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XUDP protocol: Add Global ID & UoT Migration 

The first UoT protocol that supports UoT Migration
Thank @yuhan6665 for testing
This commit is contained in:
RPRX 2023-04-06 10:21:35 +00:00 committed by GitHub
parent 67affe3753
commit be23d5d3b7
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GPG Key ID: 4AEE18F83AFDEB23
39 changed files with 506 additions and 99 deletions
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32
app/proxyman/config.pb.go
View File

@ -595,6 +595,8 @@ type MultiplexingConfig struct {
Enabled bool `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
// Max number of concurrent connections that one Mux connection can handle.
Concurrency uint32 `protobuf:"varint,2,opt,name=concurrency,proto3" json:"concurrency,omitempty"`
// Both(0), TCP(1), UDP(2).
Only uint32 `protobuf:"varint,3,opt,name=only,proto3" json:"only,omitempty"`
}
func (x *MultiplexingConfig) Reset() {
@ -643,6 +645,13 @@ func (x *MultiplexingConfig) GetConcurrency() uint32 {
return 0
}
func (x *MultiplexingConfig) GetOnly() uint32 {
if x != nil {
return x.Only
}
return 0
}
type AllocationStrategy_AllocationStrategyConcurrency struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -856,21 +865,22 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
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}
var (

2
app/proxyman/config.proto
View File

@ -98,4 +98,6 @@ message MultiplexingConfig {
bool enabled = 1;
// Max number of concurrent connections that one Mux connection can handle.
uint32 concurrency = 2;
// Both(0), TCP(1), UDP(2).
uint32 only = 3;
}

7
app/proxyman/outbound/handler.go
View File

@ -111,7 +111,7 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
return nil, newError("invalid mux concurrency: ", config.Concurrency).AtWarning()
}
h.mux = &mux.ClientManager{
Enabled: h.senderSettings.MultiplexSettings.Enabled,
Enabled: config.Enabled,
Picker: &mux.IncrementalWorkerPicker{
Factory: &mux.DialingWorkerFactory{
Proxy: proxyHandler,
@ -122,6 +122,7 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
},
},
},
Only: config.Only,
}
}
@ -136,7 +137,9 @@ func (h *Handler) Tag() string {
// Dispatch implements proxy.Outbound.Dispatch.
func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
if h.mux != nil && (h.mux.Enabled || session.MuxPreferedFromContext(ctx)) {
outbound := session.OutboundFromContext(ctx)
if h.mux != nil && (h.mux.Enabled || session.MuxPreferedFromContext(ctx)) &&
(h.mux.Only == 0 || (outbound != nil && h.mux.Only == uint32(outbound.Target.Network))) {
if err := h.mux.Dispatch(ctx, link); err != nil {
err := newError("failed to process mux outbound traffic").Base(err)
session.SubmitOutboundErrorToOriginator(ctx, err)

26
common/mux/client.go
View File

@ -14,6 +14,7 @@ import (
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/common/signal/done"
"github.com/xtls/xray-core/common/task"
"github.com/xtls/xray-core/common/xudp"
"github.com/xtls/xray-core/proxy"
"github.com/xtls/xray-core/transport"
"github.com/xtls/xray-core/transport/internet"
@ -23,6 +24,7 @@ import (
type ClientManager struct {
Enabled bool // wheather mux is enabled from user config
Picker WorkerPicker
Only uint32
}
func (m *ClientManager) Dispatch(ctx context.Context, link *transport.Link) error {
@ -247,22 +249,20 @@ func fetchInput(ctx context.Context, s *Session, output buf.Writer) {
transferType = protocol.TransferTypePacket
}
s.transferType = transferType
writer := NewWriter(s.ID, dest, output, transferType)
defer s.Close()
writer := NewWriter(s.ID, dest, output, transferType, xudp.GetGlobalID(ctx))
defer s.Close(false)
defer writer.Close()
newError("dispatching request to ", dest).WriteToLog(session.ExportIDToError(ctx))
if err := writeFirstPayload(s.input, writer); err != nil {
newError("failed to write first payload").Base(err).WriteToLog(session.ExportIDToError(ctx))
writer.hasError = true
common.Interrupt(s.input)
return
}
if err := buf.Copy(s.input, writer); err != nil {
newError("failed to fetch all input").Base(err).WriteToLog(session.ExportIDToError(ctx))
writer.hasError = true
common.Interrupt(s.input)
return
}
}
@ -335,15 +335,8 @@ func (m *ClientWorker) handleStatusKeep(meta *FrameMetadata, reader *buf.Buffere
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()
// Notify remote peer to close this session.
closingWriter := NewResponseWriter(meta.SessionID, m.link.Writer, protocol.TransferTypeStream)
closingWriter.Close()
drainErr := buf.Copy(rr, buf.Discard)
common.Interrupt(s.input)
s.Close()
return drainErr
s.Close(false)
return buf.Copy(rr, buf.Discard)
}
return err
@ -351,12 +344,7 @@ func (m *ClientWorker) handleStatusKeep(meta *FrameMetadata, reader *buf.Buffere
func (m *ClientWorker) handleStatusEnd(meta *FrameMetadata, reader *buf.BufferedReader) error {
if s, found := m.sessionManager.Get(meta.SessionID); found {
if meta.Option.Has(OptionError) {
common.Interrupt(s.input)
common.Interrupt(s.output)
}
common.Interrupt(s.input)
s.Close()
s.Close(false)
}
if meta.Option.Has(OptionData) {
return buf.Copy(NewStreamReader(reader), buf.Discard)

