Python socket.SO_ERROR Examples

def _make_socket(iface_name: str, can_fd: bool) -> socket.SocketType:
    s = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
    try:
        s.bind((iface_name,))
        s.setsockopt(socket.SOL_SOCKET, _SO_TIMESTAMP, 1)  # timestamping
        if can_fd:
            s.setsockopt(socket.SOL_CAN_RAW, socket.CAN_RAW_FD_FRAMES, 1)

        s.setblocking(False)

        if 0 != s.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR):
            raise OSError('Could not configure the socket: getsockopt(SOL_SOCKET, SO_ERROR) != 0')
    except BaseException:
        with contextlib.suppress(Exception):
            s.close()
        raise

    return s 

def _handle_connect(self):
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            self.error = socket.error(err, os.strerror(err))
            # IOLoop implementations may vary: some of them return
            # an error state before the socket becomes writable, so
            # in that case a connection failure would be handled by the
            # error path in _handle_events instead of here.
            gen_log.warning("Connect error on fd %d: %s",
                            self.socket.fileno(), errno.errorcode[err])
            self.close()
            return
        if self._connect_callback is not None:
            callback = self._connect_callback
            self._connect_callback = None
            self._run_callback(callback)
        self._connecting = False 

def _handle_connect(self):
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            self.error = socket.error(err, os.strerror(err))
            # IOLoop implementations may vary: some of them return
            # an error state before the socket becomes writable, so
            # in that case a connection failure would be handled by the
            # error path in _handle_events instead of here.
            gen_log.warning("Connect error on fd %d: %s",
                            self.socket.fileno(), errno.errorcode[err])
            self.close()
            return
        if self._connect_callback is not None:
            callback = self._connect_callback
            self._connect_callback = None
            self._run_callback(callback)
        self._connecting = False 

def handle_connect(self):
        """Called when connection is established."""
        self.del_channel()
        if self._idler is not None and not self._idler.cancelled:
            self._idler.cancel()
        if not self.cmd_channel.connected:
            return self.close()
        # fix for asyncore on python < 2.6, meaning we aren't
        # actually connected.
        # test_active_conn_error tests this condition
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            raise socket.error(err)
        #
        msg = 'Active data connection established.'
        self.cmd_channel.respond('200 ' + msg)
        self.cmd_channel.log_cmd(self._cmd, self._normalized_addr, 200, msg)
        #
        if not self.cmd_channel.connected:
            return self.close()
        # delegate such connection to DTP handler
        handler = self.cmd_channel.dtp_handler(self.socket, self.cmd_channel)
        self.cmd_channel.data_channel = handler
        self.cmd_channel._on_dtp_connection() 

def handle_connect(self):
        """Called when connection is established."""
        self.del_channel()
        if self._idler is not None and not self._idler.cancelled:
            self._idler.cancel()
        if not self.cmd_channel.connected:
            return self.close()
        # fix for asyncore on python < 2.6, meaning we aren't
        # actually connected.
        # test_active_conn_error tests this condition
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            raise socket.error(err)
        #
        msg = 'Active data connection established.'
        self.cmd_channel.respond('200 ' + msg)
        self.cmd_channel.log_cmd(self._cmd, self._normalized_addr, 200, msg)
        #
        if not self.cmd_channel.connected:
            return self.close()
        # delegate such connection to DTP handler
        handler = self.cmd_channel.dtp_handler(self.socket, self.cmd_channel)
        self.cmd_channel.data_channel = handler
        self.cmd_channel._on_dtp_connection() 

def _connect(self, sock, sa):
        while not self._canceled and not ABORT_FLAG_FUNCTION():
            time.sleep(0.01)
            self._check_timeout()  # this should be done at the beginning of each loop
            status = sock.connect_ex(sa)
            if not status or status in (errno.EISCONN, WIN_EISCONN):
                break
            elif status in (errno.EINPROGRESS, WIN_EWOULDBLOCK):
                self.deadline = time.time() + self._timeout.getConnectTimeout()
            # elif status in (errno.EWOULDBLOCK, errno.EALREADY) or (os.name == 'nt' and status == errno.WSAEINVAL):
            #     pass
            yield

        if self._canceled or ABORT_FLAG_FUNCTION():
            raise CanceledException('Request canceled')

