Server Sent Events on iOS
You have probably heard about web sockets, which promise to be a better alternative to short and long polling to achieve real time updated websites. But maybe you didn’t know about server sent events. They are nice to send information from server to client using the same server technology you probably have, using a lighter approach than polling.
Here you can find a nice explanation, and you can give it a try by visiting this Server-sent Event Demo from a capable browser.