implement a model of WebSocket and ws based on the EventEmitter model

javascript/ql/test/library-tests/frameworks/WebSocket/server.js

@@ -0,0 +1,13 @@
+(function () {
+	const WebSocket = require('ws');
+
+	const wss = new WebSocket.Server({ port: 8080 });
+
+	wss.on('connection', function connection(ws) {
+  		ws.on('message', function incoming(message) {
+    		console.log('received: %s', message);
+  		});
+
+  		ws.send('Hi from server!');
+	});
+})();