emit message

server.js

@@ -28,6 +28,10 @@ io.on('connection', socket => {
     socket.join(roomId)
     socket.to(roomId).emit('user-connected', userId)
 
+    socket.on('message', (msg) => {
+      socket.to(roomId).emit('message', msg)
+    })
+
     socket.on('disconnect', () => {
       socket.to(roomId).emit('user-disconnected', userId)
       const index = connectedClients[roomId].indexOf(socket.id)