v1.3.0

https://t.me/projectXray/243505

common/mux/client.go

@@ -330,7 +330,7 @@ func (m *ClientWorker) handleStatusKeep(meta *FrameMetadata, reader *buf.Buffere
 		return buf.Copy(NewStreamReader(reader), buf.Discard)
 	}
 
-	rr := s.NewReader(reader)
+	rr := s.NewReader(reader, &meta.Target)
 	err := buf.Copy(rr, s.output)
 	if err != nil && buf.IsWriteError(err) {
 		newError("failed to write to downstream. closing session ", s.ID).Base(err).WriteToLog()

common/mux/frame.go

@@ -81,6 +81,9 @@ func (f FrameMetadata) WriteTo(b *buf.Buffer) error {
 		if err := addrParser.WriteAddressPort(b, f.Target.Address, f.Target.Port); err != nil {
 			return err
 		}
+	} else if b.UDP != nil {
+		b.WriteByte(byte(TargetNetworkUDP))
+		addrParser.WriteAddressPort(b, b.UDP.Address, b.UDP.Port)
 	}
 
 	len1 := b.Len()
@@ -119,7 +122,7 @@ func (f *FrameMetadata) UnmarshalFromBuffer(b *buf.Buffer) error {
 	f.Option = bitmask.Byte(b.Byte(3))
 	f.Target.Network = net.Network_Unknown
 
-	if f.SessionStatus == SessionStatusNew {
+	if f.SessionStatus == SessionStatusNew || (f.SessionStatus == SessionStatusKeep && b.Len() != 4) {
 		if b.Len() < 8 {
 			return newError("insufficient buffer: ", b.Len())
 		}

common/mux/reader.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/crypto"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 )
 
@@ -12,13 +13,15 @@ import (
 type PacketReader struct {
 	reader io.Reader
 	eof    bool
+	dest   *net.Destination
 }
 
 // NewPacketReader creates a new PacketReader.
-func NewPacketReader(reader io.Reader) *PacketReader {
+func NewPacketReader(reader io.Reader, dest *net.Destination) *PacketReader {
 	return &PacketReader{
 		reader: reader,
 		eof:    false,
+		dest:   dest,
 	}
 }
 
@@ -43,6 +46,9 @@ func (r *PacketReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
 		return nil, err
 	}
 	r.eof = true
+	if r.dest != nil && r.dest.Network == net.Network_UDP {
+		b.UDP = r.dest
+	}
 	return buf.MultiBuffer{b}, nil
 }
 

common/mux/server.go

@@ -145,7 +145,7 @@ func (w *ServerWorker) handleStatusNew(ctx context.Context, meta *FrameMetadata,
 		return nil
 	}
 
-	rr := s.NewReader(reader)
+	rr := s.NewReader(reader, &meta.Target)
 	if err := buf.Copy(rr, s.output); err != nil {
 		buf.Copy(rr, buf.Discard)
 		common.Interrupt(s.input)
@@ -168,7 +168,7 @@ func (w *ServerWorker) handleStatusKeep(meta *FrameMetadata, reader *buf.Buffere
 		return buf.Copy(NewStreamReader(reader), buf.Discard)
 	}
 
-	rr := s.NewReader(reader)
+	rr := s.NewReader(reader, &meta.Target)
 	err := buf.Copy(rr, s.output)
 
 	if err != nil && buf.IsWriteError(err) {

common/mux/session.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 )
 
@@ -152,9 +153,9 @@ func (s *Session) Close() error {
 }
 
 // NewReader creates a buf.Reader based on the transfer type of this Session.
-func (s *Session) NewReader(reader *buf.BufferedReader) buf.Reader {
+func (s *Session) NewReader(reader *buf.BufferedReader, dest *net.Destination) buf.Reader {
 	if s.transferType == protocol.TransferTypeStream {
 		return NewStreamReader(reader)
 	}
-	return NewPacketReader(reader)
+	return NewPacketReader(reader, dest)
 }

common/mux/writer.go

@@ -63,6 +63,9 @@ func (w *Writer) writeMetaOnly() error {
 
 func writeMetaWithFrame(writer buf.Writer, meta FrameMetadata, data buf.MultiBuffer) error {
 	frame := buf.New()
+	if len(data) == 1 {
+		frame.UDP = data[0].UDP
+	}
 	if err := meta.WriteTo(frame); err != nil {
 		return err
 	}

