start playing with websockets

src/server/file.ts

@@ -0,0 +1,43 @@
+// Import the framework and instantiate it
+import Fastify from 'fastify'
+import {fastifyWebsocket} from '@fastify/websocket';
+
+const server = Fastify({
+	logger: true
+});
+
+server.register(fastifyWebsocket);
+
+server.get("/api/ws/room", { websocket: true }, function wsHandler (socket) {
+    console.log("Client connected!");
+
+	console.log(socket);
+
+	socket.on('upgrade', () => {
+        console.log('upgraded');
+    });
+
+    socket.on('message', message => {
+        console.log('Message from server:', message);
+        socket.send(`Echo: ${message}`);
+    });
+
+    socket.on('close', () => {
+        console.log('WebSocket connection closed');
+    });
+
+    socket.on('error', error => {
+        console.error('WebSocket error:', error);
+    });
+});
+
+// Run the server!
+try {
+	// Note: host needs to be 0.0.0.0 rather than omitted or localhost, otherwise
+	// it always returns an empty reply when used inside docker...
+	// See: https://github.com/fastify/fastify/issues/935
+	await server.listen({ port: parseInt(process.env["PORT"] ?? "3000"), host: "0.0.0.0" })
+} catch (err) {
+	server.log.error(err)
+	process.exit(1)
+}