v25.1.1

Announcement of NFTs by Project X: https://github.com/XTLS/Xray-core/discussions/3633
Project X NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1

XHTTP: Beyond REALITY: https://github.com/XTLS/Xray-core/discussions/4113
REALITY NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2

.github/workflows/release-win7.yml

@@ -0,0 +1,160 @@
+name: Build and Release for Windows 7
+
+# NOTE: This Github Actions file depends on the Makefile.
+#       Building the correct package requires the correct binaries generated by the Makefile. To 
+#       ensure the correct output, the Makefile must accept the appropriate input and compile the 
+#       correct file with the correct name. If you need to modify this file, please ensure it won't 
+#       disrupt the Makefile.
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  prepare:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Restore Cache
+        uses: actions/cache/restore@v4
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Update Geodat
+        id: update
+        uses: nick-fields/retry@v3
+        with:
+          timeout_minutes: 60
+          retry_wait_seconds: 60
+          max_attempts: 60
+          command: |
+            [ -d 'resources' ] || mkdir resources
+            LIST=('geoip geoip geoip' 'domain-list-community dlc geosite')
+            for i in "${LIST[@]}"
+            do
+              INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3}'))
+              FILE_NAME="${INFO[2]}.dat"
+              echo -e "Verifying HASH key..."
+              HASH="$(curl -sL "https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat.sha256sum" | awk -F ' ' '{print $1}')"
+              if [ -s "./resources/${FILE_NAME}" ] && [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ]; then
+                  continue
+              else
+                  echo -e "Downloading https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat..."
+                  curl -L "https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat" -o ./resources/${FILE_NAME}
+                  echo -e "Verifying HASH key..."
+                  [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ] || { echo -e "The HASH key of ${FILE_NAME} does not match cloud one."; exit 1; }
+                  echo "unhit=true" >> $GITHUB_OUTPUT
+              fi
+            done
+
+      - name: Save Cache
+        uses: actions/cache/save@v4
+        if: ${{ steps.update.outputs.unhit }}
+        with:
+          path: resources
+          key: xray-geodat-${{ github.sha }}-${{ github.run_number }}
+
+  build:
+    needs: prepare
+    permissions:
+      contents: write
+    strategy:
+      matrix:
+        include:
+          # BEGIN Windows 7
+          - goos: windows
+            goarch: amd64
+            assetname: win7-64
+          - goos: windows
+            goarch: 386
+            assetname: win7-32
+          # END Windows 7
+      fail-fast: false
+
+    runs-on: ubuntu-latest
+    env:
+      GOOS: ${{ matrix.goos}}
+      GOARCH: ${{ matrix.goarch }}
+      CGO_ENABLED: 0
+    steps:
+      - name: Show workflow information
+        run: |
+          _NAME=${{ matrix.assetname }}
+          echo "GOOS: ${{ matrix.goos }}, GOARCH: ${{ matrix.goarch }}, RELEASE_NAME: $_NAME"
+          echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: stable
+          check-latest: true
+
+      - name: Setup patched builder
+        run: |
+          GOSDK=$(go env GOROOT)
+          curl -O -L https://github.com/XTLS/go-win7/releases/latest/download/go-for-win7-linux-amd64.zip
+          rm -r $GOSDK/*
+          unzip ./go-for-win7-linux-amd64.zip -d $GOSDK
+
+      - name: Checkout codebase
+        uses: actions/checkout@v4
+
+      - name: Get project dependencies
+        run: go mod download
+
+      - name: Build Xray
+        run: |
+          mkdir -p build_assets
+          make
+          find . -maxdepth 1 -type f -regex './\(wxray\|xray\).exe' -exec mv {} ./build_assets/ \;
+
+      - name: Restore Cache
+        uses: actions/cache/restore@v4
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Copy README.md & LICENSE
+        run: |
+          mv -f resources/* build_assets
+          cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
+          cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
+
+      - name: Create ZIP archive
+        if: github.event_name == 'release'
+        shell: bash
+        run: |
+          pushd build_assets || exit 1
+          touch -mt $(date +%Y01010000) *
+          zip -9vr ../Xray-${{ env.ASSET_NAME }}.zip .
+          popd || exit 1
+          FILE=./Xray-${{ env.ASSET_NAME }}.zip
+          DGST=$FILE.dgst
+          for METHOD in {"md5","sha1","sha256","sha512"}
+          do
+            openssl dgst -$METHOD $FILE | sed 's/([^)]*)//g' >>$DGST
+          done
+
+      - name: Change the name
+        run: |
+          mv build_assets Xray-${{ env.ASSET_NAME }}
+
+      - name: Upload files to Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Xray-${{ env.ASSET_NAME }}
+          path: |
+            ./Xray-${{ env.ASSET_NAME }}/*
+
+      - name: Upload binaries to release
+        uses: svenstaro/upload-release-action@v2
+        if: github.event_name == 'release'
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: ./Xray-${{ env.ASSET_NAME }}.zip*
+          tag: ${{ github.ref }}
+          file_glob: true

.github/workflows/release.yml

@@ -11,20 +11,9 @@ on:
   release:
     types: [published]
   push:
-    branches:
-      - main
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/release.yml"
   pull_request:
     types: [opened, synchronize, reopened]
-    paths:
+
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/release.yml"
 jobs:
   prepare:
     runs-on: ubuntu-latest
@@ -78,9 +67,7 @@ jobs:
         # Include amd64 on all platforms.
         goos: [windows, freebsd, openbsd, linux, darwin]
         goarch: [amd64, 386]
-        gotoolchain: [""]
         patch-assetname: [""]
-
         exclude:
           # Exclude i386 on darwin
           - goarch: 386
@@ -155,16 +142,6 @@ jobs:
             goarch: arm
             goarm: 7
           # END OPENBSD ARM
-          # BEGIN Windows 7
-          - goos: windows
-            goarch: amd64
-            gotoolchain: 1.21.4
-            patch-assetname: win7-64
-          - goos: windows
-            goarch: 386
-            gotoolchain: 1.21.4
-            patch-assetname: win7-32
-          # END Windows 7
       fail-fast: false
 
     runs-on: ubuntu-latest
@@ -187,7 +164,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: ${{ matrix.gotoolchain || '1.23' }}
+          go-version-file: go.mod
           check-latest: true
 
       - name: Get project dependencies

.github/workflows/test.yml

@@ -2,20 +2,8 @@ name: Test
 
 on:
   push:
-    branches:
-      - main
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
   pull_request:
     types: [opened, synchronize, reopened]
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
 
 jobs:
   test:
@@ -32,7 +20,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.23'
+          go-version-file: go.mod
           check-latest: true
       - name: Restore Cache
         uses: actions/cache/restore@v4

README.md

@@ -6,7 +6,9 @@
 
 ## Donation & NFTs
 
-[Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633)
+- **ETH/USDT/USDC: `0xDc3Fe44F0f25D13CACb1C4896CD0D321df3146Ee`**
+- **Project X NFT: [Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633)**
+- **REALITY NFT: [XHTTP: Beyond REALITY](https://github.com/XTLS/Xray-core/discussions/4113)**
 
 ## License
 

app/dispatcher/default.go

@@ -106,7 +106,7 @@ func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		d := new(DefaultDispatcher)
 		if err := core.RequireFeatures(ctx, func(om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager, dc dns.Client) error {
-			core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
+			core.OptionalFeatures(ctx, func(fdns dns.FakeDNSEngine) {
 				d.fdns = fdns
 			})
 			return d.Init(config.(*Config), om, router, pm, sm, dc)

app/dns/nameserver.go

@@ -35,7 +35,7 @@ type Client struct {
 var errExpectedIPNonMatch = errors.New("expectIPs not match")
 
 // NewServer creates a name server object according to the network destination url.
-func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (Server, error) {
+func NewServer(ctx context.Context, dest net.Destination, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (Server, error) {
 	if address := dest.Address; address.Family().IsDomain() {
 		u, err := url.Parse(address.Domain())
 		if err != nil {
@@ -55,7 +55,11 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 		case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
 			return NewTCPLocalNameServer(u, queryStrategy)
 		case strings.EqualFold(u.String(), "fakedns"):
-			return NewFakeDNSServer(), nil
+			var fd dns.FakeDNSEngine
+			core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
+				fd = fdns
+			})
+			return NewFakeDNSServer(fd), nil
 		}
 	}
 	if dest.Network == net.Network_Unknown {
@@ -80,7 +84,7 @@ func NewClient(
 
 	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
 		// Create a new server for each client for now
-		server, err := NewServer(ns.Address.AsDestination(), dispatcher, ns.GetQueryStrategy())
+		server, err := NewServer(ctx, ns.Address.AsDestination(), dispatcher, ns.GetQueryStrategy())
 		if err != nil {
 			return errors.New("failed to create nameserver").Base(err).AtWarning()
 		}

app/dns/nameserver_doh.go

@@ -8,7 +8,6 @@ import (
 	"net/http"
 	"net/url"
 	"sync"
-	"sync/atomic"
 	"time"
 
 	"github.com/xtls/xray-core/common"
@@ -35,7 +34,6 @@ type DoHNameServer struct {
 	ips           map[string]*record
 	pub           *pubsub.Service
 	cleanup       *task.Periodic
-	reqID         uint32
 	httpClient    *http.Client
 	dohURL        string
 	name          string
@@ -222,7 +220,7 @@ func (s *DoHNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 }
 
 func (s *DoHNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
+	return 0
 }
 
 func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {

app/dns/nameserver_fakedns.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 )
 
@@ -13,8 +12,8 @@ type FakeDNSServer struct {
 	fakeDNSEngine dns.FakeDNSEngine
 }
 
-func NewFakeDNSServer() *FakeDNSServer {
+func NewFakeDNSServer(fd dns.FakeDNSEngine) *FakeDNSServer {
-	return &FakeDNSServer{}
+	return &FakeDNSServer{fakeDNSEngine: fd}
 }
 
 func (FakeDNSServer) Name() string {
@@ -23,12 +22,9 @@ func (FakeDNSServer) Name() string {
 
 func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, opt dns.IPOption, _ bool) ([]net.IP, error) {
 	if f.fakeDNSEngine == nil {
-		if err := core.RequireFeatures(ctx, func(fd dns.FakeDNSEngine) {
+		return nil, errors.New("Unable to locate a fake DNS Engine").AtError()
-			f.fakeDNSEngine = fd
-		}); err != nil {
-			return nil, errors.New("Unable to locate a fake DNS Engine").Base(err).AtError()
-		}
 	}
+
 	var ips []net.Address
 	if fkr0, ok := f.fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
 		ips = fkr0.GetFakeIPForDomain3(domain, opt.IPv4Enable, opt.IPv6Enable)

app/dns/nameserver_quic.go

@@ -6,10 +6,9 @@ import (
 	"encoding/binary"
 	"net/url"
 	"sync"
-	"sync/atomic"
 	"time"
 
-	"github.com/quic-go/quic-go"
+	"github.com/xtls/quic-go"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
@@ -37,7 +36,6 @@ type QUICNameServer struct {
 	ips           map[string]*record
 	pub           *pubsub.Service
 	cleanup       *task.Periodic
-	reqID         uint32
 	name          string
 	destination   *net.Destination
 	connection    quic.Connection
@@ -156,7 +154,7 @@ func (s *QUICNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 }
 
 func (s *QUICNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
+	return 0
 }
 
 func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {

app/observatory/burst/burstobserver.go

@@ -12,6 +12,7 @@ import (
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
+	"github.com/xtls/xray-core/features/routing"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -88,13 +89,15 @@ func (o *Observer) Close() error {
 
 func New(ctx context.Context, config *Config) (*Observer, error) {
 	var outboundManager outbound.Manager
-	err := core.RequireFeatures(ctx, func(om outbound.Manager) {
+	var dispatcher routing.Dispatcher
+	err := core.RequireFeatures(ctx, func(om outbound.Manager, rd routing.Dispatcher) {
 		outboundManager = om
+		dispatcher = rd
 	})
 	if err != nil {
 		return nil, errors.New("Cannot get depended features").Base(err)
 	}
-	hp := NewHealthPing(ctx, config.PingConfig)
+	hp := NewHealthPing(ctx, dispatcher, config.PingConfig)
 	return &Observer{
 		config: config,
 		ctx:    ctx,

app/observatory/burst/healthping.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/xtls/xray-core/common/dice"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/features/routing"
 )
 
 // HealthPingSettings holds settings for health Checker
@@ -23,6 +24,7 @@ type HealthPingSettings struct {
 // HealthPing is the health checker for balancers
 type HealthPing struct {
 	ctx         context.Context
+	dispatcher  routing.Dispatcher
 	access      sync.Mutex
 	ticker      *time.Ticker
 	tickerClose chan struct{}
@@ -32,7 +34,7 @@ type HealthPing struct {
 }
 
 // NewHealthPing creates a new HealthPing with settings
-func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
+func NewHealthPing(ctx context.Context, dispatcher routing.Dispatcher, config *HealthPingConfig) *HealthPing {
 	settings := &HealthPingSettings{}
 	if config != nil {
 		settings = &HealthPingSettings{
@@ -65,6 +67,7 @@ func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
 	}
 	return &HealthPing{
 		ctx:      ctx,
+		dispatcher: dispatcher,
 		Settings: settings,
 		Results:  nil,
 	}
@@ -149,6 +152,7 @@ func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int)
 		handler := tag
 		client := newPingClient(
 			h.ctx,
+			h.dispatcher,
 			h.Settings.Destination,
 			h.Settings.Timeout,
 			handler,

app/observatory/burst/ping.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/tagged"
 )
 
@@ -14,10 +15,10 @@ type pingClient struct {
 	httpClient  *http.Client
 }
 
-func newPingClient(ctx context.Context, destination string, timeout time.Duration, handler string) *pingClient {
+func newPingClient(ctx context.Context, dispatcher routing.Dispatcher, destination string, timeout time.Duration, handler string) *pingClient {
 	return &pingClient{
 		destination: destination,
-		httpClient:  newHTTPClient(ctx, handler, timeout),
+		httpClient:  newHTTPClient(ctx, dispatcher, handler, timeout),
 	}
 }
 
@@ -28,7 +29,7 @@ func newDirectPingClient(destination string, timeout time.Duration) *pingClient
 	}
 }
 
-func newHTTPClient(ctxv context.Context, handler string, timeout time.Duration) *http.Client {
+func newHTTPClient(ctxv context.Context, dispatcher routing.Dispatcher, handler string, timeout time.Duration) *http.Client {
 	tr := &http.Transport{
 		DisableKeepAlives: true,
 		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
@@ -36,7 +37,7 @@ func newHTTPClient(ctxv context.Context, handler string, timeout time.Duration)
 			if err != nil {
 				return nil, err
 			}
-			return tagged.Dialer(ctxv, dest, handler)
+			return tagged.Dialer(ctxv, dispatcher, dest, handler)
 		},
 	}
 	return &http.Client{

app/observatory/command/command.go

@@ -38,7 +38,7 @@ func init() {
 		sv := &service{v: s}
 		err := s.RequireFeatures(func(Observatory extension.Observatory) {
 			sv.observatory = Observatory
-		})
+		}, false)
 		if err != nil {
 			return nil, err
 		}

app/observatory/observer.go

@@ -18,6 +18,7 @@ import (
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
+	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/tagged"
 	"google.golang.org/protobuf/proto"
 )
@@ -32,6 +33,7 @@ type Observer struct {
 	finished *done.Instance
 
 	ohm outbound.Manager
+	dispatcher routing.Dispatcher
 }
 
 func (o *Observer) GetObservation(ctx context.Context) (proto.Message, error) {
@@ -131,7 +133,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 					return errors.New("cannot understand address").Base(err)
 				}
 				trackedCtx := session.TrackedConnectionError(o.ctx, errorCollectorForRequest)
-				conn, err := tagged.Dialer(trackedCtx, dest, outbound)
+				conn, err := tagged.Dialer(trackedCtx, o.dispatcher, dest, outbound)
 				if err != nil {
 					return errors.New("cannot dial remote address ", dest).Base(err)
 				}
@@ -215,8 +217,10 @@ func (o *Observer) findStatusLocationLockHolderOnly(outbound string) int {
 
 func New(ctx context.Context, config *Config) (*Observer, error) {
 	var outboundManager outbound.Manager
-	err := core.RequireFeatures(ctx, func(om outbound.Manager) {
+	var dispatcher routing.Dispatcher
+	err := core.RequireFeatures(ctx, func(om outbound.Manager, rd routing.Dispatcher) {
 		outboundManager = om
+		dispatcher = rd
 	})
 	if err != nil {
 		return nil, errors.New("Cannot get depended features").Base(err)
@@ -225,6 +229,7 @@ func New(ctx context.Context, config *Config) (*Observer, error) {
 		config: config,
 		ctx:    ctx,
 		ohm:    outboundManager,
+		dispatcher: dispatcher,
 	}, nil
 }
 

app/proxyman/command/command.go

@@ -177,7 +177,7 @@ func (s *service) Register(server *grpc.Server) {
 	common.Must(s.v.RequireFeatures(func(im inbound.Manager, om outbound.Manager) {
 		hs.ihm = im
 		hs.ohm = om
-	}))
+	}, false))
 	RegisterHandlerServiceServer(server, hs)
 
 	// For compatibility purposes

app/proxyman/inbound/inbound.go

@@ -7,6 +7,7 @@ import (
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
@@ -158,6 +159,9 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 			Mark: streamSettings.SocketSettings.Mark,
 		})
 	}
+	if streamSettings != nil && streamSettings.ProtocolName == "splithttp" {
+		ctx = session.ContextWithAllowedNetwork(ctx, net.Network_UDP)
+	}
 
 	allocStrategy := receiverSettings.AllocationStrategy
 	if allocStrategy == nil || allocStrategy.Type == proxyman.AllocationStrategy_Always {

app/router/balancing.go

@@ -31,6 +31,12 @@ type RoundRobinStrategy struct {
 
 func (s *RoundRobinStrategy) InjectContext(ctx context.Context) {
 	s.ctx = ctx
+	if len(s.FallbackTag) > 0 {
+		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
+			s.observatory = observatory
+			return nil
+		}))
+	}
 }
 
 func (s *RoundRobinStrategy) GetPrincipleTarget(strings []string) []string {
@@ -38,12 +44,6 @@ func (s *RoundRobinStrategy) GetPrincipleTarget(strings []string) []string {
 }
 
 func (s *RoundRobinStrategy) PickOutbound(tags []string) string {
-	if len(s.FallbackTag) > 0 && s.observatory == nil {
-		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
-			s.observatory = observatory
-			return nil
-		}))
-	}
 	if s.observatory != nil {
 		observeReport, err := s.observatory.GetObservation(s.ctx)
 		if err == nil {

app/router/command/command.go

@@ -135,7 +135,7 @@ func (s *service) Register(server *grpc.Server) {
 		vCoreDesc := RoutingService_ServiceDesc
 		vCoreDesc.ServiceName = "v2ray.core.app.router.command.RoutingService"
 		server.RegisterService(&vCoreDesc, rs)
-	}))
+	}, false))
 }
 
 func init() {

app/router/condition_geoip_test.go

@@ -1,6 +1,7 @@
 package router_test
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 	"testing"
@@ -13,16 +14,25 @@ import (
 	"google.golang.org/protobuf/proto"
 )
 
-func init() {
+func getAssetPath(file string) (string, error) {
-	wd, err := os.Getwd()
+	path := platform.GetAssetLocation(file)
-	common.Must(err)
+	_, err := os.Stat(path)
+	if os.IsNotExist(err) {
+		path := filepath.Join("..", "..", "resources", file)
+		_, err := os.Stat(path)
+		if os.IsNotExist(err) {
+			return "", fmt.Errorf("can't find %s in standard asset locations or {project_root}/resources", file)
+		}
+		if err != nil {
+			return "", fmt.Errorf("can't stat %s: %v", path, err)
+		}
+		return path, nil
+	}
+	if err != nil {
+		return "", fmt.Errorf("can't stat %s: %v", path, err)
+	}
 
-	if _, err := os.Stat(platform.GetAssetLocation("geoip.dat")); err != nil && os.IsNotExist(err) {
+	return path, nil
-		common.Must(filesystem.CopyFile(platform.GetAssetLocation("geoip.dat"), filepath.Join(wd, "..", "..", "resources", "geoip.dat")))
-	}
-	if _, err := os.Stat(platform.GetAssetLocation("geosite.dat")); err != nil && os.IsNotExist(err) {
-		common.Must(filesystem.CopyFile(platform.GetAssetLocation("geosite.dat"), filepath.Join(wd, "..", "..", "resources", "geosite.dat")))
-	}
 }
 
 func TestGeoIPMatcherContainer(t *testing.T) {
@@ -217,10 +227,15 @@ func TestGeoIPMatcher6US(t *testing.T) {
 }
 
 func loadGeoIP(country string) ([]*router.CIDR, error) {
-	geoipBytes, err := filesystem.ReadAsset("geoip.dat")
+	path, err := getAssetPath("geoip.dat")
 	if err != nil {
 		return nil, err
 	}
+	geoipBytes, err := filesystem.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
 	var geoipList router.GeoIPList
 	if err := proto.Unmarshal(geoipBytes, &geoipList); err != nil {
 		return nil, err

app/router/condition_test.go

@@ -1,8 +1,6 @@
 package router_test
 
 import (
-	"os"
-	"path/filepath"
 	"strconv"
 	"testing"
 
@@ -10,7 +8,6 @@ import (
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/platform/filesystem"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/protocol/http"
@@ -20,18 +17,6 @@ import (
 	"google.golang.org/protobuf/proto"
 )
 
-func init() {
-	wd, err := os.Getwd()
-	common.Must(err)
-
-	if _, err := os.Stat(platform.GetAssetLocation("geoip.dat")); err != nil && os.IsNotExist(err) {
-		common.Must(filesystem.CopyFile(platform.GetAssetLocation("geoip.dat"), filepath.Join(wd, "..", "..", "release", "config", "geoip.dat")))
-	}
-	if _, err := os.Stat(platform.GetAssetLocation("geosite.dat")); err != nil && os.IsNotExist(err) {
-		common.Must(filesystem.CopyFile(platform.GetAssetLocation("geosite.dat"), filepath.Join(wd, "..", "..", "release", "config", "geosite.dat")))
-	}
-}
-
 func withBackground() routing.Context {
 	return &routing_session.Context{}
 }
@@ -316,10 +301,15 @@ func TestRoutingRule(t *testing.T) {
 }
 
 func loadGeoSite(country string) ([]*Domain, error) {
-	geositeBytes, err := filesystem.ReadAsset("geosite.dat")
+	path, err := getAssetPath("geosite.dat")
 	if err != nil {
 		return nil, err
 	}
+	geositeBytes, err := filesystem.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
 	var geositeList GeoSiteList
 	if err := proto.Unmarshal(geositeBytes, &geositeList); err != nil {
 		return nil, err

app/router/strategy_leastload.go

@@ -58,8 +58,12 @@ type node struct {
 	RTTDeviationCost time.Duration
 }
 
-func (l *LeastLoadStrategy) InjectContext(ctx context.Context) {
+func (s *LeastLoadStrategy) InjectContext(ctx context.Context) {
-	l.ctx = ctx
+	s.ctx = ctx
+	common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
+		s.observer = observatory
+		return nil
+	}))
 }
 
 func (s *LeastLoadStrategy) PickOutbound(candidates []string) string {
@@ -136,10 +140,8 @@ func (s *LeastLoadStrategy) selectLeastLoad(nodes []*node) []*node {
 
 func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration) []*node {
 	if s.observer == nil {
-		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
+		errors.LogError(s.ctx, "observer is nil")
-			s.observer = observatory
+		return make([]*node, 0)
-			return nil
-		}))
 	}
 	observeResult, err := s.observer.GetObservation(s.ctx)
 	if err != nil {

app/router/strategy_leastping.go

@@ -21,19 +21,20 @@ func (l *LeastPingStrategy) GetPrincipleTarget(strings []string) []string {
 
 func (l *LeastPingStrategy) InjectContext(ctx context.Context) {
 	l.ctx = ctx
+	common.Must(core.RequireFeatures(l.ctx, func(observatory extension.Observatory) error {
+		l.observatory = observatory
+		return nil
+	}))
 }
 
 func (l *LeastPingStrategy) PickOutbound(strings []string) string {
 	if l.observatory == nil {
-		common.Must(core.RequireFeatures(l.ctx, func(observatory extension.Observatory) error {
+		errors.LogError(l.ctx, "observer is nil")
-			l.observatory = observatory
+		return ""
-			return nil
-		}))
 	}
-
 	observeReport, err := l.observatory.GetObservation(l.ctx)
 	if err != nil {
-		errors.LogInfoInner(l.ctx, err, "cannot get observe report")
+		errors.LogInfoInner(l.ctx, err, "cannot get observer report")
 		return ""
 	}
 	outboundsList := outboundList(strings)

app/router/strategy_random.go

@@ -20,6 +20,12 @@ type RandomStrategy struct {
 
 func (s *RandomStrategy) InjectContext(ctx context.Context) {
 	s.ctx = ctx
+	if len(s.FallbackTag) > 0 {
+		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
+			s.observatory = observatory
+			return nil
+		}))
+	}
 }
 
 func (s *RandomStrategy) GetPrincipleTarget(strings []string) []string {
@@ -27,12 +33,6 @@ func (s *RandomStrategy) GetPrincipleTarget(strings []string) []string {
 }
 
 func (s *RandomStrategy) PickOutbound(candidates []string) string {
-	if len(s.FallbackTag) > 0 && s.observatory == nil {
-		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
-			s.observatory = observatory
-			return nil
-		}))
-	}
 	if s.observatory != nil {
 		observeReport, err := s.observatory.GetObservation(s.ctx)
 		if err == nil {

common/common.go

@@ -38,7 +38,7 @@ func Error2(v interface{}, err error) error {
 func envFile() (string, error) {
 	if file := os.Getenv("GOENV"); file != "" {
 		if file == "off" {
-			return "", fmt.Errorf("GOENV=off")
+			return "", errors.New("GOENV=off")
 		}
 		return file, nil
 	}
@@ -47,7 +47,7 @@ func envFile() (string, error) {
 		return "", err
 	}
 	if dir == "" {
-		return "", fmt.Errorf("missing user-config dir")
+		return "", errors.New("missing user-config dir")
 	}
 	return filepath.Join(dir, "go", "env"), nil
 }
@@ -60,7 +60,7 @@ func GetRuntimeEnv(key string) (string, error) {
 		return "", err
 	}
 	if file == "" {
-		return "", fmt.Errorf("missing runtime env file")
+		return "", errors.New("missing runtime env file")
 	}
 	var data []byte
 	var runtimeEnv string

common/protocol/quic/sniff.go

@@ -8,7 +8,7 @@ import (
 	"encoding/binary"
 	"io"
 
-	"github.com/quic-go/quic-go/quicvarint"
+	"github.com/xtls/quic-go/quicvarint"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/bytespool"

common/reflect/marshal.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"reflect"
+	"slices"
 	"strings"
 
 	cnet "github.com/xtls/xray-core/common/net"
@@ -31,9 +32,6 @@ func JSONMarshalWithoutEscape(t interface{}) ([]byte, error) {
 }
 
 func marshalTypedMessage(v *cserial.TypedMessage, ignoreNullValue bool, insertTypeInfo bool) interface{} {
-	if v == nil {
-		return nil
-	}
 	tmsg, err := v.GetInstance()
 	if err != nil {
 		return nil
@@ -194,29 +192,28 @@ func marshalKnownType(v interface{}, ignoreNullValue bool, insertTypeInfo bool)
 	}
 }
 
