From ef3d7e4dd7db83d75d263fda37011e439fda7f9a Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Tue, 27 May 2025 15:04:01 +0800
Subject: [PATCH] chore: remove unneeded dns resolve when proxydialer dial udp

---
 component/proxydialer/proxydialer.go | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/component/proxydialer/proxydialer.go b/component/proxydialer/proxydialer.go
index e1a3cda0..e3ea300a 100644
--- a/component/proxydialer/proxydialer.go
+++ b/component/proxydialer/proxydialer.go
@@ -2,7 +2,6 @@ package proxydialer
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"net"
 	"net/netip"
@@ -10,7 +9,6 @@ import (
 
 	N "github.com/metacubex/mihomo/common/net"
 	"github.com/metacubex/mihomo/component/dialer"
-	"github.com/metacubex/mihomo/component/resolver"
 	C "github.com/metacubex/mihomo/constant"
 	"github.com/metacubex/mihomo/tunnel"
 	"github.com/metacubex/mihomo/tunnel/statistic"
@@ -40,17 +38,16 @@ func (p proxyDialer) DialContext(ctx context.Context, network, address string) (
 		return nil, err
 	}
 	if strings.Contains(network, "udp") { // using in wireguard outbound
-		if !currentMeta.Resolved() {
-			ip, err := resolver.ResolveIP(ctx, currentMeta.Host)
-			if err != nil {
-				return nil, errors.New("can't resolve ip")
-			}
-			currentMeta.DstIP = ip
-		}
 		pc, err := p.listenPacket(ctx, currentMeta)
 		if err != nil {
 			return nil, err
 		}
+		if !currentMeta.Resolved() { // should not happen, maybe by a wrongly implemented proxy, but we can handle this (:
+			err = pc.ResolveUDP(ctx, currentMeta)
+			if err != nil {
+				return nil, err
+			}
+		}
 		return N.NewBindPacketConn(pc, currentMeta.UDPAddr()), nil
 	}
 	var conn C.Conn