common/xudp/xudp.go

@@ -0,0 +1,137 @@
+package xudp
+
+import (
+	"io"
+
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/protocol"
+)
+
+var addrParser = protocol.NewAddressParser(
+	protocol.AddressFamilyByte(byte(protocol.AddressTypeIPv4), net.AddressFamilyIPv4),
+	protocol.AddressFamilyByte(byte(protocol.AddressTypeDomain), net.AddressFamilyDomain),
+	protocol.AddressFamilyByte(byte(protocol.AddressTypeIPv6), net.AddressFamilyIPv6),
+	protocol.PortThenAddress(),
+)
+
+func NewPacketWriter(writer buf.Writer, dest net.Destination) *PacketWriter {
+	return &PacketWriter{
+		Writer: writer,
+		Dest:   dest,
+	}
+}
+
+type PacketWriter struct {
+	Writer buf.Writer
+	Dest   net.Destination
+}
+
+func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
+	defer buf.ReleaseMulti(mb)
+	mb2Write := make(buf.MultiBuffer, 0, len(mb))
+	for _, b := range mb {
+		length := b.Len()
+		if length == 0 || length+666 > buf.Size {
+			continue
+		}
+
+		eb := buf.New()
+		eb.Write([]byte{0, 0, 0, 0})
+		if w.Dest.Network == net.Network_UDP {
+			eb.WriteByte(1) // New
+			eb.WriteByte(1) // Opt
+			eb.WriteByte(2) // UDP
+			addrParser.WriteAddressPort(eb, w.Dest.Address, w.Dest.Port)
+			w.Dest.Network = net.Network_Unknown
+		} else {
+			eb.WriteByte(2) // Keep
+			eb.WriteByte(1)
+			if b.UDP != nil {
+				eb.WriteByte(2)
+				addrParser.WriteAddressPort(eb, b.UDP.Address, b.UDP.Port)
+			}
+		}
+		l := eb.Len() - 2
+		eb.SetByte(0, byte(l>>8))
+		eb.SetByte(1, byte(l))
+		eb.WriteByte(byte(length >> 8))
+		eb.WriteByte(byte(length))
+		eb.Write(b.Bytes())
+
+		mb2Write = append(mb2Write, eb)
+	}
+	if mb2Write.IsEmpty() {
+		return nil
+	}
+	return w.Writer.WriteMultiBuffer(mb2Write)
+}
+
+func NewPacketReader(reader io.Reader) *PacketReader {
+	return &PacketReader{
+		Reader: reader,
+		cache:  make([]byte, 2),
+	}
+}
+
+type PacketReader struct {
+	Reader io.Reader
+	cache  []byte
+}
+
+func (r *PacketReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
+	for {
+		if _, err := io.ReadFull(r.Reader, r.cache); err != nil {
+			return nil, err
+		}
+		l := int32(r.cache[0])<<8 | int32(r.cache[1])
+		if l < 4 {
+			return nil, io.EOF
+		}
+		b := buf.New()
+		if _, err := b.ReadFullFrom(r.Reader, l); err != nil {
+			b.Release()
+			return nil, err
+		}
+		discard := false
+		switch b.Byte(2) {
+		case 2:
+			if l != 4 {
+				b.Advance(5)
+				addr, port, err := addrParser.ReadAddressPort(nil, b)
+				if err != nil {
+					b.Release()
+					return nil, err
+				}
+				b.UDP = &net.Destination{
+					Network: net.Network_UDP,
+					Address: addr,
+					Port:    port,
+				}
+			}
+		case 4:
+			discard = true
+		default:
+			b.Release()
+			return nil, io.EOF
+		}
+		if b.Byte(3) == 1 {
+			if _, err := io.ReadFull(r.Reader, r.cache); err != nil {
+				b.Release()
+				return nil, err
+			}
+			length := int32(r.cache[0])<<8 | int32(r.cache[1])
+			if length > 0 {
+				b.Clear()
+				if _, err := b.ReadFullFrom(r.Reader, length); err != nil {
+					b.Release()
+					return nil, err
+				}
+				if !discard {
+					return buf.MultiBuffer{b}, nil
+				}
+			}
+		}
+		b.Release()
+	}
+}

core/config.go

@@ -22,9 +22,13 @@ type ConfigFormat struct {
 // ConfigLoader is a utility to load Xray config from external source.
 type ConfigLoader func(input interface{}) (*Config, error)
 
+// ConfigBuilder is a builder to build core.Config from filenames and formats
+type ConfigBuilder func(files []string, formats []string) (*Config, error)
+
 var (
-	configLoaderByName = make(map[string]*ConfigFormat)
-	configLoaderByExt  = make(map[string]*ConfigFormat)
+	configLoaderByName    = make(map[string]*ConfigFormat)
+	configLoaderByExt     = make(map[string]*ConfigFormat)
+	ConfigBuilderForFiles ConfigBuilder
 )
 
 // RegisterConfigLoader add a new ConfigLoader.
@@ -46,6 +50,21 @@ func RegisterConfigLoader(format *ConfigFormat) error {
 	return nil
 }
 
+func GetFormatByExtension(ext string) string {
+	switch strings.ToLower(ext) {
+	case "pb", "protobuf":
+		return "protobuf"
+	case "yaml", "yml":
+		return "yaml"
+	case "toml":
+		return "toml"
+	case "json":
+		return "json"
+	default:
+		return ""
+	}
+}
+
 func getExtension(filename string) string {
 	idx := strings.LastIndexByte(filename, '.')
 	if idx == -1 {
@@ -54,23 +73,48 @@ func getExtension(filename string) string {
 	return filename[idx+1:]
 }
 
-// LoadConfig loads config with given format from given source.
-// input accepts 2 different types:
-// * []string slice of multiple filename/url(s) to open to read
-// * io.Reader that reads a config content (the original way)
-func LoadConfig(formatName string, filename string, input interface{}) (*Config, error) {
-	ext := getExtension(filename)
-	if len(ext) > 0 {
-		if f, found := configLoaderByExt[ext]; found {
-			return f.Loader(input)
+func getFormat(filename string) string {
+	return GetFormatByExtension(getExtension(filename))
+}
+
+func LoadConfig(formatName string, input interface{}) (*Config, error) {
+	switch v := input.(type) {
+	case cmdarg.Arg:
+
+		formats := make([]string, len(v))
+		hasProtobuf := false
+		for i, file := range v {
+			f := getFormat(file)
+			if f == "" {
+				f = formatName
+			}
+			if f == "protobuf" {
+				hasProtobuf = true
+			}
+			formats[i] = f
+		}
+
+		// only one protobuf config file is allowed
+		if hasProtobuf {
+			if len(v) == 1 {
+				return configLoaderByName["protobuf"].Loader(v)
+			} else {
+				return nil, newError("Only one protobuf config file is allowed").AtWarning()
+			}
+		}
+
+		// to avoid import cycle
+		return ConfigBuilderForFiles(v, formats)
+
+	case io.Reader:
+		if f, found := configLoaderByName[formatName]; found {
+			return f.Loader(v)
+		} else {
+			return nil, newError("Unable to load config in", formatName).AtWarning()
 		}
 	}
 
-	if f, found := configLoaderByName[formatName]; found {
-		return f.Loader(input)
-	}
-
-	return nil, newError("Unable to load config in ", formatName).AtWarning()
+	return nil, newError("Unable to load config").AtWarning()
 }
 
 func loadProtobufConfig(data []byte) (*Config, error) {

core/core.go

@@ -18,7 +18,7 @@ import (
 )
 
 var (
-	version  = "1.2.4"
+	version  = "1.3.0"
 	build    = "Custom"
 	codename = "Xray, Penetrates Everything."
 	intro    = "A unified platform for anti-censorship."

core/functions.go

@@ -25,7 +25,7 @@ func CreateObject(v *Instance, config interface{}) (interface{}, error) {
 //
 // xray:api:stable
 func StartInstance(configFormat string, configBytes []byte) (*Instance, error) {
-	config, err := LoadConfig(configFormat, "", bytes.NewReader(configBytes))
+	config, err := LoadConfig(configFormat, bytes.NewReader(configBytes))
 	if err != nil {
 		return nil, err
 	}

core/xray.go

@@ -2,14 +2,10 @@ package core
 
 import (
 	"context"
+	"os"
 	"reflect"
-	"runtime/debug"
-	"strings"
 	"sync"
 
