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 / headers, http, mark-nottingham, resourceexpertdroid, validator

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 / chris-shiflett, head, headers, http, pingback, revcanonical