final int start = di;
        int ch;
        final int strlen = str.length();

        for (int i = 0; di < dlim && i < strlen; i++) {
            ch = str.charAt(i);
            if (ch >= 0x0001 && ch <= 0x007F) {
                dst[di] = (byte) ch;
                di++;
            } else {
                if (ch > 0x07FF) {
                    if (dlim - di < 3) {
                        break;

    /**
     * Flag indicating that SIDs should be resolved to names.
     */
    public static final int SID_FLAG_RESOLVE_SIDS = 0x0001;

    /**
     * Well known SID: EVERYONE (S-1-1-0).
     */
    public static SID EVERYONE = null;
    /**
     * Well known SID: CREATOR_OWNER (S-1-3-0).
     */

    // extended file attribute encoding(others same as above)
    static final int ATTR_COMPRESSED = 0x800;
    static final int ATTR_NORMAL = 0x080;
    static final int ATTR_TEMPORARY = 0x100;

    static final int ATTR_GET_MASK = 0x7FFF; /* orig 0x7fff */
    static final int ATTR_SET_MASK = 0x30A7; /* orig 0x0027 */

    static final int DEFAULT_ATTR_EXPIRATION_PERIOD = 5000;

                try (SmbFileHandleImpl f = openUnshared(O_RDONLY, FILE_WRITE_ATTRIBUTES, FILE_SHARE_READ | FILE_SHARE_WRITE, dir,
                        dir != 0 ? 0x0001 : 0x0040)) {
                    th.send(new Trans2SetFileInformation(th.getConfig(), f.getFid(), attrs | dir, ctime, mtime, atime),
                            new Trans2SetFileInformationResponse(th.getConfig()), RequestParam.NO_RETRY);

    /** SMB2 create/open file command */
    protected static final short SMB2_CREATE = 0x0005;
    /** SMB2 close file command */
    protected static final short SMB2_CLOSE = 0x0006;
    /** SMB2 flush file command */
    protected static final short SMB2_FLUSH = 0x0007;
    /** SMB2 read file command */
    protected static final short SMB2_READ = 0x0008;
    /** SMB2 write file command */

        void testFlagsNameListReferralConstant() {
            assertEquals(0x0002, Trans2GetDfsReferralResponse.FLAGS_NAME_LIST_REFERRAL);
        }

        @Test
        @DisplayName("Should have correct FLAGS_TARGET_SET_BOUNDARY value")
        void testFlagsTargetSetBoundaryConstant() {
            assertEquals(0x0004, Trans2GetDfsReferralResponse.FLAGS_TARGET_SET_BOUNDARY);
        }

        @Test

    /**
     * Indicates that the referral contains a name list.
     */
    public static final int FLAGS_NAME_LIST_REFERRAL = 0x0002;
    /**
     * Indicates a target set boundary in the referral response.
     */
    public static final int FLAGS_TARGET_SET_BOUNDARY = 0x0004;
    /**
     * Indicates root targets in the DFS referral.
     */
    public static final int TYPE_ROOT_TARGETS = 0x0;
    /**

        byte[] encryptionKey = "12345678".getBytes();
        ByteBuffer buffer = ByteBuffer.allocate(response.byteCount);
        buffer.put(encryptionKey);
        buffer.put(domainNameBytes);
        buffer.putShort((short) 0x0000); // Null terminator

        byte[] byteData = buffer.array();

        // Call the method
        int bytesRead = response.readBytesWireFormat(byteData, 0);

        // Assertions

            // Leading zeros removed and consecutive zeros compressed
            assertEquals("2001:db8::1", method.invoke(null, "2001:0db8:0:0:0:0:0:1"));

            // Longest sequence of zeros compressed (3 zeros at end vs 1 zero at start)
            assertEquals("2001:db8:0:1::1", method.invoke(null, "2001:0db8:0:1:0:0:0:1"));

            // No compression when all segments are non-zero (just remove leading zeros)

            getResultMessageMethod.setAccessible(true);

            assertEquals("0x0004", getResultMessageMethod.invoke(null, 4), "Should return hex format for unknown code 4");
            assertEquals("0x00FF", getResultMessageMethod.invoke(null, 255), "Should return hex format for unknown code 255");
            assertEquals("0x1000", getResultMessageMethod.invoke(null, 4096), "Should return hex format for large unknown code");
        }