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python311/gh-126572-test_ssl-no-stop-ThreadedEchoServer-OSError.patch

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From 3d390148c05a7ea2d401c4633e7d4db75ebf97d9 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <encukou@gmail.com>
Date: Thu, 7 Nov 2024 11:07:02 +0100
Subject: [PATCH] gh-126500: test_ssl: Don't stop ThreadedEchoServer on OSError
in ConnectionHandler; rely on __exit__ (GH-126503)
If `read()` in the ConnectionHandler thread raises `OSError` (except `ConnectionError`),
the ConnectionHandler shuts down the entire ThreadedEchoServer,
preventing further connections.
It also does that for `EPROTOTYPE` in `wrap_conn`.
As far as I can see, this is done to avoid the server thread getting stuck,
forgotten, in its accept loop. However, since 2011 (5b95eb90a7167285b6544b50865227c584943c9a)
the server is used as a context manager, and its `__exit__` does `stop()` and `join()`.
(I'm not sure if we *always* used `with` since that commit, but currently we do.)
Make sure that the context manager *is* used, and remove the `server.stop()`
calls from ConnectionHandler.
(cherry picked from commit c9cda1608edf7664c10f4f467e24591062c2fe62)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
---
Lib/test/test_ssl.py | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
Index: Python-3.11.12/Lib/test/test_ssl.py
===================================================================
--- Python-3.11.12.orig/Lib/test/test_ssl.py 2025-04-19 19:55:02.157545844 +0200
+++ Python-3.11.12/Lib/test/test_ssl.py 2025-04-19 19:55:05.014552345 +0200
@@ -2516,7 +2516,6 @@
# See also http://erickt.github.io/blog/2014/11/19/adventures-in-debugging-a-potential-osx-kernel-bug/
if e.errno != errno.EPROTOTYPE and sys.platform != "darwin":
self.running = False
- self.server.stop()
self.close()
return False
else:
@@ -2651,10 +2650,6 @@
self.close()
self.running = False
- # normally, we'd just stop here, but for the test
- # harness, we want to stop the server
- self.server.stop()
-
def __init__(self, certificate=None, ssl_version=None,
certreqs=None, cacerts=None,
chatty=True, connectionchatty=False, starttls_server=False,
@@ -2688,21 +2683,33 @@
self.conn_errors = []
threading.Thread.__init__(self)
self.daemon = True
+ self._in_context = False
def __enter__(self):
+ if self._in_context:
+ raise ValueError('Re-entering ThreadedEchoServer context')
+ self._in_context = True
self.start(threading.Event())
self.flag.wait()
return self
def __exit__(self, *args):
+ assert self._in_context
+ self._in_context = False
self.stop()
self.join()
def start(self, flag=None):
+ if not self._in_context:
+ raise ValueError(
+ 'ThreadedEchoServer must be used as a context manager')
self.flag = flag
threading.Thread.start(self)
def run(self):
+ if not self._in_context:
+ raise ValueError(
+ 'ThreadedEchoServer must be used as a context manager')
self.sock.settimeout(1.0)
self.sock.listen(5)
self.active = True