echo-em.rb

require "rubygems"
require "eventmachine"

module EchoServer
  def post_init
    puts "-- someone connected to the EventMachine echo server!"
  end

  def receive_data data
    send_data ">>>you sent: " + data
  end
end

EventMachine::run do
  EventMachine::start_server "0.0.0.0", 8081, EchoServer
  puts "Running EventMachine echo server on 8081"
end