From 1d9fa029c2478df7f7dcce3cabdd953dc4a0568e Mon Sep 17 00:00:00 2001
From: tobyxdd <tobyxdd@gmail.com>
Date: Tue, 14 Feb 2023 21:30:45 -0800
Subject: [PATCH] fix: set serverAddrs to nil when closing an
 ObfsUDPHopClientPacketConn to prevent memory leaks

---
 core/pktconns/udp/hop.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/pktconns/udp/hop.go b/core/pktconns/udp/hop.go
index 4458131..a893514 100644
--- a/core/pktconns/udp/hop.go
+++ b/core/pktconns/udp/hop.go
@@ -204,6 +204,9 @@ func (c *ObfsUDPHopClientPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
 func (c *ObfsUDPHopClientPacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
 	c.connMutex.RLock()
 	defer c.connMutex.RUnlock()
+	if c.closed {
+		return 0, net.ErrClosed
+	}
 	/*
 		// Check if the address is the server address
 		if addr.String() != c.serverAddr.String() {
@@ -229,6 +232,7 @@ func (c *ObfsUDPHopClientPacketConn) Close() error {
 	err := c.currentConn.Close()
 	close(c.closeChan)
 	c.closed = true
+	c.serverAddrs = nil // For GC
 	return err
 }