Move common 'forward headers' proxy section in the prerequisites

proxy/apache.md

@@ -75,23 +75,6 @@ Restart the `apache2` service:
 sudo systemctl restart apache2.service
 ```
 
-#### Forward headers
-
-You will also need to make sure Airsonic uses the correct headers for redirects, by setting the `server.use-forward-headers` property to `true`.
-
-To do so, stop your Airsonic server or Docker image, then edit the `config/application.properties` file:
-
-```
-nano /path/to/airsonic/config/application.properties
-```
-
-Add the following line to the bottom of the file:
-```
-server.use-forward-headers=true
-```
-
-Use Ctrl+X to save and exit the file, and restart your Airsonic server or Docker image.
-
 #### Content Security Policy
 
 You may face some `Content-Security-Policy` issues. To fix this, add the following line to your Apache configuration:

proxy/caddy.md

@@ -32,20 +32,3 @@ Check the Caddy config for validity, and then restart the Caddy service:
 caddy -conf /etc/caddy/caddy.conf -validate
 sudo systemctl restart caddy.service
 ```
-
-#### Forward headers
-
-You will also need to make sure Airsonic uses the correct headers for redirects, by setting the `server.use-forward-headers` property to `true`.
-
-To do so, stop your Airsonic server or Docker image, then edit the `config/application.properties` file:
-
-```
-nano /path/to/airsonic/config/airsonic.properties
-```
-
-Add the following line to the bottom of the file:
-```
-server.use-forward-headers=true
-```
-
-Use Ctrl+X to save and exit the file, and restart your Airsonic server or Docker image.

proxy/haproxy.md

@@ -65,20 +65,3 @@ Restart the HAProxy service:
 ```
 sudo systemctl restart haproxy.service
 ```
-
-#### Forward headers
-
-You will also need to make sure Airsonic uses the correct headers for redirects, by setting the `server.use-forward-headers` property to `true`.
-
-To do so, stop your Airsonic server or Docker image, then edit the `config/application.properties` file:
-
-```
-nano /path/to/airsonic/config/application.properties
-```
-
-Add the following line to the bottom of the file:
-```
-server.use-forward-headers=true
-```
-
-Use Ctrl+X to save and exit the file, and restart your Airsonic server or Docker image.

proxy/nginx.md

@@ -84,23 +84,6 @@ Restart the Nginx service:
 sudo systemctl restart nginx.service
 ```
 
-#### Forward headers
-
-You will also need to make sure Airsonic uses the correct headers for redirects, by setting the `server.use-forward-headers` property to `true`.
-
-To do so, stop your Airsonic server or Docker image, then edit the `config/application.properties` file:
-
-```
-nano /path/to/airsonic/config/application.properties
-```
-
-Add the following line to the bottom of the file:
-```
-server.use-forward-headers=true
-```
-
-Use Ctrl+X to save and exit the file, and restart your Airsonic server or Docker image.
-
 #### Content Security Policy
 
 You may face some `Content-Security-Policy` issues. To fix this, add the following line to your Nginx configuration:

proxy/prerequisites.md

@@ -15,6 +15,8 @@ This guide assumes you already have a TLS certificate. [Let's Encrypt](https://l
 
 ### Configure Airsonic
 
+##### Basic configuration
+
 A few settings should be tweaked via Spring Boot or Tomcat
 configuration:
 
@@ -27,6 +29,23 @@ To change this, please use one of the guide below according to your installation
 - [Tomcat](/docs/configure/tomcat/)
 - [Standalone](/docs/configure/standalone/)
 
+##### Forward headers
+
+You will also need to make sure Airsonic uses the correct headers for redirects, by setting the `server.use-forward-headers` property to `true`.
+
+To do so, stop your Airsonic server or Docker image, then edit the `config/application.properties` file:
+
+```
+nano /path/to/airsonic/config/application.properties
+```
+
+Add the following line to the bottom of the file:
+```
+server.use-forward-headers=true
+```
+
+Use Ctrl+X to save and exit the file, and restart your Airsonic server or Docker image.
+
 ### Reverse proxy configuration
 
 ##### How it works