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

The trick I used before is increase the value of
READ_AHEAD_GAP.

Yee Man
--- maer727@sohu.com wrote:
> Thanks, Yee pal!
>
> The biggest trouble to me is I cannot get the html
> content of
> a specific URL. They are often released. The .jpg
> and .js are easy
> to change (I have successfully changed one .jpg to
> another.)
>
> Do you have some suggestions to resolve the trouble?
>
>
> Another question, what means "I did it before
> myself" in your reply?
>
> Best regards,
> George Ma
>
> ----- Original Message -----
> From: Yee Man Chan
> To: Henrik Nordstrom ;maer727@sohu.com
> Cc: squid-dev@squid-cache.org
> Subject: Re:Re:Planning to change the content of the
> object.
> Sent: Tue May 14 06:43:43 CST 2002
>
> > I agree George should use redirector if he
> "modifies"
> > objects based on their URLs. If he wants to modify
> > objects based on their content, then he needs to
> do
> > some content processing. I did it before myself.
> It is
> > not too hard after you understand the client_side
> code
> > and how MemObject works.
> >
> > Cheers,
> > Yee Man
> >
> > --- Henrik Nordstrom <hno@squid-cache.org> wrote:
> > > Using the redirector interface it is very
> trivial,
> > > provided you know
> > > the URL of the object you want to replace,
> simply
> > > rewrite the URL to
> > > one of your new image.
> > >
> > > Regards
> > > Henrik
> > >
> > >
> > > On Saturday 11 May 2002 16:26, maer727@sohu.com
> > > wrote:
> > > > 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
> ......
>

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Received on Mon May 13 2002 - 23:15:51 MDT