Send STDIN to Quartz Composer via UDP Multicast in Ruby only with standard components

multicast_qc.rb

require 'socket'

while str = STDIN.gets
  UDPSocket.new.send(
    ([str.encode('UTF-16LE').chars.map{|i| i.unpack("H*").first.reverse.rjust(8, "0")}.flatten.join].pack('h*')),
    0,
    "225.0.0.0", 50000 # hostname (UDP Multicast), port
  )
  STDERR.puts "sent: #{str}"
end