My fork of airsonic with experimental fixes and improvements. See branch "custom"
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airsonic-custom/documentation/PROXY.md

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# Setting up a reverse proxy
A reverse proxy is a public-facing web server sitting in front of an internal
server such as Libresonic. The Libresonic server never communicates with the
outside ; instead, the reverse proxy handles all HTTP(S) requests and forwards
them to Libresonic.
This is useful in many ways, such as gathering all web configuration in the
same place. It also handles some options (HTTPS) much better than the bundled
Libresonic server or a servlet container such as Tomcat.
This guide assumes you already have a working Libresonic installation after
following the [installation guide](documentation/INSTALL.md).
## Getting a TLS certificate
This guide assumes you already have a TLS certificate. [Let's
Encrypt](https://letsencrypt.org) currently provides such certificates for
free.
## Libresonic configuration
A few settings should be tweaked via Spring Boot or Tomcat
configuration:
- Set the context path to `/libresonic`
- Set the correct address to listen to
- Set the correct port to listen to
#### Spring Boot
Add the following java args:
```java -Dserver.port=4040 -Dserver.address=127.0.0.1 -Dserver.contextPath=/libresonic -jar libresonic.war```
#### Tomcat
Modify your `<Connector>` with the proper address and port:
```
<Connector
port="4040"
address="127.0.0.1"
...
```
See [HTTP Connector](https://tomcat.apache.org/tomcat-7.0-doc/config/http.html) for further detail.
For the context path, tomcat will automatically deploy to a context path matching your war name. So if you're using
libresonic.war, you do not need to change anything.
## Reverse proxy configuration
### Nginx
The following configuration works for Nginx (HTTPS with HTTP redirection):
```nginx
# Redirect HTTP to HTTPS
server {
listen 80;
server_name example.com;
return 301 https://$server_name$request_uri;
}
server {
# Setup HTTPS certificates
listen 443 default ssl;
server_name example.com;
ssl_certificate cert.pem;
ssl_certificate_key key.pem;
# Proxy to the Libresonic server
location /libresonic {
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 $http_host;
proxy_max_temp_file_size 0;
proxy_pass http://127.0.0.1:4040;
proxy_redirect http:// https://;
}
}
```
### Apache
The following configuration works for Apache (without HTTPS):
```apache
<VirtualHost *:80>
ServerName example.com
ErrorDocument 404 /404.html
DocumentRoot /var/www
ProxyPass /libresonic http://localhost:4040/libresonic
ProxyPassReverse /libresonic http://localhost:4040/libresonic
</VirtualHost>
```
### HAProxy
The following configuration works for HAProxy 1.7 (HTTPS with HTTP
redirection):
```haproxy
frontend https
# Make sure that we are in HTTP mode so that we can rewrite headers
mode http
# Listen on the HTTPS and HTTP ports
bind :80
bind :443 ssl crt /etc/haproxy/cert_key.pem
# Some useful headers
option httpclose
option forwardfor
# HTTP: Redirect insecure requests to HTTPS
http-request redirect scheme https if !{ ssl_fc }
# HTTPS: Forward requests to the Libresonic backend
acl is_libresonic path_beg -i /libresonic
use_backend libresonic-backend if is_libresonic
backend libresonic-backend
# Make sure that we are in HTTP mode so that we can rewrite headers
mode http
# Rewrite all redirects to use HTTPS, similar to what Nginx does in the
# proxy_redirect directive.
http-response replace-value Location ^http://(.*)$ https://\1
# Forward requests to Libresonic running on localhost on port 4040
server libresonic 127.0.0.1:4040 check
```