Add domainStrategy to outbound &

Add preferIPv4/6 to domainStrategy

app/proxyman/config.pb.go

@@ -69,6 +69,64 @@ func (KnownProtocols) EnumDescriptor() ([]byte, []int) {
 	return file_app_proxyman_config_proto_rawDescGZIP(), []int{0}
 }
 
+type DomainStrategy int32
+
+const (
+	DomainStrategy_AS_IS      DomainStrategy = 0
+	DomainStrategy_USE_IP     DomainStrategy = 1
+	DomainStrategy_USE_IP4    DomainStrategy = 2
+	DomainStrategy_USE_IP6    DomainStrategy = 3
+	DomainStrategy_PREFER_IP4 DomainStrategy = 4
+	DomainStrategy_PREFER_IP6 DomainStrategy = 5
+)
+
+// Enum value maps for DomainStrategy.
+var (
+	DomainStrategy_name = map[int32]string{
+		0: "AS_IS",
+		1: "USE_IP",
+		2: "USE_IP4",
+		3: "USE_IP6",
+		4: "PREFER_IP4",
+		5: "PREFER_IP6",
+	}
+	DomainStrategy_value = map[string]int32{
+		"AS_IS":      0,
+		"USE_IP":     1,
+		"USE_IP4":    2,
+		"USE_IP6":    3,
+		"PREFER_IP4": 4,
+		"PREFER_IP6": 5,
+	}
+)
+
+func (x DomainStrategy) Enum() *DomainStrategy {
+	p := new(DomainStrategy)
+	*p = x
+	return p
+}
+
+func (x DomainStrategy) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (DomainStrategy) Descriptor() protoreflect.EnumDescriptor {
+	return file_app_proxyman_config_proto_enumTypes[1].Descriptor()
+}
+
+func (DomainStrategy) Type() protoreflect.EnumType {
+	return &file_app_proxyman_config_proto_enumTypes[1]
+}
+
+func (x DomainStrategy) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use DomainStrategy.Descriptor instead.
+func (DomainStrategy) EnumDescriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1}
+}
+
 type AllocationStrategy_Type int32
 
 const (
@@ -105,11 +163,11 @@ func (x AllocationStrategy_Type) String() string {
 }
 
 func (AllocationStrategy_Type) Descriptor() protoreflect.EnumDescriptor {
-	return file_app_proxyman_config_proto_enumTypes[1].Descriptor()
+	return file_app_proxyman_config_proto_enumTypes[2].Descriptor()
 }
 
 func (AllocationStrategy_Type) Type() protoreflect.EnumType {
-	return &file_app_proxyman_config_proto_enumTypes[1]
+	return &file_app_proxyman_config_proto_enumTypes[2]
 }
 
 func (x AllocationStrategy_Type) Number() protoreflect.EnumNumber {
@@ -523,6 +581,7 @@ type SenderConfig struct {
 	StreamSettings    *internet.StreamConfig `protobuf:"bytes,2,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
 	ProxySettings     *internet.ProxyConfig  `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
 	MultiplexSettings *MultiplexingConfig    `protobuf:"bytes,4,opt,name=multiplex_settings,json=multiplexSettings,proto3" json:"multiplex_settings,omitempty"`
+	DomainStrategy    DomainStrategy         `protobuf:"varint,5,opt,name=domain_strategy,json=domainStrategy,proto3,enum=xray.app.proxyman.DomainStrategy" json:"domain_strategy,omitempty"`
 }
 
 func (x *SenderConfig) Reset() {
@@ -585,6 +644,13 @@ func (x *SenderConfig) GetMultiplexSettings() *MultiplexingConfig {
 	return nil
 }
 
+func (x *SenderConfig) GetDomainStrategy() DomainStrategy {
+	if x != nil {
+		return x.DomainStrategy
+	}
+	return DomainStrategy_AS_IS
+}
+
 type MultiplexingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -836,7 +902,7 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54,
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@@ -855,21 +921,32 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
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+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -884,48 +961,50 @@ func file_app_proxyman_config_proto_rawDescGZIP() []byte {
 	return file_app_proxyman_config_proto_rawDescData
 }
 
