bm-create-enc-payload/index.js

// Send newly generated message via a MiNode process running in background

const objects = require('bitmessage').objects,
      Address = require('bitmessage').Address;

const { spawn } = require('child_process');
const zmq = require('zeromq');

(async () => {
  const sock = zmq.socket('pub');

  sock.bindSync('tcp://127.0.0.1:5566');
  console.log('Publisher bound to port 5566');

  spawn(
    'minode', ['--request-queue', 'tcp://127.0.0.1:5566'],
    {timeout: 100000, killSignal: 'SIGTERM', detached: true, stdio: 'inherit'}
  ).on('exit', (c, s) => {
    sock.close();
  });

  const sender = Address.fromRandom(),
	recipient = Address.fromPassphrase('test');
  console.log('sender:', sender.encode());
  console.log('recipient:', recipient.encode());

  objects.msg.encodePayloadAsync({
    ttl: 1800,
    from: sender,
    to: recipient,
    message: 'The quick brown fox jumps over the lazy dog.',
    subject: 'hello',
    encoding: 2
  }).then(function (msg) {
    console.log('msg:', msg.toString('hex'));
    console.log('Sending the msg...');
    sock.send(Buffer.concat([
      Buffer.from('msg', 'ascii'), Buffer.from('00', 'hex'), msg
    ]));
  });

})();