byte[] sequence = new byte[8];
        SMBUtil.writeInt4(msg.getSignSeq(), sequence, 0);
        update(sequence, 0, sequence.length);
        index += 8;
        if ( msg.getCommand() == ServerMessageBlock.SMB_COM_READ_ANDX ) {
            /*
             * SmbComReadAndXResponse reads directly from the stream into separate byte[] b.
             */
            SmbComReadAndXResponse raxr = (SmbComReadAndXResponse) msg;

            switch ( request.getCommand() ) {
            case ServerMessageBlock.SMB_COM_OPEN_ANDX:
            case ServerMessageBlock.SMB_COM_NT_CREATE_ANDX:
            case ServerMessageBlock.SMB_COM_READ_ANDX:
            case ServerMessageBlock.SMB_COM_WRITE_ANDX:
            case ServerMessageBlock.SMB_COM_CLOSE:
            case ServerMessageBlock.SMB_COM_TREE_DISCONNECT:
                break;

                throw new IOException( "Invalid payload size: " + size );
            }
            int errorCode = Encdec.dec_uint32le( BUF, 9 ) & 0xFFFFFFFF;
            if (resp.command == ServerMessageBlock.SMB_COM_READ_ANDX &&
                        (errorCode == 0 ||
                        errorCode == 0x80000005)) { // overflow indicator normal for pipe
                SmbComReadAndXResponse r = (SmbComReadAndXResponse)resp;

                throw new IOException("Invalid payload size: " + size);
            }
            int errorCode = Encdec.dec_uint32le(buffer, 9) & 0xFFFFFFFF;
            if ( resp.getCommand() == ServerMessageBlock.SMB_COM_READ_ANDX
                    && ( errorCode == 0 || errorCode == NtStatus.NT_STATUS_BUFFER_OVERFLOW ) ) {
                // overflow indicator normal for pipe