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147 lines
5.4 KiB
Python
147 lines
5.4 KiB
Python
# Copyright (c) 2006-2007, Linden Research, Inc.
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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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import sys
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import gevent
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from gevent import socket
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from gevent import testing as greentest
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from gevent.testing import TestCase, tcp_listener
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from gevent.testing import gc_collect_if_needed
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from gevent.testing import skipOnPyPy
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from gevent.testing import params
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PY3 = sys.version_info[0] >= 3
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def _write_to_closed(f, s):
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try:
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r = f.write(s)
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except ValueError:
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assert PY3
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else:
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assert r is None, r
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class TestGreenIo(TestCase):
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def test_close_with_makefile(self):
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def accept_close_early(listener):
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# verify that the makefile and the socket are truly independent
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# by closing the socket prior to using the made file
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try:
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conn, _ = listener.accept()
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fd = conn.makefile(mode='wb')
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conn.close()
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fd.write(b'hello\n')
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fd.close()
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_write_to_closed(fd, b'a')
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self.assertRaises(socket.error, conn.send, b'b')
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finally:
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listener.close()
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def accept_close_late(listener):
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# verify that the makefile and the socket are truly independent
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# by closing the made file and then sending a character
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try:
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conn, _ = listener.accept()
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fd = conn.makefile(mode='wb')
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fd.write(b'hello')
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fd.close()
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conn.send(b'\n')
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conn.close()
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_write_to_closed(fd, b'a')
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self.assertRaises(socket.error, conn.send, b'b')
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finally:
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listener.close()
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def did_it_work(server):
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client = socket.create_connection((params.DEFAULT_CONNECT, server.getsockname()[1]))
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fd = client.makefile(mode='rb')
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client.close()
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self.assertEqual(fd.readline(), b'hello\n')
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self.assertFalse(fd.read())
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fd.close()
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server = tcp_listener()
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server_greenlet = gevent.spawn(accept_close_early, server)
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did_it_work(server)
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server_greenlet.kill()
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server = tcp_listener()
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server_greenlet = gevent.spawn(accept_close_late, server)
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did_it_work(server)
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server_greenlet.kill()
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@skipOnPyPy("Takes multiple GCs and issues a warning we can't catch")
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def test_del_closes_socket(self):
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import warnings
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def accept_once(listener):
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# delete/overwrite the original conn
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# object, only keeping the file object around
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# closing the file object should close everything
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# This is not *exactly* true on Python 3. This produces
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# a ResourceWarning, which we silence below. (Previously we actually
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# *saved* a reference to the socket object, so we
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# weren't testing what we thought we were.)
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# It's definitely not true on PyPy, which needs GC to
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# reliably close everything; sometimes this is more than
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# one collection cycle. And PyPy issues a warning with -X
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# track-resources that we cannot catch.
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with warnings.catch_warnings():
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warnings.simplefilter('ignore')
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try:
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conn = listener.accept()[0]
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# Note that we overwrite the original variable,
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# losing our reference to the socket.
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conn = conn.makefile(mode='wb')
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conn.write(b'hello\n')
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conn.close()
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_write_to_closed(conn, b'a')
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finally:
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listener.close()
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del listener
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del conn
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gc_collect_if_needed()
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gc_collect_if_needed()
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server = tcp_listener()
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gevent.spawn(accept_once, server)
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client = socket.create_connection((params.DEFAULT_CONNECT, server.getsockname()[1]))
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with gevent.Timeout.start_new(0.5):
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fd = client.makefile()
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client.close()
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self.assertEqual(fd.read(), 'hello\n')
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# If the socket isn't closed when 'accept_once' finished,
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# then this will hang and exceed the timeout
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self.assertEqual(fd.read(), '')
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fd.close()
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del client
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del fd
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if __name__ == '__main__':
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greentest.main()
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