How to setup AWS with WINDOWS SERVER 2012 to use xcode for Chat Application

I have successfully configured my AWS. I took Windows Server 2012 and Installed OpenFire for chat application for Android mobile app. I want to create same app for IOS and want to know how to configure it on AWS and xcode side. Is there any libraries available for xcode to use aws server? Is there any aws sdk for ios? Is there any libraries in openFire to be used in Xcode.? I do not know how to setup my server for ios application. Please help me to setup all this things. I Googled but could not find any solution or there may be solution in front of me but I could not see. Please Help. Regards, Dharmesh Ramnani