Question

I have a Jquery Ajax request which goes to Facebook server. (jsonP)

However , Im not satisfy with the current response and I would like to “edit” the response before it goes back to the ajax call.

In order to do it , I was thinking about building a proxy by ashx. ( it will do the request , and when the response is back – he will edit it , and it will return to the ajax call).

jQuery ajax ---> myHandler.ashx ----> Facebook +--->
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jQuery ajax <---- myHandler.ashx(+edit) <-----------+

the problem is that Facebook requires its cookies , And IMHO -only facebook can access its cookies.

Is there any way for the ashx handler to be able to TRANSFER the cookie along with his request ( as if jQuery ajax would do ) ?

Answer 1

Technically, you may simulate a cookie-aware user agent and relay them to user.

Request 1:

• Browser sends the first request to your ashx handler.
• Your handler relays it to facebook server.
• FB responds with a content + a set-cookie header(s) (fb-cookie=xxx on facebook.com)
• Your handler edits the content and returns the set-cookie header with some kind of prefix (your-fb-cookie=xxx on yoursite.com)

Request 2:

• Next time the browser sends a request to your ashx handler, you will receive the the “your-fb-cookie=xxx” (as it is defined on yoursite.com)
• Your handler relays the request to FB with the cookie “fb-cookie=xxx“
• …

However, be aware that facebook (or any other service) may (and should) use some kind of anti-flood detection.
It may block your server’s IP adress as it receives lots of requests from it.
This can even be against FB licensing terms.