Subsonic Proxy

Today's goal is to update Subsonic and Nginx so that all requests for Subsonic come through Nginx.  The reason for this is two-fold.

1. I can use the same port (ssl 443) and URL (www.domain.com) for all my server apps.  Thus I don't need to poke a hole in my NAT to forward new ports, and users don't have to remember special ports.
2. I can use the same SSL certificate for all my server apps, and it is a officially signed certificate, unlike the self-signed that comes with subsonic.

So, first step is to configure Subsonic.  I know that my Subsonic is going to be under the subdomain https://www.domain.com/subsonic, so I need to specify the context-path variable in the configuration.  Also, I still need to run Subsonic on a different port, I will just have Nginx redirect requests to this port.  Lastly, I will increase the max-memory available to Subsonic a bit to have a few more resources. To start, open the startup script for Subsonic

sudo vi /etc/default/subsonic

and change the args to

SUBSONIC_ARGS="--context-path=/subsonic --port=8080 --https-port=0 --max-memory=300"

Finally, for security reasons, change the user for Subsonic from root to www-data, the default user for Nginx. Make sure the permissions on your media files are set to allow this user.

SUBSONIC_USER=www-data

Next step is to configure Nginx.  Open the config

sudo vi /etc/nginx/sites-enabled/default

Then add the following section to the server section for port 443. We need to fix up some headers, and make sure that https is properly redirected.

location ^~ /subsonic/ {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header Host $http_host;
        proxy_max_temp_file_size 0;
        proxy_pass http://localhost:8080;
        proxy_redirect http:// https://;
}

Then just restart both services, and you should be able to access Subsonic via http://www.domain.com/subsonic

sudo service restart nginx
sudo service restart subsonic