text: // Creat PUSH socket
  const socket = require('zmq').socket(`push`);
  const address = process.env.ZMQ_BIND_ADDRESS || `tcp://*:3000`;
  
  console.log(`Listening at ${address}`);
  socket.bindSync(address);
  
  setInterval(() => {
    const msg = `Ping`;
    console.log(`Sending ${msg}`);
    socket.send(msg);
  }, 2000);
  