-	"github.com/golang/protobuf/proto"
-
-	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/features"
@@ -184,32 +180,7 @@ func NewWithContext(ctx context.Context, config *Config) (*Instance, error) {
 }
 
 func initInstanceWithConfig(config *Config, server *Instance) (bool, error) {
-	cone := true
-	v, t := false, false
-	for _, outbound := range config.Outbound {
-		s := strings.ToLower(outbound.ProxySettings.Type)
-		l := len(s)
-		if l >= 16 && s[11:16] == "vless" || l >= 16 && s[11:16] == "vmess" {
-			v = true
-			continue
-		}
-		if l >= 17 && s[11:17] == "trojan" || l >= 22 && s[11:22] == "shadowsocks" {
-			t = true
-			if outbound.SenderSettings != nil {
-				var m proxyman.SenderConfig
-				proto.Unmarshal(outbound.SenderSettings.Value, &m)
-				if m.MultiplexSettings != nil && m.MultiplexSettings.Enabled {
-					cone = false
-					break
-				}
-			}
-		}
-	}
-	if v && !t {
-		cone = false
-	}
-	server.ctx = context.WithValue(server.ctx, "cone", cone)
-	defer debug.FreeOSMemory()
+	server.ctx = context.WithValue(server.ctx, "cone", os.Getenv("XRAY_CONE_DISABLED") != "true")
 
 	if config.Transport != nil {
 		features.PrintDeprecatedFeatureWarning("global transport settings")

infra/conf/serial/builder.go

@@ -0,0 +1,44 @@
+package serial
+
+import (
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/infra/conf"
+	"github.com/xtls/xray-core/main/confloader"
+	"io"
+)
+
+func BuildConfig(files []string, formats []string) (*core.Config, error) {
+
+	cf := &conf.Config{}
+	for i, file := range files {
+		newError("Reading config: ", file).AtInfo().WriteToLog()
+		r, err := confloader.LoadConfig(file)
+		if err != nil {
+			return nil, newError("failed to read config: ", file).Base(err)
+		}
+		c, err := ReaderDecoderByFormat[formats[i]](r)
+		if err != nil {
+			return nil, newError("failed to decode config: ", file).Base(err)
+		}
+		if i == 0 {
+			*cf = *c
+			continue
+		}
+		cf.Override(c, file)
+	}
+	return cf.Build()
+}
+
+type readerDecoder func(io.Reader) (*conf.Config, error)
+
+var (
+	ReaderDecoderByFormat = make(map[string]readerDecoder)
+)
+
+func init() {
+	ReaderDecoderByFormat["json"] = DecodeJSONConfig
+	ReaderDecoderByFormat["yaml"] = DecodeYAMLConfig
+	ReaderDecoderByFormat["toml"] = DecodeTOMLConfig
+
+	core.ConfigBuilderForFiles = BuildConfig
+}

infra/conf/transport_internet.go

@@ -264,6 +264,7 @@ func (c *TLSCertConfig) Build() (*tls.Certificate, error) {
 		return nil, newError("failed to parse certificate").Base(err)
 	}
 	certificate.Certificate = cert
+	certificate.CertificatePath = c.CertFile
 
 	if len(c.KeyFile) > 0 || len(c.KeyStr) > 0 {
 		key, err := readFileOrString(c.KeyFile, c.KeyStr)
@@ -271,6 +272,7 @@ func (c *TLSCertConfig) Build() (*tls.Certificate, error) {
 			return nil, newError("failed to parse key").Base(err)
 		}
 		certificate.Key = key
+		certificate.KeyPath = c.KeyFile
 	}
 
 	switch strings.ToLower(c.Usage) {
@@ -348,6 +350,7 @@ func (c *XTLSCertConfig) Build() (*xtls.Certificate, error) {
 		return nil, newError("failed to parse certificate").Base(err)
 	}
 	certificate.Certificate = cert
+	certificate.CertificatePath = c.CertFile
 
 	if len(c.KeyFile) > 0 || len(c.KeyStr) > 0 {
 		key, err := readFileOrString(c.KeyFile, c.KeyStr)
@@ -355,6 +358,7 @@ func (c *XTLSCertConfig) Build() (*xtls.Certificate, error) {
 			return nil, newError("failed to parse key").Base(err)
 		}
 		certificate.Key = key
+		certificate.KeyPath = c.KeyFile
 	}
 
 	switch strings.ToLower(c.Usage) {

main/run.go

@@ -11,7 +11,6 @@ import (
 	"regexp"
 	"runtime"
 	"runtime/debug"
-	"strings"
 	"syscall"
 
 	"github.com/xtls/xray-core/common/cmdarg"
@@ -158,30 +157,25 @@ func getConfigFilePath() cmdarg.Arg {
 }
 
 func getConfigFormat() string {
-	switch strings.ToLower(*format) {
-	case "pb", "protobuf":
-		return "protobuf"
-	case "yaml", "yml":
-		return "yaml"
-	case "toml":
-		return "toml"
-	default:
-		return "json"
+	f := core.GetFormatByExtension(*format)
+	if f == "" {
+		f = "json"
 	}
+	return f
 }
 
 func startXray() (core.Server, error) {
 	configFiles := getConfigFilePath()
 
-	config, err := core.LoadConfig(getConfigFormat(), configFiles[0], configFiles)
+	//config, err := core.LoadConfig(getConfigFormat(), configFiles[0], configFiles)
 
-	//config, err := core.LoadConfigs(getConfigFormat(), configFiles)
+	c, err := core.LoadConfig(getConfigFormat(), configFiles)
 
 	if err != nil {
 		return nil, newError("failed to load config files: [", configFiles.String(), "]").Base(err)
 	}
 
-	server, err := core.New(config)
+	server, err := core.New(c)
 	if err != nil {
 		return nil, newError("failed to create server").Base(err)
 	}

proxy/shadowsocks/config.go

@@ -7,6 +7,8 @@ import (
 	"crypto/md5"
 	"crypto/sha1"
 	"io"
+	"reflect"
+	"strconv"
 
