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XHRLoader.js
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XHRLoader.js
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/**
* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import FactoryMaker from '../../core/FactoryMaker';
import { modifyRequest } from '../utils/RequestModifier';
/**
* @module XHRLoader
* @ignore
* @description Manages download of resources via HTTP.
* @param {Object} cfg - dependencies from parent
*/
function XHRLoader(cfg) {
cfg = cfg || {};
const requestModifier = cfg.requestModifier;
let instance;
function load(httpRequest) {
if (requestModifier && requestModifier.modifyRequest) {
modifyRequest(httpRequest, requestModifier)
.then(() => request(httpRequest));
}
else {
request(httpRequest);
}
}
function request(httpRequest) {
// Variables will be used in the callback functions
const requestStartTime = new Date();
const request = httpRequest.request;
let xhr = new XMLHttpRequest();
xhr.open(httpRequest.method, httpRequest.url, true);
if (request.responseType) {
xhr.responseType = request.responseType;
}
if (request.range) {
xhr.setRequestHeader('Range', 'bytes=' + request.range);
}
if (!request.requestStartDate) {
request.requestStartDate = requestStartTime;
}
if (requestModifier && requestModifier.modifyRequestHeader) {
xhr = requestModifier.modifyRequestHeader(xhr, {
url: httpRequest.url
});
}
if (httpRequest.headers) {
for (let header in httpRequest.headers) {
let value = httpRequest.headers[header];
if (value) {
xhr.setRequestHeader(header, value);
}
}
}
xhr.withCredentials = httpRequest.withCredentials;
xhr.onload = httpRequest.onload;
xhr.onloadend = httpRequest.onend;
xhr.onerror = httpRequest.onerror;
xhr.onprogress = httpRequest.progress;
xhr.onabort = httpRequest.onabort;
xhr.ontimeout = httpRequest.ontimeout;
xhr.timeout = httpRequest.timeout;
xhr.send();
httpRequest.response = xhr;
}
function abort(request) {
const x = request.response;
x.onloadend = x.onerror = x.onprogress = undefined; //Ignore events from aborted requests.
x.abort();
}
instance = {
load: load,
abort: abort
};
return instance;
}
XHRLoader.__dashjs_factory_name = 'XHRLoader';
const factory = FactoryMaker.getClassFactory(XHRLoader);
export default factory;