Ruby/Network/UDP Server

require "socket"
host = "localhost"
port = 1234
s = UDPSocket.new
s.bind(nil, port)
s.send("1", 0, host, port)
5.times do
  text, sender = s.recvfrom(16)
  remote_host = sender[3]
  puts "#{remote_host} sent #{text}"
  response = (text.to_i * 2).to_s
  puts "We will respond with #{response}"
  s.send(response, 0, host, port)
end

require "socket"
s = UDPSocket.new
s.bind(nil, 1234)
5.times do
  text, sender = s.recvfrom(16)
  puts text
end