Discover steam servers on LAN

steam-servers.rb

#!/usr/bin/ruby

require 'socket'

def print_status(data,from)
    data = data[data.index("\\",4)+1...data.length].split("\\")
    i=0
    a = Hash.new()
    while i < data.length-1
        a.store(data[i] , data[i+1])
        i=i+1
    end
    printf "%s\t%s\t%s\t%s\t%d/%d\t%d\n",a['hostname'],from,a['description'],a['map'],a['players'],a['max'],a['password']
end

begin
    payload = "\xff\xff\xff\xffinfostring\x00"
    sock = UDPSocket.new()
    sock.setsockopt(Socket::SOL_SOCKET,Socket::SO_BROADCAST, true)
    sock.send(payload,0,"255.255.255.255",27015)
    while true
	reply,from = sock.recvfrom(1024,0)
        print_status(reply,from[3])
    end
rescue Interrupt
    exit(1)
end