1.局域网内设备IP搜索 2.发送广播包出去，同时启动侦听接收 3.支持局域网内跨网断搜索-1.IP search in local network 2.send broadcast packet, and receive request 3.support different gateway.

大华监控系统软件在局域网内搜索所有在线的摄像头设备。很不错，监控调试必备。(Dahua monitoring system software searches all online camera devices in the LAN. Very good, monitoring and debugging must be necessary.)