Re: R: [squid-users] Connection to webmail sites problem using more than one parent proxy

[Amos Jeffries <squid3@xxxxxxxxxxxxx>]

Sergio wrote:
> Hi Amos!
> Thank you for your replying.
>
> I have changed squid version ( now is running the 2.7 stable5) and I have
> modified the parents peers in that way:
>
>  parentproxy1.mydomain.it parent 3128 3130 sourcehash
>  parentproxy2.mydomain.it parent 3128 3130 sourcehash
>  parentproxy3.mydomain.it parent 3128 3130 sourcehash
>
> But I still have the same problem.
>
> I tried also in this way, but it didn't work as well :
>
> parentproxy1.mydomain.it parent 3128 3130 roundrobin sourcehash
> parentproxy2.mydomain.it parent 3128 3130 roundrobin sourcehash
> parentproxy3.mydomain.it parent 3128 3130 roundrobin sourcehash
>
> I'm wondering whether the configuration is correct, or not.

Just the top config should have worked. It selects the parent based on 
client source IP.
Something else must be going on.

> Do you have some better tips about how to configuring it?
>
> Hope to have nice news from you!
>
> Thanks a lot for help!
>
> Sergio 
>
>
> -----Messaggio originale-----
> Da: Amos Jeffries [mailto:squid3@xxxxxxxxxxxxx] 
> Inviato: sabato 1 novembre 2008 4.40
> A: Sergio
> Cc: squid-users@xxxxxxxxxxxxxxx
> Oggetto: Re:  Connection to webmail sites problem using more
> than one parent proxy
>
> Sergio wrote:
> > Hello Everybody,
> >
> >
> > We have this scenario:
> >
> > We have proxy connected to internet trough 3 parent proxy
> >
> > [client]
> >     |
> >     |
> > [proxy]
> >     |
> >     |
> >     +-----------------+---------------+
> >     |                 |               |
> >
> > [parentproxy1],[parentproxy2],[parentproxy3]
> >
> >
> >
> > We have trouble with some  webmail sites ( eg. mail.tiscali.it) that don't
> > keep the connection on the session.
> > We have this problem when the proxy establishes the connection using all
> the
> > proxy serves.
> > If we use only a proxy server as parent the session is not missed.
> >
> > This the localproxy configuration for the cache peers:
> >
> > cache_peer parentproxy1.mydomain.it parent 3128 3130
> > cache_peer parentproxy2.mydomain.it parent 3128 3130
> > cache_peer parentproxy3.mydomain.it parent 3128 3130
> >
> > we use squid 2.5 stable7 version for Windows.
> > The parent proxies use squid 2.5 stable7 for windows as well and go out
> > directly to Internet.
> > How can we override this problem?
> > Thank you in advance guys!
> >
> >
> > Sergio
> >
> >
> >
> > Ps.
> >
> > We also contacted the Tiscali customer care, but they didn't give us any
> > useful information!
>
> Forgot to mention in my earlier reply.
> If you upgrade to current squid the srchash peering algorithm is 
> available to ensure that all requests from a given client IP go through 
> a certain parent. This is hash balanced across all the active parents 
> and handles parents proxies going up/down without breaking client access.
>
> Amos


--
Please be using
  Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10
  Current Beta Squid 3.1.0.1