I face funny problem: I have an FreeBSD 8.2 server, and I need to set up web server that wil answer zero (0) length answer to any request. Just '200 OK' and zero body.

Ok, I can setup nginx (and already did that) and set 404 error document to /dev/null, but I think maybe there is more optimal and elegant solution? I know there is nginx module that output 1x1 gif, may there be anything like that for zero-length file?