*  Fix: Don't crash with an `InaccessibleObjectException` when running on JDK17+ with strong
    encapsulation enabled.
 *  Fix: Strictly verify hostnames used with OkHttp's `HostnameVerifier`. Programs that make direct
    manual calls to `HostnameVerifier` could be defeated if the hostnames they pass in are not
    strictly ASCII. This issue is tracked as [CVE-2021-0341].


## Version 4.9.1

_2021-01-30_

    }
  }

  /** Returns true if [certificate] matches [hostname]. */
  private fun verifyHostname(
    hostname: String,
    certificate: X509Certificate,
  ): Boolean {
    val hostname = hostname.asciiToLowercase()
    return getSubjectAltNames(certificate, ALT_DNS_NAME).any {
      verifyHostname(hostname, it)
    }
  }

  /**

  /**
   * The maximum number of requests for each host to execute concurrently. This limits requests by
   * the URL's host name. Note that concurrent requests to a single IP address may still exceed this
   * limit: multiple hostnames may share an IP address or be routed through the same HTTP proxy.
   *
   * If more than [maxRequestsPerHost] requests are in flight when this is invoked, those requests
   * will remain in flight.
   *

   */
  var noNewExchanges = false

  /**
   * If true, this connection may not be used for coalesced requests. These are requests that could
   * share the same connection without sharing the same hostname.
   */
  private var noCoalescedConnections = false

  /**
   * The number of times there was a problem establishing a stream that could be due to route
   * chosen. Guarded by this.
   */

        this.protocols = Collections.unmodifiableList(protocolsCopy)
      }

    /**
     * Sets the verifier used to confirm that response certificates apply to requested hostnames for
     * HTTPS connections.
     *
     * If unset, a default hostname verifier will be used.
     */
    fun hostnameVerifier(hostnameVerifier: HostnameVerifier) =
      apply {
        if (hostnameVerifier != this.hostnameVerifier) {

            """
            |Hostname ${address.url.host} not verified:
            |    certificate: ${CertificatePinner.pin(cert)}
            |    DN: ${cert.subjectDN.name}
            |    subjectAltNames: ${OkHostnameVerifier.allSubjectAltNames(cert)}
            """.trimMargin(),
          )
        } else {
          throw SSLPeerUnverifiedException(
            "Hostname ${address.url.host} not verified (no certificates)",

            connectionUser = user,
          ),
          taskRunner,
        )
      },
    )
  }

  /** Returns an address that's without an SSL socket factory or hostname verifier.  */
  fun newAddress(
    uriHost: String = this.uriHost,
    uriPort: Int = this.uriPort,
    proxy: Proxy? = null,
    proxySelector: ProxySelector = this.proxySelector,
  ): Address {

   * https://github.com/square/okhttp/issues/5770
   */
  @Test fun proxySelectorNotCalledForNullHost() {
    // The string '>' is okay in a hostname in HttpUrl, which does very light hostname validation.
    // It is not okay in URI, and so it's stripped and we get a URI with a null host.
    val bogusHostname = ">"
    val address =
      factory.newAddress(

    server.enqueue(MockResponse())
    val cookieJar = RecordingCookieJar()
    cookieJar.enqueueRequestCookies(
      Cookie.Builder().name("a").value("b").domain(server.hostName).build(),
      Cookie.Builder().name("c").value("d").domain(server.hostName).build(),
    )
    client =
      client.newBuilder()
        .cookieJar(cookieJar)
        .build()
    executeSynchronously("/").assertCode(200)

        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )
        .hostnameVerifier(hostnameVerifier)
        .build()
    host = "${server.hostName}:${server.port}"
    url = server.url("/")
  }

  @Test
  fun levelGetter() {
    // The default is NONE.
    assertThat(applicationInterceptor.level).isEqualTo(Level.NONE)
    for (level in Level.entries) {