update documentation

docs/configuration.md

@@ -7,8 +7,32 @@ the following options are available:
 |---|---|
 |admin.password|the admin password for the race admin|
 |shutdown.machine|if a shutdown command using webui is made shutdown the operating system as well|
-|audio.language|language to use for speech output. usa a BCP 47 language tag here, e.g. en-US or en-UK or de-DE|
 |server.port|webserver port to use (should be 80)|
+|network.server.ip|ip address to listen for udp packets by the node (optional, see extra section)|
+|network.server.broadcast|broadcast ip address to listen for udp packets by the node (optional, see extra section)|
+
+## network configuration
+you need to configure the ip and broadcast addresses the server should listen to.
+
+this can be either done using the ip addresses or the network interface names for easier configuration.
+
+if you don't provide `network.server.ip` and `network.server.broadcast` in your configuration it defaults to `GET_FROM_wlan0`.
+
+### configuration by ip address
+simply give the ip addresses:
+```
+network.server.ip=192.168.1.5
+network.server.broadcast=192.168.1.255
+```
+
+### configuration by network interface name
+configuration using the network interface names is more generic. instead of an ip address you give a string like `GET_FROM_wlan0`. 
+the ip address configuration is then fetched from the interface wlan0 (default on rpi for wifi). 
+you can give whatever name is needed, e.g. `GET_FROM_enp0s32e6` or `GET_FROM_wlx74da285ed9a3`.
+```
+network.server.ip=GET_FROM_wlan0
+network.server.broadcast=GET_FROM_wlan0
+```
 
 
 ## example
@@ -17,5 +41,6 @@ example application.properties file
 admin.password=admin
 audio.playLocal=false
 shutdown.machine=false
-audio.language=de-DE
+network.server.ip=GET_FROM_wlan0
+network.server.broadcast=GET_FROM_wlan0
 ```

web/release_files/application.properties

@@ -7,9 +7,6 @@ shutdown.machine=true
 # port the web server is listening to
 server.port=80
 
-# speech language
-audio.language=en-US
-
 # ip to listen for udp packets by the nodes, can be an IP address or a
 # string "GET_FROM_<interface>" to get from network interface on startup, e.g.
 # GET_FROM_wlan0

web/webpage/src/app/settings/settings.component.html

@@ -86,7 +86,7 @@
                     <label for="audioLanguage">audio language</label>
                     <input class="form-control" type="text" name="audioLanguage" [(ngModel)]="data.audioLanguage" required
                         aria-describedby="audioLanguageHelp" />
-                    <small id="audioLanguageHelp" class="form-text text-muted">sets the audio language.</small>
+                    <small id="audioLanguageHelp" class="form-text text-muted">sets the audio language, usa a BCP 47 language tag (e.g. en-US or en-UK or de-DE).</small>
                 </div>
                 <button [disabled]="storing" (click)="storeSettings()" class="btn btn-outline-secondary">save</button>
                 <br /><br />