[ZODB-Dev] Browser send HEAD is weird?
Andrew Kuchling
akuchlin@mems-exchange.org
Fri, 6 Sep 2002 08:01:51 -0400
On Fri, Sep 06, 2002 at 12:57:19PM +0100, Chris Withers wrote:
>Isn't that how a lot of browser caching works as HEAD responses are
>supposed to be cheap to generate?
I doubt it, because doing first a HEAD and then a GET would require
two TCP round trips. Caches and browsers (correct ones, anyway)
should be doing a GET with an 'If-Modified-Since' header. See section
14.25 of RFC2616:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html .
--amk (www.amk.ca)
Jenkins! Chap with the wings there -- five rounds rapid.
-- The Brigadier, in "The Daemons"