From ad07d279144426afc93b8ceb8bbcced0f2b5c63d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9C=9C=E5=86=B7=E9=95=BF=E6=B2=B3?=
 <weicheng0309@sina.com>
Date: Mon, 11 May 2026 20:23:39 +0800
Subject: [PATCH] fix: reset UDP read deadline on write activity to prevent
 idle timeout

---
 pkg/proto/udp/udp.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkg/proto/udp/udp.go b/pkg/proto/udp/udp.go
index 21c41680..70b51900 100644
--- a/pkg/proto/udp/udp.go
+++ b/pkg/proto/udp/udp.go
@@ -140,6 +140,8 @@ func Forwarder(dstAddr *net.UDPAddr, readCh <-chan *msg.UDPPacket, sendCh chan<-
 			_, err = udpConn.Write(buf)
 			if err != nil {
 				udpConn.Close()
+			} else {
+				_ = udpConn.SetReadDeadline(time.Now().Add(30 * time.Second))
 			}
 
 			if !ok {