From bca0b86549125bc84395188a5d6c5925d75cd415 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Sat, 10 Feb 2024 23:46:52 +0800
Subject: [PATCH] Copy DNS message struct instead of deep copy

---
 outbound/dns.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/outbound/dns.go b/outbound/dns.go
index 0f003377..df32a019 100644
--- a/outbound/dns.go
+++ b/outbound/dns.go
@@ -270,7 +270,8 @@ func truncateDNSMessage(response *mDNS.Msg, maxLen int) *mDNS.Msg {
 	if responseLen <= maxLen {
 		return response
 	}
-	response = response.Copy()
+	newResponse := *response
+	response = &newResponse
 	for len(response.Answer) > 0 && responseLen > maxLen {
 		response.Answer = response.Answer[:len(response.Answer)-1]
 		response.Truncated = true