On Thu, Jul 10, 2014 at 11:20 AM, Tom Phan <yachtus-apa...@yahoo.com.invalid > wrote:
> My web server: FreeBSD 10.0, Apache 2.4, Perl 5.16, HTML::Template::Pro > 0.9510 > > When I try to run any perl script calling HTML::Template::Pro templates > larger than 8,191 bytes, I get following error in httpd: > > [cgid:error] malformed header from script 'test.pl': Bad header: > <!doctype html> > > Running the script from command line does produce the expected output and > no error, so I am assuming the cause of the error is related to Apache. > > > Here is the simple perl script 'test.pl' that I tested with: > > #!/usr/bin/perl > use strict; > use HTML::Template::Pro; > my $tmpl = HTML::Template::Pro -> new(filename => 'test.tmpl'); > print "Content-Type: text/html\n\n"; > $tmpl -> output(); > > ..and the HTML::Template::Pro template 'test.tmpl': > > <!doctype html> > <html> > <body> > <p>blah blah</p> > </body> > </html> > > I ran test.pl in the browser and everything was fine at first, no error. > Then I started adding a lot of blah blahs to the template file until the > size of the template file hit exactly 8,192 bytes, at which time it crashed > with a 500 and with the above error logged in the httpd-error.log. If I > delete even a single character from the template file so it goes below 8K, > the script runs again. I have absolutely no idea why this happens. By the > way, large html files do not crash Apache, nor do Perl scripts printing > html code directly (without HTML::Template::Pro. I tried both to the > extreme, creating MBs of html code and wasn't able to crash anything at all. > > If I switch to mod_cgi instead of mod_cgid, the error appears exactly when > template file hits 4K in size. So it is 8K for mod_cgid and 4K for mod_cgi. > > What is it in Apache that imposes such limits on the size of my templates > and how can I lift/increase them? > > Can you capture the output of the CGI process run under httpd at least up to the point of the "<!doctype html>" text? I'd guess you are "suffering from buffering" somehow, and the threshhold is a different value with mod_cgid vs mod_cgi. -- Born in Roswell... married an alien... http://emptyhammock.com/
