How to implement XMPP protocol in objective-C? [closed]

Answer 1

Make use of the XMPP Framework for Cocoa.

Here's the Getting started using XMPPFramework on iOS.

Answer 2

This is a good tutorial about setting up Jabber client and and will help you to use xmpp.

http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-interface-setup/