Luc Didry commented on issue #292 at Fiat Tux / Hat softwares / Lufi

Sorry. Some people already tried to use Lufi behind HaProxy with no luck.

See https://framagit.org/fiat-tux/hat-softwares/lufi/-/issues/?sort=created_date&state=all&search=haproxy&first_page_size=20

I just thought: is it possible for you to use Lufi directly as HaProxy backend instead of going through Nginx? Who knows, it may work.