-var file_app_proxyman_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_app_proxyman_config_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
 var file_app_proxyman_config_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_app_proxyman_config_proto_goTypes = []interface{}{
 	(KnownProtocols)(0),                                      // 0: xray.app.proxyman.KnownProtocols
-	(AllocationStrategy_Type)(0),                             // 1: xray.app.proxyman.AllocationStrategy.Type
-	(*InboundConfig)(nil),                                    // 2: xray.app.proxyman.InboundConfig
-	(*AllocationStrategy)(nil),                               // 3: xray.app.proxyman.AllocationStrategy
-	(*SniffingConfig)(nil),                                   // 4: xray.app.proxyman.SniffingConfig
-	(*ReceiverConfig)(nil),                                   // 5: xray.app.proxyman.ReceiverConfig
-	(*InboundHandlerConfig)(nil),                             // 6: xray.app.proxyman.InboundHandlerConfig
-	(*OutboundConfig)(nil),                                   // 7: xray.app.proxyman.OutboundConfig
-	(*SenderConfig)(nil),                                     // 8: xray.app.proxyman.SenderConfig
-	(*MultiplexingConfig)(nil),                               // 9: xray.app.proxyman.MultiplexingConfig
-	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 10: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 11: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	(*net.PortRange)(nil),                                    // 12: xray.common.net.PortRange
-	(*net.IPOrDomain)(nil),                                   // 13: xray.common.net.IPOrDomain
-	(*internet.StreamConfig)(nil),                            // 14: xray.transport.internet.StreamConfig
-	(*serial.TypedMessage)(nil),                              // 15: xray.common.serial.TypedMessage
-	(*internet.ProxyConfig)(nil),                             // 16: xray.transport.internet.ProxyConfig
+	(DomainStrategy)(0),                                      // 1: xray.app.proxyman.DomainStrategy
+	(AllocationStrategy_Type)(0),                             // 2: xray.app.proxyman.AllocationStrategy.Type
+	(*InboundConfig)(nil),                                    // 3: xray.app.proxyman.InboundConfig
+	(*AllocationStrategy)(nil),                               // 4: xray.app.proxyman.AllocationStrategy
+	(*SniffingConfig)(nil),                                   // 5: xray.app.proxyman.SniffingConfig
+	(*ReceiverConfig)(nil),                                   // 6: xray.app.proxyman.ReceiverConfig
+	(*InboundHandlerConfig)(nil),                             // 7: xray.app.proxyman.InboundHandlerConfig
+	(*OutboundConfig)(nil),                                   // 8: xray.app.proxyman.OutboundConfig
+	(*SenderConfig)(nil),                                     // 9: xray.app.proxyman.SenderConfig
+	(*MultiplexingConfig)(nil),                               // 10: xray.app.proxyman.MultiplexingConfig
+	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 11: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 12: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	(*net.PortRange)(nil),                                    // 13: xray.common.net.PortRange
+	(*net.IPOrDomain)(nil),                                   // 14: xray.common.net.IPOrDomain
+	(*internet.StreamConfig)(nil),                            // 15: xray.transport.internet.StreamConfig
+	(*serial.TypedMessage)(nil),                              // 16: xray.common.serial.TypedMessage
+	(*internet.ProxyConfig)(nil),                             // 17: xray.transport.internet.ProxyConfig
 }
 var file_app_proxyman_config_proto_depIdxs = []int32{
-	1,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
-	10, // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	11, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	12, // 3: xray.app.proxyman.ReceiverConfig.port_range:type_name -> xray.common.net.PortRange
-	13, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
-	3,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
-	14, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	2,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
+	11, // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	12, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	13, // 3: xray.app.proxyman.ReceiverConfig.port_range:type_name -> xray.common.net.PortRange
+	14, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
+	4,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
+	15, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
 	0,  // 7: xray.app.proxyman.ReceiverConfig.domain_override:type_name -> xray.app.proxyman.KnownProtocols
-	4,  // 8: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
-	15, // 9: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
-	15, // 10: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
-	13, // 11: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
-	14, // 12: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
-	16, // 13: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
-	9,  // 14: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
-	15, // [15:15] is the sub-list for method output_type
-	15, // [15:15] is the sub-list for method input_type
-	15, // [15:15] is the sub-list for extension type_name
-	15, // [15:15] is the sub-list for extension extendee
-	0,  // [0:15] is the sub-list for field type_name
+	5,  // 8: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
+	16, // 9: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
+	16, // 10: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
+	14, // 11: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
+	15, // 12: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	17, // 13: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
+	10, // 14: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
+	1,  // 15: xray.app.proxyman.SenderConfig.domain_strategy:type_name -> xray.app.proxyman.DomainStrategy
+	16, // [16:16] is the sub-list for method output_type
+	16, // [16:16] is the sub-list for method input_type
+	16, // [16:16] is the sub-list for extension type_name
+	16, // [16:16] is the sub-list for extension extendee
+	0,  // [0:16] is the sub-list for field type_name
 }
 
