gistfile1.py

import socket

HOST = ''                 # Symbolic name meaning all available interfaces
PORT = 50008     # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
old_port = 1
while 1:
    conn, addr = s.accept()
    print 'Connected by', addr
    new_port = addr[1]
    difference = new_port - old_port
    print "port change of: " + str(difference)
    data = conn.recv(1024)
    if data:
      print data 
    conn.close()
    old_port = new_port