DomainStrategy support for all outbounds

app/proxyman/config.pb.go

@@ -115,6 +115,58 @@ func (AllocationStrategy_Type) EnumDescriptor() ([]byte, []int) {
 	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1, 0}
 }
 
+type SenderConfig_DomainStrategy int32
+
+const (
+	SenderConfig_AS_IS   SenderConfig_DomainStrategy = 0
+	SenderConfig_USE_IP  SenderConfig_DomainStrategy = 1
+	SenderConfig_USE_IP4 SenderConfig_DomainStrategy = 2
+	SenderConfig_USE_IP6 SenderConfig_DomainStrategy = 3
+)
+
+// Enum value maps for SenderConfig_DomainStrategy.
+var (
+	SenderConfig_DomainStrategy_name = map[int32]string{
+		0: "AS_IS",
+		1: "USE_IP",
+		2: "USE_IP4",
+		3: "USE_IP6",
+	}
+	SenderConfig_DomainStrategy_value = map[string]int32{
+		"AS_IS":   0,
+		"USE_IP":  1,
+		"USE_IP4": 2,
+		"USE_IP6": 3,
+	}
+)
+
+func (x SenderConfig_DomainStrategy) Enum() *SenderConfig_DomainStrategy {
+	p := new(SenderConfig_DomainStrategy)
+	*p = x
+	return p
+}
+
+func (x SenderConfig_DomainStrategy) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (SenderConfig_DomainStrategy) Descriptor() protoreflect.EnumDescriptor {
+	return file_app_proxyman_config_proto_enumTypes[2].Descriptor()
+}
+
+func (SenderConfig_DomainStrategy) Type() protoreflect.EnumType {
+	return &file_app_proxyman_config_proto_enumTypes[2]
+}
+
+func (x SenderConfig_DomainStrategy) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use SenderConfig_DomainStrategy.Descriptor instead.
+func (SenderConfig_DomainStrategy) EnumDescriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{6, 0}
+}
+
 type InboundConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -497,10 +549,11 @@ type SenderConfig struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Send traffic through the given IP. Only IP is allowed.
-	Via               *net.IPOrDomain        `protobuf:"bytes,1,opt,name=via,proto3" json:"via,omitempty"`
-	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"`
+	Via               *net.IPOrDomain             `protobuf:"bytes,1,opt,name=via,proto3" json:"via,omitempty"`
+	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    SenderConfig_DomainStrategy `protobuf:"varint,5,opt,name=domain_strategy,json=domainStrategy,proto3,enum=v2ray.core.app.proxyman.SenderConfig_DomainStrategy" json:"domain_strategy,omitempty"`
 }
 
 func (x *SenderConfig) Reset() {
@@ -563,6 +616,13 @@ func (x *SenderConfig) GetMultiplexSettings() *MultiplexingConfig {
 	return nil
 }
 
+func (x *SenderConfig) GetDomainStrategy() SenderConfig_DomainStrategy {
+	if x != nil {
+		return x.DomainStrategy
+	}
+	return SenderConfig_AS_IS
+}
+
 type MultiplexingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -811,8 +871,8 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
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@@ -832,21 +892,32 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
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+	0x6f, 0x33,
 }
 
