Get Exchange user events/appointments

I have an iOS app and I need to be able to fetch all of the appointments from Exchange users. Can anyone point 开发者_StackOverflow中文版me in a good direction on this? It seems possible since iPhone and other apps/Outlook can do it but I don’t see it in the IMAP protocol so I need a nudge in the right direction.

IMAP won't help you with with Exchange activities, contacts, tasks. Use EWS - http://msdn.microsoft.com/en-us/library/bb204119(v=exchg.140).aspx