wget gives error: Last-modified header invalid -- time-stamp ignored. Last-modified also seems to be always more than 1 hour behind real time wget -d -v http://packages.gentoo.org/feed/verbump Setting --verbose (verbose) to 1 DEBUG output created by Wget 1.14 on linux-gnu. --2012-08-07 21:52:08-- http://packages.gentoo.org/feed/verbump Resolving packages.gentoo.org... 140.211.166.187 Caching packages.gentoo.org => 140.211.166.187 Connecting to packages.gentoo.org|140.211.166.187|:80... connected. Created socket 3. Releasing 0x00000050f641a800 (new refcount 1). ---request begin--- GET /feed/verbump HTTP/1.1 User-Agent: Wget/1.14 (linux-gnu) Accept: */* Host: packages.gentoo.org Connection: Keep-Alive ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.1 200 OK Server: Apache Expires: Tue, 07 Aug 2012 19:47:00 UTC Last-Modified: Tue, 07 Aug 2012 18:31:30 UTC Cache-Control: max-age=1800, public, s-maxage=1800 Vary: Accept-Encoding Content-Type: text/html;charset=utf-8 Content-Length: 13549 Date: Tue, 07 Aug 2012 19:52:10 GMT X-Varnish: 1040720423 1040715347 Age: 1722 Via: 1.1 varnish Connection: keep-alive ---response end--- 200 OK Registered socket 3 for persistent reuse. Length: 13549 (13K) [text/html] Saving to: 'verbump' Last-modified header invalid -- time-stamp ignored. after later call: HTTP/1.1 200 OK Server: Apache Expires: Tue, 07 Aug 2012 20:17:00 UTC Last-Modified: Tue, 07 Aug 2012 19:01:11 UTC Cache-Control: max-age=1800, public, s-maxage=1800 Vary: Accept-Encoding Content-Type: text/html;charset=utf-8 Content-Length: 14790 Date: Tue, 07 Aug 2012 20:03:47 GMT X-Varnish: 1040721942 1040720556 Age: 619 Via: 1.1 varnish Connection: keep-alive
Why is the header invalid? It looks perfectly valid to me. Also, the >1 hour lag is correct. The tree is already ~40 mins old when you fetch it via rsync, and updating the data often takes 20+ minutes.
probably because wget function http_atotm returned -1 tmr = http_atotm (hstat.remote_time); if (tmr == (time_t) (-1)) logputs (LOG_VERBOSE, _("\ Last-modified header invalid -- time-stamp ignored.\n"));
header is probably invalid because it has UTC instead of GMT
(In reply to comment #3) > header is probably invalid because it has UTC instead of GMT All HTTP date/time stamps MUST be represented in Greenwich Mean Time (GMT), without exception. For the purposes of HTTP, GMT is exactly equal to UTC (Coordinated Universal Time). Fixed: antarus@a01 ~/code/checkouts/packages/web $ git cherry-pick be65ddb [master 2779d06] Change to GMT to meet RFC requirements and fix bug 430350 1 files changed, 2 insertions(+), 2 deletions(-) To git@git.gentoo.org:/packages 03dd7f5..2779d06 master -> master
