rack.git  about / heads / tags
a modular Ruby webserver interface
blob c1c430f653e603320fcc2f691af18bfa7b326811 524 bytes (raw)
$ git show chunk:lib/rack/head.rb	# shows this blob on the CLI

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# frozen_string_literal: true

require_relative 'constants'
require_relative 'body_proxy'

module Rack
  # Rack::Head returns an empty body for all HEAD requests. It leaves
  # all other requests unchanged.
  class Head
    def initialize(app)
      @app = app
    end

    def call(env)
      _, _, body = response = @app.call(env)

      if env[REQUEST_METHOD] == HEAD
        response[2] = Rack::BodyProxy.new([]) do
          body.close if body.respond_to? :close
        end
      end

      response
    end
  end
end

git clone https://yhbt.net/rack.git