Monitoring the server using pm2 indicates a memory leak. The memory usage increased and didn't decrease. Not even when stopping broadcaster.js

broadcaster.js

var io = require('socket.io-client');

var PORT = 6000;
var socket = io.connect('http://localhost:'+PORT,{forceNew:true});

socket.once('connect',function() {
  console.log("connected");
  setInterval(function() {
    console.log("emit image");
    for(var i=0;i<100;i++) {
      socket.emit('image', {name: "bob"});
    }
  },100);
});

server.js

var http = require('http').Server();
var io = require('socket.io')(http);

var PORT = 6000;

http.listen(PORT, function(){
  console.log('server listening on *:' + PORT);
});

var nsp = io.of('/');
nsp.on('connection', onConnection);

function onConnection(socket) {
  console.log("new connection");
  socket.on('image', onImage);
}

function onImage(data) {  
//  console.log("on image: ",data);
}