Proxy Protocol is implemented by various software including of course HAProxy itself.
When testing from a host via a proxy, it would be useful to have a simple command-line tool to establish connections, controlling the various parameters.
I've looked at netcat, socat and other similar tools and it looks like it doesn't (yet) exist.
Does anyone know of a nice command-line testing tool?
As I couldn't find something, here's a start. Will add documentation etc. shortly.