Principles of P2P communication

Currently, P2P systems generally use client + central server. The network topology is shown below:

Each client informs the server of the relevant information, and the server publishes the information of other clients to each client. Then the client can communicate with each other. The router function is used mainly. The main function of a vro is to maintain a memory table, including the IP addresses and ports of each client on the Internet and the IP addresses and ports in the intranet. When one of the clients requests data from another client, the router automatically routes the relevant information to another client. All P2P systems basically adopt this principle. The current P2P system can be said to be varied, but it never changes. I hope this article will inspire everyone to engage in P2P ..