 	"golang.org/x/crypto/chacha20poly1305"
 	"golang.org/x/crypto/hkdf"
@@ -31,6 +33,31 @@ func (a *MemoryAccount) Equals(another protocol.Account) bool {
 	return false
 }
 
+func (a *MemoryAccount) GetCipherName() string {
+	switch a.Cipher.(type) {
+	case *AesCfb:
+		keyBytes := a.Cipher.(*AesCfb).KeyBytes
+		return "AES_" + strconv.FormatInt(int64(keyBytes*8), 10) + "_CFB"
+	case *ChaCha20:
+		if a.Cipher.(*ChaCha20).IVBytes == 8 {
+			return "CHACHA20"
+		}
+		return "CHACHA20_IETF"
+	case *AEADCipher:
+		switch reflect.ValueOf(a.Cipher.(*AEADCipher).AEADAuthCreator).Pointer() {
+		case reflect.ValueOf(createAesGcm).Pointer():
+			keyBytes := a.Cipher.(*AEADCipher).KeyBytes
+			return "AES_" + strconv.FormatInt(int64(keyBytes*8), 10) + "_GCM"
+		case reflect.ValueOf(createChacha20Poly1305).Pointer():
+			return "CHACHA20_POLY1305"
+		}
+	case *NoneCipher:
+		return "NONE"
+	}
+
+	return ""
+}
+
 func createAesGcm(key []byte) cipher.AEAD {
 	block, err := aes.NewCipher(key)
 	common.Must(err)

proxy/shadowsocks/protocol.go

@@ -54,12 +54,9 @@ func (r *FullReader) Read(p []byte) (n int, err error) {
 }
 
 // ReadTCPSession reads a Shadowsocks TCP session from the given reader, returns its header and remaining parts.
-func ReadTCPSession(users []*protocol.MemoryUser, reader io.Reader) (*protocol.RequestHeader, buf.Reader, error) {
-	user := users[0]
-	account := user.Account.(*MemoryAccount)
+func ReadTCPSession(validator *Validator, reader io.Reader) (*protocol.RequestHeader, buf.Reader, error) {
 
 	hashkdf := hmac.New(sha256.New, []byte("SSBSKDF"))
-	hashkdf.Write(account.Key)
 
 	behaviorSeed := crc32.ChecksumIEEE(hashkdf.Sum(nil))
 
@@ -71,10 +68,20 @@ func ReadTCPSession(users []*protocol.MemoryUser, reader io.Reader) (*protocol.R
 	readSizeRemain := DrainSize
 
 	var r2 buf.Reader
+	buffer := buf.New()
+	defer buffer.Release()
 
-	if len(users) > 1 {
-		buffer := buf.New()
-		defer buffer.Release()
+	var user *protocol.MemoryUser
+	var ivLen int32
+	var err error
+
+	count := validator.Count()
+	if count == 0 {
+		readSizeRemain -= int(buffer.Len())
+		DrainConnN(reader, readSizeRemain)
+		return nil, nil, newError("invalid user")
+	} else if count > 1 {
+		var aead cipher.AEAD
 
 		if _, err := buffer.ReadFullFrom(reader, 50); err != nil {
 			readSizeRemain -= int(buffer.Len())
@@ -83,45 +90,26 @@ func ReadTCPSession(users []*protocol.MemoryUser, reader io.Reader) (*protocol.R
 		}
 
 		bs := buffer.Bytes()
+		user, aead, _, ivLen, err = validator.Get(bs, protocol.RequestCommandTCP)
 
-		var aeadCipher *AEADCipher
-		var ivLen int32
-		subkey := make([]byte, 32)
-		length := make([]byte, 16)
-		var aead cipher.AEAD
-		var err error
-		for _, user = range users {
-			account = user.Account.(*MemoryAccount)
-			aeadCipher = account.Cipher.(*AEADCipher)
-			ivLen = aeadCipher.IVSize()
-			subkey = subkey[:aeadCipher.KeyBytes]
-			hkdfSHA1(account.Key, bs[:ivLen], subkey)
-			aead = aeadCipher.AEADAuthCreator(subkey)
-			_, err = aead.Open(length[:0], length[4:16], bs[ivLen:ivLen+18], nil)
-			if err == nil {
-				reader = &FullReader{reader, bs[ivLen:]}
-				auth := &crypto.AEADAuthenticator{
-					AEAD:           aead,
-					NonceGenerator: crypto.GenerateInitialAEADNonce(),
-				}
-				r2 = crypto.NewAuthenticationReader(auth, &crypto.AEADChunkSizeParser{
-					Auth: auth,
-				}, reader, protocol.TransferTypeStream, nil)
-				break
+		if user != nil {
+			reader = &FullReader{reader, bs[ivLen:]}
+			auth := &crypto.AEADAuthenticator{
+				AEAD:           aead,
+				NonceGenerator: crypto.GenerateInitialAEADNonce(),
 			}
-		}
-		if err != nil {
+			r2 = crypto.NewAuthenticationReader(auth, &crypto.AEADChunkSizeParser{
+				Auth: auth,
+			}, reader, protocol.TransferTypeStream, nil)
+		} else {
 			readSizeRemain -= int(buffer.Len())
 			DrainConnN(reader, readSizeRemain)
 			return nil, nil, newError("failed to match an user").Base(err)
 		}
-	}
-
-	buffer := buf.New()
-	defer buffer.Release()
-
-	if r2 == nil {
-		ivLen := account.Cipher.IVSize()
+	} else {
+		user, ivLen = validator.GetOnlyUser()
+		account := user.Account.(*MemoryAccount)
+		hashkdf.Write(account.Key)
 		var iv []byte
 		if ivLen > 0 {
 			if _, err := buffer.ReadFullFrom(reader, ivLen); err != nil {
@@ -261,40 +249,31 @@ func EncodeUDPPacket(request *protocol.RequestHeader, payload []byte) (*buf.Buff
 	return buffer, nil
 }
 
