Synchronized subscriber in Node.js
var zmq = require('zmq')
var subscriber = zmq.socket('sub')
var client = zmq.socket('req')
subscriber.on('message', function(reply) {
console.log('Received message: ', reply.toString());
})
subscriber.connect('tcp://localhost:8688')
subscriber.subscribe('')
client.connect('tcp://localhost:8888')
client.send('SYNC')
process.on('SIGINT', function() {
subscriber.close()
client.close()
})