 var (
@@ -861,48 +932,50 @@ 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: v2ray.core.app.proxyman.KnownProtocols
 	(AllocationStrategy_Type)(0),                             // 1: v2ray.core.app.proxyman.AllocationStrategy.Type
-	(*InboundConfig)(nil),                                    // 2: v2ray.core.app.proxyman.InboundConfig
-	(*AllocationStrategy)(nil),                               // 3: v2ray.core.app.proxyman.AllocationStrategy
-	(*SniffingConfig)(nil),                                   // 4: v2ray.core.app.proxyman.SniffingConfig
-	(*ReceiverConfig)(nil),                                   // 5: v2ray.core.app.proxyman.ReceiverConfig
-	(*InboundHandlerConfig)(nil),                             // 6: v2ray.core.app.proxyman.InboundHandlerConfig
-	(*OutboundConfig)(nil),                                   // 7: v2ray.core.app.proxyman.OutboundConfig
-	(*SenderConfig)(nil),                                     // 8: v2ray.core.app.proxyman.SenderConfig
-	(*MultiplexingConfig)(nil),                               // 9: v2ray.core.app.proxyman.MultiplexingConfig
-	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 10: v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 11: v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	(*net.PortRange)(nil),                                    // 12: v2ray.core.common.net.PortRange
-	(*net.IPOrDomain)(nil),                                   // 13: v2ray.core.common.net.IPOrDomain
-	(*internet.StreamConfig)(nil),                            // 14: v2ray.core.transport.internet.StreamConfig
-	(*anypb.Any)(nil),                                        // 15: google.protobuf.Any
-	(*internet.ProxyConfig)(nil),                             // 16: v2ray.core.transport.internet.ProxyConfig
+	(SenderConfig_DomainStrategy)(0),                         // 2: v2ray.core.app.proxyman.SenderConfig.DomainStrategy
+	(*InboundConfig)(nil),                                    // 3: v2ray.core.app.proxyman.InboundConfig
+	(*AllocationStrategy)(nil),                               // 4: v2ray.core.app.proxyman.AllocationStrategy
+	(*SniffingConfig)(nil),                                   // 5: v2ray.core.app.proxyman.SniffingConfig
+	(*ReceiverConfig)(nil),                                   // 6: v2ray.core.app.proxyman.ReceiverConfig
+	(*InboundHandlerConfig)(nil),                             // 7: v2ray.core.app.proxyman.InboundHandlerConfig
+	(*OutboundConfig)(nil),                                   // 8: v2ray.core.app.proxyman.OutboundConfig
+	(*SenderConfig)(nil),                                     // 9: v2ray.core.app.proxyman.SenderConfig
+	(*MultiplexingConfig)(nil),                               // 10: v2ray.core.app.proxyman.MultiplexingConfig
+	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 11: v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 12: v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	(*net.PortRange)(nil),                                    // 13: v2ray.core.common.net.PortRange
+	(*net.IPOrDomain)(nil),                                   // 14: v2ray.core.common.net.IPOrDomain
+	(*internet.StreamConfig)(nil),                            // 15: v2ray.core.transport.internet.StreamConfig
+	(*anypb.Any)(nil),                                        // 16: google.protobuf.Any
+	(*internet.ProxyConfig)(nil),                             // 17: v2ray.core.transport.internet.ProxyConfig
 }
 var file_app_proxyman_config_proto_depIdxs = []int32{
 	1,  // 0: v2ray.core.app.proxyman.AllocationStrategy.type:type_name -> v2ray.core.app.proxyman.AllocationStrategy.Type
-	10, // 1: v2ray.core.app.proxyman.AllocationStrategy.concurrency:type_name -> v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	11, // 2: v2ray.core.app.proxyman.AllocationStrategy.refresh:type_name -> v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	12, // 3: v2ray.core.app.proxyman.ReceiverConfig.port_range:type_name -> v2ray.core.common.net.PortRange
-	13, // 4: v2ray.core.app.proxyman.ReceiverConfig.listen:type_name -> v2ray.core.common.net.IPOrDomain
-	3,  // 5: v2ray.core.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> v2ray.core.app.proxyman.AllocationStrategy
-	14, // 6: v2ray.core.app.proxyman.ReceiverConfig.stream_settings:type_name -> v2ray.core.transport.internet.StreamConfig
+	11, // 1: v2ray.core.app.proxyman.AllocationStrategy.concurrency:type_name -> v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	12, // 2: v2ray.core.app.proxyman.AllocationStrategy.refresh:type_name -> v2ray.core.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	13, // 3: v2ray.core.app.proxyman.ReceiverConfig.port_range:type_name -> v2ray.core.common.net.PortRange
+	14, // 4: v2ray.core.app.proxyman.ReceiverConfig.listen:type_name -> v2ray.core.common.net.IPOrDomain
+	4,  // 5: v2ray.core.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> v2ray.core.app.proxyman.AllocationStrategy
+	15, // 6: v2ray.core.app.proxyman.ReceiverConfig.stream_settings:type_name -> v2ray.core.transport.internet.StreamConfig
 	0,  // 7: v2ray.core.app.proxyman.ReceiverConfig.domain_override:type_name -> v2ray.core.app.proxyman.KnownProtocols
-	4,  // 8: v2ray.core.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> v2ray.core.app.proxyman.SniffingConfig
-	15, // 9: v2ray.core.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> google.protobuf.Any
-	15, // 10: v2ray.core.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> google.protobuf.Any
-	13, // 11: v2ray.core.app.proxyman.SenderConfig.via:type_name -> v2ray.core.common.net.IPOrDomain
-	14, // 12: v2ray.core.app.proxyman.SenderConfig.stream_settings:type_name -> v2ray.core.transport.internet.StreamConfig
-	16, // 13: v2ray.core.app.proxyman.SenderConfig.proxy_settings:type_name -> v2ray.core.transport.internet.ProxyConfig
-	9,  // 14: v2ray.core.app.proxyman.SenderConfig.multiplex_settings:type_name -> v2ray.core.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: v2ray.core.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> v2ray.core.app.proxyman.SniffingConfig
+	16, // 9: v2ray.core.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> google.protobuf.Any
+	16, // 10: v2ray.core.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> google.protobuf.Any
+	14, // 11: v2ray.core.app.proxyman.SenderConfig.via:type_name -> v2ray.core.common.net.IPOrDomain
+	15, // 12: v2ray.core.app.proxyman.SenderConfig.stream_settings:type_name -> v2ray.core.transport.internet.StreamConfig
+	17, // 13: v2ray.core.app.proxyman.SenderConfig.proxy_settings:type_name -> v2ray.core.transport.internet.ProxyConfig
+	10, // 14: v2ray.core.app.proxyman.SenderConfig.multiplex_settings:type_name -> v2ray.core.app.proxyman.MultiplexingConfig
+	2,  // 15: v2ray.core.app.proxyman.SenderConfig.domain_strategy:type_name -> v2ray.core.app.proxyman.SenderConfig.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() }
@@ -1037,7 +1110,7 @@ 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

