Rails: Enabled cookies inside IFrames for IE via P3P headers.
IFrames in IE only get the same cookies as normal pages when P3P headers are added
=> 'iframe-using' IE users get P3P headers on every request
304 Not modified pages do not get P3P headers (via ETag)
=> 'iframe-using' IE users do not get 304
gem install ie_iframe_cookies
To cookie-tag users as 'iframe-using', add this to all actions rendered inside IFrames.
(only IE users are tagged)
before_filter :normal_cookies_for_ie_in_iframes! # :only => [:foo, :bar]