+var valueKinds = []reflect.Kind{
+	reflect.Bool,
+	reflect.Int,
+	reflect.Int8,
+	reflect.Int16,
+	reflect.Int32,
+	reflect.Int64,
+	reflect.Uint,
+	reflect.Uint8,
+	reflect.Uint16,
+	reflect.Uint32,
+	reflect.Uint64,
+	reflect.Uintptr,
+	reflect.Float32,
+	reflect.Float64,
+	reflect.Complex64,
+	reflect.Complex128,
+	reflect.String,
+}
+
 func isValueKind(kind reflect.Kind) bool {
-	switch kind {
+	return slices.Contains(valueKinds, kind)
-	case reflect.Bool,
-		reflect.Int,
-		reflect.Int8,
-		reflect.Int16,
-		reflect.Int32,
-		reflect.Int64,
-		reflect.Uint,
-		reflect.Uint8,
-		reflect.Uint16,
-		reflect.Uint32,
-		reflect.Uint64,
-		reflect.Uintptr,
-		reflect.Float32,
-		reflect.Float64,
-		reflect.Complex64,
-		reflect.Complex128,
-		reflect.String:
-		return true
-	default:
-		return false
-	}
 }
 
 func marshalInterface(v interface{}, ignoreNullValue bool, insertTypeInfo bool) interface{} {

common/reflect/marshal_test.go

@@ -204,9 +204,7 @@ func getConfig() string {
 			  "security": "none",
 			  "wsSettings": {
 				"path": "/?ed=2048",
-				"headers": {
+				"host": "bing.com"
-				  "Host": "bing.com"
-				}
 			  }
 			}
 		  }

core/config.go

@@ -2,6 +2,7 @@ package core
 
 import (
 	"io"
+	"slices"
 	"strings"
 
 	"github.com/xtls/xray-core/common"
@@ -64,14 +65,11 @@ func GetMergedConfig(args cmdarg.Arg) (string, error) {
 	supported := []string{"json", "yaml", "toml"}
 	for _, file := range args {
 		format := getFormat(file)
-		for _, s := range supported {
+		if slices.Contains(supported, format) {
-			if s == format {
+			files = append(files, &ConfigSource{
-				files = append(files, &ConfigSource{
+				Name:   file,
-					Name:   file,
+				Format: format,
-					Format: format,
+			})
-				})
-				break
-			}
 		}
 	}
 	return ConfigMergedFormFiles(files)

core/core.go

@@ -17,9 +17,9 @@ import (
 )
 
 var (
-	Version_x byte = 24
+	Version_x byte = 25
-	Version_y byte = 11
+	Version_y byte = 1
-	Version_z byte = 21
+	Version_z byte = 1
 )
 
 var (

core/xray.go

@@ -44,22 +44,13 @@ func getFeature(allFeatures []features.Feature, t reflect.Type) features.Feature
 	return nil
 }
 
-func (r *resolution) resolve(allFeatures []features.Feature) (bool, error) {
+func (r *resolution) callbackResolution(allFeatures []features.Feature) error {
-	var fs []features.Feature
-	for _, d := range r.deps {
-		f := getFeature(allFeatures, d)
-		if f == nil {
-			return false, nil
-		}
-		fs = append(fs, f)
-	}
-
 	callback := reflect.ValueOf(r.callback)
 	var input []reflect.Value
 	callbackType := callback.Type()
 	for i := 0; i < callbackType.NumIn(); i++ {
 		pt := callbackType.In(i)
-		for _, f := range fs {
+		for _, f := range allFeatures {
 			if reflect.TypeOf(f).AssignableTo(pt) {
 				input = append(input, reflect.ValueOf(f))
 				break
@@ -84,15 +75,17 @@ func (r *resolution) resolve(allFeatures []features.Feature) (bool, error) {
 		}
 	}
 
-	return true, err
+	return err
 }
 
 // Instance combines all Xray features.
 type Instance struct {
-	access             sync.Mutex
+	statusLock                 sync.Mutex
-	features           []features.Feature
+	features                   []features.Feature
-	featureResolutions []resolution
+	pendingResolutions         []resolution
-	running            bool
+	pendingOptionalResolutions []resolution
+	running                    bool
+	resolveLock                sync.Mutex
 
 	ctx context.Context
 }
@@ -153,7 +146,14 @@ func addOutboundHandlers(server *Instance, configs []*OutboundHandlerConfig) err
 // See Instance.RequireFeatures for more information.
 func RequireFeatures(ctx context.Context, callback interface{}) error {
 	v := MustFromContext(ctx)
-	return v.RequireFeatures(callback)
+	return v.RequireFeatures(callback, false)
+}
+
+// OptionalFeatures is a helper function to aquire features from Instance in context.
+// See Instance.RequireFeatures for more information.
+func OptionalFeatures(ctx context.Context, callback interface{}) error {
+	v := MustFromContext(ctx)
+	return v.RequireFeatures(callback, true)
 }
 
 // New returns a new Xray instance based on given configuration.
@@ -227,9 +227,12 @@ func initInstanceWithConfig(config *Config, server *Instance) (bool, error) {
 		}(),
 	)
 
-	if server.featureResolutions != nil {
+	server.resolveLock.Lock()
+	if server.pendingResolutions != nil {
+		server.resolveLock.Unlock()
 		return true, errors.New("not all dependencies are resolved.")
 	}
+	server.resolveLock.Unlock()
 
 	if err := addInboundHandlers(server, config.Inbound); err != nil {
 		return true, err
@@ -248,8 +251,8 @@ func (s *Instance) Type() interface{} {
 
 // Close shutdown the Xray instance.
 func (s *Instance) Close() error {
-	s.access.Lock()
+	s.statusLock.Lock()
-	defer s.access.Unlock()
+	defer s.statusLock.Unlock()
 
 	s.running = false
 
@@ -268,7 +271,7 @@ func (s *Instance) Close() error {
 
 // RequireFeatures registers a callback, which will be called when all dependent features are registered.
 // The callback must be a func(). All its parameters must be features.Feature.
-func (s *Instance) RequireFeatures(callback interface{}) error {
+func (s *Instance) RequireFeatures(callback interface{}, optional bool) error {
 	callbackType := reflect.TypeOf(callback)
 	if callbackType.Kind() != reflect.Func {
 		panic("not a function")
@@ -283,17 +286,32 @@ func (s *Instance) RequireFeatures(callback interface{}) error {
 		deps:     featureTypes,
 		callback: callback,
 	}
-	if finished, err := r.resolve(s.features); finished {
+
-		return err
+	s.resolveLock.Lock()
+	foundAll := true
+	for _, d := range r.deps {
+		f := getFeature(s.features, d)
+		if f == nil {
+			foundAll = false
+			break
+		}
+	}
+	if foundAll {
+		s.resolveLock.Unlock()
+		return r.callbackResolution(s.features)
+	} else {
+		if optional {
+			s.pendingOptionalResolutions = append(s.pendingOptionalResolutions, r)
+		} else {
+			s.pendingResolutions = append(s.pendingResolutions, r)
+		}
+		s.resolveLock.Unlock()
+		return nil
 	}
-	s.featureResolutions = append(s.featureResolutions, r)
-	return nil
 }
 
 // AddFeature registers a feature into current Instance.
 func (s *Instance) AddFeature(feature features.Feature) error {
-	s.features = append(s.features, feature)
-
 	if s.running {
 		if err := feature.Start(); err != nil {
 			errors.LogInfoInner(s.ctx, err, "failed to start feature")
@@ -301,27 +319,52 @@ func (s *Instance) AddFeature(feature features.Feature) error {
 		return nil
 	}
 
-	if s.featureResolutions == nil {
+	s.resolveLock.Lock()
-		return nil
+	s.features = append(s.features, feature)
-	}
 
-	var pendingResolutions []resolution
+	var availableResolution []resolution
-	for _, r := range s.featureResolutions {
+	var pending []resolution
-		finished, err := r.resolve(s.features)
+	for _, r := range s.pendingResolutions {
-		if finished && err != nil {
+		foundAll := true
-			return err
+		for _, d := range r.deps {
+			f := getFeature(s.features, d)
+			if f == nil {
+				foundAll = false
+				break
+			}
 		}
-		if !finished {
+		if foundAll {
-			pendingResolutions = append(pendingResolutions, r)
+			availableResolution = append(availableResolution, r)
+		} else {
+			pending = append(pending, r)
 		}
 	}
-	if len(pendingResolutions) == 0 {
+	s.pendingResolutions = pending
-		s.featureResolutions = nil
-	} else if len(pendingResolutions) < len(s.featureResolutions) {
-		s.featureResolutions = pendingResolutions
-	}
 
-	return nil
+	var pendingOptional []resolution
+	for _, r := range s.pendingOptionalResolutions {
+		foundAll := true
+		for _, d := range r.deps {
+			f := getFeature(s.features, d)
+			if f == nil {
+				foundAll = false
+				break
+			}
+		}
+		if foundAll {
+			availableResolution = append(availableResolution, r)
+		} else {
+			pendingOptional = append(pendingOptional, r)
+		}
+	}
+	s.pendingOptionalResolutions = pendingOptional
+	s.resolveLock.Unlock()
+	
+	var err error
+	for _, r := range availableResolution {
+		err = r.callbackResolution(s.features) // only return the last error for now
+	}
+	return err
 }
 
 // GetFeature returns a feature of the given type, or nil if such feature is not registered.
@@ -334,8 +377,8 @@ func (s *Instance) GetFeature(featureType interface{}) features.Feature {
 //
 // xray:api:stable
 func (s *Instance) Start() error {
-	s.access.Lock()
+	s.statusLock.Lock()
-	defer s.access.Unlock()
+	defer s.statusLock.Unlock()
 
 	s.running = true
 	for _, f := range s.features {

core/xray_test.go

@@ -30,7 +30,7 @@ func TestXrayDependency(t *testing.T) {
 			t.Error("expected dns client fulfilled, but actually nil")
 		}
 		wait <- true
-	})
+	}, false)
 	instance.AddFeature(localdns.New())
 	<-wait
 }

go.mod

@@ -1,10 +1,10 @@
 module github.com/xtls/xray-core
 
-go 1.21.4
+go 1.23
 
 require (
 	github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0
-	github.com/cloudflare/circl v1.4.0
+	github.com/cloudflare/circl v1.5.0
 	github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344
 	github.com/golang/mock v1.7.0-rc.1
 	github.com/google/go-cmp v0.6.0
@@ -12,23 +12,23 @@ require (
 	github.com/miekg/dns v1.1.62
 	github.com/pelletier/go-toml v1.9.5
 	github.com/pires/go-proxyproto v0.8.0
-	github.com/quic-go/quic-go v0.46.0
 	github.com/refraction-networking/utls v1.6.7
 	github.com/sagernet/sing v0.5.1
 	github.com/sagernet/sing-shadowsocks v0.2.7
 	github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771
-	github.com/stretchr/testify v1.9.0
+	github.com/stretchr/testify v1.10.0
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
 	github.com/vishvananda/netlink v1.3.0
+	github.com/xtls/quic-go v0.48.2
 	github.com/xtls/reality v0.0.0-20240712055506-48f0b2d5ed6d
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
-	golang.org/x/crypto v0.29.0
+	golang.org/x/crypto v0.31.0
-	golang.org/x/net v0.31.0
+	golang.org/x/net v0.33.0
-	golang.org/x/sync v0.9.0
+	golang.org/x/sync v0.10.0
-	golang.org/x/sys v0.27.0
+	golang.org/x/sys v0.28.0
 	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
-	google.golang.org/grpc v1.67.1
+	google.golang.org/grpc v1.69.2
-	google.golang.org/protobuf v1.35.2
+	google.golang.org/protobuf v1.36.1
 	gvisor.dev/gvisor v0.0.0-20231202080848-1f7806d17489
 	h12.io/socks v1.0.3
 	lukechampine.com/blake3 v1.3.0
@@ -45,17 +45,17 @@ require (
 	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
 	github.com/onsi/ginkgo/v2 v2.19.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/quic-go/qpack v0.4.0 // indirect
+	github.com/quic-go/qpack v0.5.1 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
 	github.com/vishvananda/netns v0.0.4 // indirect
 	go.uber.org/mock v0.4.0 // indirect
 	golang.org/x/exp v0.0.0-20240531132922-fd00a4e0eefc // indirect
 	golang.org/x/mod v0.18.0 // indirect
-	golang.org/x/text v0.20.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
 	golang.org/x/tools v0.22.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240814211410-ddb44dafa142 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20241015192408-796eee8c2d53 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -2,8 +2,8 @@ github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0 h1:Wo41lDOevRJS
 github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0/go.mod h1:FVGavL/QEBQDcBpr3fAojoK17xX5k9bicBphrOpP7uM=
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 github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY=
-github.com/cloudflare/circl v1.4.0 h1:BV7h5MgrktNzytKmWjpOtdYrf0lkkbF8YMlBGPhJQrY=
+github.com/cloudflare/circl v1.5.0 h1:hxIWksrX6XN5a1L2TI/h53AGPhNHoUBo+TD1ms9+pys=
-github.com/cloudflare/circl v1.4.0/go.mod h1:PDRU+oXvdD7KCtgKxW95M5Z8BpSCJXQORiZFnBQS5QU=
+github.com/cloudflare/circl v1.5.0/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
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@@ -12,18 +12,24 @@ github.com/dgryski/go-metro v0.0.0-20211217172704-adc40b04c140 h1:y7y0Oa6UawqTFP
 github.com/dgryski/go-metro v0.0.0-20211217172704-adc40b04c140/go.mod h1:c9O8+fpSOX1DM8cPNSkX/qsBWdkD4yd2dpciOWQjpBw=
 github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344 h1:Arcl6UOIS/kgO2nW3A65HN+7CMjSDP/gofXL4CZt1V4=
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+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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@@ -46,10 +52,8 @@ github.com/pires/go-proxyproto v0.8.0 h1:5unRmEAPbHXHuLjDg01CxJWf91cw3lKHc/0xzKp
 github.com/pires/go-proxyproto v0.8.0/go.mod h1:iknsfgnH8EkjrMeMyvfKByp9TiBZCKZM0jx2xmKqnVY=
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-github.com/quic-go/qpack v0.4.0 h1:Cr9BXA1sQS2SmDUWjSofMPNKmvF6IiIfDRmgU0w1ZCo=
+github.com/quic-go/qpack v0.5.1 h1:giqksBPnT/HDtZ6VhtFKgoLOWmlyo9Ei6u9PqzIMbhI=
-github.com/quic-go/qpack v0.4.0/go.mod h1:UZVnYIfi5GRk+zI9UMaCPsmZ2xKJP7XBUvVyT1Knj9A=
+github.com/quic-go/qpack v0.5.1/go.mod h1:+PC4XFrEskIVkcLzpEkbLqq1uCoxPhQuvK5rH1ZgaEg=
-github.com/quic-go/quic-go v0.46.0 h1:uuwLClEEyk1DNvchH8uCByQVjo3yKL9opKulExNDs7Y=
-github.com/quic-go/quic-go v0.46.0/go.mod h1:1dLehS7TIR64+vxGR70GDcatWTOtMX2PUtnKsjbTurI=
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 github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 h1:f/FNXud6gA3MNr8meMVVGxhp+QBTqY91tM8HjEuMjGg=
@@ -62,25 +66,37 @@ github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771 h1:emzAzMZ1
 github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771/go.mod h1:bR6DqgcAl1zTcOX8/pE2Qkj9XO00eCNqmKb7lXP8EAg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e h1:5QefA066A1tF8gHIiADmOVOV5LS43gt3ONnlEl3xkwI=
 github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e/go.mod h1:5t19P9LBIrNamL6AcMQOncg/r10y3Pc01AbHeMhwlpU=
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+go.opentelemetry.io/otel v1.31.0 h1:NsJcKPIW0D0H3NgzPDHmo0WW6SptzPdqg/L1zsIm2hY=
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+go.opentelemetry.io/otel/metric v1.31.0 h1:FSErL0ATQAmYHUIzSezZibnyVlft1ybhy4ozRPcF2fE=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.29.0 h1:L5SG1JTTXupVV3n6sUqMTeWbjAyfPwoda2DLX8J8FrQ=
+golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
-golang.org/x/crypto v0.29.0/go.mod h1:+F4F4N5hv6v38hfeYwTdx20oUvLLc+QfrE9Ax9HtgRg=
+golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
 golang.org/x/exp v0.0.0-20240531132922-fd00a4e0eefc h1:O9NuF4s+E/PvMIy+9IUZB9znFwUIXEWSstNjek6VpVg=
 golang.org/x/exp v0.0.0-20240531132922-fd00a4e0eefc/go.mod h1:XtvwrStGgqGPLc4cjQfWqZHG1YFdYs6swckp8vpsjnc=
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@@ -89,12 +105,12 @@ golang.org/x/mod v0.18.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.31.0 h1:68CPQngjLL0r2AlUKiSxtQFKvzRVbnzLwMUn5SzcLHo=
+golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
-golang.org/x/net v0.31.0/go.mod h1:P4fl1q7dY2hnZFxEk4pPSkDHF+QqjitcnDjUQyMM+pM=
+golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
+golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
-golang.org/x/sync v0.9.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -103,14 +119,14 @@ golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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-golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
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-golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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-golang.org/x/text v0.20.0 h1:gK/Kv2otX8gz+wn7Rmb3vT96ZwuoxnQlY+HlJVj7Qug=
+golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
-golang.org/x/text v0.20.0/go.mod h1:D4IsuqiFMhST5bX19pQ9ikHC2GsaKyk/oF+pn3ducp4=
+golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
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@@ -125,12 +141,12 @@ golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeu
 golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
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 golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173/go.mod h1:tkCQ4FQXmpAgYVh++1cq16/dH4QJtmvpRv19DWGAHSA=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240814211410-ddb44dafa142 h1:e7S5W7MGGLaSu8j3YjdezkZ+m1/Nm0uRVRMEMGk26Xs=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20241015192408-796eee8c2d53 h1:X58yt85/IXCx0Y3ZwN6sEIKZzQtDEYaBWrDvErdXrRE=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240814211410-ddb44dafa142/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20241015192408-796eee8c2d53/go.mod h1:GX3210XPVPUjJbTUbvwI8f2IpZDMZuPJWDzDuebbviI=
-google.golang.org/grpc v1.67.1 h1:zWnc1Vrcno+lHZCOofnIMvycFcc0QRGIzm9dhnDX68E=
+google.golang.org/grpc v1.69.2 h1:U3S9QEtbXC0bYNvRtcoklF3xGtLViumSYxWykJS+7AU=
-google.golang.org/grpc v1.67.1/go.mod h1:1gLDyUQU7CTLJI90u3nXZ9ekeghjeM7pTDZlqFNg2AA=
+google.golang.org/grpc v1.69.2/go.mod h1:vyjdE6jLBI76dgpDojsFGNaHlxdjXN9ghpnd2o7JGZ4=
-google.golang.org/protobuf v1.35.2 h1:8Ar7bF+apOIoThw1EdZl0p1oWvMqTHmpA2fRTyZO8io=
+google.golang.org/protobuf v1.36.1 h1:yBPeRvTftaleIgM3PZ/WBIZ7XM/eEYAaEyCwvyjq/gk=
-google.golang.org/protobuf v1.35.2/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.36.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

infra/conf/common.go

@@ -2,6 +2,7 @@ package conf
 
 import (
 	"encoding/json"
+	"fmt"
 	"strconv"
 	"strings"
 
@@ -258,6 +259,18 @@ type Int32Range struct {
 	To    int32
 }
 
+func (v Int32Range) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.String())
+}
+
+func (v Int32Range) String() string {
+	if v.Left == v.Right {
+		return strconv.Itoa(int(v.Left))
+	} else {
+		return fmt.Sprintf("%d-%d", v.Left, v.Right)
+	}
+}
+
 func (v *Int32Range) UnmarshalJSON(data []byte) error {
 	defer v.ensureOrder()
 	var str string

infra/conf/freedom.go

@@ -161,9 +161,6 @@ func ParseNoise(noise *Noise) (*freedom.Noise, error) {
 		}
 		NConfig.LengthMin = uint64(min)
 		NConfig.LengthMax = uint64(max)
-		if NConfig.LengthMin > NConfig.LengthMax {
-			NConfig.LengthMin, NConfig.LengthMax = NConfig.LengthMax, NConfig.LengthMin
-		}
 		if NConfig.LengthMin == 0 {
 			return nil, errors.New("rand lengthMin or lengthMax cannot be 0")
 		}
@@ -180,23 +177,12 @@ func ParseNoise(noise *Noise) (*freedom.Noise, error) {
 		}
 
 	default:
-		return nil, errors.New("Invalid packet,only rand,str,base64 are supported")
+		return nil, errors.New("Invalid packet, only rand/str/base64 are supported")
 	}
 
 	if noise.Delay != nil {
-		if noise.Delay.From != 0 && noise.Delay.To != 0 {
+		NConfig.DelayMin = uint64(noise.Delay.From)
-			NConfig.DelayMin = uint64(noise.Delay.From)
+		NConfig.DelayMax = uint64(noise.Delay.To)
-			NConfig.DelayMax = uint64(noise.Delay.To)
-			if NConfig.DelayMin > NConfig.LengthMax {
-				NConfig.DelayMin, NConfig.DelayMax = NConfig.LengthMax, NConfig.DelayMin
-			}
-		} else {
-			return nil, errors.New("DelayMin or DelayMax cannot be zero")
-		}
-
-	} else {
-		NConfig.DelayMin = 0
-		NConfig.DelayMax = 0
 	}
 	return NConfig, nil
 }

infra/conf/transport_internet.go

@@ -16,8 +16,6 @@ import (
 	"github.com/xtls/xray-core/common/platform/filesystem"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/transport/internet"
-	httpheader "github.com/xtls/xray-core/transport/internet/headers/http"
-	"github.com/xtls/xray-core/transport/internet/http"
 	"github.com/xtls/xray-core/transport/internet/httpupgrade"
 	"github.com/xtls/xray-core/transport/internet/kcp"
 	"github.com/xtls/xray-core/transport/internet/reality"
@@ -149,6 +147,7 @@ type WebSocketConfig struct {
 	Path                string            `json:"path"`
 	Headers             map[string]string `json:"headers"`
 	AcceptProxyProtocol bool              `json:"acceptProxyProtocol"`
+	HeartbeatPeriod     uint32            `json:"heartbeatPeriod"`
 }
 
 // Build implements Buildable.
@@ -164,13 +163,15 @@ func (c *WebSocketConfig) Build() (proto.Message, error) {
 			path = u.String()
 		}
 	}
-	// If http host is not set in the Host field, but in headers field, we add it to Host Field here.
+	// Priority (client): host > serverName > address
-	// If we don't do that, http host will be overwritten as address.
+	for k, v := range c.Headers {
-	// Host priority: Host field > headers field > address.
+		if strings.ToLower(k) == "host" {
-	if c.Host == "" && c.Headers["host"] != "" {
+			errors.PrintDeprecatedFeatureWarning(`"host" in "headers"`, `independent "host"`)
-		c.Host = c.Headers["host"]
+			if c.Host == "" {
-	} else if c.Host == "" && c.Headers["Host"] != "" {
+				c.Host = v
-		c.Host = c.Headers["Host"]
+			}
+			delete(c.Headers, k)
+		}
 	}
 	config := &websocket.Config{
 		Path:                path,
@@ -178,6 +179,7 @@ func (c *WebSocketConfig) Build() (proto.Message, error) {
 		Header:              c.Headers,
 		AcceptProxyProtocol: c.AcceptProxyProtocol,
 		Ed:                  ed,
+		HeartbeatPeriod:     c.HeartbeatPeriod,
 	}
 	return config, nil
 }
@@ -202,15 +204,11 @@ func (c *HttpUpgradeConfig) Build() (proto.Message, error) {
 			path = u.String()
 		}
 	}
-	// If http host is not set in the Host field, but in headers field, we add it to Host Field here.
+	// Priority (client): host > serverName > address
-	// If we don't do that, http host will be overwritten as address.
+	for k := range c.Headers {
-	// Host priority: Host field > headers field > address.
+		if strings.ToLower(k) == "host" {
-	if c.Host == "" && c.Headers["host"] != "" {
+			return nil, errors.New(`"headers" can't contain "host"`)
-		c.Host = c.Headers["host"]
+		}
-		delete(c.Headers, "host")
-	} else if c.Host == "" && c.Headers["Host"] != "" {
-		c.Host = c.Headers["Host"]
-		delete(c.Headers, "Host")
 	}
 	config := &httpupgrade.Config{
 		Path:                path,
@@ -225,35 +223,30 @@ func (c *HttpUpgradeConfig) Build() (proto.Message, error) {
 type SplitHTTPConfig struct {
 	Host                 string            `json:"host"`
 	Path                 string            `json:"path"`
-	Headers              map[string]string `json:"headers"`
-	ScMaxConcurrentPosts *Int32Range       `json:"scMaxConcurrentPosts"`
-	ScMaxEachPostBytes   *Int32Range       `json:"scMaxEachPostBytes"`
-	ScMinPostsIntervalMs *Int32Range       `json:"scMinPostsIntervalMs"`
-	NoSSEHeader          bool              `json:"noSSEHeader"`
-	XPaddingBytes        *Int32Range       `json:"xPaddingBytes"`
-	Xmux                 Xmux              `json:"xmux"`
-	DownloadSettings     *StreamConfig     `json:"downloadSettings"`
 	Mode                 string            `json:"mode"`
-	Extra                json.RawMessage   `json:"extra"`
+	Headers              map[string]string `json:"headers"`
+	XPaddingBytes        Int32Range        `json:"xPaddingBytes"`
 	NoGRPCHeader         bool              `json:"noGRPCHeader"`
+	NoSSEHeader          bool              `json:"noSSEHeader"`
+	ScMaxEachPostBytes   Int32Range        `json:"scMaxEachPostBytes"`
+	ScMinPostsIntervalMs Int32Range        `json:"scMinPostsIntervalMs"`
+	ScMaxBufferedPosts   int64             `json:"scMaxBufferedPosts"`
+	Xmux                 XmuxConfig        `json:"xmux"`
+	DownloadSettings     *StreamConfig     `json:"downloadSettings"`
+	Extra                json.RawMessage   `json:"extra"`
 }
 
-type Xmux struct {
+type XmuxConfig struct {
-	MaxConcurrency *Int32Range `json:"maxConcurrency"`
+	MaxConcurrency   Int32Range `json:"maxConcurrency"`
-	MaxConnections *Int32Range `json:"maxConnections"`
+	MaxConnections   Int32Range `json:"maxConnections"`
-	CMaxReuseTimes *Int32Range `json:"cMaxReuseTimes"`
+	CMaxReuseTimes   Int32Range `json:"cMaxReuseTimes"`
-	CMaxLifetimeMs *Int32Range `json:"cMaxLifetimeMs"`
+	HMaxRequestTimes Int32Range `json:"hMaxRequestTimes"`
+	HMaxReusableSecs Int32Range `json:"hMaxReusableSecs"`
+	HKeepAlivePeriod int64      `json:"hKeepAlivePeriod"`
 }
 
-func splithttpNewRandRangeConfig(input *Int32Range) *splithttp.RandRangeConfig {
+func newRangeConfig(input Int32Range) *splithttp.RangeConfig {
-	if input == nil {
+	return &splithttp.RangeConfig{
-		return &splithttp.RandRangeConfig{
-			From: 0,
-			To:   0,
-		}
-	}
-
-	return &splithttp.RandRangeConfig{
 		From: input.From,
 		To:   input.To,
 	}
@@ -269,116 +262,67 @@ func (c *SplitHTTPConfig) Build() (proto.Message, error) {
 		extra.Host = c.Host
 		extra.Path = c.Path
 		extra.Mode = c.Mode
-		extra.Extra = c.Extra
 		c = &extra
 	}
 
