Add socket.io server code

index.js

@@ -0,0 +1,44 @@
+'use strict';
+const io = require('socket.io').listen(50000);
+
+io.sockets.on('connection', socket => {
+
+    socket.emit('connection', {
+        type : 'connected'
+    });
+
+    socket.on('connection', data => {
+
+        if(data.type === 'join') {
+
+            socket.join(data.room);
+
+            // depracated
+            // socket.set('room', data.room);
+            socket.room = data.room;
+
+            socket.emit('system', {
+                message : 'welcome to chat room'
+            });
+
+            socket.broadcast.to(data.room).emit('system', {
+                message : `${data.name} is connected`
+            });
+        }
+
+    });
+
+    socket.on('user', data => {
+
+        // depracated
+        // socket.get('room', (error, room) => {
+        // });
+
+        var room = socket.room;
+
+        if(room) {
+            socket.broadcast.to(room).emit('message', data);
+        }
+    });
+
+});