mirror of
https://github.com/XTLS/Xray-core.git
synced 2025-04-30 17:38:41 +00:00
Enhance DNS and Dialer (#341)
This commit is contained in:
Jim Han
GitHub
parent
ad1807dd99
commit
db32ce6fd9
22 changed files with 682 additions and 290 deletions
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@ -84,6 +84,58 @@ func (TransportProtocol) EnumDescriptor() ([]byte, []int) {
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return file_transport_internet_config_proto_rawDescGZIP(), []int{0}
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}
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type DomainStrategy int32
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const (
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DomainStrategy_AS_IS DomainStrategy = 0
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DomainStrategy_USE_IP DomainStrategy = 1
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DomainStrategy_USE_IP4 DomainStrategy = 2
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DomainStrategy_USE_IP6 DomainStrategy = 3
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)
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// Enum value maps for DomainStrategy.
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var (
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DomainStrategy_name = map[int32]string{
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0: "AS_IS",
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1: "USE_IP",
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2: "USE_IP4",
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3: "USE_IP6",
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}
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DomainStrategy_value = map[string]int32{
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"AS_IS": 0,
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"USE_IP": 1,
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"USE_IP4": 2,
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"USE_IP6": 3,
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}
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)
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func (x DomainStrategy) Enum() *DomainStrategy {
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p := new(DomainStrategy)
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*p = x
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return p
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}
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func (x DomainStrategy) String() string {
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return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
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}
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func (DomainStrategy) Descriptor() protoreflect.EnumDescriptor {
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return file_transport_internet_config_proto_enumTypes[1].Descriptor()
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}
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func (DomainStrategy) Type() protoreflect.EnumType {
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return &file_transport_internet_config_proto_enumTypes[1]
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}
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func (x DomainStrategy) Number() protoreflect.EnumNumber {
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return protoreflect.EnumNumber(x)
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}
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// Deprecated: Use DomainStrategy.Descriptor instead.
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func (DomainStrategy) EnumDescriptor() ([]byte, []int) {
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return file_transport_internet_config_proto_rawDescGZIP(), []int{1}
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}
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type SocketConfig_TProxyMode int32
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const (
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@ -120,11 +172,11 @@ func (x SocketConfig_TProxyMode) String() string {
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}
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func (SocketConfig_TProxyMode) Descriptor() protoreflect.EnumDescriptor {
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return file_transport_internet_config_proto_enumTypes[1].Descriptor()
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return file_transport_internet_config_proto_enumTypes[2].Descriptor()
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}
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func (SocketConfig_TProxyMode) Type() protoreflect.EnumType {
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return &file_transport_internet_config_proto_enumTypes[1]
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return &file_transport_internet_config_proto_enumTypes[2]
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}
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func (x SocketConfig_TProxyMode) Number() protoreflect.EnumNumber {
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@ -305,7 +357,8 @@ type ProxyConfig struct {
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sizeCache protoimpl.SizeCache
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unknownFields protoimpl.UnknownFields
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Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
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Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
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TransportLayerProxy bool `protobuf:"varint,2,opt,name=transportLayerProxy,proto3" json:"transportLayerProxy,omitempty"`
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}
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func (x *ProxyConfig) Reset() {
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@ -347,6 +400,13 @@ func (x *ProxyConfig) GetTag() string {
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return ""
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}
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func (x *ProxyConfig) GetTransportLayerProxy() bool {
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if x != nil {
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return x.TransportLayerProxy
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}
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return false
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}
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// SocketConfig is options to be applied on network sockets.
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type SocketConfig struct {
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state protoimpl.MessageState
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@ -361,10 +421,12 @@ type SocketConfig struct {
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Tproxy SocketConfig_TProxyMode `protobuf:"varint,3,opt,name=tproxy,proto3,enum=xray.transport.internet.SocketConfig_TProxyMode" json:"tproxy,omitempty"`
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// ReceiveOriginalDestAddress is for enabling IP_RECVORIGDSTADDR socket
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// option. This option is for UDP only.