-	// If http host is not set in the Host field, but in headers field, we add it to Host Field here.
-	// If we don't do that, http host will be overwritten as address.
-	// Host priority: Host field > headers field > address.
-	if c.Host == "" && c.Headers["host"] != "" {
-		c.Host = c.Headers["host"]
-	} else if c.Host == "" && c.Headers["Host"] != "" {
-		c.Host = c.Headers["Host"]
-	}
-
-	if c.Xmux.MaxConnections != nil && c.Xmux.MaxConnections.To > 0 && c.Xmux.MaxConcurrency != nil && c.Xmux.MaxConcurrency.To > 0 {
-		return nil, errors.New("maxConnections cannot be specified together with maxConcurrency")
-	}
-
-	// Multiplexing config
-	muxProtobuf := splithttp.Multiplexing{
-		MaxConcurrency: splithttpNewRandRangeConfig(c.Xmux.MaxConcurrency),
-		MaxConnections: splithttpNewRandRangeConfig(c.Xmux.MaxConnections),
-		CMaxReuseTimes: splithttpNewRandRangeConfig(c.Xmux.CMaxReuseTimes),
-		CMaxLifetimeMs: splithttpNewRandRangeConfig(c.Xmux.CMaxLifetimeMs),
-	}
-
-	if muxProtobuf.MaxConcurrency.To == 0 &&
-		muxProtobuf.MaxConnections.To == 0 &&
-		muxProtobuf.CMaxReuseTimes.To == 0 &&
-		muxProtobuf.CMaxLifetimeMs.To == 0 {
-		muxProtobuf.MaxConcurrency.From = 16
-		muxProtobuf.MaxConcurrency.To = 32
-		muxProtobuf.CMaxReuseTimes.From = 64
-		muxProtobuf.CMaxReuseTimes.To = 128
-	}
-
 	switch c.Mode {
 	case "":
 		c.Mode = "auto"
-	case "auto", "packet-up", "stream-up":
+	case "auto", "packet-up", "stream-up", "stream-one":
 	default:
 		return nil, errors.New("unsupported mode: " + c.Mode)
 	}
 
-	config := &splithttp.Config{
+	// Priority (client): host > serverName > address
-		Path:                 c.Path,
+	for k := range c.Headers {
-		Host:                 c.Host,
+		if strings.ToLower(k) == "host" {
-		Header:               c.Headers,
+			return nil, errors.New(`"headers" can't contain "host"`)
-		ScMaxConcurrentPosts: splithttpNewRandRangeConfig(c.ScMaxConcurrentPosts),
-		ScMaxEachPostBytes:   splithttpNewRandRangeConfig(c.ScMaxEachPostBytes),
-		ScMinPostsIntervalMs: splithttpNewRandRangeConfig(c.ScMinPostsIntervalMs),
-		NoSSEHeader:          c.NoSSEHeader,
-		XPaddingBytes:        splithttpNewRandRangeConfig(c.XPaddingBytes),
-		Xmux:                 &muxProtobuf,
-		Mode:                 c.Mode,
-		NoGRPCHeader:         c.NoGRPCHeader,
-	}
-	var err error
-	if c.DownloadSettings != nil {
-		if c.Extra != nil {
-			c.DownloadSettings.SocketSettings = nil
 		}
+	}
+
+	if c.Xmux.MaxConnections.To > 0 && c.Xmux.MaxConcurrency.To > 0 {
+		return nil, errors.New("maxConnections cannot be specified together with maxConcurrency")
+	}
+	if c.Xmux == (XmuxConfig{}) {
+		c.Xmux.MaxConcurrency.From = 16
+		c.Xmux.MaxConcurrency.To = 32
+		c.Xmux.HMaxRequestTimes.From = 600
+		c.Xmux.HMaxRequestTimes.To = 900
+		c.Xmux.HMaxReusableSecs.From = 1800
+		c.Xmux.HMaxReusableSecs.To = 3000
+	}
+
+	config := &splithttp.Config{
+		Host:                 c.Host,
+		Path:                 c.Path,
+		Mode:                 c.Mode,
+		Headers:              c.Headers,
+		XPaddingBytes:        newRangeConfig(c.XPaddingBytes),
+		NoGRPCHeader:         c.NoGRPCHeader,
+		NoSSEHeader:          c.NoSSEHeader,
+		ScMaxEachPostBytes:   newRangeConfig(c.ScMaxEachPostBytes),
+		ScMinPostsIntervalMs: newRangeConfig(c.ScMinPostsIntervalMs),
+		ScMaxBufferedPosts:   c.ScMaxBufferedPosts,
+		Xmux: &splithttp.XmuxConfig{
+			MaxConcurrency:   newRangeConfig(c.Xmux.MaxConcurrency),
+			MaxConnections:   newRangeConfig(c.Xmux.MaxConnections),
+			CMaxReuseTimes:   newRangeConfig(c.Xmux.CMaxReuseTimes),
+			HMaxRequestTimes: newRangeConfig(c.Xmux.HMaxRequestTimes),
+			HMaxReusableSecs: newRangeConfig(c.Xmux.HMaxReusableSecs),
+			HKeepAlivePeriod: c.Xmux.HKeepAlivePeriod,
+		},
+	}
+
+	if c.DownloadSettings != nil {
+		if c.Mode == "stream-one" {
+			return nil, errors.New(`Can not use "downloadSettings" in "stream-one" mode.`)
+		}
+		var err error
 		if config.DownloadSettings, err = c.DownloadSettings.Build(); err != nil {
 			return nil, errors.New(`Failed to build "downloadSettings".`).Base(err)
 		}
 	}
-	return config, nil
-}
 
-type HTTPConfig struct {
-	Host               *StringList            `json:"host"`
-	Path               string                 `json:"path"`
-	ReadIdleTimeout    int32                  `json:"read_idle_timeout"`
-	HealthCheckTimeout int32                  `json:"health_check_timeout"`
-	Method             string                 `json:"method"`
-	Headers            map[string]*StringList `json:"headers"`
-}
-
-// Build implements Buildable.
-func (c *HTTPConfig) Build() (proto.Message, error) {
-	if c.ReadIdleTimeout <= 0 {
-		c.ReadIdleTimeout = 0
-	}
-	if c.HealthCheckTimeout <= 0 {
-		c.HealthCheckTimeout = 0
-	}
-	config := &http.Config{
-		Path:               c.Path,
-		IdleTimeout:        c.ReadIdleTimeout,
-		HealthCheckTimeout: c.HealthCheckTimeout,
-	}
-	if c.Host != nil {
-		config.Host = []string(*c.Host)
-	}
-	if c.Method != "" {
-		config.Method = c.Method
-	}
-	if len(c.Headers) > 0 {
-		config.Header = make([]*httpheader.Header, 0, len(c.Headers))
-		headerNames := sortMapKeys(c.Headers)
-		for _, key := range headerNames {
-			value := c.Headers[key]
-			if value == nil {
-				return nil, errors.New("empty HTTP header value: " + key).AtError()
-			}
-			config.Header = append(config.Header, &httpheader.Header{
-				Name:  key,
-				Value: append([]string(nil), (*value)...),
-			})
-		}
-	}
 	return config, nil
 }
 
@@ -490,7 +434,7 @@ func (c *TLSConfig) Build() (proto.Message, error) {
 	config.MaxVersion = c.MaxVersion
 	config.CipherSuites = c.CipherSuites
 	config.Fingerprint = strings.ToLower(c.Fingerprint)
-	if config.Fingerprint != "" && tls.GetFingerprint(config.Fingerprint) == nil {
+	if config.Fingerprint != "unsafe" && tls.GetFingerprint(config.Fingerprint) == nil {
 		return nil, errors.New(`unknown fingerprint: `, config.Fingerprint)
 	}
 	config.RejectUnknownSni = c.RejectUnknownSNI
@@ -636,15 +580,13 @@ func (c *REALITYConfig) Build() (proto.Message, error) {
 		config.ServerNames = c.ServerNames
 		config.MaxTimeDiff = c.MaxTimeDiff
 	} else {
-		if c.Fingerprint == "" {
+		config.Fingerprint = strings.ToLower(c.Fingerprint)
-			return nil, errors.New(`empty "fingerprint"`)
+		if config.Fingerprint == "unsafe" || config.Fingerprint == "hellogolang" {
-		}
-		if config.Fingerprint = strings.ToLower(c.Fingerprint); tls.GetFingerprint(config.Fingerprint) == nil {
-			return nil, errors.New(`unknown "fingerprint": `, config.Fingerprint)
-		}
-		if config.Fingerprint == "hellogolang" {
 			return nil, errors.New(`invalid "fingerprint": `, config.Fingerprint)
 		}
+		if tls.GetFingerprint(config.Fingerprint) == nil {
+			return nil, errors.New(`unknown "fingerprint": `, config.Fingerprint)
+		}
 		if len(c.ServerNames) != 0 {
 			return nil, errors.New(`non-empty "serverNames", please use "serverName" instead`)
 		}
@@ -702,18 +644,23 @@ func (p TransportProtocol) Build() (string, error) {
 	switch strings.ToLower(string(p)) {
 	case "raw", "tcp":
 		return "tcp", nil
-	case "kcp", "mkcp":
-		return "mkcp", nil
-	case "ws", "websocket":
-		return "websocket", nil
-	case "h2", "h3", "http":
-		return "http", nil
-	case "grpc":
-		return "grpc", nil
-	case "httpupgrade":
-		return "httpupgrade", nil
 	case "xhttp", "splithttp":
 		return "splithttp", nil
+	case "kcp", "mkcp":
+		return "mkcp", nil
+	case "grpc":
+		errors.PrintDeprecatedFeatureWarning("gRPC transport (with unnecessary costs, etc.)", "XHTTP stream-up H2")
+		return "grpc", nil
+	case "ws", "websocket":
+		errors.PrintDeprecatedFeatureWarning("WebSocket transport (with ALPN http/1.1, etc.)", "XHTTP H2 & H3")
+		return "websocket", nil
+	case "httpupgrade":
+		errors.PrintDeprecatedFeatureWarning("HTTPUpgrade transport (with ALPN http/1.1, etc.)", "XHTTP H2 & H3")
+		return "httpupgrade", nil
+	case "h2", "h3", "http":
+		return "", errors.PrintRemovedFeatureError("HTTP transport (without header padding, etc.)", "XHTTP stream-one H2 & H3")
+	case "quic":
+		return "", errors.PrintRemovedFeatureError("QUIC transport (without web service, etc.)", "XHTTP stream-one H3")
 	default:
 		return "", errors.New("Config: unknown transport protocol: ", p)
 	}
@@ -738,7 +685,7 @@ type SocketConfig struct {
 	TCPCongestion        string                 `json:"tcpCongestion"`
 	TCPWindowClamp       int32                  `json:"tcpWindowClamp"`
 	TCPMaxSeg            int32                  `json:"tcpMaxSeg"`
-	TcpNoDelay           bool                   `json:"tcpNoDelay"`
+	Penetrate            bool                   `json:"penetrate"`
 	TCPUserTimeout       int32                  `json:"tcpUserTimeout"`
 	V6only               bool                   `json:"v6only"`
 	Interface            string                 `json:"interface"`
@@ -825,7 +772,7 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
 		TcpCongestion:        c.TCPCongestion,
 		TcpWindowClamp:       c.TCPWindowClamp,
 		TcpMaxSeg:            c.TCPMaxSeg,
-		TcpNoDelay:           c.TcpNoDelay,
+		Penetrate:            c.Penetrate,
 		TcpUserTimeout:       c.TCPUserTimeout,
 		V6Only:               c.V6only,
 		Interface:            c.Interface,
@@ -843,14 +790,13 @@ type StreamConfig struct {
 	REALITYSettings     *REALITYConfig     `json:"realitySettings"`
 	RAWSettings         *TCPConfig         `json:"rawSettings"`
 	TCPSettings         *TCPConfig         `json:"tcpSettings"`
-	KCPSettings         *KCPConfig         `json:"kcpSettings"`
-	WSSettings          *WebSocketConfig   `json:"wsSettings"`
-	HTTPSettings        *HTTPConfig        `json:"httpSettings"`
-	SocketSettings      *SocketConfig      `json:"sockopt"`
-	GRPCConfig          *GRPCConfig        `json:"grpcSettings"`
-	HTTPUPGRADESettings *HttpUpgradeConfig `json:"httpupgradeSettings"`
 	XHTTPSettings       *SplitHTTPConfig   `json:"xhttpSettings"`
 	SplitHTTPSettings   *SplitHTTPConfig   `json:"splithttpSettings"`
+	KCPSettings         *KCPConfig         `json:"kcpSettings"`
+	GRPCSettings        *GRPCConfig        `json:"grpcSettings"`
+	WSSettings          *WebSocketConfig   `json:"wsSettings"`
+	HTTPUPGRADESettings *HttpUpgradeConfig `json:"httpupgradeSettings"`
+	SocketSettings      *SocketConfig      `json:"sockopt"`
 }
 
 // Build implements Buildable.
@@ -884,8 +830,8 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 		config.SecuritySettings = append(config.SecuritySettings, tm)
 		config.SecurityType = tm.Type
 	case "reality":
-		if config.ProtocolName != "tcp" && config.ProtocolName != "http" && config.ProtocolName != "grpc" && config.ProtocolName != "splithttp" {
+		if config.ProtocolName != "tcp" && config.ProtocolName != "splithttp" && config.ProtocolName != "grpc" {
-			return nil, errors.New("REALITY only supports RAW, H2, gRPC and XHTTP for now.")
+			return nil, errors.New("REALITY only supports RAW, XHTTP and gRPC for now.")
 		}
 		if c.REALITYSettings == nil {
 			return nil, errors.New(`REALITY: Empty "realitySettings".`)
@@ -915,56 +861,6 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 			Settings:     serial.ToTypedMessage(ts),
 		})
 	}
-	if c.KCPSettings != nil {
-		ts, err := c.KCPSettings.Build()
-		if err != nil {
-			return nil, errors.New("Failed to build mKCP config.").Base(err)
-		}
-		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
-			ProtocolName: "mkcp",
-			Settings:     serial.ToTypedMessage(ts),
-		})
-	}
-	if c.WSSettings != nil {
-		ts, err := c.WSSettings.Build()
-		if err != nil {
-			return nil, errors.New("Failed to build WebSocket config.").Base(err)
-		}
-		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
-			ProtocolName: "websocket",
-			Settings:     serial.ToTypedMessage(ts),
-		})
-	}
-	if c.HTTPSettings != nil {
-		ts, err := c.HTTPSettings.Build()
-		if err != nil {
-			return nil, errors.New("Failed to build HTTP config.").Base(err)
-		}
-		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
-			ProtocolName: "http",
-			Settings:     serial.ToTypedMessage(ts),
-		})
-	}
-	if c.GRPCConfig != nil {
-		gs, err := c.GRPCConfig.Build()
-		if err != nil {
-			return nil, errors.New("Failed to build gRPC config.").Base(err)
-		}
-		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
-			ProtocolName: "grpc",
-			Settings:     serial.ToTypedMessage(gs),
-		})
-	}
-	if c.HTTPUPGRADESettings != nil {
-		hs, err := c.HTTPUPGRADESettings.Build()
-		if err != nil {
-			return nil, errors.New("Failed to build HttpUpgrade config.").Base(err)
-		}
-		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
-			ProtocolName: "httpupgrade",
-			Settings:     serial.ToTypedMessage(hs),
-		})
-	}
 	if c.XHTTPSettings != nil {
 		c.SplitHTTPSettings = c.XHTTPSettings
 	}
@@ -978,10 +874,50 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 			Settings:     serial.ToTypedMessage(hs),
 		})
 	}
+	if c.KCPSettings != nil {
+		ts, err := c.KCPSettings.Build()
+		if err != nil {
+			return nil, errors.New("Failed to build mKCP config.").Base(err)
+		}
+		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
+			ProtocolName: "mkcp",
+			Settings:     serial.ToTypedMessage(ts),
+		})
+	}
+	if c.GRPCSettings != nil {
+		gs, err := c.GRPCSettings.Build()
+		if err != nil {
+			return nil, errors.New("Failed to build gRPC config.").Base(err)
+		}
+		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
+			ProtocolName: "grpc",
+			Settings:     serial.ToTypedMessage(gs),
+		})
+	}
+	if c.WSSettings != nil {
+		ts, err := c.WSSettings.Build()
+		if err != nil {
+			return nil, errors.New("Failed to build WebSocket config.").Base(err)
+		}
+		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
+			ProtocolName: "websocket",
+			Settings:     serial.ToTypedMessage(ts),
+		})
+	}
+	if c.HTTPUPGRADESettings != nil {
+		hs, err := c.HTTPUPGRADESettings.Build()
+		if err != nil {
+			return nil, errors.New("Failed to build HTTPUpgrade config.").Base(err)
+		}
+		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
+			ProtocolName: "httpupgrade",
+			Settings:     serial.ToTypedMessage(hs),
+		})
+	}
 	if c.SocketSettings != nil {
 		ss, err := c.SocketSettings.Build()
 		if err != nil {
-			return nil, errors.New("Failed to build sockopt").Base(err)
+			return nil, errors.New("Failed to build sockopt.").Base(err)
 		}
 		config.SocketSettings = ss
 	}

infra/conf/xray.go

@@ -24,6 +24,7 @@ var (
 		"dokodemo-door": func() interface{} { return new(DokodemoConfig) },
 		"http":          func() interface{} { return new(HTTPServerConfig) },
 		"shadowsocks":   func() interface{} { return new(ShadowsocksServerConfig) },
+		"mixed":         func() interface{} { return new(SocksServerConfig) },
 		"socks":         func() interface{} { return new(SocksServerConfig) },
 		"vless":         func() interface{} { return new(VLessInboundConfig) },
 		"vmess":         func() interface{} { return new(VMessInboundConfig) },

infra/conf/xray_test.go

@@ -48,9 +48,7 @@ func TestXrayConfig(t *testing.T) {
 					"streamSettings": {
 						"network": "ws",
 						"wsSettings": {
-							"headers": {
+							"host": "example.domain",
-								"host": "example.domain"
-							},
 							"path": ""
 						},
 						"tlsSettings": {
@@ -139,9 +137,6 @@ func TestXrayConfig(t *testing.T) {
 										ProtocolName: "websocket",
 										Settings: serial.ToTypedMessage(&websocket.Config{
 											Host: "example.domain",
-											Header: map[string]string{
-												"host": "example.domain",
-											},
 										}),
 									},
 								},

infra/vformat/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"flag"
 	"fmt"
 	"go/build"
@@ -18,7 +19,7 @@ var directory = flag.String("pwd", "", "Working directory of Xray vformat.")
 func envFile() (string, error) {
 	if file := os.Getenv("GOENV"); file != "" {
 		if file == "off" {
-			return "", fmt.Errorf("GOENV=off")
+			return "", errors.New("GOENV=off")
 		}
 		return file, nil
 	}
@@ -27,7 +28,7 @@ func envFile() (string, error) {
 		return "", err
 	}
 	if dir == "" {
-		return "", fmt.Errorf("missing user-config dir")
+		return "", errors.New("missing user-config dir")
 	}
 	return filepath.Join(dir, "go", "env"), nil
 }
@@ -40,7 +41,7 @@ func GetRuntimeEnv(key string) (string, error) {
 		return "", err
 	}
 	if file == "" {
-		return "", fmt.Errorf("missing runtime env file")
+		return "", errors.New("missing runtime env file")
 	}
 	var data []byte
 	var runtimeEnv string

infra/vprotogen/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"flag"
 	"fmt"
 	"go/build"
@@ -22,7 +23,7 @@ var directory = flag.String("pwd", "", "Working directory of Xray vprotogen.")
 func envFile() (string, error) {
 	if file := os.Getenv("GOENV"); file != "" {
 		if file == "off" {
-			return "", fmt.Errorf("GOENV=off")
+			return "", errors.New("GOENV=off")
 		}
 		return file, nil
 	}
@@ -31,7 +32,7 @@ func envFile() (string, error) {
 		return "", err
 	}
 	if dir == "" {
-		return "", fmt.Errorf("missing user-config dir")
+		return "", errors.New("missing user-config dir")
 	}
 	return filepath.Join(dir, "go", "env"), nil
 }
@@ -44,7 +45,7 @@ func GetRuntimeEnv(key string) (string, error) {
 		return "", err
 	}
 	if file == "" {
-		return "", fmt.Errorf("missing runtime env file")
+		return "", errors.New("missing runtime env file")
 	}
 	var data []byte
 	var runtimeEnv string
@@ -101,12 +102,12 @@ Download %s v%s or later from https://github.com/protocolbuffers/protobuf/releas
 func getProjectProtocVersion(url string) (string, error) {
 	resp, err := http.Get(url)
 	if err != nil {
-		return "", fmt.Errorf("can not get the version of protobuf used in xray project")
+		return "", errors.New("can not get the version of protobuf used in xray project")
 	}
 	defer resp.Body.Close()
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
-		return "", fmt.Errorf("can not read from body")
+		return "", errors.New("can not read from body")
 	}
 	versionRegexp := regexp.MustCompile(`\/\/\s*protoc\s*v\d+\.(\d+\.\d+)`)
 	matched := versionRegexp.FindStringSubmatch(string(body))

main/commands/all/api/shared.go

@@ -3,6 +3,7 @@ package api
 import (
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -101,7 +102,7 @@ func fetchHTTPContent(target string) ([]byte, error) {
 
 	content, err := buf.ReadAllToBytes(resp.Body)
 	if err != nil {
-		return nil, fmt.Errorf("failed to read HTTP response")
+		return nil, errors.New("failed to read HTTP response")
 	}
 
 	return content, nil

main/distro/all/all.go

@@ -51,7 +51,6 @@ import (
 
 	// Transports
 	_ "github.com/xtls/xray-core/transport/internet/grpc"
-	_ "github.com/xtls/xray-core/transport/internet/http"
 	_ "github.com/xtls/xray-core/transport/internet/httpupgrade"
 	_ "github.com/xtls/xray-core/transport/internet/kcp"
 	_ "github.com/xtls/xray-core/transport/internet/reality"

proxy/dns/dns.go

@@ -27,7 +27,7 @@ func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		h := new(Handler)
 		if err := core.RequireFeatures(ctx, func(dnsClient dns.Client, policyManager policy.Manager) error {
-			core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
+			core.OptionalFeatures(ctx, func(fdns dns.FakeDNSEngine) {
 				h.fdns = fdns
 			})
 			return h.Init(config.(*Config), dnsClient, policyManager)

proxy/dokodemo/dokodemo.go

@@ -2,6 +2,7 @@ package dokodemo
 
 import (
 	"context"
+	"runtime"
 	"sync/atomic"
 
 	"github.com/xtls/xray-core/common"
@@ -147,10 +148,6 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
 		return nil
 	}
 
-	tproxyRequest := func() error {
-		return nil
-	}
-
 	var writer buf.Writer
 	if network == net.Network_TCP {
 		writer = buf.NewWriter(conn)
@@ -180,7 +177,12 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
 				return err
 			}
 			writer = NewPacketWriter(pConn, &dest, mark, back)
-			defer writer.(*PacketWriter).Close()
+			defer func() {
+				runtime.Gosched()
+				common.Interrupt(link.Reader) // maybe duplicated
+				runtime.Gosched()
+				writer.(*PacketWriter).Close() // close fake UDP conns
+			}()
 			/*
 				sockopt := &internet.SocketConfig{
 					Tproxy: internet.SocketConfig_TProxy,
@@ -219,17 +221,24 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
 	responseDone := func() error {
 		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
 
+		if network == net.Network_UDP && destinationOverridden {
+			buf.Copy(link.Reader, writer) // respect upload's timeout
+			return nil
+		}
+
 		if err := buf.Copy(link.Reader, writer, buf.UpdateActivity(timer)); err != nil {
 			return errors.New("failed to transport response").Base(err)
 		}
 		return nil
 	}
 
-	if err := task.Run(ctx, task.OnSuccess(func() error {
+	if err := task.Run(ctx,
-		return task.Run(ctx, requestDone, tproxyRequest)
+		task.OnSuccess(func() error { return task.Run(ctx, requestDone) }, task.Close(link.Writer)),
-	}, task.Close(link.Writer)), responseDone); err != nil {
+		responseDone); err != nil {
-		common.Interrupt(link.Reader)
+		runtime.Gosched()
 		common.Interrupt(link.Writer)
+		runtime.Gosched()
+		common.Interrupt(link.Reader)
 		return errors.New("connection ends").Base(err)
 	}
 

proxy/freedom/freedom.go

@@ -419,7 +419,7 @@ func (w *NoisePacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 			}
 			w.Writer.WriteMultiBuffer(buf.MultiBuffer{buf.FromBytes(noise)})
 
-			if n.DelayMin != 0 {
+			if n.DelayMin != 0 || n.DelayMax != 0 {
 				time.Sleep(time.Duration(randBetween(int64(n.DelayMin), int64(n.DelayMax))) * time.Millisecond)
 			}
 		}

proxy/vless/inbound/inbound.go

@@ -491,12 +491,12 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 				rawInput = (*bytes.Buffer)(unsafe.Pointer(p + r.Offset))
 			}
 		} else {
-			return errors.New(account.ID.String() + " is not able to use " + requestAddons.Flow).AtWarning()
+			return errors.New("account " + account.ID.String() + " is not able to use the flow " + requestAddons.Flow).AtWarning()
 		}
 	case "":
 		inbound.CanSpliceCopy = 3
 		if account.Flow == vless.XRV && (request.Command == protocol.RequestCommandTCP || isMuxAndNotXUDP(request, first)) {
-			return errors.New(account.ID.String() + " is not able to use \"\". Note that the pure TLS proxy has certain TLS in TLS characters.").AtWarning()
+			return errors.New("account " + account.ID.String() + " is rejected since the client flow is empty. Note that the pure TLS proxy has certain TLS in TLS characters.").AtWarning()
 		}
 	default:
 		return errors.New("unknown request flow " + requestAddons.Flow).AtWarning()

proxy/wireguard/server.go

@@ -144,14 +144,15 @@ func (s *Server) forwardConnection(dest net.Destination, conn net.Conn) {
 		Reason: "",
 	})
 
+	if s.info.inboundTag != nil {
+		ctx = session.ContextWithInbound(ctx, s.info.inboundTag)
+	}
+
 	// what's this?
 	// Session information should not be shared between different connections
 	// why reuse them in server level? This will cause incorrect destoverride and unexpected routing behavior.
 	// Disable it temporarily. Maybe s.info should be removed.
 
