Re: [squid-users] Using a helper program with squid

What we are trying to do (for a research project) is to change the
content that is being sent to the client. However, we don't like to have
to deal with all the different cases that HTTP can be used (for
instance, CONNECT, HEAD, range queries, and other commands) We therefore
decided to use squid to deal with the requests. So, squid will grab the
result from the original Web server, and send it to our program for
modifications and wait for our program to respond. Squid will then send
the results it gets from our program to its client.

This program can be, for instance, filtering "bad content" or, changing
dollar amounts to Euro amounts, or... changing all the occurrences of
"Microsoft Windows" to "Linux"

Regards,
--Sasan

Lakshmi R wrote:

> Hey r u looking for load balancing or one primary server ..... becoz
> replication is something which can be done locally.. i guess that is
> done using hasing algorithm...
>
> If load balancing then it can be done through DNS or CARP load
> balancing...
>
> regards,
> -Lakshmi
>
> Chris Perreault <Chris.Perreault@Wiremold.com> wrote:
>
> It sounds like you want a second proxy out on the internet that is
> replicated with the data from the primary proxy server. If you
> explain the
> purpose of the internet based server that is collecting cached
> information
> from the main proxy, maybe that will help. i.e. is there another
> set of
> users using this second cached server?
>
> Chris
>
> -----Original Message-----
> From: Sasan Dashtinezhad [mailto:sasan@cs.umd.edu]
> Sent: Wednesday, August 04, 2004 12:21 PM
> To: Lakshmi R
> Cc: squid-users@squid-cache.org
> Subject: Re: [squid-users] Using a helper program with squid
>
> Thanks Lakshmi,
>
> I think I understand your solution. But as I explained in my other
> response,
> I need squid to "send the results it has for the client (coming
> either from
> its cache or the original Web server), to another server, and read the
> response from that se! rver, and send that to its client."
> I do want squid to contact the original Web server...
>
> Sorry folks if you're tired of seeing the same question re-stated
> in several
> emails.
>
> Regards,
> --Sasan
>
> On Wed, 4 Aug 2004, Lakshmi R wrote:
>
> >
> > Hi Sasan,
> > First, you need to give Squid a parent cache. Second, you need
> to tell
> Squid it can not connect directly to origin servers. This is done
> with three
> configuration file lines:
> > cache_peer parentcache.foo.com parent 3128 0 no-query default
> acl all src 0.0.0.0/0.0.0.0 never_direct allow all
> > Note, with this configuration, if the parent cache fails or becomes
> unreachable, then every request will result in an error message.
> >
> >
> > In case you want to be able to use direct connections when all
> the parents
> go down you should use a different approach:
> > cache_peer parentcache.foo.com parent 3128 0 no-query
> prefer_direct off
> > The default beh! aviour of Squid in the absence of positive ICP,
> HTCP, etc
> replies is to connect to the origin server instead of using
> parents. The
> prefer_direct off directive tells Squid to try parents first.
> >
> > I guess this is what u r looking for....
> >
> > regards,
> > -Lakshmi
> >
> > Sasan Dashtinezhad wrote:
> > Has anybody gotten a chance to look at the replied email? I'd
> > appreciate it if somebody could at least give me a "yes or no"
> response.
> >
> > Regards,
> > --Sasan
> >
> > Sasan Dashtinezhad wrote:
> >
> > >Hi folks,
> > >
> > >I'm trying to use squid as my proxy, but in a rather weird
> setup. I
> > >need the HTTP packets to be sent to another connection (not the
> > >original connection from which the request was received) and then
> > >read the response from another connection and send that to the
> > >original connection. I.e., client sen! ds request to squid squid
> > >connects to original server squid reads response R squid sends
> R to
> > >x.y.z:p (somewhere on the Internet) and closes the connection when
> > >done squid opens a new connection to x.y.z:p to read the response
> > >squid reads response R'
> > >squis sends R' to client
> > >
> > >I know that squid is a powerful tool and can be configured in
> several
> > >ways. Is it possible for me to do all of this (or something
> similar)
> > >using the configuration mechanisms of squid? Or do I have to dive
> > >into the source code and try implementing this myself...? (I'm
> having
> > >a feeling that I might be able to do this using peers.)
> > >
> > >Any help is strongly appreciated.
> > >
> > >Regards,
> > >--Sasan
> > >
> > >
> > >
> >
> >
> >
> >
> > Lakshmi
> >
> > ---------------------------------
> > Do you Yahoo!?
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>
>
>
> Lakshmi
>
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Received on Wed Aug 04 2004 - 11:38:36 MDT