From 8ab36d684275335eb3779f7044b61d6d406b654a Mon Sep 17 00:00:00 2001
From: ChanHyeongLee <cksgud410@gmail.com>
Date: Fri, 4 Apr 2025 21:52:35 +0900
Subject: [PATCH] replace unmodifiableList to copyOf

Signed-off-by: ChanHyeongLee <cksgud410@gmail.com>
---
 .../java/org/springframework/http/ReadOnlyHttpHeaders.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/spring-web/src/main/java/org/springframework/http/ReadOnlyHttpHeaders.java b/spring-web/src/main/java/org/springframework/http/ReadOnlyHttpHeaders.java
index 8ec4278c569f..80815b7f7bc1 100644
--- a/spring-web/src/main/java/org/springframework/http/ReadOnlyHttpHeaders.java
+++ b/spring-web/src/main/java/org/springframework/http/ReadOnlyHttpHeaders.java
@@ -86,7 +86,7 @@ public void clearContentHeaders() {
 	@Override
 	public @Nullable List<String> get(String headerName) {
 		List<String> values = this.headers.get(headerName);
-		return (values != null ? Collections.unmodifiableList(values) : null);
+		return (values != null ? List.copyOf(values) : null);
 	}
 
 	@Override
@@ -179,7 +179,7 @@ public Set<Entry<String, List<String>>> headerSet() {
 
 	@Override
 	public void forEach(BiConsumer<? super String, ? super List<String>> action) {
-		this.headers.forEach((k, vs) -> action.accept(k, Collections.unmodifiableList(vs)));
+		this.headers.forEach((k, vs) -> action.accept(k, List.copyOf(vs)));
 	}
 
 }