-	//  if s.info.inboundTag != nil {
-	//  ctx = session.ContextWithInbound(ctx, s.info.inboundTag)
-	//  }
 	//	if s.info.outboundTag != nil {
 	//		ctx = session.ContextWithOutbounds(ctx, []*session.Outbound{s.info.outboundTag})
 	//	}

testing/scenarios/common.go

@@ -96,6 +96,7 @@ func InitializeServerConfig(config *core.Config) (*exec.Cmd, error) {
 
 var (
 	testBinaryPath    string
+	testBinaryCleanFn func()
 	testBinaryPathGen sync.Once
 )
 
@@ -108,6 +109,7 @@ func genTestBinaryPath() {
 				return err
 			}
 			tempDir = dir
+			testBinaryCleanFn = func() { os.RemoveAll(dir) }
 			return nil
 		}))
 		file := filepath.Join(tempDir, "xray.test")

testing/scenarios/main_test.go

@@ -0,0 +1,12 @@
+package scenarios
+
+import (
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	genTestBinaryPath()
+	defer testBinaryCleanFn()
+
+	m.Run()
+}

testing/scenarios/tls_test.go

@@ -23,7 +23,6 @@ import (
 	"github.com/xtls/xray-core/testing/servers/udp"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/grpc"
-	"github.com/xtls/xray-core/transport/internet/http"
 	"github.com/xtls/xray-core/transport/internet/tls"
 	"github.com/xtls/xray-core/transport/internet/websocket"
 	"golang.org/x/sync/errgroup"
@@ -458,128 +457,6 @@ func TestTLSOverWebSocket(t *testing.T) {
 	}
 }
 
-func TestHTTP2(t *testing.T) {
-	tcpServer := tcp.Server{
-		MsgProcessor: xor,
-	}
-	dest, err := tcpServer.Start()
-	common.Must(err)
-	defer tcpServer.Close()
-
-	userID := protocol.NewID(uuid.New())
-	serverPort := tcp.PickPort()
-	serverConfig := &core.Config{
-		Inbound: []*core.InboundHandlerConfig{
-			{
-				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
-					PortList: &net.PortList{Range: []*net.PortRange{net.SinglePortRange(serverPort)}},
-					Listen:   net.NewIPOrDomain(net.LocalHostIP),
-					StreamSettings: &internet.StreamConfig{
-						ProtocolName: "http",
-						TransportSettings: []*internet.TransportConfig{
-							{
-								ProtocolName: "http",
-								Settings: serial.ToTypedMessage(&http.Config{
-									Host: []string{"example.com"},
-									Path: "/testpath",
-								}),
-							},
-						},
-						SecurityType: serial.GetMessageType(&tls.Config{}),
-						SecuritySettings: []*serial.TypedMessage{
-							serial.ToTypedMessage(&tls.Config{
-								Certificate: []*tls.Certificate{tls.ParseCertificate(cert.MustGenerate(nil))},
-							}),
-						},
-					},
-				}),
-				ProxySettings: serial.ToTypedMessage(&inbound.Config{
-					User: []*protocol.User{
-						{
-							Account: serial.ToTypedMessage(&vmess.Account{
-								Id: userID.String(),
-							}),
-						},
-					},
-				}),
-			},
-		},
-		Outbound: []*core.OutboundHandlerConfig{
-			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
-			},
-		},
-	}
-
-	clientPort := tcp.PickPort()
-	clientConfig := &core.Config{
-		Inbound: []*core.InboundHandlerConfig{
-			{
-				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
-					PortList: &net.PortList{Range: []*net.PortRange{net.SinglePortRange(clientPort)}},
-					Listen:   net.NewIPOrDomain(net.LocalHostIP),
-				}),
-				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
-					Address:  net.NewIPOrDomain(dest.Address),
-					Port:     uint32(dest.Port),
-					Networks: []net.Network{net.Network_TCP},
-				}),
-			},
-		},
-		Outbound: []*core.OutboundHandlerConfig{
-			{
-				ProxySettings: serial.ToTypedMessage(&outbound.Config{
-					Receiver: []*protocol.ServerEndpoint{
-						{
-							Address: net.NewIPOrDomain(net.LocalHostIP),
-							Port:    uint32(serverPort),
-							User: []*protocol.User{
-								{
-									Account: serial.ToTypedMessage(&vmess.Account{
-										Id: userID.String(),
-									}),
-								},
-							},
-						},
-					},
-				}),
-				SenderSettings: serial.ToTypedMessage(&proxyman.SenderConfig{
-					StreamSettings: &internet.StreamConfig{
-						ProtocolName: "http",
-						TransportSettings: []*internet.TransportConfig{
-							{
-								ProtocolName: "http",
-								Settings: serial.ToTypedMessage(&http.Config{
-									Host: []string{"example.com"},
-									Path: "/testpath",
-								}),
-							},
-						},
-						SecurityType: serial.GetMessageType(&tls.Config{}),
-						SecuritySettings: []*serial.TypedMessage{
-							serial.ToTypedMessage(&tls.Config{
-								AllowInsecure: true,
-							}),
-						},
-					},
-				}),
-			},
-		},
-	}
-
-	servers, err := InitializeServerConfigs(serverConfig, clientConfig)
-	common.Must(err)
-	defer CloseAllServers(servers)
-
-	var errg errgroup.Group
-	for i := 0; i < 10; i++ {
-		errg.Go(testTCPConn(clientPort, 1024*1024, time.Second*40))
-	}
-	if err := errg.Wait(); err != nil {
-		t.Error(err)
-	}
-}
-
 func TestGRPC(t *testing.T) {
 	tcpServer := tcp.Server{
 		MsgProcessor: xor,

transport/internet/config.pb.go

@@ -448,7 +448,7 @@ type SocketConfig struct {
 	TcpWindowClamp             int32            `protobuf:"varint,15,opt,name=tcp_window_clamp,json=tcpWindowClamp,proto3" json:"tcp_window_clamp,omitempty"`
 	TcpUserTimeout             int32            `protobuf:"varint,16,opt,name=tcp_user_timeout,json=tcpUserTimeout,proto3" json:"tcp_user_timeout,omitempty"`
 	TcpMaxSeg                  int32            `protobuf:"varint,17,opt,name=tcp_max_seg,json=tcpMaxSeg,proto3" json:"tcp_max_seg,omitempty"`
-	TcpNoDelay                 bool             `protobuf:"varint,18,opt,name=tcp_no_delay,json=tcpNoDelay,proto3" json:"tcp_no_delay,omitempty"`
+	Penetrate                  bool             `protobuf:"varint,18,opt,name=penetrate,proto3" json:"penetrate,omitempty"`
 	TcpMptcp                   bool             `protobuf:"varint,19,opt,name=tcp_mptcp,json=tcpMptcp,proto3" json:"tcp_mptcp,omitempty"`
 	CustomSockopt              []*CustomSockopt `protobuf:"bytes,20,rep,name=customSockopt,proto3" json:"customSockopt,omitempty"`
 }
@@ -602,9 +602,9 @@ func (x *SocketConfig) GetTcpMaxSeg() int32 {
 	return 0
 }
 
-func (x *SocketConfig) GetTcpNoDelay() bool {
+func (x *SocketConfig) GetPenetrate() bool {
 	if x != nil {
-		return x.TcpNoDelay
+		return x.Penetrate
 	}
 	return false
 }
@@ -678,7 +678,7 @@ var file_transport_internet_config_proto_rawDesc = []byte{
 	0x28, 0x09, 0x52, 0x03, 0x6f, 0x70, 0x74, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65,
 	0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x12, 0x12, 0x0a,
 	0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x74, 0x79, 0x70,
-	0x65, 0x22, 0x9f, 0x07, 0x0a, 0x0c, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x43, 0x6f, 0x6e, 0x66,
+	0x65, 0x22, 0x9b, 0x07, 0x0a, 0x0c, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x43, 0x6f, 0x6e, 0x66,
 	0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x6d, 0x61, 0x72, 0x6b, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05,
 	0x52, 0x04, 0x6d, 0x61, 0x72, 0x6b, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x66, 0x6f, 0x18, 0x02, 0x20,
 	0x01, 0x28, 0x05, 0x52, 0x03, 0x74, 0x66, 0x6f, 0x12, 0x48, 0x0a, 0x06, 0x74, 0x70, 0x72, 0x6f,
@@ -724,36 +724,36 @@ var file_transport_internet_config_proto_rawDesc = []byte{
 	0x10, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0e, 0x74, 0x63, 0x70, 0x55, 0x73, 0x65, 0x72, 0x54, 0x69,
 	0x6d, 0x65, 0x6f, 0x75, 0x74, 0x12, 0x1e, 0x0a, 0x0b, 0x74, 0x63, 0x70, 0x5f, 0x6d, 0x61, 0x78,
 	0x5f, 0x73, 0x65, 0x67, 0x18, 0x11, 0x20, 0x01, 0x28, 0x05, 0x52, 0x09, 0x74, 0x63, 0x70, 0x4d,
-	0x61, 0x78, 0x53, 0x65, 0x67, 0x12, 0x20, 0x0a, 0x0c, 0x74, 0x63, 0x70, 0x5f, 0x6e, 0x6f, 0x5f,
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 }
 
 var (

transport/internet/config.proto

@@ -103,7 +103,7 @@ message SocketConfig {
   
   string interface = 13;
 
-  bool   v6only = 14;
+  bool v6only = 14;
 
   int32 tcp_window_clamp = 15;
 
@@ -111,7 +111,7 @@ message SocketConfig {
 
   int32 tcp_max_seg = 17;
 
-  bool tcp_no_delay = 18;
+  bool penetrate = 18;
 
   bool tcp_mptcp = 19;
 

transport/internet/http/config.go

@@ -1,48 +0,0 @@
-package http
-
-import (
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/dice"
-	"github.com/xtls/xray-core/transport/internet"
-)
-
-func (c *Config) getHosts() []string {
-	if len(c.Host) == 0 {
-		return []string{""}
-	}
-	return c.Host
-}
-
-func (c *Config) isValidHost(host string) bool {
-	if len(c.Host) == 0 {
-		return true
-	}
-	hosts := c.getHosts()
-	for _, h := range hosts {
-		if internet.IsValidHTTPHost(host, h) {
-			return true
-		}
-	}
-	return false
-}
-
-func (c *Config) getRandomHost() string {
-	hosts := c.getHosts()
-	return hosts[dice.Roll(len(hosts))]
-}
-
-func (c *Config) getNormalizedPath() string {
-	if c.Path == "" {
-		return "/"
-	}
-	if c.Path[0] != '/' {
-		return "/" + c.Path
-	}
-	return c.Path
-}
-
-func init() {
-	common.Must(internet.RegisterProtocolConfigCreator(protocolName, func() interface{} {
-		return new(Config)
-	}))
-}

transport/internet/http/config.pb.go

@@ -1,193 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.35.1
-// 	protoc        v5.28.2
-// source: transport/internet/http/config.proto
-
-package http
-
-import (
-	http "github.com/xtls/xray-core/transport/internet/headers/http"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Host               []string       `protobuf:"bytes,1,rep,name=host,proto3" json:"host,omitempty"`
-	Path               string         `protobuf:"bytes,2,opt,name=path,proto3" json:"path,omitempty"`
-	IdleTimeout        int32          `protobuf:"varint,3,opt,name=idle_timeout,json=idleTimeout,proto3" json:"idle_timeout,omitempty"`
-	HealthCheckTimeout int32          `protobuf:"varint,4,opt,name=health_check_timeout,json=healthCheckTimeout,proto3" json:"health_check_timeout,omitempty"`
-	Method             string         `protobuf:"bytes,5,opt,name=method,proto3" json:"method,omitempty"`
-	Header             []*http.Header `protobuf:"bytes,6,rep,name=header,proto3" json:"header,omitempty"`
-}
-
-func (x *Config) Reset() {
-	*x = Config{}
-	mi := &file_transport_internet_http_config_proto_msgTypes[0]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *Config) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Config) ProtoMessage() {}
-
-func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_transport_internet_http_config_proto_msgTypes[0]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Config.ProtoReflect.Descriptor instead.
-func (*Config) Descriptor() ([]byte, []int) {
-	return file_transport_internet_http_config_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *Config) GetHost() []string {
-	if x != nil {
-		return x.Host
-	}
-	return nil
-}
-
-func (x *Config) GetPath() string {
-	if x != nil {
-		return x.Path
-	}
-	return ""
-}
-
-func (x *Config) GetIdleTimeout() int32 {
-	if x != nil {
-		return x.IdleTimeout
-	}
-	return 0
-}
-
-func (x *Config) GetHealthCheckTimeout() int32 {
-	if x != nil {
-		return x.HealthCheckTimeout
-	}
-	return 0
-}
-
-func (x *Config) GetMethod() string {
-	if x != nil {
-		return x.Method
-	}
-	return ""
-}
-
-func (x *Config) GetHeader() []*http.Header {
-	if x != nil {
-		return x.Header
-	}
-	return nil
-}
-
-var File_transport_internet_http_config_proto protoreflect.FileDescriptor
-
-var file_transport_internet_http_config_proto_rawDesc = []byte{
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-	0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70,
-	0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2f, 0x68, 0x74, 0x74,
-	0x70, 0xaa, 0x02, 0x1c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f,
-	0x72, 0x74, 0x2e, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x48, 0x74, 0x74, 0x70,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
-
-var (
-	file_transport_internet_http_config_proto_rawDescOnce sync.Once
-	file_transport_internet_http_config_proto_rawDescData = file_transport_internet_http_config_proto_rawDesc
-)
-
-func file_transport_internet_http_config_proto_rawDescGZIP() []byte {
-	file_transport_internet_http_config_proto_rawDescOnce.Do(func() {
-		file_transport_internet_http_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_transport_internet_http_config_proto_rawDescData)
-	})
-	return file_transport_internet_http_config_proto_rawDescData
-}
-
-var file_transport_internet_http_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_transport_internet_http_config_proto_goTypes = []any{
-	(*Config)(nil),      // 0: xray.transport.internet.http.Config
-	(*http.Header)(nil), // 1: xray.transport.internet.headers.http.Header
-}
-var file_transport_internet_http_config_proto_depIdxs = []int32{
-	1, // 0: xray.transport.internet.http.Config.header:type_name -> xray.transport.internet.headers.http.Header
-	1, // [1:1] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
-}
-
-func init() { file_transport_internet_http_config_proto_init() }
-func file_transport_internet_http_config_proto_init() {
-	if File_transport_internet_http_config_proto != nil {
-		return
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_transport_internet_http_config_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   1,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_transport_internet_http_config_proto_goTypes,
-		DependencyIndexes: file_transport_internet_http_config_proto_depIdxs,
-		MessageInfos:      file_transport_internet_http_config_proto_msgTypes,
-	}.Build()
-	File_transport_internet_http_config_proto = out.File
-	file_transport_internet_http_config_proto_rawDesc = nil
-	file_transport_internet_http_config_proto_goTypes = nil
-	file_transport_internet_http_config_proto_depIdxs = nil
-}

transport/internet/http/config.proto

@@ -1,18 +0,0 @@
-syntax = "proto3";
-
-package xray.transport.internet.http;
-option csharp_namespace = "Xray.Transport.Internet.Http";
-option go_package = "github.com/xtls/xray-core/transport/internet/http";
-option java_package = "com.xray.transport.internet.http";
-option java_multiple_files = true;
-
-import "transport/internet/headers/http/config.proto";
-
-message Config {
-  repeated string host = 1;
-  string path = 2;
-  int32 idle_timeout = 3;
-  int32 health_check_timeout = 4;
-  string method = 5;
-  repeated xray.transport.internet.headers.http.Header header = 6;
-}

transport/internet/http/dialer.go

@@ -1,311 +0,0 @@
-package http
-
-import (
-	"context"
-	gotls "crypto/tls"
-	"io"
-	"net/http"
-	"net/url"
-	"sync"
-	"time"
-
-	"github.com/quic-go/quic-go"
-	"github.com/quic-go/quic-go/http3"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/buf"
-	c "github.com/xtls/xray-core/common/ctx"
-	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/net/cnc"
-	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/transport/internet"
-	"github.com/xtls/xray-core/transport/internet/reality"
-	"github.com/xtls/xray-core/transport/internet/stat"
-	"github.com/xtls/xray-core/transport/internet/tls"
-	"github.com/xtls/xray-core/transport/pipe"
-	"golang.org/x/net/http2"
-)
-
-// defines the maximum time an idle TCP session can survive in the tunnel, so
-// it should be consistent across HTTP versions and with other transports.
-const connIdleTimeout = 300 * time.Second
-
-// consistent with quic-go
-const h3KeepalivePeriod = 10 * time.Second
-
-type dialerConf struct {
-	net.Destination
-	*internet.MemoryStreamConfig
-}
-
-var (
-	globalDialerMap    map[dialerConf]*http.Client
-	globalDialerAccess sync.Mutex
-)
-
-func getHTTPClient(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (*http.Client, error) {
-	globalDialerAccess.Lock()
-	defer globalDialerAccess.Unlock()
-
-	if globalDialerMap == nil {
-		globalDialerMap = make(map[dialerConf]*http.Client)
-	}
-
-	httpSettings := streamSettings.ProtocolSettings.(*Config)
-	tlsConfigs := tls.ConfigFromStreamSettings(streamSettings)
-	realityConfigs := reality.ConfigFromStreamSettings(streamSettings)
-	if tlsConfigs == nil && realityConfigs == nil {
-		return nil, errors.New("TLS or REALITY must be enabled for http transport.").AtWarning()
-	}
-	isH3 := tlsConfigs != nil && (len(tlsConfigs.NextProtocol) == 1 && tlsConfigs.NextProtocol[0] == "h3")
-	if isH3 {
-		dest.Network = net.Network_UDP
-	}
-	sockopt := streamSettings.SocketSettings
-
-	if client, found := globalDialerMap[dialerConf{dest, streamSettings}]; found {
-		return client, nil
-	}
-
-	var transport http.RoundTripper
-	if isH3 {
-		quicConfig := &quic.Config{
-			MaxIdleTimeout: connIdleTimeout,
-
-			// these two are defaults of quic-go/http3. the default of quic-go (no
-			// http3) is different, so it is hardcoded here for clarity.
-			// https://github.com/quic-go/quic-go/blob/b8ea5c798155950fb5bbfdd06cad1939c9355878/http3/client.go#L36-L39
-			MaxIncomingStreams: -1,
-			KeepAlivePeriod:    h3KeepalivePeriod,
-		}
-		roundTripper := &http3.RoundTripper{
-			QUICConfig:      quicConfig,
-			TLSClientConfig: tlsConfigs.GetTLSConfig(tls.WithDestination(dest)),
-			Dial: func(ctx context.Context, addr string, tlsCfg *gotls.Config, cfg *quic.Config) (quic.EarlyConnection, error) {
-				conn, err := internet.DialSystem(ctx, dest, streamSettings.SocketSettings)
-				if err != nil {
-					return nil, err
-				}
-
-				var udpConn net.PacketConn
-				var udpAddr *net.UDPAddr
-
-				switch c := conn.(type) {
-				case *internet.PacketConnWrapper:
-					var ok bool
-					udpConn, ok = c.Conn.(*net.UDPConn)
-					if !ok {
-						return nil, errors.New("PacketConnWrapper does not contain a UDP connection")
-					}
-					udpAddr, err = net.ResolveUDPAddr("udp", c.Dest.String())
-					if err != nil {
-						return nil, err
-					}
-				case *net.UDPConn:
-					udpConn = c
-					udpAddr, err = net.ResolveUDPAddr("udp", c.RemoteAddr().String())
-					if err != nil {
-						return nil, err
-					}
-				default:
-					udpConn = &internet.FakePacketConn{c}
-					udpAddr, err = net.ResolveUDPAddr("udp", c.RemoteAddr().String())
-					if err != nil {
-						return nil, err
-					}
-				}
-
-				return quic.DialEarly(ctx, udpConn, udpAddr, tlsCfg, cfg)
-			},
-		}
-		transport = roundTripper
-	} else {
-		transportH2 := &http2.Transport{
-			DialTLSContext: func(hctx context.Context, string, addr string, tlsConfig *gotls.Config) (net.Conn, error) {
-				rawHost, rawPort, err := net.SplitHostPort(addr)
-				if err != nil {
-					return nil, err
-				}
-				if len(rawPort) == 0 {
-					rawPort = "443"
-				}
-				port, err := net.PortFromString(rawPort)
-				if err != nil {
-					return nil, err
-				}
-				address := net.ParseAddress(rawHost)
-
-				hctx = c.ContextWithID(hctx, c.IDFromContext(ctx))
-				hctx = session.ContextWithOutbounds(hctx, session.OutboundsFromContext(ctx))
-				hctx = session.ContextWithTimeoutOnly(hctx, true)
-
-				pconn, err := internet.DialSystem(hctx, net.TCPDestination(address, port), sockopt)
-				if err != nil {
-					errors.LogErrorInner(ctx, err, "failed to dial to "+addr)
-					return nil, err
-				}
-
-				if realityConfigs != nil {
-					return reality.UClient(pconn, realityConfigs, hctx, dest)
-				}
-
-				var cn tls.Interface
-				if fingerprint := tls.GetFingerprint(tlsConfigs.Fingerprint); fingerprint != nil {
-					cn = tls.UClient(pconn, tlsConfig, fingerprint).(*tls.UConn)
-				} else {
-					cn = tls.Client(pconn, tlsConfig).(*tls.Conn)
-				}
-				if err := cn.HandshakeContext(ctx); err != nil {
-					errors.LogErrorInner(ctx, err, "failed to dial to "+addr)
-					return nil, err
-				}
-				if !tlsConfig.InsecureSkipVerify {
-					if err := cn.VerifyHostname(tlsConfig.ServerName); err != nil {
-						errors.LogErrorInner(ctx, err, "failed to dial to "+addr)
-						return nil, err
-					}
-				}
-				negotiatedProtocol := cn.NegotiatedProtocol()
-				if negotiatedProtocol != http2.NextProtoTLS {
-					return nil, errors.New("http2: unexpected ALPN protocol " + negotiatedProtocol + "; want q" + http2.NextProtoTLS).AtError()
-				}
-				return cn, nil
-			},
-		}
-		if tlsConfigs != nil {
-			transportH2.TLSClientConfig = tlsConfigs.GetTLSConfig(tls.WithDestination(dest))
-		}
-		if httpSettings.IdleTimeout > 0 || httpSettings.HealthCheckTimeout > 0 {
-			transportH2.ReadIdleTimeout = time.Second * time.Duration(httpSettings.IdleTimeout)
-			transportH2.PingTimeout = time.Second * time.Duration(httpSettings.HealthCheckTimeout)
-		}
-		transport = transportH2
-	}
-
-	client := &http.Client{
-		Transport: transport,
-	}
-
-	globalDialerMap[dialerConf{dest, streamSettings}] = client
-	return client, nil
-}
-
-// Dial dials a new TCP connection to the given destination.
-func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (stat.Connection, error) {
-	httpSettings := streamSettings.ProtocolSettings.(*Config)
-	client, err := getHTTPClient(ctx, dest, streamSettings)
-	if err != nil {
-		return nil, err
-	}
-
-	opts := pipe.OptionsFromContext(ctx)
-	preader, pwriter := pipe.New(opts...)
-	breader := &buf.BufferedReader{Reader: preader}
-
-	httpMethod := "PUT"
-	if httpSettings.Method != "" {
-		httpMethod = httpSettings.Method
-	}
-
-	httpHeaders := make(http.Header)
-
-	for _, httpHeader := range httpSettings.Header {
-		for _, httpHeaderValue := range httpHeader.Value {
-			httpHeaders.Set(httpHeader.Name, httpHeaderValue)
-		}
-	}
-
-	Host := httpSettings.getRandomHost()
-	if Host == "" && net.ParseAddress(dest.NetAddr()).Family().IsDomain() {
-		Host = dest.Address.String()
-	} else if Host == "" {
-		Host = "www.example.com"
-	}
-
-	request := &http.Request{
-		Method: httpMethod,
-		Host:   Host,
-		Body:   breader,
-		URL: &url.URL{
-			Scheme: "https",
-			Host:   dest.NetAddr(),
-			Path:   httpSettings.getNormalizedPath(),
-		},
-		Header: httpHeaders,
-	}
-	// Disable any compression method from server.
-	request.Header.Set("Accept-Encoding", "identity")
-
-	wrc := &WaitReadCloser{Wait: make(chan struct{})}
-	go func() {
-		response, err := client.Do(request)
-		if err != nil || response.StatusCode != 200 {
-			if err != nil {
-				errors.LogWarningInner(ctx, err, "failed to dial to ", dest)
-			} else {
-				errors.LogWarning(ctx, "unexpected status ", response.StatusCode)
-			}
-			wrc.Close()
-			{
-				// Abandon `client` if `client.Do(request)` failed
-				// See https://github.com/golang/go/issues/30702
-				globalDialerAccess.Lock()
-				if globalDialerMap[dialerConf{dest, streamSettings}] == client {
-					delete(globalDialerMap, dialerConf{dest, streamSettings})
-				}
-				globalDialerAccess.Unlock()
-			}
-			return
-		}
-		wrc.Set(response.Body)
-	}()
-
-	bwriter := buf.NewBufferedWriter(pwriter)
-	common.Must(bwriter.SetBuffered(false))
-	return cnc.NewConnection(
-		cnc.ConnectionOutput(wrc),
-		cnc.ConnectionInput(bwriter),
-		cnc.ConnectionOnClose(common.ChainedClosable{breader, bwriter, wrc}),
-	), nil
-}
-
-func init() {
-	common.Must(internet.RegisterTransportDialer(protocolName, Dial))
-}
-
-type WaitReadCloser struct {
-	Wait chan struct{}
-	io.ReadCloser
-}
-
-func (w *WaitReadCloser) Set(rc io.ReadCloser) {
-	w.ReadCloser = rc
-	defer func() {
-		if recover() != nil {
-			rc.Close()
-		}
-	}()
-	close(w.Wait)
-}
-
-func (w *WaitReadCloser) Read(b []byte) (int, error) {
-	if w.ReadCloser == nil {
-		if <-w.Wait; w.ReadCloser == nil {
-			return 0, io.ErrClosedPipe
-		}
-	}
-	return w.ReadCloser.Read(b)
-}
-
-func (w *WaitReadCloser) Close() error {
-	if w.ReadCloser != nil {
-		return w.ReadCloser.Close()
-	}
-	defer func() {
-		if recover() != nil && w.ReadCloser != nil {
-			w.ReadCloser.Close()
-		}
-	}()
-	close(w.Wait)
-	return nil
-}

transport/internet/http/http.go

@@ -1,3 +0,0 @@
-package http
-
-const protocolName = "http"

