The “Vary” header field in a response describes what parts of a request message, aside from the method, Host header field, and request target, might influence the origin server’s process for selecting and representing this response. The value consists of either a single asterisk (“*”) or a list of header field names (case-insensitive). (RFC 7231: Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content)



JSON

Return to list of all ( HTTP Header Fields | Web Concepts )