[dependencies] Update golangci/golangci-lint-action action to v8

Co-authored-by: anytls <anytls>

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -109,7 +109,7 @@ jobs:
         if: ${{ ! matrix.legacy_go }}
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Cache Legacy Go
         if: matrix.require_legacy_go
         id: cache-legacy-go
@@ -140,7 +140,7 @@ jobs:
       - name: Set build tags
         run: |
           set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_acme,with_clash_api,with_tailscale'
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale'
           echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
       - name: Build
         if: matrix.os != 'android'
@@ -294,7 +294,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -374,7 +374,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -472,7 +472,7 @@ jobs:
         if: matrix.if
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Setup Xcode stable
         if: matrix.if && github.ref == 'refs/heads/main-next'
         run: |-
@@ -549,10 +549,13 @@ jobs:
           MACOS_PROJECT_VERSION=$(go run -v ./cmd/internal/app_store_connect next_macos_project_version)
           echo "MACOS_PROJECT_VERSION=$MACOS_PROJECT_VERSION"
           echo "MACOS_PROJECT_VERSION=$MACOS_PROJECT_VERSION" >> "$GITHUB_ENV"
+      - name: Update version
+        if: matrix.if && matrix.name != 'iOS'
+        run: |-
+          go run -v ./cmd/internal/update_apple_version --ci
       - name: Build
         if: matrix.if
         run: |-
-          go run -v ./cmd/internal/update_apple_version --ci
           cd clients/apple
           xcodebuild archive \
             -scheme "${{ matrix.scheme }}" \

.github/workflows/lint.yml

@@ -28,9 +28,9 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v8
         with:
           version: latest
           args: --timeout=30m

.github/workflows/linux.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -66,7 +66,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.24.3
       - name: Setup Android NDK
         if: matrix.os == 'android'
         uses: nttld/setup-ndk@v1
@@ -80,10 +80,7 @@ jobs:
       - name: Set build tags
         run: |
           set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_acme,with_clash_api'
-          if [ ! '${{ matrix.legacy_go }}' = 'true' ]; then
-            TAGS="${TAGS},with_ech"
-          fi
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api'
           echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
       - name: Build
         run: |

.golangci.yml

@@ -27,9 +27,7 @@ run:
     - with_quic
     - with_dhcp
     - with_wireguard
-    - with_ech
     - with_utls
-    - with_reality_server
     - with_acme
     - with_clash_api
 

.goreleaser.fury.yaml

@@ -14,11 +14,10 @@ builds:
       - with_quic
       - with_dhcp
       - with_wireguard
-      - with_ech
       - with_utls
-      - with_reality_server
       - with_acme
       - with_clash_api
+      - with_tailscale
     env:
       - CGO_ENABLED=0
     targets:

.goreleaser.yaml

@@ -16,13 +16,13 @@ builds:
       - with_quic
       - with_dhcp
       - with_wireguard
-      - with_ech
       - with_utls
-      - with_reality_server
       - with_acme
       - with_clash_api
+      - with_tailscale
     env:
       - CGO_ENABLED=0
+      - GOTOOLCHAIN=local
     targets:
       - linux_386
       - linux_amd64_v1
@@ -46,9 +46,9 @@ builds:
       - with_dhcp
       - with_wireguard
       - with_utls
-      - with_reality_server
       - with_acme
       - with_clash_api
+      - with_tailscale
     env:
       - CGO_ENABLED=0
       - GOROOT={{ .Env.GOPATH }}/go_legacy
@@ -60,6 +60,7 @@ builds:
     <<: *template
     env:
       - CGO_ENABLED=1
+      - GOTOOLCHAIN=local
     overrides:
       - goos: android
         goarch: arm

Dockerfile

@@ -13,7 +13,7 @@ RUN set -ex \
     && export COMMIT=$(git rev-parse --short HEAD) \
     && export VERSION=$(go run ./cmd/internal/read_tag) \
     && go build -v -trimpath -tags \
-        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_ech,with_utls,with_reality_server,with_acme,with_clash_api" \
+        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale" \
         -o /go/bin/sing-box \
         -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid=" \
         ./cmd/sing-box

Makefile

@@ -1,9 +1,7 @@
 NAME = sing-box
 COMMIT = $(shell git rev-parse --short HEAD)
-TAGS_GO120 = with_gvisor,with_dhcp,with_wireguard,with_reality_server,with_clash_api,with_quic,with_utls
-TAGS_GO121 = with_ech
-TAGS ?= $(TAGS_GO118),$(TAGS_GO120),$(TAGS_GO121)
-TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_ech,with_utls,with_reality_server
+TAGS ?= with_gvisor,with_dhcp,with_wireguard,with_clash_api,with_quic,with_utls,with_tailscale
+TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_utls
 
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
@@ -17,14 +15,12 @@ PREFIX ?= $(shell go env GOPATH)
 .PHONY: test release docs build
 
 build:
+	export GOTOOLCHAIN=local && \
 	go build $(MAIN_PARAMS) $(MAIN)
 
-ci_build_go120:
-	go build $(PARAMS) $(MAIN)
-	go build $(PARAMS) -tags "$(TAGS_GO120)" $(MAIN)
-
 ci_build:
-	go build $(PARAMS) $(MAIN)
+	export GOTOOLCHAIN=local && \
+	go build $(PARAMS) $(MAIN) && \
 	go build $(MAIN_PARAMS) $(MAIN)
 
 generate_completions:
@@ -230,8 +226,8 @@ lib:
 	go run ./cmd/internal/build_libbox -target ios
 
 lib_install:
-	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.1.4
-	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.1.4
+	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.1.6
+	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.1.6
 
 docs:
 	venv/bin/mkdocs serve

adapter/dns.go

@@ -45,10 +45,10 @@ type RDRCStore interface {
 }
 
 type DNSTransport interface {
+	Lifecycle
 	Type() string
 	Tag() string
 	Dependencies() []string
-	Reset()
 	Exchange(ctx context.Context, message *dns.Msg) (*dns.Msg, error)
 }
 

adapter/inbound.go

@@ -74,6 +74,7 @@ type InboundContext struct {
 	UDPTimeout                time.Duration
 	TLSFragment               bool
 	TLSFragmentFallbackDelay  time.Duration
+	TLSRecordFragment         bool
 
 	NetworkStrategy     *C.NetworkStrategy
 	NetworkType         []C.InterfaceType

adapter/outbound/manager.go

@@ -246,8 +246,6 @@ func (m *Manager) Create(ctx context.Context, router adapter.Router, logger log.
 	if err != nil {
 		return err
 	}
-	m.access.Lock()
-	defer m.access.Unlock()
 	if m.started {
 		for _, stage := range adapter.ListStartStages {
 			err = adapter.LegacyStart(outbound, stage)
@@ -256,6 +254,8 @@ func (m *Manager) Create(ctx context.Context, router adapter.Router, logger log.
 			}
 		}
 	}
+	m.access.Lock()
+	defer m.access.Unlock()
 	if existsOutbound, loaded := m.outboundByTag[tag]; loaded {
 		if m.started {
 			err = common.Close(existsOutbound)

cmd/internal/build_libbox/main.go

@@ -45,6 +45,7 @@ var (
 	debugFlags  []string
 	sharedTags  []string
 	iosTags     []string
+	memcTags    []string
 	debugTags   []string
 )
 
@@ -58,8 +59,9 @@ func init() {
 	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid=")
 	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag)
 
-	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_ech", "with_utls", "with_clash_api")
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api")
 	iosTags = append(iosTags, "with_dhcp", "with_low_memory", "with_conntrack")
+	memcTags = append(memcTags, "with_tailscale")
 	debugTags = append(debugTags, "debug")
 }
 
@@ -99,18 +101,19 @@ func buildAndroid() {
 		"-javapkg=io.nekohasekai",
 		"-libname=box",
 	}
+
 	if !debugEnabled {
 		args = append(args, sharedFlags...)
 	} else {
 		args = append(args, debugFlags...)
 	}
 
-	args = append(args, "-tags")
-	if !debugEnabled {
-		args = append(args, strings.Join(sharedTags, ","))
-	} else {
-		args = append(args, strings.Join(append(sharedTags, debugTags...), ","))
+	tags := append(sharedTags, memcTags...)
+	if debugEnabled {
+		tags = append(tags, debugTags...)
 	}
+
+	args = append(args, "-tags", strings.Join(tags, ","))
 	args = append(args, "./experimental/libbox")
 
 	command := exec.Command(build_shared.GoBinPath+"/gomobile", args...)
@@ -148,7 +151,9 @@ func buildApple() {
 		"-v",
 		"-target", bindTarget,
 		"-libname=box",
+		"-tags-macos=" + strings.Join(memcTags, ","),
 	}
+
 	if !debugEnabled {
 		args = append(args, sharedFlags...)
 	} else {
@@ -156,12 +161,11 @@ func buildApple() {
 	}
 
 	tags := append(sharedTags, iosTags...)
-	args = append(args, "-tags")
-	if !debugEnabled {
-		args = append(args, strings.Join(tags, ","))
-	} else {
-		args = append(args, strings.Join(append(tags, debugTags...), ","))
+	if debugEnabled {
+		tags = append(tags, debugTags...)
 	}
+
+	args = append(args, "-tags", strings.Join(tags, ","))
 	args = append(args, "./experimental/libbox")
 
 	command := exec.Command(build_shared.GoBinPath+"/gomobile", args...)

cmd/internal/update_certificates/main.go

@@ -60,7 +60,10 @@ func init() {
 		generated.WriteString(record[nameIndex])
 		generated.WriteString("\n")
 		generated.WriteString("	mozillaIncluded.AppendCertsFromPEM([]byte(`")
-		generated.WriteString(record[certIndex])
+		cert := record[certIndex]
+		// Remove single quotes
+		cert = cert[1 : len(cert)-1]
+		generated.WriteString(cert)
 		generated.WriteString("`))\n")
 	}
 	generated.WriteString("}\n")

cmd/sing-box/cmd_generate_ech.go

@@ -9,8 +9,6 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var pqSignatureSchemesEnabled bool
-
 var commandGenerateECHKeyPair = &cobra.Command{
 	Use:   "ech-keypair <plain_server_name>",
 	Short: "Generate TLS ECH key pair",
@@ -24,12 +22,11 @@ var commandGenerateECHKeyPair = &cobra.Command{
 }
 
 func init() {
-	commandGenerateECHKeyPair.Flags().BoolVar(&pqSignatureSchemesEnabled, "pq-signature-schemes-enabled", false, "Enable PQ signature schemes")
 	commandGenerate.AddCommand(commandGenerateECHKeyPair)
 }
 
 func generateECHKeyPair(serverName string) error {
-	configPem, keyPem, err := tls.ECHKeygenDefault(serverName, pqSignatureSchemesEnabled)
+	configPem, keyPem, err := tls.ECHKeygenDefault(serverName)
 	if err != nil {
 		return err
 	}

common/badtls/read_wait_ech.go

@@ -1,31 +0,0 @@
-//go:build go1.21 && !without_badtls && with_ech
-
-package badtls
-
-import (
-	"net"
-	_ "unsafe"
-
-	"github.com/sagernet/cloudflare-tls"
-	"github.com/sagernet/sing/common"
-)
-
-func init() {
-	tlsRegistry = append(tlsRegistry, func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error) {
-		tlsConn, loaded := common.Cast[*tls.Conn](conn)
-		if !loaded {
-			return
-		}
-		return true, func() error {
-				return echReadRecord(tlsConn)
-			}, func() error {
-				return echHandlePostHandshakeMessage(tlsConn)
-			}
-	})
-}
-
-//go:linkname echReadRecord github.com/sagernet/cloudflare-tls.(*Conn).readRecord
-func echReadRecord(c *tls.Conn) error
-
-//go:linkname echHandlePostHandshakeMessage github.com/sagernet/cloudflare-tls.(*Conn).handlePostHandshakeMessage
-func echHandlePostHandshakeMessage(c *tls.Conn) error

common/badtls/read_wait_utls.go

@@ -7,7 +7,8 @@ import (
 	_ "unsafe"
 
