Learn about Fastly Compute with WebSockets using a basic starter that sends connections to a backend.
Note: The WebSockets feature handles passthrough connections only. If you want to handle WebSocket connections from clients without having to run a WebSocket backend, see the Fanout Starter Kit.
For more details about this and other starter kits for Compute, see the Fastly Documentation Hub.
The app expects a configured backend named backend that points to a WebSocket server. For example, if the WebSocket server is available at domain websockets.example.com, then you'll need to create a backend on your Compute service named backend with the destination host set to websockets.example.com and port 443. Also set 'Override Host' to the same host value.
After deploying the app and setting up the backend configuration, all connections received by the service will be passed to the backend.
This app is not currently supported in Fastly's local development server, as the development server does not support WebSockets features. To experiment with WebSockets, you will need to publish this project to your Fastly Compute service, using the fastly compute publish command.
Please see SECURITY.md for guidance on reporting security-related issues.