v25.8.3

Announcement of NFTs by Project X: https://github.com/XTLS/Xray-core/discussions/3633 Project X NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1 XHTTP: Beyond REALITY: https://github.com/XTLS/Xray-core/discussions/4113 REALITY NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2
UDS: Check address before listen (#4945 )
2025-08-22 17:46:48 +08:00 · 2025-08-03 11:09:00 +00:00 · 2025-08-03 11:02:55 +00:00 · 2025-08-03 11:02:08 +00:00 · 2025-08-03 10:15:42 +00:00 · 2025-08-03 01:06:47 +00:00
28 changed files with 1387 additions and 192 deletions
--- a/README.md
+++ b/README.md
@@ -1,17 +1,16 @@
 # Project X

-[![Project X NFT](https://raw2.seadn.io/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/7fa9ce900fb39b44226348db330e32/8b7fa9ce900fb39b44226348db330e32.svg)](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
-
-### [Collect a Project X NFT to support the development of Project X!](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
-
 [Project X](https://github.com/XTLS) originates from XTLS protocol, providing a set of network tools such as [Xray-core](https://github.com/XTLS/Xray-core) and [REALITY](https://github.com/XTLS/REALITY).

 [README](https://github.com/XTLS/Xray-core#readme) is open, so feel free to submit your project [here](https://github.com/XTLS/Xray-core/pulls).

 ## Donation & NFTs

+### [Collect a Project X NFT to support the development of Project X!](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
+
+[<img alt="Project X NFT" width="150px" src="https://raw2.seadn.io/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/7fa9ce900fb39b44226348db330e32/8b7fa9ce900fb39b44226348db330e32.svg" />](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
+
 - **ETH/USDT/USDC: `0xDc3Fe44F0f25D13CACb1C4896CD0D321df3146Ee`**
- **Project X NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1**
 - **REALITY NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2**
 - **Related links: https://opensea.io/collection/xtls, [Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633), [XHTTP: Beyond REALITY](https://github.com/XTLS/Xray-core/discussions/4113)**

--- a/app/proxyman/inbound/inbound.go
+++ b/app/proxyman/inbound/inbound.go
@@ -17,7 +17,7 @@ import (
 // Manager manages all inbound handlers.
 type Manager struct {
 	access          sync.RWMutex
-	untaggedHandler []inbound.Handler
+	untaggedHandlers []inbound.Handler
 	taggedHandlers  map[string]inbound.Handler
 	running         bool
 }
@@ -47,7 +47,7 @@ func (m *Manager) AddHandler(ctx context.Context, handler inbound.Handler) error
 		}
 		m.taggedHandlers[tag] = handler
 	} else {
-		m.untaggedHandler = append(m.untaggedHandler, handler)
+		m.untaggedHandlers = append(m.untaggedHandlers, handler)
 	}

 	if m.running {
@@ -94,8 +94,8 @@ func (m *Manager) ListHandlers(ctx context.Context) []inbound.Handler {
 	m.access.RLock()
 	defer m.access.RUnlock()

-	var response []inbound.Handler
-	copy(m.untaggedHandler, response)
+	response := make([]inbound.Handler, len(m.untaggedHandlers))
+	copy(response, m.untaggedHandlers)

 	for _, v := range m.taggedHandlers {
 		response = append(response, v)
@@ -117,7 +117,7 @@ func (m *Manager) Start() error {
 		}
 	}

-	for _, handler := range m.untaggedHandler {
+	for _, handler := range m.untaggedHandlers {
 		if err := handler.Start(); err != nil {
 			return err
 		}
@@ -138,7 +138,7 @@ func (m *Manager) Close() error {
 			errs = append(errs, err)
 		}
 	}
-	for _, handler := range m.untaggedHandler {
+	for _, handler := range m.untaggedHandlers {
 		if err := handler.Close(); err != nil {
 			errs = append(errs, err)
 		}
--- a/app/proxyman/outbound/outbound.go
+++ b/app/proxyman/outbound/outbound.go
@@ -150,8 +150,8 @@ func (m *Manager) ListHandlers(ctx context.Context) []outbound.Handler {
 	m.access.RLock()
 	defer m.access.RUnlock()

-	var response []outbound.Handler
-	copy(m.untaggedHandlers, response)
+	response := make([]outbound.Handler, len(m.untaggedHandlers))
+	copy(response, m.untaggedHandlers)

 	for _, v := range m.taggedHandler {
 		response = append(response, v)
--- a/app/version/config.pb.go
+++ b/app/version/config.pb.go
@@ -0,0 +1,152 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
+// source: app/version/config.proto
+
+package version
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Config struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	CoreVersion string `protobuf:"bytes,1,opt,name=core_version,json=coreVersion,proto3" json:"core_version,omitempty"`
+	MinVersion  string `protobuf:"bytes,2,opt,name=min_version,json=minVersion,proto3" json:"min_version,omitempty"`
+	MaxVersion  string `protobuf:"bytes,3,opt,name=max_version,json=maxVersion,proto3" json:"max_version,omitempty"`
+}
+
+func (x *Config) Reset() {
+	*x = Config{}
+	mi := &file_app_version_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *Config) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Config) ProtoMessage() {}
+
+func (x *Config) ProtoReflect() protoreflect.Message {
+	mi := &file_app_version_config_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Config.ProtoReflect.Descriptor instead.
+func (*Config) Descriptor() ([]byte, []int) {
+	return file_app_version_config_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Config) GetCoreVersion() string {
+	if x != nil {
+		return x.CoreVersion
+	}
+	return ""
+}
+
+func (x *Config) GetMinVersion() string {
+	if x != nil {
+		return x.MinVersion
+	}
+	return ""
+}
+
+func (x *Config) GetMaxVersion() string {
+	if x != nil {
+		return x.MaxVersion
+	}
+	return ""
+}
+
+var File_app_version_config_proto protoreflect.FileDescriptor
+
+var file_app_version_config_proto_rawDesc = []byte{
+	0x0a, 0x18, 0x61, 0x70, 0x70, 0x2f, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x2f, 0x63, 0x6f,
+	0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x10, 0x78, 0x72, 0x61, 0x79,
+	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x22, 0x6d, 0x0a, 0x06,
+	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x21, 0x0a, 0x0c, 0x63, 0x6f, 0x72, 0x65, 0x5f, 0x76,
+	0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x63, 0x6f,
+	0x72, 0x65, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x1f, 0x0a, 0x0b, 0x6d, 0x69, 0x6e,
+	0x5f, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a,
+	0x6d, 0x69, 0x6e, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x1f, 0x0a, 0x0b, 0x6d, 0x61,
+	0x78, 0x5f, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x0a, 0x6d, 0x61, 0x78, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x42, 0x52, 0x0a, 0x14, 0x63,
+	0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x76, 0x65, 0x72, 0x73,
+	0x69, 0x6f, 0x6e, 0x50, 0x01, 0x5a, 0x25, 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, 0x61, 0x70, 0x70, 0x2f, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0xaa, 0x02, 0x10, 0x58,
+	0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_app_version_config_proto_rawDescOnce sync.Once
+	file_app_version_config_proto_rawDescData = file_app_version_config_proto_rawDesc
+)
+
+func file_app_version_config_proto_rawDescGZIP() []byte {
+	file_app_version_config_proto_rawDescOnce.Do(func() {
+		file_app_version_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_version_config_proto_rawDescData)
+	})
+	return file_app_version_config_proto_rawDescData
+}
+
+var file_app_version_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_app_version_config_proto_goTypes = []any{
+	(*Config)(nil), // 0: xray.app.version.Config
+}
+var file_app_version_config_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_app_version_config_proto_init() }
+func file_app_version_config_proto_init() {
+	if File_app_version_config_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_app_version_config_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_app_version_config_proto_goTypes,
+		DependencyIndexes: file_app_version_config_proto_depIdxs,
+		MessageInfos:      file_app_version_config_proto_msgTypes,
+	}.Build()
+	File_app_version_config_proto = out.File
+	file_app_version_config_proto_rawDesc = nil
+	file_app_version_config_proto_goTypes = nil
+	file_app_version_config_proto_depIdxs = nil
+}
--- a/app/version/config.proto
+++ b/app/version/config.proto
@@ -0,0 +1,14 @@
+syntax = "proto3";
+
+package xray.app.version;
+option csharp_namespace = "Xray.App.Version";
+option go_package = "github.com/xtls/xray-core/app/version";
+option java_package = "com.xray.app.version";
+option java_multiple_files = true;
+
+
+message Config {
+  string core_version = 1;
+  string min_version = 2;
+  string max_version = 3;
+}
--- a/app/version/version.go
+++ b/app/version/version.go
@@ -0,0 +1,77 @@
+package version
+
+import (
+	"context"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"strconv"
+	"strings"
+)
+
+type Version struct {
+	config *Config
+	ctx    context.Context
+}
+
+func New(ctx context.Context, config *Config) (*Version, error) {
+	if config.MinVersion != "" {
+		result, err := compareVersions(config.MinVersion, config.CoreVersion)
+		if err != nil {
+			return nil, err
+		}
+		if result > 0 {
+			return nil, errors.New("this config must be run on version ", config.MinVersion, " or higher")
+		}
+	}
+	if config.MaxVersion != "" {
+		result, err := compareVersions(config.MaxVersion, config.CoreVersion)
+		if err != nil {
+			return nil, err
+		}
+		if result < 0 {
+			return nil, errors.New("this config should be run on version ", config.MaxVersion, " or lower")
+		}
+	}
+	return &Version{config: config, ctx: ctx}, nil
+}
+
+func compareVersions(v1, v2 string) (int, error) {
+	// Split version strings into components
+	v1Parts := strings.Split(v1, ".")
+	v2Parts := strings.Split(v2, ".")
+
+	// Pad shorter versions with zeros
+	for len(v1Parts) < len(v2Parts) {
+		v1Parts = append(v1Parts, "0")
+	}
+	for len(v2Parts) < len(v1Parts) {
+		v2Parts = append(v2Parts, "0")
+	}
+
+	// Compare each part
+	for i := 0; i < len(v1Parts); i++ {
+		// Convert parts to integers
+		n1, err := strconv.Atoi(v1Parts[i])
+		if err != nil {
+			return 0, errors.New("invalid version component ", v1Parts[i], " in ", v1)
+		}
+		n2, err := strconv.Atoi(v2Parts[i])
+		if err != nil {
+			return 0, errors.New("invalid version component ", v2Parts[i], " in ", v2)
+		}
+
+		if n1 < n2 {
+			return -1, nil // v1 < v2
+		}
+		if n1 > n2 {
+			return 1, nil // v1 > v2
+		}
+	}
+	return 0, nil // v1 == v2
+}
+
+func init() {
+	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
+		return New(ctx, config.(*Config))
+	}))
+}
--- a/core/core.go
+++ b/core/core.go
@@ -18,8 +18,8 @@ import (