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ReceiveOriginalDestAddress bool `protobuf:"varint,4,opt,name=receive_original_dest_address,json=receiveOriginalDestAddress,proto3" json:"receive_original_dest_address,omitempty"`
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BindAddress []byte `protobuf:"bytes,5,opt,name=bind_address,json=bindAddress,proto3" json:"bind_address,omitempty"`
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BindPort uint32 `protobuf:"varint,6,opt,name=bind_port,json=bindPort,proto3" json:"bind_port,omitempty"`
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AcceptProxyProtocol bool `protobuf:"varint,7,opt,name=accept_proxy_protocol,json=acceptProxyProtocol,proto3" json:"accept_proxy_protocol,omitempty"`
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ReceiveOriginalDestAddress bool `protobuf:"varint,4,opt,name=receive_original_dest_address,json=receiveOriginalDestAddress,proto3" json:"receive_original_dest_address,omitempty"`
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BindAddress []byte `protobuf:"bytes,5,opt,name=bind_address,json=bindAddress,proto3" json:"bind_address,omitempty"`
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BindPort uint32 `protobuf:"varint,6,opt,name=bind_port,json=bindPort,proto3" json:"bind_port,omitempty"`
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AcceptProxyProtocol bool `protobuf:"varint,7,opt,name=accept_proxy_protocol,json=acceptProxyProtocol,proto3" json:"accept_proxy_protocol,omitempty"`
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DomainStrategy DomainStrategy `protobuf:"varint,8,opt,name=domain_strategy,json=domainStrategy,proto3,enum=xray.transport.internet.DomainStrategy" json:"domain_strategy,omitempty"`
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DialerProxy string `protobuf:"bytes,9,opt,name=dialer_proxy,json=dialerProxy,proto3" json:"dialer_proxy,omitempty"`
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}
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func (x *SocketConfig) Reset() {
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@ -448,6 +510,20 @@ func (x *SocketConfig) GetAcceptProxyProtocol() bool {
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return false
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}
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func (x *SocketConfig) GetDomainStrategy() DomainStrategy {
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if x != nil {
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return x.DomainStrategy
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}
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return DomainStrategy_AS_IS
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}
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func (x *SocketConfig) GetDialerProxy() string {
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if x != nil {
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return x.DialerProxy
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}
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return ""
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}
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var File_transport_internet_config_proto protoreflect.FileDescriptor
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var file_transport_internet_config_proto_rawDesc = []byte{
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@ -495,44 +571,58 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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0x64, 0x69, 0x61, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x18, 0x09, 0x20, 0x01,
|
||||
0x28, 0x09, 0x52, 0x0b, 0x64, 0x69, 0x61, 0x6c, 0x65, 0x72, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x22,
|
||||
0x2f, 0x0a, 0x0a, 0x54, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x4d, 0x6f, 0x64, 0x65, 0x12, 0x07, 0x0a,
|
||||
0x03, 0x4f, 0x66, 0x66, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x54, 0x50, 0x72, 0x6f, 0x78, 0x79,
|
||||
0x10, 0x01, 0x12, 0x0c, 0x0a, 0x08, 0x52, 0x65, 0x64, 0x69, 0x72, 0x65, 0x63, 0x74, 0x10, 0x02,
|
||||
0x2a, 0x5a, 0x0a, 0x11, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x50, 0x72, 0x6f,
|
||||
0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x12, 0x07, 0x0a, 0x03, 0x54, 0x43, 0x50, 0x10, 0x00, 0x12, 0x07,
|
||||
0x0a, 0x03, 0x55, 0x44, 0x50, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x4d, 0x4b, 0x43, 0x50, 0x10,
|
||||
0x02, 0x12, 0x0d, 0x0a, 0x09, 0x57, 0x65, 0x62, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x10, 0x03,
|
||||
0x12, 0x08, 0x0a, 0x04, 0x48, 0x54, 0x54, 0x50, 0x10, 0x04, 0x12, 0x10, 0x0a, 0x0c, 0x44, 0x6f,
|
||||
0x6d, 0x61, 0x69, 0x6e, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x10, 0x05, 0x2a, 0x41, 0x0a, 0x0e,
|
||||
0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x09,
|
||||
0x0a, 0x05, 0x41, 0x53, 0x5f, 0x49, 0x53, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45,
|
||||
0x5f, 0x49, 0x50, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34,
|
||||
