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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 XHRLoader from './XHRLoader.js';
import FetchLoader from './FetchLoader.js';
import {HTTPRequest} from '../vo/metrics/HTTPRequest.js';
import FactoryMaker from '../../core/FactoryMaker.js';
import DashJSError from '../vo/DashJSError.js';
import CmcdModel from '../models/CmcdModel.js';
import CmsdModel from '../models/CmsdModel.js';
import Utils from '../../core/Utils.js';
import Debug from '../../core/Debug.js';
import EventBus from '../../core/EventBus.js';
import Events from '../../core/events/Events.js';
import Settings from '../../core/Settings.js';
import Constants from '../constants/Constants.js';
import CustomParametersModel from '../models/CustomParametersModel.js';
import CommonAccessTokenController from '../controllers/CommonAccessTokenController.js';
import ClientDataReportingController from '../controllers/ClientDataReportingController.js';
import ExtUrlQueryInfoController from '../controllers/ExtUrlQueryInfoController.js';
import CommonMediaRequest from '../vo/CommonMediaRequest.js';
import CommonMediaResponse from '../vo/CommonMediaResponse.js';
/**
* @module HTTPLoader
* @ignore
* @description Manages download of resources via HTTP.
* @param {Object} cfg - dependencies from parent
*/
function HTTPLoader(cfg) {
cfg = cfg || {};
const context = this.context;
const errHandler = cfg.errHandler;
const dashMetrics = cfg.dashMetrics;
const mediaPlayerModel = cfg.mediaPlayerModel;
const boxParser = cfg.boxParser;
const errors = cfg.errors;
const requestTimeout = cfg.requestTimeout || 0;
const eventBus = EventBus(context).getInstance();
const settings = Settings(context).getInstance();
let instance,
httpRequests,
delayedRequests,
retryRequests,
downloadErrorToRequestTypeMap,
cmcdModel,
cmsdModel,
xhrLoader,
fetchLoader,
customParametersModel,
commonAccessTokenController,
clientDataReportingController,
extUrlQueryInfoController,
logger;
function setup() {
logger = Debug(context).getInstance().getLogger(instance);
httpRequests = [];
delayedRequests = [];
retryRequests = [];
cmcdModel = CmcdModel(context).getInstance();
clientDataReportingController = ClientDataReportingController(context).getInstance();
cmsdModel = CmsdModel(context).getInstance();
customParametersModel = CustomParametersModel(context).getInstance();
commonAccessTokenController = CommonAccessTokenController(context).getInstance();
extUrlQueryInfoController = ExtUrlQueryInfoController(context).getInstance();
downloadErrorToRequestTypeMap = {
[HTTPRequest.MPD_TYPE]: errors.DOWNLOAD_ERROR_ID_MANIFEST_CODE,
[HTTPRequest.XLINK_EXPANSION_TYPE]: errors.DOWNLOAD_ERROR_ID_XLINK_CODE,
[HTTPRequest.INIT_SEGMENT_TYPE]: errors.DOWNLOAD_ERROR_ID_INITIALIZATION_CODE,
[HTTPRequest.MEDIA_SEGMENT_TYPE]: errors.DOWNLOAD_ERROR_ID_CONTENT_CODE,
[HTTPRequest.INDEX_SEGMENT_TYPE]: errors.DOWNLOAD_ERROR_ID_CONTENT_CODE,
[HTTPRequest.BITSTREAM_SWITCHING_SEGMENT_TYPE]: errors.DOWNLOAD_ERROR_ID_CONTENT_CODE,
[HTTPRequest.OTHER_TYPE]: errors.DOWNLOAD_ERROR_ID_CONTENT_CODE
};
}
function setConfig(config) {
if (!config) {
return;
}
if (config.commonAccessTokenController) {
commonAccessTokenController = config.commonAccessTokenController
}
if (config.extUrlQueryInfoController) {
extUrlQueryInfoController = config.extUrlQueryInfoController;
}
}
/**
* Initiates a download of the resource described by config.request.
