Add fragmentRequestTimeout JSDoc and type definition, and default to …

…0 when NaN.

index.d.ts

@@ -145,6 +145,7 @@ declare namespace dashjs {
                 video?: number;
                 audio?: number;
             };
+            fragmentRequestTimeout?: number;
             retryIntervals?: {
                 'MPD'?:                       number;
                 'XLinkExpansion'?:            number;

src/core/Settings.js

@@ -81,6 +81,7 @@ import {HTTPRequest} from '../streaming/vo/metrics/HTTPRequest';
  *          lastBitrateCachingInfo: { enabled: true, ttl: 360000 },
  *          lastMediaSettingsCachingInfo: { enabled: true, ttl: 360000 },
  *          cacheLoadThresholds: { video: 50, audio: 5 },
+ *          fragmentRequestTimeout: 0,
  *          retryIntervals: {
  *              MPD: 500,
  *              XLinkExpansion: 500,
@@ -331,6 +332,7 @@ import {HTTPRequest} from '../streaming/vo/metrics/HTTPRequest';
  * @property {module:Settings~AudioVideoSettings} [cacheLoadThresholds={video: 50, audio: 5}]
  * For a given media type, the threshold which defines if the response to a fragment
  * request is coming from browser cache or not.
+ * @property {module:Settings~RequestTypeSettings} [fragmentRequestTimeout] Time in milliseconds before timing out on loading a media fragment. Fragments that timeout are retried as if they failed.
  * @property {module:Settings~RequestTypeSettings} [retryIntervals] Time in milliseconds of which to reload a failed file load attempt. For low latency mode these values are divided by lowLatencyReductionFactor.
  * @property {module:Settings~RequestTypeSettings} [retryAttempts] Total number of retry attempts that will occur on a file load before it fails. For low latency mode these values are multiplied by lowLatencyMultiplyFactor.
  * @property {module:Settings~AbrSettings} abr Adaptive Bitrate algorithm related settings.

src/streaming/net/URLLoader.js

@@ -61,7 +61,7 @@ function URLLoader(cfg) {
             constants: cfg.constants ? cfg.constants : null,
             dashConstants: cfg.dashConstants ? cfg.dashConstants : null,
             urlUtils: cfg.urlUtils ? cfg.urlUtils : null,
-            requestTimeout: cfg.requestTimeout,
+            requestTimeout: !isNaN(cfg.requestTimeout) ? cfg.requestTimeout : 0,
             errors: cfg.errors
         });