From 52e952b76eb49647074d9523d41b74543f051b00 Mon Sep 17 00:00:00 2001
From: "metre.ye" <metre.ye@dbappsecurity.com.cn>
Date: Tue, 9 Jul 2024 12:04:25 +0800
Subject: [PATCH] fix: udp dial support ip4p

---
 adapter/outbound/util.go   | 5 +++++
 component/dialer/dialer.go | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/adapter/outbound/util.go b/adapter/outbound/util.go
index 2c85c7c8..c2891021 100644
--- a/adapter/outbound/util.go
+++ b/adapter/outbound/util.go
@@ -11,6 +11,7 @@ import (
 	"strconv"
 	"sync"
 
+	"github.com/metacubex/mihomo/component/dialer"
 	"github.com/metacubex/mihomo/component/resolver"
 	C "github.com/metacubex/mihomo/constant"
 	"github.com/metacubex/mihomo/transport/socks5"
@@ -108,6 +109,10 @@ func resolveUDPAddrWithPrefer(ctx context.Context, network, address string, pref
 		}
 	}
 
+	if ip.Is6() && dialer.IP4PEnable {
+		ip, port = dialer.LookupIP4P(ip, port)
+	}
+
 	if !ip.IsValid() && fallback.IsValid() {
 		ip = fallback
 	}
diff --git a/component/dialer/dialer.go b/component/dialer/dialer.go
index 54a1aa6a..68ff346c 100644
--- a/component/dialer/dialer.go
+++ b/component/dialer/dialer.go
@@ -408,3 +408,7 @@ func lookupIP4P(addr netip.Addr, port string) (netip.Addr, string) {
 	}
 	return addr, port
 }
+
+func LookupIP4P(addr netip.Addr, port string) (netip.Addr, string) {
+	return lookupIP4P(addr, port)
+}