@@ -86,11 +86,19 @@ message InboundHandlerConfig {
 message OutboundConfig {}
 
 message SenderConfig {
+  enum DomainStrategy {
+    AS_IS = 0;
+    USE_IP = 1;
+    USE_IP4 = 2;
+    USE_IP6 = 3;
+  }
+
   // Send traffic through the given IP. Only IP is allowed.
   v2ray.core.common.net.IPOrDomain via = 1;
   v2ray.core.transport.internet.StreamConfig stream_settings = 2;
   v2ray.core.transport.internet.ProxyConfig proxy_settings = 3;
   MultiplexingConfig multiplex_settings = 4;
+  DomainStrategy domain_strategy = 5;
 }
 
 message MultiplexingConfig {

app/proxyman/outbound/handler.go

@@ -6,11 +6,13 @@ import (
 	core "github.com/v2fly/v2ray-core/v5"
 	"github.com/v2fly/v2ray-core/v5/app/proxyman"
 	"github.com/v2fly/v2ray-core/v5/common"
+	"github.com/v2fly/v2ray-core/v5/common/dice"
 	"github.com/v2fly/v2ray-core/v5/common/mux"
 	"github.com/v2fly/v2ray-core/v5/common/net"
 	"github.com/v2fly/v2ray-core/v5/common/net/packetaddr"
 	"github.com/v2fly/v2ray-core/v5/common/serial"
 	"github.com/v2fly/v2ray-core/v5/common/session"
+	"github.com/v2fly/v2ray-core/v5/features/dns"
 	"github.com/v2fly/v2ray-core/v5/features/outbound"
 	"github.com/v2fly/v2ray-core/v5/features/policy"
 	"github.com/v2fly/v2ray-core/v5/features/stats"
@@ -56,6 +58,7 @@ type Handler struct {
 	mux             *mux.ClientManager
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
+	dns             dns.Client
 }
 
 // NewHandler create a new Handler based on the given configuration.
@@ -123,6 +126,16 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 		}
 	}
 
+	if h.senderSettings != nil && h.senderSettings.DomainStrategy != proxyman.SenderConfig_AS_IS {
+		err := core.RequireFeatures(ctx, func(d dns.Client) error {
+			h.dns = d
+			return nil
+		})
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	h.proxy = proxyHandler
 	return h, nil
 }
@@ -208,7 +221,19 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (internet.Conn
 			}
 			outbound.Gateway = h.senderSettings.Via.AsAddress()
 		}
+
+		if h.senderSettings.DomainStrategy != proxyman.SenderConfig_AS_IS {
+			outbound := session.OutboundFromContext(ctx)
+			if outbound == nil {
+				outbound = new(session.Outbound)
+				ctx = session.ContextWithOutbound(ctx, outbound)
+			}
+			outbound.Resolver = func(ctx context.Context, domain string) net.Address {
+				return h.resolveIP(ctx, domain, h.Address())
+			}
+		}
 	}
+
 	enablePacketAddrCapture := true
 	if h.senderSettings != nil && h.senderSettings.ProxySettings != nil && h.senderSettings.ProxySettings.HasTag() && h.senderSettings.ProxySettings.TransportLayerProxy {
 		tag := h.senderSettings.ProxySettings.Tag
@@ -230,6 +255,22 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (internet.Conn
 	return h.getStatCouterConnection(conn), err
 }
 
