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		<h1 class="page-title">Source: net/Net.js</h1>
    
    <section>
        <article>
            <pre class="sunlight-highlight-javascript linenums">/**
* @author       Richard Davey &lt;rich@photonstorm.com>
* @copyright    2014 Photon Storm Ltd.
* @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/

/**
* Phaser.Net handles browser URL related tasks such as checking host names, domain names and query string manipulation.
*
* @class Phaser.Net
* @constructor
* @param {Phaser.Game} game - A reference to the currently running game.
*/
Phaser.Net = function (game) {
    
    this.game = game;

};

Phaser.Net.prototype = {

    /**
    * Returns the hostname given by the browser.
    * 
    * @method Phaser.Net#getHostName
    * @return {string}
    */
    getHostName: function () {

        if (window.location && window.location.hostname) {
            return window.location.hostname;
        }

        return null;

    },

    /**
    * Compares the given domain name against the hostname of the browser containing the game.
    * If the domain name is found it returns true.
    * You can specify a part of a domain, for example 'google' would match 'google.com', 'google.co.uk', etc.
    * Do not include 'http://' at the start.
    * 
    * @method Phaser.Net#checkDomainName
    * @param {string} domain
    * @return {boolean} true if the given domain fragment can be found in the window.location.hostname
    */
    checkDomainName: function (domain) {
        return window.location.hostname.indexOf(domain) !== -1;
    },

    /**
    * Updates a value on the Query String and returns it in full.
    * If the value doesn't already exist it is set.
    * If the value exists it is replaced with the new value given. If you don't provide a new value it is removed from the query string.
    * Optionally you can redirect to the new url, or just return it as a string.
    * 
    * @method Phaser.Net#updateQueryString
    * @param {string} key - The querystring key to update.
    * @param {string} value - The new value to be set. If it already exists it will be replaced.
    * @param {boolean} redirect - If true the browser will issue a redirect to the url with the new querystring.
    * @param {string} url - The URL to modify. If none is given it uses window.location.href.
    * @return {string} If redirect is false then the modified url and query string is returned.
    */
    updateQueryString: function (key, value, redirect, url) {

        if (typeof redirect === "undefined") { redirect = false; }
        if (typeof url === "undefined" || url === '') { url = window.location.href; }

        var output = '';
        var re = new RegExp("([?|&])" + key + "=.*?(&|#|$)(.*)", "gi");
        
        if (re.test(url))
        {
            if (typeof value !== 'undefined' && value !== null)
            {
                output = url.replace(re, '$1' + key + "=" + value + '$2$3');
            }
            else
            {
                output = url.replace(re, '$1$3').replace(/(&|\?)$/, '');
            }
        }
        else
        {
            if (typeof value !== 'undefined' && value !== null)
            {
                var separator = url.indexOf('?') !== -1 ? '&' : '?';
                var hash = url.split('#');
                url = hash[0] + separator + key + '=' + value;

                if (hash[1]) {
                    url += '#' + hash[1];
                }

                output = url;

            }
            else
            {
                output = url;
            }
        }

        if (redirect)
        {
            window.location.href = output;
        }
        else
        {
            return output;
        }

    },

    /**
    * Returns the Query String as an object.
    * If you specify a parameter it will return just the value of that parameter, should it exist.
    * 
    * @method Phaser.Net#getQueryString
    * @param {string} [parameter=''] - If specified this will return just the value for that key.
    * @return {string|object} An object containing the key value pairs found in the query string or just the value if a parameter was given.
    */
    getQueryString: function (parameter) {

        if (typeof parameter === "undefined") { parameter = ''; }

        var output = {};
        var keyValues = location.search.substring(1).split('&');

        for (var i in keyValues)
        {
            var key = keyValues[i].split('=');

            if (key.length > 1)
            {
                if (parameter && parameter == this.decodeURI(key[0]))
                {
                    return this.decodeURI(key[1]);
                }
                else
                {
                    output[this.decodeURI(key[0])] = this.decodeURI(key[1]);
                }
            }
        }

        return output;

    },

    /**
    * Returns the Query String as an object.
    * If you specify a parameter it will return just the value of that parameter, should it exist.
    * 
    * @method Phaser.Net#decodeURI
    * @param {string} value - The URI component to be decoded.
    * @return {string} The decoded value.
    */
    decodeURI: function (value) {
        return decodeURIComponent(value.replace(/\+/g, " "));
    }

};

Phaser.Net.prototype.constructor = Phaser.Net;
</pre>
        </article>
    </section>


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