80 lines
2.3 KiB
Python
80 lines
2.3 KiB
Python
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"""Platform compatibility."""
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import platform
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import re
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import sys
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# Jython does not have this attribute
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import typing
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try:
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from socket import SOL_TCP
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except ImportError: # pragma: no cover
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from socket import IPPROTO_TCP as SOL_TCP # noqa
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RE_NUM = re.compile(r'(\d+).+')
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def _linux_version_to_tuple(s: str) -> typing.Tuple[int, int, int]:
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return tuple(map(_versionatom, s.split('.')[:3]))
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def _versionatom(s: str) -> int:
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if s.isdigit():
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return int(s)
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match = RE_NUM.match(s)
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return int(match.groups()[0]) if match else 0
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# available socket options for TCP level
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KNOWN_TCP_OPTS = {
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'TCP_CORK', 'TCP_DEFER_ACCEPT', 'TCP_KEEPCNT',
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'TCP_KEEPIDLE', 'TCP_KEEPINTVL', 'TCP_LINGER2',
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'TCP_MAXSEG', 'TCP_NODELAY', 'TCP_QUICKACK',
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'TCP_SYNCNT', 'TCP_USER_TIMEOUT', 'TCP_WINDOW_CLAMP',
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}
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LINUX_VERSION = None
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if sys.platform.startswith('linux'):
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LINUX_VERSION = _linux_version_to_tuple(platform.release())
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if LINUX_VERSION < (2, 6, 37):
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KNOWN_TCP_OPTS.remove('TCP_USER_TIMEOUT')
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# Windows Subsystem for Linux is an edge-case: the Python socket library
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# returns most TCP_* enums, but they aren't actually supported
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if platform.release().endswith("Microsoft"):
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KNOWN_TCP_OPTS = {'TCP_NODELAY', 'TCP_KEEPIDLE', 'TCP_KEEPINTVL',
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'TCP_KEEPCNT'}
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elif sys.platform.startswith('darwin'):
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KNOWN_TCP_OPTS.remove('TCP_USER_TIMEOUT')
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elif 'bsd' in sys.platform:
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KNOWN_TCP_OPTS.remove('TCP_USER_TIMEOUT')
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# According to MSDN Windows platforms support getsockopt(TCP_MAXSSEG) but not
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# setsockopt(TCP_MAXSEG) on IPPROTO_TCP sockets.
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elif sys.platform.startswith('win'):
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KNOWN_TCP_OPTS = {'TCP_NODELAY'}
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elif sys.platform.startswith('cygwin'):
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KNOWN_TCP_OPTS = {'TCP_NODELAY'}
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# illumos does not allow to set the TCP_MAXSEG socket option,
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# even if the Oracle documentation says otherwise.
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# TCP_USER_TIMEOUT does not exist on Solaris 11.4
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elif sys.platform.startswith('sunos'):
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KNOWN_TCP_OPTS.remove('TCP_MAXSEG')
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KNOWN_TCP_OPTS.remove('TCP_USER_TIMEOUT')
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# aix does not allow to set the TCP_MAXSEG
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# or the TCP_USER_TIMEOUT socket options.
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elif sys.platform.startswith('aix'):
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KNOWN_TCP_OPTS.remove('TCP_MAXSEG')
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KNOWN_TCP_OPTS.remove('TCP_USER_TIMEOUT')
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__all__ = (
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'LINUX_VERSION',
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'SOL_TCP',
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'KNOWN_TCP_OPTS',
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)
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