sock proxy

SOCKS is an Internet protocol that routes network packets between a client and server through a proxy server. Socks5 additionally provides authentication so only authorized users may access a server. Practically, a SOCKS server will proxy TCP connections to an arbitrary IP address as well as providing a means for UDP packets to be forwarded.

Comparison with HTTP Proxying
SOCKS operates at a lower level than HTTP proxying: SOCKS uses a handshake protocol to inform the proxy software about the connection that the client is trying to make and may be used for any form of TCP or UDP socket connection, whereas an HTTP proxy takes an HTTP request and forwards it to an HTTP server. Though HTTP proxying has a different use-case in mind, the CONNECT method allows one to forward TCP connections, there is however no mechanism for UDP proxying.

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