yslow beacon

gistfile1.rb

require 'rubygems'
require 'selenium-webdriver'
require 'rack'
require 'thin'
require 'socket'
require 'pp'

Thread.abort_on_exception = true

class Server

  attr_reader :data

  def initialize
    @data = []
  end

  def call(env)
    @data << JSON.parse(env['rack.input'].read)
    [200, {}, []]
  end

  def run!
    @thread = Thread.new {  Rack::Handler::Thin.run(self, :Port => port) }
    sleep 0.5 until listening?
  end

  def port
    3580
  end

  def url
    "http://localhost:#{port}/"
  end

  def listening?
    TCPSocket.new("localhost", port).close
    true
  rescue
    false
  end

  def join
    @thread.join if @thread
  end
end

server = Server.new
server.run!

profile = Selenium::WebDriver::Firefox::Profile.new
# need selenium-webdriver >= 0.0.25 for this
profile.add_extension "firebug-1.5.4-fx.xpi"
profile.add_extension "yslow-2.0.7-fx.xpi"

# http://developer.yahoo.com/yslow/help/beacons.html#yslow_beacon
profile["extensions.yslow.autorun"]              = true
profile["extensions.yslow.optinBeacon"]          = true
profile["extensions.yslow.beaconUrl"]            = server.url
profile["extensions.yslow.beaconInfo"]           = 'all'
profile["extensions.firebug.allPagesActivation"] = 'on'

browser = Selenium::WebDriver.for :firefox, :profile => profile
browser.get "http://google.com"
browser.close

pp server.data