From 566e52f1dd38944498f1fc03bc81a1668e169bf7 Mon Sep 17 00:00:00 2001
From: Matthias Seemann <296476+semmel@users.noreply.github.com>
Date: Thu, 3 Aug 2023 21:23:27 +0200
Subject: [PATCH] Tolerate inaccessible localStorage

When reading from localStorage, treat security exceptions like absent values.
This supports running in third-party contexts when cross-origin cookies are blocked by the browser.
---
 .../src/OpenViduInternal/WebRtcStats/WebRtcStats.ts       | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts b/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts
index adc9572a..9f798295 100644
--- a/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts
+++ b/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts
@@ -121,7 +121,13 @@ export class WebRtcStats {
     }
 
     public initWebRtcStats(): void {
-        const webrtcObj = localStorage.getItem(this.STATS_ITEM_NAME);
+        let webrtcObj = null;
+        // When cross-site (aka third-party) cookies are blocked by the browser,
+        // accessing localStorage in a third-party iframe throws a DOMException.
+        try {
+            webrtcObj = localStorage.getItem(this.STATS_ITEM_NAME);
+        }
+        catch(e){}
 
         if (!!webrtcObj) {
             this.webRtcStatsEnabled = true;