+func (h *Handler) resolveIP(ctx context.Context, domain string, localAddr net.Address) net.Address {
+	strategy := h.senderSettings.DomainStrategy
+	ips, err := dns.LookupIPWithOption(h.dns, domain, dns.IPOption{
+		IPv4Enable: strategy == proxyman.SenderConfig_USE_IP || strategy == proxyman.SenderConfig_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()),
+		IPv6Enable: strategy == proxyman.SenderConfig_USE_IP || strategy == proxyman.SenderConfig_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()),
+		FakeEnable: false,
+	})
+	if err != nil {
+		newError("failed to get IP address for domain ", domain).Base(err).WriteToLog(session.ExportIDToError(ctx))
+	}
+	if len(ips) == 0 {
+		return nil
+	}
+	return net.IPAddress(ips[dice.Roll(len(ips))])
+}
+
 func (h *Handler) getStatCouterConnection(conn internet.Connection) internet.Connection {
 	if h.uplinkCounter != nil || h.downlinkCounter != nil {
 		return &internet.StatCouterConnection{

infra/conf/v4/v2ray.go

@@ -203,13 +203,14 @@ func (c *InboundDetourConfig) Build() (*core.InboundHandlerConfig, error) {
 }
 
 type OutboundDetourConfig struct {
-	Protocol      string                `json:"protocol"`
-	SendThrough   *cfgcommon.Address    `json:"sendThrough"`
-	Tag           string                `json:"tag"`
-	Settings      *json.RawMessage      `json:"settings"`
-	StreamSetting *StreamConfig         `json:"streamSettings"`
-	ProxySettings *proxycfg.ProxyConfig `json:"proxySettings"`
-	MuxSettings   *muxcfg.MuxConfig     `json:"mux"`
+	Protocol       string                `json:"protocol"`
+	SendThrough    *cfgcommon.Address    `json:"sendThrough"`
+	Tag            string                `json:"tag"`
+	Settings       *json.RawMessage      `json:"settings"`
+	StreamSetting  *StreamConfig         `json:"streamSettings"`
+	ProxySettings  *proxycfg.ProxyConfig `json:"proxySettings"`
+	MuxSettings    *muxcfg.MuxConfig     `json:"mux"`
+	DomainStrategy string                `json:"domainStrategy"`
 }
 
 // Build implements Buildable.
@@ -244,6 +245,16 @@ func (c *OutboundDetourConfig) Build() (*core.OutboundHandlerConfig, error) {
 		senderSettings.MultiplexSettings = c.MuxSettings.Build()
 	}
 
+	senderSettings.DomainStrategy = proxyman.SenderConfig_AS_IS
+	switch strings.ToLower(c.DomainStrategy) {
+	case "useip", "use_ip", "use-ip":
+		senderSettings.DomainStrategy = proxyman.SenderConfig_USE_IP
+	case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
+		senderSettings.DomainStrategy = proxyman.SenderConfig_USE_IP4
+	case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
+		senderSettings.DomainStrategy = proxyman.SenderConfig_USE_IP6
+	}
+
 	settings := []byte("{}")
 	if c.Settings != nil {
 		settings = ([]byte)(*c.Settings)

proxy/freedom/freedom.go

@@ -104,6 +104,11 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 			destination.Port = net.Port(server.Port)
 		}
 	}
+	if h.config.useIP() {
+		outbound.Resolver = func(ctx context.Context, domain string) net.Address {
+			return h.resolveIP(ctx, domain, dialer.Address())
+		}
+	}
 	newError("opening connection to ", destination).WriteToLog(session.ExportIDToError(ctx))
 
 	input := link.Reader
@@ -111,20 +116,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 
 	var conn internet.Connection
 	err := retry.ExponentialBackoff(5, 100).On(func() error {
-		dialDest := destination
-		if h.config.useIP() && dialDest.Address.Family().IsDomain() {
-			ip := h.resolveIP(ctx, dialDest.Address.Domain(), dialer.Address())
-			if ip != nil {
-				dialDest = net.Destination{
-					Network: dialDest.Network,
-					Address: ip,
-					Port:    dialDest.Port,
-				}
-				newError("dialing to ", dialDest).WriteToLog(session.ExportIDToError(ctx))
-			}
-		}
-
-		rawConn, err := dialer.Dial(ctx, dialDest)
+		rawConn, err := dialer.Dial(ctx, destination)
 		if err != nil {
 			return err
 		}