xplane-udp.rb

require 'pp'

require 'rubygems'
require 'eventmachine'

module XplaneServer

  def post_init
  end

  def data_struct
    "l f8"
  end
  
  def pack_str
    "a4 C #{data_struct} a*" # message internal-index data-index 8-floats other
  end
  
  def receive_data data
    # unpacks the first element. further unpack(data_struct) calls will grab each additional
    p data.unpack(pack_str) #.last.unpack("l f8")
  end
  
end

EM.run {
  
  EM.open_datagram_socket('127.0.0.1', 48000,XplaneServer)
  
}