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163 lines
5.0 KiB
163 lines
5.0 KiB
# Copyright (c) 2008 AG Projects
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# Author: Denis Bilenko
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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"""This test checks that underlying socket instances (gevent.socket.socket._sock)
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are not leaked by the hub.
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"""
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from __future__ import print_function
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from _socket import socket as c_socket
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import sys
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if sys.version_info[0] >= 3:
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# Python3 enforces that __weakref__ appears only once,
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# and not when a slotted class inherits from an unslotted class.
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# We mess around with the class MRO below and violate that rule
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# (because socket.socket defines __slots__ with __weakref__),
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# so import socket.socket before that can happen.
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__import__('socket')
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Socket = c_socket
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else:
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class Socket(c_socket):
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"Something we can have a weakref to"
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import _socket
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_socket.socket = Socket
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import gevent.testing as greentest
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from gevent import monkey; monkey.patch_all()
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from gevent.testing import flaky
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from pprint import pformat
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try:
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from thread import start_new_thread
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except ImportError:
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from _thread import start_new_thread
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from time import sleep
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import weakref
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import gc
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import socket
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socket._realsocket = Socket
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SOCKET_TIMEOUT = 0.1
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if greentest.RUNNING_ON_CI:
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SOCKET_TIMEOUT *= 2
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def init_server():
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s = socket.socket()
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s.settimeout(SOCKET_TIMEOUT)
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(('127.0.0.1', 0))
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s.listen(5)
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return s
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def handle_request(s, raise_on_timeout):
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try:
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conn, _ = s.accept()
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except socket.timeout:
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if raise_on_timeout:
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raise
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else:
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return
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#print('handle_request - accepted')
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res = conn.recv(100)
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assert res == b'hello', repr(res)
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#print('handle_request - recvd %r' % res)
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res = conn.send(b'bye')
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#print('handle_request - sent %r' % res)
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#print('handle_request - conn refcount: %s' % sys.getrefcount(conn))
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conn.close()
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def make_request(port):
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#print('make_request')
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s = socket.socket()
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s.connect(('127.0.0.1', port))
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#print('make_request - connected')
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res = s.send(b'hello')
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#print('make_request - sent %s' % res)
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res = s.recv(100)
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assert res == b'bye', repr(res)
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#print('make_request - recvd %r' % res)
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s.close()
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def run_interaction(run_client):
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s = init_server()
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start_new_thread(handle_request, (s, run_client))
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if run_client:
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port = s.getsockname()[1]
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start_new_thread(make_request, (port, ))
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sleep(0.1 + SOCKET_TIMEOUT)
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#print(sys.getrefcount(s._sock))
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#s.close()
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w = weakref.ref(s._sock)
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s.close()
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if greentest.WIN:
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# The background thread may not have even had a chance to run
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# yet, sleep again to be sure it does. Otherwise there could be
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# strong refs to the socket still around.
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try:
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sleep(0.1 + SOCKET_TIMEOUT)
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except Exception: # pylint:disable=broad-except
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pass
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return w
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def run_and_check(run_client):
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w = run_interaction(run_client=run_client)
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if greentest.PYPY:
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# PyPy doesn't use a strict ref counting and must
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# run a gc, but the object should be gone
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gc.collect()
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if w():
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print(pformat(gc.get_referrers(w())))
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for x in gc.get_referrers(w()):
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print(pformat(x))
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for y in gc.get_referrers(x):
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print('-', pformat(y))
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raise AssertionError('server should be dead by now')
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@greentest.skipOnCI("Often fail with timeouts or force closed connections; not sure why.")
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@greentest.skipIf(
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greentest.RUN_LEAKCHECKS and greentest.PY3,
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"Often fail with force closed connections; not sure why. "
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)
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class Test(greentest.TestCase):
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__timeout__ = greentest.LARGE_TIMEOUT
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@flaky.reraises_flaky_timeout(socket.timeout)
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def test_clean_exit(self):
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run_and_check(True)
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run_and_check(True)
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@flaky.reraises_flaky_timeout(socket.timeout)
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def test_timeout_exit(self):
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run_and_check(False)
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run_and_check(False)
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if __name__ == '__main__':
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greentest.main()
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