Get transmission web interface working with web server

I have my working on default port and I want to be able to use the web interface with an URL like http://my.domain/torrents . I tried adding a location and a proxy conf to Nginx but it fail to work fully. I guess it's because of web interface redirections. server { root /data/www; autoindex on; server_name localhost; location / { try_files $uri $uri/ /index.html; } location /torrents/ { proxy_pass_header X-Transmission-Session-Id; proxy_pass http://127.0.0.1:9091 ; } } This conf fail because it can't reach /transmission/rpc (404 /usr/share/transmission/web/rpc) I have tried many things and I always have something missing. transmission/rpc or transmission/upload or transmission/web or transmission/javascript/whatever...