Regarding `cf-priority` response header outside workers (as per "Better HTTP/2 Prioritization for a Faster Web" article)

I’ve just read the “Better HTTP/2 Prioritization for a Faster Web” article:

And the HTTP/2 response header cf-priority is mentioned as available from workers. My question is if this header is also available for “normal” proxy-ed traffic as set by a “normal” HTTP server.

(As for example the Link header is used to implement server-side push.)

Any feedback on this?

I’ve just experimented with this feature (without workers) and it doesn’t seem to actually work… (Perhaps web-workers is indeed a “requirement”…)

Moreover, how can I test that even the “default” actually works, because in my experiments it doesn’t seem to work correctly, as the images are sent before any CSS…

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