* @param {Object} config - contains request (FragmentRequest or derived type), and callbacks
* @memberof module:HTTPLoader
* @instance
*/
function load(config) {
if (config.request) {
const retryAttempts = mediaPlayerModel.getRetryAttemptsForType(config.request.type);
return _internalLoad(config, retryAttempts);
} else {
if (config.error) {
config.error(config.request, 'error');
}
return Promise.resolve();
}
}
/**
* Initiates or re-initiates a download of the resource
* @param {object} config
* @param {number} remainingAttempts
* @private
*/
function _internalLoad(config, remainingAttempts) {
/**
* Fired when a request has completed, whether successfully (after load) or unsuccessfully (after abort, timeout or error).
*/
const _onloadend = function () {
_onRequestEnd();
};
/**
* Fired when a request has started to load data.
* @param event
*/
const _onprogress = function (event) {
const currentTime = new Date();
// If we did not transfer all data yet and this is the first time we are getting a progress event we use this time as firstByteDate.
if (firstProgress) {
firstProgress = false;
// event.loaded: the amount of data currently transferred
// event.total: the total amount of data to be transferred.
// If lengthComputable is false within the XMLHttpRequestProgressEvent, that means the server never sent a Content-Length header in the response.
if (!event.lengthComputable ||
(event.lengthComputable && event.total !== event.loaded)) {
requestObject.firstByteDate = currentTime;
commonMediaResponse.resourceTiming.responseStart = currentTime.getTime();
}
}
// lengthComputable indicating if the resource concerned by the ProgressEvent has a length that can be calculated. If not, the ProgressEvent.total property has no significant value.
if (event.lengthComputable) {
requestObject.bytesLoaded = commonMediaResponse.length = event.loaded;
requestObject.bytesTotal = commonMediaResponse.resourceTiming.encodedBodySize = event.total;
commonMediaResponse.length = event.total;
commonMediaResponse.resourceTiming.encodedBodySize = event.loaded;
}
if (!event.noTrace) {
traces.push({
s: lastTraceTime,
d: event.time ? event.time : currentTime.getTime() - lastTraceTime.getTime(),
b: [event.loaded ? event.loaded - lastTraceReceivedCount : 0], // event.loaded: When downloading a resource using HTTP, this value is specified in bytes (not bits), and only represents the part of the content itself, not headers and other overhead
t: event.throughput
});
requestObject.traces = traces;
lastTraceTime = currentTime;
lastTraceReceivedCount = event.loaded;
}
Iif (progressTimeout) {
clearTimeout(progressTimeout);
progressTimeout = null;
}
Iif (settings.get().streaming.fragmentRequestProgressTimeout > 0) {
progressTimeout = setTimeout(function () {
// No more progress => abort request and treat as an error
logger.warn('Abort request ' + commonMediaRequest.url + ' due to progress timeout');
loader.abort(commonMediaRequest);
_onloadend();
}, settings.get().streaming.fragmentRequestProgressTimeout);
}
Iif (config.progress && event) {
config.progress(event);
}
};
/**
* Fired when a request has been aborted, for example because the program called XMLHttpRequest.abort().
*/
const _onabort = function () {
_onRequestEnd(true)
};
/**
* Fired when progress is terminated due to preset time expiring.
