From 05972970d1f4dcf46fc9f1e770e6138175ca029a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?A=CC=81lvaro=20Velad=20Galva=CC=81n?= <ladvan91@hotmail.com>
Date: Wed, 18 Sep 2024 12:33:45 +0200
Subject: [PATCH] fix(DASH): Fix HTTP redirect during manifest update

---
 lib/dash/dash_parser.js | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/dash/dash_parser.js b/lib/dash/dash_parser.js
index 5b5e5921d1..1ac30b6deb 100644
--- a/lib/dash/dash_parser.js
+++ b/lib/dash/dash_parser.js
@@ -192,6 +192,9 @@ shaka.dash.DashParser = class {
 
     /** @private {function():boolean} */
     this.isPreloadFn_ = () => false;
+
+    /** @private {?Array.<string>} */
+    this.lastCalculatedBaseUris_ = [];
   }
 
   /**
@@ -602,7 +605,6 @@ shaka.dash.DashParser = class {
     }
 
     const uriObjs = TXml.findChildren(mpd, 'BaseURL');
-    let calculatedBaseUris;
     let someLocationValid = false;
     if (this.contentSteeringManager_) {
       for (const uriObj of uriObjs) {
@@ -615,9 +617,10 @@ shaka.dash.DashParser = class {
         }
       }
     }
+    this.lastCalculatedBaseUris_ = null;
     if (!someLocationValid || !this.contentSteeringManager_) {
       const uris = uriObjs.map(TXml.getContents);
-      calculatedBaseUris = shaka.util.ManifestParserUtils.resolveUris(
+      this.lastCalculatedBaseUris_ = shaka.util.ManifestParserUtils.resolveUris(
           manifestBaseUris, uris);
     }
 
@@ -625,8 +628,8 @@ shaka.dash.DashParser = class {
       if (this.contentSteeringManager_ && someLocationValid) {
         return this.contentSteeringManager_.getLocations('BaseURL');
       }
-      if (calculatedBaseUris) {
-        return calculatedBaseUris;
+      if (this.lastCalculatedBaseUris_) {
+        return this.lastCalculatedBaseUris_;
       }
       return [];
     };