What it says on the tin. I've got a firewall I don't control, an HTTP proxy I also don't control, and need to rsync files through the web proxy.
I have Googled this to death, but the only things that look like they might work require Corkscrew, which will be an unimaginable amount of paperwork to get approved for use.
Is there an easy way to route an rsync command through an HTTP proxy using ssh authentication?