*  Fix: Don't include [Assertk][assertk] in OkHttp's production dependencies. This regression was
    introduced in the 5.0.0-alpha.4 release.
 *  Fix: Don't ask `Dns` implementations to resolve strings that are already IP addresses.
 *  Fix: Change fast fallback to race TCP handshakes only. To avoid wasted work, OkHttp will not
    attempt multiple TLS handshakes for the same call concurrently.

    val dns = FakeDns()
    val ipAddresses = mutableListOf<InetAddress>()
    dns["android.com"] = ipAddresses
    client =
      client.newBuilder()
        .dns(dns)
        .build()
    server.enqueue(MockResponse())
    val request = Request(server.url("/").newBuilder().host("android.com").build())
    executeSynchronously(request).assertFailure("$dns returned no addresses for android.com")

    response: Response,
    hostname: String,
    results: MutableList<InetAddress>,
    failures: MutableList<Exception>,
  ) {
    try {
      val addresses = readResponse(hostname, response)
      synchronized(results) {
        results.addAll(addresses)
      }
    } catch (e: Exception) {
      synchronized(failures) {
        failures.add(e)
      }
    }
  }

  private val addressA = factory.newAddress("a")
  private val routeA1 = factory.newRoute(addressA)
  private val addressB = factory.newAddress("b")
  private val routeB1 = factory.newRoute(addressB)
  private val addressC = factory.newAddress("c")
  private val routeC1 = factory.newRoute(addressC)

  @AfterEach fun tearDown() {
    factory.close()
    peer.close()
  }

      proxySelector = proxySelector,
    )
  }

  fun newRoute(
    address: Address = newAddress(),
    proxy: Proxy = this.proxy,
    socketAddress: InetSocketAddress = InetSocketAddress.createUnresolved(uriHost, uriPort),
  ): Route {
    return Route(
      address = address,
      proxy = proxy,
      socketAddress = socketAddress,
    )
  }

  private fun connectTls(
    sslSocket: SSLSocket,
    connectionSpec: ConnectionSpec,
  ) {
    val address = route.address
    var success = false
    try {
      if (connectionSpec.supportsTlsExtensions) {
        Platform.get().configureTlsExtensions(sslSocket, address.url.host, address.protocols)
      }

      // Force handshake. This can throw!
      sslSocket.startHandshake()

      ),
    )
    dns = buildLocalhost(bootstrapClient, true)
    val result = dns.lookup("google.com")
    assertThat(result.size).isEqualTo(2)
    assertThat(result).contains(address("157.240.1.18"))
    assertThat(result).contains(address("2a03:2880:f029:11:face:b00c:0:2"))
    val request1 = server.takeRequest()
    assertThat(request1.method).isEqualTo("GET")
    val request2 = server.takeRequest()

 * ```
 *
 * The [CacheControl] class can configure request caching directives and parse response caching
 * directives. It even offers convenient constants [CacheControl.FORCE_NETWORK] and
 * [CacheControl.FORCE_CACHE] that address the use cases above.
 *
 * [rfc_7234]: http://tools.ietf.org/html/rfc7234
 */
class Cache internal constructor(
  directory: Path,
  maxSize: Long,
  fileSystem: FileSystem,
  taskRunner: TaskRunner,

 */
package okhttp3.internal.connection

import okhttp3.Route

/**
 * A denylist of failed routes to avoid when creating a new connection to a target address. This is
 * used so that OkHttp can learn from its mistakes: if there was a failure attempting to connect to
 * a specific IP address or proxy server, that failure is remembered and alternate routes are
 * preferred.
 */
class RouteDatabase {

      start()
    } catch (e: IOException) {
      throw RuntimeException(e)
    }
  }

  fun toProxyAddress(): Proxy {
    before()
    val address = InetSocketAddress(_inetSocketAddress!!.address.hostName, port)
    return Proxy(Proxy.Type.HTTP, address)
  }

  /**
   * Returns a URL for connecting to this server.
   *
   * @param path the request path, such as "/".
   */