软件或其组件不需要图形用户界面来相互通信。程序使用机器可读接口或 API 来交换信息和功能。API代表应用程序编程接口。本文将定义 API描述操作方式。

To provide security, control, and caching capabilities, HTTP proxy servers perform two intermediary functions: acting as both an HTTP client and an HTTP server. HTTP proxies support the caching of internet data when forwarding HTTP client requests from web browsers to the internet.

IP addresses are essential for internet connectivity; without an IP address, network communication is impossible. When browsing websites, your IP address is transmitted to the sites you visit, revealing two key pieces of information: your geographic location and Internet Service Provider (ISP). This is why platforms like Weibo and Zhihu have recently implemented features to display users’ IP geolocation. Proxy IPs can mask your real IP address, enhancing privacy.