[Catalyst] Bad gateway error

[Octavian Râşniţă]

Hi,

In Catalyst::Manual::Cookbook I read

        # 502 is a Bad Gateway error, and will occur if the backend server 
is down
        # This allows us to display a friendly static page that says "down 
for
        # maintenance"
        Alias /_errors /var/www/MyApp/root/error-pages
        ErrorDocument 502 /_errors/502.html
...

I've configured Apache this way, but if I stop the external Catalyst fastcgi 
app, instead of giving this HTTP error, it gives a 500 error, and in the 
logs I find:

[Sat May 02 12:24:23 2009] [error] [client 89.122.248.135] (2)No such file 
or directory: FastCGI: failed to connect to server "/tmp/tb.fcgi": connect() 
failed
[Sat May 02 12:24:23 2009] [error] [client 89.122.248.135] FastCGI: 
incomplete headers (0 bytes) received from server "/tmp/tb.fcgi"

Do I need to do something more to make Apache give the 502 error?

Thank you.

Octavian