2.1 Transport

The HTTP encapsulation of SSTP Protocol uses the HTTP 1.0 Protocol as a transport. While no port has been reserved specifically for The HTTP encapsulation of SSTP Protocol, it uses well known HTTP port 80. The Secure Tunnel Proxy Protocol uses HTTP 1.0 as a transport between a client and an HTTP proxy, and uses TCP as transport between an HTTP proxy and a server listening on port 443. The SOCKS Connection<1> uses TCP as transport between the client and the SOCKS proxy and between the SOCKS proxy and the server listening on port 2492.