ZeroMQ Async Weirdness

client.js

var zmq = require('zmq')

function sockit(name){
	var sock = zmq.socket('req');
	sock.connect('tcp://127.0.0.1:9000');
	sock.on('message', function(res){
		console.log("%s: %s",name,res.toString())
	});
	return sock;
}

sockit('one').send( JSON.stringify({timeout:5000,name:'one'}) )
sockit('two').send( JSON.stringify({timeout:1000,name:'two'}) )
sockit('thr').send( JSON.stringify({timeout:0,name:'thr'}) )

console.out

14:23:20 server.1 |  Received: one
14:23:25 server.1 |  Received: two
14:23:25 client.1 |  one: one
14:23:26 server.1 |  Received: thr

server.js

var zmq = require('zmq')
var sock = zmq.socket('rep');

sock.bindSync('tcp://127.0.0.1:9000');
sock.on('message', function(res){
	
	var message = JSON.parse(res)
	
	console.log("Received:",message.name)
	
	var timeout = message.timeout;
	var name    = message.name;
	
	setTimeout(function(){
		sock.send(name);
	},timeout);

});