SSLContext sslContext = SSLContext.getInstance("TLS");
          sslContext.init(null, new TrustManager[] { trustManager }, null);
          sslSocketFactory = sslContext.getSocketFactory();
        } catch (GeneralSecurityException e) {
          throw new RuntimeException(e);
        }

        client = new OkHttpClient.Builder()
            .sslSocketFactory(sslSocketFactory, trustManager)