一个局域网通信小软件，包含通信服务器、用户端、及注册-登陆服务器。可以拿来借鉴，稍加修改就是一个很不错的网络通信工具。-A small local area network communications software, including communications servers, clients, and Register- Login server. Can be used to draw on, a little modification is a very good networ