rack-pot.rb

require 'rack'
 
module Rack
 
  class Pot
    
    CONTENT_TYPE = "application/coffee-pot-command".freeze
 
    def initialize(app)
      @app = app
    end
 
    def call(env)
      if env["CONTENT_TYPE"] == CONTENT_TYPE
        ["418 I'm a teapot", {"Content-Type" => CONTENT_TYPE, "Content-Length" => "0"}, []]
      else
        @app.call(env)
      end
    end
 
  end
  
end