2.2.1.3 Response Headers

The HTTP Encapsulation of SSTP protocol uses a subset of the HTTP Response Headers defined by the HTTP 1.0 Protocol (see [RFC1945], section 10).

A server SHOULD NOT send any HTTP Response Header not specified in this section. An HTTP Response Header received by the client not specified in this list SHOULD be interpreted in accordance to the HTTP 1.0 Protocol. If the client or the server receives an HTTP header that is specified in this section but that contains a value that is not specified in this section, the header SHOULD be ignored.