Issue #2780147 by zenimagine: SSL cert problems when using PHP 5.6+

httprl.module

@@ -677,10 +677,12 @@ function httprl_set_socket($uri, &$options, $proxy_server, &$result) {
       // Disable SNI support as this causes issues with old versions of OpenSSL.
       // By default httprl doesn't validate the SSL certificate, so this is OK.
       if (empty($options['context'])) {
+        $drupal_ssl_context_options = variable_get('drupal_ssl_context_options', array('verify_peer' => TRUE));
         // Affected versions of openssl are 1.0.0i to 1.0.1b.
         if (!defined('OPENSSL_VERSION_NUMBER') || (OPENSSL_VERSION_NUMBER >= 0x1000009f && OPENSSL_VERSION_NUMBER <= 0x1000102f)) {
-          $options['context'] = stream_context_create(array('ssl' => array('SNI_enabled' => FALSE)));
+          $drupal_ssl_context_options += array('SNI_enabled' => FALSE);
         }
+        $options['context'] = stream_context_create(array('ssl' => $drupal_ssl_context_options));
       }
       break;