RE: User abort/stop, modperl 2 and TCP FIN / RST?

Peter Valdemar Mørch wrote on 2012-06-10:
> Hi,
> 
> I'm trying to find out how to detect user hitting 'stop' aka 'abort' in
> modperl 2. I found documentation on how it works in modperl 1 (
> http://perl.apache.org/docs/1.0/guide/debug.html#Detecting_Aborted_Co
> nnections - short version: $r->print returns success and
> $r->connection->aborted tells whether user hit abort ).
> 
> However, I've tested the situation to be quite different in modperl 2:
> 
> When the user hits 'stop', the *second* $r->rflush() generates an
> exception
>> Apache2::RequestIO::rflush: (103) Software caused connection
> as long as ~ 100ms has passed between the two rflush-es.
> 
[...]
> Using standard Debian squeeze packages:
>> dpkg-query -W | grep apache2
> apache2	2.2.16-6+squeeze7 apache2-mpm-worker	2.2.16-6+squeeze7
> apache2-utils	2.2.16-6+squeeze7 apache2.2-bin	2.2.16-6+squeeze7
> apache2.2-common	2.2.16-6+squeeze7 libapache2-mod-perl2	2.0.4-7
> libapache2-reload-perl	0.10-2


I notice that you're using mod_perl-2.0.4. The behaviour of rflush() was changed in mod_perl-2.0.6 so that it no longer throws an exception on reset/aborted connections, so it would certainly be worth upgrading to 2.0.6 or 2.0.7 to see if that helps you.