 	"github.com/sagernet/sing/common"
-	"github.com/sagernet/utls"
+
+	"github.com/metacubex/utls"
 )
 
 func init() {
@@ -24,8 +25,8 @@ func init() {
 	})
 }
 
-//go:linkname utlsReadRecord github.com/sagernet/utls.(*Conn).readRecord
+//go:linkname utlsReadRecord github.com/metacubex/utls.(*Conn).readRecord
 func utlsReadRecord(c *tls.Conn) error
 
-//go:linkname utlsHandlePostHandshakeMessage github.com/sagernet/utls.(*Conn).handlePostHandshakeMessage
+//go:linkname utlsHandlePostHandshakeMessage github.com/metacubex/utls.(*Conn).handlePostHandshakeMessage
 func utlsHandlePostHandshakeMessage(c *tls.Conn) error

common/dialer/default.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/conntrack"
+	"github.com/sagernet/sing-box/common/listener"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/option"
@@ -35,6 +36,7 @@ type DefaultDialer struct {
 	udpListener            net.ListenConfig
 	udpAddr4               string
 	udpAddr6               string
+	netns                  string
 	networkManager         adapter.NetworkManager
 	networkStrategy        *C.NetworkStrategy
 	defaultNetworkStrategy bool
@@ -69,18 +71,8 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		listener.Control = control.Append(listener.Control, bindFunc)
 	}
 	if options.RoutingMark > 0 {
-		dialer.Control = control.Append(dialer.Control, control.RoutingMark(uint32(options.RoutingMark)))
-		listener.Control = control.Append(listener.Control, control.RoutingMark(uint32(options.RoutingMark)))
-	}
-	if networkManager != nil {
-		autoRedirectOutputMark := networkManager.AutoRedirectOutputMark()
-		if autoRedirectOutputMark > 0 {
-			if options.RoutingMark > 0 {
-				return nil, E.New("`routing_mark` is conflict with `tun.auto_redirect` with `tun.route_[_exclude]_address_set")
-			}
-			dialer.Control = control.Append(dialer.Control, control.RoutingMark(autoRedirectOutputMark))
-			listener.Control = control.Append(listener.Control, control.RoutingMark(autoRedirectOutputMark))
-		}
+		dialer.Control = control.Append(dialer.Control, setMarkWrapper(networkManager, uint32(options.RoutingMark), false))
+		listener.Control = control.Append(listener.Control, setMarkWrapper(networkManager, uint32(options.RoutingMark), false))
 	}
 	disableDefaultBind := options.BindInterface != "" || options.Inet4BindAddress != nil || options.Inet6BindAddress != nil
 	if disableDefaultBind || options.TCPFastOpen {
@@ -125,8 +117,8 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 			}
 		}
 		if options.RoutingMark == 0 && defaultOptions.RoutingMark != 0 {
-			dialer.Control = control.Append(dialer.Control, control.RoutingMark(defaultOptions.RoutingMark))
-			listener.Control = control.Append(listener.Control, control.RoutingMark(defaultOptions.RoutingMark))
+			dialer.Control = control.Append(dialer.Control, setMarkWrapper(networkManager, defaultOptions.RoutingMark, true))
+			listener.Control = control.Append(listener.Control, setMarkWrapper(networkManager, defaultOptions.RoutingMark, true))
 		}
 	}
 	if options.ReuseAddr {
@@ -198,6 +190,7 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		udpListener:            listener,
 		udpAddr4:               udpAddr4,
 		udpAddr6:               udpAddr6,
+		netns:                  options.NetNs,
 		networkManager:         networkManager,
 		networkStrategy:        networkStrategy,
 		defaultNetworkStrategy: defaultNetworkStrategy,
@@ -207,24 +200,44 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 	}, nil
 }
 
+func setMarkWrapper(networkManager adapter.NetworkManager, mark uint32, isDefault bool) control.Func {
+	if networkManager == nil {
+		return control.RoutingMark(mark)
+	}
+	return func(network, address string, conn syscall.RawConn) error {
+		if networkManager.AutoRedirectOutputMark() != 0 {
+			if isDefault {
+				return E.New("`route.default_mark` is conflict with `tun.auto_redirect`")
+			} else {
+				return E.New("`routing_mark` is conflict with `tun.auto_redirect`")
+			}
+		}
+		return control.RoutingMark(mark)(network, address, conn)
+	}
+}
+
 func (d *DefaultDialer) DialContext(ctx context.Context, network string, address M.Socksaddr) (net.Conn, error) {
 	if !address.IsValid() {
 		return nil, E.New("invalid address")
+	} else if address.IsFqdn() {
+		return nil, E.New("domain not resolved")
 	}
 	if d.networkStrategy == nil {
-		switch N.NetworkName(network) {
-		case N.NetworkUDP:
-			if !address.IsIPv6() {
-				return trackConn(d.udpDialer4.DialContext(ctx, network, address.String()))
-			} else {
-				return trackConn(d.udpDialer6.DialContext(ctx, network, address.String()))
+		return trackConn(listener.ListenNetworkNamespace[net.Conn](d.netns, func() (net.Conn, error) {
+			switch N.NetworkName(network) {
+			case N.NetworkUDP:
+				if !address.IsIPv6() {
+					return d.udpDialer4.DialContext(ctx, network, address.String())
+				} else {
+					return d.udpDialer6.DialContext(ctx, network, address.String())
+				}
 			}
-		}
-		if !address.IsIPv6() {
-			return trackConn(DialSlowContext(&d.dialer4, ctx, network, address))
-		} else {
-			return trackConn(DialSlowContext(&d.dialer6, ctx, network, address))
-		}
+			if !address.IsIPv6() {
+				return DialSlowContext(&d.dialer4, ctx, network, address)
+			} else {
+				return DialSlowContext(&d.dialer6, ctx, network, address)
+			}
+		}))
 	} else {
 		return d.DialParallelInterface(ctx, network, address, d.networkStrategy, d.networkType, d.fallbackNetworkType, d.networkFallbackDelay)
 	}
@@ -280,13 +293,15 @@ func (d *DefaultDialer) DialParallelInterface(ctx context.Context, network strin
 
 func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
 	if d.networkStrategy == nil {
-		if destination.IsIPv6() {
-			return trackPacketConn(d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr6))
-		} else if destination.IsIPv4() && !destination.Addr.IsUnspecified() {
-			return trackPacketConn(d.udpListener.ListenPacket(ctx, N.NetworkUDP+"4", d.udpAddr4))
-		} else {
-			return trackPacketConn(d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr4))
-		}
+		return trackPacketConn(listener.ListenNetworkNamespace[net.PacketConn](d.netns, func() (net.PacketConn, error) {
+			if destination.IsIPv6() {
+				return d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr6)
+			} else if destination.IsIPv4() && !destination.Addr.IsUnspecified() {
+				return d.udpListener.ListenPacket(ctx, N.NetworkUDP+"4", d.udpAddr4)
+			} else {
+				return d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr4)
+			}
+		}))
 	} else {
 		return d.ListenSerialInterfacePacket(ctx, destination, d.networkStrategy, d.networkType, d.fallbackNetworkType, d.networkFallbackDelay)
 	}

common/dialer/detour.go

@@ -6,26 +6,39 @@ import (
 	"sync"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 )
 
+type DirectDialer interface {
+	IsEmpty() bool
+}
+
 type DetourDialer struct {
 	outboundManager adapter.OutboundManager
 	detour          string
+	legacyDNSDialer bool
 	dialer          N.Dialer
 	initOnce        sync.Once
 	initErr         error
 }
 
-func NewDetour(outboundManager adapter.OutboundManager, detour string) N.Dialer {
-	return &DetourDialer{outboundManager: outboundManager, detour: detour}
+func NewDetour(outboundManager adapter.OutboundManager, detour string, legacyDNSDialer bool) N.Dialer {
+	return &DetourDialer{
+		outboundManager: outboundManager,
+		detour:          detour,
+		legacyDNSDialer: legacyDNSDialer,
+	}
 }
 
-func (d *DetourDialer) Start() error {
-	_, err := d.Dialer()
-	return err
+func InitializeDetour(dialer N.Dialer) error {
+	detourDialer, isDetour := common.Cast[*DetourDialer](dialer)
+	if !isDetour {
+		return nil
+	}
+	return common.Error(detourDialer.Dialer())
 }
 
 func (d *DetourDialer) Dialer() (N.Dialer, error) {
@@ -34,11 +47,20 @@ func (d *DetourDialer) Dialer() (N.Dialer, error) {
 }
 
 func (d *DetourDialer) init() {
-	var loaded bool
-	d.dialer, loaded = d.outboundManager.Outbound(d.detour)
+	dialer, loaded := d.outboundManager.Outbound(d.detour)
 	if !loaded {
 		d.initErr = E.New("outbound detour not found: ", d.detour)
+		return
 	}
+	if !d.legacyDNSDialer {
+		if directDialer, isDirect := dialer.(DirectDialer); isDirect {
+			if directDialer.IsEmpty() {
+				d.initErr = E.New("detour to an empty direct outbound makes no sense")
+				return
+			}
+		}
+	}
+	d.dialer = dialer
 }
 
 func (d *DetourDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {

common/dialer/dialer.go

@@ -22,6 +22,9 @@ type Options struct {
 	RemoteIsDomain   bool
 	DirectResolver   bool
 	ResolverOnDetour bool
+	NewDialer        bool
+	LegacyDNSDialer  bool
+	DirectOutbound   bool
 }
 
