From 8343c3597edcbd84d5016049b579394f34a90e1e Mon Sep 17 00:00:00 2001
From: Skyxim <skyxim@noreply.com>
Date: Mon, 6 Jun 2022 21:45:08 +0800
Subject: [PATCH] fix: doq maybe crash when use adapter

---
 dns/doq.go  | 4 ++--
 dns/util.go | 8 ++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/dns/doq.go b/dns/doq.go
index ffcb001c..04d80d13 100644
--- a/dns/doq.go
+++ b/dns/doq.go
@@ -7,13 +7,13 @@ import (
 	"fmt"
 	"github.com/Dreamacro/clash/component/dialer"
 	"github.com/Dreamacro/clash/component/resolver"
+	"github.com/lucas-clemente/quic-go"
 	"net"
 	"strconv"
 	"sync"
 	"time"
 
 	"github.com/Dreamacro/clash/log"
-	"github.com/lucas-clemente/quic-go"
 	D "github.com/miekg/dns"
 )
 
@@ -174,7 +174,7 @@ func (dc *quicClient) openSession() (quic.Connection, error) {
 
 		wrapConn, ok := conn.(*wrapPacketConn)
 		if !ok {
-			return nil, fmt.Errorf("quio create packet failed")
+			return nil, fmt.Errorf("quic create packet failed")
 		}
 
 		udp = wrapConn
diff --git a/dns/util.go b/dns/util.go
index 3c9c07df..4ea511a9 100644
--- a/dns/util.go
+++ b/dns/util.go
@@ -143,6 +143,14 @@ func (wpc *wrapPacketConn) RemoteAddr() net.Addr {
 	return wpc.rAddr
 }
 
+func (wpc *wrapPacketConn) LocalAddr() net.Addr {
+	if wpc.PacketConn.LocalAddr() == nil {
+		return &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+	} else {
+		return wpc.PacketConn.LocalAddr()
+	}
+}
+
 func dialContextExtra(ctx context.Context, adapterName string, network string, dstIP netip.Addr, port string, opts ...dialer.Option) (net.Conn, error) {
 	adapter, ok := tunnel.Proxies()[adapterName]
 	if !ok {