[Varnish] #1619: Varnishncsa does not log 304

[Varnish]

#1619: Varnishncsa does not log 304
---------------------------------+-------------------------
 Reporter:  vrobert              |       Type:  defect
   Status:  new                  |   Priority:  high
Milestone:  Varnish 4.0 release  |  Component:  varnishncsa
  Version:  4.0.2                |   Severity:  major
 Keywords:  varnishncsa 304      |
---------------------------------+-------------------------
 Hi,

 since that we migrated to varnish 4 (0.1 or 0.2), we had not 304 in log.

 If a conditional request arrives, a 304 code could be send by Varnish, but
 it's never logged by varnishncsa.

 Instead of 304, a 200 with Content-Lenght at 0 byte is logged.

 ex:
 {{{
 93.17.51.134 - - [27/Oct/2014:16:05:24 +0100] "GET http://www.ouestfrance-
 auto.com/voiture-occasion/passat-cc-2-0-tdi-140-dsg-carat/ HTTP/1.1" 200 0
 "-" "Mozilla/5.0 (compatible; Googlebot/2.1;
 +http://www.google.com/bot.html)" hit 0.000162
 }}}

 for the request :

 {{{
 curl -v --header 'If-Modified-Since: Mon, 27 Oct 2014 14:58:36 GMT' -A
 "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
 "http://www.ouestfrance-auto.com/voiture-occasion/passat-cc-2-0-tdi-140
 -dsg-carat/"
 * About to connect() to www.ouestfrance-auto.com port 80 (#0)
 *   Trying 212.95.70.231... connected
 * Connected to www.ouestfrance-auto.com (212.95.70.231) port 80 (#0)
 > GET /voiture-occasion/passat-cc-2-0-tdi-140-dsg-carat/ HTTP/1.1
 > User-Agent: Mozilla/5.0 (compatible; Googlebot/2.1;
 +http://www.google.com/bot.html)
 > Host: www.ouestfrance-auto.com
 > Accept: */*
 > If-Modified-Since: Mon, 27 Oct 2014 14:58:36 GMT
 >
 < HTTP/1.1 304 Not Modified
 < Date: Mon, 27 Oct 2014 09:45:49 GMT
 < Content-Type: text/html
 < Vary: Accept-Encoding
 < X-Powered-By: PHP/5.5.12
 < Expires:
 < Cache-Control: public, max-age=1800
 < Pragma:
 < Access-Control-Allow-Origin: *
 < Access-Control-Allow-Methods: GET, POST
 < Access-Control-Allow-Headers: X_OFA
 < x-url: www.ouestfrance-auto.com/voiture-occasion/passat-cc-2-0-tdi-140
 -dsg-carat/
 < h-url: /voiture-occasion/passat-cc-2-0-tdi-140-dsg-carat/
 < X-Varnish: 674201926 491946724
 < Via: 1.1 varnish-v4
 < X-Age: 19175
 < grace: full(bot)
 < X-Served-By: ofm-proxy01.sdv.fr
 < Connection: keep-alive
 <
 * Connection #0 to host www.ouestfrance-auto.com left intact
 * Closing connection #0
 }}}

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1619>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator