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30 lines
867 B
30 lines
867 B
3 years ago
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import platform
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# Fix for issue reported in https://github.com/Pylons/waitress/issues/138,
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# Python on Windows may not define IPPROTO_IPV6 in socket.
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import socket
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import sys
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import warnings
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# True if we are running on Windows
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WIN = platform.system() == "Windows"
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MAXINT = sys.maxsize
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HAS_IPV6 = socket.has_ipv6
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if hasattr(socket, "IPPROTO_IPV6") and hasattr(socket, "IPV6_V6ONLY"):
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IPPROTO_IPV6 = socket.IPPROTO_IPV6
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IPV6_V6ONLY = socket.IPV6_V6ONLY
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else: # pragma: no cover
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if WIN:
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IPPROTO_IPV6 = 41
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IPV6_V6ONLY = 27
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else:
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warnings.warn(
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"OS does not support required IPv6 socket flags. This is requirement "
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"for Waitress. Please open an issue at https://github.com/Pylons/waitress. "
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"IPv6 support has been disabled.",
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RuntimeWarning,
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)
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HAS_IPV6 = False
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