What ways have you tried? I'm sure you know these two pieces of info are in the standard apache.log where you can parse them out easily. If you mean in real time within mod_perl to do something with:

 
use Apache2::RequestRec ();
use Apache2::Connection ();

sub handler {
    my $r = shift;
    # the path portion of the URI
    my $uri = $r->uri();
    # the connection object
    my $c = $r->connection();
    # from which we get
    my $remote_ip = $c->remote_ip();

    # whatever
}
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