From fe373199967cc54b74be463653d33274d1430f09 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Wed, 25 Oct 2023 04:29:37 +0200
Subject: [PATCH] [DOM] Ignore status 206 and vary header checking for opaque
 responses in the Cache API.

---
 dom/cache/TypeUtils.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dom/cache/TypeUtils.cpp b/dom/cache/TypeUtils.cpp
index 1af5ee9458..89fe2a62fb 100644
--- a/dom/cache/TypeUtils.cpp
+++ b/dom/cache/TypeUtils.cpp
@@ -190,7 +190,7 @@ TypeUtils::ToCacheResponseWithoutBody(CacheResponse& aOut,
   aOut.statusText() = aIn.GetUnfilteredStatusText();
   RefPtr<InternalHeaders> headers = aIn.UnfilteredHeaders();
   MOZ_DIAGNOSTIC_ASSERT(headers);
-  if (HasVaryStar(headers)) {
+  if (aIn.Type() != ResponseType::Opaque && HasVaryStar(headers)) {
     aRv.ThrowTypeError<MSG_RESPONSE_HAS_VARY_STAR>();
     return;
   }