node_modules/sockjs-client/lib/transport/lib/iframe-wrap.js

'use strict';

var inherits = require('inherits')
  , IframeTransport = require('../iframe')
  , objectUtils = require('../../utils/object')
  ;

module.exports = function(transport) {

  function IframeWrapTransport(transUrl, baseUrl) {
    IframeTransport.call(this, transport.transportName, transUrl, baseUrl);
  }

  inherits(IframeWrapTransport, IframeTransport);

  IframeWrapTransport.enabled = function(url, info) {
    if (!global.document) {
      return false;
    }

    var iframeInfo = objectUtils.extend({}, info);
    iframeInfo.sameOrigin = true;
    return transport.enabled(iframeInfo) && IframeTransport.enabled();
  };

  IframeWrapTransport.transportName = 'iframe-' + transport.transportName;
  IframeWrapTransport.needBody = true;
  IframeWrapTransport.roundTrips = IframeTransport.roundTrips + transport.roundTrips - 1; // html, javascript (2) + transport - no CORS (1)

  IframeWrapTransport.facadeTransport = transport;

  return IframeWrapTransport;
};