 var (
 	Version_x byte = 25
-	Version_y byte = 7
-	Version_z byte = 25
+	Version_y byte = 8
+	Version_z byte = 3
 )

 var (
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module github.com/xtls/xray-core
 go 1.24

 require (
-	github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0
 	github.com/cloudflare/circl v1.6.1
 	github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344
 	github.com/golang/mock v1.7.0-rc.1
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,3 @@
-github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0 h1:Wo41lDOevRJSGpevP+8Pk5bANX7fJacO2w04aqLiC5I=
-github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0/go.mod h1:FVGavL/QEBQDcBpr3fAojoK17xX5k9bicBphrOpP7uM=
 github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
 github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/cloudflare/circl v1.6.1 h1:zqIqSPIndyBh1bjLVVDHMPpVKqp8Su/V+6MeDzzQBQ0=
--- a/infra/conf/dokodemo.go
+++ b/infra/conf/dokodemo.go
@@ -1,26 +1,35 @@
 package conf

 import (
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/proxy/dokodemo"
 	"google.golang.org/protobuf/proto"
 )

 type DokodemoConfig struct {
-	Host        *Address     `json:"address"`
-	PortValue   uint16       `json:"port"`
-	NetworkList *NetworkList `json:"network"`
-	Redirect    bool         `json:"followRedirect"`
-	UserLevel   uint32       `json:"userLevel"`
+	Address        *Address          `json:"address"`
+	Port           uint16            `json:"port"`
+	PortMap        map[string]string `json:"portMap"`
+	Network        *NetworkList      `json:"network"`
+	FollowRedirect bool              `json:"followRedirect"`
+	UserLevel      uint32            `json:"userLevel"`
 }

 func (v *DokodemoConfig) Build() (proto.Message, error) {
 	config := new(dokodemo.Config)
-	if v.Host != nil {
-		config.Address = v.Host.Build()
+	if v.Address != nil {
+		config.Address = v.Address.Build()
 	}
-	config.Port = uint32(v.PortValue)
-	config.Networks = v.NetworkList.Build()
-	config.FollowRedirect = v.Redirect
+	config.Port = uint32(v.Port)
+	config.PortMap = v.PortMap
+	for _, v := range config.PortMap {
+		if _, _, err := net.SplitHostPort(v); err != nil {
+			return nil, errors.New("invalid portMap: ", v).Base(err)
+		}
+	}
+	config.Networks = v.Network.Build()
+	config.FollowRedirect = v.FollowRedirect
 	config.UserLevel = v.UserLevel
 	return config, nil
 }
--- a/infra/conf/transport_internet.go
+++ b/infra/conf/transport_internet.go
@@ -412,6 +412,10 @@ type TLSConfig struct {
 	MasterKeyLog                         string           `json:"masterKeyLog"`
 	ServerNameToVerify                   string           `json:"serverNameToVerify"`
 	VerifyPeerCertInNames                []string         `json:"verifyPeerCertInNames"`
+	ECHServerKeys                        string           `json:"echServerKeys"`
+	ECHConfigList                        string           `json:"echConfigList"`
+	ECHForceQuery                        string           `json:"echForceQuery"`
+	ECHSocketSettings                    *SocketConfig    `json:"echSockopt"`
 }

 // Build implements Buildable.
@@ -435,7 +439,7 @@ func (c *TLSConfig) Build() (proto.Message, error) {
 	}
 	if len(config.NextProtocol) > 1 {
 		for _, p := range config.NextProtocol {
-			if tcp.IsFromMitm(p) {
+			if tls.IsFromMitm(p) {
 				return nil, errors.New(`only one element is allowed in "alpn" when using "fromMitm" in it`)
 			}
 		}
@@ -483,6 +487,29 @@ func (c *TLSConfig) Build() (proto.Message, error) {
 	}
 	config.VerifyPeerCertInNames = c.VerifyPeerCertInNames

+	if c.ECHServerKeys != "" {
+		EchPrivateKey, err := base64.StdEncoding.DecodeString(c.ECHServerKeys)
+		if err != nil {
+			return nil, errors.New("invalid ECH Config", c.ECHServerKeys)
+		}
+		config.EchServerKeys = EchPrivateKey
+	}
+	switch c.ECHForceQuery {
+	case "none", "half", "full", "":
+		config.EchForceQuery = c.ECHForceQuery
+	default:
+		return nil, errors.New(`invalid "echForceQuery": `, c.ECHForceQuery)
+	}
+	config.EchForceQuery = c.ECHForceQuery
+	config.EchConfigList = c.ECHConfigList
+	if c.ECHSocketSettings != nil {
+		ss, err := c.ECHSocketSettings.Build()
+		if err != nil {
+			return nil, errors.New("Failed to build ech sockopt.").Base(err)
+		}
+		config.EchSocketSettings = ss
+	}
+
 	return config, nil
 }

@@ -613,6 +640,9 @@ func (c *REALITYConfig) Build() (proto.Message, error) {
 		config.MaxTimeDiff = c.MaxTimeDiff

 		if c.Mldsa65Seed != "" {
+			if c.Mldsa65Seed == c.PrivateKey {
+				return nil, errors.New(`"mldsa65Seed" and "privateKey" can not be the same value: `, c.Mldsa65Seed)
+			}
 			if config.Mldsa65Seed, err = base64.RawURLEncoding.DecodeString(c.Mldsa65Seed); err != nil || len(config.Mldsa65Seed) != 32 {
 				return nil, errors.New(`invalid "mldsa65Seed": `, c.Mldsa65Seed)
 			}
--- a/infra/conf/version.go
+++ b/infra/conf/version.go
@@ -0,0 +1,22 @@
+package conf
+
+import (
+	"github.com/xtls/xray-core/app/version"
+	"github.com/xtls/xray-core/core"
+	"strconv"
+)
+
+type VersionConfig struct {
+	MinVersion string `json:"min"`
+	MaxVersion string `json:"max"`
+}
+
+func (c *VersionConfig) Build() (*version.Config, error) {
+	coreVersion := strconv.Itoa(int(core.Version_x)) + "." + strconv.Itoa(int(core.Version_y)) + "." + strconv.Itoa(int(core.Version_z))
+
+	return &version.Config{
+		CoreVersion: coreVersion,
+		MinVersion:  c.MinVersion,
+		MaxVersion:  c.MaxVersion,
+	}, nil
+}
--- a/infra/conf/xray.go
+++ b/infra/conf/xray.go
@@ -21,6 +21,7 @@ import (

 var (
 	inboundConfigLoader = NewJSONConfigLoader(ConfigCreatorCache{
+		"tunnel":        func() interface{} { return new(DokodemoConfig) },
 		"dokodemo-door": func() interface{} { return new(DokodemoConfig) },
 		"http":          func() interface{} { return new(HTTPServerConfig) },
 		"shadowsocks":   func() interface{} { return new(ShadowsocksServerConfig) },
@@ -33,8 +34,10 @@ var (
 	}, "protocol", "settings")

 	outboundConfigLoader = NewJSONConfigLoader(ConfigCreatorCache{
+		"block":       func() interface{} { return new(BlackholeConfig) },
 		"blackhole":   func() interface{} { return new(BlackholeConfig) },
 		"loopback":    func() interface{} { return new(LoopbackConfig) },
+		"direct":      func() interface{} { return new(FreedomConfig) },
 		"freedom":     func() interface{} { return new(FreedomConfig) },
 		"http":        func() interface{} { return new(HTTPClientConfig) },
 		"shadowsocks": func() interface{} { return new(ShadowsocksClientConfig) },
@@ -242,7 +245,7 @@ func (c *InboundDetourConfig) Build() (*core.InboundHandlerConfig, error) {
 		return nil, errors.New("failed to load inbound detour config for protocol ", c.Protocol).Base(err)
 	}
 	if dokodemoConfig, ok := rawConfig.(*DokodemoConfig); ok {
-		receiverSettings.ReceiveOriginalDestination = dokodemoConfig.Redirect
+		receiverSettings.ReceiveOriginalDestination = dokodemoConfig.FollowRedirect
 	}
 	ts, err := rawConfig.(Buildable).Build()
 	if err != nil {
@@ -380,6 +383,7 @@ type Config struct {
 	FakeDNS          *FakeDNSConfig          `json:"fakeDns"`
 	Observatory      *ObservatoryConfig      `json:"observatory"`
 	BurstObservatory *BurstObservatoryConfig `json:"burstObservatory"`
+	Version          *VersionConfig          `json:"version"`
 }

 func (c *Config) findInboundTag(tag string) int {
@@ -448,6 +452,10 @@ func (c *Config) Override(o *Config, fn string) {
 		c.BurstObservatory = o.BurstObservatory
 	}