 // TODO: merge with NewWithOptions
@@ -44,14 +47,14 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 		if outboundManager == nil {
 			return nil, E.New("missing outbound manager")
 		}
-		dialer = NewDetour(outboundManager, dialOptions.Detour)
+		dialer = NewDetour(outboundManager, dialOptions.Detour, options.LegacyDNSDialer)
 	} else {
 		dialer, err = NewDefault(options.Context, dialOptions)
 		if err != nil {
 			return nil, err
 		}
 	}
-	if options.RemoteIsDomain && (dialOptions.Detour == "" || options.ResolverOnDetour) {
+	if options.RemoteIsDomain && (dialOptions.Detour == "" || options.ResolverOnDetour || dialOptions.DomainResolver != nil && dialOptions.DomainResolver.Server != "") {
 		networkManager := service.FromContext[adapter.NetworkManager](options.Context)
 		dnsTransport := service.FromContext[adapter.DNSTransportManager](options.Context)
 		var defaultOptions adapter.NetworkOptions
@@ -80,6 +83,7 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 			dialOptions.DomainStrategy != option.DomainStrategy(C.DomainStrategyAsIS) {
 				//nolint:staticcheck
 				strategy = C.DomainStrategy(dialOptions.DomainStrategy)
+				deprecated.Report(options.Context, deprecated.OptionLegacyDomainStrategyOptions)
 			}
 			server = dialOptions.DomainResolver.Server
 			dnsQueryOptions = adapter.DNSQueryOptions{
@@ -92,16 +96,32 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 			resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
 		} else if options.DirectResolver {
 			return nil, E.New("missing domain resolver for domain server address")
-		} else if defaultOptions.DomainResolver != "" {
-			dnsQueryOptions = defaultOptions.DomainResolveOptions
-			transport, loaded := dnsTransport.Transport(defaultOptions.DomainResolver)
-			if !loaded {
-				return nil, E.New("default domain resolver not found: " + defaultOptions.DomainResolver)
-			}
-			dnsQueryOptions.Transport = transport
-			resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
 		} else {
-			deprecated.Report(options.Context, deprecated.OptionMissingDomainResolver)
+			if defaultOptions.DomainResolver != "" {
+				dnsQueryOptions = defaultOptions.DomainResolveOptions
+				transport, loaded := dnsTransport.Transport(defaultOptions.DomainResolver)
+				if !loaded {
+					return nil, E.New("default domain resolver not found: " + defaultOptions.DomainResolver)
+				}
+				dnsQueryOptions.Transport = transport
+				resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
+			} else {
+				transports := dnsTransport.Transports()
+				if len(transports) < 2 {
+					dnsQueryOptions.Transport = dnsTransport.Default()
+				} else if options.NewDialer {
+					return nil, E.New("missing domain resolver for domain server address")
+				} else if !options.DirectOutbound {
+					deprecated.Report(options.Context, deprecated.OptionMissingDomainResolver)
+				}
+			}
+			if
+			//nolint:staticcheck
+			dialOptions.DomainStrategy != option.DomainStrategy(C.DomainStrategyAsIS) {
+				//nolint:staticcheck
+				dnsQueryOptions.Strategy = C.DomainStrategy(dialOptions.DomainStrategy)
+				deprecated.Report(options.Context, deprecated.OptionLegacyDomainStrategyOptions)
+			}
 		}
 		dialer = NewResolveDialer(
 			options.Context,

common/dialer/resolve.go

@@ -44,6 +44,20 @@ type resolveDialer struct {
 }
 
 func NewResolveDialer(ctx context.Context, dialer N.Dialer, parallel bool, server string, queryOptions adapter.DNSQueryOptions, fallbackDelay time.Duration) ResolveDialer {
+	if parallelDialer, isParallel := dialer.(ParallelInterfaceDialer); isParallel {
+		return &resolveParallelNetworkDialer{
+			resolveDialer{
+				transport:     service.FromContext[adapter.DNSTransportManager](ctx),
+				router:        service.FromContext[adapter.DNSRouter](ctx),
+				dialer:        dialer,
+				parallel:      parallel,
+				server:        server,
+				queryOptions:  queryOptions,
+				fallbackDelay: fallbackDelay,
+			},
+			parallelDialer,
+		}
+	}
 	return &resolveDialer{
 		transport:     service.FromContext[adapter.DNSTransportManager](ctx),
 		router:        service.FromContext[adapter.DNSRouter](ctx),
@@ -60,21 +74,6 @@ type resolveParallelNetworkDialer struct {
 	dialer ParallelInterfaceDialer
 }
 
-func NewResolveParallelInterfaceDialer(ctx context.Context, dialer ParallelInterfaceDialer, parallel bool, server string, queryOptions adapter.DNSQueryOptions, fallbackDelay time.Duration) ParallelInterfaceResolveDialer {
-	return &resolveParallelNetworkDialer{
-		resolveDialer{
-			transport:     service.FromContext[adapter.DNSTransportManager](ctx),
-			router:        service.FromContext[adapter.DNSRouter](ctx),
-			dialer:        dialer,
-			parallel:      parallel,
-			server:        server,
-			queryOptions:  queryOptions,
-			fallbackDelay: fallbackDelay,
-		},
-		dialer,
-	}
-}
-
 func (d *resolveDialer) initialize() error {
 	d.initOnce.Do(d.initServer)
 	return d.initErr

common/listener/listener.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"net"
 	"net/netip"
+	"runtime"
+	"strings"
 	"sync/atomic"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -14,6 +16,8 @@ import (
 	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+
+	"github.com/vishvananda/netns"
 )
 
 type Listener struct {
@@ -135,3 +139,30 @@ func (l *Listener) UDPConn() *net.UDPConn {
 func (l *Listener) ListenOptions() option.ListenOptions {
 	return l.listenOptions
 }
+
+func ListenNetworkNamespace[T any](nameOrPath string, block func() (T, error)) (T, error) {
+	if nameOrPath != "" {
+		runtime.LockOSThread()
+		defer runtime.UnlockOSThread()
+		currentNs, err := netns.Get()
+		if err != nil {
+			return common.DefaultValue[T](), E.Cause(err, "get current netns")
+		}
+		defer netns.Set(currentNs)
+		var targetNs netns.NsHandle
+		if strings.HasPrefix(nameOrPath, "/") {
+			targetNs, err = netns.GetFromPath(nameOrPath)
+		} else {
+			targetNs, err = netns.GetFromName(nameOrPath)
+		}
+		if err != nil {
+			return common.DefaultValue[T](), E.Cause(err, "get netns ", nameOrPath)
+		}
+		defer targetNs.Close()
+		err = netns.Set(targetNs)
+		if err != nil {
+			return common.DefaultValue[T](), E.Cause(err, "set netns to ", nameOrPath)
+		}
+	}
+	return block()
+}

common/listener/listener_tcp.go

@@ -8,18 +8,32 @@ import (
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
 
 	"github.com/metacubex/tfo-go"
 )
 
 func (l *Listener) ListenTCP() (net.Listener, error) {
+	//nolint:staticcheck
+	if l.listenOptions.ProxyProtocol || l.listenOptions.ProxyProtocolAcceptNoHeader {
+		return nil, E.New("Proxy Protocol is deprecated and removed in sing-box 1.6.0")
+	}
 	var err error
 	bindAddr := M.SocksaddrFrom(l.listenOptions.Listen.Build(netip.AddrFrom4([4]byte{127, 0, 0, 1})), l.listenOptions.ListenPort)
-	var tcpListener net.Listener
 	var listenConfig net.ListenConfig
+	if l.listenOptions.BindInterface != "" {
+		listenConfig.Control = control.Append(listenConfig.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+	}
+	if l.listenOptions.RoutingMark != 0 {
+		listenConfig.Control = control.Append(listenConfig.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+	}
+	if l.listenOptions.ReuseAddr {
+		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
+	}
 	if l.listenOptions.TCPKeepAlive >= 0 {
 		keepIdle := time.Duration(l.listenOptions.TCPKeepAlive)
 		if keepIdle == 0 {
@@ -37,20 +51,19 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 		}
 		setMultiPathTCP(&listenConfig)
 	}
-	if l.listenOptions.TCPFastOpen {
-		var tfoConfig tfo.ListenConfig
-		tfoConfig.ListenConfig = listenConfig
-		tcpListener, err = tfoConfig.Listen(l.ctx, M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.String())
-	} else {
-		tcpListener, err = listenConfig.Listen(l.ctx, M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.String())
-	}
-	if err == nil {
-		l.logger.Info("tcp server started at ", tcpListener.Addr())
-	}
-	//nolint:staticcheck
-	if l.listenOptions.ProxyProtocol || l.listenOptions.ProxyProtocolAcceptNoHeader {
-		return nil, E.New("Proxy Protocol is deprecated and removed in sing-box 1.6.0")
+	tcpListener, err := ListenNetworkNamespace[net.Listener](l.listenOptions.NetNs, func() (net.Listener, error) {
+		if l.listenOptions.TCPFastOpen {
+			var tfoConfig tfo.ListenConfig
+			tfoConfig.ListenConfig = listenConfig
+			return tfoConfig.Listen(l.ctx, M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.String())
+		} else {
+			return listenConfig.Listen(l.ctx, M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.String())
+		}
+	})
+	if err != nil {
+		return nil, err
 	}
+	l.logger.Info("tcp server started at ", tcpListener.Addr())
 	l.tcpListener = tcpListener
 	return tcpListener, err
 }

common/listener/listener_udp.go

@@ -1,20 +1,32 @@
 package listener
 
 import (
+	"context"
 	"net"
 	"net/netip"
 	"os"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing/common/buf"
 	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
 )
 
 func (l *Listener) ListenUDP() (net.PacketConn, error) {
 	bindAddr := M.SocksaddrFrom(l.listenOptions.Listen.Build(netip.AddrFrom4([4]byte{127, 0, 0, 1})), l.listenOptions.ListenPort)
-	var lc net.ListenConfig
+	var listenConfig net.ListenConfig
+	if l.listenOptions.BindInterface != "" {
+		listenConfig.Control = control.Append(listenConfig.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+	}
+	if l.listenOptions.RoutingMark != 0 {
+		listenConfig.Control = control.Append(listenConfig.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+	}
+	if l.listenOptions.ReuseAddr {
+		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
+	}
 	var udpFragment bool
 	if l.listenOptions.UDPFragment != nil {
 		udpFragment = *l.listenOptions.UDPFragment
@@ -22,9 +34,11 @@ func (l *Listener) ListenUDP() (net.PacketConn, error) {
 		udpFragment = l.listenOptions.UDPFragmentDefault
 	}
 	if !udpFragment {
-		lc.Control = control.Append(lc.Control, control.DisableUDPFragment())
+		listenConfig.Control = control.Append(listenConfig.Control, control.DisableUDPFragment())
 	}
-	udpConn, err := lc.ListenPacket(l.ctx, M.NetworkFromNetAddr(N.NetworkUDP, bindAddr.Addr), bindAddr.String())
+	udpConn, err := ListenNetworkNamespace[net.PacketConn](l.listenOptions.NetNs, func() (net.PacketConn, error) {
+		return listenConfig.ListenPacket(l.ctx, M.NetworkFromNetAddr(N.NetworkUDP, bindAddr.Addr), bindAddr.String())
+	})
 	if err != nil {
 		return nil, err
 	}
@@ -34,6 +48,36 @@ func (l *Listener) ListenUDP() (net.PacketConn, error) {
 	return udpConn, err
 }
 
