When I wrote CGI::Application::Server I used the source code from HTTP::Server::Simple::Kwiki as my guide, it helped quite a lot.

Of course it all depends on how robust or complex you want your self contained server to be. A simple server with little or no error checking is really easy, a full fledged server which is robust in the face of bad HTTP input is much more difficult.

For instance, here is a simple (5 line) server "framework" which I have used in the past for quick stuff.

package Foo::Server;
use HTTP::Server::Simple::CGI;
our @ISA = qw(HTTP::Server::Simple::CGI);
our $CALLBACK;
sub handle_request { $CALLBACK->(@_) }
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The usage is as simple as:

    
$Foo::Server::CALLBACK = sub {  
    my ($server, $cgi) = @_;
    print "Hello " . ($cgi->param('name') || 'World') 
};
Foo::Server->new()->run();
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