internal fun canonicalizeInetAddress(address: ByteArray): ByteArray =
  when {
    isMappedIpv4Address(address) -> address.sliceArray(12 until 16)
    else -> address
  }

/** Returns true for IPv6 addresses like `0000:0000:0000:0000:0000:ffff:XXXX:XXXX`. */
private fun isMappedIpv4Address(address: ByteArray): Boolean {
  if (address.size != 16) return false

  for (i in 0 until 10) {
    if (address[i] != 0.toByte()) return false
  }

	// that fails and replaced ever char through numbers to anonymize the sample.
	longName := "/0000_0000000/00000-000000000/0000_0000000/00000-0000000000000/0000_0000000/00000-0000000-00000000/0000_0000000/00000000/0000_0000000/000/0000_0000000/00000000v00/0000_0000000/000000/0000_0000000/0000000/0000_0000000/00000y-00/0000/0000/00000000/0x000000/"
	hdr.Name = longName

	hdr.Size = 0
	var buf bytes.Buffer
	writer := NewWriter(&buf)

 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 00 00 c0 a8 00 01}
 *   <dt>An IPv6 "IPv4 mapped" address, {@code "::ffff:192.168.0.1"}.
 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 ff ff c0 a8 00 01}
 * </dl>
 *
 * <p>A few notes about IPv6 "IPv4 mapped" addresses and their observed use in Java.
 *

 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 00 00 c0 a8 00 01}
 *   <dt>An IPv6 "IPv4 mapped" address, {@code "::ffff:192.168.0.1"}.
 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 ff ff c0 a8 00 01}
 * </dl>
 *
 * <p>A few notes about IPv6 "IPv4 mapped" addresses and their observed use in Java.
 *

      .isEqualTo(MAX_DATE)
    assertThat(parseCookie(9223372036854773807L, url, "a=b; Max-Age=3")!!.expiresAt)
      .isEqualTo(MAX_DATE)
    assertThat(parseCookie(50000L, url, "a=b; Max-Age=10000000000000000000")!!.expiresAt)
      .isEqualTo(MAX_DATE)
  }

  @Test fun maxAgeNonPositive() {
    assertThat(parseCookie(50000L, url, "a=b; Max-Age=-1")!!.expiresAt)
      .isEqualTo(Long.MIN_VALUE)

used in this package, the denominator v // is never zero. { decodeHex("00000000000000000000"), decodeHex("00000000000000000000"), 1, decodeHex("00000000000000000000"), }, // 0/1 == 0² { decodeHex("00000000000000000000"), decodeHex("01000000000000000000"), 1, decodeHex("00000000000000000000"), }, // If u is non-zero and v is zero, defined to return (0, FALSE). { decodeHex("01000000000000000000"), decodeHex("00000000000000000000"), 0, decodeHex("00000000000000000000"), }, // 2/1 is not square in this...

    assertInvalid(
      "http://[0000::0000:0000:0000:0000::0001]",
      "Invalid URL host: \"[0000::0000:0000:0000:0000::0001]\"",
    )
    assertInvalid(
      "http://[::0000:0000:0000:0000::0001]",
      "Invalid URL host: \"[::0000:0000:0000:0000::0001]\"",
    )
  }

  @Test
  fun hostIpv6ScopedAddress() {
    // java.net.InetAddress parses scoped addresses. These aren't valid in URLs.

    1000000000L,
    10000000000L,
    100000000000L,
    1000000000000L,
    10000000000000L,
    100000000000000L,
    1000000000000000L,
    10000000000000000L,
    100000000000000000L,
    1000000000000000000L
  };

  // halfPowersOf10[i] = largest long less than 10^(i + 0.5)
  @GwtIncompatible // TODO
  @VisibleForTesting
  static final long[] halfPowersOf10 = {
    3L,
    31L,
    316L,