我们从Python开源项目中，提取了以下43个代码示例，用于说明如何使用asyncore.read()。
def test_unhandled(self): d = asyncore.dispatcher() d.ignore_log_types = () # capture output of dispatcher.log_info() (to stdout via print) fp = StringIO() stdout = sys.stdout try: sys.stdout = fp d.handle_expt() d.handle_read() d.handle_write() d.handle_connect() finally: sys.stdout = stdout lines = fp.getvalue().splitlines() expected = ['warning: unhandled incoming priority event', 'warning: unhandled read event', 'warning: unhandled write event', 'warning: unhandled connect event'] self.assertEqual(lines, expected)
def test_unhandled(self): d = asyncore.dispatcher() d.ignore_log_types = () # capture output of dispatcher.log_info() (to stdout via print) fp = StringIO() stdout = sys.stdout try: sys.stdout = fp d.handle_expt() d.handle_read() d.handle_write() d.handle_connect() d.handle_accept() finally: sys.stdout = stdout lines = fp.getvalue().splitlines() expected = ['warning: unhandled incoming priority event', 'warning: unhandled read event', 'warning: unhandled write event', 'warning: unhandled connect event', 'warning: unhandled accept event'] self.assertEqual(lines, expected)
def test_unhandled(self): d = asyncore.dispatcher() d.ignore_log_types = () # capture output of dispatcher.log_info() (to stdout via print) with support.captured_stdout() as stdout: d.handle_expt() d.handle_read() d.handle_write() d.handle_connect() lines = stdout.getvalue().splitlines() expected = ['warning: unhandled incoming priority event', 'warning: unhandled read event', 'warning: unhandled write event', 'warning: unhandled connect event'] self.assertEqual(lines, expected)
def _control(self, fd, events, flags): kevents = [] if events & self.WRITE: kevents.append(select.kevent( fd, filter=select.KQ_FILTER_WRITE, flags=flags)) if events & self.READ or not kevents: # always read when there is not a write kevents.append(select.kevent( fd, filter=select.KQ_FILTER_READ, flags=flags)) # even though control() takes a list, it seems to return # EINVAL on Mac OS X (10.6) when there is more than one # event in the list for kevent in kevents: self._kqueue.control([kevent], 0) # localize variable access to minimize overhead
def recv(self, buffer_size): try: data = self.socket.recv(buffer_size) except socket.error as err: debug("call: recv(), err: %s" % err, inst=self) if err.errno in _ERRNOS_DISCONNECTED: self.handle_close() return b'' elif err.errno in _ERRNOS_RETRY: raise RetryError else: raise else: if not data: # a closed connection is indicated by signaling # a read condition, and having recv() return 0. self.handle_close() return b'' else: return data
def test_readwriteexc(self): # Check exception handling behavior of read, write and _exception # check that ExitNow exceptions in the object handler method # bubbles all the way up through asyncore read/write/_exception calls tr1 = exitingdummy() self.assertRaises(asyncore.ExitNow, asyncore.read, tr1) self.assertRaises(asyncore.ExitNow, asyncore.write, tr1) self.assertRaises(asyncore.ExitNow, asyncore._exception, tr1) # check that an exception other than ExitNow in the object handler # method causes the handle_error method to get called tr2 = crashingdummy() asyncore.read(tr2) self.assertEqual(tr2.error_handled, True) tr2 = crashingdummy() asyncore.write(tr2) self.assertEqual(tr2.error_handled, True) tr2 = crashingdummy() asyncore._exception(tr2) self.assertEqual(tr2.error_handled, True) # asyncore.readwrite uses constants in the select module that # are not present in Windows systems (see this thread: # http://mail.python.org/pipermail/python-list/2001-October/109973.html) # These constants should be present as long as poll is available
def test_recv(self): fd = os.open(TESTFN, os.O_RDONLY) w = asyncore.file_wrapper(fd) os.close(fd) self.assertNotEqual(w.fd, fd) self.assertNotEqual(w.fileno(), fd) self.assertEqual(w.recv(13), b"It's not dead") self.assertEqual(w.read(6), b", it's") w.close() self.assertRaises(OSError, w.read, 1)
