我们从Python开源项目中，提取了以下5个代码示例，用于说明如何使用socket.AI_NUMERICSERV。
def test_resolveNumericService(self): """ L{_resolveIPv6} raises a L{socket.gaierror} (L{socket.EAI_NONAME}) when invoked with a non-numeric port. (In other words, it is passing L{socket.AI_NUMERICSERV} to L{socket.getaddrinfo} and will not accidentally block if it receives bad input.) """ err = self.assertRaises(socket.gaierror, _resolveIPv6, "::1", "http") self.assertEqual(err.args[0], socket.EAI_NONAME)
def test_numericserv(self): greendns.resolve = _make_mock_resolve() greendns.resolve.add('example.com', '1.2.3.4') with tests.assert_raises(socket.gaierror): greendns.getaddrinfo('example.com', 'www', 0, 0, 0, socket.AI_NUMERICSERV)
def testGetaddrinfo(self): try: socket.getaddrinfo('localhost', 80) except socket.gaierror as err: if err.errno == socket.EAI_SERVICE: # see http://bugs.python.org/issue1282647 self.skipTest("buggy libc version") raise # len of every sequence is supposed to be == 5 for info in socket.getaddrinfo(HOST, None): self.assertEqual(len(info), 5) # host can be a domain name, a string representation of an # IPv4/v6 address or None socket.getaddrinfo('localhost', 80) socket.getaddrinfo('127.0.0.1', 80) socket.getaddrinfo(None, 80) if SUPPORTS_IPV6: socket.getaddrinfo('::1', 80) # port can be a string service name such as "http", a numeric # port number (int or long), or None socket.getaddrinfo(HOST, "http") socket.getaddrinfo(HOST, 80) socket.getaddrinfo(HOST, 80L) socket.getaddrinfo(HOST, None) # test family and socktype filters infos = socket.getaddrinfo(HOST, None, socket.AF_INET) for family, _, _, _, _ in infos: self.assertEqual(family, socket.AF_INET) infos = socket.getaddrinfo(HOST, None, 0, socket.SOCK_STREAM) for _, socktype, _, _, _ in infos: self.assertEqual(socktype, socket.SOCK_STREAM) # test proto and flags arguments socket.getaddrinfo(HOST, None, 0, 0, socket.SOL_TCP) socket.getaddrinfo(HOST, None, 0, 0, 0, socket.AI_PASSIVE) # a server willing to support both IPv4 and IPv6 will # usually do this socket.getaddrinfo(None, 0, socket.AF_UNSPEC, socket.SOCK_STREAM, 0, socket.AI_PASSIVE) # Issue 17269: test workaround for OS X platform bug segfault if hasattr(socket, 'AI_NUMERICSERV'): try: # The arguments here are undefined and the call may succeed # or fail. All we care here is that it doesn't segfault. socket.getaddrinfo("localhost", None, 0, 0, 0, socket.AI_NUMERICSERV) except socket.gaierror: pass
