int index = offset + SIGNATURE_OFFSET;
        for ( int i = 0; i < SIGNATURE_LENGTH; i++ )
            data[ index + i ] = 0;

        // set signed flag
        int oldFlags = SMBUtil.readInt4(data, offset + 16);
        int flags = oldFlags | ServerMessageBlock2.SMB2_FLAGS_SIGNED;
        SMBUtil.writeInt4(flags, data, offset + 16);

        this.digest.update(data, offset, length);

        List<AvPair> pairs = new LinkedList<>();
        int pos = 0;
        boolean foundEnd = false;
        while ( pos + 4 <= data.length ) {
            int avId = SMBUtil.readInt2(data, pos);
            int avLen = SMBUtil.readInt2(data, pos + 2);
            pos += 4;

            if ( avId == AvPair.MsvAvEOL ) {
                if ( avLen != 0 ) {
                    throw new CIFSException("Invalid avLen for AvEOL");

     * @param flags
     */
    public AvFlags ( int flags ) {
        this(encode(flags));
    }


    /**
     * 
     * @return flags
     */
    public int getFlags () {
        return SMBUtil.readInt4(this.getRaw(), 0);
    }


    private static byte[] encode ( int flags ) {
        byte[] raw = new byte[4];
        SMBUtil.writeInt4(flags, raw, 0);
        return raw;
    }

        return 0;
    }
    int writeBytesWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int readParameterWordsWireFormat( byte[] buffer, int bufferIndex ) {
        count = readInt2( buffer, bufferIndex ) & 0xFFFFL;
        return 8;
    }
    int readBytesWireFormat( byte[] buffer, int bufferIndex ) {
        return 0;
    }
    public String toString() {

    FileSystem.RESOURCES.source(PublicSuffixDatabase.PUBLIC_SUFFIX_RESOURCE).use { resource ->
      GzipSource(resource).buffer().use { source ->
        var length = source.readInt()
        source.skip(length.toLong())
        length = source.readInt()
        buffer.write(source, length.toLong())
      }
    }
    while (!buffer.exhausted()) {
      val exception = buffer.readUtf8LineStrict()

            /*
             * these fields are common to all andx commands
             * so let's populate them here
             */

            andxCommand = buffer[bufferIndex];
            andxOffset = readInt2( buffer, bufferIndex + 2 );

            if( andxOffset == 0 ) { /* Snap server workaround */
                andxCommand = (byte)0xFF;
            }

            /*

        return 0;
    }
    int readSetupWireFormat( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }
    int readParametersWireFormat( byte[] buffer, int bufferIndex, int len ) {
        length = readInt4( buffer, bufferIndex );
        return 4;
    }
    int readDataWireFormat( byte[] buffer, int bufferIndex, int len ) {
        int start = bufferIndex;

        if (errorCode != 0)
            return 4;

   * Reads an integer as specified by {@link DataInputStream#readInt()}, except using little-endian
   * byte order.
   *
   * @return the next four bytes of the input stream, interpreted as an {@code int} in little-endian
   *     byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public int readInt() throws IOException {
    byte b1 = readAndCheckByte();

        return 0;
    }
    int writeBytesWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int readParameterWordsWireFormat( byte[] buffer, int bufferIndex ) {
        count = readInt2( buffer, bufferIndex ) & 0xFFFFL;
        return 8;
    }
    int readBytesWireFormat( byte[] buffer, int bufferIndex ) {
        return 0;
    }
    public String toString() {

     */
    @Override
    protected int readBytesWireFormat ( byte[] buffer, int bufferIndex ) throws SMBProtocolDecodingException {
        int start = bufferIndex;
        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize != 24 ) {
            throw new SMBProtocolDecodingException("Expected structureSize = 24");
        }

        this.oplockLevel = buffer[ bufferIndex + 2 ];