def test_send(self): d1 = b"Come again?" d2 = b"I want to buy some cheese." fd = os.open(TESTFN, os.O_WRONLY | os.O_APPEND) w = asyncore.file_wrapper(fd) os.close(fd) w.write(d1) w.send(d2) w.close() with open(TESTFN, 'rb') as file: self.assertEqual(file.read(), self.d + d1 + d2)
def test_recv(self): fd = os.open(TESTFN, os.O_RDONLY) w = asyncore.file_wrapper(fd) os.close(fd) self.assertNotEqual(w.fd, fd) self.assertNotEqual(w.fileno(), fd) self.assertEqual(w.recv(13), "It's not dead") self.assertEqual(w.read(6), ", it's") w.close() self.assertRaises(OSError, w.read, 1)
def test_send(self): d1 = "Come again?" d2 = "I want to buy some cheese." fd = os.open(TESTFN, os.O_WRONLY | os.O_APPEND) w = asyncore.file_wrapper(fd) os.close(fd) w.write(d1) w.send(d2) w.close() self.assertEqual(file(TESTFN).read(), self.d + d1 + d2)
def test_recv(self): fd = os.open(support.TESTFN, os.O_RDONLY) w = asyncore.file_wrapper(fd) os.close(fd) self.assertNotEqual(w.fd, fd) self.assertNotEqual(w.fileno(), fd) self.assertEqual(w.recv(13), b"It's not dead") self.assertEqual(w.read(6), b", it's") w.close() self.assertRaises(OSError, w.read, 1)
def test_send(self): d1 = b"Come again?" d2 = b"I want to buy some cheese." fd = os.open(support.TESTFN, os.O_WRONLY | os.O_APPEND) w = asyncore.file_wrapper(fd) os.close(fd) w.write(d1) w.send(d2) w.close() with open(support.TESTFN, 'rb') as file: self.assertEqual(file.read(), self.d + d1 + d2)
def test_readwrite(self): # Check that correct methods are called by readwrite() attributes = ('read', 'expt', 'write', 'closed', 'error_handled') expected = ( (select.POLLIN, 'read'), (select.POLLPRI, 'expt'), (select.POLLOUT, 'write'), (select.POLLERR, 'closed'), (select.POLLHUP, 'closed'), (select.POLLNVAL, 'closed'), ) class testobj: def __init__(self): self.read = False self.write = False self.closed = False self.expt = False self.error_handled = False def handle_read_event(self): self.read = True def handle_write_event(self): self.write = True def handle_close(self): self.closed = True def handle_expt_event(self): self.expt = True def handle_error(self): self.error_handled = True for flag, expectedattr in expected: tobj = testobj() self.assertEqual(getattr(tobj, expectedattr), False) asyncore.readwrite(tobj, flag) # Only the attribute modified by the routine we expect to be # called should be True. for attr in attributes: self.assertEqual(getattr(tobj, attr), attr==expectedattr) # check that ExitNow exceptions in the object handler method # bubbles all the way up through asyncore readwrite call tr1 = exitingdummy() self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1, flag) # check that an exception other than ExitNow in the object handler # method causes the handle_error method to get called tr2 = crashingdummy() self.assertEqual(tr2.error_handled, False) asyncore.readwrite(tr2, flag) self.assertEqual(tr2.error_handled, True)
def poll(self, timeout, _len=len, _READ=select.KQ_FILTER_READ, _WRITE=select.KQ_FILTER_WRITE, _EOF=select.KQ_EV_EOF, _ERROR=select.KQ_EV_ERROR): try: kevents = self._kqueue.control(None, _len(self.socket_map), timeout) except OSError as err: if err.errno == errno.EINTR: return raise for kevent in kevents: inst = self.socket_map.get(kevent.ident) if inst is None: continue if kevent.filter == _READ: if inst.readable(): _read(inst) if kevent.filter == _WRITE: if kevent.flags & _EOF: # If an asynchronous connection is refused, # kqueue returns a write event with the EOF # flag set. # Note that for read events, EOF may be returned # before all data has been consumed from the # socket buffer, so we only check for EOF on # write events. inst.handle_close() else: if inst.writable(): _write(inst) if kevent.flags & _ERROR: inst.handle_close() # =================================================================== # --- choose the better poller for this platform # ===================================================================