9
common/mux/frame.go
View File

@ -58,6 +58,7 @@ type FrameMetadata struct {
SessionID uint16
Option bitmask.Byte
SessionStatus SessionStatus
GlobalID [8]byte
}
func (f FrameMetadata) WriteTo(b *buf.Buffer) error {
@ -81,6 +82,9 @@ func (f FrameMetadata) WriteTo(b *buf.Buffer) error {
if err := addrParser.WriteAddressPort(b, f.Target.Address, f.Target.Port); err != nil {
return err
}
if b.UDP != nil {
b.Write(f.GlobalID[:])
}
} else if b.UDP != nil {
b.WriteByte(byte(TargetNetworkUDP))
addrParser.WriteAddressPort(b, b.UDP.Address, b.UDP.Port)
@ -144,5 +148,10 @@ func (f *FrameMetadata) UnmarshalFromBuffer(b *buf.Buffer) error {
}
}
if f.SessionStatus == SessionStatusNew && f.Option.Has(OptionData) &&
f.Target.Network == net.Network_UDP && b.Len() >= 8 {
copy(f.GlobalID[:], b.Bytes())
}
return nil
}

6
common/mux/mux_test.go
View File

@ -32,13 +32,13 @@ func TestReaderWriter(t *testing.T) {
pReader, pWriter := pipe.New(pipe.WithSizeLimit(1024))
dest := net.TCPDestination(net.DomainAddress("example.com"), 80)
writer := NewWriter(1, dest, pWriter, protocol.TransferTypeStream)
writer := NewWriter(1, dest, pWriter, protocol.TransferTypeStream, [8]byte{})
dest2 := net.TCPDestination(net.LocalHostIP, 443)
writer2 := NewWriter(2, dest2, pWriter, protocol.TransferTypeStream)
writer2 := NewWriter(2, dest2, pWriter, protocol.TransferTypeStream, [8]byte{})
dest3 := net.TCPDestination(net.LocalHostIPv6, 18374)
writer3 := NewWriter(3, dest3, pWriter, protocol.TransferTypeStream)
writer3 := NewWriter(3, dest3, pWriter, protocol.TransferTypeStream, [8]byte{})
writePayload := func(writer *Writer, payload ...byte) error {
b := buf.New()