0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10, 0x03, 0x42,
|
||||
0x67, 0x0a, 0x1b, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e,
|
||||
0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x50, 0x01,
|
||||
0x5a, 0x2c, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
|
||||
0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e,
|
||||
0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0xaa, 0x02,
|
||||
0x17, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e,
|
||||
0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
|
||||
}
|
||||
|
||||
var (
|
||||
|
|
@ -547,30 +637,32 @@ func file_transport_internet_config_proto_rawDescGZIP() []byte {
|
|||
return file_transport_internet_config_proto_rawDescData
|
||||
}
|
||||
|
||||
var file_transport_internet_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
|
||||
var file_transport_internet_config_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
|
||||
var file_transport_internet_config_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
|
||||
var file_transport_internet_config_proto_goTypes = []interface{}{
|
||||
(TransportProtocol)(0), // 0: xray.transport.internet.TransportProtocol
|
||||
(SocketConfig_TProxyMode)(0), // 1: xray.transport.internet.SocketConfig.TProxyMode
|
||||
(*TransportConfig)(nil), // 2: xray.transport.internet.TransportConfig
|
||||
(*StreamConfig)(nil), // 3: xray.transport.internet.StreamConfig
|
||||
(*ProxyConfig)(nil), // 4: xray.transport.internet.ProxyConfig
|
||||
(*SocketConfig)(nil), // 5: xray.transport.internet.SocketConfig
|
||||
(*serial.TypedMessage)(nil), // 6: xray.common.serial.TypedMessage
|
||||
(DomainStrategy)(0), // 1: xray.transport.internet.DomainStrategy
|
||||
(SocketConfig_TProxyMode)(0), // 2: xray.transport.internet.SocketConfig.TProxyMode
|
||||
(*TransportConfig)(nil), // 3: xray.transport.internet.TransportConfig
|
||||
(*StreamConfig)(nil), // 4: xray.transport.internet.StreamConfig
|
||||
(*ProxyConfig)(nil), // 5: xray.transport.internet.ProxyConfig
|
||||
(*SocketConfig)(nil), // 6: xray.transport.internet.SocketConfig
|
||||
(*serial.TypedMessage)(nil), // 7: xray.common.serial.TypedMessage
|
||||
}
|
||||
var file_transport_internet_config_proto_depIdxs = []int32{
|
||||
0, // 0: xray.transport.internet.TransportConfig.protocol:type_name -> xray.transport.internet.TransportProtocol
|
||||
6, // 1: xray.transport.internet.TransportConfig.settings:type_name -> xray.common.serial.TypedMessage
|
||||
7, // 1: xray.transport.internet.TransportConfig.settings:type_name -> xray.common.serial.TypedMessage
|
||||
0, // 2: xray.transport.internet.StreamConfig.protocol:type_name -> xray.transport.internet.TransportProtocol
|
||||
2, // 3: xray.transport.internet.StreamConfig.transport_settings:type_name -> xray.transport.internet.TransportConfig
|
||||
6, // 4: xray.transport.internet.StreamConfig.security_settings:type_name -> xray.common.serial.TypedMessage
|
||||
5, // 5: xray.transport.internet.StreamConfig.socket_settings:type_name -> xray.transport.internet.SocketConfig
|
||||
1, // 6: xray.transport.internet.SocketConfig.tproxy:type_name -> xray.transport.internet.SocketConfig.TProxyMode
|
||||
7, // [7:7] is the sub-list for method output_type
|
||||
7, // [7:7] is the sub-list for method input_type
|
||||
7, // [7:7] is the sub-list for extension type_name
|
||||
7, // [7:7] is the sub-list for extension extendee
|
||||
0, // [0:7] is the sub-list for field type_name
|
||||
3, // 3: xray.transport.internet.StreamConfig.transport_settings:type_name -> xray.transport.internet.TransportConfig
|
||||
7, // 4: xray.transport.internet.StreamConfig.security_settings:type_name -> xray.common.serial.TypedMessage
|
||||
6, // 5: xray.transport.internet.StreamConfig.socket_settings:type_name -> xray.transport.internet.SocketConfig
|
||||
2, // 6: xray.transport.internet.SocketConfig.tproxy:type_name -> xray.transport.internet.SocketConfig.TProxyMode
|
||||
1, // 7: xray.transport.internet.SocketConfig.domain_strategy:type_name -> xray.transport.internet.DomainStrategy
|
||||
8, // [8:8] is the sub-list for method output_type
|
||||
8, // [8:8] is the sub-list for method input_type
|
||||
8, // [8:8] is the sub-list for extension type_name
|
||||
8, // [8:8] is the sub-list for extension extendee
|
||||
0, // [0:8] is the sub-list for field type_name
|
||||
}
|
||||
|
||||
func init() { file_transport_internet_config_proto_init() }
|
||||
|
|
@ -633,7 +725,7 @@ func file_transport_internet_config_proto_init() {
|
|||
File: protoimpl.DescBuilder{
|
||||
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
|
||||
RawDescriptor: file_transport_internet_config_proto_rawDesc,
|
||||
NumEnums: 2,
|
||||
NumEnums: 3,
|
||||
NumMessages: 4,
|
||||
NumExtensions: 0,
|
||||
NumServices: 0,
|
||||
|
|
|
|||
|
|
@ -17,6 +17,13 @@ enum TransportProtocol {
|
|||
DomainSocket = 5;
|
||||
}
|
||||
|
||||
enum DomainStrategy {
|
||||
AS_IS = 0;
|
||||
USE_IP = 1;
|
||||
USE_IP4 = 2;
|
||||
USE_IP6 = 3;
|
||||
}
|
||||
|
||||
message TransportConfig {
|
||||
// Type of network that this settings supports.
