import okhttp3.Address
import okhttp3.HttpUrl
import okhttp3.Route
import okhttp3.internal.canParseAsIpAddress
import okhttp3.internal.immutableListOf
import okhttp3.internal.toImmutableList

/**
 * Selects routes to connect to an origin server. Each connection requires a choice of proxy server,
 * IP address, and TLS mode. Connections may also be recycled.
 */
class RouteSelector(
  private val address: Address,

 * A or AAAA records, and returns the addresses or exception.
 *
 * Two instances must be used to get all results for an address.
 *
 * @param network network to use, if not selects the default network.
 */
@RequiresApi(Build.VERSION_CODES.Q)
@ExperimentalOkHttpApi
class AndroidAsyncDns(
  private val dnsClass: AsyncDns.DnsClass,
  private val network: Network? = null,
) : AsyncDns {

    ‘HTTP 103 Early Hints’.
 *  Fix: Read the response even if writing the request fails. This means you'll get a proper HTTP
    response even if the server rejects your request body.
 *  Fix: Use literal IP addresses directly rather than passing them to `DnsOverHttps`.
 *  Fix: Embed Proguard rules to prevent warnings from tools like DexGuard and R8. These warnings

    assertThat(routeSelector.hasNext()).isFalse()
    dns.assertRequests(bogusHostname)
    proxySelector.assertRequests() // No proxy selector requests!
  }

  @Test fun proxySelectorReturnsNull() {
    val nullProxySelector: ProxySelector =
      object : ProxySelector() {
        override fun select(uri: URI): List<Proxy>? {
          assertThat(uri.host).isEqualTo(uriHost)
          return null
        }

   * (unless they were already returned).
   *
   * The iterator supports [MutableIterator.remove]. Removing a URL from the iterator evicts the
   * corresponding response from the cache. Use this to evict selected responses.
   */
  @Throws(IOException::class)
  fun urls(): MutableIterator<String> {
    return object : MutableIterator<String> {
      private val delegate: MutableIterator<DiskLruCache.Snapshot> = cache.snapshots()

    executeSynchronously("/")
      .assertFailure(IOException::class.java)
  }

  @Test
  fun requestBodySurvivesRetries() {
    server.enqueue(MockResponse())

    // Enable a misconfigured proxy selector to guarantee that the request is retried.
    client =
      client.newBuilder()
        .proxySelector(
          FakeProxySelector()
            .addProxy(server2.toProxyAddress())

  }

  @Test
  fun protocolErrorBeforeCloseSendsFailure() {
    server.sink.write("0a00".decodeHex()).emit() // Invalid non-final ping frame.
    client.processNextFrame() // Detects error, send close, close connection.
    taskFaker.runTasks()
    client.webSocket!!.finishReader()
    assertThat(client.closed).isTrue()
    client.listener.assertFailure(
      ProtocolException::class.java,

    // If we have a routes left, use 'em.
    if (routeSelection?.hasNext() == true) return true

    // If we haven't initialized the route selector yet, assume it'll have at least one route.
    val localRouteSelector = routeSelector ?: return true

    // If we do have a route selector, use its routes.
    return localRouteSelector.hasNext()
  }

  /**

     * Sets the proxy selection policy to be used if no [proxy][proxy] is specified explicitly. The
     * proxy selector may return multiple proxies; in that case they will be tried in sequence until
     * a successful connection is established.
     *
     * If unset, the [system-wide default][ProxySelector.getDefault] proxy selector will be used.
     */
    fun proxySelector(proxySelector: ProxySelector) =
      apply {

    prefer the JDK’s precedence order.) This change may cause your HTTP calls to negotiate a
    different cipher suite than before! OkHttp's defaults cipher suites are selected for good
    security and performance.

 *  New: `ConnectionListener` publishes events for connects, disconnects, and use of pooled
    connections.