 func init() { file_app_proxyman_config_proto_init() }
@@ -1060,7 +1139,7 @@ func file_app_proxyman_config_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_proxyman_config_proto_rawDesc,
-			NumEnums:      2,
+			NumEnums:      3,
 			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,

app/proxyman/config.proto

@@ -88,12 +88,22 @@ message InboundHandlerConfig {
 
 message OutboundConfig {}
 
+enum DomainStrategy {
+  AS_IS = 0;
+  USE_IP = 1;
+  USE_IP4 = 2;
+  USE_IP6 = 3;
+  PREFER_IP4 = 4;
+  PREFER_IP6 = 5;
+}
+
 message SenderConfig {
   // Send traffic through the given IP. Only IP is allowed.
   xray.common.net.IPOrDomain via = 1;
   xray.transport.internet.StreamConfig stream_settings = 2;
   xray.transport.internet.ProxyConfig proxy_settings = 3;
   MultiplexingConfig multiplex_settings = 4;
+  DomainStrategy domain_strategy = 5;
 }
 
 message MultiplexingConfig {

app/proxyman/outbound/handler.go

@@ -2,7 +2,7 @@ package outbound
 
 import (
 	"context"
-
+	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/transport/internet/stat"
 
 	"github.com/xtls/xray-core/app/proxyman"
@@ -54,6 +54,7 @@ type Handler struct {
 	streamSettings  *internet.MemoryStreamConfig
 	proxy           proxy.Outbound
 	outboundManager outbound.Manager
+	dnsClient       dns.Client
 	mux             *mux.ClientManager
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
@@ -66,6 +67,7 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 	h := &Handler{
 		tag:             config.Tag,
 		outboundManager: v.GetFeature(outbound.ManagerType()).(outbound.Manager),
+		dnsClient:       v.GetFeature(dns.ClientType()).(dns.Client),
 		uplinkCounter:   uplinkCounter,
 		downlinkCounter: downlinkCounter,
 	}
@@ -140,7 +142,47 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 			common.Interrupt(link.Writer)
 		}
 	} else {
-		if err := h.proxy.Process(ctx, link, h); err != nil {
+		outbound := session.OutboundFromContext(ctx)
+		destination := outbound.Target
+		var domainString string
+		if destination.Address.Family().IsDomain() {
+			domainString = destination.Address.Domain()
+		} else if outbound.RouteTarget.Address != nil && outbound.RouteTarget.Address.Family().IsDomain() {
+			domainString = outbound.RouteTarget.Address.Domain()
+		} else {
+			domainString = ""
+		}
+
+		if h.senderSettings != nil && h.senderSettings.DomainStrategy != proxyman.DomainStrategy_AS_IS && domainString != "" {
+			var ips []net.IP
+			var err error
+
+			option := dns.IPOption{
+				IPv4Enable: true,
+				IPv6Enable: true,
+				FakeEnable: false,
+			}
+
+			switch h.senderSettings.DomainStrategy {
+			case proxyman.DomainStrategy_USE_IP4:
+				option.IPv6Enable = false
+			case proxyman.DomainStrategy_USE_IP6:
+				option.IPv4Enable = false
+			}
+			ips, err = h.dnsClient.LookupIP(domainString, option)
+			if err == nil {
+				switch h.senderSettings.DomainStrategy {
+				case proxyman.DomainStrategy_PREFER_IP4:
+					ips = reorderAddresses(ips, false)
+				case proxyman.DomainStrategy_PREFER_IP6:
+					ips = reorderAddresses(ips, true)
+				}
+				destination.Address = net.IPAddress(ips[0])
+				outbound.Target = destination
+			}
+		}
+		err := h.proxy.Process(ctx, link, h)
+		if err != nil {
 			// Ensure outbound ray is properly closed.
 			newError("failed to process outbound traffic").Base(err).WriteToLog(session.ExportIDToError(ctx))
 			common.Interrupt(link.Writer)
@@ -151,6 +193,18 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 	}
 }
 
