URL fetch purge method?

[Peter Warren]

Is there any way for me to send an HTTP PURGE request from app engine?

The URL fetch docs seem to indicate that I can't. Is there another way?

I'm trying to dynamically clear the cache in a remote caching reverse proxy and need to send a request like this:

PURGE / HTTP/1.0
Host: example.com

Alternatively I can set up a remote service as a proxy to receive a GET from app engine and then send the PURGE request. It's clunky to add a middle-man though if I don't need to.

Thanks,
Peter