|
||||
// Deprecated. Use the string form below.
|
||||
|
|
@ -47,7 +54,10 @@ message StreamConfig {
|
|||
SocketConfig socket_settings = 6;
|
||||
}
|
||||
|
||||
message ProxyConfig { string tag = 1; }
|
||||
message ProxyConfig {
|
||||
string tag = 1;
|
||||
bool transportLayerProxy = 2;
|
||||
}
|
||||
|
||||
// SocketConfig is options to be applied on network sockets.
|
||||
message SocketConfig {
|
||||
|
|
@ -78,4 +88,7 @@ message SocketConfig {
|
|||
uint32 bind_port = 6;
|
||||
|
||||
bool accept_proxy_protocol = 7;
|
||||
|
||||
DomainStrategy domain_strategy = 8;
|
||||
string dialer_proxy = 9;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -5,20 +5,35 @@ import (
|
|||
"syscall"
|
||||
"time"
|
||||
|
||||
"github.com/xtls/xray-core/common"
|
||||
"github.com/xtls/xray-core/common/dice"
|
||||
"github.com/xtls/xray-core/common/net"
|
||||
"github.com/xtls/xray-core/common/net/cnc"
|
||||
"github.com/xtls/xray-core/common/session"
|
||||
"github.com/xtls/xray-core/features/dns"
|
||||
"github.com/xtls/xray-core/features/outbound"
|
||||
"github.com/xtls/xray-core/transport"
|
||||
"github.com/xtls/xray-core/transport/pipe"
|
||||
)
|
||||
|
||||
var (
|
||||
effectiveSystemDialer SystemDialer = &DefaultSystemDialer{}
|
||||
)
|
||||
|
||||
// InitSystemDialer: It's private method and you are NOT supposed to use this function.
|
||||
func InitSystemDialer(dc dns.Client, om outbound.Manager) {
|
||||
effectiveSystemDialer.init(dc, om)
|
||||
}
|
||||
|
||||
type SystemDialer interface {
|
||||
Dial(ctx context.Context, source net.Address, destination net.Destination, sockopt *SocketConfig) (net.Conn, error)
|
||||
init(dc dns.Client, om outbound.Manager)
|
||||
}
|
||||
|
||||
type DefaultSystemDialer struct {
|
||||
controllers []controller
|
||||
dns dns.Client
|
||||
obm outbound.Manager
|
||||
}
|
||||
|
||||
func resolveSrcAddr(network net.Network, src net.Address) net.Addr {
|
||||
|
|
@ -43,7 +58,78 @@ func hasBindAddr(sockopt *SocketConfig) bool {
|
|||
return sockopt != nil && len(sockopt.BindAddress) > 0 && sockopt.BindPort > 0
|
||||
}
|
||||
|
||||
func (d *DefaultSystemDialer) lookupIP(domain string, strategy DomainStrategy, localAddr net.Address) ([]net.IP, error) {
|
||||
if d.dns == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
var lookup = d.dns.LookupIP
|
||||
|
||||
switch {
|
||||
case strategy == DomainStrategy_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()):
|
||||
if lookupIPv4, ok := d.dns.(dns.IPv4Lookup); ok {
|
||||
lookup = lookupIPv4.LookupIPv4
|
||||
}
|
||||
case strategy == DomainStrategy_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()):
|
||||
if lookupIPv4, ok := d.dns.(dns.IPv4Lookup); ok {
|
||||
lookup = lookupIPv4.LookupIPv4
|
||||
}
|
||||
case strategy == DomainStrategy_AS_IS:
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
return lookup(domain)
|
||||
}
|
||||
|
||||
func (d *DefaultSystemDialer) canLookupIP(ctx context.Context, dst net.Destination, sockopt *SocketConfig) bool {
|
||||
if sockopt == nil || dst.Address.Family().IsIP() || d.dns == nil {
|
||||
return false
|
||||
}
|
||||
if dst.Address.Domain() == LookupDomainFromContext(ctx) {
|
||||
newError("infinite loop detected").AtError().WriteToLog(session.ExportIDToError(ctx))
|
||||
return false
|
||||
}
|
||||
return sockopt.DomainStrategy != DomainStrategy_AS_IS
|
||||
}
|
||||
|
||||
func (d *DefaultSystemDialer) redirect(ctx context.Context, dst net.Destination, obt string) net.Conn {
|
||||
newError("redirecting request " + dst.String() + " to " + obt).WriteToLog(session.ExportIDToError(ctx))
|
||||
h := d.obm.GetHandler(obt)
|
||||
ctx = session.ContextWithOutbound(ctx, &session.Outbound{dst, nil})
|
||||
if h != nil {
|
||||
ur, uw := pipe.New(pipe.OptionsFromContext(ctx)...)
