libevent

[anancds]

https://blog.csdn.net/luotuo44/article/details/39670221 https://zhuanlan.zhihu.com/p/20315482 https://segmentfault.com/a/1190000020286056 https://uyouii.github.io/2017/12/12/libevent-%E6%9C%8D%E5%8A%A1%E7%AB%AF%E5%AE%A2%E6%88%B7%E7%AB%AF-%E7%AE%80%E5%8D%95%E5%AE%9E%E4%BE%8B/ https://github.com/chenshuo/recipes/blob/master/pingpong/libevent/client.c

[anancds]

http://www.cppblog.com/Solstice/default.html?page=6

[anancds]

https://blog.csdn.net/stayneckwind2/article/details/93795906

[anancds]

https://blog.csdn.net/sky1work2/article/details/95603944