+func (l *Listener) DialContext(dialer net.Dialer, ctx context.Context, network string, address string) (net.Conn, error) {
+	return ListenNetworkNamespace[net.Conn](l.listenOptions.NetNs, func() (net.Conn, error) {
+		if l.listenOptions.BindInterface != "" {
+			dialer.Control = control.Append(dialer.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+		}
+		if l.listenOptions.RoutingMark != 0 {
+			dialer.Control = control.Append(dialer.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+		}
+		if l.listenOptions.ReuseAddr {
+			dialer.Control = control.Append(dialer.Control, control.ReuseAddr())
+		}
+		return dialer.DialContext(ctx, network, address)
+	})
+}
+
+func (l *Listener) ListenPacket(listenConfig net.ListenConfig, ctx context.Context, network string, address string) (net.PacketConn, error) {
+	return ListenNetworkNamespace[net.PacketConn](l.listenOptions.NetNs, func() (net.PacketConn, error) {
+		if l.listenOptions.BindInterface != "" {
+			listenConfig.Control = control.Append(listenConfig.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+		}
+		if l.listenOptions.RoutingMark != 0 {
+			listenConfig.Control = control.Append(listenConfig.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+		}
+		if l.listenOptions.ReuseAddr {
+			listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
+		}
+		return listenConfig.ListenPacket(ctx, network, address)
+	})
+}
+
 func (l *Listener) UDPAddr() M.Socksaddr {
 	return l.udpAddr
 }

common/sniff/ntp.go

@@ -0,0 +1,58 @@
+package sniff
+
+import (
+	"context"
+	"encoding/binary"
+	"os"
+
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+)
+
+func NTP(ctx context.Context, metadata *adapter.InboundContext, packet []byte) error {
+	// NTP packets must be at least 48 bytes long (standard NTP header size).
+	pLen := len(packet)
+	if pLen < 48 {
+		return os.ErrInvalid
+	}
+	// Check the LI (Leap Indicator) and Version Number (VN) in the first byte.
+	// We'll primarily focus on ensuring the version is valid for NTP.
+	// Many NTP versions are used, but let's check for generally accepted ones (3 & 4 for IPv4, plus potential extensions/customizations)
+	firstByte := packet[0]
+	li := (firstByte >> 6) & 0x03 // Extract LI
+	vn := (firstByte >> 3) & 0x07 // Extract VN
+	mode := firstByte & 0x07      // Extract Mode
+
+	// Leap Indicator should be a valid value (0-3).
+	if li > 3 {
+		return os.ErrInvalid
+	}
+
+	// Version Check (common NTP versions are 3 and 4)
+	if vn != 3 && vn != 4 {
+		return os.ErrInvalid
+	}
+
+	// Check the Mode field for a client request (Mode 3).  This validates it *is* a request.
+	if mode != 3 {
+		return os.ErrInvalid
+	}
+
+	// Check Root Delay and Root Dispersion. While not strictly *required* for a request,
+	// we can check if they appear to be reasonable values (not excessively large).
+	rootDelay := binary.BigEndian.Uint32(packet[4:8])
+	rootDispersion := binary.BigEndian.Uint32(packet[8:12])
+
+	// Check for unreasonably large root delay and dispersion.  NTP RFC specifies max values of approximately 16 seconds.
+	// Convert to milliseconds for easy comparison.  Each unit is 1/2^16 seconds.
+	if float64(rootDelay)/65536.0 > 16.0 {
+		return os.ErrInvalid
+	}
+	if float64(rootDispersion)/65536.0 > 16.0 {
+		return os.ErrInvalid
+	}
+
+	metadata.Protocol = C.ProtocolNTP
+
+	return nil
+}

common/sniff/ntp_test.go

@@ -0,0 +1,33 @@
+package sniff_test
+
+import (
+	"context"
+	"encoding/hex"
+	"os"
+	"testing"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/sniff"
+	C "github.com/sagernet/sing-box/constant"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestSniffNTP(t *testing.T) {
+	t.Parallel()
+	packet, err := hex.DecodeString("1b0006000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
+	require.NoError(t, err)
+	var metadata adapter.InboundContext
+	err = sniff.NTP(context.Background(), &metadata, packet)
+	require.NoError(t, err)
+	require.Equal(t, metadata.Protocol, C.ProtocolNTP)
+}
+
+func TestSniffNTPFailed(t *testing.T) {
+	t.Parallel()
+	packet, err := hex.DecodeString("400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
+	require.NoError(t, err)
+	var metadata adapter.InboundContext
+	err = sniff.NTP(context.Background(), &metadata, packet)
+	require.ErrorIs(t, err, os.ErrInvalid)
+}

common/tls/acme.go

@@ -16,7 +16,7 @@ import (
 	"github.com/caddyserver/certmagic"
 	"github.com/libdns/alidns"
 	"github.com/libdns/cloudflare"
-	"github.com/mholt/acmez/acme"
+	"github.com/mholt/acmez/v3/acme"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )

common/tls/client.go

@@ -29,15 +29,12 @@ func NewClient(ctx context.Context, serverAddress string, options option.Outboun
 	if !options.Enabled {
 		return nil, nil
 	}
-	if options.ECH != nil && options.ECH.Enabled {
-		return NewECHClient(ctx, serverAddress, options)
-	} else if options.Reality != nil && options.Reality.Enabled {
+	if options.Reality != nil && options.Reality.Enabled {
 		return NewRealityClient(ctx, serverAddress, options)
 	} else if options.UTLS != nil && options.UTLS.Enabled {
 		return NewUTLSClient(ctx, serverAddress, options)
-	} else {
-		return NewSTDClient(ctx, serverAddress, options)
 	}
+	return NewSTDClient(ctx, serverAddress, options)
 }
 
 func ClientHandshake(ctx context.Context, conn net.Conn, config Config) (Conn, error) {

common/tls/config.go

@@ -18,6 +18,7 @@ type (
 	STDConfig       = tls.Config
 	STDConn         = tls.Conn
 	ConnectionState = tls.ConnectionState
+	CurveID         = tls.CurveID
 )
 
 func ParseTLSVersion(version string) (uint16, error) {

common/tls/ech.go

@@ -0,0 +1,194 @@
+//go:build go1.24
+
+package tls
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/base64"
+	"encoding/pem"
+	"net"
+	"os"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/experimental/deprecated"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	aTLS "github.com/sagernet/sing/common/tls"
+	"github.com/sagernet/sing/service"
+
+	mDNS "github.com/miekg/dns"
+	"golang.org/x/crypto/cryptobyte"
+)
+
+func parseECHClientConfig(ctx context.Context, options option.OutboundTLSOptions, tlsConfig *tls.Config) (Config, error) {
+	var echConfig []byte
+	if len(options.ECH.Config) > 0 {
+		echConfig = []byte(strings.Join(options.ECH.Config, "\n"))
+	} else if options.ECH.ConfigPath != "" {
+		content, err := os.ReadFile(options.ECH.ConfigPath)
+		if err != nil {
+			return nil, E.Cause(err, "read ECH config")
+		}
+		echConfig = content
+	}
+	//nolint:staticcheck
+	if options.ECH.PQSignatureSchemesEnabled || options.ECH.DynamicRecordSizingDisabled {
+		deprecated.Report(ctx, deprecated.OptionLegacyECHOptions)
+	}
+	if len(echConfig) > 0 {
+		block, rest := pem.Decode(echConfig)
+		if block == nil || block.Type != "ECH CONFIGS" || len(rest) > 0 {
+			return nil, E.New("invalid ECH configs pem")
+		}
+		tlsConfig.EncryptedClientHelloConfigList = block.Bytes
+		return &STDClientConfig{tlsConfig}, nil
+	} else {
+		return &STDECHClientConfig{
+			STDClientConfig: STDClientConfig{tlsConfig},
+			dnsRouter:       service.FromContext[adapter.DNSRouter](ctx),
+		}, nil
+	}
+}
+
+func parseECHServerConfig(ctx context.Context, options option.InboundTLSOptions, tlsConfig *tls.Config, echKeyPath *string) error {
+	var echKey []byte
+	if len(options.ECH.Key) > 0 {
+		echKey = []byte(strings.Join(options.ECH.Key, "\n"))
+	} else if options.ECH.KeyPath != "" {
+		content, err := os.ReadFile(options.ECH.KeyPath)
+		if err != nil {
+			return E.Cause(err, "read ECH keys")
+		}
+		echKey = content
+		*echKeyPath = options.ECH.KeyPath
+	} else {
+		return E.New("missing ECH keys")
+	}
+	block, rest := pem.Decode(echKey)
+	if block == nil || block.Type != "ECH KEYS" || len(rest) > 0 {
+		return E.New("invalid ECH keys pem")
+	}
+	echKeys, err := UnmarshalECHKeys(block.Bytes)
+	if err != nil {
+		return E.Cause(err, "parse ECH keys")
+	}
+	tlsConfig.EncryptedClientHelloKeys = echKeys
+	//nolint:staticcheck
+	if options.ECH.PQSignatureSchemesEnabled || options.ECH.DynamicRecordSizingDisabled {
+		deprecated.Report(ctx, deprecated.OptionLegacyECHOptions)
+	}
+	return nil
+}
+
+func reloadECHKeys(echKeyPath string, tlsConfig *tls.Config) error {
+	echKey, err := os.ReadFile(echKeyPath)
+	if err != nil {
+		return E.Cause(err, "reload ECH keys from ", echKeyPath)
+	}
+	block, _ := pem.Decode(echKey)
+	if block == nil || block.Type != "ECH KEYS" {
+		return E.New("invalid ECH keys pem")
+	}
+	echKeys, err := UnmarshalECHKeys(block.Bytes)
+	if err != nil {
+		return E.Cause(err, "parse ECH keys")
+	}
+	tlsConfig.EncryptedClientHelloKeys = echKeys
+	return nil
+}
+
+type STDECHClientConfig struct {
+	STDClientConfig
+	access     sync.Mutex
+	dnsRouter  adapter.DNSRouter
+	lastTTL    time.Duration
+	lastUpdate time.Time
+}
+
+func (s *STDECHClientConfig) ClientHandshake(ctx context.Context, conn net.Conn) (aTLS.Conn, error) {
+	tlsConn, err := s.fetchAndHandshake(ctx, conn)
+	if err != nil {
+		return nil, err
+	}
+	err = tlsConn.HandshakeContext(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return tlsConn, nil
+}
+
+func (s *STDECHClientConfig) fetchAndHandshake(ctx context.Context, conn net.Conn) (aTLS.Conn, error) {
+	s.access.Lock()
+	defer s.access.Unlock()
+	if len(s.config.EncryptedClientHelloConfigList) == 0 || s.lastTTL == 0 || time.Now().Sub(s.lastUpdate) > s.lastTTL {
+		message := &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				RecursionDesired: true,
+			},
+			Question: []mDNS.Question{
+				{
+					Name:   mDNS.Fqdn(s.config.ServerName),
+					Qtype:  mDNS.TypeHTTPS,
+					Qclass: mDNS.ClassINET,
+				},
+			},
+		}
+		response, err := s.dnsRouter.Exchange(ctx, message, adapter.DNSQueryOptions{})
+		if err != nil {
+			return nil, E.Cause(err, "fetch ECH config list")
+		}
+		if response.Rcode != mDNS.RcodeSuccess {
+			return nil, E.Cause(dns.RcodeError(response.Rcode), "fetch ECH config list")
+		}
+	match:
+		for _, rr := range response.Answer {
+			switch resource := rr.(type) {
+			case *mDNS.HTTPS:
+				for _, value := range resource.Value {
+					if value.Key().String() == "ech" {
+						echConfigList, err := base64.StdEncoding.DecodeString(value.String())
+						if err != nil {
+							return nil, E.Cause(err, "decode ECH config")
+						}
+						s.lastTTL = time.Duration(rr.Header().Ttl) * time.Second
+						s.lastUpdate = time.Now()
+						s.config.EncryptedClientHelloConfigList = echConfigList
+						break match
+					}
+				}
+			}
+		}
+		if len(s.config.EncryptedClientHelloConfigList) == 0 {
+			return nil, E.New("no ECH config found in DNS records")
+		}
+	}
+	return s.Client(conn)
+}
+
+func (s *STDECHClientConfig) Clone() Config {
+	return &STDECHClientConfig{STDClientConfig: STDClientConfig{s.config.Clone()}, dnsRouter: s.dnsRouter, lastUpdate: s.lastUpdate}
+}
+
+func UnmarshalECHKeys(raw []byte) ([]tls.EncryptedClientHelloKey, error) {
+	var keys []tls.EncryptedClientHelloKey
+	rawString := cryptobyte.String(raw)
+	for !rawString.Empty() {
+		var key tls.EncryptedClientHelloKey
+		if !rawString.ReadUint16LengthPrefixed((*cryptobyte.String)(&key.PrivateKey)) {
+			return nil, E.New("error parsing private key")
+		}
+		if !rawString.ReadUint16LengthPrefixed((*cryptobyte.String)(&key.Config)) {
+			return nil, E.New("error parsing config")
+		}
+		keys = append(keys, key)
+	}
+	if len(keys) == 0 {
+		return nil, E.New("empty ECH keys")
+	}
+	return keys, nil
+}

