node/test/parallel/test-cluster-disconnect-unshared-udp.js

// Copyright Joyent, Inc. and other Node contributors.
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'use strict';

const common = require('../common');

if (common.isWindows)
  common.skip('on windows, because clustered dgram is ENOTSUP');

const cluster = require('cluster');
const dgram = require('dgram');

if (cluster.isMaster) {
  const unbound = cluster.fork().on('online', bind);

  function bind() {
    cluster.fork({BOUND: 'y'}).on('listening', disconnect);
  }

  function disconnect() {
    unbound.disconnect();
    unbound.on('disconnect', cluster.disconnect);
  }
} else {
  if (process.env.BOUND === 'y') {
    const source = dgram.createSocket('udp4');

    source.bind(0);
  }
}