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I signed up to Farmville and I get a URL like:

https://apps.facebook.com/onthefarm/index.php?ref=tab

At the bottom of the page are ads which are served not using ssl - they are pulling in regular http calls. How are the mixed content warning dialogues suppressed? Is it trickery or due to frames?

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Looking at the code my guess would be frames - since facebook killed off fbml tabs all facebook apps run in an iframe so the content of the frame must be ssl but the rest of the page not.

  • Interesting. The non-secure ads are loading within the secure Iframe though. So you have secure SSL host page (facebook.com), then the 3rd party iframe (zynga.com.//...) and then within that page you get the non-secure calls. – Dan Oct 29 '12 at 15:09

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