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refactor: Move vision implementation to a new package

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This commit is contained in:
gVisor bot 2023-05-26 20:11:06 +08:00
parent 57883b4927
commit 7d83127347
6 changed files with 362 additions and 300 deletions
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301
transport/vless/conn.go
View file

@ -1,25 +1,18 @@
package vless
import (
"bytes"
"crypto/subtle"
gotls "crypto/tls"
"encoding/binary"
"errors"
"fmt"
"io"
"net"
"reflect"
"sync"
"unsafe"
"github.com/Dreamacro/clash/common/buf"
N "github.com/Dreamacro/clash/common/net"
tlsC "github.com/Dreamacro/clash/component/tls"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/transport/vless/vision"
"github.com/gofrs/uuid/v5"
utls "github.com/sagernet/utls"
xtls "github.com/xtls/go"
"google.golang.org/protobuf/proto"
)
@ -36,33 +29,10 @@ type Conn struct {
handshakeMutex sync.Mutex
needHandshake bool
err error
tlsConn net.Conn
input *bytes.Reader
rawInput *bytes.Buffer
packetsToFilter int
isTLS bool
isTLS12orAbove bool
enableXTLS bool
cipher uint16
remainingServerHello uint16
readRemainingContent int
readRemainingPadding int
readProcess bool
readFilterUUID bool
readLastCommand byte
writeFilterApplicationData bool
writeDirect bool
}
func (vc *Conn) Read(b []byte) (int, error) {
if vc.received {
if vc.readProcess {
buffer := buf.With(b)
err := vc.ReadBuffer(buffer)
return buffer.Len(), err
}
return vc.ExtendedReader.Read(b)
}
@ -70,106 +40,11 @@ func (vc *Conn) Read(b []byte) (int, error) {
return 0, err
}
vc.received = true
return vc.Read(b)
return vc.ExtendedReader.Read(b)
}
func (vc *Conn) ReadBuffer(buffer *buf.Buffer) error {
if vc.received {
toRead := buffer.FreeBytes()
if vc.readRemainingContent > 0 {
if vc.readRemainingContent < buffer.FreeLen() {
toRead = toRead[:vc.readRemainingContent]
}
n, err := vc.ExtendedReader.Read(toRead)
buffer.Truncate(n)
vc.readRemainingContent -= n
vc.FilterTLS(toRead)
return err
}
if vc.readRemainingPadding > 0 {
_, err := io.CopyN(io.Discard, vc.ExtendedReader, int64(vc.readRemainingPadding))
if err != nil {
return err
}
vc.readRemainingPadding = 0
}
if vc.readProcess {
switch vc.readLastCommand {
case commandPaddingContinue:
//if vc.isTLS || vc.packetsToFilter > 0 {
headerUUIDLen := 0
if vc.readFilterUUID {
headerUUIDLen = uuid.Size
}
var header []byte
if need := headerUUIDLen + paddingHeaderLen; buffer.FreeLen() < need {
header = make([]byte, need)
} else {
header = buffer.FreeBytes()[:need]
}
_, err := io.ReadFull(vc.ExtendedReader, header)
if err != nil {
return err
}
pos := 0
if vc.readFilterUUID {
vc.readFilterUUID = false
pos = uuid.Size
if subtle.ConstantTimeCompare(vc.id.Bytes(), header[:uuid.Size]) != 1 {
err = fmt.Errorf("XTLS Vision server responded unknown UUID: %s",
uuid.FromBytesOrNil(header[:uuid.Size]).String())
log.Errorln(err.Error())
return err
}
}
vc.readLastCommand = header[pos]
vc.readRemainingContent = int(binary.BigEndian.Uint16(header[pos+1:]))
vc.readRemainingPadding = int(binary.BigEndian.Uint16(header[pos+3:]))
log.Debugln("XTLS Vision read padding: command=%d, payloadLen=%d, paddingLen=%d",
vc.readLastCommand, vc.readRemainingContent, vc.readRemainingPadding)
return vc.ReadBuffer(buffer)
//}
case commandPaddingEnd:
vc.readProcess = false
return vc.ReadBuffer(buffer)
case commandPaddingDirect:
needReturn := false
if vc.input != nil {
_, err := buffer.ReadFrom(vc.input)
if err != nil {
