aaac7fed
 liuqimichale
add
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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, JSON3 = require('json3')
, objectUtils = require('./utils/object')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:info-ajax');
}
function InfoAjax(url, AjaxObject) {
EventEmitter.call(this);
var self = this;
var t0 = +new Date();
this.xo = new AjaxObject('GET', url);
this.xo.once('finish', function(status, text) {
var info, rtt;
if (status === 200) {
rtt = (+new Date()) - t0;
if (text) {
try {
info = JSON3.parse(text);
} catch (e) {
debug('bad json', text);
}
}
if (!objectUtils.isObject(info)) {
info = {};
}
}
self.emit('finish', info, rtt);
self.removeAllListeners();
});
}
inherits(InfoAjax, EventEmitter);
InfoAjax.prototype.close = function() {
this.removeAllListeners();
this.xo.close();
};
module.exports = InfoAjax;
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