zeromq-port/examples/push_pull.js

Bindings for node.js to zeromq 2.x, 3.x versions

/*
 *
 * Pipeline
 *
 */

var cluster = require('cluster')
  , zmq = require('../')
  , port = 'tcp://127.0.0.1:12345';

if (cluster.isMaster) {
  for (var i = 0; i < 2; i++) cluster.fork();

  cluster.on('death', function(worker) {
    console.log('worker ' + worker.pid + ' died');
  });
  
  //push = upstream
  
  var socket = zmq.socket('push');

  socket.identity = 'upstream' + process.pid;

  socket.bind(port, function(err) {
    if (err) throw err;
    console.log('bound!');

    setInterval(function() {
      var date = new Date();

      console.log(socket.identity + ': sending data ' + date.toString());
      socket.send(date.toString());
    }, 500);
  });
} else {
  //pull = downstream
  
  var socket = zmq.socket('pull');

  socket.identity = 'downstream' + process.pid;
  
  socket.connect(port);
  console.log('connected!');

  socket.on('message', function(data) {
    console.log(socket.identity + ': received data ' + data.toString());
  });
}