val flags = buf.readShort().toInt() and 0xffff
    require(flags shr 15 != 0) { "not a response" }

    val responseCode = flags and 0xf

    if (responseCode == NXDOMAIN) {
      throw UnknownHostException("$hostname: NXDOMAIN")
    } else if (responseCode == SERVFAIL) {
      throw UnknownHostException("$hostname: SERVFAIL")
    }

    val questionCount = buf.readShort().toInt() and 0xffff

      val byte0 = tagClass or constructedBit or tag.toInt()
      sink.writeByte(byte0)
    } else {
      val byte0 = tagClass or constructedBit or 0b0001_1111
      sink.writeByte(byte0)
      writeVariableLengthLong(tag)
    }

    // Write the length. This takes 1 byte if length is less than 128.
    val length = content.size
    if (length < 128) {
      sink.writeByte(length.toInt())
    } else {

        case 15:
          k2 ^= (long) toInt(bb.get(14)) << 48; // fall through
        case 14:
          k2 ^= (long) toInt(bb.get(13)) << 40; // fall through
        case 13:
          k2 ^= (long) toInt(bb.get(12)) << 32; // fall through
        case 12:
          k2 ^= (long) toInt(bb.get(11)) << 24; // fall through
        case 11:
          k2 ^= (long) toInt(bb.get(10)) << 16; // fall through
        case 10:

  val notAfter: Long,
) {
  // Avoid Long.hashCode(long) which isn't available on Android 5.
  override fun hashCode(): Int {
    var result = 0
    result = 31 * result + notBefore.toInt()
    result = 31 * result + notAfter.toInt()
    return result
  }
}

internal data class SubjectPublicKeyInfo(
  val algorithm: AlgorithmIdentifier,
  val subjectPublicKey: BitString,
)

  override fun hashCode(): Int {
    var result = 0
    result = 31 * result + tagClass
    result = 31 * result + tag.toInt()
    result = 31 * result + (if (constructed) 0 else 1)
    result = 31 * result + length.toInt()
    result = 31 * result + bytes.hashCode()
    return result
  }

    -> TYPE_VALID

    TYPE_DISALLOWED -> TYPE_DISALLOWED

    else -> error("unexpected type: $type")
  }
}

internal infix fun Byte.and(mask: Int): Int = toInt() and mask

internal infix fun Short.and(mask: Int): Int = toInt() and mask

      addCode(i, CODES[i], CODE_BIT_COUNTS[i].toInt())
    }
  }

  @Throws(IOException::class)
  fun encode(
    source: ByteString,
    sink: BufferedSink,
  ) {
    var accumulator = 0L
    var accumulatorBitCount = 0

    for (i in 0 until source.size) {
      val symbol = source[i] and 0xff
      val code = CODES[symbol]
      val codeBitCount = CODE_BIT_COUNTS[symbol].toInt()

  val ideaVersionString = System.getProperty("idea.version") ?: return false

  return try {
    val (major, minor, _) = ideaVersionString.split(".", limit = 3)
    KotlinVersion(major.toInt(), minor.toInt()) < KotlinVersion(2023, 2)
  } catch (e: Exception) {
    false // Unknown version, presumably compatible.
  }

          mappedTo.writeUtf8CodePoint(readHexadecimalUnsignedLong().toInt())
        }
      }

      TYPE_DISALLOWED, TYPE_DISALLOWED_STD3_VALID, TYPE_IGNORED, TYPE_VALID -> Unit

      else -> throw IOException("unexpected type")
    }

    skipRestOfLine()

    result +=
      Mapping(
        sourceCodePoint0.toInt(),
        sourceCodePoint1.toInt(),
        type,
        mappedTo.readByteString(),

  override fun hashCode(): Int {
    var result = 0
    result = 31 * result + tagClass
    result = 31 * result + tag.toInt()
    result = 31 * result + (if (constructed) 0 else 1)
    result = 31 * result + length.toInt()
    return result
  }

  override fun toString(): String = "$tagClass/$tag"

  companion object {
    const val TAG_CLASS_UNIVERSAL = 0b0000_0000