Re: [squid-users] found two conflicting content-length headers
On Fri, 27 May 2005, kodel wrote: This said I published a patch today to work around this quite common cases in an reasonable manner, hopefully without opening up for cache pollution attacks on the proxy. Thanks again for your help But where I can find those patch you mention here..? From the patches page. I guess it is in the diff file of daily release is that correct ? It is there as well, but not what I meant. Regards Henrik
[squid-users] found two conflicting content-length headers
Hi all
Im sorry before because i know that this problem
already posted in this mailing list, but still I don't
quite understand about the header problem and found no
solutions of it.
Below is the error that I got from my cache.log
Previous thread about this problem says that this trouble
come from the IIS, but the problem is I don't have the authorization
of this webserver..
Is there any chance that I could by pass the header checking
or whatever is that, so I could access the websites through
my squid smoothly..
Thank u all
-kodel-
2005/05/26 13:24:17| ctx: enter level 0:
'http://ls.asklearning.com/peopledimension/sa/pdfviewer.asp'
2005/05/26 13:24:17| WARNING: found two conflicting content-length
headers in {Server: Microsoft-IIS/5.0
Date: Thu, 26 May 2005 06:41:24 GMT
X-Powered-By: ASP.NET
Connection: keep-alive
Content-Disposition: inline;filename=27147_2400.pdf
Content-Length: 308612
Connection: Keep-Alive
Content-Length: 308630
Content-Type: application/pdf
Cache-control: private
}
2005/05/26 13:24:25| ctx: exit level 0
2005/05/26 13:24:25| ctx: enter level 0:
'http://ls.asklearning.com/peopledimension/sa/pdfviewer.asp'
2005/05/26 13:24:25| WARNING: found two conflicting content-length
headers in {Server: Microsoft-IIS/5.0
Date: Thu, 26 May 2005 06:41:33 GMT
X-Powered-By: ASP.NET
Connection: keep-alive
Content-Disposition: inline;filename=27147_2414.pdf
Content-Length: 196598
Connection: Keep-Alive
Content-Length: 196616
Content-Type: application/pdf
Cache-control: private
Re: [squid-users] found two conflicting content-length headers
On Thu, 26 May 2005, kodel wrote:
Hi all
Im sorry before because i know that this problem
already posted in this mailing list, but still I don't
quite understand about the header problem and found no
solutions of it.
Hard to find good solutions when the problem is not in your equipment but
a broken web server which violates the HTTP standards.
Below is the error that I got from my cache.log
Previous thread about this problem says that this trouble
come from the IIS, but the problem is I don't have the authorization
of this webserver..
It's not only IIS. Have also seen this problem with Apache servers running
an old and broken mod_banner plugin, and a number of other sites.
In all cases is it a programming error in the web server or web
application running on the server. You SHOULD talk to the webmaster of the
site(s) in question to have them fix their server.
2005/05/26 13:24:17| ctx: enter level 0:
'http://ls.asklearning.com/peopledimension/sa/pdfviewer.asp'
2005/05/26 13:24:17| WARNING: found two conflicting content-length
headers in {Server: Microsoft-IIS/5.0
Date: Thu, 26 May 2005 06:41:24 GMT
X-Powered-By: ASP.NET
Connection: keep-alive
Content-Disposition: inline;filename=27147_2400.pdf
Content-Length: 308612
Connection: Keep-Alive
Content-Length: 308630
Content-Type: application/pdf
Cache-control: private
The problem in the above is that there is two Content-Length headers.
Content-Length is a very important header in HTTP as this indicates the
size of the response and where the next response from the server begins.
As the headers above is unclear on the size of this response (is it 308612
bytes or is it 308630 bytes?) Squid isn't sure what to do.
This said I published a patch today to work around this quite common cases
in an reasonable manner, hopefully without opening up for cache pollution
attacks on the proxy.
Regards
Henrik
