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

  /**
   * This is the same value as [exchange], but scoped to the execution of the network interceptors.

HSPLokhttp3/internal/connection/RealConnection;->isMultiplexed$okhttp()Z
HSPLokhttp3/internal/connection/RealConnection;->onSettings(Lokhttp3/internal/http2/Http2Connection;Lokhttp3/internal/http2/Settings;)V
HSPLokhttp3/internal/connection/RealConnection;->start()V
HSPLokhttp3/internal/connection/RealConnectionPool$cleanupTask$1;-><init>(Lokhttp3/internal/connection/RealConnectionPool;Ljava/lang/String;)V

   * successfully or all plans fail.
   */
  private val connectResults = taskRunner.backend.decorate(LinkedBlockingDeque<ConnectResult>())

  override fun find(): RealConnection {
    var firstException: IOException? = null
    try {
      while (tcpConnectsInFlight.isNotEmpty() || routePlanner.hasNext()) {
        if (routePlanner.isCanceled()) throw IOException("Canceled")

        }

        return null
      }

      HTTP_MISDIRECTED_REQUEST -> {
        // OkHttp can coalesce HTTP/2 connections even if the domain names are different. See
        // RealConnection.isEligible(). If we attempted this and the server returned HTTP 421, then
        // we can retry on a different connection.
        val requestBody = userResponse.request.body

    )
    val connections: MutableList<RealConnection?> = ArrayList()
    val localClient =
      client.newBuilder().eventListener(
        object : EventListener() {
          override fun connectionAcquired(
            call: Call,
            connection: Connection,
          ) {
            connections.add(connection as RealConnection)
          }
        },
      ).build()

 * **RealConnectionPool** manages reuse of HTTP and HTTP/2 connections for reduced latency. Every OkHttpClient has one, and its lifetime spans the lifetime of the OkHttpClient.

 * **RealConnection** is the socket and streams of an HTTP/1 or HTTP/2 connection. These are created on demand to fulfill HTTP requests. They may be reused for many HTTP request/response exchanges. Their lifetime is typically shorter than a connection pool.