*/
package okhttp3.internal.connection

/** Reuse a connection from the pool. */
internal class ReusePlan(
  val connection: RealConnection,
) : RoutePlanner.Plan {
  override val isReady = true

  override fun connectTcp() = error("already connected")

  override fun connectTlsEtc() = error("already connected")

  override fun handleSuccess() = connection

    val index = serialTaskQueue.indexOfFirst { it.isReady() }
    if (index == -1) return null

    val nextTask = serialTaskQueue.removeAt(index)
    currentTask = nextTask
    contextSwitchCount++
    nextTask.start()
    return nextTask
  }

  private interface SerialTask {
    /** Returns true if this task is ready to start. */
    fun isReady() = true

    var firstException: IOException? = null
    while (true) {
      if (routePlanner.isCanceled()) throw IOException("Canceled")

      try {
        val plan = routePlanner.plan()

        if (!plan.isReady) {
          val tcpConnectResult = plan.connectTcp()
          val connectResult =
            when {
              tcpConnectResult.isSuccess -> plan.connectTlsEtc()
              else -> tcpConnectResult
            }

          cancelInFlightConnects()

          // Finish connecting. We won't have to if the winner is from the connection pool.
          if (!connectResult.plan.isReady) {
            connectResult = connectResult.plan.connectTlsEtc()
          }

          if (connectResult.isSuccess) {
            return connectResult.plan.handleSuccess()
          }
        }

 * proxy in a list, looking up a subsequent one may succeed.
 */
internal class FailedPlan(
  e: Throwable,
) : RoutePlanner.Plan {
  val result = RoutePlanner.ConnectResult(plan = this, throwable = e)

  override val isReady = false

  override fun connectTcp() = result

  override fun connectTlsEtc() = result

  override fun handleSuccess() = error("unexpected call")

  override fun cancel() = error("unexpected cancel")

  private lateinit var socket: BufferedSocket
  private var connection: RealConnection? = null

  /** True if this connection is ready for use, including TCP, tunnels, and TLS. */
  override val isReady: Boolean
    get() = protocol != null

  private fun copy(
    attempt: Int = this.attempt,
    tunnelRequest: Request? = this.tunnelRequest,
    connectionSpecIndex: Int = this.connectionSpecIndex,

        idleAtNanos = defaultConnectionIdleAtNanos,
      )
    var retry: FakePlan? = null
    var retryTaken = false
    var yieldBeforePlanReturns = false

    override val isReady: Boolean
      get() = connectState == ConnectState.TLS_CONNECTED

    var tcpConnectDelayNanos = 0L
    var tcpConnectThrowable: Throwable? = null
    var yieldBeforeTcpConnectReturns = false

   * These steps are split so callers can call [connectTcp] on a background thread if attempting
   * multiple plans concurrently.
   */
  interface Plan {
    val isReady: Boolean

    fun connectTcp(): ConnectResult

    fun connectTlsEtc(): ConnectResult

    fun handleSuccess(): RealConnection

    fun cancel()

    /**

        doExtensiveHealthChecks = doExtensiveHealthChecks,
        address = address,
        call = call,
        routes = routes,
        requireMultiplexed = planToReplace != null && planToReplace.isReady,
      ) ?: return null

    // If we coalesced our connection, remember the replaced connection's route. That way if the
    // coalesced connection later fails we don't waste a valid route.

HSPLokhttp3/internal/connection/ConnectPlan;->handleSuccess()Lokhttp3/internal/connection/RealConnection;
HSPLokhttp3/internal/connection/ConnectPlan;->isReady()Z
HSPLokhttp3/internal/connection/ConnectPlan;->nextConnectionSpec$okhttp(Ljava/util/List;Ljavax/net/ssl/SSLSocket;)Lokhttp3/internal/connection/ConnectPlan;