- request.get_http_headers().remove("Referer");
- request.get_http_headers().append("Referer", "http://www.google.com/" );
-
+ if (request.get_http_headers() != null) {
+ request.get_http_headers().remove("Referer");
+ request.get_http_headers().append("Referer", "http://www.google.com/" );
+ }