+	if o.Version != nil {
+		c.Version = o.Version
+	}
+
 	// update the Inbound in slice if the only one in override config has same tag
 	if len(o.InboundConfigs) > 0 {
 		for i := range o.InboundConfigs {
@@ -588,6 +596,14 @@ func (c *Config) Build() (*core.Config, error) {
 		config.App = append(config.App, serial.ToTypedMessage(r))
 	}

+	if c.Version != nil {
+		r, err := c.Version.Build()
+		if err != nil {
+			return nil, errors.New("failed to build version configuration").Base(err)
+		}
+		config.App = append(config.App, serial.ToTypedMessage(r))
+	}
+
 	var inbounds []InboundDetourConfig

 	if len(c.InboundConfigs) > 0 {
--- a/main/commands/all/api/api.go
+++ b/main/commands/all/api/api.go
@@ -23,6 +23,8 @@ var CmdAPI = &base.Command{
 		cmdRemoveOutbounds,
 		cmdListInbounds,
 		cmdListOutbounds,
+		cmdAddInboundUsers,
+		cmdRemoveInboundUsers,
 		cmdInboundUser,
 		cmdInboundUserCount,
 		cmdAddRules,
--- a/main/commands/all/api/inbound_user_add.go
+++ b/main/commands/all/api/inbound_user_add.go
@@ -0,0 +1,144 @@
+package api
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/xtls/xray-core/common/protocol"
+
+	handlerService "github.com/xtls/xray-core/app/proxyman/command"
+	cserial "github.com/xtls/xray-core/common/serial"
+
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/infra/conf"
+	"github.com/xtls/xray-core/infra/conf/serial"
+	"github.com/xtls/xray-core/proxy/shadowsocks"
+	"github.com/xtls/xray-core/proxy/shadowsocks_2022"
+	"github.com/xtls/xray-core/proxy/trojan"
+	vlessin "github.com/xtls/xray-core/proxy/vless/inbound"
+	vmessin "github.com/xtls/xray-core/proxy/vmess/inbound"
+
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdAddInboundUsers = &base.Command{
+	CustomFlags: true,
+	UsageLine:   "{{.Exec}} api adu [--server=127.0.0.1:8080] <c1.json> [c2.json]...",
+	Short:       "Add users to inbounds",
+	Long: `
+Add users to inbounds.
+Arguments:
+	-s, -server
+		The API server address. Default 127.0.0.1:8080
+	-t, -timeout
+		Timeout seconds to call API. Default 3
+Example:
+    {{.Exec}} {{.LongName}} --server=127.0.0.1:8080  c1.json c2.json
+`,
+	Run: executeAddInboundUsers,
+}
+
+func executeAddInboundUsers(cmd *base.Command, args []string) {
+	setSharedFlags(cmd)
+	cmd.Flag.Parse(args)
+	unnamedArgs := cmd.Flag.Args()
+	inbs := extractInboundsConfig(unnamedArgs)
+
+	conn, ctx, close := dialAPIServer()
+	defer close()
+	client := handlerService.NewHandlerServiceClient(conn)
+
+	success := 0
+	for _, inb := range inbs {
+		success += executeInboundUserAction(ctx, client, inb, addInboundUserAction)
+	}
+	fmt.Println("Added", success, "user(s) in total.")
+}
+
+func addInboundUserAction(ctx context.Context, client handlerService.HandlerServiceClient, tag string, user *protocol.User) error {
+	fmt.Println("add user:", user.Email)
+	_, err := client.AlterInbound(ctx, &handlerService.AlterInboundRequest{
+		Tag: tag,
+		Operation: cserial.ToTypedMessage(
+			&handlerService.AddUserOperation{
+				User: user,
+			}),
+	})
+	return err
+}
+
+func extractInboundUsers(inb *core.InboundHandlerConfig) []*protocol.User {
+	if inb == nil {
+		return nil
+	}
+	inst, err := inb.ProxySettings.GetInstance()
+	if err != nil || inst == nil {
+		fmt.Println("failed to get inbound instance:", err)
+		return nil
+	}
+	switch ty := inst.(type) {
+	case *vmessin.Config:
+		return ty.User
+	case *vlessin.Config:
+		return ty.Clients
+	case *trojan.ServerConfig:
+		return ty.Users
+	case *shadowsocks.ServerConfig:
+		return ty.Users
+	case *shadowsocks_2022.MultiUserServerConfig:
+		return ty.Users
+	default:
+		fmt.Println("unsupported inbound type")
+	}
+	return nil
+}
+
+func extractInboundsConfig(unnamedArgs []string) []conf.InboundDetourConfig {
+	ins := make([]conf.InboundDetourConfig, 0)
+	for _, arg := range unnamedArgs {
+		r, err := loadArg(arg)
+		if err != nil {
+			base.Fatalf("failed to load %s: %s", arg, err)
+		}
+		conf, err := serial.DecodeJSONConfig(r)
+		if err != nil {
+			base.Fatalf("failed to decode %s: %s", arg, err)
+		}
+		ins = append(ins, conf.InboundConfigs...)
+	}
+	return ins
+}
+
+func executeInboundUserAction(ctx context.Context, client handlerService.HandlerServiceClient, inb conf.InboundDetourConfig, action func(ctx context.Context, client handlerService.HandlerServiceClient, tag string, user *protocol.User) error) int {
+	success := 0
+
+	tag := inb.Tag
+	if len(tag) < 1 {
+		return success
+	}
+
+	fmt.Println("processing inbound:", tag)
+	built, err := inb.Build()
+	if err != nil {
+		fmt.Println("failed to build config:", err)
+		return success
+	}
+
+	users := extractInboundUsers(built)
+	if users == nil {
+		return success
+	}
+
+	for _, user := range users {
+		if len(user.Email) < 1 {
+			continue
+		}
+		if err := action(ctx, client, inb.Tag, user); err == nil {
+			fmt.Println("result: ok")
+			success += 1
+		} else {
+			fmt.Println(err)
+		}
+	}
+	return success
+}
--- a/main/commands/all/api/inbound_user_remove.go
+++ b/main/commands/all/api/inbound_user_remove.go
@@ -0,0 +1,62 @@
+package api
+
+import (
+	"fmt"
+
+	handlerService "github.com/xtls/xray-core/app/proxyman/command"
+	cserial "github.com/xtls/xray-core/common/serial"
+
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdRemoveInboundUsers = &base.Command{
+	CustomFlags: true,
+	UsageLine:   "{{.Exec}} api rmu [--server=127.0.0.1:8080] -tag=tag <email1> [email2]...",
+	Short:       "Remove users from inbounds",
+	Long: `
+Remove users from inbounds.
+Arguments:
+	-s, -server
+		The API server address. Default 127.0.0.1:8080
+	-t, -timeout
+		Timeout seconds to call API. Default 3
+	-tag
+		Inbound tag
+Example:
+    {{.Exec}} {{.LongName}} --server=127.0.0.1:8080 -tag="vless-in" "xray@love.com" ...
+`,
+	Run: executeRemoveUsers,
+}
+
+func executeRemoveUsers(cmd *base.Command, args []string) {
+	setSharedFlags(cmd)
+	var tag string
+	cmd.Flag.StringVar(&tag, "tag", "", "")
+	cmd.Flag.Parse(args)
+	emails := cmd.Flag.Args()
+	if len(tag) < 1 {
+		base.Fatalf("inbound tag not specified")
+	}
+
+	conn, ctx, close := dialAPIServer()
+	defer close()
+	client := handlerService.NewHandlerServiceClient(conn)
+
+	success := 0
+	for _, email := range emails {
+		fmt.Println("remove user:", email)
+		_, err := client.AlterInbound(ctx, &handlerService.AlterInboundRequest{
+			Tag: tag,
+			Operation: cserial.ToTypedMessage(
+				&handlerService.RemoveUserOperation{
+					Email: email,
+				}),
+		})
+		if err == nil {
+			success += 1
+		} else {
+			fmt.Println(err)
+		}
+	}
+	fmt.Println("Removed", success, "user(s) in total.")
+}
--- a/main/commands/all/tls/ech.go
+++ b/main/commands/all/tls/ech.go
@@ -1,25 +1,26 @@
 package tls

 import (
-	"encoding/json"
+	"encoding/base64"
 	"encoding/pem"
 	"os"
-	"strings"

-	"github.com/OmarTariq612/goech"
-	"github.com/cloudflare/circl/hpke"
+	"github.com/xtls/reality/hpke"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/main/commands/base"
+	"github.com/xtls/xray-core/transport/internet/tls"
+	"golang.org/x/crypto/cryptobyte"
 )

 var cmdECH = &base.Command{
-	UsageLine: `{{.Exec}} tls ech [--serverName (string)] [--json]`,
+	UsageLine: `{{.Exec}} tls ech [--serverName (string)] [--pem] [-i "ECHServerKeys (base64.StdEncoding)"]`,
 	Short:     `Generate TLS-ECH certificates`,
 	Long: `
 Generate TLS-ECH certificates.

