diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/http/request.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/http/request.rb | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb index dee7be184a..5c172aecad 100644 --- a/actionpack/lib/action_dispatch/http/request.rb +++ b/actionpack/lib/action_dispatch/http/request.rb @@ -199,6 +199,23 @@ module ActionDispatch @headers ||= Http::Headers.new(self) end + # 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 an 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. + def send_early_hints(links) + return unless env["rack.early_hints"] + + env["rack.early_hints"].call(links) + end + # Returns a +String+ with the last requested path including their params. # # # get '/foo' |