mirror of
https://github.com/Hopiu/linkchecker.git
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e9805dbd8a
git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@3887 e7d03fd6-7b0d-0410-9947-9c21f3af8025
52 lines
2 KiB
Python
52 lines
2 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2008-2009 Bastian Kleineidam
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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import socket
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# test for IPv6, both in Python build and in kernel build
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has_ipv6 = False
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if socket.has_ipv6:
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# python has ipv6 compiled in, but the operating system also
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# has to support it.
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try:
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socket.socket(socket.AF_INET6, socket.SOCK_STREAM).close()
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has_ipv6 = True
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except socket.error, msg:
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# only catch these one:
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# socket.error: (97, 'Address family not supported by protocol')
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# socket.error: (10047, 'Address family not supported by protocol')
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if msg[0] not in (97, 10047):
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raise
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def create_socket (family, socktype, proto=0, timeout=60):
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"""
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Create a socket with given family and type. If SSL context
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is given an SSL socket is created.
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"""
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sock = socket.socket(family, socktype, proto=proto)
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sock.settimeout(timeout)
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socktypes_inet = [socket.AF_INET]
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if has_ipv6:
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socktypes_inet.append(socket.AF_INET6)
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if family in socktypes_inet and socktype == socket.SOCK_STREAM:
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# disable NAGLE algorithm, which means sending pending data
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# immediately, possibly wasting bandwidth but improving
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# responsiveness for fast networks
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
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return sock
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