I know that octopi listens on port 5000 on localhost.
The problem is that I can't do a port forward 'cause my modem's ports under 15000 are blocked, so I've to change port of octopi.
I've tried to modify etc/haproxy/haproxy.cfg's file with a text editor; all goes right but when i try to save i receive and error and file doesn't change.
It's for sure my fault: which is the corrext procedure to solve the problem?