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node_modules/sockjs-client/lib/info-iframe-receiver.js 791 Bytes
aaac7fed   liuqimichale   add
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  'use strict';
  
  var inherits = require('inherits')
    , EventEmitter = require('events').EventEmitter
    , JSON3 = require('json3')
    , XHRLocalObject = require('./transport/sender/xhr-local')
    , InfoAjax = require('./info-ajax')
    ;
  
  function InfoReceiverIframe(transUrl) {
    var self = this;
    EventEmitter.call(this);
  
    this.ir = new InfoAjax(transUrl, XHRLocalObject);
    this.ir.once('finish', function(info, rtt) {
      self.ir = null;
      self.emit('message', JSON3.stringify([info, rtt]));
    });
  }
  
  inherits(InfoReceiverIframe, EventEmitter);
  
  InfoReceiverIframe.transportName = 'iframe-info-receiver';
  
  InfoReceiverIframe.prototype.close = function() {
    if (this.ir) {
      this.ir.close();
      this.ir = null;
    }
    this.removeAllListeners();
  };
  
  module.exports = InfoReceiverIframe;