common/tls/ech_client.go

@@ -1,244 +0,0 @@
-//go:build with_ech
-
-package tls
-
-import (
-	"context"
-	"crypto/tls"
-	"crypto/x509"
-	"encoding/base64"
-	"encoding/pem"
-	"net"
-	"net/netip"
-	"os"
-	"strings"
-
-	cftls "github.com/sagernet/cloudflare-tls"
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/ntp"
-	"github.com/sagernet/sing/service"
-
-	mDNS "github.com/miekg/dns"
-)
-
-type echClientConfig struct {
-	config *cftls.Config
-}
-
-func (c *echClientConfig) ServerName() string {
-	return c.config.ServerName
-}
-
-func (c *echClientConfig) SetServerName(serverName string) {
-	c.config.ServerName = serverName
-}
-
-func (c *echClientConfig) NextProtos() []string {
-	return c.config.NextProtos
-}
-
-func (c *echClientConfig) SetNextProtos(nextProto []string) {
-	c.config.NextProtos = nextProto
-}
-
-func (c *echClientConfig) Config() (*STDConfig, error) {
-	return nil, E.New("unsupported usage for ECH")
-}
-
-func (c *echClientConfig) Client(conn net.Conn) (Conn, error) {
-	return &echConnWrapper{cftls.Client(conn, c.config)}, nil
-}
-
-func (c *echClientConfig) Clone() Config {
-	return &echClientConfig{
-		config: c.config.Clone(),
-	}
-}
-
-type echConnWrapper struct {
-	*cftls.Conn
-}
-
-func (c *echConnWrapper) ConnectionState() tls.ConnectionState {
-	state := c.Conn.ConnectionState()
-	//nolint:staticcheck
-	return tls.ConnectionState{
-		Version:                     state.Version,
-		HandshakeComplete:           state.HandshakeComplete,
-		DidResume:                   state.DidResume,
-		CipherSuite:                 state.CipherSuite,
-		NegotiatedProtocol:          state.NegotiatedProtocol,
-		NegotiatedProtocolIsMutual:  state.NegotiatedProtocolIsMutual,
-		ServerName:                  state.ServerName,
-		PeerCertificates:            state.PeerCertificates,
-		VerifiedChains:              state.VerifiedChains,
-		SignedCertificateTimestamps: state.SignedCertificateTimestamps,
-		OCSPResponse:                state.OCSPResponse,
-		TLSUnique:                   state.TLSUnique,
-	}
-}
-
-func (c *echConnWrapper) Upstream() any {
-	return c.Conn
-}
-
-func NewECHClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	var serverName string
-	if options.ServerName != "" {
-		serverName = options.ServerName
-	} else if serverAddress != "" {
-		if _, err := netip.ParseAddr(serverName); err != nil {
-			serverName = serverAddress
-		}
-	}
-	if serverName == "" && !options.Insecure {
-		return nil, E.New("missing server_name or insecure=true")
-	}
-
-	var tlsConfig cftls.Config
-	tlsConfig.Time = ntp.TimeFuncFromContext(ctx)
-	tlsConfig.RootCAs = adapter.RootPoolFromContext(ctx)
-	if options.DisableSNI {
-		tlsConfig.ServerName = "127.0.0.1"
-	} else {
-		tlsConfig.ServerName = serverName
-	}
-	if options.Insecure {
-		tlsConfig.InsecureSkipVerify = options.Insecure
-	} else if options.DisableSNI {
-		tlsConfig.InsecureSkipVerify = true
-		tlsConfig.VerifyConnection = func(state cftls.ConnectionState) error {
-			verifyOptions := x509.VerifyOptions{
-				DNSName:       serverName,
-				Intermediates: x509.NewCertPool(),
-			}
-			for _, cert := range state.PeerCertificates[1:] {
-				verifyOptions.Intermediates.AddCert(cert)
-			}
-			_, err := state.PeerCertificates[0].Verify(verifyOptions)
-			return err
-		}
-	}
-	if len(options.ALPN) > 0 {
-		tlsConfig.NextProtos = options.ALPN
-	}
-	if options.MinVersion != "" {
-		minVersion, err := ParseTLSVersion(options.MinVersion)
-		if err != nil {
-			return nil, E.Cause(err, "parse min_version")
-		}
-		tlsConfig.MinVersion = minVersion
-	}
-	if options.MaxVersion != "" {
-		maxVersion, err := ParseTLSVersion(options.MaxVersion)
-		if err != nil {
-			return nil, E.Cause(err, "parse max_version")
-		}
-		tlsConfig.MaxVersion = maxVersion
-	}
-	if options.CipherSuites != nil {
-	find:
-		for _, cipherSuite := range options.CipherSuites {
-			for _, tlsCipherSuite := range cftls.CipherSuites() {
-				if cipherSuite == tlsCipherSuite.Name {
-					tlsConfig.CipherSuites = append(tlsConfig.CipherSuites, tlsCipherSuite.ID)
-					continue find
-				}
-			}
-			return nil, E.New("unknown cipher_suite: ", cipherSuite)
-		}
-	}
-	var certificate []byte
-	if len(options.Certificate) > 0 {
-		certificate = []byte(strings.Join(options.Certificate, "\n"))
-	} else if options.CertificatePath != "" {
-		content, err := os.ReadFile(options.CertificatePath)
-		if err != nil {
-			return nil, E.Cause(err, "read certificate")
-		}
-		certificate = content
-	}
-	if len(certificate) > 0 {
-		certPool := x509.NewCertPool()
-		if !certPool.AppendCertsFromPEM(certificate) {
-			return nil, E.New("failed to parse certificate:\n\n", certificate)
-		}
-		tlsConfig.RootCAs = certPool
-	}
-
-	// ECH Config
-
-	tlsConfig.ECHEnabled = true
-	tlsConfig.PQSignatureSchemesEnabled = options.ECH.PQSignatureSchemesEnabled
-	tlsConfig.DynamicRecordSizingDisabled = options.ECH.DynamicRecordSizingDisabled
-
-	var echConfig []byte
-	if len(options.ECH.Config) > 0 {
-		echConfig = []byte(strings.Join(options.ECH.Config, "\n"))
-	} else if options.ECH.ConfigPath != "" {
-		content, err := os.ReadFile(options.ECH.ConfigPath)
-		if err != nil {
-			return nil, E.Cause(err, "read ECH config")
-		}
-		echConfig = content
-	}
-
-	if len(echConfig) > 0 {
-		block, rest := pem.Decode(echConfig)
-		if block == nil || block.Type != "ECH CONFIGS" || len(rest) > 0 {
-			return nil, E.New("invalid ECH configs pem")
-		}
-		echConfigs, err := cftls.UnmarshalECHConfigs(block.Bytes)
-		if err != nil {
-			return nil, E.Cause(err, "parse ECH configs")
-		}
-		tlsConfig.ClientECHConfigs = echConfigs
-	} else {
-		tlsConfig.GetClientECHConfigs = fetchECHClientConfig(ctx)
-	}
-	return &echClientConfig{&tlsConfig}, nil
-}
-
-func fetchECHClientConfig(ctx context.Context) func(_ context.Context, serverName string) ([]cftls.ECHConfig, error) {
-	return func(_ context.Context, serverName string) ([]cftls.ECHConfig, error) {
-		message := &mDNS.Msg{
-			MsgHdr: mDNS.MsgHdr{
-				RecursionDesired: true,
-			},
-			Question: []mDNS.Question{
-				{
-					Name:   serverName + ".",
-					Qtype:  mDNS.TypeHTTPS,
-					Qclass: mDNS.ClassINET,
-				},
-			},
-		}
-		response, err := service.FromContext[adapter.DNSRouter](ctx).Exchange(ctx, message, adapter.DNSQueryOptions{})
-		if err != nil {
-			return nil, err
-		}
-		if response.Rcode != mDNS.RcodeSuccess {
-			return nil, dns.RCodeError(response.Rcode)
-		}
-		for _, rr := range response.Answer {
-			switch resource := rr.(type) {
-			case *mDNS.HTTPS:
-				for _, value := range resource.Value {
-					if value.Key().String() == "ech" {
-						echConfig, err := base64.StdEncoding.DecodeString(value.String())
-						if err != nil {
-							return nil, E.Cause(err, "decode ECH config")
-						}
-						return cftls.UnmarshalECHConfigs(echConfig)
-					}
-				}
-			default:
-				return nil, E.New("unknown resource record type: ", resource.Header().Rrtype)
-			}
-		}
-		return nil, E.New("no ECH config found")
-	}
-}

common/tls/ech_keygen.go

@@ -1,5 +1,3 @@
-//go:build with_ech
-
 package tls
 
 import (
@@ -7,14 +5,13 @@ import (
 	"encoding/binary"
 	"encoding/pem"
 
