fserv.rb

require 'rubygems'
require 'eventmachine'

module EchoServer
  def post_init
    puts "-- CONNECTION ESTABLISHED"
  end

  def receive_data data
    send_data "-- DATA RECEIVED"

    filename = data.split('>')[0]
    filedata = data.split('>')[1]
    
    puts "-- INCOMING DATA"
    puts "-- FILENAME: #{filename}"
    puts "-- DATA:\n\n #{filedata}"
    puts "\n-- END DATA"
  end

  def unbind
    puts "-- CONNECTION TERMINATED"
  end
end

EventMachine::run {
  EventMachine::start_server 'YOUR_SERVER_HERE', 7799, EchoServer
}