[Varnish] #1104: Duplicate Date headers

[Varnish]

#1104: Duplicate Date headers
-------------------+--------------------------------------------------------
 Reporter:  Roze   |        Type:  defect
   Status:  new    |    Priority:  normal
Milestone:         |   Component:  build 
  Version:  trunk  |    Severity:  normal
 Keywords:         |  
-------------------+--------------------------------------------------------
 Varnish sends additional Date header with the date when the object was
 first fetched (on first request the dates are identical).


 {{{
 wget -S http://10.0.0.1/251324940.jpg

   HTTP/1.1 200 OK
   Date: Thu, 08 Mar 2012 17:47:45 GMT
   Content-Type: image/jpeg
   Last-Modified: Thu, 08 Mar 2012 17:23:43 GMT
   Expires: Thu, 31 Dec 2037 23:55:55 GMT
   Cache-Control: max-age=315360000
   Content-Length: 126142
   Date: Thu, 08 Mar 2012 17:47:45 GMT
   Age: 0
   Connection: keep-alive
 }}}

 and a second request (after ~10 sec)

 {{{
   HTTP/1.1 200 OK
   Date: Thu, 08 Mar 2012 17:47:45 GMT
   Content-Type: image/jpeg
   Last-Modified: Thu, 08 Mar 2012 17:23:43 GMT
   Expires: Thu, 31 Dec 2037 23:55:55 GMT
   Cache-Control: max-age=315360000
   Content-Length: 126142
   Date: Thu, 08 Mar 2012 17:47:54 GMT
   Age: 9
   Connection: keep-alive
   X-Cache: HIT
 }}}

 On both requests there are 2 Date headers.
 Can be seen also from varnishlog:


 {{{
 2738 TxResponse   c OK
 2738 TxHeader     c Date: Thu, 08 Mar 2012 17:47:45 GMT
 2738 TxHeader     c Content-Type: image/jpeg
 2738 TxHeader     c Last-Modified: Thu, 08 Mar 2012 14:11:23 GMT
 2738 TxHeader     c Expires: Thu, 31 Dec 2037 23:55:55 GMT
 2738 TxHeader     c Cache-Control: max-age=315360000
 2738 TxHeader     c Content-Length: 126142
 2738 TxHeader     c Date: Thu, 08 Mar 2012 17:47:45 GMT
 2738 TxHeader     c Age: 0
 2738 TxHeader     c Connection: keep-alive
 }}}

 Doesn't happen with 2.1.5.

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1104>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator