* @return {@code true} if the argument is a 6to4 address
   */
  public static boolean is6to4Address(Inet6Address ip) {
    byte[] bytes = ip.getAddress();
    return (bytes[0] == (byte) 0x20) && (bytes[1] == (byte) 0x02);
  }

  /**
   * Returns the IPv4 address embedded in a 6to4 address.
   *
   * @param ip {@link Inet6Address} to be examined for embedded IPv4 in 6to4 address

	// map header, size 5
	// string "NodeName"
	o = append(o, 0x85, 0xa8, 0x4e, 0x6f, 0x64, 0x65, 0x4e, 0x61, 0x6d, 0x65)
	o = msgp.AppendString(o, z.NodeName)
	// string "Uptime"
	o = append(o, 0xa6, 0x55, 0x70, 0x74, 0x69, 0x6d, 0x65)
	o = msgp.AppendInt64(o, z.Uptime)
	// string "ActiveWorkers"
	o = append(o, 0xad, 0x41, 0x63, 0x74, 0x69, 0x76, 0x65, 0x57, 0x6f, 0x72, 0x6b, 0x65, 0x72, 0x73)
	o, err = z.ActiveWorkers.MarshalMsg(o)

        }

        @Test
        @DisplayName("Should handle round-trip with salt only")
        void testRoundTripSaltOnly() throws SMBProtocolDecodingException {
            byte[] originalSalt = { 0x0A, 0x0B, 0x0C, 0x0D };
            PreauthIntegrityNegotiateContext originalContext = new PreauthIntegrityNegotiateContext(mockConfig, null, originalSalt);

            int encoded = originalContext.encode(buffer, 0);

            samr.SamrGetMembersInAlias message = new samr.SamrGetMembersInAlias(mockPolicyHandle, mockLsarSidArray);

            // Then: Should have correct values
            assertEquals(0x21, message.getOpnum());
            assertEquals(mockPolicyHandle, message.alias_handle);
            assertEquals(mockLsarSidArray, message.sids);
        }

        @Test

    /**
     * A file with this bit on as returned by {@code getAttributes()} or set
     * with {@code setAttributes()} is an archived file
     */
    public static final int ATTR_ARCHIVE = 0x20;

    // 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;

    val buffer = Buffer()
    buffer.writeUtf8CodePoint(0x89)
    buffer.writeUtf8CodePoint(0x50)
    buffer.writeUtf8CodePoint(0x4e)
    buffer.writeUtf8CodePoint(0x47)
    buffer.writeUtf8CodePoint(0x0d)
    buffer.writeUtf8CodePoint(0x0a)
    buffer.writeUtf8CodePoint(0x1a)
    buffer.writeUtf8CodePoint(0x0a)
    server.enqueue(
      MockResponse
        .Builder()
        .body(buffer)

            try (MockedStatic<Smb3KeyDerivation> mockedKeyDerivation = mockStatic(Smb3KeyDerivation.class)) {
                byte[] derivedKey = new byte[16];
                Arrays.fill(derivedKey, (byte) 0xDD);
                mockedKeyDerivation.when(
                        () -> Smb3KeyDerivation.deriveSigningKey(eq(Smb2Constants.SMB2_DIALECT_0302), any(byte[].class), any(byte[].class)))

	//TODO LDTR -0xe5(R3), R10                 // 6ab851f8
	//TODO LDTRB 0xf0(R13), R10                // aa094f38
	//TODO LDTRH 0xe8(R13), R23                // b7894e78
	//TODO LDTRSB -0x24(R20), R5               // 85cadd38
	//TODO LDTRSB -0x75(R9), R13               // 2db99838
	//TODO LDTRSH 0xef(R3), LR                 // 7ef8ce78
	//TODO LDTRSH 0x96(R19), R24               // 786a8978

	r13 := new(rot13Reader)
	r13.r = r
	return r13
}

func (r13 *rot13Reader) Read(p []byte) (int, error) {
	n, err := r13.r.Read(p)
	for i := 0; i < n; i++ {
		c := p[i] | 0x20 // lowercase byte
		if 'a' <= c && c <= 'm' {
			p[i] += 13
		} else if 'n' <= c && c <= 'z' {
			p[i] -= 13
		}
	}
	return n, err
}

// Call ReadByte to accumulate the text of a file

    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a b", "c")
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0x20 at 1 in header name: a b")
    }
  }

  @Test
  fun requestHeaderNameWithTabForbidden() {
    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a\tb", "c")