title: Is there any available solution to provide xsrf/csrf support for Google app engine?
body: <p><a href="http://en.wikipedia.org/wiki/Cross-site_request_forgery" rel="noreferrer">Cross-site request forgery</a> is common on web now a days. I am facing this in my own site deployed on Google App engine. I got to know this by examining access logs. Is there any XSRF/CSRF library or other solution available for App engine that I can use. And, how much load it will add to my site?</p>