-func DecodeUDPPacket(users []*protocol.MemoryUser, payload *buf.Buffer) (*protocol.RequestHeader, *buf.Buffer, error) {
+func DecodeUDPPacket(validator *Validator, payload *buf.Buffer) (*protocol.RequestHeader, *buf.Buffer, error) {
+	bs := payload.Bytes()
+	if len(bs) <= 32 {
+		return nil, nil, newError("len(bs) <= 32")
+	}
+
 	var user *protocol.MemoryUser
-	var account *MemoryAccount
 	var err error
 
-	if len(users) > 1 {
-		bs := payload.Bytes()
-		if len(bs) <= 32 {
-			return nil, nil, newError("len(bs) <= 32")
-		}
-
-		var aeadCipher *AEADCipher
-		var ivLen int32
-		subkey := make([]byte, 32)
-		data := make([]byte, 8192)
-		var aead cipher.AEAD
+	count := validator.Count()
+	if count == 0 {
+		return nil, nil, newError("invalid user")
+	} else if count > 1 {
 		var d []byte
-		for _, user = range users {
-			account = user.Account.(*MemoryAccount)
-			aeadCipher = account.Cipher.(*AEADCipher)
-			ivLen = aeadCipher.IVSize()
-			subkey = subkey[:aeadCipher.KeyBytes]
-			hkdfSHA1(account.Key, bs[:ivLen], subkey)
-			aead = aeadCipher.AEADAuthCreator(subkey)
-			d, err = aead.Open(data[:0], data[8180:8192], bs[ivLen:], nil)
-			if err == nil {
-				payload.Clear()
-				payload.Write(d)
-				break
-			}
+		user, _, d, _, err = validator.Get(bs, protocol.RequestCommandUDP)
+
+		if user != nil {
+			payload.Clear()
+			payload.Write(d)
+		} else {
+			return nil, nil, newError("failed to decrypt UDP payload").Base(err)
 		}
 	} else {
-		user = users[0]
-		account = user.Account.(*MemoryAccount)
+		user, _ = validator.GetOnlyUser()
+		account := user.Account.(*MemoryAccount)
 
 		var iv []byte
 		if !account.Cipher.IsAEAD() && account.Cipher.IVSize() > 0 {
@@ -302,12 +281,9 @@ func DecodeUDPPacket(users []*protocol.MemoryUser, payload *buf.Buffer) (*protoc
 			iv = make([]byte, account.Cipher.IVSize())
 			copy(iv, payload.BytesTo(account.Cipher.IVSize()))
 		}
-
-		err = account.Cipher.DecodePacket(account.Key, payload)
-	}
-
-	if err != nil {
-		return nil, nil, newError("failed to decrypt UDP payload").Base(err)
+		if err = account.Cipher.DecodePacket(account.Key, payload); err != nil {
+			return nil, nil, newError("failed to decrypt UDP payload").Base(err)
+		}
 	}
 
 	request := &protocol.RequestHeader{
@@ -341,7 +317,10 @@ func (v *UDPReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
 		buffer.Release()
 		return nil, err
 	}
-	u, payload, err := DecodeUDPPacket([]*protocol.MemoryUser{v.User}, buffer)
+	validator := new(Validator)
+	validator.Add(v.User)
+
+	u, payload, err := DecodeUDPPacket(validator, buffer)
 	if err != nil {
 		buffer.Release()
 		return nil, err

proxy/shadowsocks/protocol_test.go

@@ -38,7 +38,9 @@ func TestUDPEncoding(t *testing.T) {
 	encodedData, err := EncodeUDPPacket(request, data.Bytes())
 	common.Must(err)
 
-	decodedRequest, decodedData, err := DecodeUDPPacket([]*protocol.MemoryUser{request.User}, encodedData)
+	validator := new(Validator)
+	validator.Add(request.User)
+	decodedRequest, decodedData, err := DecodeUDPPacket(validator, encodedData)
 	common.Must(err)
 
 	if r := cmp.Diff(decodedData.Bytes(), data.Bytes()); r != "" {
@@ -117,7 +119,9 @@ func TestTCPRequest(t *testing.T) {
 
 		common.Must(writer.WriteMultiBuffer(buf.MultiBuffer{data}))
 
-		decodedRequest, reader, err := ReadTCPSession([]*protocol.MemoryUser{request.User}, cache)
+		validator := new(Validator)
+		validator.Add(request.User)
+		decodedRequest, reader, err := ReadTCPSession(validator, cache)
 		common.Must(err)
 		if r := cmp.Diff(decodedRequest, request, cmp.Comparer(func(a1, a2 protocol.Account) bool { return a1.Equals(a2) })); r != "" {
 			t.Error("request: ", r)

proxy/shadowsocks/server.go

@@ -22,35 +22,46 @@ import (
 
 type Server struct {
 	config        *ServerConfig
-	users         []*protocol.MemoryUser
+	validator     *Validator
 	policyManager policy.Manager
 	cone          bool
 }
 
 // NewServer create a new Shadowsocks server.
 func NewServer(ctx context.Context, config *ServerConfig) (*Server, error) {
-	if config.Users == nil {
-		return nil, newError("empty users")
+	validator := new(Validator)
+	for _, user := range config.Users {
+		u, err := user.ToMemoryUser()
+		if err != nil {
+			return nil, newError("failed to get shadowsocks user").Base(err).AtError()
+		}
+
+		if err := validator.Add(u); err != nil {
+			return nil, newError("failed to add user").Base(err).AtError()
+		}
 	}
 
 	v := core.MustFromContext(ctx)
 	s := &Server{
 		config:        config,
+		validator:     validator,
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
 		cone:          ctx.Value("cone").(bool),
 	}
 
-	for _, user := range config.Users {
-		u, err := user.ToMemoryUser()
-		if err != nil {
-			return nil, newError("failed to parse user account").Base(err)
-		}
-		s.users = append(s.users, u)
-	}
-
 	return s, nil
 }
 
+// AddUser implements proxy.UserManager.AddUser().
+func (s *Server) AddUser(ctx context.Context, u *protocol.MemoryUser) error {
+	return s.validator.Add(u)
+}
+
+// RemoveUser implements proxy.UserManager.RemoveUser().
+func (s *Server) RemoveUser(ctx context.Context, e string) error {
+	return s.validator.Del(e)
+}
+
 func (s *Server) Network() []net.Network {
 	list := s.config.Network
 	if len(list) == 0 {
@@ -64,13 +75,13 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn internet
 	case net.Network_TCP:
 		return s.handleConnection(ctx, conn, dispatcher)
 	case net.Network_UDP:
-		return s.handlerUDPPayload(ctx, conn, dispatcher)
+		return s.handleUDPPayload(ctx, conn, dispatcher)
 	default:
 		return newError("unknown network: ", network)
 	}
 }
 
