whisper实现的p2p连接，可以利用该代码学习p2p网络的基本原理，包括一些常见的p2p操作，如加入、退出、寻找资源等等。(The P2P connection implemented by whisper can use this code to learn the basic principles of P2P network, including some common P2P operations, such as joining, exiting, searching for resources, etc.)