pushpin-proxy(1) on Linux
The text e5ea7068b1a4, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
forwards zmq-http requests to application server (part of pushpin)