// 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;

    @DisplayName("writeInt2 should handle various values")
    void testWriteInt2Various(int value) {
        byte[] dst = new byte[4];
        SessionServicePacket.writeInt2(value, dst, 0);

        assertEquals((byte) ((value >> 8) & 0xFF), dst[0]);
        assertEquals((byte) (value & 0xFF), dst[1]);
    }

    @Test
    @DisplayName("writeInt2 with offset should write at correct position")

    }

    private static byte[] encode(final byte[] customData, final byte[] machineId) {
        final int size = 8 + 8 + 32;
        final byte[] enc = new byte[size];
        SMBUtil.writeInt4(size, enc, 0);
        SMBUtil.writeInt4(0, enc, 4);
        System.arraycopy(customData, 0, enc, 8, 8);
        System.arraycopy(machineId, 0, enc, 16, 32);
        return enc;
    }

            SMBUtil.writeInt2(23, buffer, offset); // sa_family: AF_INET6
            SMBUtil.writeInt2(445, buffer, offset + 2); // sin6_port
            SMBUtil.writeInt4(0, buffer, offset + 4); // sin6_flowinfo
            System.arraycopy(address.getAddress(), 0, buffer, offset + 8, 16); // sin6_addr
            SMBUtil.writeInt4(0, buffer, offset + 24); // sin6_scope_id
        } else {

        final int start = dstIndex;

        SMBUtil.writeInt2(25, dst, dstIndex);

        dst[dstIndex + 2] = (byte) (this.sessionBinding ? 0x1 : 0);
        dst[dstIndex + 3] = (byte) this.securityMode;
        dstIndex += 4;

        SMBUtil.writeInt4(this.capabilities, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(0, dst, dstIndex); // Channel
        dstIndex += 4;

        byte[] buffer = new byte[100];
        // Write non-aligned next entry offset (not divisible by 4)
        SMBUtil.writeInt4(7, buffer, 0); // 7 is not aligned to 4 bytes
        SMBUtil.writeInt4(FileNotifyInformation.FILE_ACTION_ADDED, buffer, 4);
        SMBUtil.writeInt4(8, buffer, 8); // file name length

        assertThrows(SMBProtocolDecodingException.class, () -> {

        // status (2 bytes)
        SMBUtil.writeInt2(0, buffer, bufferIndex);
        bufferIndex += 2;
        // converter (2 bytes)
        SMBUtil.writeInt2(100, buffer, bufferIndex);
        bufferIndex += 2;
        // numEntries (2 bytes)
        SMBUtil.writeInt2(3, buffer, bufferIndex);
        bufferIndex += 2;
        // totalAvailableEntries (2 bytes)
        SMBUtil.writeInt2(5, buffer, bufferIndex);

     * @param val the value to write
     * @param dst the destination byte array
     * @param dstIndex the starting index in the destination array
     */
    public static void writeInt4(long val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dstIndex++;
        dst[dstIndex] = (byte) (val >>= 8);
        dst[++dstIndex] = (byte) (val >>= 8);
        dst[++dstIndex] = (byte) (val >> 8);
    }

     * @param dstIndex starting index
     * @return number of bytes written
     */
    public int encode(byte[] dst, int dstIndex) {
        SMBUtil.writeInt8(offset, dst, dstIndex);
        SMBUtil.writeInt4(token, dst, dstIndex + 8);
        SMBUtil.writeInt4(length, dst, dstIndex + 12);
        return 16;
    }

    /**
     * Decode from byte array
     *
     * @param buffer source buffer

        dataOffset += pad;

        writeInt2(fid, dst, dstIndex);
        dstIndex += 2;
        writeInt4(offset, dst, dstIndex);
        dstIndex += 4;
        for (int i = 0; i < 4; i++) {
            dst[dstIndex++] = (byte) 0xFF;
        }
        writeInt2(writeMode, dst, dstIndex);
        dstIndex += 2;
        writeInt2(remaining, dst, dstIndex);
        dstIndex += 2;