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# Copyright (c) 2018 gevent contributors. See LICENSE for details.
import _socket
class Resolver(object):
"""
A resolver that directly uses the system's resolver functions.
.. caution::
This resolver is *not* cooperative.
This resolver has the lowest overhead of any resolver and
typically approaches the speed of the unmodified :mod:`socket`
functions. However, it is not cooperative, so if name resolution
blocks, the entire thread and all its greenlets will be blocked.
This can be useful during debugging, or it may be a good choice if
your operating system provides a good caching resolver (such as
macOS's Directory Services) that is usually very fast and
functionally non-blocking.
.. versionchanged:: 1.3a2
This was previously undocumented and existed in :mod:`gevent.socket`.
"""
def __init__(self, hub=None):
pass
def close(self):
pass
for method in (
'gethostbyname',
'gethostbyname_ex',
'getaddrinfo',
'gethostbyaddr',
'getnameinfo'
):
locals()[method] = staticmethod(getattr(_socket, method))
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