Source: ptolemy/actor/lib/jjs/modules/geolocation/geolocation.js

// geolocation module for CapeCode accessors host.
// 
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// Copyright (c) 2015-2016 The Regents of the University of California.
// All rights reserved.
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/** Module for retrieving geolocation information, based on the device's
 *  IP address. An http get request returns the position.
 *  The exported function is 'getPosition', that has as parameters:
 *  ** the function to execute in case of success,
 *  ** the function to execute in case an error occured
 *  ** and the options, not applicable in this case.
 *  
 *  If the status code of the response is OK (200) then a location object, 
 *  with longitude, latitude, accuracy and timestamp attributes, is passed 
 *  to the caller onSuccess function. In case of error, the caller onError
 *  function is called on the error.
 *
 *  @module geolocation
 *  @author Chadlia Jerad
 *  @version $$Id: geolocation.js 75980 2017-07-18 00:19:25Z chadlia.jerad $$
 */

var httpClient = require('@accessors-modules/httpClient');

exports.getPosition = function(onSuccess, onError, options) {

	httpClient.get('https://ipinfo.io/json', function(response) {
		if (response.statusCode == 200) {
			var location = {};
			var loc = JSON.parse(response.body).loc;
			loc = loc.split(',');
			location.latitude = Number(loc[0]);
			location.longitude = Number(loc[1]);
		   	location.accuracy = 'low';  
		   	location.timestamp = response.headers.date;
			onSuccess.call(this, location);
		} else {
			onError.call(this, response.statusCode);
		};
	});
}