Simon Willison’s Weblog

The Resource Expert Droid. Like the HTML Validator but for your server’s HTTP headers—extremely useful.

# 25th June 2009, 10:06 am / http, headers, validator, resourceexpertdroid, mark-nottingham

A rev=“canonical” HTTP Header. Chris Shiflett proposes optionally exposing rev=canonical information in an HTTP header, thus allowing sites to discover shorter URLs using just a HEAD request and removing the need to parse HTML. The pingback specification also uses this shortcut.

# 12th April 2009, 12:33 pm / pingback, chris-shiflett, head, http, headers, revcanonical