cloudflare--workers-sdk/fixtures/container-app/container/simple-node-app.js

const { createServer } = require("http");

const webSocketEnabled = process.env.WS_ENABLED === "true";

// Create HTTP server
const server = createServer(function (req, res) {
	if (req.url === "/ws") {
		// WebSocket upgrade will be handled by the WebSocket server
		return;
	}

	res.writeHead(200, { "Content-Type": "text/plain" });
	res.write("Hello World! Have an env var! " + process.env.MESSAGE);
	res.end();
});

// Check if WebSocket functionality is enabled
if (webSocketEnabled) {
	const WebSocket = require("ws");

	// Create WebSocket server
	const wss = new WebSocket.Server({
		server: server,
		path: "/ws",
	});

	wss.on("connection", function connection(ws) {
		console.log("WebSocket connection established");

		ws.on("message", function message(data) {
			console.log("Received:", data.toString());
			// Echo the message back with prefix
			ws.send("Echo: " + data.toString());
		});

		ws.on("close", function close() {
			console.log("WebSocket connection closed");
		});

		ws.on("error", console.error);
	});
}

server.listen(8080, function () {
	console.log("Server listening on port 8080");
	if (webSocketEnabled) {
		console.log("WebSocket support enabled");
	}
});