2.2.4 Extensions to HTTP
This section defines extensions to HTTP, in addition to the extensions defined in [DLNA].
HTTP headers not defined in this section are defined in [DLNA], or [RFC2616]. In cases where an HTTP header is defined by multiple specifications, the definitions provided by [DLNA] take precedence over definitions in [RFC2616].
This section defines the syntax of the HTTP headers by using the ABNF syntax, as specified in [RFC5234]. Any ABNF syntax rules that are not specified in [RFC5234] use the ABNF extensions that are specified in [RFC2326].