-func (s *Server) handlerUDPPayload(ctx context.Context, conn internet.Connection, dispatcher routing.Dispatcher) error {
+func (s *Server) handleUDPPayload(ctx context.Context, conn internet.Connection, dispatcher routing.Dispatcher) error {
 	udpServer := udp.NewDispatcher(dispatcher, func(ctx context.Context, packet *udp_proto.Packet) {
 		request := protocol.RequestHeaderFromContext(ctx)
 		if request == nil {
@@ -102,8 +113,9 @@ func (s *Server) handlerUDPPayload(ctx context.Context, conn internet.Connection
 	if inbound == nil {
 		panic("no inbound metadata")
 	}
-	if len(s.users) == 1 {
-		inbound.User = s.users[0]
+
+	if s.validator.Count() == 1 {
+		inbound.User, _ = s.validator.GetOnlyUser()
 	}
 
 	var dest *net.Destination
@@ -121,9 +133,11 @@ func (s *Server) handlerUDPPayload(ctx context.Context, conn internet.Connection
 			var err error
 
 			if inbound.User != nil {
-				request, data, err = DecodeUDPPacket([]*protocol.MemoryUser{inbound.User}, payload)
+				validator := new(Validator)
+				validator.Add(inbound.User)
+				request, data, err = DecodeUDPPacket(validator, payload)
 			} else {
-				request, data, err = DecodeUDPPacket(s.users, payload)
+				request, data, err = DecodeUDPPacket(s.validator, payload)
 				if err == nil {
 					inbound.User = request.User
 				}
@@ -178,7 +192,7 @@ func (s *Server) handleConnection(ctx context.Context, conn internet.Connection,
 	}
 
 	bufferedReader := buf.BufferedReader{Reader: buf.NewReader(conn)}
-	request, bodyReader, err := ReadTCPSession(s.users, &bufferedReader)
+	request, bodyReader, err := ReadTCPSession(s.validator, &bufferedReader)
 	if err != nil {
 		log.Record(&log.AccessMessage{
 			From:   conn.RemoteAddr(),

proxy/shadowsocks/validator.go

@@ -0,0 +1,113 @@
+package shadowsocks
+
+import (
+	"crypto/cipher"
+	"strings"
+	"sync"
+
+	"github.com/xtls/xray-core/common/protocol"
+)
+
+// Validator stores valid Shadowsocks users.
+type Validator struct {
+	// Considering email's usage here, map + sync.Mutex/RWMutex may have better performance.
+	email sync.Map
+	users sync.Map
+}
+
+// Add a Shadowsocks user, Email must be empty or unique.
+func (v *Validator) Add(u *protocol.MemoryUser) error {
+	account := u.Account.(*MemoryAccount)
+
+	if !account.Cipher.IsAEAD() && v.Count() > 0 {
+		return newError("The cipher do not support Single-port Multi-user")
+	}
+
+	if u.Email != "" {
+		_, loaded := v.email.LoadOrStore(strings.ToLower(u.Email), u)
+		if loaded {
+			return newError("User ", u.Email, " already exists.")
+		}
+	}
+
+	v.users.Store(string(account.Key)+"&"+account.GetCipherName(), u)
+	return nil
+}
+
+// Del a Shadowsocks user with a non-empty Email.
+func (v *Validator) Del(e string) error {
+	if e == "" {
+		return newError("Email must not be empty.")
+	}
+	le := strings.ToLower(e)
+	u, _ := v.email.Load(le)
+	if u == nil {
+		return newError("User ", e, " not found.")
+	}
+	account := u.(*protocol.MemoryUser).Account.(*MemoryAccount)
+	v.email.Delete(le)
+	v.users.Delete(string(account.Key) + "&" + account.GetCipherName())
+	return nil
+}
+
+// Count the number of Shadowsocks users
+func (v *Validator) Count() int {
+	length := 0
+	v.users.Range(func(_, _ interface{}) bool {
+		length++
+
+		return true
+	})
+	return length
+}
+
+// Get a Shadowsocks user and the user's cipher.
+func (v *Validator) Get(bs []byte, command protocol.RequestCommand) (u *protocol.MemoryUser, aead cipher.AEAD, ret []byte, ivLen int32, err error) {
+	var dataSize int
+
+	switch command {
+	case protocol.RequestCommandTCP:
+		dataSize = 16
+	case protocol.RequestCommandUDP:
+		dataSize = 8192
+	}
+
+	var aeadCipher *AEADCipher
+	subkey := make([]byte, 32)
+	data := make([]byte, dataSize)
+
+	v.users.Range(func(key, user interface{}) bool {
+		account := user.(*protocol.MemoryUser).Account.(*MemoryAccount)
+		aeadCipher = account.Cipher.(*AEADCipher)
+		ivLen = aeadCipher.IVSize()
+		subkey = subkey[:aeadCipher.KeyBytes]
+		hkdfSHA1(account.Key, bs[:ivLen], subkey)
+		aead = aeadCipher.AEADAuthCreator(subkey)
+
+		switch command {
+		case protocol.RequestCommandTCP:
+			ret, err = aead.Open(data[:0], data[4:16], bs[ivLen:ivLen+18], nil)
+		case protocol.RequestCommandUDP:
+			ret, err = aead.Open(data[:0], data[8180:8192], bs[ivLen:], nil)
+		}
+
+		if err == nil {
+			u = user.(*protocol.MemoryUser)
+			return false
+		}
+		return true
+	})
+
+	return
+}
+
+// Get the only user without authentication
+func (v *Validator) GetOnlyUser() (u *protocol.MemoryUser, ivLen int32) {
+	v.users.Range(func(_, user interface{}) bool {
+		u = user.(*protocol.MemoryUser)
+		return false
+	})
+	ivLen = u.Account.(*MemoryAccount).Cipher.IVSize()
+
+	return
+}

proxy/vless/outbound/outbound.go

@@ -16,6 +16,7 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/common/xudp"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/stats"
@@ -48,6 +49,7 @@ type Handler struct {
 	serverList    *protocol.ServerList
 	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
+	cone          bool
 }
 
