libevent

https://zhuanlan.zhihu.com/p/688223833

https://blog.csdn.net/qq_45528306/article/details/135787903

https://blog.csdn.net/Lmz_0314/article/details/140158710

https://blog.csdn.net/libaineu2004/article/details/48039389

https://www.cnblogs.com/csdreamer/articles/3064030.html

https://cloud.tencent.com/developer/article/1814453?policyId=1004

https://zhuanlan.zhihu.com/p/179150371