}

        this.length = bufferIndex - start;
        int len = this.length;

        if (this.nextCommand != 0) {
            // padding becomes part of signature if this is _PART_ of a compound chain
            len += pad8(bufferIndex);
        } else if (compound && this.nextCommand == 0 && this.readSize > 0) {

                nextCommand = Encdec.dec_uint32le(buffer, 20);

                if ((nextCommand != 0 ? nextCommand > maximumBufferSize : size > maximumBufferSize)) {
                    throw new IOException(String.format("Message size %d exceeds maxiumum buffer size %d",
                            nextCommand != 0 ? nextCommand : size, maximumBufferSize));
                }

            (byte) 0x00, (byte) 0x00, // CreditRequest/CreditResponse
            (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // Flags
            (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // NextCommand
            (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // MessageId
            (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // Reserved / AsyncId

            byte[] buffer = new byte[512];
            System.arraycopy(SMBUtil.SMB2_HEADER, 0, buffer, 0, 4);
            SMBUtil.writeInt4(0, buffer, 20); // nextCommand = 0 (final)

            testMessage.setBytesRead(10);
            testMessage.setReadSize(200); // Total read size

            int len = testMessage.decode(buffer, 0, true);