100
common/mux/server.go
View File

@ -2,6 +2,7 @@ package mux
import (
"context"
"fmt"
"io"
"github.com/xtls/xray-core/common"
@ -11,6 +12,7 @@ import (
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/protocol"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/common/xudp"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/features/routing"
"github.com/xtls/xray-core/transport"
@ -99,7 +101,7 @@ func handle(ctx context.Context, s *Session, output buf.Writer) {
}
writer.Close()
s.Close()
s.Close(false)
}
func (w *ServerWorker) ActiveConnections() uint32 {
@ -131,6 +133,81 @@ func (w *ServerWorker) handleStatusNew(ctx context.Context, meta *FrameMetadata,
}
ctx = log.ContextWithAccessMessage(ctx, msg)
}
if meta.GlobalID != [8]byte{} {
mb, err := NewPacketReader(reader, &meta.Target).ReadMultiBuffer()
if err != nil {
return err
}
XUDPManager.Lock()
x := XUDPManager.Map[meta.GlobalID]
if x == nil {
x = &XUDP{GlobalID: meta.GlobalID}
XUDPManager.Map[meta.GlobalID] = x
XUDPManager.Unlock()
} else {
if x.Status == Initializing { // nearly impossible
XUDPManager.Unlock()
if xudp.Show {
fmt.Printf("XUDP hit: %v err: conflict\n", meta.GlobalID)
}
// It's not a good idea to return an err here, so just let client wait.
// Client will receive an End frame after sending a Keep frame.
return nil
}
x.Status = Initializing
XUDPManager.Unlock()
x.Mux.Close(false) // detach from previous Mux
b := buf.New()
b.Write(mb[0].Bytes())
b.UDP = mb[0].UDP
if err = x.Mux.output.WriteMultiBuffer(mb); err != nil {
x.Interrupt()
mb = buf.MultiBuffer{b}
} else {
b.Release()
mb = nil
}
if xudp.Show {
fmt.Printf("XUDP hit: %v err: %v\n", meta.GlobalID, err)
}
}
if mb != nil {
ctx = session.ContextWithTimeoutOnly(ctx, true)
// Actually, it won't return an error in Xray-core's implementations.
link, err := w.dispatcher.Dispatch(ctx, meta.Target)
if err != nil {
err = newError("failed to dispatch request to ", meta.Target).Base(err)
if xudp.Show {
fmt.Printf("XUDP new: %v err: %v\n", meta.GlobalID, err)
}
return err // it will break the whole Mux connection
}
link.Writer.WriteMultiBuffer(mb) // it's meaningless to test a new pipe
x.Mux = &Session{
input: link.Reader,
output: link.Writer,
}
if xudp.Show {
fmt.Printf("XUDP new: %v err: %v\n", meta.GlobalID, err)
}
}
x.Mux = &Session{
input: x.Mux.input,
output: x.Mux.output,
parent: w.sessionManager,
ID: meta.SessionID,
transferType: protocol.TransferTypePacket,
XUDP: x,
}
go handle(ctx, x.Mux, w.link.Writer)
x.Status = Active
if !w.sessionManager.Add(x.Mux) {
x.Mux.Close(false)
}
return nil
}
link, err := w.dispatcher.Dispatch(ctx, meta.Target)
if err != nil {
if meta.Option.Has(OptionData) {
@ -157,8 +234,7 @@ func (w *ServerWorker) handleStatusNew(ctx context.Context, meta *FrameMetadata,
rr := s.NewReader(reader, &meta.Target)
if err := buf.Copy(rr, s.output); err != nil {
buf.Copy(rr, buf.Discard)
common.Interrupt(s.input)
return s.Close()
return s.Close(false)
}
return nil
}
@ -182,15 +258,8 @@ func (w *ServerWorker) handleStatusKeep(meta *FrameMetadata, reader *buf.Buffere
if err != nil && buf.IsWriteError(err) {
newError("failed to write to downstream writer. closing session ", s.ID).Base(err).WriteToLog()
// Notify remote peer to close this session.
closingWriter := NewResponseWriter(meta.SessionID, w.link.Writer, protocol.TransferTypeStream)
closingWriter.Close()
drainErr := buf.Copy(rr, buf.Discard)
common.Interrupt(s.input)
s.Close()
return drainErr
s.Close(false)
return buf.Copy(rr, buf.Discard)
}
return err
@ -198,12 +267,7 @@ func (w *ServerWorker) handleStatusKeep(meta *FrameMetadata, reader *buf.Buffere
func (w *ServerWorker) handleStatusEnd(meta *FrameMetadata, reader *buf.BufferedReader) error {
if s, found := w.sessionManager.Get(meta.SessionID); found {
if meta.Option.Has(OptionError) {
common.Interrupt(s.input)
common.Interrupt(s.output)
}
common.Interrupt(s.input)
s.Close()
s.Close(false)
}
if meta.Option.Has(OptionData) {
return buf.Copy(NewStreamReader(reader), buf.Discard)