-	cftls "github.com/sagernet/cloudflare-tls"
 	E "github.com/sagernet/sing/common/exceptions"
 
 	"github.com/cloudflare/circl/hpke"
 	"github.com/cloudflare/circl/kem"
 )
 
-func ECHKeygenDefault(serverName string, pqSignatureSchemesEnabled bool) (configPem string, keyPem string, err error) {
+func ECHKeygenDefault(serverName string) (configPem string, keyPem string, err error) {
 	cipherSuites := []echCipherSuite{
 		{
 			kdf:  hpke.KDF_HKDF_SHA256,
@@ -24,13 +21,9 @@ func ECHKeygenDefault(serverName string, pqSignatureSchemesEnabled bool) (config
 			aead: hpke.AEAD_ChaCha20Poly1305,
 		},
 	}
-
 	keyConfig := []myECHKeyConfig{
 		{id: 0, kem: hpke.KEM_X25519_HKDF_SHA256},
 	}
-	if pqSignatureSchemesEnabled {
-		keyConfig = append(keyConfig, myECHKeyConfig{id: 1, kem: hpke.KEM_X25519_KYBER768_DRAFT00})
-	}
 
 	keyPairs, err := echKeygen(0xfe0d, serverName, keyConfig, cipherSuites)
 	if err != nil {
@@ -59,7 +52,6 @@ func ECHKeygenDefault(serverName string, pqSignatureSchemesEnabled bool) (config
 
 type echKeyConfigPair struct {
 	id      uint8
-	key     cftls.EXP_ECHKey
 	rawKey  []byte
 	conf    myECHKeyConfig
 	rawConf []byte
@@ -155,15 +147,6 @@ func echKeygen(version uint16, serverName string, conf []myECHKeyConfig, suite [
 		sk = append(sk, secBuf...)
 		sk = be.AppendUint16(sk, uint16(len(b)))
 		sk = append(sk, b...)
-
-		cfECHKeys, err := cftls.EXP_UnmarshalECHKeys(sk)
-		if err != nil {
-			return nil, E.Cause(err, "bug: can't parse generated ECH server key")
-		}
-		if len(cfECHKeys) != 1 {
-			return nil, E.New("bug: unexpected server key count")
-		}
-		pair.key = cfECHKeys[0]
 		pair.rawKey = sk
 
 		pairs = append(pairs, pair)

common/tls/ech_quic.go

@@ -1,55 +0,0 @@
-//go:build with_quic && with_ech
-
-package tls
-
-import (
-	"context"
-	"net"
-	"net/http"
-
-	"github.com/sagernet/cloudflare-tls"
-	"github.com/sagernet/quic-go/ech"
-	"github.com/sagernet/quic-go/http3_ech"
-	"github.com/sagernet/sing-quic"
-	M "github.com/sagernet/sing/common/metadata"
-)
-
-var (
-	_ qtls.Config       = (*echClientConfig)(nil)
-	_ qtls.ServerConfig = (*echServerConfig)(nil)
-)
-
-func (c *echClientConfig) Dial(ctx context.Context, conn net.PacketConn, addr net.Addr, config *quic.Config) (quic.Connection, error) {
-	return quic.Dial(ctx, conn, addr, c.config, config)
-}
-
-func (c *echClientConfig) DialEarly(ctx context.Context, conn net.PacketConn, addr net.Addr, config *quic.Config) (quic.EarlyConnection, error) {
-	return quic.DialEarly(ctx, conn, addr, c.config, config)
-}
-
-func (c *echClientConfig) CreateTransport(conn net.PacketConn, quicConnPtr *quic.EarlyConnection, serverAddr M.Socksaddr, quicConfig *quic.Config) http.RoundTripper {
-	return &http3.Transport{
-		TLSClientConfig: c.config,
-		QUICConfig:      quicConfig,
-		Dial: func(ctx context.Context, addr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.EarlyConnection, error) {
-			quicConn, err := quic.DialEarly(ctx, conn, serverAddr.UDPAddr(), tlsCfg, cfg)
-			if err != nil {
-				return nil, err
-			}
-			*quicConnPtr = quicConn
-			return quicConn, nil
-		},
-	}
-}
-
-func (c *echServerConfig) Listen(conn net.PacketConn, config *quic.Config) (qtls.Listener, error) {
-	return quic.Listen(conn, c.config, config)
-}
-
-func (c *echServerConfig) ListenEarly(conn net.PacketConn, config *quic.Config) (qtls.EarlyListener, error) {
-	return quic.ListenEarly(conn, c.config, config)
-}
-
-func (c *echServerConfig) ConfigureHTTP3() {
-	http3.ConfigureTLSConfig(c.config)
-}

common/tls/ech_server.go

@@ -1,278 +0,0 @@
-//go:build with_ech
-
-package tls
-
-import (
-	"context"
-	"crypto/tls"
-	"encoding/pem"
-	"net"
-	"os"
-	"strings"
-
-	cftls "github.com/sagernet/cloudflare-tls"
-	"github.com/sagernet/fswatch"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/ntp"
-)
-
-type echServerConfig struct {
-	config          *cftls.Config
-	logger          log.Logger
-	certificate     []byte
-	key             []byte
-	certificatePath string
-	keyPath         string
-	echKeyPath      string
-	watcher         *fswatch.Watcher
-}
-
-func (c *echServerConfig) ServerName() string {
-	return c.config.ServerName
-}
-
-func (c *echServerConfig) SetServerName(serverName string) {
-	c.config.ServerName = serverName
-}
-
-func (c *echServerConfig) NextProtos() []string {
-	return c.config.NextProtos
-}
-
-func (c *echServerConfig) SetNextProtos(nextProto []string) {
-	c.config.NextProtos = nextProto
-}
-
-func (c *echServerConfig) Config() (*STDConfig, error) {
-	return nil, E.New("unsupported usage for ECH")
-}
-
-func (c *echServerConfig) Client(conn net.Conn) (Conn, error) {
-	return &echConnWrapper{cftls.Client(conn, c.config)}, nil
-}
-
-func (c *echServerConfig) Server(conn net.Conn) (Conn, error) {
-	return &echConnWrapper{cftls.Server(conn, c.config)}, nil
-}
-
-func (c *echServerConfig) Clone() Config {
-	return &echServerConfig{
-		config: c.config.Clone(),
-	}
-}
-
-func (c *echServerConfig) Start() error {
-	err := c.startWatcher()
-	if err != nil {
-		c.logger.Warn("create credentials watcher: ", err)
-	}
-	return nil
-}
-
-func (c *echServerConfig) startWatcher() error {
-	var watchPath []string
-	if c.certificatePath != "" {
-		watchPath = append(watchPath, c.certificatePath)
-	}
-	if c.keyPath != "" {
-		watchPath = append(watchPath, c.keyPath)
-	}
-	if c.echKeyPath != "" {
-		watchPath = append(watchPath, c.echKeyPath)
-	}
-	if len(watchPath) == 0 {
-		return nil
-	}
-	watcher, err := fswatch.NewWatcher(fswatch.Options{
-		Path: watchPath,
-		Callback: func(path string) {
-			err := c.credentialsUpdated(path)
-			if err != nil {
-				c.logger.Error(E.Cause(err, "reload credentials"))
-			}
-		},
-	})
-	if err != nil {
-		return err
-	}
-	err = watcher.Start()
-	if err != nil {
-		return err
-	}
-	c.watcher = watcher
-	return nil
-}
-
-func (c *echServerConfig) credentialsUpdated(path string) error {
-	if path == c.certificatePath || path == c.keyPath {
-		if path == c.certificatePath {
-			certificate, err := os.ReadFile(c.certificatePath)
-			if err != nil {
-				return err
-			}
-			c.certificate = certificate
-		} else {
-			key, err := os.ReadFile(c.keyPath)
-			if err != nil {
-				return err
-			}
-			c.key = key
-		}
-		keyPair, err := cftls.X509KeyPair(c.certificate, c.key)
-		if err != nil {
-			return E.Cause(err, "parse key pair")
-		}
-		c.config.Certificates = []cftls.Certificate{keyPair}
-		c.logger.Info("reloaded TLS certificate")
-	} else {
-		echKeyContent, err := os.ReadFile(c.echKeyPath)
-		if err != nil {
-			return err
-		}
-		block, rest := pem.Decode(echKeyContent)
-		if block == nil || block.Type != "ECH KEYS" || len(rest) > 0 {
-			return E.New("invalid ECH keys pem")
-		}
-		echKeys, err := cftls.EXP_UnmarshalECHKeys(block.Bytes)
-		if err != nil {
-			return E.Cause(err, "parse ECH keys")
-		}
-		echKeySet, err := cftls.EXP_NewECHKeySet(echKeys)
-		if err != nil {
-			return E.Cause(err, "create ECH key set")
-		}
-		c.config.ServerECHProvider = echKeySet
-		c.logger.Info("reloaded ECH keys")
-	}
-	return nil
-}
-
-func (c *echServerConfig) Close() error {
-	var err error
-	if c.watcher != nil {
-		err = E.Append(err, c.watcher.Close(), func(err error) error {
-			return E.Cause(err, "close credentials watcher")
-		})
-	}
-	return err
-}
-
-func NewECHServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
-	if !options.Enabled {
-		return nil, nil
-	}
-	var tlsConfig cftls.Config
-	if options.ACME != nil && len(options.ACME.Domain) > 0 {
-		return nil, E.New("acme is unavailable in ech")
-	}
-	tlsConfig.Time = ntp.TimeFuncFromContext(ctx)
-	if options.ServerName != "" {
-		tlsConfig.ServerName = options.ServerName
-	}
-	if len(options.ALPN) > 0 {
-		tlsConfig.NextProtos = append(options.ALPN, tlsConfig.NextProtos...)
-	}
-	if options.MinVersion != "" {
-		minVersion, err := ParseTLSVersion(options.MinVersion)
-		if err != nil {
-			return nil, E.Cause(err, "parse min_version")
-		}
-		tlsConfig.MinVersion = minVersion
-	}
-	if options.MaxVersion != "" {
-		maxVersion, err := ParseTLSVersion(options.MaxVersion)
-		if err != nil {
-			return nil, E.Cause(err, "parse max_version")
-		}
-		tlsConfig.MaxVersion = maxVersion
-	}
-	if options.CipherSuites != nil {
-	find:
-		for _, cipherSuite := range options.CipherSuites {
-			for _, tlsCipherSuite := range tls.CipherSuites() {
-				if cipherSuite == tlsCipherSuite.Name {
-					tlsConfig.CipherSuites = append(tlsConfig.CipherSuites, tlsCipherSuite.ID)
-					continue find
-				}
-			}
-			return nil, E.New("unknown cipher_suite: ", cipherSuite)
-		}
-	}
-	var certificate []byte
-	var key []byte
-	if len(options.Certificate) > 0 {
-		certificate = []byte(strings.Join(options.Certificate, "\n"))
-	} else if options.CertificatePath != "" {
-		content, err := os.ReadFile(options.CertificatePath)
-		if err != nil {
-			return nil, E.Cause(err, "read certificate")
-		}
-		certificate = content
-	}
-	if len(options.Key) > 0 {
-		key = []byte(strings.Join(options.Key, "\n"))
-	} else if options.KeyPath != "" {
-		content, err := os.ReadFile(options.KeyPath)
-		if err != nil {
-			return nil, E.Cause(err, "read key")
-		}
-		key = content
-	}
-
-	if certificate == nil {
-		return nil, E.New("missing certificate")
-	} else if key == nil {
-		return nil, E.New("missing key")
-	}
-
-	keyPair, err := cftls.X509KeyPair(certificate, key)
-	if err != nil {
-		return nil, E.Cause(err, "parse x509 key pair")
-	}
-	tlsConfig.Certificates = []cftls.Certificate{keyPair}
-
-	var echKey []byte
-	if len(options.ECH.Key) > 0 {
-		echKey = []byte(strings.Join(options.ECH.Key, "\n"))
-	} else if options.ECH.KeyPath != "" {
-		content, err := os.ReadFile(options.ECH.KeyPath)
-		if err != nil {
-			return nil, E.Cause(err, "read ECH key")
-		}
-		echKey = content
-	} else {
-		return nil, E.New("missing ECH key")
-	}
-
-	block, rest := pem.Decode(echKey)
-	if block == nil || block.Type != "ECH KEYS" || len(rest) > 0 {
-		return nil, E.New("invalid ECH keys pem")
-	}
-
-	echKeys, err := cftls.EXP_UnmarshalECHKeys(block.Bytes)
-	if err != nil {
-		return nil, E.Cause(err, "parse ECH keys")
-	}
-
-	echKeySet, err := cftls.EXP_NewECHKeySet(echKeys)
-	if err != nil {
-		return nil, E.Cause(err, "create ECH key set")
-	}
-
-	tlsConfig.ECHEnabled = true
-	tlsConfig.PQSignatureSchemesEnabled = options.ECH.PQSignatureSchemesEnabled
-	tlsConfig.DynamicRecordSizingDisabled = options.ECH.DynamicRecordSizingDisabled
-	tlsConfig.ServerECHProvider = echKeySet
-
-	return &echServerConfig{
-		config:          &tlsConfig,
-		logger:          logger,
-		certificate:     certificate,
-		key:             key,
-		certificatePath: options.CertificatePath,
-		keyPath:         options.KeyPath,
-		echKeyPath:      options.ECH.KeyPath,
-	}, nil
-}

