说明：  聊天室说明： 此程序基于C/S模式，Server端只要运行一个就可以了，一个用户对应一个Client端，可以运行多个Client端进行多人聊天，聊天分为广播形式和单点对单点的选择发送形式。此程序可以在单机和局域网运行。 在原来程序的基础上，稍加修改了程序，添加了检测用户名唯一性的功能，并且完善了注释。如果有什么错误，请大家多多指导!
(Chat Room Note : This procedure based on the C/S mode, Server running an end as long as we can. a user corresponding one-Client can run multiple Client-for people to chat, Chat radio format and divided into single-point single point of this form of choice. This procedure can be single and LAN operation. In the original procedure on the basis of some amendments to the procedures, adding users were detected only sexual function, and improve the Notes. If there is anything wrong, please Members can guide!)