<body>
<script src="https://unpkg.com/mithril@2.0.4/mithril.min.js"></script>
<script src="https://unpkg.com/socket.io-client@4.3.2/dist/socket.io.min.js"></script>
+
+ <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.3.0/socket.io.js"></script>-->
+
<script src="rpsls.js"></script>
</body>
</html>