common/tls/ech_stub.go

@@ -1,25 +1,23 @@
-//go:build !with_ech
+//go:build !go1.24
 
 package tls
 
 import (
 	"context"
+	"crypto/tls"
 
-	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 )
 
-var errECHNotIncluded = E.New(`ECH is not included in this build, rebuild with -tags with_ech`)
-
-func NewECHServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
-	return nil, errECHNotIncluded
+func parseECHClientConfig(ctx context.Context, options option.OutboundTLSOptions, tlsConfig *tls.Config) (Config, error) {
+	return nil, E.New("ECH requires go1.24, please recompile your binary.")
 }
 
-func NewECHClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return nil, errECHNotIncluded
+func parseECHServerConfig(ctx context.Context, options option.InboundTLSOptions, tlsConfig *tls.Config, echKeyPath *string) error {
+	return E.New("ECH requires go1.24, please recompile your binary.")
 }
 
-func ECHKeygenDefault(host string, pqSignatureSchemesEnabled bool) (configPem string, keyPem string, err error) {
-	return "", "", errECHNotIncluded
+func reloadECHKeys(echKeyPath string, tlsConfig *tls.Config) error {
+	return E.New("ECH requires go1.24, please recompile your binary.")
 }

common/tls/ech_tag_stub.go

@@ -0,0 +1,5 @@
+//go:build with_ech
+
+package tls
+
+var _ int = "Due to the migration to stdlib, the separate `with_ech` build tag has been deprecated and is no longer needed, please update your build configuration."

common/tls/mkcert.go

@@ -12,6 +12,9 @@ import (
 )
 
 func GenerateKeyPair(parent *x509.Certificate, parentKey any, timeFunc func() time.Time, serverName string) (*tls.Certificate, error) {
+	if timeFunc == nil {
+		timeFunc = time.Now
+	}
 	privateKeyPem, publicKeyPem, err := GenerateCertificate(parent, parentKey, timeFunc, serverName, timeFunc().Add(time.Hour))
 	if err != nil {
 		return nil, err
@@ -24,9 +27,6 @@ func GenerateKeyPair(parent *x509.Certificate, parentKey any, timeFunc func() ti
 }
 
 func GenerateCertificate(parent *x509.Certificate, parentKey any, timeFunc func() time.Time, serverName string, expire time.Time) (privateKeyPem []byte, publicKeyPem []byte, err error) {
-	if timeFunc == nil {
-		timeFunc = time.Now
-	}
 	key, err := rsa.GenerateKey(rand.Reader, 2048)
 	if err != nil {
 		return

common/tls/reality_client.go

@@ -29,12 +29,13 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/debug"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/ntp"
 	aTLS "github.com/sagernet/sing/common/tls"
-	utls "github.com/sagernet/utls"
 
+	utls "github.com/metacubex/utls"
 	"golang.org/x/crypto/hkdf"
 	"golang.org/x/net/http2"
 )
@@ -114,6 +115,22 @@ func (e *RealityClientConfig) ClientHandshake(ctx context.Context, conn net.Conn
 	if err != nil {
 		return nil, err
 	}
+	for _, extension := range uConn.Extensions {
+		if ce, ok := extension.(*utls.SupportedCurvesExtension); ok {
+			ce.Curves = common.Filter(ce.Curves, func(curveID utls.CurveID) bool {
+				return curveID != utls.X25519MLKEM768
+			})
+		}
+		if ks, ok := extension.(*utls.KeyShareExtension); ok {
+			ks.KeyShares = common.Filter(ks.KeyShares, func(share utls.KeyShare) bool {
+				return share.Group != utls.X25519MLKEM768
+			})
+		}
+	}
+	err = uConn.BuildHandshakeState()
+	if err != nil {
+		return nil, err
+	}
 
 	if len(uConfig.NextProtos) > 0 {
 		for _, extension := range uConn.Extensions {
@@ -148,9 +165,13 @@ func (e *RealityClientConfig) ClientHandshake(ctx context.Context, conn net.Conn
 	if err != nil {
 		return nil, err
 	}
-	ecdheKey := uConn.HandshakeState.State13.EcdheKey
+	keyShareKeys := uConn.HandshakeState.State13.KeyShareKeys
+	if keyShareKeys == nil {
+		return nil, E.New("nil KeyShareKeys")
+	}
+	ecdheKey := keyShareKeys.Ecdhe
 	if ecdheKey == nil {
-		return nil, E.New("nil ecdhe_key")
+		return nil, E.New("nil ecdheKey")
 	}
 	authKey, err := ecdheKey.ECDH(publicKey)
 	if err != nil {
@@ -214,10 +235,6 @@ func realityClientFallback(ctx context.Context, uConn net.Conn, serverName strin
 	response.Body.Close()
 }
 
-func (e *RealityClientConfig) SetSessionIDGenerator(generator func(clientHello []byte, sessionID []byte) error) {
-	e.uClient.config.SessionIDGenerator = generator
-}
-
 func (e *RealityClientConfig) Clone() Config {
 	return &RealityClientConfig{
 		e.ctx,

common/tls/reality_server.go

@@ -1,4 +1,4 @@
-//go:build with_reality_server
+//go:build with_utls
 
 package tls
 
@@ -7,28 +7,29 @@ import (
 	"crypto/tls"
 	"encoding/base64"
 	"encoding/hex"
+	"fmt"
 	"net"
 	"time"
 
-	"github.com/sagernet/reality"
 	"github.com/sagernet/sing-box/common/dialer"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common/debug"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/ntp"
+
+	utls "github.com/metacubex/utls"
 )
 
 var _ ServerConfigCompat = (*RealityServerConfig)(nil)
 
 type RealityServerConfig struct {
-	config *reality.Config
+	config *utls.RealityConfig
 }
 
 func NewRealityServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (*RealityServerConfig, error) {
-	var tlsConfig reality.Config
+	var tlsConfig utls.RealityConfig
 
 	if options.ACME != nil && len(options.ACME.Domain) > 0 {
 		return nil, E.New("acme is unavailable in reality")
@@ -74,6 +75,11 @@ func NewRealityServer(ctx context.Context, logger log.Logger, options option.Inb
 	}
 
 	tlsConfig.SessionTicketsDisabled = true
+	tlsConfig.Log = func(format string, v ...any) {
+		if logger != nil {
+			logger.Trace(fmt.Sprintf(format, v...))
+		}
+	}
 	tlsConfig.Type = N.NetworkTCP
 	tlsConfig.Dest = options.Reality.Handshake.ServerOptions.Build().String()
 
@@ -113,10 +119,6 @@ func NewRealityServer(ctx context.Context, logger log.Logger, options option.Inb
 		return handshakeDialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
 	}
 
-	if debug.Enabled {
-		tlsConfig.Show = true
-	}
-
 	return &RealityServerConfig{&tlsConfig}, nil
 }
 
@@ -157,7 +159,7 @@ func (c *RealityServerConfig) Server(conn net.Conn) (Conn, error) {
 }
 
 func (c *RealityServerConfig) ServerHandshake(ctx context.Context, conn net.Conn) (Conn, error) {
-	tlsConn, err := reality.Server(ctx, conn, c.config)
+	tlsConn, err := utls.RealityServer(ctx, conn, c.config)
 	if err != nil {
 		return nil, err
 	}
@@ -173,7 +175,7 @@ func (c *RealityServerConfig) Clone() Config {
 var _ Conn = (*realityConnWrapper)(nil)
 
 type realityConnWrapper struct {
-	*reality.Conn
+	*utls.Conn
 }
 
 func (c *realityConnWrapper) ConnectionState() ConnectionState {

common/tls/reality_stub.go

@@ -1,15 +1,5 @@
-//go:build !with_reality_server
+//go:build with_reality_server
 
 package tls
 
-import (
-	"context"
-
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-)
-
-func NewRealityServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
-	return nil, E.New(`reality server is not included in this build, rebuild with -tags with_reality_server`)
-}
+var _ int = "The separate `with_reality_server` build tag has been merged into `with_utls` and is no longer needed, please update your build configuration."

