读文章写Demo
2018年7月17日
Netty框架实现简单的组播
https://blog.csdn.net/u014489596/article/details/40617519
Netty的UDP及广播实现
https://blog.csdn.net/sinat_28729797/article/details/47613013
单播，组播(多播)，广播以及任播
http://colobu.com/2014/10/21/udp-and-unicast-multicast-broadcast-anycast/
求教netty怎么实现组播多播示例
http://www.debugease.com/j2se/3396586.html
netty的Udp单播、组播、广播实例+Java的Udp单播、组播、广播实例
https://www.cnblogs.com/jetHu/p/7010844.html
很不错的gitbook
https://waylau.gitbooks.io/essential-netty-in-action/NETTY%20BY%20EXAMPLE/UDP%20Broadcast.html
proto文件生成java文件
https://blog.csdn.net/liuwanyouyue/article/details/52583860