return err
}
if vc.input.Len() == 0 {
needReturn = true
vc.input = nil
} else { // buffer is full
return nil
}
}
if vc.rawInput != nil {
_, err := buffer.ReadFrom(vc.rawInput)
if err != nil {
return err
}
needReturn = true
if vc.rawInput.Len() == 0 {
vc.rawInput = nil
}
}
if vc.input == nil && vc.rawInput == nil {
vc.readProcess = false
vc.ExtendedReader = N.NewExtendedReader(vc.Conn)
log.Debugln("XTLS Vision direct read start")
}
if needReturn {
return nil
}
default:
err := fmt.Errorf("XTLS Vision read unknown command: %d", vc.readLastCommand)
log.Debugln(err.Error())
return err
}
}
return vc.ExtendedReader.ReadBuffer(buffer)
}
@ -177,7 +52,7 @@ func (vc *Conn) ReadBuffer(buffer *buf.Buffer) error {
return err
}
vc.received = true
return vc.ReadBuffer(buffer)
return vc.ExtendedReader.ReadBuffer(buffer)
}
func (vc *Conn) Write(p []byte) (int, error) {
@ -200,18 +75,6 @@ func (vc *Conn) Write(p []byte) (int, error) {
vc.handshakeMutex.Unlock()
}
if vc.writeFilterApplicationData {
_buffer := buf.StackNew()
defer buf.KeepAlive(_buffer)
buffer := buf.Dup(_buffer)
defer buffer.Release()
buffer.Write(p)
err := vc.WriteBuffer(buffer)
if err != nil {
return 0, err
}
return len(p), nil
}
return vc.ExtendedWriter.Write(p)
}
@ -232,63 +95,6 @@ func (vc *Conn) WriteBuffer(buffer *buf.Buffer) error {
vc.handshakeMutex.Unlock()
}
if vc.writeFilterApplicationData {
buffer2 := ReshapeBuffer(buffer)
defer buffer2.Release()
vc.FilterTLS(buffer.Bytes())
command := commandPaddingContinue
if !vc.isTLS {
command = commandPaddingEnd
// disable XTLS
//vc.readProcess = false
vc.writeFilterApplicationData = false
vc.packetsToFilter = 0
} else if buffer.Len() > 6 && bytes.Equal(buffer.To(3), tlsApplicationDataStart) || vc.packetsToFilter <= 0 {
command = commandPaddingEnd
if vc.enableXTLS {
command = commandPaddingDirect
vc.writeDirect = true
}
vc.writeFilterApplicationData = false
}
ApplyPadding(buffer, command, nil, vc.isTLS)
err := vc.ExtendedWriter.WriteBuffer(buffer)
if err != nil {
return err
}
if vc.writeDirect {
vc.ExtendedWriter = N.NewExtendedWriter(vc.Conn)
log.Debugln("XTLS Vision direct write start")
//time.Sleep(5 * time.Millisecond)
}
if buffer2 != nil {
if vc.writeDirect || !vc.isTLS {
return vc.ExtendedWriter.WriteBuffer(buffer2)
}
vc.FilterTLS(buffer2.Bytes())
command = commandPaddingContinue
if buffer2.Len() > 6 && bytes.Equal(buffer2.To(3), tlsApplicationDataStart) || vc.packetsToFilter <= 0 {
command = commandPaddingEnd
if vc.enableXTLS {
command = commandPaddingDirect
vc.writeDirect = true
}
vc.writeFilterApplicationData = false
}
ApplyPadding(buffer2, command, nil, vc.isTLS)
err = vc.ExtendedWriter.WriteBuffer(buffer2)
if vc.writeDirect {
vc.ExtendedWriter = N.NewExtendedWriter(vc.Conn)
log.Debugln("XTLS Vision direct write start")
//time.Sleep(10 * time.Millisecond)
}
}
return err
}
/*if vc.writeDirect {
log.Debugln("XTLS Vision Direct write, payloadLen=%d", buffer.Len())
}*/
return vc.ExtendedWriter.WriteBuffer(buffer)
}
@ -300,10 +106,9 @@ func (vc *Conn) sendRequest(p []byte) bool {
return true
}
}
isVision := vc.IsXTLSVisionEnabled()
var buffer *buf.Buffer
if isVision {
if vc.IsXTLSVisionEnabled() {
_buffer := buf.StackNew()
defer buf.KeepAlive(_buffer)
buffer = buf.Dup(_buffer)
@ -350,50 +155,14 @@ func (vc *Conn) sendRequest(p []byte) bool {
)
}
if isVision && !vc.dst.UDP && !vc.dst.Mux {
if len(p) == 0 {
WriteWithPadding(buffer, nil, commandPaddingContinue, vc.id, vc.isTLS)
} else {
vc.FilterTLS(p)
//if vc.isTLS {