 Set serverName to your custom string: {{.Exec}} tls ech --serverName (string)
-Generate into json format: {{.Exec}} tls ech --json
+Generate into pem format: {{.Exec}} tls ech --pem
+Restore ECHConfigs from ECHServerKeys: {{.Exec}} tls ech -i "ECHServerKeys (base64.StdEncoding)"
 `, // Enable PQ signature schemes: {{.Exec}} tls ech --pq-signature-schemes-enabled
 }

@@ -27,43 +28,66 @@ func init() {
 	cmdECH.Run = executeECH
 }

-var input_pqSignatureSchemesEnabled = cmdECH.Flag.Bool("pqSignatureSchemesEnabled", false, "")
+var input_echServerKeys = cmdECH.Flag.String("i", "", "ECHServerKeys (base64.StdEncoding)")
+
+// var input_pqSignatureSchemesEnabled = cmdECH.Flag.Bool("pqSignatureSchemesEnabled", false, "")
 var input_serverName = cmdECH.Flag.String("serverName", "cloudflare-ech.com", "")
-var input_json = cmdECH.Flag.Bool("json", false, "True == turn on json output")
+var input_pem = cmdECH.Flag.Bool("pem", false, "True == turn on pem output")

 func executeECH(cmd *base.Command, args []string) {
-	var kem hpke.KEM
+	var kem uint16

-	if *input_pqSignatureSchemesEnabled {
-		kem = hpke.KEM_X25519_KYBER768_DRAFT00
-	} else {
-		kem = hpke.KEM_X25519_HKDF_SHA256
-	}
+	// if *input_pqSignatureSchemesEnabled {
+	// 	kem = 0x30 // hpke.KEM_X25519_KYBER768_DRAFT00
+	// } else {
+	kem = hpke.DHKEM_X25519_HKDF_SHA256
+	// }

-	echKeySet, err := goech.GenerateECHKeySet(0, *input_serverName, kem)
+	echConfig, priv, err := tls.GenerateECHKeySet(0, *input_serverName, kem)
 	common.Must(err)

-	configBuffer, _ := echKeySet.ECHConfig.MarshalBinary()
-	keyBuffer, _ := echKeySet.MarshalBinary()
-
-	configPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH CONFIGS", Bytes: configBuffer}))
-	keyPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH KEYS", Bytes: keyBuffer}))
-	if *input_json {
-		jECHConfigs := map[string]interface{}{
-			"configs": strings.Split(strings.TrimSpace(string(configPEM)), "\n"),
-		}
-		jECHKey := map[string]interface{}{
-			"key": strings.Split(strings.TrimSpace(string(keyPEM)), "\n"),
-		}
-
-		for _, i := range []map[string]interface{}{jECHConfigs, jECHKey} {
-			content, err := json.MarshalIndent(i, "", "  ")
-			common.Must(err)
-			os.Stdout.Write(content)
-			os.Stdout.WriteString("\n")
-		}
+	var configBuffer, keyBuffer []byte
+	if *input_echServerKeys == "" {
+		configBytes, _ := tls.MarshalBinary(echConfig)
+		var b cryptobyte.Builder
+		b.AddUint16LengthPrefixed(func(child *cryptobyte.Builder) {
+			child.AddBytes(configBytes)
+		})
+		configBuffer, _ = b.Bytes()
+		var b2 cryptobyte.Builder
+		b2.AddUint16(uint16(len(priv)))
+		b2.AddBytes(priv)
+		b2.AddUint16(uint16(len(configBytes)))
+		b2.AddBytes(configBytes)
+		keyBuffer, _ = b2.Bytes()
 	} else {
+		keySetsByte, err := base64.StdEncoding.DecodeString(*input_echServerKeys)
+		if err != nil {
+			os.Stdout.WriteString("Failed to decode ECHServerKeys: " + err.Error() + "\n")
+			return
+		}
+		keyBuffer = keySetsByte
+		KeySets, err := tls.ConvertToGoECHKeys(keySetsByte)
+		if err != nil {
+			os.Stdout.WriteString("Failed to decode ECHServerKeys: " + err.Error() + "\n")
+			return
+		}
+		var b cryptobyte.Builder
+		for _, keySet := range KeySets {
+			b.AddUint16LengthPrefixed(func(child *cryptobyte.Builder) {
+				child.AddBytes(keySet.Config)
+			})
+		}
+		configBuffer, _ = b.Bytes()
+	}
+
+	if *input_pem {
+		configPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH CONFIGS", Bytes: configBuffer}))
+		keyPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH KEYS", Bytes: keyBuffer}))
 		os.Stdout.WriteString(configPEM)
 		os.Stdout.WriteString(keyPEM)
+	} else {
+		os.Stdout.WriteString("ECH config list: \n" + base64.StdEncoding.EncodeToString(configBuffer) + "\n")
+		os.Stdout.WriteString("ECH server keys: \n" + base64.StdEncoding.EncodeToString(keyBuffer) + "\n")
 	}
 }
--- a/proxy/dokodemo/config.pb.go
+++ b/proxy/dokodemo/config.pb.go
@@ -26,8 +26,9 @@ type Config struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

-	Address *net.IPOrDomain `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
-	Port    uint32          `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
+	Address *net.IPOrDomain   `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
+	Port    uint32            `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
+	PortMap map[string]string `protobuf:"bytes,3,rep,name=port_map,json=portMap,proto3" json:"port_map,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// List of networks that the Dokodemo accepts.
 	Networks       []net.Network `protobuf:"varint,7,rep,packed,name=networks,proto3,enum=xray.common.net.Network" json:"networks,omitempty"`
 	FollowRedirect bool          `protobuf:"varint,5,opt,name=follow_redirect,json=followRedirect,proto3" json:"follow_redirect,omitempty"`
@@ -78,6 +79,13 @@ func (x *Config) GetPort() uint32 {
 	return 0
 }

+func (x *Config) GetPortMap() map[string]string {
+	if x != nil {
+		return x.PortMap
+	}
+	return nil
+}
+
 func (x *Config) GetNetworks() []net.Network {
 	if x != nil {
 		return x.Networks
@@ -108,26 +116,34 @@ var file_proxy_dokodemo_config_proto_rawDesc = []byte{
 	0x6d, 0x6f, 0x1a, 0x18, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6e, 0x65, 0x74, 0x2f, 0x61,
 	0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x18, 0x63, 0x6f,
 	0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6e, 0x65, 0x74, 0x2f, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b,
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+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xd2, 0x02, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69,
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+	0x18, 0x02, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x04, 0x70, 0x6f, 0x72, 0x74, 0x12, 0x43, 0x0a, 0x08,
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 }

 var (
@@ -142,20 +158,22 @@ func file_proxy_dokodemo_config_proto_rawDescGZIP() []byte {
 	return file_proxy_dokodemo_config_proto_rawDescData
 }

-var file_proxy_dokodemo_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_proxy_dokodemo_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_proxy_dokodemo_config_proto_goTypes = []any{
 	(*Config)(nil),         // 0: xray.proxy.dokodemo.Config
-	(*net.IPOrDomain)(nil), // 1: xray.common.net.IPOrDomain
-	(net.Network)(0),       // 2: xray.common.net.Network
+	nil,                    // 1: xray.proxy.dokodemo.Config.PortMapEntry
+	(*net.IPOrDomain)(nil), // 2: xray.common.net.IPOrDomain
+	(net.Network)(0),       // 3: xray.common.net.Network
 }
 var file_proxy_dokodemo_config_proto_depIdxs = []int32{
-	1, // 0: xray.proxy.dokodemo.Config.address:type_name -> xray.common.net.IPOrDomain
-	2, // 1: xray.proxy.dokodemo.Config.networks:type_name -> xray.common.net.Network
-	2, // [2:2] is the sub-list for method output_type
-	2, // [2:2] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
+	2, // 0: xray.proxy.dokodemo.Config.address:type_name -> xray.common.net.IPOrDomain
+	1, // 1: xray.proxy.dokodemo.Config.port_map:type_name -> xray.proxy.dokodemo.Config.PortMapEntry
+	3, // 2: xray.proxy.dokodemo.Config.networks:type_name -> xray.common.net.Network
+	3, // [3:3] is the sub-list for method output_type
+	3, // [3:3] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
 }

 func init() { file_proxy_dokodemo_config_proto_init() }
@@ -169,7 +187,7 @@ func file_proxy_dokodemo_config_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proxy_dokodemo_config_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   1,
+			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
--- a/proxy/dokodemo/config.proto
+++ b/proxy/dokodemo/config.proto
@@ -13,6 +13,8 @@ message Config {
  xray.common.net.IPOrDomain address = 1;
  uint32 port = 2;

