'use strict';// The simplest and most robust transport, using the well-know cross// domain hack - JSONP. This transport is quite inefficient - one// message could use up to one http request. But at least it works almost// everywhere.// Known limitations:// o you will get a spinning cursor// o for Konqueror a dumb timer is needed to detect errorsvarinherits=require('inherits'),SenderReceiver=require('./lib/sender-receiver'),JsonpReceiver=require('./receiver/jsonp'),jsonpSender=require('./sender/jsonp');functionJsonPTransport(transUrl){if(!JsonPTransport.enabled()){thrownewError('Transport created when disabled');}SenderReceiver.call(this,transUrl,'/jsonp',jsonpSender,JsonpReceiver);}inherits(JsonPTransport,SenderReceiver);JsonPTransport.enabled=function(){return!!global.document;};JsonPTransport.transportName='jsonp-polling';JsonPTransport.roundTrips=1;JsonPTransport.needBody=true;module.exports=JsonPTransport;