title: Notification for internet connection in Mac OS X cocoa application
body: <p>In my app I want to notify the user for any internet notifications such as switching from ethernet to wifi or no reachability in System it has to automatically notify my app. I know how to do in iphone app using reachability example but the same doesnt work for Mac OS X Cocoa app. How to implement this using Objective-C in my cocoa app?</p>