@mindhive/mock-aws/dist/ports.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.freePort = exports.checkPortInUse = undefined;

var _net = require('net');

var _net2 = _interopRequireDefault(_net);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var checkPortInUse = exports.checkPortInUse = function checkPortInUse(port) {
  return new Promise(function (resolve) {
    var socket = _net2.default.createConnection({ port: port, timeout: 1000 }).once('timeout', function () {
      socket.end();
      resolve(false);
    }).once('error', function () {
      socket.end();
      resolve(false);
    }).once('connect', function () {
      socket.end();
      resolve(true);
    });
  });
};

var freePort = exports.freePort = function freePort() {
  return new Promise(function (resolve, reject) {
    var server = _net2.default.createServer().once('error', function (e) {
      reject(e);
    }).once('listening', function () {
      var _server$address = server.address(),
          port = _server$address.port;

      server.close();
      resolve(port);
    }).listen(0, '0.0.0.0');
  });
};