7f468d2064
- flatten auth config to an Authorization header when the Host is created - remove individual Authorization handling from connectors - removed incomplete support for per-request auth - use per-request headers to provide your own Authorization header per request
88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
/**
|
|
* Generic Transport for the browser, using the XmlHttpRequest object
|
|
*
|
|
* @class connections.Xhr
|
|
*/
|
|
module.exports = XhrConnector;
|
|
|
|
/* jshint browser:true */
|
|
|
|
var _ = require('../utils');
|
|
var ConnectionAbstract = require('../connection');
|
|
var ConnectionFault = require('../errors').ConnectionFault;
|
|
var asyncDefault = !(navigator && /PhantomJS/i.test(navigator.userAgent));
|
|
|
|
function XhrConnector(host, config) {
|
|
ConnectionAbstract.call(this, host, config);
|
|
}
|
|
_.inherits(XhrConnector, ConnectionAbstract);
|
|
|
|
/**
|
|
* Simply returns an XHR object cross browser
|
|
* @type {Function}
|
|
*/
|
|
var getXhr = _.noop;
|
|
|
|
if (typeof XMLHttpRequest !== 'undefined') {
|
|
// rewrite the getXhr method to always return the native implementation
|
|
getXhr = function () {
|
|
return new XMLHttpRequest();
|
|
};
|
|
} else {
|
|
// find the first MS implementation available
|
|
getXhr = _(['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'])
|
|
.map(function (appName) {
|
|
/* jshint unused: false */
|
|
try {
|
|
var test = new window.ActiveXObject(appName);
|
|
return function () {
|
|
return new window.ActiveXObject(appName);
|
|
};
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
})
|
|
.compact()
|
|
.first();
|
|
}
|
|
|
|
if (!getXhr) {
|
|
throw new Error('getXhr(): XMLHttpRequest not available');
|
|
}
|
|
|
|
XhrConnector.prototype.request = function (params, cb) {
|
|
var xhr = getXhr();
|
|
var timeoutId;
|
|
var host = this.host;
|
|
var log = this.log;
|
|
|
|
var url = host.makeUrl(params);
|
|
var headers = host.getHeaders(params.headers);
|
|
var async = params.async === false ? false : asyncDefault;
|
|
|
|
xhr.open(params.method || 'GET', url, async);
|
|
|
|
if (headers) {
|
|
for (var key in headers) {
|
|
if (headers[key] !== void 0) {
|
|
xhr.setRequestHeader(key, headers[key]);
|
|
}
|
|
}
|
|
}
|
|
|
|
xhr.onreadystatechange = function () {
|
|
if (xhr.readyState === 4) {
|
|
clearTimeout(timeoutId);
|
|
log.trace(params.method, url, params.body, xhr.responseText, xhr.status);
|
|
var err = xhr.status ? void 0 : new ConnectionFault(xhr.statusText || 'Request failed to complete.');
|
|
cb(err, xhr.responseText, xhr.status);
|
|
}
|
|
};
|
|
|
|
xhr.send(params.body || void 0);
|
|
|
|
return function () {
|
|
xhr.abort();
|
|
};
|
|
};
|