transport/internet/http/http_test.go

@@ -1,172 +0,0 @@
-package http_test
-
-import (
-	"context"
-	"crypto/rand"
-	"testing"
-	"time"
-
-	"github.com/google/go-cmp/cmp"
-	"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/tls/cert"
-	"github.com/xtls/xray-core/testing/servers/tcp"
-	"github.com/xtls/xray-core/testing/servers/udp"
-	"github.com/xtls/xray-core/transport/internet"
-	. "github.com/xtls/xray-core/transport/internet/http"
-	"github.com/xtls/xray-core/transport/internet/stat"
-	"github.com/xtls/xray-core/transport/internet/tls"
-)
-
-func TestHTTPConnection(t *testing.T) {
-	port := tcp.PickPort()
-
-	listener, err := Listen(context.Background(), net.LocalHostIP, port, &internet.MemoryStreamConfig{
-		ProtocolName:     "http",
-		ProtocolSettings: &Config{},
-		SecurityType:     "tls",
-		SecuritySettings: &tls.Config{
-			Certificate: []*tls.Certificate{tls.ParseCertificate(cert.MustGenerate(nil, cert.CommonName("www.example.com")))},
-		},
-	}, func(conn stat.Connection) {
-		go func() {
-			defer conn.Close()
-
-			b := buf.New()
-			defer b.Release()
-
-			for {
-				if _, err := b.ReadFrom(conn); err != nil {
-					return
-				}
-				_, err := conn.Write(b.Bytes())
-				common.Must(err)
-			}
-		}()
-	})
-	common.Must(err)
-
-	defer listener.Close()
-
-	time.Sleep(time.Second)
-
-	dctx := context.Background()
-	conn, err := Dial(dctx, net.TCPDestination(net.LocalHostIP, port), &internet.MemoryStreamConfig{
-		ProtocolName:     "http",
-		ProtocolSettings: &Config{},
-		SecurityType:     "tls",
-		SecuritySettings: &tls.Config{
-			ServerName:    "www.example.com",
-			AllowInsecure: true,
-		},
-	})
-	common.Must(err)
-	defer conn.Close()
-
-	const N = 1024
-	b1 := make([]byte, N)
-	common.Must2(rand.Read(b1))
-	b2 := buf.New()
-
-	nBytes, err := conn.Write(b1)
-	common.Must(err)
-	if nBytes != N {
-		t.Error("write: ", nBytes)
-	}
-
-	b2.Clear()
-	common.Must2(b2.ReadFullFrom(conn, N))
-	if r := cmp.Diff(b2.Bytes(), b1); r != "" {
-		t.Error(r)
-	}
-
-	nBytes, err = conn.Write(b1)
-	common.Must(err)
-	if nBytes != N {
-		t.Error("write: ", nBytes)
-	}
-
-	b2.Clear()
-	common.Must2(b2.ReadFullFrom(conn, N))
-	if r := cmp.Diff(b2.Bytes(), b1); r != "" {
-		t.Error(r)
-	}
-}
-
-func TestH3Connection(t *testing.T) {
-	port := udp.PickPort()
-
-	listener, err := Listen(context.Background(), net.LocalHostIP, port, &internet.MemoryStreamConfig{
-		ProtocolName:     "http",
-		ProtocolSettings: &Config{},
-		SecurityType:     "tls",
-		SecuritySettings: &tls.Config{
-			NextProtocol: []string{"h3"},
-			Certificate:  []*tls.Certificate{tls.ParseCertificate(cert.MustGenerate(nil, cert.CommonName("www.example.com")))},
-		},
-	}, func(conn stat.Connection) {
-		go func() {
-			defer conn.Close()
-
-			b := buf.New()
-			defer b.Release()
-
-			for {
-				if _, err := b.ReadFrom(conn); err != nil {
-					return
-				}
-				_, err := conn.Write(b.Bytes())
-				common.Must(err)
-			}
-		}()
-	})
-	common.Must(err)
-
-	defer listener.Close()
-
-	time.Sleep(time.Second)
-
-	dctx := context.Background()
-	conn, err := Dial(dctx, net.TCPDestination(net.LocalHostIP, port), &internet.MemoryStreamConfig{
-		ProtocolName:     "http",
-		ProtocolSettings: &Config{},
-		SecurityType:     "tls",
-		SecuritySettings: &tls.Config{
-			NextProtocol:  []string{"h3"},
-			ServerName:    "www.example.com",
-			AllowInsecure: true,
-		},
-	})
-	common.Must(err)
-	defer conn.Close()
-
-	const N = 1024
-	b1 := make([]byte, N)
-	common.Must2(rand.Read(b1))
-	b2 := buf.New()
-
-	nBytes, err := conn.Write(b1)
-	common.Must(err)
-	if nBytes != N {
-		t.Error("write: ", nBytes)
-	}
-
-	b2.Clear()
-	common.Must2(b2.ReadFullFrom(conn, N))
-	if r := cmp.Diff(b2.Bytes(), b1); r != "" {
-		t.Error(r)
-	}
-
-	nBytes, err = conn.Write(b1)
-	common.Must(err)
-	if nBytes != N {
-		t.Error("write: ", nBytes)
-	}
-
-	b2.Clear()
-	common.Must2(b2.ReadFullFrom(conn, N))
-	if r := cmp.Diff(b2.Bytes(), b1); r != "" {
-		t.Error(r)
-	}
-}

transport/internet/http/hub.go

@@ -1,252 +0,0 @@
-package http
-
-import (
-	"context"
-	gotls "crypto/tls"
-	"io"
-	"net/http"
-	"strings"
-	"time"
-
-	"github.com/quic-go/quic-go"
-	"github.com/quic-go/quic-go/http3"
-	goreality "github.com/xtls/reality"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/net/cnc"
-	http_proto "github.com/xtls/xray-core/common/protocol/http"
-	"github.com/xtls/xray-core/common/serial"
-	"github.com/xtls/xray-core/common/signal/done"
-	"github.com/xtls/xray-core/transport/internet"
-	"github.com/xtls/xray-core/transport/internet/reality"
-	"github.com/xtls/xray-core/transport/internet/tls"
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/h2c"
-)
-
-type Listener struct {
-	server   *http.Server
-	h3server *http3.Server
-	handler  internet.ConnHandler
-	local    net.Addr
-	config   *Config
-	isH3     bool
-}
-
-func (l *Listener) Addr() net.Addr {
-	return l.local
-}
-
-func (l *Listener) Close() error {
-	if l.h3server != nil {
-		if err := l.h3server.Close(); err != nil {
-			return err
-		}
-	} else if l.server != nil {
-		return l.server.Close()
-	}
-	return errors.New("listener does not have an HTTP/3 server or h2 server")
-}
-
-type flushWriter struct {
-	w io.Writer
-	d *done.Instance
-}
-
-func (fw flushWriter) Write(p []byte) (n int, err error) {
-	if fw.d.Done() {
-		return 0, io.ErrClosedPipe
-	}
-
-	defer func() {
-		if recover() != nil {
-			fw.d.Close()
-			err = io.ErrClosedPipe
-		}
-	}()
-
-	n, err = fw.w.Write(p)
-	if f, ok := fw.w.(http.Flusher); ok && err == nil {
-		f.Flush()
-	}
-	return
-}
-
-func (l *Listener) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
-	host := request.Host
-	if !l.config.isValidHost(host) {
-		writer.WriteHeader(404)
-		return
-	}
-	path := l.config.getNormalizedPath()
-	if !strings.HasPrefix(request.URL.Path, path) {
-		writer.WriteHeader(404)
-		return
-	}
-
-	writer.Header().Set("Cache-Control", "no-store")
-
-	for _, httpHeader := range l.config.Header {
-		for _, httpHeaderValue := range httpHeader.Value {
-			writer.Header().Set(httpHeader.Name, httpHeaderValue)
-		}
-	}
-
-	writer.WriteHeader(200)
-	if f, ok := writer.(http.Flusher); ok {
-		f.Flush()
-	}
-
-	remoteAddr := l.Addr()
-	dest, err := net.ParseDestination(request.RemoteAddr)
-	if err != nil {
-		errors.LogInfoInner(context.Background(), err, "failed to parse request remote addr: ", request.RemoteAddr)
-	} else {
-		remoteAddr = &net.TCPAddr{
-			IP:   dest.Address.IP(),
-			Port: int(dest.Port),
-		}
-	}
-
-	forwardedAddress := http_proto.ParseXForwardedFor(request.Header)
-	if len(forwardedAddress) > 0 && forwardedAddress[0].Family().IsIP() {
-		remoteAddr = &net.TCPAddr{
-			IP:   forwardedAddress[0].IP(),
-			Port: 0,
-		}
-	}
-
-	done := done.New()
-	conn := cnc.NewConnection(
-		cnc.ConnectionOutput(request.Body),
-		cnc.ConnectionInput(flushWriter{w: writer, d: done}),
-		cnc.ConnectionOnClose(common.ChainedClosable{done, request.Body}),
-		cnc.ConnectionLocalAddr(l.Addr()),
-		cnc.ConnectionRemoteAddr(remoteAddr),
-	)
-	l.handler(conn)
-	<-done.Wait()
-}
-
-func Listen(ctx context.Context, address net.Address, port net.Port, streamSettings *internet.MemoryStreamConfig, handler internet.ConnHandler) (internet.Listener, error) {
-	httpSettings := streamSettings.ProtocolSettings.(*Config)
-	config := tls.ConfigFromStreamSettings(streamSettings)
-	var tlsConfig *gotls.Config
-	if config == nil {
-		tlsConfig = &gotls.Config{}
-	} else {
-		tlsConfig = config.GetTLSConfig()
-	}
-	isH3 := len(tlsConfig.NextProtos) == 1 && tlsConfig.NextProtos[0] == "h3"
-	listener := &Listener{
-		handler: handler,
-		config:  httpSettings,
-		isH3:    isH3,
-	}
-	if port == net.Port(0) { // unix
-		listener.local = &net.UnixAddr{
-			Name: address.Domain(),
-			Net:  "unix",
-		}
-	} else if isH3 { // udp
-		listener.local = &net.UDPAddr{
-			IP:   address.IP(),
-			Port: int(port),
-		}
-	} else {
-		listener.local = &net.TCPAddr{
-			IP:   address.IP(),
-			Port: int(port),
-		}
-	}
-
-	if streamSettings.SocketSettings != nil && streamSettings.SocketSettings.AcceptProxyProtocol {
-		errors.LogWarning(ctx, "accepting PROXY protocol")
-	}
-
-	if isH3 {
-		Conn, err := internet.ListenSystemPacket(context.Background(), listener.local, streamSettings.SocketSettings)
-		if err != nil {
-			return nil, errors.New("failed to listen UDP(for SH3) on ", address, ":", port).Base(err)
-		}
-		h3listener, err := quic.ListenEarly(Conn, tlsConfig, nil)
-		if err != nil {
-			return nil, errors.New("failed to listen QUIC(for SH3) on ", address, ":", port).Base(err)
-		}
-		errors.LogInfo(ctx, "listening QUIC(for SH3) on ", address, ":", port)
-
-		listener.h3server = &http3.Server{
-			Handler: listener,
-		}
-		go func() {
-			if err := listener.h3server.ServeListener(h3listener); err != nil {
-				errors.LogWarningInner(ctx, err, "failed to serve http3 for splithttp")
-			}
-		}()
-	} else {
-		var server *http.Server
-		if config == nil {
-			h2s := &http2.Server{}
-
-			server = &http.Server{
-				Addr:              serial.Concat(address, ":", port),
-				Handler:           h2c.NewHandler(listener, h2s),
-				ReadHeaderTimeout: time.Second * 4,
-			}
-		} else {
-			server = &http.Server{
-				Addr:              serial.Concat(address, ":", port),
-				TLSConfig:         config.GetTLSConfig(tls.WithNextProto("h2")),
-				Handler:           listener,
-				ReadHeaderTimeout: time.Second * 4,
-			}
-		}
-
-		listener.server = server
-		go func() {
-			var streamListener net.Listener
-			var err error
-			if port == net.Port(0) { // unix
-				streamListener, err = internet.ListenSystem(ctx, &net.UnixAddr{
-					Name: address.Domain(),
-					Net:  "unix",
-				}, streamSettings.SocketSettings)
-				if err != nil {
-					errors.LogErrorInner(ctx, err, "failed to listen on ", address)
-					return
-				}
-			} else { // tcp
-				streamListener, err = internet.ListenSystem(ctx, &net.TCPAddr{
-					IP:   address.IP(),
-					Port: int(port),
-				}, streamSettings.SocketSettings)
-				if err != nil {
-					errors.LogErrorInner(ctx, err, "failed to listen on ", address, ":", port)
-					return
-				}
-			}
-
-			if config == nil {
-				if config := reality.ConfigFromStreamSettings(streamSettings); config != nil {
-					streamListener = goreality.NewListener(streamListener, config.GetREALITYConfig())
-				}
-				err = server.Serve(streamListener)
-				if err != nil {
-					errors.LogInfoInner(ctx, err, "stopping serving H2C or REALITY H2")
-				}
-			} else {
-				err = server.ServeTLS(streamListener, "", "")
-				if err != nil {
-					errors.LogInfoInner(ctx, err, "stopping serving TLS H2")
-				}
-			}
-		}()
-	}
-
-	return listener, nil
-}
-
-func init() {
-	common.Must(internet.RegisterTransportListener(protocolName, Listen))
-}

transport/internet/httpupgrade/dialer.go

@@ -53,9 +53,10 @@ func dialhttpUpgrade(ctx context.Context, dest net.Destination, streamSettings *
 
 	var conn net.Conn
 	var requestURL url.URL
-	if config := tls.ConfigFromStreamSettings(streamSettings); config != nil {
+	tConfig := tls.ConfigFromStreamSettings(streamSettings)
-		tlsConfig := config.GetTLSConfig(tls.WithDestination(dest), tls.WithNextProto("http/1.1"))
+	if tConfig != nil {
-		if fingerprint := tls.GetFingerprint(config.Fingerprint); fingerprint != nil {
+		tlsConfig := tConfig.GetTLSConfig(tls.WithDestination(dest), tls.WithNextProto("http/1.1"))
+		if fingerprint := tls.GetFingerprint(tConfig.Fingerprint); fingerprint != nil {
 			conn = tls.UClient(pconn, tlsConfig, fingerprint)
 			if err := conn.(*tls.UConn).WebsocketHandshakeContext(ctx); err != nil {
 				return nil, err
@@ -69,12 +70,17 @@ func dialhttpUpgrade(ctx context.Context, dest net.Destination, streamSettings *
 		requestURL.Scheme = "http"
 	}
 
-	requestURL.Host = dest.NetAddr()
+	requestURL.Host = transportConfiguration.Host
+	if requestURL.Host == "" && tConfig != nil {
+		requestURL.Host = tConfig.ServerName
+	}
+	if requestURL.Host == "" {
+		requestURL.Host = dest.Address.String()
+	}
 	requestURL.Path = transportConfiguration.GetNormalizedPath()
 	req := &http.Request{
 		Method: http.MethodGet,
 		URL:    &requestURL,
-		Host:   transportConfiguration.Host,
 		Header: make(http.Header),
 	}
 	for key, value := range transportConfiguration.Header {

transport/internet/sockopt_darwin.go

@@ -136,12 +136,6 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
 				return errors.New("failed to unset SO_KEEPALIVE", err)
 			}
 		}
-
-		if config.TcpNoDelay {
-			if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_NODELAY, 1); err != nil {
-				return errors.New("failed to set TCP_NODELAY", err)
-			}
-		}
 	}
 
 	return nil

transport/internet/sockopt_linux.go

@@ -103,11 +103,6 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
 			}
 		}
 
-		if config.TcpNoDelay {
-			if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, unix.TCP_NODELAY, 1); err != nil {
-				return errors.New("failed to set TCP_NODELAY", err)
-			}
-		}
 		if len(config.CustomSockopt) > 0 {
 			for _, custom := range config.CustomSockopt {
 				var level = 0x6 // default TCP

transport/internet/sockopt_windows.go

@@ -61,11 +61,6 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
 				return errors.New("failed to unset SO_KEEPALIVE", err)
 			}
 		}
-		if config.TcpNoDelay {
-			if err := syscall.SetsockoptInt(syscall.Handle(fd), syscall.IPPROTO_TCP, syscall.TCP_NODELAY, 1); err != nil {
-				return errors.New("failed to set TCP_NODELAY", err)
-			}
-		}
 	}
 
 	return nil

transport/internet/splithttp/browser_client.go

@@ -3,7 +3,6 @@ package splithttp
 import (
 	"context"
 	"io"
-	"io/ioutil"
 	gonet "net"
 
 	"github.com/xtls/xray-core/transport/internet/browser_dialer"
@@ -14,22 +13,26 @@ import (
 // has no fields because everything is global state :O)
 type BrowserDialerClient struct{}
 
-func (c *BrowserDialerClient) OpenUpload(ctx context.Context, baseURL string) io.WriteCloser {
+func (c *BrowserDialerClient) IsClosed() bool {
 	panic("not implemented yet")
 }
 
-func (c *BrowserDialerClient) OpenDownload(ctx context.Context, baseURL string) (io.ReadCloser, gonet.Addr, gonet.Addr, error) {
+func (c *BrowserDialerClient) OpenStream(ctx context.Context, url string, body io.Reader, uploadOnly bool) (io.ReadCloser, gonet.Addr, gonet.Addr, error) {
-	conn, err := browser_dialer.DialGet(baseURL)
+	if body != nil {
+		panic("not implemented yet")
+	}
+
+	conn, err := browser_dialer.DialGet(url)
 	dummyAddr := &gonet.IPAddr{}
 	if err != nil {
 		return nil, dummyAddr, dummyAddr, err
 	}
 
-	return websocket.NewConnection(conn, dummyAddr, nil), conn.RemoteAddr(), conn.LocalAddr(), nil
+	return websocket.NewConnection(conn, dummyAddr, nil, 0), conn.RemoteAddr(), conn.LocalAddr(), nil
 }
 
-func (c *BrowserDialerClient) SendUploadRequest(ctx context.Context, url string, payload io.ReadWriteCloser, contentLength int64) error {
+func (c *BrowserDialerClient) PostPacket(ctx context.Context, url string, body io.Reader, contentLength int64) error {
-	bytes, err := ioutil.ReadAll(payload)
+	bytes, err := io.ReadAll(body)
 	if err != nil {
 		return err
 	}

transport/internet/splithttp/client.go

@@ -18,140 +18,87 @@ import (
 
 // interface to abstract between use of browser dialer, vs net/http
 type DialerClient interface {
-	// (ctx, baseURL, payload) -> err
+	IsClosed() bool
-	// baseURL already contains sessionId and seq
-	SendUploadRequest(context.Context, string, io.ReadWriteCloser, int64) error
 
-	// (ctx, baseURL) -> (downloadReader, remoteAddr, localAddr)
+	// ctx, url, body, uploadOnly
-	// baseURL already contains sessionId
+	OpenStream(context.Context, string, io.Reader, bool) (io.ReadCloser, net.Addr, net.Addr, error)
-	OpenDownload(context.Context, string) (io.ReadCloser, net.Addr, net.Addr, error)
 
-	// (ctx, baseURL) -> uploadWriter
+	// ctx, url, body, contentLength
-	// baseURL already contains sessionId
+	PostPacket(context.Context, string, io.Reader, int64) error
-	OpenUpload(context.Context, string) io.WriteCloser
 }
 
 // implements splithttp.DialerClient in terms of direct network connections
 type DefaultDialerClient struct {
 	transportConfig *Config
 	client          *http.Client
-	isH2            bool
+	closed          bool
-	isH3            bool
+	httpVersion     string
 	// pool of net.Conn, created using dialUploadConn
 	uploadRawPool  *sync.Pool
 	dialUploadConn func(ctxInner context.Context) (net.Conn, error)
 }
 
-func (c *DefaultDialerClient) OpenUpload(ctx context.Context, baseURL string) io.WriteCloser {
+func (c *DefaultDialerClient) IsClosed() bool {
-	reader, writer := io.Pipe()
+	return c.closed
-	req, _ := http.NewRequestWithContext(ctx, "POST", baseURL, reader)
-	req.Header = c.transportConfig.GetRequestHeader()
-	if !c.transportConfig.NoGRPCHeader {
-		req.Header.Set("Content-Type", "application/grpc")
-	}
-	go c.client.Do(req)
-	return writer
 }
 
-func (c *DefaultDialerClient) OpenDownload(ctx context.Context, baseURL string) (io.ReadCloser, gonet.Addr, gonet.Addr, error) {
+func (c *DefaultDialerClient) OpenStream(ctx context.Context, url string, body io.Reader, uploadOnly bool) (wrc io.ReadCloser, remoteAddr, localAddr gonet.Addr, err error) {
-	var remoteAddr gonet.Addr
-	var localAddr gonet.Addr
 	// this is done when the TCP/UDP connection to the server was established,
 	// and we can unblock the Dial function and print correct net addresses in
 	// logs
 	gotConn := done.New()
+	ctx = httptrace.WithClientTrace(ctx, &httptrace.ClientTrace{
+		GotConn: func(connInfo httptrace.GotConnInfo) {
+			remoteAddr = connInfo.Conn.RemoteAddr()
+			localAddr = connInfo.Conn.LocalAddr()
+			gotConn.Close()
+		},
+	})
 
-	var downResponse io.ReadCloser
+	method := "GET"
-	gotDownResponse := done.New()
+	if body != nil {
-
+		method = "POST"
-	ctx, ctxCancel := context.WithCancel(ctx)
+	}
+	req, _ := http.NewRequestWithContext(ctx, method, url, body)
+	req.Header = c.transportConfig.GetRequestHeader()
+	if method == "POST" && !c.transportConfig.NoGRPCHeader {
+		req.Header.Set("Content-Type", "application/grpc")
+	}
 
+	wrc = &WaitReadCloser{Wait: make(chan struct{})}
 	go func() {
-		trace := &httptrace.ClientTrace{
+		resp, err := c.client.Do(req)
-			GotConn: func(connInfo httptrace.GotConnInfo) {
-				remoteAddr = connInfo.Conn.RemoteAddr()
-				localAddr = connInfo.Conn.LocalAddr()
-				gotConn.Close()
-			},
-		}
-
-		// in case we hit an error, we want to unblock this part
-		defer gotConn.Close()
-
-		ctx = httptrace.WithClientTrace(ctx, trace)
-
-		req, err := http.NewRequestWithContext(
-			ctx,
-			"GET",
-			baseURL,
-			nil,
-		)
 		if err != nil {
-			errors.LogInfoInner(ctx, err, "failed to construct download http request")
+			errors.LogInfoInner(ctx, err, "failed to "+method+" "+url)
-			gotDownResponse.Close()
+			gotConn.Close()
+			wrc.Close()
 			return
 		}
-
+		if resp.StatusCode != 200 && !uploadOnly {
-		req.Header = c.transportConfig.GetRequestHeader()
+			// c.closed = true
-
+			errors.LogInfo(ctx, "unexpected status ", resp.StatusCode)
-		response, err := c.client.Do(req)
+		}
-		gotConn.Close()
+		if resp.StatusCode != 200 || uploadOnly {
-		if err != nil {
+			resp.Body.Close()
-			errors.LogInfoInner(ctx, err, "failed to send download http request")
+			wrc.Close()
-			gotDownResponse.Close()
 			return
 		}
-
+		wrc.(*WaitReadCloser).Set(resp.Body)
-		if response.StatusCode != 200 {
-			response.Body.Close()
-			errors.LogInfo(ctx, "invalid status code on download:", response.Status)
-			gotDownResponse.Close()
-			return
-		}
-
-		downResponse = response.Body
-		gotDownResponse.Close()
 	}()
 
-	if !c.isH3 {
+	<-gotConn.Wait()
-		// in quic-go, sometimes gotConn is never closed for the lifetime of
+	return
-		// the entire connection, and the download locks up
-		// https://github.com/quic-go/quic-go/issues/3342
-		// for other HTTP versions, we want to block Dial until we know the
-		// remote address of the server, for logging purposes
-		<-gotConn.Wait()
-	}
-
-	lazyDownload := &LazyReader{
-		CreateReader: func() (io.Reader, error) {
-			<-gotDownResponse.Wait()
-			if downResponse == nil {
-				return nil, errors.New("downResponse failed")
-			}
-			return downResponse, nil
-		},
-	}
-
-	// workaround for https://github.com/quic-go/quic-go/issues/2143 --
-	// always cancel request context so that Close cancels any Read.
-	// Should then match the behavior of http2 and http1.
-	reader := downloadBody{
-		lazyDownload,
-		ctxCancel,
-	}
-
-	return reader, remoteAddr, localAddr, nil
 }
 
-func (c *DefaultDialerClient) SendUploadRequest(ctx context.Context, url string, payload io.ReadWriteCloser, contentLength int64) error {
+func (c *DefaultDialerClient) PostPacket(ctx context.Context, url string, body io.Reader, contentLength int64) error {
-	req, err := http.NewRequest("POST", url, payload)
+	req, err := http.NewRequestWithContext(ctx, "POST", url, body)
 	if err != nil {
 		return err
 	}
 	req.ContentLength = contentLength
 	req.Header = c.transportConfig.GetRequestHeader()
 
-	if c.isH2 || c.isH3 {
+	if c.httpVersion != "1.1" {
 		resp, err := c.client.Do(req)
 		if err != nil {
 			return err
@@ -160,6 +107,7 @@ func (c *DefaultDialerClient) SendUploadRequest(ctx context.Context, url string,
 		defer resp.Body.Close()
 
 		if resp.StatusCode != 200 {
+			// c.closed = true
 			return errors.New("bad status code:", resp.Status)
 		}
 	} else {
@@ -194,6 +142,8 @@ func (c *DefaultDialerClient) SendUploadRequest(ctx context.Context, url string,
 						return fmt.Errorf("error while reading response: %s", err.Error())
 					}
 					if resp.StatusCode != 200 {
+						// c.closed = true
+						// resp.Body.Close() // I'm not sure
 						return fmt.Errorf("got non-200 error response code: %d", resp.StatusCode)
 					}
 				}
@@ -217,12 +167,39 @@ func (c *DefaultDialerClient) SendUploadRequest(ctx context.Context, url string,
 	return nil
 }
 
-type downloadBody struct {
+type WaitReadCloser struct {
-	io.Reader
+	Wait chan struct{}
-	cancel context.CancelFunc
+	io.ReadCloser
 }
 
-func (c downloadBody) Close() error {
+func (w *WaitReadCloser) Set(rc io.ReadCloser) {
-	c.cancel()
+	w.ReadCloser = rc
+	defer func() {
+		if recover() != nil {
+			rc.Close()
+		}
+	}()
+	close(w.Wait)
+}
+
+func (w *WaitReadCloser) Read(b []byte) (int, error) {
+	if w.ReadCloser == nil {
+		if <-w.Wait; w.ReadCloser == nil {
+			return 0, io.ErrClosedPipe
+		}
+	}
+	return w.ReadCloser.Read(b)
+}
+
+func (w *WaitReadCloser) Close() error {
+	if w.ReadCloser != nil {
+		return w.ReadCloser.Close()
+	}
+	defer func() {
+		if recover() != nil && w.ReadCloser != nil {
+			w.ReadCloser.Close()
+		}
+	}()
+	close(w.Wait)
 	return nil
 }

transport/internet/splithttp/config.go

@@ -37,7 +37,7 @@ func (c *Config) GetNormalizedQuery() string {
 		query += "&"
 	}
 
-	paddingLen := c.GetNormalizedXPaddingBytes().roll()
+	paddingLen := c.GetNormalizedXPaddingBytes().rand()
 	if paddingLen > 0 {
 		query += "x_padding=" + strings.Repeat("0", int(paddingLen))
 	}
@@ -47,7 +47,7 @@ func (c *Config) GetNormalizedQuery() string {
 
 func (c *Config) GetRequestHeader() http.Header {
 	header := http.Header{}
-	for k, v := range c.Header {
+	for k, v := range c.Headers {
 		header.Add(k, v)
 	}
 
@@ -58,48 +58,15 @@ func (c *Config) WriteResponseHeader(writer http.ResponseWriter) {
 	// CORS headers for the browser dialer
 	writer.Header().Set("Access-Control-Allow-Origin", "*")
 	writer.Header().Set("Access-Control-Allow-Methods", "GET, POST")
-	paddingLen := c.GetNormalizedXPaddingBytes().roll()
+	paddingLen := c.GetNormalizedXPaddingBytes().rand()
 	if paddingLen > 0 {
 		writer.Header().Set("X-Padding", strings.Repeat("0", int(paddingLen)))
 	}
 }
 
