*
 * @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 {
  @RequiresApi(Build.VERSION_CODES.Q)
  internal val resolver = DnsResolver.getInstance()
  private val executor = Executors.newSingleThreadExecutor()

  class CustomSSLSocketFactory(
    delegate: SSLSocketFactory,
  ) : DelegatingSSLSocketFactory(delegate) {
    override fun configureSocket(sslSocket: SSLSocket): SSLSocket {
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        val parameters = sslSocket.sslParameters
        Log.d("CustomSSLSocketFactory", "old applicationProtocols: $parameters.applicationProtocols")
        parameters.applicationProtocols = arrayOf("x-amzn-http-ca")

    class CustomSSLSocketFactory(
      delegate: SSLSocketFactory,
    ) : DelegatingSSLSocketFactory(delegate) {
      override fun configureSocket(sslSocket: SSLSocket): SSLSocket {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
          val parameters = sslSocket.sslParameters
          val sni = parameters.serverNames
          Log.d("CustomSSLSocketFactory", "old SNI: $sni")

      .heldCertificate(heldCertificate)
      .addTrustedCertificate(heldCertificate.certificate)
      .build()
  }

  @Before
  fun init() {
    assumeTrue("Supported on API 29+", Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)

    client =
      OkHttpClient.Builder()
        .dns(AsyncDns.toDns(AndroidAsyncDns.IPv4, AndroidAsyncDns.IPv6))
        .sslSocketFactory(localhost.sslSocketFactory(), localhost.trustManager)
        .build()

      // Try another way.
    }

    try {
      int version = (int) Class.forName("android.os.Build$VERSION").getField("SDK_INT").get(null);
      int jellyBean =
          (int) Class.forName("android.os.Build$VERSION_CODES").getField("JELLY_BEAN").get(null);
      /*
       * I assume that this check can't fail because JELLY_BEAN will be present only if we're
       * running under Jelly Bean or higher. But it seems safest to check.
       */