SystemDefaultCredentialsProvider credentialsProvider = new SystemDefaultCredentialsProvider();
        configureSslSocketConnectionFactory(builder, httpSettings.getSslContextFactory(), httpSettings.getHostnameVerifier());
        configureAuthSchemeRegistry(builder);
        configureCredentials(builder, credentialsProvider, httpSettings.getAuthenticationSettings());
        configureProxy(builder, credentialsProvider, httpSettings);

        HostnameVerifier hv = null;
        SSLSocketFactory ssf = null;
        if ( this.connection instanceof HttpsURLConnection ) {
            hv = ( (HttpsURLConnection) this.connection ).getHostnameVerifier();
            ssf = ( (HttpsURLConnection) this.connection ).getSSLSocketFactory();
        }

        this.connection = (HttpURLConnection) this.connection.getURL().openConnection();