sqlmapproject/sqlmap · error · InterfaceError

invalid CAS response length (%d)

Error message

invalid CAS response length (%d)

What it means

Error "invalid CAS response length (%d)" thrown in sqlmapproject/sqlmap.

Source

Thrown at extra/dbwire/cubrid.py:317

        handshake_done(self._sock)

    @staticmethod
    def _fixed(value, length):
        b = (value or "").encode("utf-8")[:length]
        return b + b"\x00" * (length - len(b))

    def _send(self, payload):
        # frame: [payload_len(4)][cas_info(4)][payload]
        try:
            self._sock.sendall(struct.pack(">i", len(payload)) + self._cas_info + payload)
        except (socket.error, OSError) as ex:
            raise connection_lost(ex)

    def _read_response(self):
        (data_length,) = struct.unpack(">i", self._recvn(4))
        if data_length < 0 or data_length > _MAX_MESSAGE_LENGTH:
            raise InterfaceError("invalid CAS response length (%d)" % data_length)
        body = self._recvn(data_length + 4)  # cas_info(4) + payload(data_length)
        self._cas_info = body[:4]
        reader = _Reader(body[4:])
        peek = struct.unpack_from(">i", body, 4)[0]
        if peek < 0:  # error response: response_code(<0), errno, message
            reader.int()
            errno = reader.int()
            message = _decode_text(reader.nts(reader.remaining()))
            if not isinstance(message, str):
                message = "errno %d" % errno
            self._raise(errno, "(remote) %s" % message.strip())
        return reader

    def _call(self, writer):
        # reconnect transparently if the CAS worker was released after a previous auto-committed statement
        if self._sock is None or bytearray(self._cas_info)[0] == 0:
            self._open()
        try:

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at extra/dbwire/cubrid.py:317 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sqlmapproject/sqlmap@0a35b20e39 (2026-08-26). Data as JSON: /api/errors/ecc06f33c9e33b5f. Report an issue: GitHub.