gh-110391: socket NetworkConnectionAttributesTest always declare cli

[vstinner]

NetworkConnectionAttributesTest of test_socket now always declare the 'cli' attribute, so clientTearDown() cannot fail with AttributeError.

• Issue: test_socket: NetworkConnectionAttributesTest.clientTearDown() raised AttributeError on AMD64 RHEL7 Refleaks 3.x #110391

[vstinner]

I don't know the root cause of issue gh-110391, but this change should unblock test_socket which may provide more information if the test fails again.

[miss-islington]

Thanks @vstinner for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11, 3.12.
🐍🍒⛏🤖

[bedevere-app]

GH-110405 is a backport of this pull request to the 3.12 branch.

[bedevere-app]

GH-110406 is a backport of this pull request to the 3.11 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM Raspbian 3.12 has failed when building commit 4a87f92.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1138/builds/300) and take a look at the build logs.
4. Check if the failure is related to this commit (4a87f92) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1138/builds/300

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 15, done.        
remote: Counting objects:   6% (1/15)        
remote: Counting objects:  13% (2/15)        
remote: Counting objects:  20% (3/15)        
remote: Counting objects:  26% (4/15)        
remote: Counting objects:  33% (5/15)        
remote: Counting objects:  40% (6/15)        
remote: Counting objects:  46% (7/15)        
remote: Counting objects:  53% (8/15)        
remote: Counting objects:  60% (9/15)        
remote: Counting objects:  66% (10/15)        
remote: Counting objects:  73% (11/15)        
remote: Counting objects:  80% (12/15)        
remote: Counting objects:  86% (13/15)        
remote: Counting objects:  93% (14/15)        
remote: Counting objects: 100% (15/15)        
remote: Counting objects: 100% (15/15), done.        
remote: Compressing objects:  12% (1/8)        
remote: Compressing objects:  25% (2/8)        
remote: Compressing objects:  37% (3/8)        
remote: Compressing objects:  50% (4/8)        
remote: Compressing objects:  62% (5/8)        
remote: Compressing objects:  75% (6/8)        
remote: Compressing objects:  87% (7/8)        
remote: Compressing objects: 100% (8/8)        
remote: Compressing objects: 100% (8/8), done.        
remote: Total 15 (delta 7), reused 11 (delta 7), pack-reused 0        
From https://github.com/python/cpython
 * branch                  3.12       -> FETCH_HEAD
Note: switching to '4a87f927245a5eb4f007d9ba6cb0fbc96292e3a6'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 4a87f92724 [3.12] gh-110391: socket NetworkConnectionAttributesTest always declare cli (GH-110401) (#110405)
Switched to and reset branch '3.12'

./Modules/_testcapi/heaptype_relative.c: In function ‘make_sized_heaptypes’:
./Modules/_testcapi/heaptype_relative.c:62:28: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   62 |                            (unsigned long long)data_ptr,
      |                            ^

make: *** [Makefile:2012: buildbottest] Error 3