SMBUtil.writeInt4(this.flags, dst, dstIndex);
        dstIndex += 4;
        dstIndex += 4; // Reserved2

        if (this.inputData != null) {
            SMBUtil.writeInt4(dstIndex - getHeaderStart(), dst, inputOffsetOffset);
            final int len = this.inputData.encode(dst, dstIndex);
            SMBUtil.writeInt4(len, dst, inputLengthOffset);
            dstIndex += len;
        } else {

        @Test
        @DisplayName("Should get header start")
        void testGetHeaderStart() {
            assertEquals(0, testMessage.getHeaderStart());
            byte[] buffer = new byte[1024];
            testMessage.encode(buffer, 100);
            assertEquals(100, testMessage.getHeaderStart());
        }

        @Test
        @DisplayName("Should get length")
        void testGetLength() {

        dstIndex += 4;

        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;

        SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, bufferOffsetOffset);
        final int len = this.info.encode(dst, dstIndex);
        SMBUtil.writeInt4(len, dst, bufferLengthOffset);
        dstIndex += len;
        return dstIndex - start;
    }

        bufferIndex += 4;
        this.dataRemaining = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        bufferIndex += 4; // Reserved2

        final int dataStart = getHeaderStart() + dataOffset;

        if (this.dataLength + this.outputBufferOffset > this.outputBuffer.length) {
            throw new SMBProtocolDecodingException("Buffer to small for read response");
        }

        dstIndex += 2;
        SMBUtil.writeInt8(this.previousSessionId, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, offsetOffset);

        dstIndex += pad8(dstIndex);

        if (this.token != null) {
            System.arraycopy(this.token, 0, dst, dstIndex, this.token.length);

            dstIndex += 2;
        }

        dstIndex += pad8(dstIndex);

        if (this.negotiateContexts != null && this.negotiateContexts.length != 0) {
            SMBUtil.writeInt4(dstIndex - getHeaderStart(), dst, negotitateContextOffsetOffset);
            for (final NegotiateContextRequest nc : this.negotiateContexts) {
                SMBUtil.writeInt2(nc.getContextType(), dst, dstIndex);

            SMBUtil.writeInt2(0, dst, fnLengthOffset);
        } else {
            final byte[] fnBytes = this.fileName.getBytes(StandardCharsets.UTF_16LE);
            SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, fnOffsetOffset);
            SMBUtil.writeInt2(fnBytes.length, dst, fnLengthOffset);
            System.arraycopy(fnBytes, 0, dst, dstIndex, fnBytes.length);
            dstIndex += fnBytes.length;
        }

        }
        dstIndex += 4;

        SMBUtil.writeInt4(this.writeFlags, dst, dstIndex);
        dstIndex += 4;

        SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, dataOffsetOffset);

        if (dstIndex + this.dataLength > dst.length) {
            throw new IllegalArgumentException(

        bufferIndex += 4;

        if (createContextOffset > 0 && createContextLength > 0) {
            final List<CreateContextResponse> contexts = new LinkedList<>();
            int createContextStart = getHeaderStart() + createContextOffset;
            int next = 0;
            do {
                int cci = createContextStart;
                next = SMBUtil.readInt4(buffer, cci);
                cci += 4;

        if (securityBufferOffset < 0) {
            throw new SMBProtocolDecodingException("Invalid security buffer offset: " + securityBufferOffset + " (must be non-negative)");
        }

        final int hdrStart = getHeaderStart();
        if (securityBufferLength > 0) {
            // Validate that security buffer doesn't exceed available data
            if (hdrStart + securityBufferOffset < hdrStart || // Check for integer overflow