Accept-Language Issue

[Laurence Rowe]

Check that you do have the comma in Plone's caching control panel. I can
imagine it being an easy typo to make.

There are many unique variations of Accept-Language headers, so be careful.
I've used this before in vcl_recv to normalise the incoming request:

  # We only care about the language in the I18N_LANGUAGE cookie
  if (req.http.Cookie ~ "(^|.*; )I18N_LANGUAGE=") {
    set req.http.Accept-Language = regsub(req.http.Cookie, "(^|.*;
)I18N_LANGUAGE=([^;]*)(; .*|$)", "\2");
    # XXX need to work out the proper way to match " here, e.g. "en"
    set req.http.Accept-Language = regsub(req.http.Accept-Language,
"^.(.*).$", "\1");
  } else {
    set req.http.Accept-Language = "en";
  }

Laurence

On 1 July 2010 22:04, Ken Brownfield
<kb+varnish at slide.com<kb%2Bvarnish at slide.com>
> wrote:

> I do notice that the Vary header is malformed:
>
> Vary: User-Agent Accept-Language
>
> It should be comma-separated AFAIK.  Also, all of the lines from your last
> header dump have appended periods... not sure that's the actual output or
> just a paste glitch.
>
> Perhaps Varnish is being very strict about malformed headers and dumping
> the connection immediately.  Which is probably a good thing, if true.
> --
> Ken
>
> On Jul 1, 2010, at 1:54 PM, Andrey Nepomnyaschih wrote:
>
> Hello,
>
> Can somebody give me a hint for what am I doing wrong with my setup. I have
> Zope instance that is proxied by nginx (doing address rewriting) that I want
> to be cached by varnish, but as soon as I configure Zope to add
> Accept-Language to Vary header, varnish starts closing connection when asked
> for object from Zope without returning any data. I'm using default.vcl
>
> Using tcpdump doesn't reveal anything useful, the only difference is
> Accept-Language value in Vary header.
>
> Request that works:
>
> # GET -H "Host: hostname.domain.tld" -Used http://hostname.domain.tld
> GET http://hostname.domain.tld
> Host: hostname.domain.tld
> User-Agent: lwp-request/5.834 libwww-perl/5.836
>
> 200 OK
> Wide character in print at /usr/local/bin/GET line 439.
> Cache-Control: max-age=0, s-maxage=0, private, must-revalidate
> Connection: close
> Date: Thu, 01 Jul 2010 20:30:22 GMT
> Via: 1.1 varnish
> Age: 0
> ETag: ||Plone Default||0|181||||355004
> Server: nginx/0.7.67
> Vary: User-Agent
> Content-Language: en
> Content-Length: 5485
> Content-Type: text/html;charset=utf-8
> Expires: Mon, 03 Jul 2000 20:30:22 GMT
> Client-Date: Thu, 01 Jul 2010 20:30:22 GMT
> Client-Peer: 82.103.128.123:80
> Client-Response-Num: 1
> Content-Base: http://hostname.domain.tld/plonesite/front-page
> Imagetoolbar: no
> Link: <http://hostname.domain.tld/plonesite/front-page>;
> rel="kss-base-url"
> Link: <
> http://hostname.domain.tld/plonesite/portal_kss/Plone%20Default/at-cachekey6690.kss>;
> rel="kinetic-stylesheet"; type="text/css"
> Link: <http://hostname.domain.tld/plonesite/favicon.ico>; rel="shortcut
> icon"; type="image/x-icon"
> Link: <http://hostname.domain.tld/plonesite>; rel="home"; title="Front
> page"
> Link: <http://hostname.domain.tld/plonesite/sitemap>; rel="contents";
> title="Site Map"
> Link: <http://hostname.domain.tld/plonesite/search_form>; rel="search";
> title="Search this site"
> Title: Plone Site!
> X-Cache-Headers-Set-By: CachingPolicyManager:
> /plonesite/caching_policy_manager
> X-Caching-Rule-Id: plone-content-types
> X-Header-Set-Id: cache-in-memory
> X-Meta-Generator: Plone - http://plone.org
> X-Pagecache: MISS
> X-UA-Compatible: IE=edge
> X-Varnish: 1366563744
>
> Results in the following request to nginx:
>
> 2010/07/01 22:30:22.196300 127.0.0.1:25266 -> 127.0.0.1:8080 [AP]
> GET / HTTP/1.1.
> Host: hostname.domain.tld.
> User-Agent: lwp-request/5.834 libwww-perl/5.836.
> X-Forwarded-For: 82.103.128.123.
> X-Varnish: 1366563744.
>
> And the following reply from nginx:
>
> T 2010/07/01 22:30:22.267204 127.0.0.1:8080 -> 127.0.0.1:25266 [AP]
> HTTP/1.1 200 OK.
> Server: nginx/0.7.67.
> Date: Thu, 01 Jul 2010 20:30:22 GMT.
> Content-Type: text/html;charset=utf-8.
> Connection: keep-alive.
> X-Pagecache: MISS.
> Content-Length: 5485.
> Content-Language: en.
> X-Cache-Headers-Set-By: CachingPolicyManager:
> /plonesite/caching_policy_manager.
> Expires: Mon, 03 Jul 2000 20:30:22 GMT.
> Vary: User-Agent.
> ETag: ||Plone Default||0|181||||355004.
> X-Caching-Rule-Id: plone-content-types.
> Cache-Control: max-age=0, s-maxage=0, private, must-revalidate.
> X-Header-Set-Id: cache-in-memory.
>
> Request that doesn't work:
>
> [root at rain /usr/local/etc/varnish]# GET -H "Host: hostname.domain.tld"
> -Used http://hostname.domain.tld
> GET http://hostname.domain.tld
> Host: hostname.domain.tld
> User-Agent: lwp-request/5.834 libwww-perl/5.836
>
> 500 Server closed connection without sending any data back
> Content-Type: text/plain
> Client-Date: Thu, 01 Jul 2010 20:27:54 GMT
> Client-Warning: Internal response
>
> Results in the following request to nginx:
>
> 2010/07/01 22:27:54.507294 127.0.0.1:50795 -> 127.0.0.1:8080 [AP]
> GET / HTTP/1.1.
> Host: hostname.domain.tld.
> User-Agent: lwp-request/5.834 libwww-perl/5.836.
> X-Forwarded-For: 82.103.128.123.
> X-Varnish: 1656652273.
>
> And the following reply from nginx:
>
> 2010/07/01 22:27:54.573671 127.0.0.1:8080 -> 127.0.0.1:50795 [AP]
> HTTP/1.1 200 OK.
> Server: nginx/0.7.67.
> Date: Thu, 01 Jul 2010 20:27:54 GMT.
> Content-Type: text/html;charset=utf-8.
> Connection: keep-alive.
> X-Pagecache: MISS.
> Content-Length: 5485.
> Content-Language: en.
> X-Cache-Headers-Set-By: CachingPolicyManager:
> /plonesite/caching_policy_manager.
> Expires: Mon, 03 Jul 2000 20:27:54 GMT.
> Vary: User-Agent Accept-Language.
> ETag: ||Plone Default||0|180||||355004.
> X-Caching-Rule-Id: plone-content-types.
> Cache-Control: max-age=0, s-maxage=0, private, must-revalidate.
> X-Header-Set-Id: cache-in-memory.
>
> Kind Regards,
> Andrey Nepomnyaschih
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