        error = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if error:
            # TODO: determine when this case can actually happen
            raise socket.error((error,)) 

def _sock_connect_tfo_cb(self, fut, sock, address, dat):
        if fut.cancelled():
            return

        try:
            err = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
            if err != 0:
                raise OSError(err, 'ConnectTfo failed %s' % (address,))  # Jump to any except clause below.
        except (BlockingIOError, InterruptedError):
            # socket is still registered, the callback will be retried later
            pass
        except Exception as exc:
            fut.set_exception(exc)
        else:
            if dat:
                self._sock_sendall(fut, False, sock, dat)
            else:
                fut.set_result(None) 

def handle_connect_event(self):
        if _debug: TCPClient._debug("handle_connect_event")

        # there might be an error
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if _debug: TCPClient._debug("    - err: %r", err)

        # check for connection refused
        if (err == 0):
            if _debug: TCPClient._debug("    - no error")
            self.connected = True
        elif (err == errno.ECONNREFUSED):
            if _debug: TCPClient._debug("    - connection to %r refused", self.peer)
            self.handle_error(socket.error(errno.ECONNREFUSED, "connection refused"))
            return

        # pass along
        asyncore.dispatcher.handle_connect_event(self) 

def _handle_connect(self):
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            self.error = socket.error(err, os.strerror(err))
            # IOLoop implementations may vary: some of them return
            # an error state before the socket becomes writable, so
            # in that case a connection failure would be handled by the
            # error path in _handle_events instead of here.
            #logging.warning("Connect error on fd %d: %s",
            #                self.socket.fileno(), errno.errorcode[err])
            ht.logger.warning("Connect error on fd %d: %s",
                            self.socket.fileno(), errno.errorcode[err])
            self.close()
            return
        if self._connect_callback is not None:
            callback = self._connect_callback
            self._connect_callback = None
            self._run_callback(callback)
        self._connecting = False 

def handle_connect_event(self):
        if _debug: TCPClient._debug("handle_connect_event")

        # there might be an error
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if _debug: TCPClient._debug("    - err: %r", err)

        # check for connection refused
        if (err == 0):
            if _debug: TCPClient._debug("    - no error")
            self.connected = True
        elif (err == errno.ECONNREFUSED):
            if _debug: TCPClient._debug("    - connection to %r refused", self.peer)
            self.handle_error(socket.error(errno.ECONNREFUSED, "connection refused"))
            return

        # pass along
        asyncore.dispatcher.handle_connect_event(self) 

def _sock_connect_cb(self, fut, sock, address):
        if fut.cancelled():
            return

        try:
            err = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
            if err != 0:
                # Jump to any except clause below.
                raise OSError(err, f'Connect call failed {address}')
        except (BlockingIOError, InterruptedError):
            # socket is still registered, the callback will be retried later
            pass
        except Exception as exc:
            fut.set_exception(exc)
        else:
            fut.set_result(None) 

def handle_connect_event(self):
        if _debug: TCPClient._debug("handle_connect_event")

        # there might be an error
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if _debug: TCPClient._debug("    - err: %r", err)

        # check for connection refused
        if (err == 0):
            if _debug: TCPClient._debug("    - no error")
        elif (err == 111):
            if _debug: TCPClient._debug("    - connection to %r refused", self.peer)
            self.handle_error(socket.error(111, "connection refused"))
            return

        # pass along
        asyncore.dispatcher.handle_connect_event(self) 

def handle_connect(self):
        """Called when connection is established."""
        self.del_channel()
        if self._idler is not None and not self._idler.cancelled:
            self._idler.cancel()
        if not self.cmd_channel.connected:
            return self.close()
        # fix for asyncore on python < 2.6, meaning we aren't
        # actually connected.
        # test_active_conn_error tests this condition
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            raise socket.error(err)
        #
        msg = 'Active data connection established.'
        self.cmd_channel.respond('200 ' + msg)
        self.cmd_channel.log_cmd(self._cmd, self._normalized_addr, 200, msg)
        #
        if not self.cmd_channel.connected:
            return self.close()
        # delegate such connection to DTP handler
        handler = self.cmd_channel.dtp_handler(self.socket, self.cmd_channel)
        self.cmd_channel.data_channel = handler
        self.cmd_channel._on_dtp_connection() 

