EarlyHintsHeader

An early hints Ruby / Rack middleware which just sets Link headers.

This means you can use early hints without having to use the HTTP 103 status code, i.e. nginx's http2_push_preload.

Add this line to your application's Gemfile:

gem 'early_hints_header'
gem 'fast_woothee' # optional: for blocking broken client like iOS

And then execute:

$ bundle install

Or install it yourself as:

$ gem install early_hints_header

# In config.ru

require "early_hints_header/middleware"

use EarlyHintsHeader::Middleware

When using HTTP2 push, be aware of potential clients that do not properly support preloading. For example, certain older Safari versions do not work properly. This gem will handle that if you have fast_woothee installed.

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/ianks/early_hints_header. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the EarlyHintsHeader project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.