private static SSLSocketFactory defaultSslSocketFactory(X509TrustManager trustManager)
            throws NoSuchAlgorithmException, KeyManagementException {
        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(null, new TrustManager[] { trustManager }, null);

        return sslContext.getSocketFactory();
    }
Returns the VM's default SSL socket factory, using {@code trustManager} for trusted root
certificates.
ache/src/main/java/achecrawler/crawler/async/fetcher/OkHttpFetcher.java