time server in ruby

timeserver.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'eventmachine'
require 'time'

module TimeServer
  def post_init
    send_data "#{Time.now.strftime('%A, %B %e, %Y %H:%M:%S')}\n"
    close_connection
  end
end

unless ARGV.length == 1
  puts "#{$0} <port>"
  exit 1
end

port = ARGV.shift.to_i

EM::run do
  EM::start_server '0.0.0.0', port, TimeServer
end