+  map<string, string> port_map = 3;
+
  // List of networks that the Dokodemo accepts.
  repeated xray.common.net.Network networks = 7;

--- a/proxy/dokodemo/dokodemo.go
+++ b/proxy/dokodemo/dokodemo.go
@@ -3,6 +3,8 @@ package dokodemo
 import (
 	"context"
 	"runtime"
+	"strconv"
+	"strings"
 	"sync/atomic"

 	"github.com/xtls/xray-core/common"
@@ -36,6 +38,7 @@ type DokodemoDoor struct {
 	config        *Config
 	address       net.Address
 	port          net.Port
+	portMap       map[string]string
 	sockopt       *session.Sockopt
 }

@@ -47,6 +50,7 @@ func (d *DokodemoDoor) Init(config *Config, pm policy.Manager, sockopt *session.
 	d.config = config
 	d.address = config.GetPredefinedAddress()
 	d.port = net.Port(config.Port)
+	d.portMap = config.PortMap
 	d.policyManager = pm
 	d.sockopt = sockopt

@@ -73,6 +77,33 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
 		Port:    d.port,
 	}

+	if !d.config.FollowRedirect {
+		host, port, err := net.SplitHostPort(conn.LocalAddr().String())
+		if dest.Address == nil {
+			if err != nil {
+				dest.Address = net.DomainAddress("localhost")
+			} else {
+				if strings.Contains(host, ".") {
+					dest.Address = net.LocalHostIP
+				} else {
+					dest.Address = net.LocalHostIPv6
+				}
+			}
+		}
+		if dest.Port == 0 {
+			dest.Port = net.Port(common.Must2(strconv.Atoi(port)).(int))
+		}
+		if d.portMap != nil && d.portMap[port] != "" {
+			h, p, _ := net.SplitHostPort(d.portMap[port])
+			if len(h) > 0 {
+				dest.Address = net.ParseAddress(h)
+			}
+			if len(p) > 0 {
+				dest.Port = net.Port(common.Must2(strconv.Atoi(p)).(int))
+			}
+		}
+	}
+
 	destinationOverridden := false
 	if d.config.FollowRedirect {
 		outbounds := session.OutboundsFromContext(ctx)
--- a/transport/internet/tcp/dialer.go
+++ b/transport/internet/tcp/dialer.go
@@ -2,6 +2,7 @@ package tcp

 import (
 	"context"
+	gotls "crypto/tls"
 	"slices"
 	"strings"

@@ -15,10 +16,6 @@ import (
 	"github.com/xtls/xray-core/transport/internet/tls"
 )

-func IsFromMitm(str string) bool {
-	return strings.ToLower(str) == "frommitm"
-}
-
 // Dial dials a new TCP connection to the given destination.
 func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (stat.Connection, error) {
 	errors.LogInfo(ctx, "dialing TCP to ", dest)
@@ -30,14 +27,17 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
 	if config := tls.ConfigFromStreamSettings(streamSettings); config != nil {
 		mitmServerName := session.MitmServerNameFromContext(ctx)
 		mitmAlpn11 := session.MitmAlpn11FromContext(ctx)
-		tlsConfig := config.GetTLSConfig(tls.WithDestination(dest))
-		if IsFromMitm(tlsConfig.ServerName) {
-			tlsConfig.ServerName = mitmServerName
+		var tlsConfig *gotls.Config
+		if tls.IsFromMitm(config.ServerName) {
+			tlsConfig = config.GetTLSConfig(tls.WithOverrideName(mitmServerName))
+		} else {
+			tlsConfig = config.GetTLSConfig(tls.WithDestination(dest))
 		}
+
 		isFromMitmVerify := false
 		if r, ok := tlsConfig.Rand.(*tls.RandCarrier); ok && len(r.VerifyPeerCertInNames) > 0 {
 			for i, name := range r.VerifyPeerCertInNames {
-				if IsFromMitm(name) {
+				if tls.IsFromMitm(name) {
 					isFromMitmVerify = true
 					r.VerifyPeerCertInNames[0], r.VerifyPeerCertInNames[i] = r.VerifyPeerCertInNames[i], r.VerifyPeerCertInNames[0]
 					r.VerifyPeerCertInNames = r.VerifyPeerCertInNames[1:]
@@ -56,7 +56,7 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
 				}
 			}
 		}
-		isFromMitmAlpn := len(tlsConfig.NextProtos) == 1 && IsFromMitm(tlsConfig.NextProtos[0])
+		isFromMitmAlpn := len(tlsConfig.NextProtos) == 1 && tls.IsFromMitm(tlsConfig.NextProtos[0])
 		if isFromMitmAlpn {
 			if mitmAlpn11 {
 				tlsConfig.NextProtos[0] = "http/1.1"
--- a/transport/internet/tcp/hub.go
+++ b/transport/internet/tcp/hub.go
@@ -42,6 +42,9 @@ func ListenTCP(ctx context.Context, address net.Address, port net.Port, streamSe
 	var listener net.Listener
 	var err error
 	if port == net.Port(0) { // unix
+		if !address.Family().IsDomain() {
+			return nil, errors.New("invalid unix listen: ", address).AtError()
+		}
 		listener, err = internet.ListenSystem(ctx, &net.UnixAddr{
 			Name: address.Domain(),
 			Net:  "unix",
--- a/transport/internet/tls/config.go
+++ b/transport/internet/tls/config.go
@@ -275,6 +275,9 @@ func getNewGetCertificateFunc(certs []*tls.Certificate, rejectUnknownSNI bool) f
 }

 func (c *Config) parseServerName() string {
+	if IsFromMitm(c.ServerName) {
+		return ""
+	}
 	return c.ServerName
 }

@@ -444,6 +447,16 @@ func (c *Config) GetTLSConfig(opts ...Option) *tls.Config {
 			config.KeyLogWriter = writer
 		}
 	}
+	if len(c.EchConfigList) > 0 || len(c.EchServerKeys) > 0 {
+		err := ApplyECH(c, config)
+		if err != nil {
+			if c.EchForceQuery == "full" {
+				errors.LogError(context.Background(), err)
+			} else {
+				errors.LogInfo(context.Background(), err)
+			}
+		}
+	}

 	return config
 }
@@ -463,6 +476,12 @@ func WithDestination(dest net.Destination) Option {
 	}
 }

+func WithOverrideName(serverName string) Option {
+	return func(config *tls.Config) {
+		config.ServerName = serverName
+	}
+}
+
 // WithNextProto sets the ALPN values in TLS config.
 func WithNextProto(protocol ...string) Option {
 	return func(config *tls.Config) {
@@ -503,3 +522,7 @@ func ParseCurveName(curveNames []string) []tls.CurveID {
 	}
 	return curveIDs
 }
+
+func IsFromMitm(str string) bool {
+	return strings.ToLower(str) == "frommitm"
+}
--- a/transport/internet/tls/config.pb.go
+++ b/transport/internet/tls/config.pb.go
@@ -7,6 +7,7 @@
 package tls

 import (
+	internet "github.com/xtls/xray-core/transport/internet"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -216,7 +217,11 @@ type Config struct {
 	// @Document Replaces server_name to verify the peer cert.
 	// @Document After allow_insecure (automatically), if the server's cert can't be verified by any of these names, pinned_peer_certificate_chain_sha256 will be tried.
 	// @Critical
-	VerifyPeerCertInNames []string `protobuf:"bytes,17,rep,name=verify_peer_cert_in_names,json=verifyPeerCertInNames,proto3" json:"verify_peer_cert_in_names,omitempty"`
+	VerifyPeerCertInNames []string               `protobuf:"bytes,17,rep,name=verify_peer_cert_in_names,json=verifyPeerCertInNames,proto3" json:"verify_peer_cert_in_names,omitempty"`
+	EchServerKeys         []byte                 `protobuf:"bytes,18,opt,name=ech_server_keys,json=echServerKeys,proto3" json:"ech_server_keys,omitempty"`
+	EchConfigList         string                 `protobuf:"bytes,19,opt,name=ech_config_list,json=echConfigList,proto3" json:"ech_config_list,omitempty"`
+	EchForceQuery         string                 `protobuf:"bytes,20,opt,name=ech_force_query,json=echForceQuery,proto3" json:"ech_force_query,omitempty"`
+	EchSocketSettings     *internet.SocketConfig `protobuf:"bytes,21,opt,name=ech_socket_settings,json=echSocketSettings,proto3" json:"ech_socket_settings,omitempty"`
 }

 func (x *Config) Reset() {
@@ -361,6 +366,34 @@ func (x *Config) GetVerifyPeerCertInNames() []string {
 	return nil
 }

