function createWebSocketServer(port) {
        WebSocketTransportDomain.exec("start", parseInt(port, 10));
    }
This transport provides a WebSocket connection between Brackets and a live browser preview.
This is just a thin wrapper around the Node extension (WebSocketTransportDomain) that actually
provides the WebSocket server and handles the communication. We also rely on an injected script in
the browser for the other end of the transport.