+ $_[0]->{'psgix.logger'}->({qw/level debug message/ => $_[1]})
+ };
+ *{"${caller}::reply"} = sub { [200, ['Content-Type' => 'text/plain'], [ @_ ] ] };
+ *{"${caller}::purge"} = sub {
+ return unless $ENV{PURGE_HOST};
+ my $req = HTTP::Request->new(PURGE => "http://$ENV{PURGE_HOST}$_[0]");
+ $ua->request($req)