I have a multiuser environment where if any user makes any change to the page I broadcast it to the other users. Recently I have integrated iframe for embedding third-party websites. How can I detect changes from inside an iframe so that I can broadcast that in the same fashion?
For example, let's say I have an embedded iframe of Google Maps. If one user pans the map I want this action to be broadcasted to other users as well so that all the user sees the same thing. How can I achieve this?