* @param event
*/
const _ontimeout = function (event) {
let timeoutMessage;
// We know how much we already downloaded by looking at the timeout event
if (event.lengthComputable) {
let percentageComplete = (event.loaded / event.total) * 100;
timeoutMessage = 'Request timeout: loaded: ' + event.loaded + ', out of: ' + event.total + ' : ' + percentageComplete.toFixed(3) + '% Completed';
} else {
timeoutMessage = 'Request timeout: non-computable download size';
}
logger.warn(timeoutMessage);
};
const _onRequestEnd = function (aborted = false) {
// Remove the request from our list of requests
if (httpRequests.indexOf(commonMediaRequest) !== -1) {
httpRequests.splice(httpRequests.indexOf(commonMediaRequest), 1);
}
Iif (progressTimeout) {
clearTimeout(progressTimeout);
progressTimeout = null;
}
commonAccessTokenController.processResponseHeaders(commonMediaResponse);
_updateRequestTimingInfo();
_updateResourceTimingInfo();
_applyResponseInterceptors(commonMediaResponse).then((_httpResponse) => {
commonMediaResponse = _httpResponse;
_addHttpRequestMetric(commonMediaRequest, commonMediaResponse, traces);
// Ignore aborted requests
Iif (aborted) {
if (config.abort) {
config.abort(requestObject);
}
return;
}
Iif (requestObject.type === HTTPRequest.MPD_TYPE) {
dashMetrics.addManifestUpdate(requestObject);
eventBus.trigger(Events.MANIFEST_LOADING_FINISHED, { requestObject });
}
if (commonMediaResponse.status >= 200 && commonMediaResponse.status <= 299 && commonMediaResponse.data) {
if (config.success) {
config.success(commonMediaResponse.data, commonMediaResponse.statusText, commonMediaResponse.url);
}
Iif (config.complete) {
config.complete(requestObject, commonMediaResponse.statusText);
}
} else {
// If we get a 404 to a media segment we should check the client clock again and perform a UTC sync in the background.
try {
if (commonMediaResponse.status === 404 && settings.get().streaming.utcSynchronization.enableBackgroundSyncAfterSegmentDownloadError && requestObject.type === HTTPRequest.MEDIA_SEGMENT_TYPE) {
// Only trigger a sync if the loading failed for the first time
const initialNumberOfAttempts = mediaPlayerModel.getRetryAttemptsForType(HTTPRequest.MEDIA_SEGMENT_TYPE);
if (initialNumberOfAttempts === remainingAttempts) {
eventBus.trigger(Events.ATTEMPT_BACKGROUND_SYNC);
}
}
} catch (e) {
}
_retriggerRequest();
}
});
};
const _updateRequestTimingInfo = function () {
requestObject.startDate = requestStartTime;
requestObject.endDate = new Date();
requestObject.firstByteDate = requestObject.firstByteDate || requestStartTime;
}
const _updateResourceTimingInfo = function () {
commonMediaResponse.resourceTiming.responseEnd = Date.now();
// If enabled the ResourceTimingApi we add the corresponding information to the request object.
// These values are more accurate and can be used by the ThroughputController later
_addResourceTimingValues(commonMediaRequest, commonMediaResponse);
}
const _loadRequest = function (loader, httpRequest, httpResponse) {
return new Promise((resolve) => {
_applyRequestInterceptors(httpRequest).then((_httpRequest) => {
httpRequest = _httpRequest;
httpRequest.customData.onloadend = _onloadend;
httpRequest.customData.onprogress = _onprogress;
httpRequest.customData.onabort = _onabort;
httpRequest.customData.ontimeout = _ontimeout;
httpResponse.resourceTiming.startTime = Date.now();
loader.load(httpRequest, httpResponse);
resolve();
});
});
}
/**
* Retriggers the request in case we did not exceed the number of retry attempts
* @private
*/
const _retriggerRequest = function () {
if (remainingAttempts > 0) {
remainingAttempts--;
if (config && config.request) {
config.request.retryAttempts += 1;
}
let retryRequest = { config: config };
retryRequests.push(retryRequest);
retryRequest.timeout = setTimeout(function () {
Iif (retryRequests.indexOf(retryRequest) === -1) {
return;
} else {
retryRequests.splice(retryRequests.indexOf(retryRequest), 1);
}
_internalLoad(config, remainingAttempts);
}, mediaPlayerModel.getRetryIntervalsForType(requestObject.type));
} else {
Iif (requestObject.type === HTTPRequest.MSS_FRAGMENT_INFO_SEGMENT_TYPE) {
return;
}
errHandler.error(new DashJSError(downloadErrorToRequestTypeMap[requestObject.type], requestObject.url + ' is not available', {