-func (c *Config) GetNormalizedScMaxConcurrentPosts() RandRangeConfig {
+func (c *Config) GetNormalizedXPaddingBytes() RangeConfig {
-	if c.ScMaxConcurrentPosts == nil || c.ScMaxConcurrentPosts.To == 0 {
-		return RandRangeConfig{
-			From: 100,
-			To:   100,
-		}
-	}
-
-	return *c.ScMaxConcurrentPosts
-}
-
-func (c *Config) GetNormalizedScMaxEachPostBytes() RandRangeConfig {
-	if c.ScMaxEachPostBytes == nil || c.ScMaxEachPostBytes.To == 0 {
-		return RandRangeConfig{
-			From: 1000000,
-			To:   1000000,
-		}
-	}
-
-	return *c.ScMaxEachPostBytes
-}
-
-func (c *Config) GetNormalizedScMinPostsIntervalMs() RandRangeConfig {
-	if c.ScMinPostsIntervalMs == nil || c.ScMinPostsIntervalMs.To == 0 {
-		return RandRangeConfig{
-			From: 30,
-			To:   30,
-		}
-	}
-
-	return *c.ScMinPostsIntervalMs
-}
-
-func (c *Config) GetNormalizedXPaddingBytes() RandRangeConfig {
 	if c.XPaddingBytes == nil || c.XPaddingBytes.To == 0 {
-		return RandRangeConfig{
+		return RangeConfig{
 			From: 100,
 			To:   1000,
 		}
@@ -108,41 +75,39 @@ func (c *Config) GetNormalizedXPaddingBytes() RandRangeConfig {
 	return *c.XPaddingBytes
 }
 
-func (m *Multiplexing) GetNormalizedCMaxReuseTimes() RandRangeConfig {
+func (c *Config) GetNormalizedScMaxEachPostBytes() RangeConfig {
-	if m.CMaxReuseTimes == nil {
+	if c.ScMaxEachPostBytes == nil || c.ScMaxEachPostBytes.To == 0 {
-		return RandRangeConfig{
+		return RangeConfig{
-			From: 0,
+			From: 1000000,
-			To:   0,
+			To:   1000000,
 		}
 	}
 
-	return *m.CMaxReuseTimes
+	return *c.ScMaxEachPostBytes
 }
 
-func (m *Multiplexing) GetNormalizedCMaxLifetimeMs() RandRangeConfig {
+func (c *Config) GetNormalizedScMinPostsIntervalMs() RangeConfig {
-	if m.CMaxLifetimeMs == nil || m.CMaxLifetimeMs.To == 0 {
+	if c.ScMinPostsIntervalMs == nil || c.ScMinPostsIntervalMs.To == 0 {
-		return RandRangeConfig{
+		return RangeConfig{
-			From: 0,
+			From: 30,
-			To:   0,
+			To:   30,
-		}
-	}
-	return *m.CMaxLifetimeMs
-}
-
-func (m *Multiplexing) GetNormalizedMaxConnections() RandRangeConfig {
-	if m.MaxConnections == nil {
-		return RandRangeConfig{
-			From: 0,
-			To:   0,
 		}
 	}
 
-	return *m.MaxConnections
+	return *c.ScMinPostsIntervalMs
 }
 
-func (m *Multiplexing) GetNormalizedMaxConcurrency() RandRangeConfig {
+func (c *Config) GetNormalizedScMaxBufferedPosts() int {
+	if c.ScMaxBufferedPosts == 0 {
+		return 30
+	}
+
+	return int(c.ScMaxBufferedPosts)
+}
+
+func (m *XmuxConfig) GetNormalizedMaxConcurrency() RangeConfig {
 	if m.MaxConcurrency == nil {
-		return RandRangeConfig{
+		return RangeConfig{
 			From: 0,
 			To:   0,
 		}
@@ -151,13 +116,57 @@ func (m *Multiplexing) GetNormalizedMaxConcurrency() RandRangeConfig {
 	return *m.MaxConcurrency
 }
 
+func (m *XmuxConfig) GetNormalizedMaxConnections() RangeConfig {
+	if m.MaxConnections == nil {
+		return RangeConfig{
+			From: 0,
+			To:   0,
+		}
+	}
+
+	return *m.MaxConnections
+}
+
+func (m *XmuxConfig) GetNormalizedCMaxReuseTimes() RangeConfig {
+	if m.CMaxReuseTimes == nil {
+		return RangeConfig{
+			From: 0,
+			To:   0,
+		}
+	}
+
+	return *m.CMaxReuseTimes
+}
+
+func (m *XmuxConfig) GetNormalizedHMaxRequestTimes() RangeConfig {
+	if m.HMaxRequestTimes == nil {
+		return RangeConfig{
+			From: 0,
+			To:   0,
+		}
+	}
+
+	return *m.HMaxRequestTimes
+}
+
+func (m *XmuxConfig) GetNormalizedHMaxReusableSecs() RangeConfig {
+	if m.HMaxReusableSecs == nil {
+		return RangeConfig{
+			From: 0,
+			To:   0,
+		}
+	}
+
+	return *m.HMaxReusableSecs
+}
+
 func init() {
 	common.Must(internet.RegisterProtocolConfigCreator(protocolName, func() interface{} {
 		return new(Config)
 	}))
 }
 
-func (c RandRangeConfig) roll() int32 {
+func (c RangeConfig) rand() int32 {
 	if c.From == c.To {
 		return c.From
 	}

transport/internet/splithttp/config.pb.go

@@ -21,6 +21,144 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type RangeConfig struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	From int32 `protobuf:"varint,1,opt,name=from,proto3" json:"from,omitempty"`
+	To   int32 `protobuf:"varint,2,opt,name=to,proto3" json:"to,omitempty"`
+}
+
+func (x *RangeConfig) Reset() {
+	*x = RangeConfig{}
+	mi := &file_transport_internet_splithttp_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *RangeConfig) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeConfig) ProtoMessage() {}
+
+func (x *RangeConfig) ProtoReflect() protoreflect.Message {
+	mi := &file_transport_internet_splithttp_config_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeConfig.ProtoReflect.Descriptor instead.
+func (*RangeConfig) Descriptor() ([]byte, []int) {
+	return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *RangeConfig) GetFrom() int32 {
+	if x != nil {
+		return x.From
+	}
+	return 0
+}
+
+func (x *RangeConfig) GetTo() int32 {
+	if x != nil {
+		return x.To
+	}
+	return 0
+}
+
+type XmuxConfig struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	MaxConcurrency   *RangeConfig `protobuf:"bytes,1,opt,name=maxConcurrency,proto3" json:"maxConcurrency,omitempty"`
+	MaxConnections   *RangeConfig `protobuf:"bytes,2,opt,name=maxConnections,proto3" json:"maxConnections,omitempty"`
+	CMaxReuseTimes   *RangeConfig `protobuf:"bytes,3,opt,name=cMaxReuseTimes,proto3" json:"cMaxReuseTimes,omitempty"`
+	HMaxRequestTimes *RangeConfig `protobuf:"bytes,4,opt,name=hMaxRequestTimes,proto3" json:"hMaxRequestTimes,omitempty"`
+	HMaxReusableSecs *RangeConfig `protobuf:"bytes,5,opt,name=hMaxReusableSecs,proto3" json:"hMaxReusableSecs,omitempty"`
+	HKeepAlivePeriod int64        `protobuf:"varint,6,opt,name=hKeepAlivePeriod,proto3" json:"hKeepAlivePeriod,omitempty"`
+}
+
+func (x *XmuxConfig) Reset() {
+	*x = XmuxConfig{}
+	mi := &file_transport_internet_splithttp_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *XmuxConfig) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*XmuxConfig) ProtoMessage() {}
+
+func (x *XmuxConfig) ProtoReflect() protoreflect.Message {
+	mi := &file_transport_internet_splithttp_config_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use XmuxConfig.ProtoReflect.Descriptor instead.
+func (*XmuxConfig) Descriptor() ([]byte, []int) {
+	return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *XmuxConfig) GetMaxConcurrency() *RangeConfig {
+	if x != nil {
+		return x.MaxConcurrency
+	}
+	return nil
+}
+
+func (x *XmuxConfig) GetMaxConnections() *RangeConfig {
+	if x != nil {
+		return x.MaxConnections
+	}
+	return nil
+}
+
+func (x *XmuxConfig) GetCMaxReuseTimes() *RangeConfig {
+	if x != nil {
+		return x.CMaxReuseTimes
+	}
+	return nil
+}
+
+func (x *XmuxConfig) GetHMaxRequestTimes() *RangeConfig {
+	if x != nil {
+		return x.HMaxRequestTimes
+	}
+	return nil
+}
+
+func (x *XmuxConfig) GetHMaxReusableSecs() *RangeConfig {
+	if x != nil {
+		return x.HMaxReusableSecs
+	}
+	return nil
+}
+
+func (x *XmuxConfig) GetHKeepAlivePeriod() int64 {
+	if x != nil {
+		return x.HKeepAlivePeriod
+	}
+	return 0
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -28,21 +166,21 @@ type Config struct {
 
 	Host                 string                 `protobuf:"bytes,1,opt,name=host,proto3" json:"host,omitempty"`
 	Path                 string                 `protobuf:"bytes,2,opt,name=path,proto3" json:"path,omitempty"`
-	Header               map[string]string      `protobuf:"bytes,3,rep,name=header,proto3" json:"header,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	Mode                 string                 `protobuf:"bytes,3,opt,name=mode,proto3" json:"mode,omitempty"`
-	ScMaxConcurrentPosts *RandRangeConfig       `protobuf:"bytes,4,opt,name=scMaxConcurrentPosts,proto3" json:"scMaxConcurrentPosts,omitempty"`
+	Headers              map[string]string      `protobuf:"bytes,4,rep,name=headers,proto3" json:"headers,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
-	ScMaxEachPostBytes   *RandRangeConfig       `protobuf:"bytes,5,opt,name=scMaxEachPostBytes,proto3" json:"scMaxEachPostBytes,omitempty"`
+	XPaddingBytes        *RangeConfig           `protobuf:"bytes,5,opt,name=xPaddingBytes,proto3" json:"xPaddingBytes,omitempty"`
-	ScMinPostsIntervalMs *RandRangeConfig       `protobuf:"bytes,6,opt,name=scMinPostsIntervalMs,proto3" json:"scMinPostsIntervalMs,omitempty"`
+	NoGRPCHeader         bool                   `protobuf:"varint,6,opt,name=noGRPCHeader,proto3" json:"noGRPCHeader,omitempty"`
 	NoSSEHeader          bool                   `protobuf:"varint,7,opt,name=noSSEHeader,proto3" json:"noSSEHeader,omitempty"`
-	XPaddingBytes        *RandRangeConfig       `protobuf:"bytes,8,opt,name=xPaddingBytes,proto3" json:"xPaddingBytes,omitempty"`
+	ScMaxEachPostBytes   *RangeConfig           `protobuf:"bytes,8,opt,name=scMaxEachPostBytes,proto3" json:"scMaxEachPostBytes,omitempty"`
-	Xmux                 *Multiplexing          `protobuf:"bytes,9,opt,name=xmux,proto3" json:"xmux,omitempty"`
+	ScMinPostsIntervalMs *RangeConfig           `protobuf:"bytes,9,opt,name=scMinPostsIntervalMs,proto3" json:"scMinPostsIntervalMs,omitempty"`
-	DownloadSettings     *internet.StreamConfig `protobuf:"bytes,10,opt,name=downloadSettings,proto3" json:"downloadSettings,omitempty"`
+	ScMaxBufferedPosts   int64                  `protobuf:"varint,10,opt,name=scMaxBufferedPosts,proto3" json:"scMaxBufferedPosts,omitempty"`
-	Mode                 string                 `protobuf:"bytes,11,opt,name=mode,proto3" json:"mode,omitempty"`
+	Xmux                 *XmuxConfig            `protobuf:"bytes,11,opt,name=xmux,proto3" json:"xmux,omitempty"`
-	NoGRPCHeader         bool                   `protobuf:"varint,12,opt,name=noGRPCHeader,proto3" json:"noGRPCHeader,omitempty"`
+	DownloadSettings     *internet.StreamConfig `protobuf:"bytes,12,opt,name=downloadSettings,proto3" json:"downloadSettings,omitempty"`
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	mi := &file_transport_internet_splithttp_config_proto_msgTypes[0]
+	mi := &file_transport_internet_splithttp_config_proto_msgTypes[2]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -54,7 +192,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_transport_internet_splithttp_config_proto_msgTypes[0]
+	mi := &file_transport_internet_splithttp_config_proto_msgTypes[2]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -67,7 +205,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{0}
+	return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Config) GetHost() string {
@@ -84,62 +222,6 @@ func (x *Config) GetPath() string {
 	return ""
 }
 
-func (x *Config) GetHeader() map[string]string {
-	if x != nil {
-		return x.Header
-	}
-	return nil
-}
-
-func (x *Config) GetScMaxConcurrentPosts() *RandRangeConfig {
-	if x != nil {
-		return x.ScMaxConcurrentPosts
-	}
-	return nil
-}
-
-func (x *Config) GetScMaxEachPostBytes() *RandRangeConfig {
-	if x != nil {
-		return x.ScMaxEachPostBytes
-	}
-	return nil
-}
-
-func (x *Config) GetScMinPostsIntervalMs() *RandRangeConfig {
-	if x != nil {
-		return x.ScMinPostsIntervalMs
-	}
-	return nil
-}
-
-func (x *Config) GetNoSSEHeader() bool {
-	if x != nil {
-		return x.NoSSEHeader
-	}
-	return false
-}
-
-func (x *Config) GetXPaddingBytes() *RandRangeConfig {
-	if x != nil {
-		return x.XPaddingBytes
-	}
-	return nil
-}
-
-func (x *Config) GetXmux() *Multiplexing {
-	if x != nil {
-		return x.Xmux
-	}
-	return nil
-}
-
-func (x *Config) GetDownloadSettings() *internet.StreamConfig {
-	if x != nil {
-		return x.DownloadSettings
-	}
-	return nil
-}
-
 func (x *Config) GetMode() string {
 	if x != nil {
 		return x.Mode
@@ -147,6 +229,20 @@ func (x *Config) GetMode() string {
 	return ""
 }
 
+func (x *Config) GetHeaders() map[string]string {
+	if x != nil {
+		return x.Headers
+	}
+	return nil
+}
+
+func (x *Config) GetXPaddingBytes() *RangeConfig {
+	if x != nil {
+		return x.XPaddingBytes
+	}
+	return nil
+}
+
 func (x *Config) GetNoGRPCHeader() bool {
 	if x != nil {
 		return x.NoGRPCHeader
@@ -154,124 +250,44 @@ func (x *Config) GetNoGRPCHeader() bool {
 	return false
 }
 
-type RandRangeConfig struct {
+func (x *Config) GetNoSSEHeader() bool {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	From int32 `protobuf:"varint,1,opt,name=from,proto3" json:"from,omitempty"`
-	To   int32 `protobuf:"varint,2,opt,name=to,proto3" json:"to,omitempty"`
-}
-
-func (x *RandRangeConfig) Reset() {
-	*x = RandRangeConfig{}
-	mi := &file_transport_internet_splithttp_config_proto_msgTypes[1]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *RandRangeConfig) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*RandRangeConfig) ProtoMessage() {}
-
-func (x *RandRangeConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_transport_internet_splithttp_config_proto_msgTypes[1]
 	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		return x.NoSSEHeader
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
 	}
-	return mi.MessageOf(x)
+	return false
 }
 
-// Deprecated: Use RandRangeConfig.ProtoReflect.Descriptor instead.
+func (x *Config) GetScMaxEachPostBytes() *RangeConfig {
-func (*RandRangeConfig) Descriptor() ([]byte, []int) {
-	return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *RandRangeConfig) GetFrom() int32 {
 	if x != nil {
-		return x.From
+		return x.ScMaxEachPostBytes
+	}
+	return nil
+}
+
+func (x *Config) GetScMinPostsIntervalMs() *RangeConfig {
+	if x != nil {
+		return x.ScMinPostsIntervalMs
+	}
+	return nil
+}
+
+func (x *Config) GetScMaxBufferedPosts() int64 {
+	if x != nil {
+		return x.ScMaxBufferedPosts
 	}
 	return 0
 }
 
-func (x *RandRangeConfig) GetTo() int32 {
+func (x *Config) GetXmux() *XmuxConfig {
 	if x != nil {
-		return x.To
+		return x.Xmux
-	}
-	return 0
-}
-
-type Multiplexing struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	MaxConcurrency *RandRangeConfig `protobuf:"bytes,1,opt,name=maxConcurrency,proto3" json:"maxConcurrency,omitempty"`
-	MaxConnections *RandRangeConfig `protobuf:"bytes,2,opt,name=maxConnections,proto3" json:"maxConnections,omitempty"`
-	CMaxReuseTimes *RandRangeConfig `protobuf:"bytes,3,opt,name=cMaxReuseTimes,proto3" json:"cMaxReuseTimes,omitempty"`
-	CMaxLifetimeMs *RandRangeConfig `protobuf:"bytes,4,opt,name=cMaxLifetimeMs,proto3" json:"cMaxLifetimeMs,omitempty"`
-}
-
-func (x *Multiplexing) Reset() {
-	*x = Multiplexing{}
-	mi := &file_transport_internet_splithttp_config_proto_msgTypes[2]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *Multiplexing) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Multiplexing) ProtoMessage() {}
-
-func (x *Multiplexing) ProtoReflect() protoreflect.Message {
-	mi := &file_transport_internet_splithttp_config_proto_msgTypes[2]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Multiplexing.ProtoReflect.Descriptor instead.
-func (*Multiplexing) Descriptor() ([]byte, []int) {
-	return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{2}
-}
-
-func (x *Multiplexing) GetMaxConcurrency() *RandRangeConfig {
-	if x != nil {
-		return x.MaxConcurrency
 	}
 	return nil
 }
 
-func (x *Multiplexing) GetMaxConnections() *RandRangeConfig {
+func (x *Config) GetDownloadSettings() *internet.StreamConfig {
 	if x != nil {
-		return x.MaxConnections
+		return x.DownloadSettings
-	}
-	return nil
-}
-
-func (x *Multiplexing) GetCMaxReuseTimes() *RandRangeConfig {
-	if x != nil {
-		return x.CMaxReuseTimes
-	}
-	return nil
-}
-
-func (x *Multiplexing) GetCMaxLifetimeMs() *RandRangeConfig {
-	if x != nil {
-		return x.CMaxLifetimeMs
 	}
 	return nil
 }
@@ -286,95 +302,98 @@ var file_transport_internet_splithttp_config_proto_rawDesc = []byte{
 	0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0x1a, 0x1f,
 	0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e,
 	0x65, 0x74, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22,
-	0xba, 0x06, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x68, 0x6f,
+	0x31, 0x0a, 0x0b, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x12,
-	0x73, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x68, 0x6f, 0x73, 0x74, 0x12, 0x12,
+	0x0a, 0x04, 0x66, 0x72, 0x6f, 0x6d, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x04, 0x66, 0x72,
-	0x0a, 0x04, 0x70, 0x61, 0x74, 0x68, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x70, 0x61,
+	0x6f, 0x6d, 0x12, 0x0e, 0x0a, 0x02, 0x74, 0x6f, 0x18, 0x02, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02,
-	0x74, 0x68, 0x12, 0x4d, 0x0a, 0x06, 0x68, 0x65, 0x61, 0x64, 0x65, 0x72, 0x18, 0x03, 0x20, 0x03,
+	0x74, 0x6f, 0x22, 0xf8, 0x03, 0x0a, 0x0a, 0x58, 0x6d, 0x75, 0x78, 0x43, 0x6f, 0x6e, 0x66, 0x69,
-	0x28, 0x0b, 0x32, 0x35, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70,
+	0x67, 0x12, 0x56, 0x0a, 0x0e, 0x6d, 0x61, 0x78, 0x43, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65,
-	0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c,
+	0x6e, 0x63, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x2e, 0x2e, 0x78, 0x72, 0x61, 0x79,
-	0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0x2e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x48, 0x65,
+	0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72,
-	0x61, 0x64, 0x65, 0x72, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x06, 0x68, 0x65, 0x61, 0x64, 0x65,
+	0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0x2e, 0x52, 0x61,
-	0x72, 0x12, 0x66, 0x0a, 0x14, 0x73, 0x63, 0x4d, 0x61, 0x78, 0x43, 0x6f, 0x6e, 0x63, 0x75, 0x72,
+	0x6e, 0x67, 0x65, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0e, 0x6d, 0x61, 0x78, 0x43, 0x6f,
-	0x72, 0x65, 0x6e, 0x74, 0x50, 0x6f, 0x73, 0x74, 0x73, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0b, 0x32,
+	0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x12, 0x56, 0x0a, 0x0e, 0x6d, 0x61, 0x78,
-	0x32, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74,
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-	0x32, 0x32, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72,
 	0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c, 0x69, 0x74,
-	0x68, 0x74, 0x74, 0x70, 0x2e, 0x52, 0x61, 0x6e, 0x64, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x43, 0x6f,
+	0x68, 0x74, 0x74, 0x70, 0x2e, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
-	0x6e, 0x66, 0x69, 0x67, 0x52, 0x0e, 0x63, 0x4d, 0x61, 0x78, 0x4c, 0x69, 0x66, 0x65, 0x74, 0x69,
+	0x52, 0x14, 0x73, 0x63, 0x4d, 0x69, 0x6e, 0x50, 0x6f, 0x73, 0x74, 0x73, 0x49, 0x6e, 0x74, 0x65,
-	0x6d, 0x65, 0x4d, 0x73, 0x42, 0x85, 0x01, 0x0a, 0x25, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61,
+	0x72, 0x76, 0x61, 0x6c, 0x4d, 0x73, 0x12, 0x2e, 0x0a, 0x12, 0x73, 0x63, 0x4d, 0x61, 0x78, 0x42,
-	0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65,
+	0x75, 0x66, 0x66, 0x65, 0x72, 0x65, 0x64, 0x50, 0x6f, 0x73, 0x74, 0x73, 0x18, 0x0a, 0x20, 0x01,
-	0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0x50, 0x01,
+	0x28, 0x03, 0x52, 0x12, 0x73, 0x63, 0x4d, 0x61, 0x78, 0x42, 0x75, 0x66, 0x66, 0x65, 0x72, 0x65,
-	0x5a, 0x36, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
+	0x64, 0x50, 0x6f, 0x73, 0x74, 0x73, 0x12, 0x41, 0x0a, 0x04, 0x78, 0x6d, 0x75, 0x78, 0x18, 0x0b,
-	0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e,
+	0x20, 0x01, 0x28, 0x0b, 0x32, 0x2d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e,
-	0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2f, 0x73,
+	0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73,
-	0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0xaa, 0x02, 0x21, 0x58, 0x72, 0x61, 0x79, 0x2e,
+	0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0x2e, 0x58, 0x6d, 0x75, 0x78, 0x43, 0x6f, 0x6e,
-	0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e,
+	0x66, 0x69, 0x67, 0x52, 0x04, 0x78, 0x6d, 0x75, 0x78, 0x12, 0x51, 0x0a, 0x10, 0x64, 0x6f, 0x77,
-	0x65, 0x74, 0x2e, 0x53, 0x70, 0x6c, 0x69, 0x74, 0x48, 0x74, 0x74, 0x70, 0x62, 0x06, 0x70, 0x72,
+	0x6e, 0x6c, 0x6f, 0x61, 0x64, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x0c, 0x20,
-	0x6f, 0x74, 0x6f, 0x33,
+	0x01, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73,
+	0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x53, 0x74,
+	0x72, 0x65, 0x61, 0x6d, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x10, 0x64, 0x6f, 0x77, 0x6e,
+	0x6c, 0x6f, 0x61, 0x64, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x1a, 0x3a, 0x0a, 0x0c,
+	0x48, 0x65, 0x61, 0x64, 0x65, 0x72, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03,
+	0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14,
+	0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x76,
+	0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x42, 0x85, 0x01, 0x0a, 0x25, 0x63, 0x6f, 0x6d,
+	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e,
+	0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c, 0x69, 0x74, 0x68, 0x74,
+	0x74, 0x70, 0x50, 0x01, 0x5a, 0x36, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
+	0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f,
+	0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e,
+	0x65, 0x74, 0x2f, 0x73, 0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0xaa, 0x02, 0x21, 0x58,
+	0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x49, 0x6e,
+	0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x53, 0x70, 0x6c, 0x69, 0x74, 0x48, 0x74, 0x74, 0x70,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -391,24 +410,24 @@ func file_transport_internet_splithttp_config_proto_rawDescGZIP() []byte {
 
 var file_transport_internet_splithttp_config_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
 var file_transport_internet_splithttp_config_proto_goTypes = []any{
-	(*Config)(nil),                // 0: xray.transport.internet.splithttp.Config
+	(*RangeConfig)(nil),           // 0: xray.transport.internet.splithttp.RangeConfig
-	(*RandRangeConfig)(nil),       // 1: xray.transport.internet.splithttp.RandRangeConfig
+	(*XmuxConfig)(nil),            // 1: xray.transport.internet.splithttp.XmuxConfig
-	(*Multiplexing)(nil),          // 2: xray.transport.internet.splithttp.Multiplexing
+	(*Config)(nil),                // 2: xray.transport.internet.splithttp.Config
-	nil,                           // 3: xray.transport.internet.splithttp.Config.HeaderEntry
+	nil,                           // 3: xray.transport.internet.splithttp.Config.HeadersEntry
 	(*internet.StreamConfig)(nil), // 4: xray.transport.internet.StreamConfig
 }
 var file_transport_internet_splithttp_config_proto_depIdxs = []int32{
-	3,  // 0: xray.transport.internet.splithttp.Config.header:type_name -> xray.transport.internet.splithttp.Config.HeaderEntry
+	0,  // 0: xray.transport.internet.splithttp.XmuxConfig.maxConcurrency:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 1: xray.transport.internet.splithttp.Config.scMaxConcurrentPosts:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	0,  // 1: xray.transport.internet.splithttp.XmuxConfig.maxConnections:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 2: xray.transport.internet.splithttp.Config.scMaxEachPostBytes:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	0,  // 2: xray.transport.internet.splithttp.XmuxConfig.cMaxReuseTimes:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 3: xray.transport.internet.splithttp.Config.scMinPostsIntervalMs:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	0,  // 3: xray.transport.internet.splithttp.XmuxConfig.hMaxRequestTimes:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 4: xray.transport.internet.splithttp.Config.xPaddingBytes:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	0,  // 4: xray.transport.internet.splithttp.XmuxConfig.hMaxReusableSecs:type_name -> xray.transport.internet.splithttp.RangeConfig
-	2,  // 5: xray.transport.internet.splithttp.Config.xmux:type_name -> xray.transport.internet.splithttp.Multiplexing
+	3,  // 5: xray.transport.internet.splithttp.Config.headers:type_name -> xray.transport.internet.splithttp.Config.HeadersEntry
-	4,  // 6: xray.transport.internet.splithttp.Config.downloadSettings:type_name -> xray.transport.internet.StreamConfig
+	0,  // 6: xray.transport.internet.splithttp.Config.xPaddingBytes:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 7: xray.transport.internet.splithttp.Multiplexing.maxConcurrency:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	0,  // 7: xray.transport.internet.splithttp.Config.scMaxEachPostBytes:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 8: xray.transport.internet.splithttp.Multiplexing.maxConnections:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	0,  // 8: xray.transport.internet.splithttp.Config.scMinPostsIntervalMs:type_name -> xray.transport.internet.splithttp.RangeConfig
-	1,  // 9: xray.transport.internet.splithttp.Multiplexing.cMaxReuseTimes:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	1,  // 9: xray.transport.internet.splithttp.Config.xmux:type_name -> xray.transport.internet.splithttp.XmuxConfig
-	1,  // 10: xray.transport.internet.splithttp.Multiplexing.cMaxLifetimeMs:type_name -> xray.transport.internet.splithttp.RandRangeConfig
+	4,  // 10: xray.transport.internet.splithttp.Config.downloadSettings:type_name -> xray.transport.internet.StreamConfig
 	11, // [11:11] is the sub-list for method output_type
 	11, // [11:11] is the sub-list for method input_type
 	11, // [11:11] is the sub-list for extension type_name

transport/internet/splithttp/config.proto

@@ -8,29 +8,31 @@ option java_multiple_files = true;
 
 import "transport/internet/config.proto";
 
