2011 Nov 14, 7:51
Includes ‘511 Network Authentication Required’ for airport/hotel/coffee shop scenarios! Am I too excited about this?
technical ietf http http-status-codes 2010 Oct 4, 2:05Proposed 428 HTTP error code for hijacking proxies to indicate to the client the user needs to login to the network etc. Glad to see this one's finally happening.
http http-status captive-portal hijack proxy authentication technical rfc reference