aaac7fed
 liuqimichale
add
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'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 errors
var inherits = require('inherits')
, SenderReceiver = require('./lib/sender-receiver')
, JsonpReceiver = require('./receiver/jsonp')
, jsonpSender = require('./sender/jsonp')
;
function JsonPTransport(transUrl) {
if (!JsonPTransport.enabled()) {
throw new Error('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;
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