+func (x *Config) GetEchServerKeys() []byte {
+	if x != nil {
+		return x.EchServerKeys
+	}
+	return nil
+}
+
+func (x *Config) GetEchConfigList() string {
+	if x != nil {
+		return x.EchConfigList
+	}
+	return ""
+}
+
+func (x *Config) GetEchForceQuery() string {
+	if x != nil {
+		return x.EchForceQuery
+	}
+	return ""
+}
+
+func (x *Config) GetEchSocketSettings() *internet.SocketConfig {
+	if x != nil {
+		return x.EchSocketSettings
+	}
+	return nil
+}
+
 var File_transport_internet_tls_config_proto protoreflect.FileDescriptor

 var file_transport_internet_tls_config_proto_rawDesc = []byte{
@@ -368,81 +401,96 @@ var file_transport_internet_tls_config_proto_rawDesc = []byte{
 	0x72, 0x6e, 0x65, 0x74, 0x2f, 0x74, 0x6c, 0x73, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e,
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+	0x74, 0x18, 0x13, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0d, 0x65, 0x63, 0x68, 0x43, 0x6f, 0x6e, 0x66,
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+	0x74, 0x69, 0x6e, 0x67, 0x73, 0x42, 0x73, 0x0a, 0x1f, 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, 0x2e, 0x74, 0x6c, 0x73, 0x50, 0x01, 0x5a, 0x30, 0x67, 0x69, 0x74, 0x68,
 	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79,
@@ -468,18 +516,20 @@ func file_transport_internet_tls_config_proto_rawDescGZIP() []byte {
 var file_transport_internet_tls_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_transport_internet_tls_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_transport_internet_tls_config_proto_goTypes = []any{
-	(Certificate_Usage)(0), // 0: xray.transport.internet.tls.Certificate.Usage
-	(*Certificate)(nil),    // 1: xray.transport.internet.tls.Certificate
-	(*Config)(nil),         // 2: xray.transport.internet.tls.Config
+	(Certificate_Usage)(0),        // 0: xray.transport.internet.tls.Certificate.Usage
+	(*Certificate)(nil),           // 1: xray.transport.internet.tls.Certificate
+	(*Config)(nil),                // 2: xray.transport.internet.tls.Config
+	(*internet.SocketConfig)(nil), // 3: xray.transport.internet.SocketConfig
 }
 var file_transport_internet_tls_config_proto_depIdxs = []int32{
 	0, // 0: xray.transport.internet.tls.Certificate.usage:type_name -> xray.transport.internet.tls.Certificate.Usage
 	1, // 1: xray.transport.internet.tls.Config.certificate:type_name -> xray.transport.internet.tls.Certificate
-	2, // [2:2] is the sub-list for method output_type
-	2, // [2:2] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
+	3, // 2: xray.transport.internet.tls.Config.ech_socket_settings:type_name -> xray.transport.internet.SocketConfig
+	3, // [3:3] is the sub-list for method output_type
+	3, // [3:3] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
 }

 func init() { file_transport_internet_tls_config_proto_init() }
--- a/transport/internet/tls/config.proto
+++ b/transport/internet/tls/config.proto
@@ -6,6 +6,8 @@ option go_package = "github.com/xtls/xray-core/transport/internet/tls";
 option java_package = "com.xray.transport.internet.tls";
 option java_multiple_files = true;

