Chat Room

Hi 

i'm building a chat room based on 

https://code.msdn.microsoft.com/CSASPNETAJAXWebChat-c4c9b8fe

why this ?

it is the only one i found that allow you to create rooms 

i'm not good with ajax

i just want some one to help understand how it works

1- Talker ID o need to send the login userid i can't find where it generate that ID

2- alias in the right list (Chat users) it show the alias but when user type some this it display the IP not the alias

that's a start thank you