The GDK Broadway backend provides support for displaying GTK applications in
a web browser, using HTML5 and web sockets.
-To run your application in this way, select the Broadway backend by setting
-`GDK_BACKEND=broadway`. Then you can make your application appear in a web
-browser by pointing it at `http://127.0.0.1:8080`. Note that you need to
-enable web sockets in your web browser.
-
-You can choose a different port from the default 8080 by setting the
-`BROADWAY_DISPLAY` environment variable to the port that you want to use.
-
-It is also possible to use multiple GTK applications in the same web browser
-window, by using the Broadway server, `gtk4-broadwayd`, that ships with GTK.
-To start the Broadway server use:
+To run your application in this way, first run the broadway server,
+`gtk-broadwayd`, that ships with GTK:
```
gtk4-broadwayd :5
```
+The server expects the colon-prefixed display number as a commandline argument.
+
Then point your web browser at `http://127.0.0.1:8085`.
Once the Broadway server is running, you can start your applications like
GDK_BACKEND=broadway BROADWAY_DISPLAY=:5 gtk4-demo
```
+Multiple applications can be presented in the same web browser window.
+
## Broadway-specific environment variables
### `BROADWAY_DISPLAY`