+import "transport/internet/config.proto";
+
 message Certificate {
  // TLS certificate in x509 format.
  bytes certificate = 1;
@@ -91,4 +93,12 @@ message Config {
     @Critical
  */
  repeated string verify_peer_cert_in_names = 17;
+
+  bytes ech_server_keys = 18;
+
+  string ech_config_list = 19;
+
+  string ech_force_query = 20;
+
+  SocketConfig ech_socket_settings = 21;
 }
--- a/transport/internet/tls/ech.go
+++ b/transport/internet/tls/ech.go
@@ -0,0 +1,430 @@
+package tls
+
+import (
+	"bytes"
+	"context"
+	"crypto/ecdh"
+	"crypto/rand"
+	"crypto/tls"
+	"encoding/base64"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	utls "github.com/refraction-networking/utls"
+	"github.com/xtls/xray-core/common/crypto"
+	dns2 "github.com/xtls/xray-core/features/dns"
+	"golang.org/x/net/http2"
+
+	"github.com/miekg/dns"
+	"github.com/xtls/reality"
+	"github.com/xtls/reality/hpke"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/utils"
+	"github.com/xtls/xray-core/transport/internet"
+	"golang.org/x/crypto/cryptobyte"
+)
+
+func ApplyECH(c *Config, config *tls.Config) error {
+	var ECHConfig []byte
+	var err error
+
+	var nameToQuery string
+	if net.ParseAddress(config.ServerName).Family().IsDomain() {
+		nameToQuery = config.ServerName
+	}
+	var DNSServer string
+
+	// for server
+	if len(c.EchServerKeys) != 0 {
+		KeySets, err := ConvertToGoECHKeys(c.EchServerKeys)
+		if err != nil {
+			return errors.New("Failed to unmarshal ECHKeySetList: ", err)
+		}
+		config.EncryptedClientHelloKeys = KeySets
+	}
+
+	// for client
+	if len(c.EchConfigList) != 0 {
+		ECHForceQuery := c.EchForceQuery
+		switch ECHForceQuery {
+		case "none", "half", "full":
+		case "":
+			ECHForceQuery = "none" // default to none
+		default:
+			panic("Invalid ECHForceQuery: " + c.EchForceQuery)
+		}
+		defer func() {
+			// if failed to get ECHConfig, use an invalid one to make connection fail
+			if err != nil || len(ECHConfig) == 0 {
+				if ECHForceQuery == "full" {
+					ECHConfig = []byte{1, 1, 4, 5, 1, 4}
+				}
+			}
+			config.EncryptedClientHelloConfigList = ECHConfig
+		}()
+		// direct base64 config
+		if strings.Contains(c.EchConfigList, "://") {
+			// query config from dns
+			parts := strings.Split(c.EchConfigList, "+")
+			if len(parts) == 2 {
+				// parse ECH DNS server in format of "example.com+https://1.1.1.1/dns-query"
+				nameToQuery = parts[0]
+				DNSServer = parts[1]
+			} else if len(parts) == 1 {
+				// normal format
+				DNSServer = parts[0]
+			} else {
+				return errors.New("Invalid ECH DNS server format: ", c.EchConfigList)
+			}
+			if nameToQuery == "" {
+				return errors.New("Using DNS for ECH Config needs serverName or use Server format example.com+https://1.1.1.1/dns-query")
+			}
+			ECHConfig, err = QueryRecord(nameToQuery, DNSServer, c.EchForceQuery, c.EchSocketSettings)
+			if err != nil {
+				return errors.New("Failed to query ECH DNS record for domain: ", nameToQuery, " at server: ", DNSServer).Base(err)
+			}
+		} else {
+			ECHConfig, err = base64.StdEncoding.DecodeString(c.EchConfigList)
+			if err != nil {
+				return errors.New("Failed to unmarshal ECHConfigList: ", err)
+			}
+		}
+	}
+
+	return nil
+}
+
+type ECHConfigCache struct {
+	configRecord atomic.Pointer[echConfigRecord]
+	// updateLock is not for preventing concurrent read/write, but for preventing concurrent update
+	UpdateLock sync.Mutex
+}
+
+type echConfigRecord struct {
+	config []byte
+	expire time.Time
+	err    error
+}
+
+var (
+	// The keys for both maps must be generated by ECHCacheKey().
+	GlobalECHConfigCache = utils.NewTypedSyncMap[string, *ECHConfigCache]()
+	clientForECHDOH      = utils.NewTypedSyncMap[string, *http.Client]()
+)
+
+// sockopt can be nil if not specified.
+// if for clientForECHDOH, domain can be empty.
+func ECHCacheKey(server, domain string, sockopt *internet.SocketConfig) string {
+	return server + "|" + domain + "|" + fmt.Sprintf("%p", sockopt)
+}
+
+// Update updates the ECH config for given domain and server.
+// this method is concurrent safe, only one update request will be sent, others get the cache.
+// if isLockedUpdate is true, it will not try to acquire the lock.
+func (c *ECHConfigCache) Update(domain string, server string, isLockedUpdate bool, forceQuery string, sockopt *internet.SocketConfig) ([]byte, error) {
+	if !isLockedUpdate {
+		c.UpdateLock.Lock()
+		defer c.UpdateLock.Unlock()
+	}
+	// Double check cache after acquiring lock
+	configRecord := c.configRecord.Load()
+	if configRecord.expire.After(time.Now()) && configRecord.err == nil {
+		errors.LogDebug(context.Background(), "Cache hit for domain after double check: ", domain)
+		return configRecord.config, configRecord.err
+	}
+	// Query ECH config from DNS server
+	errors.LogDebug(context.Background(), "Trying to query ECH config for domain: ", domain, " with ECH server: ", server)
+	echConfig, ttl, err := dnsQuery(server, domain, sockopt)
+	// if in "full", directly return
+	if err != nil && forceQuery == "full" {
+		return nil, err
+	}
+	if ttl == 0 {
+		ttl = dns2.DefaultTTL
+	}
+	configRecord = &echConfigRecord{
+		config: echConfig,
+		expire: time.Now().Add(time.Duration(ttl) * time.Second),
+		err:    err,
+	}
+	c.configRecord.Store(configRecord)
+	return configRecord.config, configRecord.err
+}
+
+// QueryRecord returns the ECH config for given domain.
+// If the record is not in cache or expired, it will query the DNS server and update the cache.
+func QueryRecord(domain string, server string, forceQuery string, sockopt *internet.SocketConfig) ([]byte, error) {
+	GlobalECHConfigCacheKey := ECHCacheKey(server, domain, sockopt)
+	echConfigCache, ok := GlobalECHConfigCache.Load(GlobalECHConfigCacheKey)
+	if !ok {
+		echConfigCache = &ECHConfigCache{}
+		echConfigCache.configRecord.Store(&echConfigRecord{})
+		echConfigCache, _ = GlobalECHConfigCache.LoadOrStore(GlobalECHConfigCacheKey, echConfigCache)
+	}
+	configRecord := echConfigCache.configRecord.Load()
+	if configRecord.expire.After(time.Now()) && (configRecord.err == nil || forceQuery == "none") {
+		errors.LogDebug(context.Background(), "Cache hit for domain: ", domain)
+		return configRecord.config, configRecord.err
+	}
+
+	// If expire is zero value, it means we are in initial state, wait for the query to finish
+	// otherwise return old value immediately and update in a goroutine
+	// but if the cache is too old, wait for update
+	if configRecord.expire == (time.Time{}) || configRecord.expire.Add(time.Hour*6).Before(time.Now()) {
+		return echConfigCache.Update(domain, server, false, forceQuery, sockopt)
+	} else {
+		// If someone already acquired the lock, it means it is updating, do not start another update goroutine
+		if echConfigCache.UpdateLock.TryLock() {
+			go func() {
+				defer echConfigCache.UpdateLock.Unlock()
+				echConfigCache.Update(domain, server, true, forceQuery, sockopt)
+			}()
+		}
+		return configRecord.config, configRecord.err
+	}
+}
+
+// dnsQuery is the real func for sending type65 query for given domain to given DNS server.
+// return ECH config, TTL and error
+func dnsQuery(server string, domain string, sockopt *internet.SocketConfig) ([]byte, uint32, error) {
+	m := new(dns.Msg)
+	var dnsResolve []byte
+	m.SetQuestion(dns.Fqdn(domain), dns.TypeHTTPS)
+	// for DOH server
+	if strings.HasPrefix(server, "https://") || strings.HasPrefix(server, "h2c://") {
+		h2c := strings.HasPrefix(server, "h2c://")
+		m.SetEdns0(4096, false) // 4096 is the buffer size, false means no DNSSEC
+		padding := &dns.EDNS0_PADDING{Padding: make([]byte, int(crypto.RandBetween(100, 300)))}
+		if opt := m.IsEdns0(); opt != nil {
+			opt.Option = append(opt.Option, padding)
+		}
+		// always 0 in DOH
+		m.Id = 0
+		msg, err := m.Pack()
+		if err != nil {
+			return nil, 0, err
+		}
+		var client *http.Client
+		serverKey := ECHCacheKey(server, "", sockopt)
+		if client, _ = clientForECHDOH.Load(serverKey); client == nil {
+			// All traffic sent by core should via xray's internet.DialSystem
+			// This involves the behavior of some Android VPN GUI clients
+			tr := &http2.Transport{
+				IdleConnTimeout: net.ConnIdleTimeout,
+				ReadIdleTimeout: net.ChromeH2KeepAlivePeriod,
+				DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) {
+					dest, err := net.ParseDestination(network + ":" + addr)
+					if err != nil {
+						return nil, err
+					}
+					var conn net.Conn
+
+					conn, err = internet.DialSystem(ctx, dest, sockopt)
+					if err != nil {
+						return nil, err
+					}
+
+					if !h2c {
+						u, err := url.Parse(server)
+						if err != nil {
+							return nil, err
+						}
+						conn = utls.UClient(conn, &utls.Config{ServerName: u.Hostname()}, utls.HelloChrome_Auto)
+						if err := conn.(*utls.UConn).HandshakeContext(ctx); err != nil {
+							return nil, err
+						}
+					}
+					return conn, nil
+				},
+			}
+			c := &http.Client{
+				Timeout:   5 * time.Second,
+				Transport: tr,
+			}
+			client, _ = clientForECHDOH.LoadOrStore(serverKey, c)
+		}
+		req, err := http.NewRequest("POST", server, bytes.NewReader(msg))
+		if err != nil {
+			return nil, 0, err
+		}
+		req.Header.Set("Accept", "application/dns-message")
+		req.Header.Set("Content-Type", "application/dns-message")
+		req.Header.Set("X-Padding", strings.Repeat("X", int(crypto.RandBetween(100, 1000))))
+		resp, err := client.Do(req)
+		if err != nil {
+			return nil, 0, err
+		}
+		defer resp.Body.Close()
+		respBody, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return nil, 0, err
+		}
+		if resp.StatusCode != http.StatusOK {
+			return nil, 0, errors.New("query failed with response code:", resp.StatusCode)
+		}
+		dnsResolve = respBody
+	} else if strings.HasPrefix(server, "udp://") { // for classic udp dns server
+		udpServerAddr := server[len("udp://"):]
+		// default port 53 if not specified
+		if !strings.Contains(udpServerAddr, ":") {
+			udpServerAddr = udpServerAddr + ":53"
+		}
+		dest, err := net.ParseDestination("udp" + ":" + udpServerAddr)
+		if err != nil {
+			return nil, 0, errors.New("failed to parse udp dns server ", udpServerAddr, " for ECH: ", err)
+		}
+		dnsTimeoutCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		// use xray's internet.DialSystem as mentioned above
+		conn, err := internet.DialSystem(dnsTimeoutCtx, dest, sockopt)
+		if err != nil {
+			return nil, 0, err
+		}
+		defer func() {
+			err := conn.Close()
+			if err != nil {
+				errors.LogDebug(context.Background(), "Failed to close connection: ", err)
+			}
+		}()
+		msg, err := m.Pack()
+		if err != nil {
+			return nil, 0, err
+		}
+		conn.Write(msg)
+		udpResponse := make([]byte, 512)
+		conn.SetReadDeadline(time.Now().Add(5 * time.Second))
+		_, err = conn.Read(udpResponse)
+		if err != nil {
+			return nil, 0, err
+		}
+		dnsResolve = udpResponse
+	}
+	respMsg := new(dns.Msg)
+	err := respMsg.Unpack(dnsResolve)
+	if err != nil {
+		return nil, 0, errors.New("failed to unpack dns response for ECH: ", err)
+	}
+	if len(respMsg.Answer) > 0 {
+		for _, answer := range respMsg.Answer {
+			if https, ok := answer.(*dns.HTTPS); ok && https.Hdr.Name == dns.Fqdn(domain) {
+				for _, v := range https.Value {
+					if echConfig, ok := v.(*dns.SVCBECHConfig); ok {
+						errors.LogDebug(context.Background(), "Get ECH config:", echConfig.String(), " TTL:", respMsg.Answer[0].Header().Ttl)
+						return echConfig.ECH, answer.Header().Ttl, nil
+					}
+				}
+			}
+		}
+	}
+	// empty is valid, means no ECH config found
+	return nil, dns2.DefaultTTL, nil
+}
+
+// reference github.com/OmarTariq612/goech
+func MarshalBinary(ech reality.EchConfig) ([]byte, error) {
+	var b cryptobyte.Builder
+	b.AddUint16(ech.Version)
+	b.AddUint16LengthPrefixed(func(child *cryptobyte.Builder) {
+		child.AddUint8(ech.ConfigID)
+		child.AddUint16(ech.KemID)
+		child.AddUint16(uint16(len(ech.PublicKey)))
+		child.AddBytes(ech.PublicKey)
+		child.AddUint16LengthPrefixed(func(child *cryptobyte.Builder) {
+			for _, cipherSuite := range ech.SymmetricCipherSuite {
+				child.AddUint16(cipherSuite.KDFID)
+				child.AddUint16(cipherSuite.AEADID)
+			}
+		})
+		child.AddUint8(ech.MaxNameLength)
+		child.AddUint8(uint8(len(ech.PublicName)))
+		child.AddBytes(ech.PublicName)
+		child.AddUint16LengthPrefixed(func(child *cryptobyte.Builder) {
+			for _, extention := range ech.Extensions {
+				child.AddUint16(extention.Type)
+				child.AddBytes(extention.Data)
+			}
+		})
+	})
+	return b.Bytes()
+}
+
+var ErrInvalidLen = errors.New("goech: invalid length")
+
+func ConvertToGoECHKeys(data []byte) ([]tls.EncryptedClientHelloKey, error) {
+	var keys []tls.EncryptedClientHelloKey
+	s := cryptobyte.String(data)
+	for !s.Empty() {
+		if len(s) < 2 {
+			return keys, ErrInvalidLen
+		}
+		keyLength := int(binary.BigEndian.Uint16(s[:2]))
+		if len(s) < keyLength+4 {
+			return keys, ErrInvalidLen
+		}
+		configLength := int(binary.BigEndian.Uint16(s[keyLength+2 : keyLength+4]))
+		if len(s) < 2+keyLength+2+configLength {
+			return keys, ErrInvalidLen
+		}
+		child := cryptobyte.String(s[:2+keyLength+2+configLength])
+		var (
+			sk, config cryptobyte.String
+		)
+		if !child.ReadUint16LengthPrefixed(&sk) || !child.ReadUint16LengthPrefixed(&config) || !child.Empty() {
+			return keys, ErrInvalidLen
+		}
+		if !s.Skip(2 + keyLength + 2 + configLength) {
+			return keys, ErrInvalidLen
+		}
+		keys = append(keys, tls.EncryptedClientHelloKey{
+			Config:     config,
+			PrivateKey: sk,
+		})
+	}
+	return keys, nil
+}
+
+const ExtensionEncryptedClientHello = 0xfe0d
+const KDF_HKDF_SHA384 = 0x0002
+const KDF_HKDF_SHA512 = 0x0003
+
+func GenerateECHKeySet(configID uint8, domain string, kem uint16) (reality.EchConfig, []byte, error) {
+	config := reality.EchConfig{
+		Version:    ExtensionEncryptedClientHello,
+		ConfigID:   configID,
+		PublicName: []byte(domain),
+		KemID:      kem,
+		SymmetricCipherSuite: []reality.EchCipher{
+			{KDFID: hpke.KDF_HKDF_SHA256, AEADID: hpke.AEAD_AES_128_GCM},
+			{KDFID: hpke.KDF_HKDF_SHA256, AEADID: hpke.AEAD_AES_256_GCM},
+			{KDFID: hpke.KDF_HKDF_SHA256, AEADID: hpke.AEAD_ChaCha20Poly1305},
+			{KDFID: KDF_HKDF_SHA384, AEADID: hpke.AEAD_AES_128_GCM},
+			{KDFID: KDF_HKDF_SHA384, AEADID: hpke.AEAD_AES_256_GCM},
+			{KDFID: KDF_HKDF_SHA384, AEADID: hpke.AEAD_ChaCha20Poly1305},
+			{KDFID: KDF_HKDF_SHA512, AEADID: hpke.AEAD_AES_128_GCM},
+			{KDFID: KDF_HKDF_SHA512, AEADID: hpke.AEAD_AES_256_GCM},
+			{KDFID: KDF_HKDF_SHA512, AEADID: hpke.AEAD_ChaCha20Poly1305},
+		},
+		MaxNameLength: 0,
+		Extensions:    nil,
+	}
+	// if kem == hpke.DHKEM_X25519_HKDF_SHA256 {
+	curve := ecdh.X25519()
+	priv := make([]byte, 32) //x25519
+	_, err := io.ReadFull(rand.Reader, priv)
+	if err != nil {
+		return config, nil, err
+	}
+	privKey, _ := curve.NewPrivateKey(priv)
+	config.PublicKey = privKey.PublicKey().Bytes()
+	return config, priv, nil
+	// }
+	// TODO: add mlkem768 (former kyber768 draft00). The golang mlkem private key is 64 bytes seed?
+}
--- a/transport/internet/tls/ech_test.go
+++ b/transport/internet/tls/ech_test.go
@@ -0,0 +1,79 @@
+package tls
+
+import (
+	"io"
+	"net/http"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/xtls/xray-core/common"
+)
+
+func TestECHDial(t *testing.T) {
+	config := &Config{
+		ServerName:    "cloudflare.com",
+		EchConfigList: "encryptedsni.com+udp://1.1.1.1",
+	}
+	// test concurrent Dial(to test cache problem)
+	wg := sync.WaitGroup{}
+	for range 10 {
+		wg.Add(1)
+		go func() {
+			TLSConfig := config.GetTLSConfig()
+			TLSConfig.NextProtos = []string{"http/1.1"}
+			client := &http.Client{
+				Transport: &http.Transport{
+					TLSClientConfig: TLSConfig,
+				},
+			}
+			resp, err := client.Get("https://cloudflare.com/cdn-cgi/trace")
+			common.Must(err)
+			defer resp.Body.Close()
+			body, err := io.ReadAll(resp.Body)
+			common.Must(err)
+			if !strings.Contains(string(body), "sni=encrypted") {
+				t.Error("ECH Dial success but SNI is not encrypted")
+			}
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+	// check cache
+	echConfigCache, ok := GlobalECHConfigCache.Load(ECHCacheKey("udp://1.1.1.1", "encryptedsni.com", nil))
+	if !ok {
+		t.Error("ECH config cache not found")
+
+	}
+	ok = echConfigCache.UpdateLock.TryLock()
+	if !ok {
+		t.Error("ECH config cache dead lock detected")
+	}
+	echConfigCache.UpdateLock.Unlock()
+	configRecord := echConfigCache.configRecord.Load()
+	if configRecord == nil {
+		t.Error("ECH config record not found in cache")
+	}
+}
+
+func TestECHDialFail(t *testing.T) {
+	config := &Config{
+		ServerName:    "cloudflare.com",
+		EchConfigList: "udp://127.0.0.1",
+		EchForceQuery: "half",
+	}
+	config.GetTLSConfig()
+	// check cache
+	echConfigCache, ok := GlobalECHConfigCache.Load(ECHCacheKey("udp://127.0.0.1", "cloudflare.com", nil))
+	if !ok {
+		t.Error("ECH config cache not found")
+	}
+	configRecord := echConfigCache.configRecord.Load()
+	if configRecord == nil {
+		t.Error("ECH config record not found in cache")
+		return
+	}
+	if configRecord.err == nil {
+		t.Error("unexpected nil error in ECH config record")
+	}
+}
--- a/transport/internet/tls/tls.go
+++ b/transport/internet/tls/tls.go
@@ -128,12 +128,13 @@ func UClient(c net.Conn, config *tls.Config, fingerprint *utls.ClientHelloID) ne

