#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2010 Doug Hellmann.  All rights reserved.
     #
     """Get address info for a service
     """
     #end_pymotw_header
     
     import socket
     
     def get_constants(prefix):
         """Create a dictionary mapping socket module constants to their names."""
         return dict( (getattr(socket, n), n)
                      for n in dir(socket)
                      if n.startswith(prefix)
                      )
     
     families = get_constants('AF_')
     types = get_constants('SOCK_')
     protocols = get_constants('IPPROTO_')
     
     for response in socket.getaddrinfo('www.python.org', 'http'):
     
         # Unpack the response tuple
         family, socktype, proto, canonname, sockaddr = response
     
         print 'Family        :', families[family]
         print 'Type          :', types[socktype]
         print 'Protocol      :', protocols[proto]
         print 'Canonical name:', canonname
         print 'Socket address:', sockaddr
         print