"""Simple utility for building a list of local IPs using the socket module. This module defines two constants: LOCALHOST : The loopback interface, or the first interface that points to this machine. It will *almost* always be '127.0.0.1' LOCAL_IPS : A list of IP addresses, loopback first, that point to this machine. """ #----------------------------------------------------------------------------- # Copyright (C) 2010-2011 The IPython Development Team # # Distributed under the terms of the BSD License. The full license is in # the file COPYING, distributed as part of this software. #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Imports #----------------------------------------------------------------------------- import socket #----------------------------------------------------------------------------- # Code #----------------------------------------------------------------------------- LOCAL_IPS = [] try: LOCAL_IPS = socket.gethostbyname_ex('localhost')[2] except socket.gaierror: pass try: LOCAL_IPS.extend(socket.gethostbyname_ex(socket.gethostname())[2]) except socket.gaierror: pass # include all-interface aliases: 0.0.0.0 and '' LOCAL_IPS.extend(['0.0.0.0', '']) LOCALHOST = LOCAL_IPS[0]