request: requestObject,
response: commonMediaResponse
}));
if (config.error) {
config.error(requestObject, 'error', commonMediaResponse.statusText, commonMediaResponse);
}
if (config.complete) {
config.complete(requestObject, commonMediaResponse.statusText);
}
}
}
// Main code after inline functions
const requestObject = config.request;
const traces = [];
let firstProgress, requestStartTime, lastTraceTime, lastTraceReceivedCount, progressTimeout;
let commonMediaRequest;
let commonMediaResponse;
requestObject.bytesLoaded = NaN;
requestObject.bytesTotal = NaN;
requestObject.firstByteDate = null;
requestObject.traces = [];
firstProgress = true;
requestStartTime = new Date();
lastTraceTime = requestStartTime;
lastTraceReceivedCount = 0;
progressTimeout = null;
if (!dashMetrics || !errHandler) {
throw new Error('config object is not correct or missing');
}
const loaderInformation = _getLoader(requestObject);
const loader = loaderInformation.loader;
requestObject.fileLoaderType = loaderInformation.fileLoaderType;
requestObject.headers = {};
_updateRequestUrlAndHeaders(requestObject);
if (requestObject.range) {
requestObject.headers['Range'] = 'bytes=' + requestObject.range;
}
const withCredentials = customParametersModel.getXHRWithCredentialsForType(requestObject.type);
commonMediaRequest = new CommonMediaRequest({
url: requestObject.url,
method: HTTPRequest.GET,
responseType: requestObject.responseType,
headers: requestObject.headers,
credentials: withCredentials ? 'include' : 'omit',
timeout: requestTimeout,
cmcd: cmcdModel.getCmcdData(requestObject),
customData: { request: requestObject }
});
commonMediaResponse = new CommonMediaResponse({
request: commonMediaRequest,
resourceTiming: {
startTime: Date.now(),
encodedBodySize: 0
},
status: 0
});
// Adds the ability to delay single fragment loading time to control buffer.
let now = new Date().getTime();
if (isNaN(requestObject.delayLoadingTime) || now >= requestObject.delayLoadingTime) {
// no delay - just send
httpRequests.push(commonMediaRequest);
return _loadRequest(loader, commonMediaRequest, commonMediaResponse);
} else E{
// delay
let delayedRequest = {
httpRequest: commonMediaRequest,
httpResponse: commonMediaResponse
};
delayedRequests.push(delayedRequest);
delayedRequest.delayTimeout = setTimeout(function () {
if (delayedRequests.indexOf(delayedRequest) === -1) {
return;
} else {
delayedRequests.splice(delayedRequests.indexOf(delayedRequest), 1);
}
try {
requestStartTime = new Date();
lastTraceTime = requestStartTime;
httpRequests.push(delayedRequest.httpRequest);
_loadRequest(loader, delayedRequest.httpRequest, delayedRequest.httpResponse);
} catch (e) {
delayedRequest.httpRequest.onloadend();
}
}, (requestObject.delayLoadingTime - now));
return Promise.resolve();
}
}
function _applyRequestInterceptors(httpRequest) {
const interceptors = customParametersModel.getRequestInterceptors();
Iif (!interceptors) {
return Promise.resolve(httpRequest);
}
return interceptors.reduce((prev, next) => {
return prev.then((request) => {
return next(request);
});
}, Promise.resolve(httpRequest));
}
function _applyResponseInterceptors(response) {
const interceptors = customParametersModel.getResponseInterceptors();
Iif (!interceptors) {
return Promise.resolve(response);
}
return interceptors.reduce((prev, next) => {
return prev.then(resp => {
return next(resp);
});
}, Promise.resolve(response));
}
function _addHttpRequestMetric(httpRequest, httpResponse, traces) {
const requestObject = httpRequest.customData.request;
const cmsd = settings.get().streaming.cmsd && settings.get().streaming.cmsd.enabled ? cmsdModel.parseResponseHeaders(httpResponse.headers, requestObject.mediaType) : null;
dashMetrics.addHttpRequest(requestObject, httpResponse.url, httpResponse.status, httpResponse.headers, traces, cmsd);
}
/**
* Adds the values from the Resource Timing API, see https://developer.mozilla.org/en-US/docs/Web/API/Resource_Timing_API/Using_the_Resource_Timing_API
* @param requestObject
* @private
*/
function _addResourceTimingValues(httpRequest, httpResponse) {
Iif (!settings.get().streaming.abr.throughput.useResourceTimingApi) {
return;
}
// Check performance support. We do not support range requests, needs to figure out how to find the right resource here.
