From f8c3b5d030a6e8052ea4274dd0892378ccefe804 Mon Sep 17 00:00:00 2001
From: 5aaee9 <7685264+5aaee9@users.noreply.github.com>
Date: Tue, 21 May 2024 22:20:23 +0800
Subject: [PATCH] fix(listener/tproxy): possilly using released buffer in
 tproxy

---
 listener/tproxy/packet.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/listener/tproxy/packet.go b/listener/tproxy/packet.go
index e4852665..a9481c5b 100644
--- a/listener/tproxy/packet.go
+++ b/listener/tproxy/packet.go
@@ -105,11 +105,13 @@ func listenLocalConn(rAddr, lAddr net.Addr, tunnel C.Tunnel) (*net.UDPConn, erro
 			buf := pool.Get(pool.UDPBufferSize)
 			br, err := lc.Read(buf)
 			if err != nil {
-				pool.Put(buf)
 				if errors.Is(err, net.ErrClosed) {
 					log.Debugln("TProxy local conn listener exit.. rAddr=%s lAddr=%s", rAddr.String(), lAddr.String())
+					pool.Put(buf)
 					return
 				}
+
+				log.Debugln("TProxy local conn read err=%v", err)
 			}
 			// since following localPackets are pass through this socket which listen rAddr
 			// I choose current listener as packet's packet conn