Eventmachine.rb

#!/usr/bin/env ruby
['rubygems', 'eventmachine'].map{|x| require x}
module SelfServer; def receive_data(data); send_data(IO.readlines __FILE__); end; end;
EventMachine::run do
  host = ARGV[1] || '0.0.0.0' 
  port = ARGV[2] || 8080
  EventMachine::start_server host, port, SelfServer                    
  puts "If you don't like defaults try chaging host or port"
  puts "Open 2 terminal and try telnet #{host} #{port} and press enter"
end