Socket.io with rest-client realtime

i'm totally new in socket.io. In this case i'm trying to get response from my own REST. Why Socket.io can't rendering new resource when i create some resource in my REST. This is my source code. I'm using rest-client library for consume my RESTfull

//app.js
...
io.on('connection', function(socket){
client.get("http://localhost:8001/transaksi", function(data){
    socket.emit('test', data.idtransaksi);
});

And this is my client

//index.html
...
<script>
var socket = io('localhost');
socket.on('test', function(test){
    console.log(test);
});
</script>

And worked afer i refresh the page. But, i want get real-time response.

Sorry for bad grammar

via Ade Firman Fauzi