 11:21 AM, Ian Hickson <ian at hixie.ch> wrote:

> On Fri, 27 Aug 2010, Anne van Kesteren wrote:
> >
> > With the current model makingyourinterwebsboring.com can define a cache
> > manifest and basically point to a lot of external news sites. When any
> > of those sites is then fetched directly they would be taken from the
> > cache. That does not seem optimal.
> They'd only be fetched from the cache if they had a manifest="" attribute
> pointing to the same manifest.

... and since they're from a different origin than the manifest url, that
can't happen.

Resources from an origin different than the manifest's origin will be
cached, but they will never be used to satisfy a a frame navigation. They're
only eligible to be loaded as subresources into pages/workers that are
associated with the cache containing those resources.

> --
> Ian Hickson               U+1047E                )\._.,--....,'``.    fL
> http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
> Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
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