From 9df42d7b983b826f087e8612f5b8e10dbf9342d0 Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Sun, 11 Dec 2022 09:25:46 +0800
Subject: [PATCH] fix: issue #292

---
 adapter/outbound/hysteria.go | 29 ++++++++++++++++++++++-------
 adapter/outbound/tuic.go     |  9 +++++++--
 2 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/adapter/outbound/hysteria.go b/adapter/outbound/hysteria.go
index 56462399..c38946c8 100644
--- a/adapter/outbound/hysteria.go
+++ b/adapter/outbound/hysteria.go
@@ -9,6 +9,7 @@ import (
 	"encoding/pem"
 	"fmt"
 	"net"
+	"net/netip"
 	"os"
 	"regexp"
 	"strconv"
@@ -51,12 +52,13 @@ type Hysteria struct {
 func (h *Hysteria) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
 	hdc := hyDialerWithContext{
 		ctx: context.Background(),
-		hyDialer: func() (net.PacketConn, error) {
-			return dialer.ListenPacket(ctx, "udp", "", h.Base.DialOptions(opts...)...)
+		hyDialer: func(network string) (net.PacketConn, error) {
+			return dialer.ListenPacket(ctx, network, "", h.Base.DialOptions(opts...)...)
 		},
 		remoteAddr: func(addr string) (net.Addr, error) {
 			return resolveUDPAddrWithPrefer(ctx, "udp", addr, h.prefer)
 		},
+		network: "udp",
 	}
 
 	tcpConn, err := h.client.DialTCP(metadata.RemoteAddress(), &hdc)
@@ -70,12 +72,13 @@ func (h *Hysteria) DialContext(ctx context.Context, metadata *C.Metadata, opts .
 func (h *Hysteria) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
 	hdc := hyDialerWithContext{
 		ctx: context.Background(),
-		hyDialer: func() (net.PacketConn, error) {
-			return dialer.ListenPacket(ctx, "udp", "", h.Base.DialOptions(opts...)...)
+		hyDialer: func(network string) (net.PacketConn, error) {
+			return dialer.ListenPacket(ctx, network, "", h.Base.DialOptions(opts...)...)
 		},
 		remoteAddr: func(addr string) (net.Addr, error) {
 			return resolveUDPAddrWithPrefer(ctx, "udp", addr, h.prefer)
 		},
+		network: "udp",
 	}
 	udpConn, err := h.client.DialUDP(&hdc)
 	if err != nil {
@@ -325,13 +328,14 @@ func (c *hyPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 }
 
 type hyDialerWithContext struct {
-	hyDialer   func() (net.PacketConn, error)
+	hyDialer   func(network string) (net.PacketConn, error)
 	ctx        context.Context
 	remoteAddr func(host string) (net.Addr, error)
+	network    string
 }
 
 func (h *hyDialerWithContext) ListenPacket() (net.PacketConn, error) {
-	return h.hyDialer()
+	return h.hyDialer(h.network)
 }
 
 func (h *hyDialerWithContext) Context() context.Context {
@@ -339,5 +343,16 @@ func (h *hyDialerWithContext) Context() context.Context {
 }
 
 func (h *hyDialerWithContext) RemoteAddr(host string) (net.Addr, error) {
-	return h.remoteAddr(host)
+	addr, err := h.remoteAddr(host)
+	if err != nil {
+		return nil, err
+	}
+	if addrPort, err := netip.ParseAddrPort(addr.String()); err != nil {
+		if addrPort.Addr().Is6() {
+			h.network = "udp6"
+		} else {
+			h.network = "udp"
+		}
+	}
+	return addr, nil
 }
diff --git a/adapter/outbound/tuic.go b/adapter/outbound/tuic.go
index 5afaa895..8df1539a 100644
--- a/adapter/outbound/tuic.go
+++ b/adapter/outbound/tuic.go
@@ -74,11 +74,16 @@ func (t *Tuic) ListenPacketContext(ctx context.Context, metadata *C.Metadata, op
 }
 
 func (t *Tuic) dial(ctx context.Context, opts ...dialer.Option) (pc net.PacketConn, addr net.Addr, err error) {
-	pc, err = dialer.ListenPacket(ctx, "udp", "", opts...)
+	udpAddr, err := resolveUDPAddrWithPrefer(ctx, "udp", t.addr, t.prefer)
 	if err != nil {
 		return nil, nil, err
 	}
-	addr, err = resolveUDPAddrWithPrefer(ctx, "udp", t.addr, t.prefer)
+	addr = udpAddr
+	network := "udp"
+	if udpAddr.AddrPort().Addr().Is6() {
+		network = "udp6"
+	}
+	pc, err = dialer.ListenPacket(ctx, network, "", opts...)
 	if err != nil {
 		return nil, nil, err
 	}