This Chat App provides standard functionalities of inviting people to chat room and standard text message exchange.
It supports inviting/being invited and chatting with other chat app implementations.
This Chat App also supports dynamic installing commands for unknown data types.

Users are allowed to specify the name for char room when creating a new room, and the name for displaying himself in every chat room.
A list of chat rooms will be displayed on the main view, and a list of users will be displayed on the mini view for each chat room.

The behavior of the chat app when closing a chat room is essentially exiting the room.
The behavior of closing the entire chat app is leaving all the rooms.