Python errno.EWOULDBLOCK属性代码示例

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def _receive_device(self):
        """Receive a single device from the monitor.

        Return the received :class:`Device`, or ``None`` if no device could be
        received.

        """
        while True:
            try:
                device_p = self._libudev.udev_monitor_receive_device(self)
                return Device(self.context, device_p) if device_p else None
            except EnvironmentError as error:
                if error.errno in (errno.EAGAIN, errno.EWOULDBLOCK):
                    # No data available
                    return None
                elif error.errno == errno.EINTR:
                    # Try again if our system call was interrupted
                    continue
                else:
                    raise 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def _send_buffer(self, buff, target, send_all=False):
        size = len(buff)
        tosend = size
        already_sent = 0

        while tosend > 0:
            try:
                # i should be able to send a bytearray
                sent = target.send(buff[already_sent:])
                if sent == 0:
                    raise RuntimeError('socket connection broken')

                already_sent += sent
                tosend -= sent

            except socket.error as e:
                # if full buffers then wait for them to drain and try again
                if e.errno in [errno.EAGAIN, errno.EWOULDBLOCK]:
                    if send_all:
                        continue
                    return buff[already_sent:]
                else:
                    raise exception.SocketException(str(e))
        return None 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def ready_to_read(self):
        while True:
            ancillary_size = socket.CMSG_LEN(self.MAX_SIZE)
            try:
                message, ancillary_messages, _msg_flags, from_info = \
                    self.sock.recvmsg(self.MAX_SIZE, ancillary_size)
            except (IOError, OSError) as err:
                if err.args[0] != errno.EWOULDBLOCK:
                    self.warning("Socket receive failed: %s", err)
                return
            if not MACOS:
                rx_interface_index = None
                for anc in ancillary_messages:
                    # pylint:disable=no-member
                    if anc[0] == socket.SOL_IP and anc[1] == socket.IP_PKTINFO:
                        packet_info = in_pktinfo.from_buffer_copy(anc[2])
                        rx_interface_index = packet_info.ipi_ifindex
                    elif anc[0] == socket.SOL_IPV6 and anc[1] == socket.IPV6_PKTINFO:
                        packet_info = in6_pktinfo.from_buffer_copy(anc[2])
                        rx_interface_index = packet_info.ipi6_ifindex
                if rx_interface_index and (rx_interface_index != self._interface_index):
                    # Message received on "wrong" interface; ignore
                    return
            self._receive_function(message, from_info, self.sock) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def _sendBuffer(self, buff):
        size = len(buff)
        tosend = size
        already_sent = 0

        while tosend > 0:
            try:
                # i should be able to send a bytearray
                sent = self.client.send(buff[already_sent:])
                if sent == 0:
                    raise RuntimeError('socket connection broken')

                already_sent += sent
                tosend -= sent

            except socket.error as e:
                # if we have full buffers then wait for them to drain and try
                # again
                if e.errno in [errno.EAGAIN, errno.EWOULDBLOCK]:
                    return buff[already_sent:]
                else:
                    raise e

        return None 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def run_for_multiple(self, timeout):
        while self.alive:
            self.notify()

            try:
                ready = self.wait(timeout)
            except StopWaiting:
                return

            if ready is not None:
                for listener in ready:
                    if listener == self.PIPE[0]:
                        continue

                    try:
                        self.accept(listener)
                    except EnvironmentError as e:
                        if e.errno not in (errno.EAGAIN, errno.ECONNABORTED,
                                errno.EWOULDBLOCK):
                            raise

            if not self.is_parent_alive():
                return 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def _receive(self):
        """Receive any incoming socket data.

            If an error is thrown, handle it and return an empty string.

        :return: data_in
        :rtype: bytes
        """
        data_in = EMPTY_BUFFER
        try:
            if not self.socket:
                raise socket.error('connection/socket error')
            data_in = self._read_from_socket()
        except socket.timeout:
            pass
        except (IOError, OSError) as why:
            if why.args[0] not in (EWOULDBLOCK, EAGAIN):
                self._exceptions.append(AMQPConnectionError(why))
                self._running.clear()
        return data_in 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def read(self, size):
        while len(self.buffer) < size:
            self.ensure_connection()

            try:
                packet = self.socket.recv(self.buffer_size)
            except socket.error as error:
                if error.errno in (EDEADLK, EAGAIN, EWOULDBLOCK):
                    gevent.sleep()
                    continue
                six.raise_from(NSQSocketError(*error.args), error)

            if not packet:
                self.close()

            self.buffer += packet

        data = self.buffer[:size]
        self.buffer = self.buffer[size:]

