Haproxy
This is a straightforward example of how to setup a DNS name based HAProxy setup for OliveTin.
/etc/haproxy/haproxy.conf
frontend cleartext_frontend
bind 0.0.0.0:80
option httplog
use_backend be_olivetin_webs if { hdr(Host) -i olivetin.example.com && path_beg /websocket }
use_backend be_olivetin_http if { hdr(Host) -i olivetin.example.com }
backend be_olivetin_http
server olivetinServer 127.0.0.1:1337 check
backend be_olivetin_webs
timeout tunnel 1h
option http-server-close
server olivetinServer 127.0.0.1:1337