From 25f64738e4ec2ad78e05be3a7959788c81fcb65c Mon Sep 17 00:00:00 2001
From: Nebulosa <85841412+nebulosa2007@users.noreply.github.com>
Date: Sun, 8 Feb 2026 01:01:05 +0300
Subject: [PATCH] refactor: set header only if it not empty (#3763)

---
 sub/subController.go | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/sub/subController.go b/sub/subController.go
index 53b5580b..ffd657a1 100644
--- a/sub/subController.go
+++ b/sub/subController.go
@@ -182,10 +182,24 @@ func (a *SUBController) ApplyCommonHeaders(
 ) {
 	c.Writer.Header().Set("Subscription-Userinfo", header)
 	c.Writer.Header().Set("Profile-Update-Interval", updateInterval)
-	c.Writer.Header().Set("Profile-Title", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileTitle)))
-	c.Writer.Header().Set("Support-Url", profileSupportUrl)
-	c.Writer.Header().Set("Profile-Web-Page-Url", profileUrl)
-	c.Writer.Header().Set("Announce", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileAnnounce)))
+
+	//Basics
+	if profileTitle != "" {
+		c.Writer.Header().Set("Profile-Title", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileTitle)))
+	}
+	if profileSupportUrl != "" {
+		c.Writer.Header().Set("Support-Url", profileSupportUrl)
+	}
+	if profileUrl != "" {
+		c.Writer.Header().Set("Profile-Web-Page-Url", profileUrl)
+	}
+	if profileAnnounce != "" {
+		c.Writer.Header().Set("Announce", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileAnnounce)))
+	}
+
+	//Advanced (Happ)
 	c.Writer.Header().Set("Routing-Enable", strconv.FormatBool(profileEnableRouting))
-	c.Writer.Header().Set("Routing", profileRoutingRules)
+	if profileRoutingRules != "" {
+		c.Writer.Header().Set("Routing", profileRoutingRules)
+	}
 }