        return data 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def test_timeout_connect_ex(self):
        # Issue #12065: on a timeout, connect_ex() should return the original
        # errno (mimicking the behaviour of non-SSL sockets).
        with support.transient_internet(REMOTE_HOST):
            s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                                cert_reqs=ssl.CERT_REQUIRED,
                                ca_certs=REMOTE_ROOT_CERT,
                                do_handshake_on_connect=False)
            try:
                s.settimeout(0.0000001)
                rc = s.connect_ex((REMOTE_HOST, 443))
                if rc == 0:
                    self.skipTest("REMOTE_HOST responded too quickly")
                self.assertIn(rc, (errno.EAGAIN, errno.EWOULDBLOCK))
            finally:
                s.close() 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def test_connect_ex_error(self):
        with support.transient_internet(REMOTE_HOST):
            s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                                cert_reqs=ssl.CERT_REQUIRED,
                                ca_certs=REMOTE_ROOT_CERT)
            try:
                rc = s.connect_ex((REMOTE_HOST, 444))
                # Issue #19919: Windows machines or VMs hosted on Windows
                # machines sometimes return EWOULDBLOCK.
                errors = (
                    errno.ECONNREFUSED, errno.EHOSTUNREACH, errno.ETIMEDOUT,
                    errno.EWOULDBLOCK,
                )
                self.assertIn(rc, errors)
            finally:
                s.close() 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def write_to_fd(self, data: memoryview) -> int:
        try:
            return self.socket.send(data)  # type: ignore
        except ssl.SSLError as e:
            if e.args[0] == ssl.SSL_ERROR_WANT_WRITE:
                # In Python 3.5+, SSLSocket.send raises a WANT_WRITE error if
                # the socket is not writeable; we need to transform this into
                # an EWOULDBLOCK socket.error or a zero return value,
                # either of which will be recognized by the caller of this
                # method. Prior to Python 3.5, an unwriteable socket would
                # simply return 0 bytes written.
                return 0
            raise
        finally:
            # Avoid keeping to data, which can be a memoryview.
            # See https://github.com/tornadoweb/tornado/pull/2008
            del data 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def recv_callback(self, fd, flags):
        if flags & (GLib.IO_ERR | GLib.IO_HUP):
            self.stop(f"Bad client flags: {flags}")
            return True

        try:
            data = self._sock.recv(4096)
        except OSError as exc:
            if exc.errno not in (errno.EWOULDBLOCK, errno.EINTR):
                self.stop(f"Unexpected client error: {exc}")
            return True

        if not data:
            self.disable_recv()
            self.actor_ref.tell({"close": True})
            return True

        try:
            self.actor_ref.tell({"received": data})
        except pykka.ActorDeadError:
            self.stop("Actor is dead.")

        return True 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def send(self, message, flags):
        with self.send_token:
            if not self.state.ESTABLISHED:
                self.err("send() in socket state {0}".format(self.state))
                if self.state.CLOSE_WAIT:
                    raise err.Error(errno.EPIPE)
                raise err.Error(errno.ENOTCONN)
            if len(message) > self.send_miu:
                raise err.Error(errno.EMSGSIZE)
            while self.send_window_slots == 0 and self.state.ESTABLISHED:
                if flags & nfc.llcp.MSG_DONTWAIT:
                    raise err.Error(errno.EWOULDBLOCK)
                self.log("waiting on busy send window")
                self.send_token.wait()
            self.log("send {0} byte on {1}".format(len(message), str(self)))
            if self.state.ESTABLISHED:
                send_pdu = pdu.Information(self.peer, self.addr, data=message)
                send_pdu.ns = self.send_cnt
                self.send_cnt = (self.send_cnt + 1) % 16
                super(DataLinkConnection, self).send(send_pdu, flags)
            return self.state.ESTABLISHED is True 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def _socketpair_compat():
    """TCP/IP socketpair including Windows support"""
    listensock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_IP)
    listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    listensock.bind(("127.0.0.1", 0))
    listensock.listen(1)

    iface, port = listensock.getsockname()
    sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_IP)
    sock1.setblocking(0)
    try:
        sock1.connect(("localhost", port))
    except socket.error as err:
        if err.errno != errno.EINPROGRESS and err.errno != errno.EWOULDBLOCK and err.errno != EAGAIN:
            raise
    sock2, address = listensock.accept()
    sock2.setblocking(0)
    listensock.close()
    return (sock1, sock2) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def test_timeout_connect_ex(self):
        # Issue #12065: on a timeout, connect_ex() should return the original
        # errno (mimicking the behaviour of non-SSL sockets).
        with test_support.transient_internet("svn.python.org"):
            s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                                cert_reqs=ssl.CERT_REQUIRED,
                                ca_certs=SVN_PYTHON_ORG_ROOT_CERT,
                                do_handshake_on_connect=False)
            try:
                s.settimeout(0.0000001)
                rc = s.connect_ex(('svn.python.org', 443))
                if rc == 0:
                    self.skipTest("svn.python.org responded too quickly")
                self.assertIn(rc, (errno.EAGAIN, errno.EWOULDBLOCK))
            finally:
                s.close() 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import EWOULDBLOCK [as 别名]
def doRead(self):
        """Calls self.protocol.dataReceived with all available data.

        This reads up to self.bufferSize bytes of data from its socket, then
        calls self.dataReceived(data) to process it.  If the connection is not
        lost through an error in the physical recv(), this function will return
        the result of the dataReceived call.
        """
        try:
            data = self.socket.recv(self.bufferSize)
        except socket.error as se:
            if se.args[0] == EWOULDBLOCK:
                return
            else:
                return main.CONNECTION_LOST

        return self._dataReceived(data)