val request = Request(server.url("/"))

    val response = client.newCall(request).execute()

    response.use {
      assertEquals(200, response.code)
      assertEquals(TlsVersion.TLS_1_3, response.handshake?.tlsVersion)
      assertEquals(Protocol.HTTP_2, response.protocol)

      assertThat(response.exchangeAccessor!!.connectionAccessor.socket())
        .isInstanceOf<SSLSocketImpl>()
    }
  }

  @Test

   * connection the socket may be shared by multiple concurrent calls.
   */
  fun socket(): Socket

  /**
   * Returns the TLS handshake used to establish this connection, or null if the connection is not
   * HTTPS.
   */
  fun handshake(): Handshake?

  /**
   * Returns the protocol negotiated by this connection, or [Protocol.HTTP_1_1] if no protocol

      printEvent("connectStart");
    }

    @Override public void secureConnectStart(Call call) {
      printEvent("secureConnectStart");
    }

    @Override public void secureConnectEnd(Call call, Handshake handshake) {
      printEvent("secureConnectEnd");
    }

    @Override public void connectEnd(
        Call call, InetSocketAddress inetSocketAddress, Proxy proxy, Protocol protocol) {
      printEvent("connectEnd");

  fun removePlanToCancel(connectPlan: ConnectPlan)

  fun updateRouteDatabaseAfterSuccess(route: Route)

  fun connectStart(route: Route)

  fun secureConnectStart()

  fun secureConnectEnd(handshake: Handshake?)

  fun callConnectEnd(
    route: Route,
    protocol: Protocol?,
  )

  fun connectionConnectEnd(
    connection: Connection,
    route: Route,
  )

  fun connectFailed(

	public fun toString ()Ljava/lang/String;
}

public final class okhttp3/Handshake$Companion {
	public final fun -deprecated_get (Ljavax/net/ssl/SSLSession;)Lokhttp3/Handshake;
	public final fun get (Ljavax/net/ssl/SSLSession;)Lokhttp3/Handshake;
	public final fun get (Lokhttp3/TlsVersion;Lokhttp3/CipherSuite;Ljava/util/List;Ljava/util/List;)Lokhttp3/Handshake;
}

    logWithTime("secureConnectStart")

    delegate.secureConnectStart(call)
  }

  override fun secureConnectEnd(
    call: Call,
    handshake: Handshake?,
  ) {
    logWithTime("secureConnectEnd: $handshake")

    delegate.secureConnectEnd(call, handshake)
  }

  override fun connectEnd(
    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,

    .build();
```

### Debugging TLS Handshake Failures

The TLS handshake requires clients and servers to share a common TLS version and cipher suite. This
depends on the JVM or Android version, OkHttp version, and web server configuration. If there is no
common cipher suite and TLS version, your call will fail like this:

```
Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x7f2719a89e80:

  private val retryableException = SSLHandshakeException("Simulated handshake exception")

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  private var client = clientTestRule.newClient()

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

  @Test fun nonRetryableIOException() {
    val exception = IOException("Non-handshake exception")
    assertThat(retryTlsHandshake(exception)).isFalse()
  }

<img src="/img/deployment/https/https01.drawio.svg">

### TLS Handshake Start { #tls-handshake-start }

The browser would then communicate with that IP address on **port 443** (the HTTPS port).

      printEvent("connectStart");
    }

    @Override public void secureConnectStart(Call call) {
      printEvent("secureConnectStart");
    }

    @Override public void secureConnectEnd(Call call, Handshake handshake) {
      printEvent("secureConnectEnd");
    }

    @Override public void connectEnd(
        Call call, InetSocketAddress inetSocketAddress, Proxy proxy, Protocol protocol) {
      printEvent("connectEnd");