unit test test.test_socket.ThreadedVSOCKSocketStreamTest.testStream hangs on WSL2 ubuntu 22.04 with Python 3.12.0a4+.
Added some print and it seems vsock does not work on WSL though /dev/vsock exists.
peter@Xiaomi-ShaWuJing:~/repo/cpython$ ls /dev/vsock
/dev/vsock
Modified test_socket.py snippet:
@unittest.skipIf(fcntl is None, "need fcntl")
@unittest.skipUnless(HAVE_SOCKET_VSOCK,
'VSOCK sockets required for this test.')
@unittest.skipUnless(get_cid() != 2,
"This test can only be run on a virtual guest.")
class ThreadedVSOCKSocketStreamTest(unittest.TestCase, ThreadableTest):
def __init__(self, methodName='runTest'):
print('__init__')
unittest.TestCase.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def setUp(self):
print('setUp')
self.serv = socket.socket(socket.AF_VSOCK, socket.SOCK_STREAM)
self.addCleanup(self.serv.close)
self.serv.bind((socket.VMADDR_CID_ANY, VSOCKPORT))
self.serv.listen()
self.serverExplicitReady()
print('Before serv.accept')
self.conn, self.connaddr = self.serv.accept()
print('After serv.accept')
self.addCleanup(self.conn.close)
print('end - setUp')
def clientSetUp(self):
print('clientSetup')
time.sleep(0.1)
self.cli = socket.socket(socket.AF_VSOCK, socket.SOCK_STREAM)
self.addCleanup(self.cli.close)
cid = get_cid()
print('cid: ', cid)
print('before cli.connect')
self.cli.connect((cid, VSOCKPORT))
print('end - clientSetup')
def testStream(self):
print('testStream')
msg = self.conn.recv(1024)
self.assertEqual(msg, MSG)
def _testStream(self):
self.cli.send(MSG)
self.cli.close()
test output:
./python -m unittest -v test.test_socket.ThreadedVSOCKSocketStreamTest.testStream
__init__
testStream (test.test_socket.ThreadedVSOCKSocketStreamTest.testStream) ... setUp
Before serv.accept
clientSetup
cid: 4294967295
before cli.connect
^CTraceback (most recent call last):
File "/home/peter/repo/cpython/Lib/runpy.py", line 198, in _run_module_as_main
return _run_code(code, main_globals, None,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peter/repo/cpython/Lib/runpy.py", line 88, in _run_code
exec(code, run_globals)
File "/home/peter/repo/cpython/Lib/unittest/__main__.py", line 18, in <module>
main(module=None)
File "/home/peter/repo/cpython/Lib/unittest/main.py", line 102, in __init__
self.runTests()
File "/home/peter/repo/cpython/Lib/unittest/main.py", line 274, in runTests
self.result = testRunner.run(self.test)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peter/repo/cpython/Lib/unittest/runner.py", line 208, in run
test(result)
File "/home/peter/repo/cpython/Lib/unittest/suite.py", line 84, in __call__
return self.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peter/repo/cpython/Lib/unittest/suite.py", line 122, in run
test(result)
File "/home/peter/repo/cpython/Lib/unittest/suite.py", line 84, in __call__
return self.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peter/repo/cpython/Lib/unittest/suite.py", line 122, in run
test(result)
File "/home/peter/repo/cpython/Lib/unittest/case.py", line 678, in __call__
return self.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peter/repo/cpython/Lib/unittest/case.py", line 619, in run
self._callSetUp()
File "/home/peter/repo/cpython/Lib/unittest/case.py", line 576, in _callSetUp
self.setUp()
File "/home/peter/repo/cpython/Lib/test/test_socket.py", line 376, in _setUp
self.__setUp()
File "/home/peter/repo/cpython/Lib/test/test_socket.py", line 520, 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()
^^^^^^^^^^^^^^
KeyboardInterrupt
sys:1: ResourceWarning: unclosed <socket.socket fd=3, family=40, type=1, proto=0, laddr=(4294967295, 1234)>
sys:1: ResourceWarning: unclosed <socket.socket fd=5, family=40, type=1, proto=0, laddr=(4294967295, 4294967295)>
Exception ignored in: <generator object wait_threads_exit at 0x7ff8bd4ae900>
Traceback (most recent call last):
File "/home/peter/repo/cpython/Lib/test/support/threading_helper.py", line 92, in wait_threads_exit
File "/home/peter/repo/cpython/Lib/test/support/__init__.py", line 739, in gc_collect
ImportError: sys.meta_path is None, Python is likely shutting down