/** 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

  /**

        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) {

 *  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.

  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

    }

    if (requestMethod != "GET") {
      // Don't cache non-GET responses. We're technically allowed to cache HEAD requests and some
      // POST requests, but the complexity of doing so is high and the benefit is low.
      return null
    }

    if (response.hasVaryAll()) {
      return null
    }

    val entry = Entry(response)
    var editor: DiskLruCache.Editor? = null
    try {

   */
  @Test fun proxySelectorNotCalledForNullHost() {
    // The string '>' is okay in a hostname in HttpUrl, which does very light hostname validation.
    // It is not okay in URI, and so it's stripped and we get a URI with a null host.
    val bogusHostname = ">"
    val address =
      factory.newAddress(
        uriHost = bogusHostname,
        uriPort = uriPort,
      )
    val routeSelector = newRouteSelector(address)

  private val applicationLogs = LogRecorder()
  private val applicationInterceptor = HttpLoggingInterceptor(applicationLogs)
  private var extraNetworkInterceptor: Interceptor? = null

  private fun setLevel(level: Level) {
    networkInterceptor.setLevel(level)
    applicationInterceptor.setLevel(level)
  }

  @BeforeEach
  fun setUp(server: MockWebServer) {
    this.server = server

    if (cacheCandidate != null && cacheResponse == null) {
      // The cache candidate wasn't applicable. Close it.
      cacheCandidate.body.closeQuietly()
    }

    // If we're forbidden from using the network and the cache is insufficient, fail.
    if (networkRequest == null && cacheResponse == null) {
      return Response.Builder()
        .request(chain.request())

  override fun toString(): String = commonToString()

  open class Builder {
    internal var url: HttpUrl? = null
    internal var method: String
    internal var headers: Headers.Builder
    internal var body: RequestBody? = null
    internal var cacheUrlOverride: HttpUrl? = null

    /** A mutable map of tags, or an immutable empty map if we don't have any. */
    internal var tags = mapOf<KClass<*>, Any>()