em-synchrony stupid udp server

stupid-udp-server.rb

require "em-synchrony"
require "em-synchrony/em-http"

class EchoUdpServer < EventMachine::Connection
  def post_init
    @f = Fiber.current
  end

  def receive_data(data)
    @f.resume(data)
  end
end

EM.synchrony do
  EventMachine::open_datagram_socket("127.0.0.1", 7878, EchoUdpServer) 
  puts "UDP server listening on port 7878..."

  while true
    data = Fiber.yield
    if data == "quit"
      puts "quitting"
      EventMachine.stop
      exit
    end

    url = "http://#{data}"
    puts "getting: #{url}"
    resp = EventMachine::HttpRequest.new(url).get
    if resp.response_header.status == 200
      puts "#{data} is up and running!"
    else
      puts "#{data} is down!"
    end
  end
end