+func reorderAddresses(ips []net.IP, preferIPv6 bool) []net.IP {
+	var result []net.IP
+	for i := 0; i < 2; i++ {
+		for _, ip := range ips {
+			if (preferIPv6 == (i == 0)) == (ip.To4() == nil) {
+				result = append(result, ip)
+			}
+		}
+	}
+	return result
+}
+
 // Address implements internet.Dialer.
 func (h *Handler) Address() net.Address {
 	if h.senderSettings == nil || h.senderSettings.Via == nil {

infra/conf/xray.go

@@ -269,13 +269,14 @@ func (c *InboundDetourConfig) Build() (*core.InboundHandlerConfig, error) {
 }
 
 type OutboundDetourConfig struct {
-	Protocol      string           `json:"protocol"`
-	SendThrough   *Address         `json:"sendThrough"`
-	Tag           string           `json:"tag"`
-	Settings      *json.RawMessage `json:"settings"`
-	StreamSetting *StreamConfig    `json:"streamSettings"`
-	ProxySettings *ProxyConfig     `json:"proxySettings"`
-	MuxSettings   *MuxConfig       `json:"mux"`
+	Protocol       string           `json:"protocol"`
+	SendThrough    *Address         `json:"sendThrough"`
+	Tag            string           `json:"tag"`
+	Settings       *json.RawMessage `json:"settings"`
+	StreamSetting  *StreamConfig    `json:"streamSettings"`
+	ProxySettings  *ProxyConfig     `json:"proxySettings"`
+	MuxSettings    *MuxConfig       `json:"mux"`
+	DomainStrategy string           `json:"domainStrategy"`
 }
 
 func (c *OutboundDetourConfig) checkChainProxyConfig() error {
@@ -295,6 +296,21 @@ func (c *OutboundDetourConfig) Build() (*core.OutboundHandlerConfig, error) {
 		return nil, err
 	}
 
+	switch c.DomainStrategy {
+	case "UseIP":
+		senderSettings.DomainStrategy = proxyman.DomainStrategy_USE_IP
+	case "UseIPv4":
+		senderSettings.DomainStrategy = proxyman.DomainStrategy_USE_IP4
+	case "UseIPv6":
+		senderSettings.DomainStrategy = proxyman.DomainStrategy_USE_IP6
+	case "PreferIPv4":
+		senderSettings.DomainStrategy = proxyman.DomainStrategy_PREFER_IP4
+	case "PreferIPv6":
+		senderSettings.DomainStrategy = proxyman.DomainStrategy_PREFER_IP6
+	default:
+		senderSettings.DomainStrategy = proxyman.DomainStrategy_AS_IS
+	}
+
 	if c.SendThrough != nil {
 		address := c.SendThrough
 		if address.Family().IsDomain() {