WriteWithPadding(buffer, p, commandPaddingContinue, vc.id, vc.isTLS)
//} else {
// buf.Must(buf.Error(buffer.Write(p)))
//
// // disable XTLS
// vc.readProcess = false
// vc.writeFilterApplicationData = false
// vc.packetsToFilter = 0
//}
}
} else {
buf.Must(buf.Error(buffer.Write(p)))
}
_, vc.err = vc.ExtendedWriter.Write(buffer.Bytes())
if vc.err != nil {
return true
}
if isVision {
switch underlying := vc.tlsConn.(type) {
case *gotls.Conn:
if underlying.ConnectionState().Version != gotls.VersionTLS13 {
vc.err = ErrNotTLS13
}
case *utls.UConn:
if underlying.ConnectionState().Version != utls.VersionTLS13 {
vc.err = ErrNotTLS13
}
default:
vc.err = fmt.Errorf(`failed to use %s, maybe "security" is not "tls" or "utls"`, vc.addons.Flow)
}
vc.tlsConn = nil
}
return true
}
func (vc *Conn) recvResponse() error {
var buffer [1]byte
var buffer [2]byte
_, vc.err = io.ReadFull(vc.ExtendedReader, buffer[:])
if vc.err != nil {
return vc.err
@ -403,12 +172,7 @@ func (vc *Conn) recvResponse() error {
return errors.New("unexpected response version")
}
_, vc.err = io.ReadFull(vc.ExtendedReader, buffer[:])
if vc.err != nil {
return vc.err
}
length := int64(buffer[0])
length := int64(buffer[1])
if length != 0 { // addon data length > 0
io.CopyN(io.Discard, vc.ExtendedReader, length) // just discard
}
@ -416,18 +180,8 @@ func (vc *Conn) recvResponse() error {
return nil
}
func (vc *Conn) FrontHeadroom() int {
if vc.IsXTLSVisionEnabled() {
return paddingHeaderLen
}
return 0
}
func (vc *Conn) Upstream() any {
if vc.tlsConn == nil {
return vc.Conn
}
return vc.tlsConn
}
func (vc *Conn) NeedHandshake() bool {
@ -439,7 +193,7 @@ func (vc *Conn) IsXTLSVisionEnabled() bool {
}
// newConn return a Conn instance
func newConn(conn net.Conn, client *Client, dst *DstAddr) (*Conn, error) {
func newConn(conn net.Conn, client *Client, dst *DstAddr) (net.Conn, error) {
c := &Conn{
ExtendedReader: N.NewExtendedReader(conn),
ExtendedWriter: N.NewExtendedWriter(conn),
@ -468,43 +222,12 @@ func newConn(conn net.Conn, client *Client, dst *DstAddr) (*Conn, error) {
return nil, fmt.Errorf("failed to use %s, maybe \"security\" is not \"xtls\"", client.Addons.Flow)
}
case XRV:
c.packetsToFilter = 6
c.readProcess = true
c.readFilterUUID = true
c.writeFilterApplicationData = true
c.addons = client.Addons
var t reflect.Type
var p unsafe.Pointer
switch underlying := conn.(type) {
case *gotls.Conn:
//log.Debugln("type tls")
c.Conn = underlying.NetConn()
c.tlsConn = underlying
t = reflect.TypeOf(underlying).Elem()
p = unsafe.Pointer(underlying)
case *utls.UConn:
//log.Debugln("type *utls.UConn")
c.Conn = underlying.NetConn()
c.tlsConn = underlying
t = reflect.TypeOf(underlying.Conn).Elem()
p = unsafe.Pointer(underlying.Conn)
case *tlsC.UConn:
//log.Debugln("type *tlsC.UConn")
c.Conn = underlying.NetConn()
c.tlsConn = underlying.UConn
t = reflect.TypeOf(underlying.Conn).Elem()
//log.Debugln("t:%v", t)
p = unsafe.Pointer(underlying.Conn)
default:
return nil, fmt.Errorf(`failed to use %s, maybe "security" is not "tls" or "utls"`, client.Addons.Flow)
visionConn, err := vision.NewConn(c, c.id)
if err != nil {
return nil, err
}
i, _ := t.FieldByName("input")
r, _ := t.FieldByName("rawInput")
c.input = (*bytes.Reader)(unsafe.Add(p, i.Offset))
c.rawInput = (*bytes.Buffer)(unsafe.Add(p, r.Offset))
//if _, ok := c.Conn.(*net.TCPConn); !ok {
// log.Debugln("XTLS underlying conn is not *net.TCPConn, got %T", c.Conn)
//}
c.addons = client.Addons
return visionConn, nil
}
}

