In less than 20 lines of code (actually, there are only eight that are doing anything), you have built a functional chat server. Here is the flow of this simple program.

在不到20行代码中(实际上，真正实现功能的代码只有8行)，您已经构建了一个能够使用的聊天服务器。

youdao

In December 2010, the websites Mastercard.com, Visa.com and PayPal.com were temporarily paralyzed after thousands of volunteers joined in Anonymous chat rooms and downloaded a simple program that allowed them to spam these sites with junk traffic.

FORBES: U.K. Jails Anonymous Pair For Cyber Attacks