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 re