import WebSocket, {WebSocketServer} from 'ws'

try {
	const server = new WebSocketServer({
		port: 3001,
		perMessageDeflate: {
			zlibDeflateOptions: {
				// See zlib defaults.
				chunkSize: 1024,
				memLevel: 7,
				level: 3
			},
			zlibInflateOptions: {
				chunkSize: 10 * 1024
			},
			// Other options settable:
			clientNoContextTakeover: true, // Defaults to negotiated value.
			serverNoContextTakeover: true, // Defaults to negotiated value.
			serverMaxWindowBits: 10, // Defaults to negotiated value.
			// Below options specified as default values.
			concurrencyLimit: 10, // Limits zlib concurrency for perf.
			threshold: 1024 // Size (in bytes) below which messages
			// should not be compressed if context takeover is disabled.
		}
	})

	server.on('connection', function connection(socket) {
		socket.on('message', function message(data) {
			console.log("received: %s", data)
			socket.send("pong")
		})
	})
}
catch(e) {
	console.log(e);
}