gh-101384: add socket timeout to ThreadedVSOCKSocketStreamTest and skip it on WSL

[peterjpxie]

1/ Add socket server timeout to ThreadedVSOCKSocketStreamTest so that it does not hang on client connection failure, e.g. on WSL.

After adding the timeout, it was able to fail on this test and continue as follows.

./python -m test -v test.test_socket2
======================================================================
ERROR: testStream (test.test_socket2.ThreadedVSOCKSocketStreamTest.testStream)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/peter/repo/cpython/Lib/test/test_socket2.py", line 376, in _setUp
    self.__setUp()
  File "/home/peter/repo/cpython/Lib/test/test_socket2.py", line 522, in setUp
    self.conn, self.connaddr = self.serv.accept()
                               ^^^^^^^^^^^^^^^^^^
  File "/home/peter/repo/cpython/Lib/socket.py", line 295, in accept
    fd, addr = self._accept()
               ^^^^^^^^^^^^^^
TimeoutError: timed out

======================================================================
ERROR: testStream (test.test_socket2.ThreadedVSOCKSocketStreamTest.testStream)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/peter/repo/cpython/Lib/test/test_socket2.py", line 364, in raise_queued_exception
    raise self.queue.get()
  File "/home/peter/repo/cpython/Lib/test/test_socket2.py", line 388, in clientRun
    self.clientSetUp()
  File "/home/peter/repo/cpython/Lib/test/test_socket2.py", line 535, in clientSetUp
    self.cli.connect((cid, VSOCKPORT))
OSError: [Errno 101] Network is unreachable

----------------------------------------------------------------------
Ran 724 tests in 41.724s

FAILED (errors=2, skipped=65)
test test.test_socket2 failed
test.test_socket2 failed (2 errors) in 41.8 sec

== Tests result: FAILURE ==

1 test failed:
    test.test_socket2

Total duration: 41.9 sec
Tests result: FAILURE

2/ Furthermore, as it does not work on WSL (OSError: [Errno 101] Network is unreachable), skip it on WSL.

This works on VMware workstation for communication between VM guests and host.

• Issue: Unit test test.test_socket.ThreadedVSOCKSocketStreamTest.testStream hangs on WSL2 ubuntu #101384

[ghost]

The following commit authors need to sign the Contributor License Agreement:

• peter@Xiaomi-ShaWuJing

Click the button to sign:

[peterjpxie]

Forgot to set user.email and user.name and it ends up with a invalid author peter@Xiaomi-ShaWuJing that I can't sign the CLA, close it and will re-do it.