|
||||
dr, dw := pipe.New(pipe.OptionsFromContext(ctx)...)
|
||||
|
||||
go h.Dispatch(ctx, &transport.Link{ur, dw})
|
||||
nc := cnc.NewConnection(
|
||||
cnc.ConnectionInputMulti(uw),
|
||||
cnc.ConnectionOutputMulti(dr),
|
||||
cnc.ConnectionOnClose(common.ChainedClosable{uw, dw}),
|
||||
)
|
||||
return nc
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest net.Destination, sockopt *SocketConfig) (net.Conn, error) {
|
||||
newError("dialing to " + dest.String()).AtDebug().WriteToLog()
|
||||
if d.obm != nil && sockopt != nil && len(sockopt.DialerProxy) > 0 {
|
||||
nc := d.redirect(ctx, dest, sockopt.DialerProxy)
|
||||
if nc != nil {
|
||||
return nc, nil
|
||||
}
|
||||
}
|
||||
|
||||
if d.canLookupIP(ctx, dest, sockopt) {
|
||||
ips, err := d.lookupIP(dest.Address.String(), sockopt.DomainStrategy, src)
|
||||
if err == nil && len(ips) > 0 {
|
||||
dest.Address = net.IPAddress(ips[dice.Roll(len(ips))])
|
||||
newError("replace destination with " + dest.String()).AtInfo().WriteToLog()
|
||||
} else if err != nil {
|
||||
newError("failed to resolve ip").Base(err).AtWarning().WriteToLog()
|
||||
}
|
||||
}
|
||||
|
||||
if dest.Network == net.Network_UDP && !hasBindAddr(sockopt) {
|
||||
srcAddr := resolveSrcAddr(net.Network_UDP, src)
|
||||
if srcAddr == nil {
|
||||
|
|
@ -98,6 +184,11 @@ func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest ne
|
|||
return dialer.DialContext(ctx, dest.Network.SystemString(), dest.NetAddr())
|
||||
}
|
||||
|
||||
func (d *DefaultSystemDialer) init(dc dns.Client, om outbound.Manager) {
|
||||
d.dns = dc
|
||||
d.obm = om
|
||||
}
|
||||
|
||||
type PacketConnWrapper struct {
|
||||
conn net.PacketConn
|
||||
dest net.Addr
|
||||
|
|
@ -158,6 +249,8 @@ func WithAdapter(dialer SystemDialerAdapter) SystemDialer {
|
|||
}
|
||||
}
|
||||
|
||||
func (v *SimpleSystemDialer) init(_ dns.Client, _ outbound.Manager) {}
|
||||
|
||||
func (v *SimpleSystemDialer) Dial(ctx context.Context, src net.Address, dest net.Destination, sockopt *SocketConfig) (net.Conn, error) {
|
||||
return v.adapter.Dial(dest.Network.SystemString(), dest.NetAddr())
|
||||
}
|
||||
|
|
|
|||
18
transport/internet/system_dialer_context.go
Normal file
18
transport/internet/system_dialer_context.go
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
package internet
|
||||
|
||||
import "context"
|
||||
|
||||
type systemDialer int
|
||||
|
||||
const systemDialerKey systemDialer = 0
|
||||
|
||||
func ContextWithLookupDomain(ctx context.Context, domain string) context.Context {
|
||||
return context.WithValue(ctx, systemDialerKey, domain)
|
||||
}
|
||||
|
||||
func LookupDomainFromContext(ctx context.Context) string {
|
||||
if domain, ok := ctx.Value(systemDialerKey).(string); ok {
|
||||
return domain
|
||||
}
|
||||
return ""
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue