request = call.request(),
      connectTimeoutMillis = 10_000,
      readTimeoutMillis = 10_000,
      writeTimeoutMillis = 10_000,
    )
  }

  fun newRoutePlanner(
    client: OkHttpClient,
    address: Address = newAddress(),
  ): RealRoutePlanner {
    val call = RealCall(client, Request(address.url), forWebSocket = false)
    val chain = newChain(call)
    return RealRoutePlanner(

  private var server: MockWebServer? = null
  private val listener = RecordingConnectionListener()
  private val handshakeCertificates = localhost()

  open val fastFallback: Boolean get() = true

  private var client: OkHttpClient =
    clientTestRule.newClientBuilder()
      .connectionPool(ConnectionPool(connectionListener = listener))
      .fastFallback(fastFallback)
      .build()

  @BeforeEach
  fun setUp(server: MockWebServer?) {

import java.util.Random
import java.util.concurrent.TimeUnit
import java.util.concurrent.TimeUnit.MILLISECONDS
import okhttp3.Call
import okhttp3.Callback
import okhttp3.EventListener
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.WebSocket
import okhttp3.WebSocketListener
import okhttp3.internal.assertThreadHoldsLock
import okhttp3.internal.closeQuietly

import org.junit.jupiter.params.ParameterizedTest
import org.junit.jupiter.params.provider.ValueSource

class RouteFailureTest {
  private lateinit var socketFactory: SpecificHostSocketFactory
  private lateinit var client: OkHttpClient

  @RegisterExtension
  val platform = PlatformRule()

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  private lateinit var server1: MockWebServer

  private lateinit var serverIpv4: MockWebServer
  private lateinit var serverIpv6: MockWebServer

  private val listener = RecordingEventListener()
  private lateinit var client: OkHttpClient
  private lateinit var url: HttpUrl

  /**
   * This is mutable and order matters. By default, it contains [IPv4, IPv6]. Tests may manipulate
   * it to prefer IPv6.
   */

import mockwebserver3.SocketPolicy.DisconnectDuringResponseBody
import mockwebserver3.SocketPolicy.ShutdownServerAfterResponse
import okhttp3.Headers
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request
import okhttp3.TestUtil.assumeNotWindows
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates

import java.security.cert.CertificateFactory
import java.security.cert.X509Certificate
import javax.net.ssl.SSLSession
import javax.security.auth.x500.X500Principal
import okhttp3.FakeSSLSession
import okhttp3.OkHttpClient
import okhttp3.internal.canParseAsIpAddress
import okhttp3.internal.platform.Platform.Companion.isAndroid
import okhttp3.testing.PlatformRule
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Test

import mockwebserver3.RecordedRequest
import mockwebserver3.SocketPolicy
import mockwebserver3.SocketPolicy.KeepOpen
import mockwebserver3.SocketPolicy.NoResponse
import okhttp3.Interceptor
import okhttp3.OkHttpClient
import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol
import okhttp3.RecordingEventListener
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request
import okhttp3.Response

  val clientTestRule: OkHttpClientTestRule = OkHttpClientTestRule()

  private lateinit var server: MockWebServer
  private val handshakeCertificates = platform.localhostHandshakeCertificates()
  private var client: OkHttpClient = clientTestRule.newClient()

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

  @Test
  fun connectionsAreReused() {
    server.enqueue(MockResponse(body = "a"))

    server.enqueue(MockResponse(body = "def"))
    server.enqueue(MockResponse(body = "ghi"))
    client =
      OkHttpClient.Builder()
        .connectionPool(client.connectionPool)
        .proxy(server.toProxyAddress())
        .build()
    executeSynchronously("/a").assertBody("abc")
    client =
      OkHttpClient.Builder()
        .connectionPool(client.connectionPool)
        .proxy(server.toProxyAddress())
        .build()