Web-chat build on Codeigniter and Websocket

I want to add a chat feature for my project using web socket. I’m already developing my project in php codeIgniter framework, so chat application should support to my project smoothly. Along with this i will share my user interface as well as requirements for the chat application that I need. I want to know what all configuration I have to do before I’m implementing a web socket chat application. Requirements: 1. Basically I need 2 section, one for deploying the users and the other one for chat messages.(Ref [login to view URL]) 2. If the user is reading the older chat messages and then suddenly a new message received on bottom I want to show a small div which display a message like “New Message” and scroller should not come to the bottom automatically. 3. I did a javascript function for edit button, so once I press that it will show checkbox for all the messages(already done). So now I need the users to select the multiple messages and able to delete it.(Ref. inbox with [login to view URL]) 4. Under the chat history section along with every users name there will be a cross mark to delete the user from the list.(Ref. [login to view URL])