Making cross-sub-domain ajax (XHR) requests using mod_proxy and iframes
... One of the restrictions imposed by all browser side programming languages is that one cannot make cross-domain ajax requests. This restriction comes because of the same origin policy and even sub-domain ajax calls are not allowed. In this blog post, I will demo two methods of making cross-sub-domain ajax requests. First demo will use mod_proxy module of Apache. ... [full article
"very good exploration!" - mf
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