Re: [users@httpd] Apache with ExtFilterDefine problem

["host.md" <oleg@xxxxxxxxxxx>]

----- Original Message ----- 
From: "Joshua Slive" <joshua@xxxxxxxx>
To: <users@xxxxxxxxxxxxxxxx>
Sent: Friday, September 22, 2006 4:15 PM
Subject: Re: [users@httpd] Apache with ExtFilterDefine problem


> On 9/22/06, host.md <oleg@xxxxxxxxxxx> wrote:
> > Hi to all. I am running a site with free hosting on apache. Everything 
> > works
> > fine..until some of our free users, by mistake runs some infinite loops. 
> > The
> > current configuration of the apache is based on ExtFilterOutput, which 
> > sends
> > all the output to a script in perl that adds some banners. The problem is
> > when users by mistake, generate Gigs of output, back to client,  our 
> > server
> > hangs. The perl script takes all the output that apache sends via <STDIN>
> > and adds, as i said, the banner:
> >
> > #perl output filter
> > $stdin=<STDIN>."some_banner_path_here";
> > print $stdin;
> >
> > What happends here is that STDIN becomes very big, and perl script hangs,
> > growings very large, in memory. How can i restrict apache not to generate
> > that much information back to the client? I found nothing in internet 
> > about
> > that. Maybe there are some other methods of adding some ads to html 
> > pages???
> >
> > If for you need some more details please tell me.
>
> Simple solution: have your script count bytes and abort when it
> reaches a certain number.
>
> Even simpler solution: write your script in such a way that it isn't
> buffering the entire request before sending it along.
>
> More stable and performant solution: In place of mod_ext_filter, use
> an apache module that doesn't involve forking a perl script to mangle
> each request.  Examples of modules that can do this include
> mod_publisher, mod_perl, mod_php, etc.
>
> Joshua.

I took a look at mod_perl filters, and it is obvious what i need. It has a 
simple interface to the Apache API , and lots of example, how to use it.
Thanks a lot Joshua!

Oleg R. 


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