eventmachine policy file server for flash

gistfile1.rb

equire 'rubygems'
require 'eventmachine'

module Socky
  module Policy
    DEBUG    = true
    HOST     = 'localhost'
    PORT     = 843
    EOF      = "\r\000"
    REQUEST  = "<policy-file-request/>\000"
    DOCUMENT = File.read(FIle.join(File.dirname(__FILE__),'policy.xml'))

    module Server
      def packet?(data)
        req_size = REQUEST.size
        return false if data.size < req_size
        if data[0...req_size] == REQUEST
          send_data(DOCUMENT)
          return req_size
        else
          STDERR.puts( "\n[ Malformed request: #{ data } ]" ) if DEBUG
        end
      end

      def receive_data(data)
        (@saved_data ||= "") << data
        while true
          case i = packet?(saved_data)
          when false, 0; return
          when true; @saved_data = ""
          when Numeric; @saved_data.slice!(0...i)
          end
        end
      end
    end

  end
end

if __FILE__ == $0
  EventMachine::run do
    EventMachine::start_server( Socky::Policy::HOST,
                                Socky::Policy::PORT,
                                Socky::Policy::Server )
  end
end