Re:Re:Planning to change the content of the object.

Thanks, Henrik pal!

My plan is very simple. I just want to change one jpg to
another jpg. Is that an east task?

Best regards,
George Ma

----- Original Message -----
From: Henrik Nordstrom
To: maer727@sohu.com
Cc: squid-dev@squid-cache.org
Subject: Re:Planning to change the content of the object.
Sent: Sat May 11 20:47:56 CST 2002

> The main reason is that the Squid code is very badly suited for
> inline modifications of content. It very much assumes the dataflow is
> straight thru unmodified.
>
> If doing it inline in Squid, then about the only location it can be
> done is in client_side.c.
>
> Caution: Be very careful when performing content modifications
> outside the origin server. HTTP is a rather complex protocol and
> unless you take care to clearly indicate the modified content as such
> you may end up with some interesting client interactions.. for
> example what happens if the client has most of the object already
> cached (possibly from another connection not using your modifying
> proxy), and requests only the missing range..
>
> Regards
> Henrik
>
>
> On Saturday 11 May 2002 13:04, maer727@sohu.com wrote:
> > Thanks, Basile pal!
> >
> > Why I should not patching directly Squid for content
> > adaptation? Can you give me some reasons?
> >
> > Best regards,
> > George Ma
> >
> > ----- Original Message -----
> > From: Basile STARYNKEVITCH
> > To: maer727@sohu.com
> > Cc: squid-dev@squid-cache.org
> > Subject: Planning to change the content of the object.
> > Sent: Sat May 11 16:45:39 CST 2002
> >
> > > >>>>> "George_Ma" == <maer727@sohu.com> writes:
> > >
> > > George_Ma> Hi, pals! I am trying to change the content of
> > > some George_Ma> cached object, for example, change one gif to
> > > another George_Ma> gif.
> > >
> > >
> > > You definitely should consider using the Internet Content
> > > Adaptation Protocol. See www.i-cap.org for definition and
> > > tutorial on ICAP
> > >
> > > There is an existing ICAP enhanced Squid. See
> > > http://sourceforge.net/projects/icap-server/
> > >
> > > I would recommand against patching directly Squid for content
> > > adaptation. Definitely use ICAP for that!
> > >
> > > --
> > >
> > > Basile STARYNKEVITCH http://starynkevitch.net/Basile/
> > > email: basile<at>starynkevitch<dot>net
> > > alias: basile<at>tunes<dot>org
> > > 8, rue de la Fa?ncerie, 92340 Bourg La Reine, France
Received on Sat May 11 2002 - 08:27:03 MDT