//Copyright (c) 2017 The Regents of the University of California.
//All rights reserved.
//Permission is hereby granted, without written agreement and without
//license or royalty fees, to use, copy, modify, and distribute this
//software and its documentation for any purpose, provided that the above
//copyright notice and the following two paragraphs appear in all copies
//of this software.
//IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
//FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
//ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
//THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
//SUCH DAMAGE.
//THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
//INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
//MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
//PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
//CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
//ENHANCEMENTS, OR MODIFICATIONS.
/**
* Discover features of the local area network.
*
* @module @accessors-modules/discovery
* @author Christopher Brooks
* @version $$Id$$
*/
//Stop extra messages from jslint. Note that there should be no
//space between the / and the * and global.
/*globals Java, actor, error, exports, IncomingMessage, require, util */
"use strict";
var os = require('os');
exports.DiscoveryService = function () {
// This is called DiscoveryService, because the Cape Code Host has
// ptolemy/actor/lib/jjs/modules/discovery/DiscoveryHelper.java
// However, it might make more sense to follow Node and create
// an os module for Cape Code.
var discoveryService = {};
/** Return the first IPv4 external IP address.
* @return The IP address
*/
this.getHostAddress = function () {
var networkInterfaces = os.networkInterfaces();
for (var interfaceName in networkInterfaces) {
if (networkInterfaces.hasOwnProperty(interfaceName)) {
var networkInterface = networkInterfaces[interfaceName]
for (var i = 0; i < networkInterface.length; i++) {
var subInterface = networkInterface[i];
if ( subInterface.family === 'IPv4' && subInterface.internal === false) {
return subInterface.address;
}
}
}
}
}
//return discoveryService;
}