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