def _sock_connect_cb(self, fut, sock, address):
        if fut.cancelled():
            return

        try:
            err = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
            if err != 0:
                # Jump to any except clause below.
                raise OSError(err, 'Connect call failed %s' % (address,))
        except (BlockingIOError, InterruptedError):
            # socket is still registered, the callback will be retried later
            pass
        except Exception as exc:
            fut.set_exception(exc)
        else:
            fut.set_result(None) 

def _handle_connect(self):
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            self.error = socket.error(err, os.strerror(err))
            # IOLoop implementations may vary: some of them return
            # an error state before the socket becomes writable, so
            # in that case a connection failure would be handled by the
            # error path in _handle_events instead of here.
            if self._connect_future is None:
                gen_log.warning("Connect error on fd %s: %s",
                                self.socket.fileno(), errno.errorcode[err])
            self.close()
            return
        if self._connect_callback is not None:
            callback = self._connect_callback
            self._connect_callback = None
            self._run_callback(callback)
        if self._connect_future is not None:
            future = self._connect_future
            self._connect_future = None
            future.set_result(self)
        self._connecting = False 

def _sock_connect_cb(self, fut, sock, address):
        if fut.cancelled():
            return

        try:
            err = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
            if err != 0:
                # Jump to any except clause below.
                raise OSError(err, 'Connect call failed %s' % (address,))
        except (BlockingIOError, InterruptedError):
            # socket is still registered, the callback will be retried later
            pass
        except Exception as exc:
            fut.set_exception(exc)
        else:
            fut.set_result(None) 

def _handle_connect(self):
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            self.error = socket.error(err, os.strerror(err))
            # IOLoop implementations may vary: some of them return
            # an error state before the socket becomes writable, so
            # in that case a connection failure would be handled by the
            # error path in _handle_events instead of here.
            if self._connect_future is None:
                gen_log.warning("Connect error on fd %s: %s",
                                self.socket.fileno(), errno.errorcode[err])
            self.close()
            return
        if self._connect_callback is not None:
            callback = self._connect_callback
            self._connect_callback = None
            self._run_callback(callback)
        if self._connect_future is not None:
            future = self._connect_future
            self._connect_future = None
            future.set_result(self)
        self._connecting = False 

def __processRead(self):
        try:
            incoming = self.__socket.recv(self.__recvBufferSize)
        except socket.error as e:
            if e.errno not in (socket.errno.EAGAIN, socket.errno.EWOULDBLOCK):
                self.disconnect()
            return False
        if self.__socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR):
            self.disconnect()
            return False
        if not incoming:
            self.disconnect()
            return False
        self.__readBuffer += incoming
        return True 

def handle_write_event(self):
        if _debug: TCPClient._debug("handle_write_event")

        # there might be an error
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if _debug: TCPClient._debug("    - err: %r", err)

        # check for connection refused
        if err == 0:
            if not self.connected:
                if _debug: TCPClient._debug("    - connected")
                self.handle_connect()
        else:
            if _debug: TCPClient._debug("    - peer: %r", self.peer)

            if (err == errno.ECONNREFUSED):
                socket_error = socket.error(err, "connection refused")
            elif (err == errno.ETIMEDOUT):
                socket_error = socket.error(err, "timed out")
            elif (err == errno.EHOSTUNREACH):
                socket_error = socket.error(err, "host unreachable")
            else:
                socket_error = socket.error(err, "other unknown: %r" % (err,))
            if _debug: TCPClient._debug("    - socket_error: %r", socket_error)

            self.handle_error(socket_error)
            return

        # pass along
        asyncore.dispatcher.handle_write_event(self) 

def getsockopt(self, level, optname, buflen=None):
            if (level == socket.SOL_SOCKET and
                optname == socket.SO_ERROR and
                not buflen):
                return 0
            raise NotImplementedError("Only asyncore specific behaviour "
                                      "implemented.") 

def get_sock_error(sock):
    error_number = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
    return socket.error(error_number, os.strerror(error_number)) 

def _socket_handle_errors(self, sock):
        """Raise exceptions for error states (SOL_ERROR) on the given socket object."""
        errno = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if errno != 0:
            if sys.platform == "win32":
                msg = socket.errorTab.get(errno, "Error {0}".format(errno))
                raise OSError(errno, "[WinError {0}] {1}".format(errno, msg), None, errno)
            else:
                raise OSError(errno, os.strerror(errno))

