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

        // Reserved (2 bytes)
        SMBUtil.writeInt2(0, dst, dstIndex);
        dstIndex += 2;

        // Flags (2 bytes)
        SMBUtil.writeInt2(this.flags, dst, dstIndex);
        dstIndex += 2;

        // Session ID (8 bytes)
        SMBUtil.writeInt8(this.sessionId, dst, dstIndex);

        void testDecodeNegativeValuesAsUnsigned() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[12];
            SMBUtil.writeInt4(-1, buffer, 0); // chunksWritten
            SMBUtil.writeInt4(-2, buffer, 4); // chunkBytesWritten
            SMBUtil.writeInt4(-3, buffer, 8); // totalBytesWritten

            int bytesDecoded = response.decode(buffer, 0, buffer.length);

        // Status at +8
        SMBUtil.writeInt4(status, buf, start + 8);
        // Command at +12
        SMBUtil.writeInt2(command, buf, start + 12);
        // Flags at +16: server-to-redirector
        SMBUtil.writeInt4(0x00000001, buf, start + 16);
        // SessionId at +40 (sync header)
        SMBUtil.writeInt8(sessionId, buf, start + 40);
    }

    /**

        // inputOffset (relative to header start)
        SMBUtil.writeInt4(inputOffsetField, buf, pos);
        pos += 4;
        // inputCount
        SMBUtil.writeInt4(inputCount, buf, pos);
        pos += 4;
        // outputOffset (relative to header start)
        SMBUtil.writeInt4(outputOffsetField, buf, pos);
        pos += 4;
        // outputCount
        SMBUtil.writeInt4(outputCount, buf, pos);
        pos += 4;
        // ioctlFlags

            byte[] buffer = new byte[60];
            SMBUtil.writeInt2(60, buffer, 0);
            SMBUtil.writeInt2(0xFFFF, buffer, 2); // Max flags
            SMBUtil.writeInt4(0xFFFFFFFF, buffer, 4); // Max reserved (ignored)
            SMBUtil.writeInt8(Long.MAX_VALUE, buffer, 8); // Max times
            SMBUtil.writeInt8(Long.MAX_VALUE, buffer, 16);
            SMBUtil.writeInt8(Long.MAX_VALUE, buffer, 24);

        SMBUtil.writeInt2(0x0311, buffer, 4);
        SMBUtil.writeInt2(1, buffer, 6);
        SMBUtil.writeInt4(128, buffer, 60); // Context offset

        // At offset 128 + 64 (header start), set context with excessive data length
        int contextPos = 192;
        SMBUtil.writeInt2(1, buffer, contextPos); // Context type

        dstIndex += 2;
        SMBUtil.writeInt4(this.flags0, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.rootDirectoryFid, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.desiredAccess, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt8(this.allocationSize, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt4(this.extFileAttributes, dst, dstIndex);

        // Write context header
        SMBUtil.writeInt4(0, dst, dstIndex); // Next (offset to next context, 0 for last)
        dstIndex += 4;

        SMBUtil.writeInt2(16, dst, dstIndex); // NameOffset (from start of context)
        dstIndex += 2;

        SMBUtil.writeInt2(4, dst, dstIndex); // NameLength
        dstIndex += 2;

        SMBUtil.writeInt2(0, dst, dstIndex); // Reserved
        dstIndex += 2;

        // Write context header
        SMBUtil.writeInt4(0, dst, dstIndex); // Next (offset to next context, 0 for last)
        dstIndex += 4;

        SMBUtil.writeInt2(16, dst, dstIndex); // NameOffset (from start of context)
        dstIndex += 2;

        SMBUtil.writeInt2(4, dst, dstIndex); // NameLength
        dstIndex += 2;

        SMBUtil.writeInt2(0, dst, dstIndex); // Reserved
        dstIndex += 2;

        // Write context header
        SMBUtil.writeInt4(0, buffer, offset); // Next (offset to next context, 0 for last)
        offset += 4;

        SMBUtil.writeInt2(16, buffer, offset); // NameOffset (from start of context)
        offset += 2;

        SMBUtil.writeInt2(4, buffer, offset); // NameLength
        offset += 2;

        SMBUtil.writeInt2(0, buffer, offset); // Reserved
        offset += 2;