return source.readByte().toInt() != 0
  }

  fun readBigInteger(): BigInteger {
    if (bytesLeft == 0L) throw ProtocolException("unexpected length: $bytesLeft at $this")
    val byteArray = source.readByteArray(bytesLeft)
    return BigInteger(byteArray)
  }

  fun readLong(): Long {
    if (bytesLeft !in 1..8) throw ProtocolException("unexpected length: $bytesLeft at $this")

        val firSymbol = useSiteSession.symbolProvider.getTopLevelCallableSymbols(kotlinPackage, identifier).firstOrNull {
            /* choose (for byte array)
             * public fun byteArrayOf(vararg elements: kotlin.Byte): kotlin.ByteArray
             */
            (it as? FirFunctionSymbol<*>)?.fir?.valueParameters?.singleOrNull()?.isVararg == true
        } as? FirNamedFunctionSymbol ?: return null

      val ttl = buf.readInt().toLong() and 0xffffffffL // ttl
      val length = buf.readShort().toInt() and 0xffff

      if (type == TYPE_A || type == TYPE_AAAA) {
        val bytes = ByteArray(length)
        buf.read(bytes)
        result.add(InetAddress.getByAddress(bytes))
      } else {
        buf.skip(length.toLong())
      }
    }

    return result
  }

      return buffer.asResponseBody(finalContentType, buffer.size)
    }

    /** Returns a new response body that transmits this byte array. */
    @JvmStatic
    @JvmName("create")
    fun ByteArray.toResponseBody(contentType: MediaType? = null): ResponseBody = commonToResponseBody(contentType)

    /** Returns a new response body that transmits this byte string. */
    @JvmStatic
    @JvmName("create")

    assertThat(callFailed.ioe).isNotNull()
    assertThat(request.ioe).isNotNull()
  }

  private inner class NonCompletingRequestBody : RequestBody() {
    private val chunk: ByteArray? = ByteArray(1024 * 1024)
    var ioe: IOException? = null

    override fun contentType(): MediaType? {
      return "text/plain".toMediaType()
    }

    override fun contentLength(): Long {

    peer.sendFrame().data(false, 3, Buffer().write(ByteArray(dataLength)), dataLength)
    peer.sendFrame().data(false, 3, Buffer().write(ByteArray(dataLength)), dataLength)
    peer.sendFrame().data(false, 3, Buffer().write(ByteArray(dataLength)), dataLength)
    peer.sendFrame().data(false, 3, Buffer().write(ByteArray(dataLength)), dataLength)
    peer.sendFrame().data(false, 3, Buffer().write(ByteArray(1)), 1)

  /** Used when an empty close frame was received (i.e., without a status code). */
  internal const val CLOSE_NO_STATUS_CODE = 1005

  fun toggleMask(
    cursor: Buffer.UnsafeCursor,
    key: ByteArray,
  ) {
    var keyIndex = 0
    val keyLength = key.size
    do {
      val buffer = cursor.data
      var i = cursor.start
      val end = cursor.end
      if (buffer != null) {

): MatchResult? {
  val candidate = find(input, index) ?: return null
  if (candidate.range.first != index) return null // Didn't match where it should have.
  return candidate
}

@JvmField
val EMPTY_BYTE_ARRAY: ByteArray = ByteArray(0)

/** Byte order marks. */
internal val UNICODE_BOMS =
  Options.of(
    // UTF-8.
    "efbbbf".decodeHex(),
    // UTF-16BE.
    "feff".decodeHex(),
    // UTF-16LE.
    "fffe".decodeHex(),

    @JvmField var errorCode: ErrorCode? = null

    @JvmField var windowSizeIncrement: Long = 0

    @JvmField var headerBlock: List<Header>? = null

    @JvmField var data: ByteArray? = null

    @JvmField var settings: Settings? = null

    @JvmField var ack = false

    @JvmField var payload1 = 0

    @JvmField var payload2 = 0

    override fun settings(

    assertThat(actual).isEqualTo(expected)
  }

  companion object {
    private fun binaryData(length: Int): ByteString {
      val junk = ByteArray(length)
      Random(0).nextBytes(junk)
      return junk.toByteString()
    }
  }