What's the difference between a "Socks Proxy" and a "HTTP Proxy which supports CONNECT request"

Question

I know a socks proxy is a proxy which just relays the traffic to the dst ip:port And a HTTP Proxy which support CONNECT request, it also just relays the traffic to the dest host in the http request header Is there any difference in their functions(efficiency eg)?

Answer 1

They are both proxy protocols for layer 4, but...

1. SOCKS can handle TCP and UDP
   HTTP CONNECT can handle only TCP

2. SOCKS are not encrypted (note: authentication ≠ encryption)
   HTTP CONNECT can use TLS

3. SOCKS are dedicated service
   HTTP CONNECT can be cloaked in normal HTTP service