Chat/Messaging System

Chat + Messaging System work like Facebook Message - We have a application base on CodeIgniter Framework - there is a table of Users with unique ID and Screen Name - Listing of online/offline users - Click to chat with another user - Can send message even user is offline - Database table to store all conversations (online/offline) - Offline message get pushed to URL to a notification service (like iOS) - User see all message received when he come online - Chatroom can be 1 to 1 or a user can create a multi party chat. (like WhatApps) Basically all this is are functions of Facebook chat/message. So if you have already done such module. Please ping me. Good if you already have existing code and maybe just small modification. Even better if you have it for mobile iOS/Android as well. For Web Browser end. We like the HTML just like how Facebook chat like on the lower right corner. And there is a message page to check messages different.