 // New creates a new VLess outbound handler.
@@ -66,6 +68,7 @@ func New(ctx context.Context, config *Config) (*Handler, error) {
 		serverList:    serverList,
 		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
+		cone:          ctx.Value("cone").(bool),
 	}
 
 	return handler, nil
@@ -175,6 +178,12 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 	clientReader := link.Reader // .(*pipe.Reader)
 	clientWriter := link.Writer // .(*pipe.Writer)
 
+	if request.Command == protocol.RequestCommandUDP && h.cone {
+		request.Command = protocol.RequestCommandMux
+		request.Address = net.DomainAddress("v1.mux.cool")
+		request.Port = net.Port(666)
+	}
+
 	postRequest := func() error {
 		defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
 
@@ -185,6 +194,9 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 
 		// default: serverWriter := bufferWriter
 		serverWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons)
+		if request.Command == protocol.RequestCommandMux && request.Port == 666 {
+			serverWriter = xudp.NewPacketWriter(serverWriter, target)
+		}
 		if err := buf.CopyOnceTimeout(clientReader, serverWriter, time.Millisecond*100); err != nil && err != buf.ErrNotTimeoutReader && err != buf.ErrReadTimeout {
 			return err // ...
 		}
@@ -216,6 +228,9 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 
 		// default: serverReader := buf.NewReader(conn)
 		serverReader := encoding.DecodeBodyAddons(conn, request, responseAddons)
+		if request.Command == protocol.RequestCommandMux && request.Port == 666 {
+			serverReader = xudp.NewPacketReader(conn)
+		}
 
 		if rawConn != nil {
 			var counter stats.Counter

proxy/vmess/outbound/outbound.go

@@ -15,6 +15,7 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/common/xudp"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/proxy/vmess"
@@ -28,6 +29,7 @@ type Handler struct {
 	serverList    *protocol.ServerList
 	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
+	cone          bool
 }
 
 // New creates a new VMess outbound handler.
@@ -46,6 +48,7 @@ func New(ctx context.Context, config *Config) (*Handler, error) {
 		serverList:    serverList,
 		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
+		cone:          ctx.Value("cone").(bool),
 	}
 
 	return handler, nil
@@ -122,6 +125,12 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 	ctx, cancel := context.WithCancel(ctx)
 	timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
 
+	if request.Command == protocol.RequestCommandUDP && h.cone {
+		request.Command = protocol.RequestCommandMux
+		request.Address = net.DomainAddress("v1.mux.cool")
+		request.Port = net.Port(666)
+	}
+
 	requestDone := func() error {
 		defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
 
@@ -131,6 +140,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		}
 
 		bodyWriter := session.EncodeRequestBody(request, writer)
+		bodyWriter2 := bodyWriter
+		if request.Command == protocol.RequestCommandMux && request.Port == 666 {
+			bodyWriter = xudp.NewPacketWriter(bodyWriter, target)
+		}
 		if err := buf.CopyOnceTimeout(input, bodyWriter, time.Millisecond*100); err != nil && err != buf.ErrNotTimeoutReader && err != buf.ErrReadTimeout {
 			return newError("failed to write first payload").Base(err)
 		}
@@ -144,7 +157,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		}
 
 		if request.Option.Has(protocol.RequestOptionChunkStream) {
-			if err := bodyWriter.WriteMultiBuffer(buf.MultiBuffer{}); err != nil {
+			if err := bodyWriter2.WriteMultiBuffer(buf.MultiBuffer{}); err != nil {
 				return err
 			}
 		}
@@ -163,6 +176,9 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		h.handleCommand(rec.Destination(), header.Command)
 
 		bodyReader := session.DecodeResponseBody(request, reader)
+		if request.Command == protocol.RequestCommandMux && request.Port == 666 {
+			bodyReader = xudp.NewPacketReader(&buf.BufferedReader{Reader: bodyReader})
+		}
 
 		return buf.Copy(bodyReader, output, buf.UpdateActivity(timer))
 	}

transport/internet/tls/config.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/ocsp"
+	"github.com/xtls/xray-core/common/platform/filesystem"
 	"github.com/xtls/xray-core/common/protocol/tls/cert"
 	"github.com/xtls/xray-core/transport/internet"
 )
@@ -60,17 +61,47 @@ func (c *Config) BuildCertificates() []*tls.Certificate {
 		}
 		certs = append(certs, &keyPair)
 		if entry.OcspStapling != 0 {
-			go func(cert *tls.Certificate) {
+			index := len(certs) - 1
+			go func(cert *tls.Certificate, index int) {
 				t := time.NewTicker(time.Duration(entry.OcspStapling) * time.Second)
 				for {
-					if newData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
-						newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
-					} else if string(newData) != string(cert.OCSPStaple) {
-						cert.OCSPStaple = newData
+					if entry.CertificatePath != "" && entry.KeyPath != "" {
+						newCert, err := filesystem.ReadFile(entry.CertificatePath)
+						if err != nil {
+							newError("failed to parse certificate").Base(err).AtError().WriteToLog()
+							<-t.C
+							continue
+						}
+						newKey, err := filesystem.ReadFile(entry.KeyPath)
+						if err != nil {
+							newError("failed to parse key").Base(err).AtError().WriteToLog()
+							<-t.C
+							continue
+						}
+						if string(newCert) != string(entry.Certificate) && string(newKey) != string(entry.Key) {
+							newKeyPair, err := tls.X509KeyPair(newCert, newKey)
+							if err != nil {
+								newError("ignoring invalid X509 key pair").Base(err).AtError().WriteToLog()
+								<-t.C
+								continue
+							}
+							if newKeyPair.Leaf, err = x509.ParseCertificate(newKeyPair.Certificate[0]); err != nil {
+								newError("ignoring invalid certificate").Base(err).AtError().WriteToLog()
+								<-t.C
+								continue
+							}
+							cert = &newKeyPair
+						}
 					}
+					if newOCSPData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
+						newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
+					} else if string(newOCSPData) != string(cert.OCSPStaple) {
+						cert.OCSPStaple = newOCSPData
+					}
+					certs[index] = cert
 					<-t.C
 				}
-			}(certs[len(certs)-1])
+			}(certs[len(certs)-1], index)
 		}
 	}
 	return certs

