netcat命令
广播UDP消息给局域网内的所有主机
server：nc -luk 9999 client: echo "test data" | nc -u -b 255.255.255.255 9999
socat - UDP-DATAGRAM:255.255.255.255:24000,broadcast
https://www.xp.cn/jishu-php-3044.html
https://www.cnblogs.com/oloroso/p/4610563.html
广播UDP消息给局域网内的所有主机
server：nc -luk 9999 client: echo "test data" | nc -u -b 255.255.255.255 9999
socat - UDP-DATAGRAM:255.255.255.255:24000,broadcast
https://www.xp.cn/jishu-php-3044.html
https://www.cnblogs.com/oloroso/p/4610563.html
