Feed Protocol - Syntax

Syntax

The syntax for a feed URI may be expressed in Backus–Naur form as follows:

::= "feed:" | "feed://"

Specifically, a feed URI may be formed from any absolute URI (such as an absolute URL) by prepending feed, and as a special case, may be formed from any absolute http URI by replacing the initial http:// with feed://.

The and constructs in the syntax are specified in RFC 3986 also known as STD 66. Here is in essence the userinfo@host:port part of the original http URI, and is the following absolute path introduced by a slash "/"; it can be empty or absent. Therefore, the following are two examples of valid feed URIs:

feed:https://example.com/entries.atom feed://example.com/entries.atom

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