+message RangeConfig {
+  int32 from = 1;
+  int32 to = 2;
+}
+
+message XmuxConfig {
+  RangeConfig maxConcurrency = 1;
+  RangeConfig maxConnections = 2;
+  RangeConfig cMaxReuseTimes = 3;
+  RangeConfig hMaxRequestTimes = 4;
+  RangeConfig hMaxReusableSecs = 5;
+  int64 hKeepAlivePeriod = 6;
+}
+
 message Config {
   string host = 1;
   string path = 2;
-  map<string, string> header = 3;
+  string mode = 3;
-  RandRangeConfig scMaxConcurrentPosts = 4;
+  map<string, string> headers = 4;
-  RandRangeConfig scMaxEachPostBytes = 5;
+  RangeConfig xPaddingBytes = 5;
-  RandRangeConfig scMinPostsIntervalMs = 6;
+  bool noGRPCHeader = 6;
   bool noSSEHeader = 7;
-  RandRangeConfig xPaddingBytes = 8;
+  RangeConfig scMaxEachPostBytes = 8;
-  Multiplexing xmux = 9;
+  RangeConfig scMinPostsIntervalMs = 9;
-  xray.transport.internet.StreamConfig downloadSettings = 10;
+  int64 scMaxBufferedPosts = 10;
-  string mode = 11;
+  XmuxConfig xmux = 11;
-  bool noGRPCHeader = 12;
+  xray.transport.internet.StreamConfig downloadSettings = 12;
-}
-
-message RandRangeConfig {
-    int32 from = 1;
-    int32 to = 2;
-}
-
-message Multiplexing {
-  RandRangeConfig maxConcurrency = 1;
-  RandRangeConfig maxConnections = 2;
-  RandRangeConfig cMaxReuseTimes = 3;
-  RandRangeConfig cMaxLifetimeMs = 4;
 }

transport/internet/splithttp/dialer.go

@@ -3,19 +3,23 @@ package splithttp
 import (
 	"context"
 	gotls "crypto/tls"
+	"fmt"
+	"io"
 	"net/http"
+	"net/http/httptrace"
 	"net/url"
 	"strconv"
 	"sync"
+	"sync/atomic"
 	"time"
 
-	"github.com/quic-go/quic-go"
+	"github.com/xtls/quic-go"
-	"github.com/quic-go/quic-go/http3"
+	"github.com/xtls/quic-go/http3"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/signal/semaphore"
+	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/common/uuid"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/browser_dialer"
@@ -31,10 +35,10 @@ import (
 const connIdleTimeout = 300 * time.Second
 
 // consistent with quic-go
-const h3KeepalivePeriod = 10 * time.Second
+const quicgoH3KeepAlivePeriod = 10 * time.Second
 
 // consistent with chrome
-const h2KeepalivePeriod = 45 * time.Second
+const chromeH2KeepAlivePeriod = 45 * time.Second
 
 type dialerConf struct {
 	net.Destination
@@ -42,11 +46,11 @@ type dialerConf struct {
 }
 
 var (
-	globalDialerMap    map[dialerConf]*muxManager
+	globalDialerMap    map[dialerConf]*XmuxManager
 	globalDialerAccess sync.Mutex
 )
 
-func getHTTPClient(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (DialerClient, *muxResource) {
+func getHTTPClient(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (DialerClient, *XmuxClient) {
 	realityConfig := reality.ConfigFromStreamSettings(streamSettings)
 
 	if browser_dialer.HasBrowserDialer() && realityConfig != nil {
@@ -57,47 +61,56 @@ func getHTTPClient(ctx context.Context, dest net.Destination, streamSettings *in
 	defer globalDialerAccess.Unlock()
 
 	if globalDialerMap == nil {
-		globalDialerMap = make(map[dialerConf]*muxManager)
+		globalDialerMap = make(map[dialerConf]*XmuxManager)
 	}
 
 	key := dialerConf{dest, streamSettings}
 
-	muxManager, found := globalDialerMap[key]
+	xmuxManager, found := globalDialerMap[key]
 
 	if !found {
 		transportConfig := streamSettings.ProtocolSettings.(*Config)
-		var mux Multiplexing
+		var xmuxConfig XmuxConfig
 		if transportConfig.Xmux != nil {
-			mux = *transportConfig.Xmux
+			xmuxConfig = *transportConfig.Xmux
 		}
 
-		muxManager = NewMuxManager(mux, func() interface{} {
+		xmuxManager = NewXmuxManager(xmuxConfig, func() XmuxConn {
 			return createHTTPClient(dest, streamSettings)
 		})
-		globalDialerMap[key] = muxManager
+		globalDialerMap[key] = xmuxManager
 	}
 
-	res := muxManager.GetResource(ctx)
+	xmuxClient := xmuxManager.GetXmuxClient(ctx)
-	return res.Resource.(DialerClient), res
+	return xmuxClient.XmuxConn.(DialerClient), xmuxClient
+}
+
+func decideHTTPVersion(tlsConfig *tls.Config, realityConfig *reality.Config) string {
+	if realityConfig != nil {
+		return "2"
+	}
+	if tlsConfig == nil {
+		return "1.1"
+	}
+	if len(tlsConfig.NextProtocol) != 1 {
+		return "2"
+	}
+	if tlsConfig.NextProtocol[0] == "http/1.1" {
+		return "1.1"
+	}
+	if tlsConfig.NextProtocol[0] == "h3" {
+		return "3"
+	}
+	return "2"
 }
 
 func createHTTPClient(dest net.Destination, streamSettings *internet.MemoryStreamConfig) DialerClient {
 	tlsConfig := tls.ConfigFromStreamSettings(streamSettings)
 	realityConfig := reality.ConfigFromStreamSettings(streamSettings)
 
-	isH2 := false
+	httpVersion := decideHTTPVersion(tlsConfig, realityConfig)
-	isH3 := false
+	if httpVersion == "3" {
-
+		dest.Network = net.Network_UDP // better to keep this line
-	if tlsConfig != nil {
-		isH2 = !(len(tlsConfig.NextProtocol) == 1 && tlsConfig.NextProtocol[0] == "http/1.1")
-		isH3 = len(tlsConfig.NextProtocol) == 1 && tlsConfig.NextProtocol[0] == "h3"
-	} else if realityConfig != nil {
-		isH2 = true
-		isH3 = false
-	}
-
-	if isH3 {
-		dest.Network = net.Network_UDP
 	}
 
 	var gotlsConfig *gotls.Config
@@ -132,9 +145,20 @@ func createHTTPClient(dest net.Destination, streamSettings *internet.MemoryStrea
 		return conn, nil
 	}
 
+	var keepAlivePeriod time.Duration
+	if streamSettings.ProtocolSettings.(*Config).Xmux != nil {
+		keepAlivePeriod = time.Duration(streamSettings.ProtocolSettings.(*Config).Xmux.HKeepAlivePeriod) * time.Second
+	}
+
 	var transport http.RoundTripper
 
-	if isH3 {
+	if httpVersion == "3" {
+		if keepAlivePeriod == 0 {
+			keepAlivePeriod = quicgoH3KeepAlivePeriod
+		}
+		if keepAlivePeriod < 0 {
+			keepAlivePeriod = 0
+		}
 		quicConfig := &quic.Config{
 			MaxIdleTimeout: connIdleTimeout,
 
@@ -142,7 +166,7 @@ func createHTTPClient(dest net.Destination, streamSettings *internet.MemoryStrea
 			// http3) is different, so it is hardcoded here for clarity.
 			// https://github.com/quic-go/quic-go/blob/b8ea5c798155950fb5bbfdd06cad1939c9355878/http3/client.go#L36-L39
 			MaxIncomingStreams: -1,
-			KeepAlivePeriod:    h3KeepalivePeriod,
+			KeepAlivePeriod:    keepAlivePeriod,
 		}
 		transport = &http3.RoundTripper{
 			QUICConfig:      quicConfig,
@@ -184,13 +208,19 @@ func createHTTPClient(dest net.Destination, streamSettings *internet.MemoryStrea
 				return quic.DialEarly(ctx, udpConn, udpAddr, tlsCfg, cfg)
 			},
 		}
-	} else if isH2 {
+	} else if httpVersion == "2" {
+		if keepAlivePeriod == 0 {
+			keepAlivePeriod = chromeH2KeepAlivePeriod
+		}
+		if keepAlivePeriod < 0 {
+			keepAlivePeriod = 0
+		}
 		transport = &http2.Transport{
 			DialTLSContext: func(ctxInner context.Context, network string, addr string, cfg *gotls.Config) (net.Conn, error) {
 				return dialContext(ctxInner)
 			},
 			IdleConnTimeout: connIdleTimeout,
-			ReadIdleTimeout: h2KeepalivePeriod,
+			ReadIdleTimeout: keepAlivePeriod,
 		}
 	} else {
 		httpDialContext := func(ctxInner context.Context, network string, addr string) (net.Conn, error) {
@@ -201,7 +231,7 @@ func createHTTPClient(dest net.Destination, streamSettings *internet.MemoryStrea
 			DialTLSContext:  httpDialContext,
 			DialContext:     httpDialContext,
 			IdleConnTimeout: connIdleTimeout,
-			// chunked transfer download with keepalives is buggy with
+			// chunked transfer download with KeepAlives is buggy with
 			// http.Client and our custom dial context.
 			DisableKeepAlives: true,
 		}
@@ -212,8 +242,7 @@ func createHTTPClient(dest net.Destination, streamSettings *internet.MemoryStrea
 		client: &http.Client{
 			Transport: transport,
 		},
-		isH2:           isH2,
+		httpVersion:    httpVersion,
-		isH3:           isH3,
 		uploadRawPool:  &sync.Pool{},
 		dialUploadConn: dialContext,
 	}
@@ -226,17 +255,16 @@ func init() {
 }
 
 func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (stat.Connection, error) {
-	errors.LogInfo(ctx, "dialing splithttp to ", dest)
-
-	var requestURL url.URL
-
-	transportConfiguration := streamSettings.ProtocolSettings.(*Config)
 	tlsConfig := tls.ConfigFromStreamSettings(streamSettings)
 	realityConfig := reality.ConfigFromStreamSettings(streamSettings)
 
-	scMaxConcurrentPosts := transportConfiguration.GetNormalizedScMaxConcurrentPosts()
+	httpVersion := decideHTTPVersion(tlsConfig, realityConfig)
-	scMaxEachPostBytes := transportConfiguration.GetNormalizedScMaxEachPostBytes()
+	if httpVersion == "3" {
-	scMinPostsIntervalMs := transportConfiguration.GetNormalizedScMinPostsIntervalMs()
+		dest.Network = net.Network_UDP
+	}
+
+	transportConfiguration := streamSettings.ProtocolSettings.(*Config)
+	var requestURL url.URL
 
 	if tlsConfig != nil || realityConfig != nil {
 		requestURL.Scheme = "https"
@@ -244,87 +272,134 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
 		requestURL.Scheme = "http"
 	}
 	requestURL.Host = transportConfiguration.Host
+	if requestURL.Host == "" && tlsConfig != nil {
+		requestURL.Host = tlsConfig.ServerName
+	}
+	if requestURL.Host == "" && realityConfig != nil {
+		requestURL.Host = realityConfig.ServerName
+	}
 	if requestURL.Host == "" {
-		requestURL.Host = dest.NetAddr()
+		requestURL.Host = dest.Address.String()
 	}
 
 	sessionIdUuid := uuid.New()
 	requestURL.Path = transportConfiguration.GetNormalizedPath() + sessionIdUuid.String()
 	requestURL.RawQuery = transportConfiguration.GetNormalizedQuery()
 
-	httpClient, muxRes := getHTTPClient(ctx, dest, streamSettings)
+	httpClient, xmuxClient := getHTTPClient(ctx, dest, streamSettings)
+
+	mode := transportConfiguration.Mode
+	if mode == "" || mode == "auto" {
+		mode = "packet-up"
+		if httpVersion == "2" {
+			mode = "stream-up"
+		}
+		if realityConfig != nil && transportConfiguration.DownloadSettings == nil {
+			mode = "stream-one"
+		}
+	}
+
+	errors.LogInfo(ctx, fmt.Sprintf("XHTTP is dialing to %s, mode %s, HTTP version %s, host %s", dest, mode, httpVersion, requestURL.Host))
 
-	httpClient2 := httpClient
 	requestURL2 := requestURL
-	var muxRes2 *muxResource
+	httpClient2 := httpClient
+	xmuxClient2 := xmuxClient
 	if transportConfiguration.DownloadSettings != nil {
 		globalDialerAccess.Lock()
 		if streamSettings.DownloadSettings == nil {
 			streamSettings.DownloadSettings = common.Must2(internet.ToMemoryStreamConfig(transportConfiguration.DownloadSettings)).(*internet.MemoryStreamConfig)
+			if streamSettings.SocketSettings != nil && streamSettings.SocketSettings.Penetrate {
+				streamSettings.DownloadSettings.SocketSettings = streamSettings.SocketSettings
+			}
 		}
 		globalDialerAccess.Unlock()
 		memory2 := streamSettings.DownloadSettings
-		httpClient2, muxRes2 = getHTTPClient(ctx, *memory2.Destination, memory2) // just panic
+		dest2 := *memory2.Destination // just panic
-		if tls.ConfigFromStreamSettings(memory2) != nil || reality.ConfigFromStreamSettings(memory2) != nil {
+		tlsConfig2 := tls.ConfigFromStreamSettings(memory2)
+		realityConfig2 := reality.ConfigFromStreamSettings(memory2)
+		httpVersion2 := decideHTTPVersion(tlsConfig2, realityConfig2)
+		if httpVersion2 == "3" {
+			dest2.Network = net.Network_UDP
+		}
+		if tlsConfig2 != nil || realityConfig2 != nil {
 			requestURL2.Scheme = "https"
 		} else {
 			requestURL2.Scheme = "http"
 		}
 		config2 := memory2.ProtocolSettings.(*Config)
 		requestURL2.Host = config2.Host
+		if requestURL2.Host == "" && tlsConfig2 != nil {
+			requestURL2.Host = tlsConfig2.ServerName
+		}
+		if requestURL2.Host == "" && realityConfig2 != nil {
+			requestURL2.Host = realityConfig2.ServerName
+		}
 		if requestURL2.Host == "" {
-			requestURL2.Host = memory2.Destination.NetAddr()
+			requestURL2.Host = dest2.Address.String()
 		}
 		requestURL2.Path = config2.GetNormalizedPath() + sessionIdUuid.String()
 		requestURL2.RawQuery = config2.GetNormalizedQuery()
+		httpClient2, xmuxClient2 = getHTTPClient(ctx, dest2, memory2)
+		errors.LogInfo(ctx, fmt.Sprintf("XHTTP is downloading from %s, mode %s, HTTP version %s, host %s", dest2, "stream-down", httpVersion2, requestURL2.Host))
 	}
 
-	reader, remoteAddr, localAddr, err := httpClient2.OpenDownload(context.WithoutCancel(ctx), requestURL2.String())
+	if xmuxClient != nil {
-	if err != nil {
+		xmuxClient.OpenUsage.Add(1)
-		return nil, err
 	}
+	if xmuxClient2 != nil && xmuxClient2 != xmuxClient {
+		xmuxClient2.OpenUsage.Add(1)
+	}
+	var closed atomic.Int32
 
-	if muxRes != nil {
+	reader, writer := io.Pipe()
-		muxRes.OpenRequests.Add(1)
-	}
-	if muxRes2 != nil {
-		muxRes2.OpenRequests.Add(1)
-	}
-	closed := false
-
 	conn := splitConn{
-		writer:     nil,
+		writer: writer,
-		reader:     reader,
-		remoteAddr: remoteAddr,
-		localAddr:  localAddr,
 		onClose: func() {
-			if closed {
+			if closed.Add(1) > 1 {
 				return
 			}
-			closed = true
+			if xmuxClient != nil {
-			if muxRes != nil {
+				xmuxClient.OpenUsage.Add(-1)
-				muxRes.OpenRequests.Add(-1)
 			}
-			if muxRes2 != nil {
+			if xmuxClient2 != nil && xmuxClient2 != xmuxClient {
-				muxRes2.OpenRequests.Add(-1)
+				xmuxClient2.OpenUsage.Add(-1)
 			}
 		},
 	}
 
-	mode := transportConfiguration.Mode
+	if mode == "stream-one" {
-	if mode == "auto" {
+		requestURL.Path = transportConfiguration.GetNormalizedPath()
-		mode = "packet-up"
+		if xmuxClient != nil {
-		if (tlsConfig != nil && len(tlsConfig.NextProtocol) != 1) || realityConfig != nil {
+			xmuxClient.LeftRequests.Add(-1)
-			mode = "stream-up"
+		}
+		conn.reader, conn.remoteAddr, conn.localAddr, _ = httpClient.OpenStream(context.WithoutCancel(ctx), requestURL.String(), reader, false)
+		return stat.Connection(&conn), nil
+	} else { // stream-down
+		var err error
+		if xmuxClient2 != nil {
+			xmuxClient2.LeftRequests.Add(-1)
+		}
+		conn.reader, conn.remoteAddr, conn.localAddr, err = httpClient2.OpenStream(context.WithoutCancel(ctx), requestURL2.String(), nil, false)
+		if err != nil { // browser dialer only
+			return nil, err
 		}
 	}
-	errors.LogInfo(ctx, "XHTTP is using mode: "+mode)
 	if mode == "stream-up" {
-		conn.writer = httpClient.OpenUpload(ctx, requestURL.String())
+		if xmuxClient != nil {
+			xmuxClient.LeftRequests.Add(-1)
+		}
+		httpClient.OpenStream(ctx, requestURL.String(), reader, true)
 		return stat.Connection(&conn), nil
 	}
 
-	maxUploadSize := scMaxEachPostBytes.roll()
+	scMaxEachPostBytes := transportConfiguration.GetNormalizedScMaxEachPostBytes()
+	scMinPostsIntervalMs := transportConfiguration.GetNormalizedScMinPostsIntervalMs()
+
+	if scMaxEachPostBytes.From <= buf.Size {
+		panic("`scMaxEachPostBytes` should be bigger than " + strconv.Itoa(buf.Size))
+	}
+
+	maxUploadSize := scMaxEachPostBytes.rand()
 	// WithSizeLimit(0) will still allow single bytes to pass, and a lot of
 	// code relies on this behavior. Subtract 1 so that together with
 	// uploadWriter wrapper, exact size limits can be enforced
@@ -337,54 +412,62 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
 	}
 
 	go func() {
-		requestsLimiter := semaphore.New(int(scMaxConcurrentPosts.roll()))
+		var seq int64
-		var requestCounter int64
+		var lastWrite time.Time
 
-		lastWrite := time.Now()
-
-		// by offloading the uploads into a buffered pipe, multiple conn.Write
-		// calls get automatically batched together into larger POST requests.
-		// without batching, bandwidth is extremely limited.
 		for {
+			wroteRequest := done.New()
+
+			ctx := httptrace.WithClientTrace(ctx, &httptrace.ClientTrace{
+				WroteRequest: func(httptrace.WroteRequestInfo) {
+					wroteRequest.Close()
+				},
+			})
+
+			// this intentionally makes a shallow-copy of the struct so we
+			// can reassign Path (potentially concurrently)
+			url := requestURL
+			url.Path += "/" + strconv.FormatInt(seq, 10)
+			// reassign query to get different padding
+			url.RawQuery = transportConfiguration.GetNormalizedQuery()
+
+			seq += 1
+
+			if scMinPostsIntervalMs.From > 0 {
+				time.Sleep(time.Duration(scMinPostsIntervalMs.rand())*time.Millisecond - time.Since(lastWrite))
+			}
+
+			// by offloading the uploads into a buffered pipe, multiple conn.Write
+			// calls get automatically batched together into larger POST requests.
+			// without batching, bandwidth is extremely limited.
 			chunk, err := uploadPipeReader.ReadMultiBuffer()
 			if err != nil {
 				break
 			}
 
-			<-requestsLimiter.Wait()
+			lastWrite = time.Now()
 
-			seq := requestCounter
+			if xmuxClient != nil && (xmuxClient.LeftRequests.Add(-1) <= 0 ||
-			requestCounter += 1
+				(xmuxClient.UnreusableAt != time.Time{} && lastWrite.After(xmuxClient.UnreusableAt))) {
+				httpClient, xmuxClient = getHTTPClient(ctx, dest, streamSettings)
+			}
 
 			go func() {
-				defer requestsLimiter.Signal()
+				err := httpClient.PostPacket(
-
-				// this intentionally makes a shallow-copy of the struct so we
-				// can reassign Path (potentially concurrently)
-				url := requestURL
-				url.Path += "/" + strconv.FormatInt(seq, 10)
-				// reassign query to get different padding
-				url.RawQuery = transportConfiguration.GetNormalizedQuery()
-
-				err := httpClient.SendUploadRequest(
 					context.WithoutCancel(ctx),
 					url.String(),
 					&buf.MultiBufferContainer{MultiBuffer: chunk},
 					int64(chunk.Len()),
 				)
+				wroteRequest.Close()
 				if err != nil {
 					errors.LogInfoInner(ctx, err, "failed to send upload")
 					uploadPipeReader.Interrupt()
 				}
 			}()
 
-			if scMinPostsIntervalMs.From > 0 {
+			if _, ok := httpClient.(*DefaultDialerClient); ok {
-				roll := time.Duration(scMinPostsIntervalMs.roll()) * time.Millisecond
+				<-wroteRequest.Wait()
-				if time.Since(lastWrite) < roll {
-					time.Sleep(roll)
-				}
-
-				lastWrite = time.Now()
 			}
 		}
 	}()

transport/internet/splithttp/hub.go

@@ -11,8 +11,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/quic-go/quic-go"
+	"github.com/xtls/quic-go"
-	"github.com/quic-go/quic-go/http3"
+	"github.com/xtls/quic-go/http3"
 	goreality "github.com/xtls/reality"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
@@ -78,7 +78,7 @@ func (h *requestHandler) upsertSession(sessionId string) *httpSession {
 	}
 
 	s := &httpSession{
-		uploadQueue:      NewUploadQueue(int(h.ln.config.GetNormalizedScMaxConcurrentPosts().To)),
+		uploadQueue:      NewUploadQueue(h.ln.config.GetNormalizedScMaxBufferedPosts()),
 		isFullyConnected: done.New(),
 	}
 
@@ -102,14 +102,22 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 
 	h.config.WriteResponseHeader(writer)
 
+	validRange := h.config.GetNormalizedXPaddingBytes()
+	x_padding := int32(len(request.URL.Query().Get("x_padding")))
+	if validRange.To > 0 && (x_padding < validRange.From || x_padding > validRange.To) {
+		errors.LogInfo(context.Background(), "invalid x_padding length:", x_padding)
+		writer.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
 	sessionId := ""
 	subpath := strings.Split(request.URL.Path[len(h.path):], "/")
 	if len(subpath) > 0 {
 		sessionId = subpath[0]
 	}
 
-	if sessionId == "" {
+	if sessionId == "" && h.config.Mode != "" && h.config.Mode != "auto" && h.config.Mode != "stream-one" && h.config.Mode != "stream-up" {
-		errors.LogInfo(context.Background(), "no sessionid on request:", request.URL.Path)
+		errors.LogInfo(context.Background(), "stream-one mode is not allowed")
 		writer.WriteHeader(http.StatusBadRequest)
 		return
 	}
@@ -126,17 +134,20 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 		}
 	}
 
-	currentSession := h.upsertSession(sessionId)
+	var currentSession *httpSession
+	if sessionId != "" {
+		currentSession = h.upsertSession(sessionId)
+	}
 	scMaxEachPostBytes := int(h.ln.config.GetNormalizedScMaxEachPostBytes().To)
 
-	if request.Method == "POST" {
+	if request.Method == "POST" && sessionId != "" {
 		seq := ""
 		if len(subpath) > 1 {
 			seq = subpath[1]
 		}
 
 		if seq == "" {
-			if h.config.Mode == "packet-up" {
+			if h.config.Mode != "" && h.config.Mode != "auto" && h.config.Mode != "stream-up" {
 				errors.LogInfo(context.Background(), "stream-up mode is not allowed")
 				writer.WriteHeader(http.StatusBadRequest)
 				return
@@ -154,7 +165,7 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 			return
 		}
 
-		if h.config.Mode == "stream-up" {
+		if h.config.Mode != "" && h.config.Mode != "auto" && h.config.Mode != "packet-up" {
 			errors.LogInfo(context.Background(), "packet-up mode is not allowed")
 			writer.WriteHeader(http.StatusBadRequest)
 			return
@@ -193,16 +204,18 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 		}
 
 		writer.WriteHeader(http.StatusOK)
-	} else if request.Method == "GET" {
+	} else if request.Method == "GET" || sessionId == "" {
 		responseFlusher, ok := writer.(http.Flusher)
 		if !ok {
 			panic("expected http.ResponseWriter to be an http.Flusher")
 		}
 
-		// after GET is done, the connection is finished. disable automatic
+		if sessionId != "" {
-		// session reaping, and handle it in defer
+			// after GET is done, the connection is finished. disable automatic
-		currentSession.isFullyConnected.Close()
+			// session reaping, and handle it in defer
-		defer h.sessions.Delete(sessionId)
+			currentSession.isFullyConnected.Close()
+			defer h.sessions.Delete(sessionId)
+		}
 
 		// magic header instructs nginx + apache to not buffer response body
 		writer.Header().Set("X-Accel-Buffering", "no")
@@ -210,6 +223,7 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 		// Should be able to prevent overloading the cache, or stop CDNs from
 		// teeing the response stream into their cache, causing slowdowns.
 		writer.Header().Set("Cache-Control", "no-store")
+
 		if !h.config.NoSSEHeader {
 			// magic header to make the HTTP middle box consider this as SSE to disable buffer
 			writer.Header().Set("Content-Type", "text/event-stream")
@@ -227,9 +241,12 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 				downloadDone:    downloadDone,
 				responseFlusher: responseFlusher,
 			},
-			reader:     currentSession.uploadQueue,
+			reader:     request.Body,
 			remoteAddr: remoteAddr,
 		}
+		if sessionId != "" {
+			conn.reader = currentSession.uploadQueue
+		}
 
 		h.ln.addConn(stat.Connection(&conn))
 