274
transport/vless/vision/conn.go Normal file
View file

@ -0,0 +1,274 @@
package vision
import (
"bytes"
"crypto/subtle"
gotls "crypto/tls"
"encoding/binary"
"fmt"
"io"
"net"
"github.com/Dreamacro/clash/common/buf"
N "github.com/Dreamacro/clash/common/net"
"github.com/Dreamacro/clash/log"
"github.com/gofrs/uuid/v5"
utls "github.com/sagernet/utls"
)
var (
_ N.ExtendedConn = (*Conn)(nil)
)
type Conn struct {
net.Conn
N.ExtendedReader
N.ExtendedWriter
upstream net.Conn
userUUID *uuid.UUID
tlsConn net.Conn
input *bytes.Reader
rawInput *bytes.Buffer
needHandshake bool
packetsToFilter int
isTLS bool
isTLS12orAbove bool
enableXTLS bool
cipher uint16
remainingServerHello uint16
readRemainingContent int
readRemainingPadding int
readProcess bool
readFilterUUID bool
readLastCommand byte
writeFilterApplicationData bool
writeDirect bool
}
func (vc *Conn) Read(b []byte) (int, error) {
if vc.readProcess {
buffer := buf.With(b)
err := vc.ReadBuffer(buffer)
return buffer.Len(), err
}
return vc.ExtendedReader.Read(b)
}
func (vc *Conn) ReadBuffer(buffer *buf.Buffer) error {
toRead := buffer.FreeBytes()
if vc.readRemainingContent > 0 {
if vc.readRemainingContent < buffer.FreeLen() {
toRead = toRead[:vc.readRemainingContent]
}
n, err := vc.ExtendedReader.Read(toRead)
buffer.Truncate(n)
vc.readRemainingContent -= n
vc.FilterTLS(toRead)
return err
}
if vc.readRemainingPadding > 0 {
_, err := io.CopyN(io.Discard, vc.ExtendedReader, int64(vc.readRemainingPadding))
if err != nil {
return err
}
vc.readRemainingPadding = 0
}
if vc.readProcess {
switch vc.readLastCommand {
case commandPaddingContinue:
//if vc.isTLS || vc.packetsToFilter > 0 {
headerUUIDLen := 0
if vc.readFilterUUID {
headerUUIDLen = uuid.Size
}
var header []byte
if need := headerUUIDLen + PaddingHeaderLen - uuid.Size; buffer.FreeLen() < need {
header = make([]byte, need)
} else {
header = buffer.FreeBytes()[:need]
}
_, err := io.ReadFull(vc.ExtendedReader, header)
if err != nil {
return err
}
if vc.readFilterUUID {
vc.readFilterUUID = false
if subtle.ConstantTimeCompare(vc.userUUID.Bytes(), header[:uuid.Size]) != 1 {
err = fmt.Errorf("XTLS Vision server responded unknown UUID: %s",
uuid.FromBytesOrNil(header[:uuid.Size]).String())
log.Errorln(err.Error())
return err
}
header = header[uuid.Size:]
}
vc.readRemainingPadding = int(binary.BigEndian.Uint16(header[3:]))
vc.readRemainingContent = int(binary.BigEndian.Uint16(header[1:]))
vc.readLastCommand = header[0]
log.Debugln("XTLS Vision read padding: command=%d, payloadLen=%d, paddingLen=%d",
vc.readLastCommand, vc.readRemainingContent, vc.readRemainingPadding)
return vc.ReadBuffer(buffer)
//}
case commandPaddingEnd:
vc.readProcess = false
return vc.ReadBuffer(buffer)
case commandPaddingDirect:
needReturn := false
if vc.input != nil {
_, err := buffer.ReadFrom(vc.input)
if err != nil {
return err
}
if vc.input.Len() == 0 {
needReturn = true
vc.input = nil
} else { // buffer is full
return nil
}
}
if vc.rawInput != nil {
_, err := buffer.ReadFrom(vc.rawInput)
if err != nil {
return err
}
needReturn = true
if vc.rawInput.Len() == 0 {
vc.rawInput = nil
}
}
if vc.input == nil && vc.rawInput == nil {
vc.readProcess = false
