COW
HTTP proxy to automatically identify blocked sites
...Ideally, users don't need to care about which websites are inaccessible, and they can directly connect to the website without slowing down the access speed due to the use of secondary agents. 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. ...