@@ -316,30 +333,30 @@ func ListenSH(ctx context.Context, address net.Address, port net.Port, streamSet
 			Net:  "unix",
 		}, streamSettings.SocketSettings)
 		if err != nil {
-			return nil, errors.New("failed to listen unix domain socket(for SH) on ", address).Base(err)
+			return nil, errors.New("failed to listen UNIX domain socket for XHTTP on ", address).Base(err)
 		}
-		errors.LogInfo(ctx, "listening unix domain socket(for SH) on ", address)
+		errors.LogInfo(ctx, "listening UNIX domain socket for XHTTP on ", address)
 	} else if l.isH3 { // quic
 		Conn, err := internet.ListenSystemPacket(context.Background(), &net.UDPAddr{
 			IP:   address.IP(),
 			Port: int(port),
 		}, streamSettings.SocketSettings)
 		if err != nil {
-			return nil, errors.New("failed to listen UDP(for SH3) on ", address, ":", port).Base(err)
+			return nil, errors.New("failed to listen UDP for XHTTP/3 on ", address, ":", port).Base(err)
 		}
 		h3listener, err := quic.ListenEarly(Conn, tlsConfig, nil)
 		if err != nil {
-			return nil, errors.New("failed to listen QUIC(for SH3) on ", address, ":", port).Base(err)
+			return nil, errors.New("failed to listen QUIC for XHTTP/3 on ", address, ":", port).Base(err)
 		}
 		l.h3listener = h3listener
-		errors.LogInfo(ctx, "listening QUIC(for SH3) on ", address, ":", port)
+		errors.LogInfo(ctx, "listening QUIC for XHTTP/3 on ", address, ":", port)
 
 		l.h3server = &http3.Server{
 			Handler: handler,
 		}
 		go func() {
 			if err := l.h3server.ServeListener(l.h3listener); err != nil {
-				errors.LogWarningInner(ctx, err, "failed to serve http3 for splithttp")
+				errors.LogWarningInner(ctx, err, "failed to serve HTTP/3 for XHTTP/3")
 			}
 		}()
 	} else { // tcp
@@ -352,9 +369,9 @@ func ListenSH(ctx context.Context, address net.Address, port net.Port, streamSet
 			Port: int(port),
 		}, streamSettings.SocketSettings)
 		if err != nil {
-			return nil, errors.New("failed to listen TCP(for SH) on ", address, ":", port).Base(err)
+			return nil, errors.New("failed to listen TCP for XHTTP on ", address, ":", port).Base(err)
 		}
-		errors.LogInfo(ctx, "listening TCP(for SH) on ", address, ":", port)
+		errors.LogInfo(ctx, "listening TCP for XHTTP on ", address, ":", port)
 	}
 
 	// tcp/unix (h1/h2)
@@ -380,7 +397,7 @@ func ListenSH(ctx context.Context, address net.Address, port net.Port, streamSet
 
 		go func() {
 			if err := l.server.Serve(l.listener); err != nil {
-				errors.LogWarningInner(ctx, err, "failed to serve http for splithttp")
+				errors.LogWarningInner(ctx, err, "failed to serve HTTP for XHTTP")
 			}
 		}()
 	}

transport/internet/splithttp/lazy_reader.go

@@ -1,47 +0,0 @@
-package splithttp
-
-import (
-	"io"
-	"sync"
-)
-
-// Close is intentionally not supported by LazyReader because it's not clear
-// how CreateReader should be aborted in case of Close. It's best to wrap
-// LazyReader in another struct that handles Close correctly, or better, stop
-// using LazyReader entirely.
-type LazyReader struct {
-	readerSync   sync.Mutex
-	CreateReader func() (io.Reader, error)
-	reader       io.Reader
-	readerError  error
-}
-
-func (r *LazyReader) getReader() (io.Reader, error) {
-	r.readerSync.Lock()
-	defer r.readerSync.Unlock()
-	if r.reader != nil {
-		return r.reader, nil
-	}
-
-	if r.readerError != nil {
-		return nil, r.readerError
-	}
-
-	reader, err := r.CreateReader()
-	if err != nil {
-		r.readerError = err
-		return nil, err
-	}
-
-	r.reader = reader
-	return reader, nil
-}
-
-func (r *LazyReader) Read(b []byte) (int, error) {
-	reader, err := r.getReader()
-	if err != nil {
-		return 0, err
-	}
-	n, err := reader.Read(b)
-	return n, err
-}

transport/internet/splithttp/mux.go

@@ -2,101 +2,112 @@ package splithttp
 
 import (
 	"context"
-	"math/rand"
+	"crypto/rand"
+	"math"
+	"math/big"
 	"sync/atomic"
 	"time"
 
 	"github.com/xtls/xray-core/common/errors"
 )
 
-type muxResource struct {
+type XmuxConn interface {
-	Resource       interface{}
+	IsClosed() bool
-	OpenRequests   atomic.Int32
-	leftUsage      int32
-	expirationTime time.Time
 }
 
-type muxManager struct {
+type XmuxClient struct {
-	newResourceFn func() interface{}
+	XmuxConn     XmuxConn
-	config        Multiplexing
+	OpenUsage    atomic.Int32
-	concurrency   int32
+	leftUsage    int32
-	connections   int32
+	LeftRequests atomic.Int32
-	instances     []*muxResource
+	UnreusableAt time.Time
 }
 
-func NewMuxManager(config Multiplexing, newResource func() interface{}) *muxManager {
+type XmuxManager struct {
-	return &muxManager{
+	xmuxConfig  XmuxConfig
-		config:        config,
+	concurrency int32
-		concurrency:   config.GetNormalizedMaxConcurrency().roll(),
+	connections int32
-		connections:   config.GetNormalizedMaxConnections().roll(),
+	newConnFunc func() XmuxConn
-		newResourceFn: newResource,
+	xmuxClients []*XmuxClient
-		instances:     make([]*muxResource, 0),
+}
+
+func NewXmuxManager(xmuxConfig XmuxConfig, newConnFunc func() XmuxConn) *XmuxManager {
+	return &XmuxManager{
+		xmuxConfig:  xmuxConfig,
+		concurrency: xmuxConfig.GetNormalizedMaxConcurrency().rand(),
+		connections: xmuxConfig.GetNormalizedMaxConnections().rand(),
+		newConnFunc: newConnFunc,
+		xmuxClients: make([]*XmuxClient, 0),
 	}
 }
 
-func (m *muxManager) GetResource(ctx context.Context) *muxResource {
+func (m *XmuxManager) newXmuxClient() *XmuxClient {
-	m.removeExpiredConnections(ctx)
+	xmuxClient := &XmuxClient{
+		XmuxConn:  m.newConnFunc(),
+		leftUsage: -1,
+	}
+	if x := m.xmuxConfig.GetNormalizedCMaxReuseTimes().rand(); x > 0 {
+		xmuxClient.leftUsage = x - 1
+	}
+	xmuxClient.LeftRequests.Store(math.MaxInt32)
+	if x := m.xmuxConfig.GetNormalizedHMaxRequestTimes().rand(); x > 0 {
+		xmuxClient.LeftRequests.Store(x)
+	}
+	if x := m.xmuxConfig.GetNormalizedHMaxReusableSecs().rand(); x > 0 {
+		xmuxClient.UnreusableAt = time.Now().Add(time.Duration(x) * time.Second)
+	}
+	m.xmuxClients = append(m.xmuxClients, xmuxClient)
+	return xmuxClient
+}
 
-	if m.connections > 0 && len(m.instances) < int(m.connections) {
+func (m *XmuxManager) GetXmuxClient(ctx context.Context) *XmuxClient { // when locking
-		errors.LogDebug(ctx, "xmux: creating client, connections=", len(m.instances))
+	for i := 0; i < len(m.xmuxClients); {
-		return m.newResource()
+		xmuxClient := m.xmuxClients[i]
+		if xmuxClient.XmuxConn.IsClosed() ||
+			xmuxClient.leftUsage == 0 ||
+			xmuxClient.LeftRequests.Load() <= 0 ||
+			(xmuxClient.UnreusableAt != time.Time{} && time.Now().After(xmuxClient.UnreusableAt)) {
+			errors.LogDebug(ctx, "XMUX: removing xmuxClient, IsClosed() = ", xmuxClient.XmuxConn.IsClosed(),
+				", OpenUsage = ", xmuxClient.OpenUsage.Load(),
+				", leftUsage = ", xmuxClient.leftUsage,
+				", LeftRequests = ", xmuxClient.LeftRequests.Load(),
+				", UnreusableAt = ", xmuxClient.UnreusableAt)
+			m.xmuxClients = append(m.xmuxClients[:i], m.xmuxClients[i+1:]...)
+		} else {
+			i++
+		}
 	}
 
-	if len(m.instances) == 0 {
+	if len(m.xmuxClients) == 0 {
-		errors.LogDebug(ctx, "xmux: creating client because instances is empty, connections=", len(m.instances))
+		errors.LogDebug(ctx, "XMUX: creating xmuxClient because xmuxClients is empty")
-		return m.newResource()
+		return m.newXmuxClient()
 	}
 
-	clients := make([]*muxResource, 0)
+	if m.connections > 0 && len(m.xmuxClients) < int(m.connections) {
+		errors.LogDebug(ctx, "XMUX: creating xmuxClient because maxConnections was not hit, xmuxClients = ", len(m.xmuxClients))
+		return m.newXmuxClient()
+	}
+
+	xmuxClients := make([]*XmuxClient, 0)
 	if m.concurrency > 0 {
-		for _, client := range m.instances {
+		for _, xmuxClient := range m.xmuxClients {
-			openRequests := client.OpenRequests.Load()
+			if xmuxClient.OpenUsage.Load() < m.concurrency {
-			if openRequests < m.concurrency {
+				xmuxClients = append(xmuxClients, xmuxClient)
-				clients = append(clients, client)
 			}
 		}
 	} else {
-		clients = m.instances
+		xmuxClients = m.xmuxClients
 	}
 
-	if len(clients) == 0 {
+	if len(xmuxClients) == 0 {
-		errors.LogDebug(ctx, "xmux: creating client because concurrency was hit, total clients=", len(m.instances))
+		errors.LogDebug(ctx, "XMUX: creating xmuxClient because maxConcurrency was hit, xmuxClients = ", len(m.xmuxClients))
-		return m.newResource()
+		return m.newXmuxClient()
 	}
 
-	client := clients[rand.Intn(len(clients))]
+	i, _ := rand.Int(rand.Reader, big.NewInt(int64(len(xmuxClients))))
-	if client.leftUsage > 0 {
+	xmuxClient := xmuxClients[i.Int64()]
-		client.leftUsage -= 1
+	if xmuxClient.leftUsage > 0 {
-	}
+		xmuxClient.leftUsage -= 1
-	return client
-}
-
-func (m *muxManager) newResource() *muxResource {
-	leftUsage := int32(-1)
-	if x := m.config.GetNormalizedCMaxReuseTimes().roll(); x > 0 {
-		leftUsage = x - 1
-	}
-	expirationTime := time.UnixMilli(0)
-	if x := m.config.GetNormalizedCMaxLifetimeMs().roll(); x > 0 {
-		expirationTime = time.Now().Add(time.Duration(x) * time.Millisecond)
-	}
-
-	client := &muxResource{
-		Resource:       m.newResourceFn(),
-		leftUsage:      leftUsage,
-		expirationTime: expirationTime,
-	}
-	m.instances = append(m.instances, client)
-	return client
-}
-
-func (m *muxManager) removeExpiredConnections(ctx context.Context) {
-	for i := 0; i < len(m.instances); i++ {
-		client := m.instances[i]
-		if client.leftUsage == 0 || (client.expirationTime != time.UnixMilli(0) && time.Now().After(client.expirationTime)) {
-			errors.LogDebug(ctx, "xmux: removing client, leftUsage = ", client.leftUsage, ", expirationTime = ", client.expirationTime)
-			m.instances = append(m.instances[:i], m.instances[i+1:]...)
-			i--
-		}
 	}
+	return xmuxClient
 }

transport/internet/splithttp/mux_test.go

@@ -9,80 +9,84 @@ import (
 
 type fakeRoundTripper struct{}
 
+func (f *fakeRoundTripper) IsClosed() bool {
+	return false
+}
+
 func TestMaxConnections(t *testing.T) {
-	config := Multiplexing{
+	xmuxConfig := XmuxConfig{
-		MaxConnections: &RandRangeConfig{From: 4, To: 4},
+		MaxConnections: &RangeConfig{From: 4, To: 4},
 	}
 
-	mux := NewMuxManager(config, func() interface{} {
+	xmuxManager := NewXmuxManager(xmuxConfig, func() XmuxConn {
 		return &fakeRoundTripper{}
 	})
 
-	clients := make(map[interface{}]struct{})
+	xmuxClients := make(map[interface{}]struct{})
 	for i := 0; i < 8; i++ {
-		clients[mux.GetResource(context.Background())] = struct{}{}
+		xmuxClients[xmuxManager.GetXmuxClient(context.Background())] = struct{}{}
 	}
 
-	if len(clients) != 4 {
+	if len(xmuxClients) != 4 {
-		t.Error("did not get 4 distinct clients, got ", len(clients))
+		t.Error("did not get 4 distinct clients, got ", len(xmuxClients))
 	}
 }
 
 func TestCMaxReuseTimes(t *testing.T) {
-	config := Multiplexing{
+	xmuxConfig := XmuxConfig{
-		CMaxReuseTimes: &RandRangeConfig{From: 2, To: 2},
+		CMaxReuseTimes: &RangeConfig{From: 2, To: 2},
 	}
 
-	mux := NewMuxManager(config, func() interface{} {
+	xmuxManager := NewXmuxManager(xmuxConfig, func() XmuxConn {
 		return &fakeRoundTripper{}
 	})
 
-	clients := make(map[interface{}]struct{})
+	xmuxClients := make(map[interface{}]struct{})
 	for i := 0; i < 64; i++ {
-		clients[mux.GetResource(context.Background())] = struct{}{}
+		xmuxClients[xmuxManager.GetXmuxClient(context.Background())] = struct{}{}
 	}
 
-	if len(clients) != 32 {
+	if len(xmuxClients) != 32 {
-		t.Error("did not get 32 distinct clients, got ", len(clients))
+		t.Error("did not get 32 distinct clients, got ", len(xmuxClients))
 	}
 }
 
 func TestMaxConcurrency(t *testing.T) {
-	config := Multiplexing{
+	xmuxConfig := XmuxConfig{
-		MaxConcurrency: &RandRangeConfig{From: 2, To: 2},
+		MaxConcurrency: &RangeConfig{From: 2, To: 2},
 	}
 
-	mux := NewMuxManager(config, func() interface{} {
+	xmuxManager := NewXmuxManager(xmuxConfig, func() XmuxConn {
 		return &fakeRoundTripper{}
 	})
 
-	clients := make(map[interface{}]struct{})
+	xmuxClients := make(map[interface{}]struct{})
 	for i := 0; i < 64; i++ {
-		client := mux.GetResource(context.Background())
+		xmuxClient := xmuxManager.GetXmuxClient(context.Background())
-		client.OpenRequests.Add(1)
+		xmuxClient.OpenUsage.Add(1)
-		clients[client] = struct{}{}
+		xmuxClients[xmuxClient] = struct{}{}
 	}
 
-	if len(clients) != 32 {
+	if len(xmuxClients) != 32 {
-		t.Error("did not get 32 distinct clients, got ", len(clients))
+		t.Error("did not get 32 distinct clients, got ", len(xmuxClients))
 	}
 }
 
 func TestDefault(t *testing.T) {
-	config := Multiplexing{}
+	xmuxConfig := XmuxConfig{}
 
-	mux := NewMuxManager(config, func() interface{} {
+	xmuxManager := NewXmuxManager(xmuxConfig, func() XmuxConn {
 		return &fakeRoundTripper{}
 	})
 
-	clients := make(map[interface{}]struct{})
+	xmuxClients := make(map[interface{}]struct{})
 	for i := 0; i < 64; i++ {
-		client := mux.GetResource(context.Background())
+		xmuxClient := xmuxManager.GetXmuxClient(context.Background())
-		client.OpenRequests.Add(1)
+		xmuxClient.OpenUsage.Add(1)
-		clients[client] = struct{}{}
+		xmuxClients[xmuxClient] = struct{}{}
 	}
 
-	if len(clients) != 1 {
+	if len(xmuxClients) != 1 {
-		t.Error("did not get 1 distinct clients, got ", len(clients))
+		t.Error("did not get 1 distinct clients, got ", len(xmuxClients))
 	}
 }

transport/internet/splithttp/splithttp_test.go

@@ -109,7 +109,7 @@ func TestDialWithRemoteAddr(t *testing.T) {
 
 	conn, err := Dial(context.Background(), net.TCPDestination(net.DomainAddress("localhost"), listenPort), &internet.MemoryStreamConfig{
 		ProtocolName:     "splithttp",
-		ProtocolSettings: &Config{Path: "sh", Header: map[string]string{"X-Forwarded-For": "1.1.1.1"}},
+		ProtocolSettings: &Config{Path: "sh", Headers: map[string]string{"X-Forwarded-For": "1.1.1.1"}},
 	})
 
 	common.Must(err)
@@ -423,7 +423,7 @@ func Test_maxUpload(t *testing.T) {
 		ProtocolName: "splithttp",
 		ProtocolSettings: &Config{
 			Path: "/sh",
-			ScMaxEachPostBytes: &RandRangeConfig{
+			ScMaxEachPostBytes: &RangeConfig{
 				From: 10000,
 				To:   10000,
 			},

transport/internet/splithttp/upload_queue.go

@@ -52,7 +52,7 @@ func (h *uploadQueue) Push(p Packet) error {
 		if p.Reader != nil {
 			p.Reader.Close()
 		}
-		return errors.New("splithttp packet queue closed")
+		return errors.New("packet queue closed")
 	}
 
 	h.pushedPackets <- p

transport/internet/tagged/tagged.go

@@ -4,8 +4,9 @@ import (
 	"context"
 
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/features/routing"
 )
 
-type DialFunc func(ctx context.Context, dest net.Destination, tag string) (net.Conn, error)
+type DialFunc func(ctx context.Context, dispatcher routing.Dispatcher, dest net.Destination, tag string) (net.Conn, error)
 
 var Dialer DialFunc

transport/internet/tagged/taggedimpl/impl.go

@@ -12,17 +12,10 @@ import (
 	"github.com/xtls/xray-core/transport/internet/tagged"
 )
 
-func DialTaggedOutbound(ctx context.Context, dest net.Destination, tag string) (net.Conn, error) {
+func DialTaggedOutbound(ctx context.Context, dispatcher routing.Dispatcher, dest net.Destination, tag string) (net.Conn, error) {
-	var dispatcher routing.Dispatcher
 	if core.FromContext(ctx) == nil {
 		return nil, errors.New("Instance context variable is not in context, dial denied. ")
 	}
-	if err := core.RequireFeatures(ctx, func(dispatcherInstance routing.Dispatcher) {
-		dispatcher = dispatcherInstance
-	}); err != nil {
-		return nil, errors.New("Required Feature dispatcher not resolved").Base(err)
-	}
-
 	content := new(session.Content)
 	content.SkipDNSResolve = true
 

transport/internet/tls/tls.go

@@ -165,7 +165,7 @@ func init() {
 
 func GetFingerprint(name string) (fingerprint *utls.ClientHelloID) {
 	if name == "" {
-		return
+		return &utls.HelloChrome_Auto
 	}
 	if fingerprint = PresetFingerprints[name]; fingerprint != nil {
 		return
@@ -191,6 +191,7 @@ var PresetFingerprints = map[string]*utls.ClientHelloID{
 	"qq":         &utls.HelloQQ_Auto,
 	"random":     nil,
 	"randomized": nil,
+	"unsafe":     nil,
 }
 
 var ModernFingerprints = map[string]*utls.ClientHelloID{

transport/internet/websocket/config.go

@@ -23,7 +23,6 @@ func (c *Config) GetRequestHeader() http.Header {
 	for k, v := range c.Header {
 		header.Add(k, v)
 	}
-	header.Set("Host", c.Host)
 	return header
 }
 

transport/internet/websocket/config.pb.go

@@ -30,6 +30,7 @@ type Config struct {
 	Header              map[string]string `protobuf:"bytes,3,rep,name=header,proto3" json:"header,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	AcceptProxyProtocol bool              `protobuf:"varint,4,opt,name=accept_proxy_protocol,json=acceptProxyProtocol,proto3" json:"accept_proxy_protocol,omitempty"`
 	Ed                  uint32            `protobuf:"varint,5,opt,name=ed,proto3" json:"ed,omitempty"`
+	HeartbeatPeriod     uint32            `protobuf:"varint,6,opt,name=heartbeatPeriod,proto3" json:"heartbeatPeriod,omitempty"`
 }
 
 func (x *Config) Reset() {
@@ -97,6 +98,13 @@ func (x *Config) GetEd() uint32 {
 	return 0
 }
 
+func (x *Config) GetHeartbeatPeriod() uint32 {
+	if x != nil {
+		return x.HeartbeatPeriod
+	}
+	return 0
+}
+
 var File_transport_internet_websocket_config_proto protoreflect.FileDescriptor
 
 var file_transport_internet_websocket_config_proto_rawDesc = []byte{
@@ -104,8 +112,8 @@ var file_transport_internet_websocket_config_proto_rawDesc = []byte{
 	0x72, 0x6e, 0x65, 0x74, 0x2f, 0x77, 0x65, 0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x2f, 0x63,
 	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x21, 0x78, 0x72, 0x61,
 	0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65,
-	0x72, 0x6e, 0x65, 0x74, 0x2e, 0x77, 0x65, 0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x22, 0xfe,
+	0x72, 0x6e, 0x65, 0x74, 0x2e, 0x77, 0x65, 0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x22, 0xa8,
-	0x01, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x68, 0x6f, 0x73,
+	0x02, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x68, 0x6f, 0x73,
 	0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x68, 0x6f, 0x73, 0x74, 0x12, 0x12, 0x0a,
 	0x04, 0x70, 0x61, 0x74, 0x68, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x70, 0x61, 0x74,
 	0x68, 0x12, 0x4d, 0x0a, 0x06, 0x68, 0x65, 0x61, 0x64, 0x65, 0x72, 0x18, 0x03, 0x20, 0x03, 0x28,
@@ -117,19 +125,22 @@ var file_transport_internet_websocket_config_proto_rawDesc = []byte{
 	0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x18, 0x04, 0x20, 0x01, 0x28, 0x08, 0x52,
 	0x13, 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x50, 0x72, 0x6f, 0x74,
 	0x6f, 0x63, 0x6f, 0x6c, 0x12, 0x0e, 0x0a, 0x02, 0x65, 0x64, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0d,
-	0x52, 0x02, 0x65, 0x64, 0x1a, 0x39, 0x0a, 0x0b, 0x48, 0x65, 0x61, 0x64, 0x65, 0x72, 0x45, 0x6e,
+	0x52, 0x02, 0x65, 0x64, 0x12, 0x28, 0x0a, 0x0f, 0x68, 0x65, 0x61, 0x72, 0x74, 0x62, 0x65, 0x61,
-	0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
+	0x74, 0x50, 0x65, 0x72, 0x69, 0x6f, 0x64, 0x18, 0x06, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0f, 0x68,
-	0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02,
+	0x65, 0x61, 0x72, 0x74, 0x62, 0x65, 0x61, 0x74, 0x50, 0x65, 0x72, 0x69, 0x6f, 0x64, 0x1a, 0x39,
-	0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x42,
+	0x0a, 0x0b, 0x48, 0x65, 0x61, 0x64, 0x65, 0x72, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a,
-	0x85, 0x01, 0x0a, 0x25, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61,
+	0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12,
-	0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e,
+	0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05,
-	0x77, 0x65, 0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x50, 0x01, 0x5a, 0x36, 0x67, 0x69, 0x74,
+	0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x42, 0x85, 0x01, 0x0a, 0x25, 0x63, 0x6f,
-	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61,
+	0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74,
-	0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74,
+	0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x77, 0x65, 0x62, 0x73, 0x6f, 0x63,
-	0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2f, 0x77, 0x65, 0x62, 0x73, 0x6f, 0x63,
+	0x6b, 0x65, 0x74, 0x50, 0x01, 0x5a, 0x36, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
-	0x6b, 0x65, 0x74, 0xaa, 0x02, 0x21, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e, 0x73,
+	0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65,
-	0x70, 0x6f, 0x72, 0x74, 0x2e, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x57, 0x65,
+	0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72,
-	0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x6e, 0x65, 0x74, 0x2f, 0x77, 0x65, 0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0xaa, 0x02, 0x21,
+	0x58, 0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x49,
+	0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x57, 0x65, 0x62, 0x73, 0x6f, 0x63, 0x6b, 0x65,
+	0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

transport/internet/websocket/config.proto

@@ -12,4 +12,5 @@ message Config {
   map<string, string> header = 3;
   bool accept_proxy_protocol = 4;
   uint32 ed = 5;
+  uint32 heartbeatPeriod = 6;
 }

transport/internet/websocket/connection.go

@@ -22,7 +22,18 @@ type connection struct {
 	remoteAddr net.Addr
 }
 
-func NewConnection(conn *websocket.Conn, remoteAddr net.Addr, extraReader io.Reader) *connection {
+func NewConnection(conn *websocket.Conn, remoteAddr net.Addr, extraReader io.Reader, heartbeatPeriod uint32) *connection {
+	if heartbeatPeriod != 0 {
+		go func() {
+			for {
+				time.Sleep(time.Duration(heartbeatPeriod) * time.Second)
+				if err := conn.WriteControl(websocket.PingMessage, []byte{}, time.Time{}); err != nil {
+					break
+				}
+			}
+		}()
+	}
+
 	return &connection{
 		conn:       conn,
 		remoteAddr: remoteAddr,

transport/internet/websocket/dialer.go

@@ -58,11 +58,12 @@ func dialWebSocket(ctx context.Context, dest net.Destination, streamSettings *in
 
 	protocol := "ws"
 
-	if config := tls.ConfigFromStreamSettings(streamSettings); config != nil {
+	tConfig := tls.ConfigFromStreamSettings(streamSettings)
+	if tConfig != nil {
 		protocol = "wss"
-		tlsConfig := config.GetTLSConfig(tls.WithDestination(dest), tls.WithNextProto("http/1.1"))
+		tlsConfig := tConfig.GetTLSConfig(tls.WithDestination(dest), tls.WithNextProto("http/1.1"))
 		dialer.TLSClientConfig = tlsConfig
-		if fingerprint := tls.GetFingerprint(config.Fingerprint); fingerprint != nil {
+		if fingerprint := tls.GetFingerprint(tConfig.Fingerprint); fingerprint != nil {
 			dialer.NetDialTLSContext = func(_ context.Context, _, addr string) (gonet.Conn, error) {
 				// Like the NetDial in the dialer
 				pconn, err := internet.DialSystem(ctx, dest, streamSettings.SocketSettings)
@@ -99,10 +100,18 @@ func dialWebSocket(ctx context.Context, dest net.Destination, streamSettings *in
 			return nil, err
 		}
 
-		return NewConnection(conn, conn.RemoteAddr(), nil), nil
+		return NewConnection(conn, conn.RemoteAddr(), nil, wsSettings.HeartbeatPeriod), nil
 	}
 
 	header := wsSettings.GetRequestHeader()
+	// See dialer.DialContext()
+	header.Set("Host", wsSettings.Host)
+	if header.Get("Host") == "" && tConfig != nil {
+		header.Set("Host", tConfig.ServerName)
+	}
+	if header.Get("Host") == "" {
+		header.Set("Host", dest.Address.String())
+	}
 	if ed != nil {
 		// RawURLEncoding is support by both V2Ray/V2Fly and XRay.
 		header.Set("Sec-WebSocket-Protocol", base64.RawURLEncoding.EncodeToString(ed))
@@ -117,7 +126,7 @@ func dialWebSocket(ctx context.Context, dest net.Destination, streamSettings *in
 		return nil, errors.New("failed to dial to (", uri, "): ", reason).Base(err)
 	}
 
-	return NewConnection(conn, conn.RemoteAddr(), nil), nil
+	return NewConnection(conn, conn.RemoteAddr(), nil, wsSettings.HeartbeatPeriod), nil
 }
 
 type delayDialConn struct {

transport/internet/websocket/hub.go

@@ -73,7 +73,7 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
 		}
 	}
 
-	h.ln.addConn(NewConnection(conn, remoteAddr, extraReader))
+	h.ln.addConn(NewConnection(conn, remoteAddr, extraReader, h.ln.config.HeartbeatPeriod))
 }
 
 type Listener struct {