Sha256: 6f677584975c94ffa9eda3b01210a9f225f8682249dbfb12a67842c631215f7a
Contents?: true
Size: 1.05 KB
Versions: 88
Compression:
Stored size: 1.05 KB
Contents
/**
* Module dependencies
*/
var XMLHttpRequest = require('xmlhttprequest');
var XHR = require('./polling-xhr');
var JSONP = require('./polling-jsonp');
var websocket = require('./websocket');
/**
* Export transports.
*/
exports.polling = polling;
exports.websocket = websocket;
/**
* Polling transport polymorphic constructor.
* Decides on xhr vs jsonp based on feature detection.
*
* @api private
*/
function polling(opts){
var xhr;
var xd = false;
var xs = false;
var jsonp = false !== opts.jsonp;
if (global.location) {
var isSSL = 'https:' == location.protocol;
var port = location.port;
// some user agents have empty `location.port`
if (!port) {
port = isSSL ? 443 : 80;
}
xd = opts.hostname != location.hostname || port != opts.port;
xs = opts.secure != isSSL;
}
opts.xdomain = xd;
opts.xscheme = xs;
xhr = new XMLHttpRequest(opts);
if ('open' in xhr && !opts.forceJSONP) {
return new XHR(opts);
} else {
if (!jsonp) throw new Error('JSONP disabled');
return new JSONP(opts);
}
}
Version data entries
88 entries across 88 versions & 2 rubygems