/** Initialized in [callStart]. */
  private var callStackTrace: Any? = null

  /** Finds an exchange to send the next request and receive the next response. */
  private var exchangeFinder: ExchangeFinder? = null

  var connection: RealConnection? = null
    private set
  private var timeoutEarlyExit = false

  /**

    @JvmField var associatedStreamId = 0

    @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

        RealConnection(
          taskRunner = taskRunner,
          connectionPool = connectionPool,
          route = route,
          rawSocket = null,
          socket = socket,
          handshake = null,
          protocol = null,
          source = null,
          sink = null,
          pingIntervalMillis = 0,
          ConnectionListener.NONE,
        )
      result.idleAtNs = idleAtNs
      return result
    }

      if (!logHeaders && requestBody != null) {
        requestStartMessage += " (${requestBody.contentLength()}-byte body)"
      }
      logger.log(requestStartMessage)

      if (logHeaders) {
        val headers = request.headers

        if (requestBody != null) {

        return emptyList()
      }

    var cookies: MutableList<Cookie>? = null
    for ((key, value) in cookieHeaders) {
      if (("Cookie".equals(key, ignoreCase = true) || "Cookie2".equals(key, ignoreCase = true)) &&
        value.isNotEmpty()
      ) {
        for (header in value) {
          if (cookies == null) cookies = mutableListOf()
          cookies.addAll(decodeHeaderAsJavaNetCookies(url, header))
        }

  private const val SKEW = 38
  private const val DAMP = 700
  private const val INITIAL_BIAS = 72
  private const val INITIAL_N = 0x80

  /**
   * Returns null if any label is oversized so much that the encoder cannot encode it without
   * integer overflow. This will not return null for labels that fit within the DNS size
   * limits.
   */
  fun encode(string: String): String? {
    var pos = 0
    val limit = string.length

  @JvmStatic
  fun createFactory(callFactory: Call.Factory): EventSource.Factory {
    return EventSource.Factory { request, listener ->
      val actualRequest =
        if (request.header("Accept") == null) {
          request.newBuilder().addHeader("Accept", "text/event-stream").build()
        } else {
          request
        }

      RealEventSource(actualRequest, listener).apply {
        connect(callFactory)

 *  Fix: Don't permit cache iterators to remove entries that are being written.


## Version 4.0.1

_2019-07-10_

 *  Fix: Tolerate null-hostile lists in public API. Lists created with `List.of(...)` don't like it
    when you call `contains(null)` on them!
 *  Fix: Retain binary-compatibility in `okhttp3.internal.HttpHeaders.hasBody()`. Some unscrupulous
    coders call this and we don't want their users to suffer.

      ImportResults(sortedRules, sortedExceptionRules, totalRuleBytes, totalExceptionRuleBytes)
    }

  private fun String.toRule(): ByteString? {
    if (trim { it <= ' ' }.isEmpty() || startsWith("//")) return null
    if (contains(WILDCARD_CHAR)) {
      assertWildcardRule(this)
    }
    return encodeUtf8()
  }

  data class ImportResults(
    val sortedRules: SortedSet<ByteString>,

  private var rawSocket: Socket? = null

  /**
   * The application layer socket. Either an [SSLSocket] layered over [rawSocket], or [rawSocket]
   * itself if this connection does not use SSL.
   */
  internal var socket: Socket? = null
  private var handshake: Handshake? = null
  private var protocol: Protocol? = null
  private var source: BufferedSource? = null
  private var sink: BufferedSink? = null