Plack::Handler::FCGI - Support Server::Starter

Support Server::Starter to allow hot-deploying in a defacto-standard manner.
It doesn't require Server::Starter module until SERVER_STARTER_PORT env is set.

lib/Plack/Handler/FCGI.pm

@@ -34,6 +34,14 @@ sub run {
     if (-S STDIN) {
         # running from web server. Do nothing
         # Note it should come before listen check because of plackup's default
+    } elsif ($ENV{SERVER_STARTER_PORT}) {
+        # Runing under Server::Starter
+        require Server::Starter;
+        my %socks = %{Server::Starter::server_ports()};
+        if (scalar(keys(%socks)) > 1) {
+            die "More than one socket are specified by Server::Starter";
+        }
+        $sock = (values %socks)[0];
     } elsif ($self->{listen}) {
         my $old_umask = umask;
         unless ($self->{leave_umask}) {
@@ -409,6 +417,14 @@ mod_fcgid:
 
   FcgiPassHeader Authorization
 
+=head2 Server::Starter
+
+This plack handler supports L<Server::Starter> as a superdaemon.
+Simply launch plackup from start_server with a path option.
+The listen option is ignored when launched from Server::Starter.
+
+  start_server --path=/tmp/socket -- plackup -s FCGI app.psgi 
+
 =head1 SEE ALSO
 
 L<Plack>