    ###############################
    # Low-level socket operations #
    ############################### 

def get_sock_error(sock):
    error_number = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
    return socket.error(error_number, os.strerror(error_number)) 

def scanPort(host, ports, timeout):
    portList = []
    sockList = set()
    while len(ports):
        socketObj = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        socketObj.setblocking(0)
        socketObj.connect_ex((host, ports.pop()))
        sockList.add(socketObj)
        if len(sockList) < 200 and len(ports) > 0:
            continue
        start_time = time.time()
        try:
            while True:
                # readable,writeable,exceptional
                readable, writeable, exceptional = select.select([], sockList, [], 0.5)
                if len(writeable) > 0:
                    for socketObj in writeable:
                        strtus = socketObj.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
                        if strtus == 0:
                            host, port = socketObj.getpeername()
                            portList.append(port)
                        socketObj.close()

                    sockList = sockList - set(writeable)
                if time.time() - start_time > timeout:
                    break
        except:
            pass

        sockList = set()

    portList.sort()
    return portList 

def getsockopt(self, level, optname, buflen=None):
            if (level == socket.SOL_SOCKET and
                optname == socket.SO_ERROR and
                not buflen):
                return 0
            raise NotImplementedError("Only asyncore specific behaviour "
                                      "implemented.") 

def handle_expt_event(self):
        # handle_expt_event() is called if there might be an error on the
        # socket, or if there is OOB data
        # check for the error condition first
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            # we can get here when select.select() says that there is an
            # exceptional condition on the socket
            # since there is an error, we'll go ahead and close the socket
            # like we would in a subclassed handle_read() that received no
            # data
            self.handle_close()
        else:
            self.handle_expt() 

def handle_connect_event(self):
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            raise OSError(err, _strerror(err))
        self.handle_connect()
        self.connected = True
        self.connecting = False 

def _handle_connect(self):
        try:
            err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        except socket.error as e:
            # Hurd doesn't allow SO_ERROR for loopback sockets because all
            # errors for such sockets are reported synchronously.
            if errno_from_exception(e) == errno.ENOPROTOOPT:
                err = 0
        if err != 0:
            self.error = socket.error(err, os.strerror(err))
            # IOLoop implementations may vary: some of them return
            # an error state before the socket becomes writable, so
            # in that case a connection failure would be handled by the
            # error path in _handle_events instead of here.
            if self._connect_future is None:
                gen_log.warning("Connect error on fd %s: %s",
                                self.socket.fileno(), errno.errorcode[err])
            self.close()
            return
        if self._connect_callback is not None:
            callback = self._connect_callback
            self._connect_callback = None
            self._run_callback(callback)
        if self._connect_future is not None:
            future = self._connect_future
            self._connect_future = None
            future.set_result(self)
        self._connecting = False 

def get_fd_error(self):
        errno = self.socket.getsockopt(socket.SOL_SOCKET,
                                       socket.SO_ERROR)
        return socket.error(errno, os.strerror(errno)) 

def handle_connect(self):
        """Called when connection is established."""
        if self._idler is not None and not self._idler.cancelled:
            self._idler.cancel()
        if not self.cmd_channel.connected:
            return self.close()
        # fix for asyncore on python < 2.6, meaning we aren't
        # actually connected.
        # test_active_conn_error tests this condition
        err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
        if err != 0:
            raise socket.error(err)
        #
        msg = 'Active data connection established.'
        self.cmd_channel.respond('200 ' + msg)
        self.cmd_channel.log_cmd(self._cmd, self._normalized_addr, 200, msg)
        #
        if not self.cmd_channel.connected:
            return self.close()
        # delegate such connection to DTP handler
        handler = self.cmd_channel.dtp_handler(self.socket, self.cmd_channel)
        self.cmd_channel.data_channel = handler
        self.cmd_channel._on_dtp_connection()
        # Can't close right now as the handler would have the socket
        # object disconnected.  This class will be "closed" once the
        # data transfer is completed or the client disconnects.
        #self.close()