From 96a6962b3f7207402ff390055ba48cee8db76eb3 Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Sat, 11 Apr 2026 01:21:15 +0800
Subject: [PATCH] fix: quic underlay packetConn maybe not closed in masque

---
 adapter/outbound/masque.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/adapter/outbound/masque.go b/adapter/outbound/masque.go
index 5f6d8b56..065d21b0 100644
--- a/adapter/outbound/masque.go
+++ b/adapter/outbound/masque.go
@@ -268,9 +268,12 @@ func (w *Masque) run(ctx context.Context) error {
 			return err
 		}
 
-		var quicConn *quic.Conn
-		quicConn, err = quic.Dial(ctx, pc, udpAddr, w.tlsConfig, w.quicConfig)
+		transport := quic.Transport{Conn: pc}
+		transport.SetCreatedConn(true) // auto close conn
+		transport.SetSingleUse(true)   // auto close transport
+		quicConn, err := transport.Dial(ctx, udpAddr, w.tlsConfig, w.quicConfig)
 		if err != nil {
+			_ = pc.Close()
 			return err
 		}