will use reflection to extract the `TrustManager` from the
    `SSLSocketFactory`.
 *  New: Support prerelease Java 9. This gets ALPN from the platform rather than
    relying on the alpn-boot bootclasspath override.
 *  New: `HttpLoggingInterceptor` now logs connection failures.
 *  New: Upgrade to Okio 1.8.0.

     ```xml
     <dependency>

     *
     * If multiple protocols are specified, [ALPN][alpn] will be used to negotiate a transport.
     * Protocol negotiation is only attempted for HTTPS URLs.
     *
     * [Protocol.HTTP_1_0] is not supported in this set. Requests are initiated with `HTTP/1.1`. If
     * the server responds with `HTTP/1.0`, that will be exposed by [Response.protocol].
     *
     * [alpn]: http://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg