text: 'use strict';
  
  const common = require('../common');
  const assert = require('assert');
  const dgram = require('dgram');
  
  const client = dgram.createSocket('udp4');
  
  const buf = Buffer.allocUnsafe(256);
  
  const onMessage = common.mustSucceed((bytes) => {
    assert.strictEqual(bytes, buf.length);
    client.close();
  });
  
  client.bind(0, () => client.send(buf,
                                   client.address().port,
                                   common.localhostIPv4,
                                   onMessage));
  