Varnish computes Content-Length and set it to 0 for one of my URL!

[zabrane Mikael]

Hi Poul,

Can you please open a ticket on this ?
>

Done.


> I need to read the RFC to find out if this is actually a bug, but it
> is certainly not conventional of your backend to send HTTP/1.1


My backend caching server blindly delivers content without inspecting it.
This specific page unfortunately comes from a Microsoft IIS ASP server
before beign stored in the "cache server".


> and none of "Connection:", "Content-Length:" or "Transfer-Encoding"
>

Yep. But Varnish has to be a bit more tolerant regarding servers
deficiencies. Right?

Hope this help.

Regards
Zab

2010/7/12 Poul-Henning Kamp <phk at phk.freebsd.dk>

> In message <AANLkTilyL-KO-EbuGBveEMgzsvKyOySM3c_c7Oc3MrtK at mail.gmail.com>,
> zabr
> ane Mikael writes:
>
> Can you please open a ticket on this ?
>
> I need to read the RFC to find out if this is actually a bug, but it
> is certainly not conventional of your backend to send HTTP/1.1 and
> none of "Connection:", "Content-Length:" or "Transfer-Encoding"
>
> Poul-Henning
>
> >--===============8364418252999650435==
> >Content-Type: multipart/alternative; boundary=0015174be612c79937048b2e98c0
> >
> >--0015174be612c79937048b2e98c0
> >Content-Type: text/plain; charset=ISO-8859-1
> >
> >Hi list,
> >
> >I'm facing a little problem with my actual varnish config.
> >Currently, Varnish have only one backend (it's a caching server).
> >
> >When trying to get a specific URL from the cache through Varnish, it
> always
> >set the header "Content-Length: 0" for it before sending it back to
> Firefox.
> >
> >Inside the cache, this URL has no "Content-Length" header as you can see:
> >
> >1) CACHE BACKEND ---> VARNISH
> >-----------------------------------------------------
> >HTTP/1.1 200 OK
> >Date: Tue, 15 Jun 2010 09:18:29 GMT
> >Content-Type: text/html; charset=UTF-8
> >X-Powered-By: ASP.NET
> >Set-Cookie: jsessionid=XXXXXXXXXXXXXXXXXXX; path=/
> >
> >[payload]
> >
> >
> >2) VARNISH ----> FIREFOX
> >-----------------------------------------
> >Content-Type text/html; charset=UTF-8
> >X-Powered-By ASP.NET
> >Set-Cookie jsessionid=XXXXXXXXXXXXXXXXXXX; path=/
> >Content-Length 0
> >Date Mon, 12 Jul 2010 10:11:06 GMT
> >X-Varnish 353742751
> >Age 0
> >Via 1.1 varnish
> >
> >[payload]
> >
> >
> >How can I tell "Varnish" to always compute the "Content-Length" if it's
> not
> >specified (in the headers response from the cache)?
> >
> >Help appreciated guys!!!
> >
> >N.B: getting this URL directly from the cache (i.e without using Varnish)
> >works perfectly.
> >
> >--
> >Regards
> >Zab
> >
> >--0015174be612c79937048b2e98c0
> >Content-Type: text/html; charset=ISO-8859-1
> >Content-Transfer-Encoding: quoted-printable
> >
> >Hi list,<div><br></div><div><div>I'm facing a little problem with my
> ac=
> >tual varnish config.</div><div>Currently, Varnish have only one backend
> (it=
> >'s a caching server).</div><div><br></div><div>When trying to get a
> spe=
> >cific URL from the cache through Varnish, it always</div>
> ><div>set the header "Content-Length: 0" for it before sending it
> =
> >back to Firefox.</div><div><br></div><div>Inside the cache, this URL has
> no=
> > "Content-Length" header as you can see:</div><div><br></div>
> ><div>1) CACHE BACKEND --->
> VARNISH</div><div>---------------------------=
> >--------------------------</div><div>HTTP/1.1 200 OK</div><div>Date: Tue,
> 1=
> >5 Jun 2010 09:18:29 GMT</div><div>Content-Type: text/html;
> charset=3DUTF-8<=
> >/div>
> ><div>X-Powered-By: <a href=3D"http://ASP.NET">ASP.NET
> </a></div><div>Set-Coo=
> >kie: jsessionid=3DXXXXXXXXXXXXXXXXXXX;
> path=3D/</div><div><br></div><div>[p=
> >ayload]</div><div><br></div><div><br></div><div>2) VARNISH ---->
> FIREFOX=
> ></div>
>
> ><div>-----------------------------------------</div><div><div>Content-Type<=
> >span class=3D"Apple-tab-span" style=3D"white-space:pre">
> </span>text/html; =
> >charset=3DUTF-8</div><div>X-Powered-By<span class=3D"Apple-tab-span"
> style=
> >=3D"white-space:pre">  </span><a href=3D"http://ASP.NET">ASP.NET
> </a></div>
> ><div>Set-Cookie<span class=3D"Apple-tab-span" style=3D"white-space:pre">
>     </=
> >span>jsessionid=3DXXXXXXXXXXXXXXXXXXX;
> path=3D/</div><div>Content-Length<sp=
> >an class=3D"Apple-tab-span" style=3D"white-space:pre">
> </span>0</div><div>D=
> >ate<span class=3D"Apple-tab-span" style=3D"white-space:pre">   </span>Mon,
> 12=
> > Jul 2010 10:11:06 GMT</div>
> ><div>X-Varnish<span class=3D"Apple-tab-span" style=3D"white-space:pre">
>      </s=
> >pan>353742751</div><div>Age<span class=3D"Apple-tab-span"
> style=3D"white-sp=
> >ace:pre">      </span>0</div><div>Via<span class=3D"Apple-tab-span"
> style=3D"whi=
> >te-space:pre"> </span>1.1 varnish</div>
>
> ></div><div><br></div><div>[payload]</div><div><br></div><div><br></div><div=
> >>How can I tell "Varnish" to always compute the
> "Content-Len=
> >gth" if it's not specified (in the headers response from the
> cache=
> >)?</div>
> ><div><br></div>Help appreciated guys!!!</div><div><br></div><div>N.B:
> getti=
> >ng this URL directly from the cache (i.e without using Varnish) works
> perfe=
> >ctly.</div><div><br>-- <br>Regards<br>Zab<br>
> ></div>
> >
> >--0015174be612c79937048b2e98c0--
> >
> >
> >--===============8364418252999650435==
> >Content-Type: text/plain; charset="us-ascii"
> >MIME-Version: 1.0
> >Content-Transfer-Encoding: 7bit
> >Content-Disposition: inline
> >
> >_______________________________________________
> >varnish-misc mailing list
> >varnish-misc at varnish-cache.org
> >http://lists.varnish-cache.org/mailman/listinfo/varnish-misc
> >--===============8364418252999650435==--
> >
>
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
>



-- 
Regards
Zabrane
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