Google App Engine, Python, deleting a cookie or changing its value?

Question

I've been searching on this but can't seem to figure out how I can delete a specific cookie using Google Apps Engine, Python version. I am setting the cookie like below and I need to update its value, I figure I may not be able to update and just need to delete and re-create but can't seem to find the way to do that, I am creating it as below:

        str = 'if_loggedin_username='+ self.username
        self.from_obj.response.headers.add_header(
                                 'Set-Cookie', str)

Thanks for any advice.

Answer 1

There is no way for the server to delete an HTTP cookie. To update the value, just send a new cookie with the same name and it will be updated; to "delete" the cookie, set an expiration time in the past.