method
send_early_hints
v7.1.3.4 -
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Class: ActionDispatch::Request
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send_early_hints(links)
public
Early Hints is an HTTP/2 status code that indicates hints to help a client start making preparations for processing the final response.
If the env contains rack.early_hints then the server accepts HTTP2 push for Link headers.
The send_early_hints method accepts a hash of links as follows:
send_early_hints("Link" => "</style.css>; rel=preload; as=style\n</script.js>; rel=preload")
If you are using javascript_include_tag or stylesheet_link_tag the Early Hints headers are included by default if supported.