100
common/mux/session.go
View File

@ -1,12 +1,18 @@
package mux
import (
"fmt"
"io"
"runtime"
"sync"
"time"
"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"
"github.com/xtls/xray-core/common/xudp"
"github.com/xtls/xray-core/transport/pipe"
)
type SessionManager struct {
@ -61,21 +67,25 @@ func (m *SessionManager) Allocate() *Session {
return s
}
func (m *SessionManager) Add(s *Session) {
func (m *SessionManager) Add(s *Session) bool {
m.Lock()
defer m.Unlock()
if m.closed {
return
return false
}
m.count++
m.sessions[s.ID] = s
return true
}
func (m *SessionManager) Remove(id uint16) {
func (m *SessionManager) Remove(locked bool, id uint16) {
if !locked {
m.Lock()
defer m.Unlock()
}
locked = true
if m.closed {
return
@ -83,9 +93,11 @@ func (m *SessionManager) Remove(id uint16) {
delete(m.sessions, id)
/*
if len(m.sessions) == 0 {
m.sessions = make(map[uint16]*Session, 16)
}
*/
}
func (m *SessionManager) Get(id uint16) (*Session, bool) {
@ -127,8 +139,7 @@ func (m *SessionManager) Close() error {
m.closed = true
for _, s := range m.sessions {
common.Close(s.input)
common.Close(s.output)
s.Close(true)
}
m.sessions = nil
@ -142,13 +153,42 @@ type Session struct {
parent *SessionManager
ID uint16
transferType protocol.TransferType
closed bool
XUDP *XUDP
}
// Close closes all resources associated with this session.
func (s *Session) Close() error {
func (s *Session) Close(locked bool) error {
if !locked {
s.parent.Lock()
defer s.parent.Unlock()
}
locked = true
if s.closed {
return nil
}
s.closed = true
if s.XUDP == nil {
common.Interrupt(s.input)
common.Close(s.output)
common.Close(s.input)
s.parent.Remove(s.ID)
} else {
// Stop existing handle(), then trigger writer.Close().
// Note that s.output may be dispatcher.SizeStatWriter.
s.input.(*pipe.Reader).ReturnAnError(io.EOF)
runtime.Gosched()
// If the error set by ReturnAnError still exists, clear it.
s.input.(*pipe.Reader).Recover()
XUDPManager.Lock()
if s.XUDP.Status == Active {
s.XUDP.Expire = time.Now().Add(time.Minute)
s.XUDP.Status = Expiring
if xudp.Show {
fmt.Printf("XUDP put: %v\n", s.XUDP.GlobalID)
}
}
XUDPManager.Unlock()
}
s.parent.Remove(locked, s.ID)
return nil
}
@ -159,3 +199,47 @@ func (s *Session) NewReader(reader *buf.BufferedReader, dest *net.Destination) b
}
return NewPacketReader(reader, dest)
}
const (
Initializing = 0
Active = 1
Expiring = 2
)
type XUDP struct {
GlobalID [8]byte
Status uint64
Expire time.Time
Mux *Session
}
func (x *XUDP) Interrupt() {
common.Interrupt(x.Mux.input)
common.Close(x.Mux.output)
}
var XUDPManager struct {
sync.Mutex
Map map[[8]byte]*XUDP
}
func init() {
XUDPManager.Map = make(map[[8]byte]*XUDP)
go func() {
for {
time.Sleep(time.Minute)
now := time.Now()
XUDPManager.Lock()
for id, x := range XUDPManager.Map {
if x.Status == Expiring && now.After(x.Expire) {
x.Interrupt()
delete(XUDPManager.Map, id)
if xudp.Show {
fmt.Printf("XUDP del: %v\n", id)
}
}
}
XUDPManager.Unlock()
}
}()
}

2
common/mux/session_test.go
View File

@ -44,7 +44,7 @@ func TestSessionManagerClose(t *testing.T) {
if m.CloseIfNoSession() {
t.Error("able to close")
}
m.Remove(s.ID)
m.Remove(false, s.ID)
if !m.CloseIfNoSession() {
t.Error("not able to close")
}

5
common/mux/writer.go
View File

@ -15,15 +15,17 @@ type Writer struct {
followup bool
hasError bool
transferType protocol.TransferType
globalID [8]byte
}
func NewWriter(id uint16, dest net.Destination, writer buf.Writer, transferType protocol.TransferType) *Writer {
func NewWriter(id uint16, dest net.Destination, writer buf.Writer, transferType protocol.TransferType, globalID [8]byte) *Writer {
return &Writer{
id: id,
dest: dest,
writer: writer,
followup: false,
transferType: transferType,
globalID: globalID,
}
}
@ -40,6 +42,7 @@ func (w *Writer) getNextFrameMeta() FrameMetadata {
meta := FrameMetadata{
SessionID: w.id,
Target: w.dest,
GlobalID: w.globalID,
}
if w.followup {

16
common/session/context.go
View File

@ -2,10 +2,14 @@ package session
import (
"context"
_ "unsafe"
"github.com/xtls/xray-core/features/routing"
)
//go:linkname IndependentCancelCtx context.newCancelCtx
func IndependentCancelCtx(parent context.Context) context.Context
type sessionKey int
const (
@ -17,6 +21,7 @@ const (
sockoptSessionKey
trackedConnectionErrorKey
dispatcherKey
timeoutOnlyKey
)
// ContextWithID returns a new context with the given ID.
@ -131,3 +136,14 @@ func DispatcherFromContext(ctx context.Context) routing.Dispatcher {
}
return nil
}
func ContextWithTimeoutOnly(ctx context.Context, only bool) context.Context {
return context.WithValue(ctx, timeoutOnlyKey, only)
}
func TimeoutOnlyFromContext(ctx context.Context) bool {
if val, ok := ctx.Value(timeoutOnlyKey).(bool); ok {
return val
}
return false
}

