Method: ActionDispatch::Request#send_early_hints

Defined in:
lib/action_dispatch/http/request.rb

#send_early_hints(links) ⇒ Object

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,</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.



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# File 'lib/action_dispatch/http/request.rb', line 254

def send_early_hints(links)
  env["rack.early_hints"]&.call(links)
end