Iif (typeof performance === 'undefined' || httpRequest.range) {
return;
}
// Get a list of "resource" performance entries
const resources = performance.getEntriesByType?.('resource');
Iif (resources === undefined || resources.length <= 0) {
return;
}
// Find the right resource
let i = 0;
let resource = null;
while (i < resources.length) {
Iif (resources[i].name === httpRequest.url) {
resource = resources[i];
break;
}
i += 1;
}
// Check if PerformanceResourceTiming values are usable
// Note: to allow seeing cross-origin timing information, the Timing-Allow-Origin HTTP response header needs to be set
// See https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming#cross-origin_timing_information
if (!_areResourceTimingValuesUsable(resource)) {
return;
}
httpRequest.customData.request.resourceTimingValues = resource;
// Update CommonMediaResponse Resource Timing info
httpResponse.resourceTiming.startTime = resource.startTime;
httpResponse.resourceTiming.encodedBodySize = resource.encodedBodySize;
httpResponse.resourceTiming.responseStart = resource.startTime;
httpResponse.resourceTiming.responseEnd = resource.responseEnd;
httpResponse.resourceTiming.duration = resource.duration;
}
/**
* Checks if we got usable ResourceTimingAPI values
* @param httpRequest
* @returns {boolean}
* @private
*/
function _areResourceTimingValuesUsable(resource) {
return resource &&
!isNaN(resource.responseStart) && resource.responseStart > 0 &&
!isNaN(resource.responseEnd) && resource.responseEnd > 0 &&
!isNaN(resource.transferSize) && resource.transferSize > 0
}
/**
* Returns either the FetchLoader or the XHRLoader depending on the request type and playback mode.
* @param {object} request
* @return {*}
* @private
*/
function _getLoader(request) {
let loader;
let fileLoaderType;
Iif (!request.isPartialSegmentRequest && request.hasOwnProperty('availabilityTimeComplete') && request.availabilityTimeComplete === false && window.fetch && request.responseType === 'arraybuffer' && request.type === HTTPRequest.MEDIA_SEGMENT_TYPE) {
if (!fetchLoader) {
fetchLoader = FetchLoader(context).create();
fetchLoader.setConfig({
dashMetrics,
boxParser
});
}
loader = fetchLoader;
fileLoaderType = Constants.FILE_LOADER_TYPES.FETCH;
} else {
if (!xhrLoader) {
xhrLoader = XHRLoader(context).create();
}
loader = xhrLoader;
fileLoaderType = Constants.FILE_LOADER_TYPES.XHR;
}
return { loader, fileLoaderType };
}
/**
* Updates the request url and headers according to CMCD and content steering (pathway cloning)
* @param request
* @private
*/
function _updateRequestUrlAndHeaders(request) {
_updateRequestUrlAndHeadersWithCmcd(request);
if (request.retryAttempts === 0) {
_addExtUrlQueryParameters(request);
}
_addPathwayCloningParameters(request);
_addCommonAccessToken(request);
}
function _addExtUrlQueryParameters(request) {
// Add ExtUrlQueryInfo parameters
let finalQueryString = extUrlQueryInfoController.getFinalQueryString(request);
Iif (finalQueryString) {
request.url = Utils.addAdditionalQueryParameterToUrl(request.url, finalQueryString);
}
}
function _addPathwayCloningParameters(request) {
// Add queryParams that came from pathway cloning
Iif (request.queryParams) {
const queryParams = Object.keys(request.queryParams).map((key) => {
return {
key,
value: request.queryParams[key]
}
})
