text: // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  'use strict';
  const common = require('../common');
  const http = require('http');
  
  // Sending `agent: false` when `port: null` is also passed in (i.e. the result
  // of a `url.parse()` call with the default port used, 80 or 443), should not
  // result in an assertion error...
  const opts = {
    host: '127.0.0.1',
    port: null,
    path: '/',
    method: 'GET',
    agent: false
  };
  
  // We just want an "error" (no local HTTP server on port 80) or "response"
  // to happen (user happens ot have HTTP server running on port 80).
  // As long as the process doesn't crash from a C++ assertion then we're good.
  const req = http.request(opts);
  
  // Will be called by either the response event or error event, not both
  const oneResponse = common.mustCall();
  req.on('response', oneResponse);
  req.on('error', oneResponse);
  req.end();
  