[cgiapp] Re: Unexpected variable persistence with CAD / CADS

[George Hartzell]

Richard Jones writes:
 > George Hartzell wrote:
 > > Richard Jones writes:
 > >  > Mark Stosberg wrote:
 > >  > 
 > >  > >> It doesn't seem to happen in an identical setup running under mod_perl, 
 > >  > >> so I presume it's a 'feature' of the CAD::Server / HTTP::Server. Is this 
 > >  > >> a known issue, and one of the caveats alluded to in the CAD::Server 
 > >  > >> docs? Never been a problem for anyone else?
 > >  > > 
 > >  > > I haven't used CAD::Server much. Does it also happen with CGI::Application::Server
 > >  > > ( which I think can also work with Dispatch.pm ) ?
 > >  > 
 > >  > Wish I knew. I've never been able to get CA Server working with my 
 > >  > Dispatch subclass. The exact same dispatch table that works in CAD 
 > >  > Server returns either a blank page and no error in the console, or an 
 > >  > error message stating that target must be either a CGI::Application or 
 > >  > CGI::Application::Dispatch subclass, even though they always are. It's 
 > >  > probably something I've mis-configured, but I'll keep at it.
 > >
 > > You didn't actually provide a broken example, so I cobbled one
 > > together that I think does what you're describing, but it doesn't
 > > exhibit the problems you've described.
 > George, the 'wish I knew' reply was to Mark re the CA::Server failure to 
 > ever work. I've traced the problem to the lines in handle_request() 
 > which test $target->isa(), and apparently my targets are neither 
 > CGI::Application nor CGI::Application::Dispatch subclasses! I just 
 > cannot fathom this, [...]

Ahhh.  I've tripped over that sharp edge before.  In public, no less.

Here's my description of what I *thought* was a problem:

  http://lists.openlib.org/pipermail/cgiapp/2008q3/000665.html

and here's me eating my words and instead suggesting a small fix to an
error message so that those of us who encounter said "sharp edge" are
given a bit of gentle guidance:

  http:/lists.openlib.org/pipermail/cgiapp/2008q3/000670.html

If you add a 'use Foo::Dispatch;' up near the top of your foo.pl
instance script, it'll run under CGI::Application::Server (although
there seems to be something goofy with the dispatch table that keeps
it from doing what it should, but at least the server part works...).

g.