https://github.com/python/cpython/commit/43bf8b30f918cb72ac9b992d55cdebf9c4299288
commit: 43bf8b30f918cb72ac9b992d55cdebf9c4299288
branch: 3.14
author: Miss Islington (bot) <31488909+miss-isling...@users.noreply.github.com>
committer: vsajip <vinay_sa...@yahoo.co.uk>
date: 2025-06-16T08:05:26+01:00
summary:
[3.14] gh-127319: Disable port reuse on HTTP, XMLRPC, and logging TCP servers
(GH-135405) (GH-135538)
(cherry picked from commit 2bd3895fcabb2dfdae5c0c72e60483e3d3267f0f)
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2025-06-11-15-08-10.gh-issue-127319.OVGFSZ.rst
M Lib/http/server.py
M Lib/logging/config.py
M Lib/test/test_logging.py
M Lib/xmlrpc/server.py
diff --git a/Lib/http/server.py b/Lib/http/server.py
index dda32644a28f90..10d18a9a753929 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -137,7 +137,7 @@
class HTTPServer(socketserver.TCPServer):
allow_reuse_address = True # Seems to make sense in testing environment
- allow_reuse_port = True
+ allow_reuse_port = False
def server_bind(self):
"""Override server_bind to store the server name."""
diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index c994349fd6eee5..3d9aa00fa52d11 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -1018,7 +1018,7 @@ class ConfigSocketReceiver(ThreadingTCPServer):
"""
allow_reuse_address = True
- allow_reuse_port = True
+ allow_reuse_port = False
def __init__(self, host='localhost', port=DEFAULT_LOGGING_CONFIG_PORT,
handler=None, ready=None, verify=None):
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
index 1e5adcc8db13f6..98ed154d8c652a 100644
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -1036,7 +1036,7 @@ class TestTCPServer(ControlMixin, ThreadingTCPServer):
"""
allow_reuse_address = True
- allow_reuse_port = True
+ allow_reuse_port = False
def __init__(self, addr, handler, poll_interval=0.5,
bind_and_activate=True):
diff --git a/Lib/xmlrpc/server.py b/Lib/xmlrpc/server.py
index 90a356fbb8eae4..8130c739af2fe8 100644
--- a/Lib/xmlrpc/server.py
+++ b/Lib/xmlrpc/server.py
@@ -578,7 +578,7 @@ class SimpleXMLRPCServer(socketserver.TCPServer,
"""
allow_reuse_address = True
- allow_reuse_port = True
+ allow_reuse_port = False
# Warning: this is for debugging purposes only! Never set this to True in
# production code, as will be sending out sensitive information (exception
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2025-06-11-15-08-10.gh-issue-127319.OVGFSZ.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2025-06-11-15-08-10.gh-issue-127319.OVGFSZ.rst
new file mode 100644
index 00000000000000..d90153c96841df
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2025-06-11-15-08-10.gh-issue-127319.OVGFSZ.rst
@@ -0,0 +1,3 @@
+Set the ``allow_reuse_port`` class variable to ``False`` on the XMLRPC,
+logging, and HTTP servers. This matches the behavior in prior Python
+releases, which is to not allow port reuse.
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