attempt: Int = this.attempt,
    tunnelRequest: Request? = this.tunnelRequest,
    connectionSpecIndex: Int = this.connectionSpecIndex,
    isTlsFallback: Boolean = this.isTlsFallback,
  ): ConnectPlan =
    ConnectPlan(
      taskRunner = taskRunner,
      connectionPool = connectionPool,
      readTimeoutMillis = readTimeoutMillis,
      writeTimeoutMillis = writeTimeoutMillis,

) : ConnectionUser {
  private val eventListener: EventListener
    get() = call.eventListener

  override fun addPlanToCancel(connectPlan: ConnectPlan) {
    call.plansToCancel += connectPlan
  }

  override fun removePlanToCancel(connectPlan: ConnectPlan) {
    call.plansToCancel -= connectPlan
  }

  override fun updateRouteDatabaseAfterSuccess(route: Route) {
    call.client.routeDatabase.connected(route)
  }

 * without an intent to immediately use them.
 */
object PoolConnectionUser : ConnectionUser {
  override fun addPlanToCancel(connectPlan: ConnectPlan) {
  }

  override fun removePlanToCancel(connectPlan: ConnectPlan) {
  }

  override fun updateRouteDatabaseAfterSuccess(route: Route) {
  }

  override fun connectStart(route: Route) {
  }

    }
    return null
  }

  /** Plans to make a new connection by deciding which route to try next. */
  @Throws(IOException::class)
  internal fun planConnect(): ConnectPlan {
    // Use a route from a preceding coalesced connection.
    val localNextRouteToTry = nextRouteToTry
    if (localNextRouteToTry != null) {
      nextRouteToTry = null