// In the process we made one successful connection attempt.
    assertThat(listener.recordedEventTypes().filter { it == "ConnectStart" }).hasSize(1)
    assertThat(listener.recordedEventTypes().filter { it == "ConnectFailed" }).hasSize(0)
  }

  @Test
  fun callIpv6WhenBothServersAreReachable() {
    // Flip DNS results to prefer IPv6.
    dnsResults =
      listOf(
        localhostIpv6,
        localhostIpv4,

    poolConnectionListener.connectStart(route, call)
  }

  override fun connectFailed(
    route: Route,
    protocol: Protocol?,
    e: IOException,
  ) {
    eventListener.connectFailed(call, route.socketAddress, route.proxy, null, e)
    poolConnectionListener.connectFailed(route, call, e)
  }

  override fun secureConnectStart() {
    eventListener.secureConnectStart(call)
  }

    delegate.connectEnd(call, inetSocketAddress, proxy, protocol)
  }

  override fun connectFailed(
    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,
    ioe: IOException,
  ) {
    logWithTime("connectFailed: $protocol $ioe")

    delegate.connectFailed(call, inetSocketAddress, proxy, protocol, ioe)
  }

  override fun connectionAcquired(

      if (route.address.proxy == null && route.proxy.type() != Proxy.Type.DIRECT) {
        route.address.proxySelector.connectFailed(
          route.address.url.toUri(),
          route.proxy.address(),
          e,
        )
      }
      user.connectFailed(route, null, e)
      return ConnectResult(plan = this, throwable = e)
    } finally {
      user.removePlanToCancel(this)

 */
object NullProxySelector : ProxySelector() {
  override fun select(uri: URI?): List<Proxy> {
    requireNotNull(uri) { "uri must not be null" }
    return listOf(Proxy.NO_PROXY)
  }

  override fun connectFailed(
    uri: URI?,
    sa: SocketAddress?,
    ioe: IOException?,
  ) {
  }

    route: Route,
    call: Call,
  ) = logEvent(ConnectionEvent.ConnectStart(System.nanoTime(), route, call))

  override fun connectFailed(
    route: Route,
    call: Call,
    failure: IOException,
  ) = logEvent(
    ConnectionEvent.ConnectFailed(System.nanoTime(), route, call, failure),
  )

  override fun connectEnd(
    connection: Connection,
    route: Route,
    call: Call,

    protocol: Protocol?,
  ) = logEvent(ConnectEnd(System.nanoTime(), call, inetSocketAddress, proxy, protocol))

  override fun connectFailed(
    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,
    ioe: IOException,
  ) = logEvent(ConnectFailed(System.nanoTime(), call, inetSocketAddress, proxy, protocol, ioe))

  override fun connectionAcquired(
    call: Call,

    assertThat(connectStart.proxy).isEqualTo(Proxy.NO_PROXY)
    val connectFailed = listener.removeUpToEvent<CallEvent.ConnectFailed>()
    assertThat(connectFailed.call).isSameAs(call)
    assertThat(connectFailed.inetSocketAddress).isEqualTo(expectedAddress)
    assertThat(connectFailed.protocol).isNull()
    assertThat(connectFailed.ioe).isNotNull()
  }

  @Test
  fun multipleConnectsForSingleCall() {

  internal fun connectFailed(
    client: OkHttpClient,
    failedRoute: Route,
    failure: IOException,
  ) {
    // Tell the proxy selector when we fail to connect on a fresh connection.
    if (failedRoute.proxy.type() != Proxy.Type.DIRECT) {
      val address = failedRoute.address
      address.proxySelector.connectFailed(
        address.url.toUri(),

    return proxies
  }

  fun assertRequests(vararg expectedUris: URI?) {
    assertThat(requestedUris).containsExactly(*expectedUris)
    requestedUris.clear()
  }

  override fun connectFailed(
    uri: URI,
    sa: SocketAddress,
    ioe: IOException,
  ) {
    val socketAddress = sa as InetSocketAddress
    failures.add(format("%s %s:%d %s", uri, socketAddress, socketAddress.port, ioe.message!!))
  }