From 12be23cf3c1301be2c6b8fd4cb2cd35a567d2ea2 Mon Sep 17 00:00:00 2001 From: Dominic Socular Date: Wed, 21 Dec 2022 21:25:04 +0800 Subject: [PATCH] gh-100374: Fixed a bug in socket.getfqdn() (gh-100375) --- Lib/socket.py | 4 ++-- Lib/test/test_socket.py | 4 ++++ .../2022-12-20-16-14-19.gh-issue-100374.YRrVHT.rst | 1 + 3 files changed, 7 insertions(+), 2 deletions(-) create mode 100644 Misc/NEWS.d/next/Core and Builtins/2022-12-20-16-14-19.gh-issue-100374.YRrVHT.rst diff --git a/Lib/socket.py b/Lib/socket.py index 1c8cef6ce65810..3a4f94de9cc03a 100644 --- a/Lib/socket.py +++ b/Lib/socket.py @@ -785,11 +785,11 @@ def getfqdn(name=''): First the hostname returned by gethostbyaddr() is checked, then possibly existing aliases. In case no FQDN is available and `name` - was given, it is returned unchanged. If `name` was empty or '0.0.0.0', + was given, it is returned unchanged. If `name` was empty, '0.0.0.0' or '::', hostname from gethostname() is returned. """ name = name.strip() - if not name or name == '0.0.0.0': + if not name or name in ('0.0.0.0', '::'): name = gethostname() try: hostname, aliases, ipaddrs = gethostbyaddr(name) diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py index d808f3f62b96dc..f1b4018c265e18 100644 --- a/Lib/test/test_socket.py +++ b/Lib/test/test_socket.py @@ -1769,6 +1769,10 @@ def test_getaddrinfo_ipv6_basic(self): ) self.assertEqual(sockaddr, ('ff02::1de:c0:face:8d', 1234, 0, 0)) + def test_getfqdn_filter_localhost(self): + self.assertEqual(socket.getfqdn(), socket.getfqdn("0.0.0.0")) + self.assertEqual(socket.getfqdn(), socket.getfqdn("::")) + @unittest.skipUnless(socket_helper.IPV6_ENABLED, 'IPv6 required for this test.') @unittest.skipIf(sys.platform == 'win32', 'does not work on Windows') @unittest.skipIf(AIX, 'Symbolic scope id does not work') diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-12-20-16-14-19.gh-issue-100374.YRrVHT.rst b/Misc/NEWS.d/next/Core and Builtins/2022-12-20-16-14-19.gh-issue-100374.YRrVHT.rst new file mode 100644 index 00000000000000..e78352fb188e3c --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2022-12-20-16-14-19.gh-issue-100374.YRrVHT.rst @@ -0,0 +1 @@ +Fix incorrect result and delay in :func:`socket.getfqdn`. Patch by Dominic Socular.