http://www.360doc.com/content/13/1231/16/14919052_341525862.shtml
Linux下基于socket多线程并发通信的实现 https://www.cnblogs.com/nanrenzhuang/archive/2013/05/01/6315579.html
Linux网络编程——tcp并发服务器(多线程)https://blog.csdn.net/lianghe_work/article/details/46504243
Linux下Socket多线程编程Demo https://www.jianshu.com/p/b835ea25a16f
Linux网络编程——tcp并发服务器(多进程)https://blog.csdn.net/lianghe_work/article/details/46503895
Linux下TCP并发服务器:Select + 多线程模式 https://blog.csdn.net/wangqingchuan92/article/details/80690799