def _getnameinfo(self, sockaddr, flags):
if not isinstance(flags, int):
raise TypeError('an integer is required')
if not isinstance(sockaddr, tuple):
raise TypeError('getnameinfo() argument 1 must be a tuple')
address = sockaddr[0]
if not PY3 and isinstance(address, text_type):
address = address.encode('ascii')
if not isinstance(address, string_types):
raise TypeError('sockaddr[0] must be a string, not %s' % type(address).__name__)
port = sockaddr[1]
if not isinstance(port, int):
raise TypeError('port must be an integer, not %s' % type(port))
waiter = Waiter(self.hub)
result = self._getaddrinfo(address, str(sockaddr[1]), family=AF_UNSPEC, socktype=SOCK_DGRAM)
if not result:
reraise(*sys.exc_info())
elif len(result) != 1:
raise error('sockaddr resolved to multiple addresses')
family, _socktype, _proto, _name, address = result[0]
if family == AF_INET:
if len(sockaddr) != 2:
raise error("IPv4 sockaddr must be 2 tuple")
elif family == AF_INET6:
address = address[:2] + sockaddr[2:]
self.ares.getnameinfo(waiter, address, flags)
node, service = waiter.get()
if service is None:
if PY3:
# ares docs: "If the query did not complete
# successfully, or one of the values was not
# requested, node or service will be NULL ". Python 2
# allows that for the service, but Python 3 raises
# an error. This is tested by test_socket in py 3.4
err = gaierror('nodename nor servname provided, or not known')
err.errno = 8
raise err
service = '0'
return node, service
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