Re: Tar process not dying after user hits "stop"

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Mike Cardwell wrote:
> Hi people,
> 
> I'm using:
> 
> Apache/1.3.33
> mod_perl/1.29
> 
> On a Debian Sarge system.
> 
> The code I'm having problems with is quite long, so I've written a cut 
> down version. In my virtual host block I have something along the lines of:
> 
> <Location /test.tar>
>       SetHandler perl-script
>       PerlHandler My::Handler
> </Location>
> 
> Basically, you go to /test.tar and a tarball is returned by My::Handler. 
> However, it is generated on the fly like:
> 
> # Get the content-length:
> my( $command ) = "/bin/tar -c -h -f /dev/null --totals the_directory 
> 2>&1"=~/^(.+)$/;
> `$command` =~ /Total bytes written: (\d+)/gsm;

You probably better off not using an external process, but
http://search.cpan.org/dist/Archive-Tar/ instead.

> The problem is, when someone hits stop in their web browser and ends the 
> transfer prematurely, the tar command doesn't die like I'd hoped it 
> would. I'm assuming here that I'm missing something basic in my 
> knowledge of how modperl works...

This is normal, please read:
http://perl.apache.org/docs/1.0/guide/debug.html#Handling_the__User_pressed_Stop_button__case


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