 func copyConfig(c *tls.Config) *utls.Config {
 	return &utls.Config{
-		Rand:                  c.Rand,
-		RootCAs:               c.RootCAs,
-		ServerName:            c.ServerName,
-		InsecureSkipVerify:    c.InsecureSkipVerify,
-		VerifyPeerCertificate: c.VerifyPeerCertificate,
-		KeyLogWriter:          c.KeyLogWriter,
+		Rand:                           c.Rand,
+		RootCAs:                        c.RootCAs,
+		ServerName:                     c.ServerName,
+		InsecureSkipVerify:             c.InsecureSkipVerify,
+		VerifyPeerCertificate:          c.VerifyPeerCertificate,
+		KeyLogWriter:                   c.KeyLogWriter,
+		EncryptedClientHelloConfigList: c.EncryptedClientHelloConfigList,
 	}
 }
Author	SHA1	Message	Date
RPRX	bd86732f68	v25.8.3 Announcement of NFTs by Project X: https://github.com/XTLS/Xray-core/discussions/3633 Project X NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1 XHTTP: Beyond REALITY: https://github.com/XTLS/Xray-core/discussions/4113 REALITY NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2	2025-08-03 11:09:00 +00:00
风扇滑翔翼	d4f11e6d68	UDS: Check address before listen (#4945 ) Fixes https://github.com/XTLS/Xray-core/issues/4944	2025-08-03 11:02:55 +00:00
风扇滑翔翼	00f3147242	app/proxyman/inbound/inbound.go: Fix ListHandlers() (#4976 ) Fixes https://github.com/XTLS/Xray-core/issues/4956	2025-08-03 11:02:08 +00:00
风扇滑翔翼	7cbf5b004c	TLS ECH client: `echForceQuery` "full" / "half" / "none" (default) (#4973 ) https://github.com/XTLS/Xray-core/pull/4971#issuecomment-3148113203	2025-08-03 10:15:42 +00:00
patterniha	87fff12fd9	Root config: Add `version` config (`min` and `max`) (#4970 ) https://github.com/XTLS/Xray-core/pull/4968#issuecomment-3146592323	2025-08-03 01:06:47 +00:00
patterniha	a02723e63f	TLS ECH client: Use chrome-fingerprint and add padding; Add "h2c" and `echSockopt`; Fix some issues (#4949 ) Completes https://github.com/XTLS/Xray-core/pull/3813	2025-08-02 16:05:00 +00:00
RPRX	146b14ab55	Tunnel inbound: Add `portMap` config (local listening port -> remote specified address/port) Completes https://github.com/XTLS/Xray-core/pull/4968	2025-08-02 14:58:56 +00:00
风扇滑翔翼	b2829219a0	TLS ECH client: Add `echForceQuery` config (#4947 ) https://github.com/XTLS/Xray-core/pull/4947#issuecomment-3124359776	2025-08-01 11:25:15 +00:00
RPRX	116cd70a3a	Dokodemo-door: Add simple `tunnel` config (alias and default values) (#4968 ) dokodemo-door -> tunnel freedom -> direct blackhole -> block https://github.com/XTLS/Xray-core/discussions/4966#discussioncomment-13948546 https://github.com/XTLS/Xray-core/pull/4967#issuecomment-3143951306	2025-08-01 11:20:53 +00:00
yuhan6665	c569f478af	Update readme	2025-07-27 19:02:27 -04:00
RPRX	b6b51c51c8	v25.7.26 Announcement of NFTs by Project X: https://github.com/XTLS/Xray-core/discussions/3633 Project X NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1 XHTTP: Beyond REALITY: https://github.com/XTLS/Xray-core/discussions/4113 REALITY NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2	2025-07-26 09:07:56 +00:00
风扇滑翔翼	fb7a9d8d61	TLS client & server: Support Encrypted Client Hello (ECH) (#3813 ) `b9a72a4a26` --------- Co-authored-by: yuhan6665 <1588741+yuhan6665@users.noreply.github.com>	2025-07-26 08:47:27 +00:00
nobody	3fe02a658a	Commands: Add adu/rmu inbound user management to API (#4943 ) Co-authored-by: nobody <nobody@nowhere.mars>	2025-07-26 08:40:04 +00:00
RPRX	5f93ff6c3a	REALITY config: `mldsa65Seed` and `privateKey` can not be the same value Otherwise the point of using ML-DSA-65 is lost.	2025-07-26 08:36:58 +00:00