COW
HTTP proxy to automatically identify blocked sites
...As an HTTP proxy, it can be provided to mobile devices; if deployed on a domestic server, it can be used as an APN proxy. Support HTTP, SOCKS5, shadowsocks and cow itself as a secondary proxy. Multiple secondary agents can be used to support simple load balancing. Automatically detect whether the website is blocked, and only use the secondary proxy for the blocked website. Automatically generate PACs containing directly connected websites, you can bypass COW when visiting these websites. Built-in common websites that can be directly connected , such as domestic social, video, bank, e-commerce and other websites (can be added manually).