vc.ExtendedReader = N.NewExtendedReader(vc.Conn)
log.Debugln("XTLS Vision direct read start")
}
if needReturn {
return nil
}
default:
err := fmt.Errorf("XTLS Vision read unknown command: %d", vc.readLastCommand)
log.Debugln(err.Error())
return err
}
}
return vc.ExtendedReader.ReadBuffer(buffer)
}
func (vc *Conn) Write(p []byte) (int, error) {
if vc.writeFilterApplicationData {
_buffer := buf.StackNew()
defer buf.KeepAlive(_buffer)
buffer := buf.Dup(_buffer)
defer buffer.Release()
buffer.Write(p)
err := vc.WriteBuffer(buffer)
if err != nil {
return 0, err
}
return len(p), nil
}
return vc.ExtendedWriter.Write(p)
}
func (vc *Conn) WriteBuffer(buffer *buf.Buffer) (err error) {
if vc.needHandshake {
vc.needHandshake = false
if buffer.IsEmpty() {
ApplyPadding(buffer, commandPaddingContinue, vc.userUUID, false)
} else {
vc.FilterTLS(buffer.Bytes())
ApplyPadding(buffer, commandPaddingContinue, vc.userUUID, vc.isTLS)
}
err = vc.ExtendedWriter.WriteBuffer(buffer)
if err != nil {
buffer.Release()
return err
}
switch underlying := vc.tlsConn.(type) {
case *gotls.Conn:
if underlying.ConnectionState().Version != gotls.VersionTLS13 {
buffer.Release()
return ErrNotTLS13
}
case *utls.UConn:
if underlying.ConnectionState().Version != utls.VersionTLS13 {
buffer.Release()
return ErrNotTLS13
}
}
vc.tlsConn = nil
return nil
}
if vc.writeFilterApplicationData {
buffer2 := ReshapeBuffer(buffer)
defer buffer2.Release()
vc.FilterTLS(buffer.Bytes())
command := commandPaddingContinue
if !vc.isTLS {
command = commandPaddingEnd
// disable XTLS
//vc.readProcess = false
vc.writeFilterApplicationData = false
vc.packetsToFilter = 0
} else if buffer.Len() > 6 && bytes.Equal(buffer.To(3), tlsApplicationDataStart) || vc.packetsToFilter <= 0 {
command = commandPaddingEnd
if vc.enableXTLS {
command = commandPaddingDirect
vc.writeDirect = true
}
vc.writeFilterApplicationData = false
}
ApplyPadding(buffer, command, nil, vc.isTLS)
err = vc.ExtendedWriter.WriteBuffer(buffer)
if err != nil {
return err
}
if vc.writeDirect {
vc.ExtendedWriter = N.NewExtendedWriter(vc.Conn)
log.Debugln("XTLS Vision direct write start")
//time.Sleep(5 * time.Millisecond)
}
if buffer2 != nil {
if vc.writeDirect || !vc.isTLS {
return vc.ExtendedWriter.WriteBuffer(buffer2)
}
vc.FilterTLS(buffer2.Bytes())
command = commandPaddingContinue
if buffer2.Len() > 6 && bytes.Equal(buffer2.To(3), tlsApplicationDataStart) || vc.packetsToFilter <= 0 {
command = commandPaddingEnd
if vc.enableXTLS {
command = commandPaddingDirect
vc.writeDirect = true
}
vc.writeFilterApplicationData = false
}
ApplyPadding(buffer2, command, nil, vc.isTLS)
err = vc.ExtendedWriter.WriteBuffer(buffer2)
if vc.writeDirect {
vc.ExtendedWriter = N.NewExtendedWriter(vc.Conn)
log.Debugln("XTLS Vision direct write start")
//time.Sleep(10 * time.Millisecond)
}
}
return err
}
/*if vc.writeDirect {
log.Debugln("XTLS Vision Direct write, payloadLen=%d", buffer.Len())
}*/
return vc.ExtendedWriter.WriteBuffer(buffer)
}
func (vc *Conn) FrontHeadroom() int {
return PaddingHeaderLen
}
func (vc *Conn) NeedHandshake() bool {
return vc.needHandshake
}
func (vc *Conn) Upstream() any {
return vc.upstream
}

