What is an HTTP proxy server?

Proxy server implementation process

Create a listening server to listen to client connections.

After the client is connected, send the information that the client wants to surf the Internet to the network web server,

Then read the data from there and send it to the client.

Note: the client sets my address and port through the settings of the browser. Once accessing a domain name, it will connect with the proxy server.

The proxy server itself is both a server and a client. For the browser, it is the server, and for the web server, it is the client. For example, the proxy server is placed on a foreign host to access the local content that is blocked.