50 lines
1 KiB
JavaScript
50 lines
1 KiB
JavaScript
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'use strict';
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var EventEmitter = require('events').EventEmitter
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, inherits = require('inherits')
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, JSON3 = require('json3')
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, objectUtils = require('./utils/object')
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;
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var debug = function() {};
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if (process.env.NODE_ENV !== 'production') {
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debug = require('debug')('sockjs-client:info-ajax');
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}
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function InfoAjax(url, AjaxObject) {
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EventEmitter.call(this);
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var self = this;
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var t0 = +new Date();
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this.xo = new AjaxObject('GET', url);
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this.xo.once('finish', function(status, text) {
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var info, rtt;
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if (status === 200) {
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rtt = (+new Date()) - t0;
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if (text) {
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try {
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info = JSON3.parse(text);
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} catch (e) {
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debug('bad json', text);
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}
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}
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if (!objectUtils.isObject(info)) {
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info = {};
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}
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}
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self.emit('finish', info, rtt);
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self.removeAllListeners();
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});
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}
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inherits(InfoAjax, EventEmitter);
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InfoAjax.prototype.close = function() {
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this.removeAllListeners();
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this.xo.close();
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};
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module.exports = InfoAjax;
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