UDP的服务器/客户端探测小程序。功能为：服务器开启后等待连接并负责回馈信息，客户端可用单播、多播、广播三种方式探测局域网内的服务器并发送消息。...

代码说明：

UDP的服务器/客户端探测小程序。功能为：服务器开启后等待连接并负责回馈信息，客户端可用单播、多播、广播三种方式探测局域网内的服务器并发送消息。-UDP server/client detection of small procedures. Function as follows: after waiting for the server to open connections and is responsible for feedback, the client can be used unicast, multicast, broadcast three ways to detect LAN server and send a message.