text: 'use strict';
  require('../common');
  const assert = require('assert');
  const dgram = require('dgram');
  const socket = dgram.createSocket('udp4');
  
  socket.bind(0);
  socket.on('listening', function() {
    var result = socket.setTTL(16);
    assert.strictEqual(result, 16);
  
    assert.throws(function() {
      socket.setTTL('foo');
    }, /Argument must be a number/);
  
    socket.close();
  });
  