Pomoc rTorrent-Pro never asks password to connect to Web UI when connect through ReverseProxy on localhost

OK, I’ll give it a try when I arrive at home.
I’ll keep you in touch.
Thanks.

So, I tried the beta version and still the issue.
But I also tried the direct access to url using https://ip:6008 because this time I was at home, and I was asked the password.
So I reinstalled version 0.9.6-0419 and tried access to https://ip:6008, and again I was asked the password.
So the issue is with my nginx configuration.

Thanks Silas for your quick answer and sorry for disturbing you.
Now I must find out what I did recently with my f*****g nginx conf. hmmm

So, I didn't have a lot of time to find out what was going on with basic authentication when using NGinx as a proxy.
But I finally looked at it today and I found out what was the issue.
So I'll explain it for those who have the same problem.

It seems that rtorrent doesn't ask for authentication if the request comes from the same machine.
And apparently, rtorrent does not use headers like 'X-Real-IP' or 'Host' to determine if request originated from the same machine but must, I think, use a method based on which network adapter was used to receive the request.

In my case, my nginx conf had this setup :

location / {
proxy_pass https://localhost:6008;
}

I just had to replace it by the following and voilà, I was asked for my login/password again :

location / {
proxy_pass https://192.168.0.1:6008;
}