Why does 302 redirect does not work in a iframe?

Question

In facebook documentatin page login for canvas, they says:

Because your application is being loaded in an iframe, returning a 302 to redirect the user to the Login Dialog will be unsuccessful.

What is the reason for a 302 redirect not working inside an iframe? Does it mean that if I have any redirect in my app, should I do it via javascript, as they suggest or only this one?

Thanks in advance

score 1 · Answer 1 · answered Jan 13 '13 at 16:53

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Your app is in an iframe on the facebook website. So if they allowed that iframe to open another facebook page, it would look like a "facebook inside of facebook".

When a user loads your app in a canvas page, Facebook sends you a signed_request via POST to that page. You can read about how to handle that in the documentation.

answered Jan 13 '13 at 16:53

Tommy Crush

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Everything you said makes sense, but does not answer my question. – duduklein Jan 13 '13 at 19:40
I'm not sure if it accepts redirects to other sites or not. So your answer: try it and see what happens. – Tommy Crush Jan 13 '13 at 19:43
well, I did and apparently it works fine. This is why I would like to know why facebook developers wrote that. – duduklein Jan 13 '13 at 22:15

Why does 302 redirect does not work in a iframe?

1 Answers1