request.url = Utils.addAdditionalQueryParameterToUrl(request.url, queryParams);
}
}
function _addCommonAccessToken(request) {
const commonAccessToken = commonAccessTokenController.getCommonAccessTokenForUrl(request.url)
Iif (commonAccessToken) {
request.headers[Constants.COMMON_ACCESS_TOKEN_HEADER] = commonAccessToken
}
}
/**
* Updates the request url and headers with CMCD data
* @param request
* @private
*/
function _updateRequestUrlAndHeadersWithCmcd(request) {
const currentServiceLocation = request?.serviceLocation;
const currentAdaptationSetId = request?.mediaInfo?.id?.toString();
const isIncludedFilters = clientDataReportingController.isServiceLocationIncluded(request.type, currentServiceLocation) &&
clientDataReportingController.isAdaptationsIncluded(currentAdaptationSetId);
Iif (isIncludedFilters && cmcdModel.isCmcdEnabled()) {
const cmcdParameters = cmcdModel.getCmcdParametersFromManifest();
const cmcdMode = cmcdParameters.mode ? cmcdParameters.mode : settings.get().streaming.cmcd.mode;
if (cmcdMode === Constants.CMCD_MODE_QUERY) {
request.url = Utils.removeQueryParameterFromUrl(request.url, Constants.CMCD_QUERY_KEY);
const additionalQueryParameter = _getAdditionalQueryParameter(request);
request.url = Utils.addAdditionalQueryParameterToUrl(request.url, additionalQueryParameter);
} else if (cmcdMode === Constants.CMCD_MODE_HEADER) {
request.headers = Object.assign(request.headers, cmcdModel.getHeaderParameters(request));
}
}
}
/**
* Generates the additional query parameters to be appended to the request url
* @param {object} request
* @return {array}
* @private
*/
function _getAdditionalQueryParameter(request) {
try {
const additionalQueryParameter = [];
const cmcdQueryParameter = cmcdModel.getQueryParameter(request);
if (cmcdQueryParameter) {
additionalQueryParameter.push(cmcdQueryParameter);
}
return additionalQueryParameter;
} catch (e) {
return [];
}
}
/**
* Aborts any inflight downloads
* @memberof module:HTTPLoader
* @instance
*/
function abort() {
retryRequests.forEach(t => {
clearTimeout(t.timeout);
// abort request in order to trigger LOADING_ABANDONED event
if (t.config.request && t.config.abort) {
t.config.abort(t.config.request);
}
});
retryRequests = [];
delayedRequests.forEach(x => clearTimeout(x.delayTimeout));
delayedRequests = [];
httpRequests.forEach(req => {
const reqData = req.customData
if (!reqData) {
return
}
// MSS patch: ignore FragmentInfo requests
if (reqData.request && reqData.request.type === HTTPRequest.MSS_FRAGMENT_INFO_SEGMENT_TYPE) {
return;
}
// abort will trigger onloadend which we don't want
// when deliberately aborting inflight requests -
// set them to undefined so they are not called
reqData.onloadend = reqData.onprogress = undefined;
if (reqData.abort) {
reqData.abort();
}
});
httpRequests = [];
}
function resetInitialSettings() {
if (xhrLoader) {
xhrLoader.resetInitialSettings();
}
}
function reset() {
httpRequests = [];
delayedRequests = [];
retryRequests = [];
if (xhrLoader) {
xhrLoader.reset();
}
if (fetchLoader) {
fetchLoader.reset();
}
xhrLoader = null;
fetchLoader = null;
}
instance = {
abort,
load,
reset,
resetInitialSettings,
setConfig,
};
setup();
return instance;
}
HTTPLoader.__dashjs_factory_name = 'HTTPLoader';
const factory = FactoryMaker.getClassFactory(HTTPLoader);
export default factory;
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