2
transport/vless/filter.go → transport/vless/vision/filter.go
View file

@ -1,4 +1,4 @@
package vless
package vision
import (
"bytes"

6
transport/vless/vision.go → transport/vless/vision/padding.go
View file

@ -1,4 +1,4 @@
package vless
package vision
import (
"bytes"
@ -12,7 +12,7 @@ import (
)
const (
paddingHeaderLen = 1 + 2 + 2 // =5
PaddingHeaderLen = uuid.Size + 1 + 2 + 2 // =21
commandPaddingContinue byte = 0x00
commandPaddingEnd byte = 0x01
@ -67,7 +67,7 @@ func ApplyPadding(buffer *buf.Buffer, command byte, userUUID *uuid.UUID, padding
}
func ReshapeBuffer(buffer *buf.Buffer) *buf.Buffer {
if buffer.Len() <= buf.BufferSize-paddingHeaderLen {
if buffer.Len() <= buf.BufferSize-PaddingHeaderLen {
return nil
}
cutAt := bytes.LastIndex(buffer.Bytes(), tlsApplicationDataStart)

70
transport/vless/vision/vision.go Normal file
View file

@ -0,0 +1,70 @@
// Package vision implements VLESS flow `xtls-rprx-vision` introduced by Xray-core.
package vision
import (
"bytes"
gotls "crypto/tls"
"errors"
"fmt"
"net"
"reflect"
"unsafe"
N "github.com/Dreamacro/clash/common/net"
tlsC "github.com/Dreamacro/clash/component/tls"
"github.com/gofrs/uuid/v5"
"github.com/sagernet/sing/common"
utls "github.com/sagernet/utls"
)
var ErrNotTLS13 = errors.New("XTLS Vision based on TLS 1.3 outer connection")
type connWithUpstream interface {
net.Conn
common.WithUpstream
}
func NewConn(conn connWithUpstream, userUUID *uuid.UUID) (*Conn, error) {
c := &Conn{
ExtendedReader: N.NewExtendedReader(conn),
ExtendedWriter: N.NewExtendedWriter(conn),
upstream: conn,
userUUID: userUUID,
packetsToFilter: 6,
needHandshake: true,
readProcess: true,
readFilterUUID: true,
writeFilterApplicationData: true,
}
var t reflect.Type
var p unsafe.Pointer
switch underlying := conn.Upstream().(type) {
case *gotls.Conn:
//log.Debugln("type tls")
c.Conn = underlying.NetConn()
c.tlsConn = underlying
t = reflect.TypeOf(underlying).Elem()
p = unsafe.Pointer(underlying)
case *utls.UConn:
//log.Debugln("type *utls.UConn")
c.Conn = underlying.NetConn()
c.tlsConn = underlying
t = reflect.TypeOf(underlying.Conn).Elem()
p = unsafe.Pointer(underlying.Conn)
case *tlsC.UConn:
//log.Debugln("type *tlsC.UConn")
c.Conn = underlying.NetConn()
c.tlsConn = underlying.UConn
t = reflect.TypeOf(underlying.Conn).Elem()
//log.Debugln("t:%v", t)
p = unsafe.Pointer(underlying.Conn)
default:
return nil, fmt.Errorf(`failed to use vision, maybe "security" is not "tls" or "utls"`)
}
i, _ := t.FieldByName("input")
r, _ := t.FieldByName("rawInput")
c.input = (*bytes.Reader)(unsafe.Add(p, i.Offset))
c.rawInput = (*bytes.Buffer)(unsafe.Add(p, r.Offset))
return c, nil
}

5
transport/vless/xtls.go
View file

@ -2,17 +2,12 @@ package vless
import (
"context"
"errors"
"net"
tlsC "github.com/Dreamacro/clash/component/tls"
xtls "github.com/xtls/go"
)
var (
ErrNotTLS13 = errors.New("XTLS Vision based on TLS 1.3 outer connection")
)
type XTLSConfig struct {
Host string
SkipCertVerify bool