From 2ecc7f4f59f770c4bf76519af272f6ded0b27e9c Mon Sep 17 00:00:00 2001
From: Darren Yu <YDL@YUDONGLING.NET>
Date: Fri, 23 Jan 2026 15:30:35 +0800
Subject: [PATCH] fix(cos): missing response-content-disposition header when
 enable not sign for CDN url (#2546) (#3202)

* fix(cos): missing response-content-disposition header for public-read bucket

* fix(cos): anonymous GET req not support response header
---
 pkg/filemanager/driver/cos/cos.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkg/filemanager/driver/cos/cos.go b/pkg/filemanager/driver/cos/cos.go
index c9ad912d..cde8cbed 100644
--- a/pkg/filemanager/driver/cos/cos.go
+++ b/pkg/filemanager/driver/cos/cos.go
@@ -416,8 +416,10 @@ func (handler Driver) signSourceURL(ctx context.Context, path string, expire *ti
 
 		file.Path = path
 
-		// 非签名URL不支持设置响应header
-		options.ContentDescription = ""
+		// 公有空间不支持设置响应header
+		if !handler.policy.IsPrivate {
+			options.ContentDescription = ""
+		}
 
 		optionQuery, err := query.Values(*options)
 		if err != nil {