2
common/session/session.go
View File

@ -42,6 +42,8 @@ type Inbound struct {
Gateway net.Destination
// Tag of the inbound proxy that handles the connection.
Tag string
// Name of the inbound proxy that handles the connection.
Name string
// User is the user that authencates for the inbound. May be nil if the protocol allows anounymous traffic.
User *protocol.MemoryUser
// Conn is actually internet.Connection. May be nil.

12
common/task/task.go
View File

@ -38,6 +38,12 @@ func Run(ctx context.Context, tasks ...func() error) error {
}(task)
}
/*
if altctx := ctx.Value("altctx"); altctx != nil {
ctx = altctx.(context.Context)
}
*/
for i := 0; i < n; i++ {
select {
case err := <-done:
@ -48,5 +54,11 @@ func Run(ctx context.Context, tasks ...func() error) error {
}
}
/*
if cancel := ctx.Value("cancel"); cancel != nil {
cancel.(context.CancelFunc)()
}
*/
return nil
}

59
common/xudp/xudp.go
View File

@ -1,30 +1,76 @@
package xudp
import (
"context"
"crypto/rand"
"encoding/base64"
"fmt"
"io"
"os"
"strings"
"github.com/xtls/xray-core/common/buf"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/protocol"
"github.com/xtls/xray-core/common/session"
"lukechampine.com/blake3"
)
var addrParser = protocol.NewAddressParser(
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 {
var (
Show bool
BaseKey [32]byte
)
const (
EnvShow = "XRAY_XUDP_SHOW"
EnvBaseKey = "XRAY_XUDP_BASEKEY"
)
func init() {
if strings.ToLower(os.Getenv(EnvShow)) == "true" {
Show = true
}
if raw := os.Getenv(EnvBaseKey); raw != "" {
if key, _ := base64.RawURLEncoding.DecodeString(raw); len(key) == len(BaseKey) {
copy(BaseKey[:], key)
return
} else {
panic(EnvBaseKey + ": invalid value: " + raw)
}
}
rand.Read(BaseKey[:])
}
func GetGlobalID(ctx context.Context) (globalID [8]byte) {
if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Source.Network == net.Network_UDP &&
(inbound.Name == "dokodemo-door" || inbound.Name == "socks" || inbound.Name == "shadowsocks") {
h := blake3.New(8, BaseKey[:])
h.Write([]byte(inbound.Source.String()))
copy(globalID[:], h.Sum(nil))
fmt.Printf("XUDP inbound.Source.String(): %v\tglobalID: %v\n", inbound.Source.String(), globalID)
}
return
}
func NewPacketWriter(writer buf.Writer, dest net.Destination, globalID [8]byte) *PacketWriter {
return &PacketWriter{
Writer: writer,
Dest: dest,
GlobalID: globalID,
}
}
type PacketWriter struct {
Writer buf.Writer
Dest net.Destination
GlobalID [8]byte
}
func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
@ -42,14 +88,17 @@ func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
eb.WriteByte(1) // New
eb.WriteByte(1) // Opt
eb.WriteByte(2) // UDP
addrParser.WriteAddressPort(eb, w.Dest.Address, w.Dest.Port)
AddrParser.WriteAddressPort(eb, w.Dest.Address, w.Dest.Port)
if b.UDP != nil { // make sure it's user's proxy request
eb.Write(w.GlobalID[:])
}
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)
AddrParser.WriteAddressPort(eb, b.UDP.Address, b.UDP.Port)
}
}
l := eb.Len() - 2
@ -98,7 +147,7 @@ func (r *PacketReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
case 2:
if l != 4 {
b.Advance(5)
addr, port, err := addrParser.ReadAddressPort(nil, b)
addr, port, err := AddrParser.ReadAddressPort(nil, b)
if err != nil {
b.Release()
return nil, err

2
go.mod
View File

@ -29,6 +29,7 @@ require (
google.golang.org/protobuf v1.30.0
gvisor.dev/gvisor v0.0.0-20220901235040-6ca97ef2ce1c
h12.io/socks v1.0.3
lukechampine.com/blake3 v1.1.7
)
require (
@ -55,5 +56,4 @@ require (
google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
lukechampine.com/blake3 v1.1.7 // indirect
)

