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Re: cache peer problem with two squid one Tproxy --->normal Porxy

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On 13/11/2014 11:55 a.m., Ahmed Allzaeem wrote:
> Hi all
> 
> I have two proxies
> 
> 
> 
> 1(tproxy) and configured it to get from another normal proxy
> 
> So , my topology is as below
> 
> 
> 
> 
> 
> Tproxy- listen on 6000------------------->normal proxy listen 3127
> 
> 
> 
> The problem is done on the normal proxy , I sont see hit or access
> logs but I can see logs as below :
> 
> 
> 
> 
> 
> 2014/11/12 15:17:25 kid1| WARNING: Forwarding loop detected for:
> 
> GET /favicon.ico HTTP/1.1
> 
> Host: 108.61.172.74
> 
> User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0)
> Gecko/20100101 Firefox/33.0
> 
> Accept:
> text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
> 
> Accept-Language: en-US,en;q=0.5
> 
> Accept-Encoding: gzip, deflate
> 
> Via: 1.1 localhost.localdomain (squid/3.4.3)

Problem #1: The *public* domain name for your proxy is apparently
"localhost".

Any traffic it receives from any other proxy calling itself or
resolving to the domain "localhost" will die horribly.

Since Squid claims a forwarding loop I guess your proxies are either
both configured to call themselves "localhost", or possibly there
really is a forwarding loop. You wont be able to know for sure until
you fix the proxy servers hostname.

> 
> As we see , the request reach from the tproxy to the normal proxy ,
> but not processed well @ the normal proxy.
> 
> Here are config file for the tproxy for the cache peer :
> 
> cache_peer xxxxxx  parent 3127 0 default
> 

Problem #2:
 Your cache_peer directive is missing the no-tproxy option.

As a result the tproxy Squid is sending TCP packets to the peer using
the client address as src-IP.



Amos
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