Dev:CPDistributedNotificationCenter

CPDistributedNotificationCenter is a class that provides a subset of the functionality found in NSDistributedNotificationCenter on Mac OS X. It allows a process to send notifications globally without knowledge of listening clients. Interested clients can register for distributed notifications from a known server, and these notifications will be posted via the local NSNotificationCenter.

For using CPDistributedNotificationCenter on iOS 7, see Updating extensions for iOS 7.

Usage
A server cannot immediately start posting notifications on creation. Even if a client process starts listening for notifications before the server runs, there is a minor delay incurred due to registration. Notifications sent by the server will only be sent to clients that have resulted in CPDistributedNotificationCenterClientDidStartListeningNotification being posted. A server can optionally watch for this notification (as well as CPDistributedNotificationCenterClientDidStopListeningNotification) and maintain a counter of listening processes. If there are no listening processes, then the server can avoid or defer posting notifications.

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 * http://github.com/kennytm/iphone-private-frameworks/blob/master/AppSupport/CPDistributedNotificationCenter.h