21
infra/conf/xray.go
View File

@ -10,6 +10,7 @@ import (
"github.com/xtls/xray-core/app/dispatcher"
"github.com/xtls/xray-core/app/proxyman"
"github.com/xtls/xray-core/app/stats"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/serial"
core "github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/transport/internet"
@ -109,6 +110,7 @@ func (c *SniffingConfig) Build() (*proxyman.SniffingConfig, error) {
type MuxConfig struct {
Enabled bool `json:"enabled"`
Concurrency int16 `json:"concurrency"`
Only string `json:"only"`
}
// Build creates MultiplexingConfig, Concurrency < 0 completely disables mux.
@ -116,16 +118,23 @@ func (m *MuxConfig) Build() *proxyman.MultiplexingConfig {
if m.Concurrency < 0 {
return nil
}
var con uint32 = 8
if m.Concurrency > 0 {
con = uint32(m.Concurrency)
if m.Concurrency == 0 {
m.Concurrency = 8
}
return &proxyman.MultiplexingConfig{
config := &proxyman.MultiplexingConfig{
Enabled: m.Enabled,
Concurrency: con,
Concurrency: uint32(m.Concurrency),
}
switch strings.ToLower(m.Only) {
case "tcp":
config.Only = uint32(net.Network_TCP)
case "udp":
config.Only = uint32(net.Network_UDP)
}
return config
}
type InboundDetourAllocationConfig struct {

4
proxy/dns/dns.go
View File

@ -148,6 +148,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.
}
}
if session.TimeoutOnlyFromContext(ctx) {
ctx, _ = context.WithCancel(context.Background())
}
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, h.timeout)

1
proxy/dokodemo/dokodemo.go
View File

@ -103,6 +103,7 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
inbound := session.InboundFromContext(ctx)
if inbound != nil {
inbound.Name = "dokodemo-door"
inbound.User = &protocol.MemoryUser{
Level: d.config.UserLevel,
}

17
proxy/freedom/freedom.go
View File

@ -149,9 +149,20 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
}
defer conn.Close()
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
plcy := h.policy()
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, plcy.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, plcy.Timeouts.ConnectionIdle)
requestDone := func() error {
defer timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
@ -186,6 +197,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
return nil
}
if newCtx != nil {
ctx = newCtx
}
if err := task.Run(ctx, requestDone, task.OnSuccess(responseDone, task.Close(output))); err != nil {
return newError("connection ends").Base(err)
}

17
proxy/http/client.go
View File

@ -128,8 +128,19 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
p = c.policyManager.ForLevel(user.Level)
}
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, p.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, p.Timeouts.ConnectionIdle)
requestFunc := func() error {
defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
@ -140,6 +151,10 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
}
if newCtx != nil {
ctx = newCtx
}
responseDonePost := task.OnSuccess(responseFunc, task.Close(link.Writer))
if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
return newError("connection ends").Base(err)

1
proxy/http/server.go
View File

@ -85,6 +85,7 @@ type readerOnly struct {
func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Connection, dispatcher routing.Dispatcher) error {
inbound := session.InboundFromContext(ctx)
if inbound != nil {
inbound.Name = "http"
inbound.User = &protocol.MemoryUser{
Level: s.config.UserLevel,
}

17
proxy/shadowsocks/client.go
View File

@ -96,9 +96,24 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
}
request.User = user
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
sessionPolicy := c.policyManager.ForLevel(user.Level)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, sessionPolicy.Timeouts.ConnectionIdle)
if newCtx != nil {
ctx = newCtx
}
if request.Command == protocol.RequestCommandTCP {
requestDone := func() error {

1
proxy/shadowsocks/server.go
View File

@ -113,6 +113,7 @@ func (s *Server) handleUDPPayload(ctx context.Context, conn stat.Connection, dis
if inbound == nil {
panic("no inbound metadata")
}
inbound.Name = "shadowsocks"
var dest *net.Destination

3
proxy/shadowsocks_2022/inbound.go
View File

@ -3,7 +3,7 @@ package shadowsocks_2022
import (
"context"
"github.com/sagernet/sing-shadowsocks"
shadowsocks "github.com/sagernet/sing-shadowsocks"
"github.com/sagernet/sing-shadowsocks/shadowaead_2022"
C "github.com/sagernet/sing/common"
B "github.com/sagernet/sing/common/buf"
@ -64,6 +64,7 @@ func (i *Inbound) Network() []net.Network {
func (i *Inbound) Process(ctx context.Context, network net.Network, connection stat.Connection, dispatcher routing.Dispatcher) error {
inbound := session.InboundFromContext(ctx)
inbound.Name = "shadowsocks-2022"
var metadata M.Metadata
if inbound.Source.IsValid() {

