Interprocess communication on iOS with Mach messages

[vezzy-fnord]

http://ddeville.me/2015/02/interprocess-communication-on-ios-with-mach-messages/

[conradev]

Using this knowledge that `CFMessagePort` works within app groups on iOS, I wrote a distributed notification center that can communicate between an app and its extensions: https://github.com/DeskConnect/WFNotificationCenter

Makes it very easy to get live updating or any other communication to work.