最新版本比较并获得下载地址，并提供下载提示功能-compare the latest version was downloaded addresses, and provide download guide.

这是一个简单的网络通信的程序。局域网内发送消息的功能比较全。学习网络通信可以借鉴-This is a simple network communications procedures. LAN messaging function Compare. Learning networks can draw on communications