1
proxy/shadowsocks_2022/inbound_multi.go
View File

@ -153,6 +153,7 @@ func (i *MultiUserInbound) Network() []net.Network {
func (i *MultiUserInbound) Process(ctx context.Context, network net.Network, connection stat.Connection, dispatcher routing.Dispatcher) error {
inbound := session.InboundFromContext(ctx)
inbound.Name = "shadowsocks-2022-multi"
var metadata M.Metadata
if inbound.Source.IsValid() {

1
proxy/shadowsocks_2022/inbound_relay.go
View File

@ -85,6 +85,7 @@ func (i *RelayInbound) Network() []net.Network {
func (i *RelayInbound) Process(ctx context.Context, network net.Network, connection stat.Connection, dispatcher routing.Dispatcher) error {
inbound := session.InboundFromContext(ctx)
inbound.Name = "shadowsocks-2022-relay"
var metadata M.Metadata
if inbound.Source.IsValid() {

6
proxy/shadowsocks_2022/outbound.go
View File

@ -6,7 +6,7 @@ import (
"runtime"
"time"
"github.com/sagernet/sing-shadowsocks"
shadowsocks "github.com/sagernet/sing-shadowsocks"
"github.com/sagernet/sing-shadowsocks/shadowaead_2022"
C "github.com/sagernet/sing/common"
B "github.com/sagernet/sing/common/buf"
@ -88,6 +88,10 @@ func (o *Outbound) Process(ctx context.Context, link *transport.Link, dialer int
return newError("failed to connect to server").Base(err)
}
if session.TimeoutOnlyFromContext(ctx) {
ctx, _ = context.WithCancel(context.Background())
}
if network == net.Network_TCP {
serverConn := o.method.DialEarlyConn(connection, toSocksaddr(destination))
var handshake bool

17
proxy/socks/client.go
View File

@ -151,8 +151,19 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
newError("failed to clear deadline after handshake").Base(err).WriteToLog(session.ExportIDToError(ctx))
}
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, p.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, p.Timeouts.ConnectionIdle)
var requestFunc func() error
var responseFunc func() error
@ -183,6 +194,10 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
}
}
if newCtx != nil {
ctx = newCtx
}
responseDonePost := task.OnSuccess(responseFunc, task.Close(link.Writer))
if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
return newError("connection ends").Base(err)

1
proxy/socks/server.go
View File

@ -64,6 +64,7 @@ func (s *Server) Network() []net.Network {
// Process implements proxy.Inbound.
func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Connection, dispatcher routing.Dispatcher) error {
if inbound := session.InboundFromContext(ctx); inbound != nil {
inbound.Name = "socks"
inbound.User = &protocol.MemoryUser{
Level: s.config.UserLevel,
}

17
proxy/trojan/client.go
View File

@ -93,9 +93,20 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
Flow: account.Flow,
}
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
sessionPolicy := c.policyManager.ForLevel(user.Level)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, sessionPolicy.Timeouts.ConnectionIdle)
postRequest := func() error {
defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
@ -149,6 +160,10 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
return buf.Copy(reader, link.Writer, buf.UpdateActivity(timer))
}
if newCtx != nil {
ctx = newCtx
}
responseDoneAndCloseWriter := task.OnSuccess(getResponse, task.Close(link.Writer))
if err := task.Run(ctx, postRequest, responseDoneAndCloseWriter); err != nil {
return newError("connection ends").Base(err)

1
proxy/trojan/server.go
View File

@ -217,6 +217,7 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Con
if inbound == nil {
panic("no inbound metadata")
}
inbound.Name = "trojan"
inbound.User = user
sessionPolicy = s.policyManager.ForLevel(user.Level)

1
proxy/vless/inbound/inbound.go
View File

@ -438,6 +438,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
if inbound == nil {
panic("no inbound metadata")
}
inbound.Name = "vless"
inbound.User = request.User
account := request.User.Account.(*vless.MemoryAccount)

