How to handle timeouts decently with em-http-request 0.3.0

time-em-http-request.rb

require 'eventmachine'
require 'em-http'

EM::run do
  
  rq = EM::HttpRequest.new("http://www.slow.com").get
  
  def rq.timed_out?
    @timed_out
  end
  
  timeout = EM::Timer.new(1) do
    rq.instance_variable_set :@timed_out, true
    rq.unbind
  end
  
  rq.callback do |*args|
    timeout.cancel
    puts "callback #{args.inspect}"
  end

  rq.errback do |*args|
    timeout.cancel
    if rq.timed_out?
      puts "timeout in errback"
    else
      puts "errback #{args.inspect}"
    end
  end

end