transport/internet/tls/config.pb.go

@@ -85,6 +85,10 @@ type Certificate struct {
 	Key          []byte            `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Usage        Certificate_Usage `protobuf:"varint,3,opt,name=usage,proto3,enum=xray.transport.internet.tls.Certificate_Usage" json:"usage,omitempty"`
 	OcspStapling int64             `protobuf:"varint,4,opt,name=ocsp_stapling,json=ocspStapling,proto3" json:"ocsp_stapling,omitempty"`
+	// TLS certificate path
+	CertificatePath string `protobuf:"bytes,5,opt,name=certificate_path,json=certificatePath,proto3" json:"certificate_path,omitempty"`
+	// TLS Key path
+	KeyPath string `protobuf:"bytes,6,opt,name=key_path,json=keyPath,proto3" json:"key_path,omitempty"`
 }
 
 func (x *Certificate) Reset() {
@@ -147,6 +151,20 @@ func (x *Certificate) GetOcspStapling() int64 {
 	return 0
 }
 
+func (x *Certificate) GetCertificatePath() string {
+	if x != nil {
+		return x.CertificatePath
+	}
+	return ""
+}
+
+func (x *Certificate) GetKeyPath() string {
+	if x != nil {
+		return x.KeyPath
+	}
+	return ""
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -284,7 +302,7 @@ 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,
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x1b, 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, 0x22, 0xf2, 0x01, 0x0a, 0x0b, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61,
+	0x6c, 0x73, 0x22, 0xb8, 0x02, 0x0a, 0x0b, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61,
 	0x74, 0x65, 0x12, 0x20, 0x0a, 0x0b, 0x63, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74,
 	0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x0b, 0x63, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69,
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@@ -295,48 +313,52 @@ var file_transport_internet_tls_config_proto_rawDesc = []byte{
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 }
 
 var (

transport/internet/tls/config.proto

@@ -22,6 +22,12 @@ message Certificate {
   Usage usage = 3;
 
   int64 ocsp_stapling = 4;
+
+  // TLS certificate path
+  string certificate_path = 5;
+
+  // TLS Key path
+  string key_path = 6;
 }
 
 message Config {

transport/internet/xtls/config.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/ocsp"
+	"github.com/xtls/xray-core/common/platform/filesystem"
 	"github.com/xtls/xray-core/common/protocol/tls/cert"
 	"github.com/xtls/xray-core/transport/internet"
 )
@@ -59,17 +60,47 @@ func (c *Config) BuildCertificates() []*xtls.Certificate {
 		}
 		certs = append(certs, &keyPair)
 		if entry.OcspStapling != 0 {
-			go func(cert *xtls.Certificate) {
+			index := len(certs) - 1
+			go func(cert *xtls.Certificate, index int) {
 				t := time.NewTicker(time.Duration(entry.OcspStapling) * time.Second)
 				for {
-					if newData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
-						newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
-					} else if string(newData) != string(cert.OCSPStaple) {
-						cert.OCSPStaple = newData
+					if entry.CertificatePath != "" && entry.KeyPath != "" {
+						newCert, err := filesystem.ReadFile(entry.CertificatePath)
+						if err != nil {
+							newError("failed to parse certificate").Base(err).AtError().WriteToLog()
+							<-t.C
+							continue
+						}
+						newKey, err := filesystem.ReadFile(entry.KeyPath)
+						if err != nil {
+							newError("failed to parse key").Base(err).AtError().WriteToLog()
+							<-t.C
+							continue
+						}
+						if string(newCert) != string(entry.Certificate) && string(newKey) != string(entry.Key) {
+							newKeyPair, err := xtls.X509KeyPair(newCert, newKey)
+							if err != nil {
+								newError("ignoring invalid X509 key pair").Base(err).AtError().WriteToLog()
+								<-t.C
+								continue
+							}
+							if newKeyPair.Leaf, err = x509.ParseCertificate(newKeyPair.Certificate[0]); err != nil {
+								newError("ignoring invalid certificate").Base(err).AtError().WriteToLog()
+								<-t.C
+								continue
+							}
+							cert = &newKeyPair
+						}
 					}
+					if newOCSPData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
+						newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
+					} else if string(newOCSPData) != string(cert.OCSPStaple) {
+						cert.OCSPStaple = newOCSPData
+					}
+					certs[index] = cert
 					<-t.C
 				}
-			}(certs[len(certs)-1])
+			}(certs[len(certs)-1], index)
 		}
 	}
 	return certs

transport/internet/xtls/config.pb.go

@@ -85,6 +85,10 @@ type Certificate struct {
 	Key          []byte            `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Usage        Certificate_Usage `protobuf:"varint,3,opt,name=usage,proto3,enum=xray.transport.internet.xtls.Certificate_Usage" json:"usage,omitempty"`
 	OcspStapling int64             `protobuf:"varint,4,opt,name=ocsp_stapling,json=ocspStapling,proto3" json:"ocsp_stapling,omitempty"`
+	// TLS certificate path
+	CertificatePath string `protobuf:"bytes,5,opt,name=certificate_path,json=certificatePath,proto3" json:"certificate_path,omitempty"`
+	// TLS Key path
+	KeyPath string `protobuf:"bytes,6,opt,name=key_path,json=keyPath,proto3" json:"key_path,omitempty"`
 }
 
 func (x *Certificate) Reset() {
@@ -147,6 +151,20 @@ func (x *Certificate) GetOcspStapling() int64 {
 	return 0
 }
 
+func (x *Certificate) GetCertificatePath() string {
+	if x != nil {
+		return x.CertificatePath
+	}
+	return ""
+}
+
+func (x *Certificate) GetKeyPath() string {
+	if x != nil {
+		return x.KeyPath
+	}
+	return ""
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -284,7 +302,7 @@ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
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@@ -295,49 +313,53 @@ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
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 }
 
 var (

transport/internet/xtls/config.proto

@@ -22,6 +22,12 @@ message Certificate {
   Usage usage = 3;
 
   int64 ocsp_stapling = 4;
+
+  // TLS certificate path
+  string certificate_path = 5;
+
+  // TLS Key path
+  string key_path = 6;
 }
 
 message Config {