19
proxy/vless/outbound/outbound.go
View File

@ -170,9 +170,20 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
}
}
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
sessionPolicy := h.policyManager.ForLevel(request.User.Level)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, sessionPolicy.Timeouts.ConnectionIdle)
clientReader := link.Reader // .(*pipe.Reader)
clientWriter := link.Writer // .(*pipe.Writer)
@ -200,7 +211,7 @@ 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)
serverWriter = xudp.NewPacketWriter(serverWriter, target, xudp.GetGlobalID(ctx))
}
userUUID := account.ID.Bytes()
timeoutReader, ok := clientReader.(buf.TimeoutReader)
@ -300,6 +311,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
return nil
}
if newCtx != nil {
ctx = newCtx
}
if err := task.Run(ctx, postRequest, task.OnSuccess(getResponse, task.Close(clientWriter))); err != nil {
return newError("connection ends").Base(err).AtInfo()
}

1
proxy/vmess/inbound/inbound.go
View File

@ -287,6 +287,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
if inbound == nil {
panic("no inbound metadata")
}
inbound.Name = "vmess"
inbound.User = request.User
sessionPolicy = h.policyManager.ForLevel(request.User.Level)

19
proxy/vmess/outbound/outbound.go
View File

@ -138,11 +138,22 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
behaviorSeed := crc64.Checksum(hashkdf.Sum(nil), crc64.MakeTable(crc64.ISO))
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
session := encoding.NewClientSession(ctx, isAEAD, protocol.DefaultIDHash, int64(behaviorSeed))
sessionPolicy := h.policyManager.ForLevel(request.User.Level)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, sessionPolicy.Timeouts.ConnectionIdle)
if request.Command == protocol.RequestCommandUDP && h.cone && request.Port != 53 && request.Port != 443 {
request.Command = protocol.RequestCommandMux
@ -164,7 +175,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
}
bodyWriter2 := bodyWriter
if request.Command == protocol.RequestCommandMux && request.Port == 666 {
bodyWriter = xudp.NewPacketWriter(bodyWriter, target)
bodyWriter = xudp.NewPacketWriter(bodyWriter, target, xudp.GetGlobalID(ctx))
}
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)
@ -208,6 +219,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
return buf.Copy(bodyReader, output, buf.UpdateActivity(timer))
}
if newCtx != nil {
ctx = newCtx
}
responseDonePost := task.OnSuccess(responseDone, task.Close(output))
if err := task.Run(ctx, requestDone, responseDonePost); err != nil {
return newError("connection ends").Base(err)

17
proxy/wireguard/wireguard.go
View File

@ -127,10 +127,21 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
addr = net.IPAddress(ips[0])
}
var newCtx context.Context
var newCancel context.CancelFunc
if session.TimeoutOnlyFromContext(ctx) {
newCtx, newCancel = context.WithCancel(context.Background())
}
p := h.policyManager.ForLevel(0)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, p.Timeouts.ConnectionIdle)
timer := signal.CancelAfterInactivity(ctx, func() {
cancel()
if newCancel != nil {
newCancel()
}
}, p.Timeouts.ConnectionIdle)
addrPort := netip.AddrPortFrom(toNetIpAddr(addr), destination.Port.Value())
var requestFunc func() error
@ -166,6 +177,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
}
}
if newCtx != nil {
ctx = newCtx
}
responseDonePost := task.OnSuccess(responseFunc, task.Close(link.Writer))
if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
return newError("connection ends").Base(err)

3
transport/pipe/impl.go
View File

@ -37,6 +37,7 @@ type pipe struct {
readSignal *signal.Notifier
writeSignal *signal.Notifier
done *done.Instance
errChan chan error
option pipeOption
state state
}
@ -92,6 +93,8 @@ func (p *pipe) ReadMultiBuffer() (buf.MultiBuffer, error) {
select {
case <-p.readSignal.Wait():
case <-p.done.Wait():
case err = <-p.errChan:
return nil, err
}
}
}

1
transport/pipe/pipe.go
View File

@ -59,6 +59,7 @@ func New(opts ...Option) (*Reader, *Writer) {
readSignal: signal.NewNotifier(),
writeSignal: signal.NewNotifier(),
done: done.New(),
errChan: make(chan error, 1),
option: pipeOption{
limit: -1,
},

14
transport/pipe/reader.go
View File

@ -25,3 +25,17 @@ func (r *Reader) ReadMultiBufferTimeout(d time.Duration) (buf.MultiBuffer, error
func (r *Reader) Interrupt() {
r.pipe.Interrupt()
}
// ReturnAnError makes ReadMultiBuffer return an error, only once.
func (r *Reader) ReturnAnError(err error) {
r.pipe.errChan <- err
}
// Recover catches an error set by ReturnAnError, if exists.
func (r *Reader) Recover() (err error) {
select {
case err = <-r.pipe.errChan:
default:
}
return
}