In case anyone was wondering, found another thread in reference to it and the
"solution":
http://www.egroups.com/message/modperl/26850
http://www.ee.ethz.ch/~slist/rrd-users/msg01700.html
http://www.ee.ethz.ch/~slist/rrd-users/msg01704.html
The problem is with older versions of libgd...
Adi
On Thu, Dec 28, 2000 at 01:40:49AM -0800, R.P. Aditya wrote:
> I have a simple script dynamically generating a PNG based on form input:
>
>
> #!/usr/bin/perl
> # genImage.perl
> use strict;
>
> print < Content-type: image/png
>
> LLI
>
> genPNG(); #a subroutine that can produce PNGs using libpng
>
>
> this worked fine before I used mod_perl. I've tried using:
>
> $q->header('image/png');
>
> instead of the print "Content-Type" line, to no avail. Annoyingly enough, if
> I generate a jpeg ($q->header('image/jpeg')), albeit with a different library
> routine, it works fine...
>
> Other possibly relevant details:
>
> Apache/1.3.12 (Unix) mod_perl/1.23
>
> and in httpd.conf:
>
>
>SetHandler perl-script
>PerlHandler Apache::Registry
>PerlSendHeader On
>Options +ExecCGI
>
>
> I've even tried with PerlSendHeader Off and adding "HTTP 1/1 200 OK" headers
> with the same result -- jpegs work fine, PNG does not...
>
> Clues? I suspect it's a problem with the PNG production and some intereaction
> between mod_perl and the headers that stock Apache doesn't encounter, but will
> be most interested if there might be another explanation or solution.
>
> Thanks,
> Adi
>