common/tls/server.go

@@ -16,13 +16,10 @@ func NewServer(ctx context.Context, logger log.Logger, options option.InboundTLS
 	if !options.Enabled {
 		return nil, nil
 	}
-	if options.ECH != nil && options.ECH.Enabled {
-		return NewECHServer(ctx, logger, options)
-	} else if options.Reality != nil && options.Reality.Enabled {
+	if options.Reality != nil && options.Reality.Enabled {
 		return NewRealityServer(ctx, logger, options)
-	} else {
-		return NewSTDServer(ctx, logger, options)
 	}
+	return NewSTDServer(ctx, logger, options)
 }
 
 func ServerHandshake(ctx context.Context, conn net.Conn, config ServerConfig) (Conn, error) {

common/tls/std_client.go

@@ -127,5 +127,8 @@ func NewSTDClient(ctx context.Context, serverAddress string, options option.Outb
 		}
 		tlsConfig.RootCAs = certPool
 	}
+	if options.ECH != nil && options.ECH.Enabled {
+		return parseECHClientConfig(ctx, options, &tlsConfig)
+	}
 	return &STDClientConfig{&tlsConfig}, nil
 }

common/tls/std_server.go

@@ -27,6 +27,7 @@ type STDServerConfig struct {
 	key             []byte
 	certificatePath string
 	keyPath         string
+	echKeyPath      string
 	watcher         *fswatch.Watcher
 }
 
@@ -95,6 +96,9 @@ func (c *STDServerConfig) startWatcher() error {
 	if c.keyPath != "" {
 		watchPath = append(watchPath, c.keyPath)
 	}
+	if c.echKeyPath != "" {
+		watchPath = append(watchPath, c.echKeyPath)
+	}
 	watcher, err := fswatch.NewWatcher(fswatch.Options{
 		Path: watchPath,
 		Callback: func(path string) {
@@ -116,25 +120,33 @@ func (c *STDServerConfig) startWatcher() error {
 }
 
 func (c *STDServerConfig) certificateUpdated(path string) error {
-	if path == c.certificatePath {
-		certificate, err := os.ReadFile(c.certificatePath)
-		if err != nil {
-			return E.Cause(err, "reload certificate from ", c.certificatePath)
+	if path == c.certificatePath || path == c.keyPath {
+		if path == c.certificatePath {
+			certificate, err := os.ReadFile(c.certificatePath)
+			if err != nil {
+				return E.Cause(err, "reload certificate from ", c.certificatePath)
+			}
+			c.certificate = certificate
+		} else if path == c.keyPath {
+			key, err := os.ReadFile(c.keyPath)
+			if err != nil {
+				return E.Cause(err, "reload key from ", c.keyPath)
+			}
+			c.key = key
 		}
-		c.certificate = certificate
-	} else if path == c.keyPath {
-		key, err := os.ReadFile(c.keyPath)
+		keyPair, err := tls.X509KeyPair(c.certificate, c.key)
 		if err != nil {
-			return E.Cause(err, "reload key from ", c.keyPath)
+			return E.Cause(err, "reload key pair")
 		}
-		c.key = key
+		c.config.Certificates = []tls.Certificate{keyPair}
+		c.logger.Info("reloaded TLS certificate")
+	} else if path == c.echKeyPath {
+		err := reloadECHKeys(c.echKeyPath, c.config)
+		if err != nil {
+			return err
+		}
+		c.logger.Info("reloaded ECH keys")
 	}
-	keyPair, err := tls.X509KeyPair(c.certificate, c.key)
-	if err != nil {
-		return E.Cause(err, "reload key pair")
-	}
-	c.config.Certificates = []tls.Certificate{keyPair}
-	c.logger.Info("reloaded TLS certificate")
 	return nil
 }
 
@@ -243,6 +255,13 @@ func NewSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 			tlsConfig.Certificates = []tls.Certificate{keyPair}
 		}
 	}
+	var echKeyPath string
+	if options.ECH != nil && options.ECH.Enabled {
+		err = parseECHServerConfig(ctx, options, tlsConfig, &echKeyPath)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return &STDServerConfig{
 		config:          tlsConfig,
 		logger:          logger,
@@ -251,5 +270,6 @@ func NewSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 		key:             key,
 		certificatePath: options.CertificatePath,
 		keyPath:         options.KeyPath,
+		echKeyPath:      echKeyPath,
 	}, nil
 }

common/tls/utls_client.go

@@ -16,8 +16,8 @@ import (
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/ntp"
-	utls "github.com/sagernet/utls"
 
+	utls "github.com/metacubex/utls"
 	"golang.org/x/net/http2"
 )
 

common/tls/utls_stub.go

@@ -5,6 +5,7 @@ package tls
 import (
 	"context"
 
+	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 )
@@ -14,5 +15,9 @@ func NewUTLSClient(ctx context.Context, serverAddress string, options option.Out
 }
 
 func NewRealityClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return nil, E.New(`uTLS, which is required by reality client is not included in this build, rebuild with -tags with_utls`)
+	return nil, E.New(`uTLS, which is required by reality is not included in this build, rebuild with -tags with_utls`)
+}
+
+func NewRealityServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
+	return nil, E.New(`uTLS, which is required by reality is not included in this build, rebuild with -tags with_utls`)
 }

common/tlsfragment/conn.go

@@ -1,7 +1,9 @@
 package tf
 
 import (
+	"bytes"
 	"context"
+	"encoding/binary"
 	"math/rand"
 	"net"
 	"strings"
@@ -17,17 +19,19 @@ type Conn struct {
 	tcpConn            *net.TCPConn
 	ctx                context.Context
 	firstPacketWritten bool
+	splitRecord        bool
 	fallbackDelay      time.Duration
 }
 
-func NewConn(conn net.Conn, ctx context.Context, fallbackDelay time.Duration) (*Conn, error) {
+func NewConn(conn net.Conn, ctx context.Context, splitRecord bool, fallbackDelay time.Duration) *Conn {
 	tcpConn, _ := N.UnwrapReader(conn).(*net.TCPConn)
 	return &Conn{
 		Conn:          conn,
 		tcpConn:       tcpConn,
 		ctx:           ctx,
+		splitRecord:   splitRecord,
 		fallbackDelay: fallbackDelay,
-	}, nil
+	}
 }
 
 func (c *Conn) Write(b []byte) (n int, err error) {
@@ -37,10 +41,12 @@ func (c *Conn) Write(b []byte) (n int, err error) {
 		}()
 		serverName := indexTLSServerName(b)
 		if serverName != nil {
-			if c.tcpConn != nil {
-				err = c.tcpConn.SetNoDelay(true)
-				if err != nil {
-					return
+			if !c.splitRecord {
+				if c.tcpConn != nil {
+					err = c.tcpConn.SetNoDelay(true)
+					if err != nil {
+						return
+					}
 				}
 			}
 			splits := strings.Split(serverName.ServerName, ".")
@@ -61,16 +67,25 @@ func (c *Conn) Write(b []byte) (n int, err error) {
 					currentIndex++
 				}
 			}
+			var buffer bytes.Buffer
 			for i := 0; i <= len(splitIndexes); i++ {
 				var payload []byte
 				if i == 0 {
 					payload = b[:splitIndexes[i]]
+					if c.splitRecord {
+						payload = payload[recordLayerHeaderLen:]
+					}
 				} else if i == len(splitIndexes) {
 					payload = b[splitIndexes[i-1]:]
 				} else {
 					payload = b[splitIndexes[i-1]:splitIndexes[i]]
 				}
-				if c.tcpConn != nil && i != len(splitIndexes) {
+				if c.splitRecord {
+					payloadLen := uint16(len(payload))
+					buffer.Write(b[:3])
+					binary.Write(&buffer, binary.BigEndian, payloadLen)
+					buffer.Write(payload)
+				} else if c.tcpConn != nil && i != len(splitIndexes) {
 					err = writeAndWaitAck(c.ctx, c.tcpConn, payload, c.fallbackDelay)
 					if err != nil {
 						return
@@ -82,11 +97,18 @@ func (c *Conn) Write(b []byte) (n int, err error) {
 					}
 				}
 			}
-			if c.tcpConn != nil {
-				err = c.tcpConn.SetNoDelay(false)
+			if c.splitRecord {
+				_, err = c.tcpConn.Write(buffer.Bytes())
 				if err != nil {
 					return
 				}
+			} else {
+				if c.tcpConn != nil {
+					err = c.tcpConn.SetNoDelay(false)
+					if err != nil {
+						return
+					}
+				}
 			}
 			return len(b), nil
 		}

common/tlsfragment/conn_test.go

@@ -0,0 +1,32 @@
+package tf_test
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+	"testing"
+
+	tf "github.com/sagernet/sing-box/common/tlsfragment"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestTLSFragment(t *testing.T) {
+	t.Parallel()
+	tcpConn, err := net.Dial("tcp", "1.1.1.1:443")
+	require.NoError(t, err)
+	tlsConn := tls.Client(tf.NewConn(tcpConn, context.Background(), false, 0), &tls.Config{
+		ServerName: "www.cloudflare.com",
+	})
+	require.NoError(t, tlsConn.Handshake())
+}
+
+func TestTLSRecordFragment(t *testing.T) {
+	t.Parallel()
+	tcpConn, err := net.Dial("tcp", "1.1.1.1:443")
+	require.NoError(t, err)
+	tlsConn := tls.Client(tf.NewConn(tcpConn, context.Background(), true, 0), &tls.Config{
+		ServerName: "www.cloudflare.com",
+	})
+	require.NoError(t, tlsConn.Handshake())
+}

constant/dns.go

@@ -15,18 +15,19 @@ const (
 )
 
 const (
-	DNSTypeLegacy     = "legacy"
-	DNSTypeUDP        = "udp"
-	DNSTypeTCP        = "tcp"
-	DNSTypeTLS        = "tls"
-	DNSTypeHTTPS      = "https"
-	DNSTypeQUIC       = "quic"
-	DNSTypeHTTP3      = "h3"
-	DNSTypeHosts      = "hosts"
-	DNSTypeLocal      = "local"
-	DNSTypePreDefined = "predefined"
-	DNSTypeFakeIP     = "fakeip"
-	DNSTypeDHCP       = "dhcp"
+	DNSTypeLegacy      = "legacy"
+	DNSTypeLegacyRcode = "legacy_rcode"
+	DNSTypeUDP         = "udp"
+	DNSTypeTCP         = "tcp"
+	DNSTypeTLS         = "tls"
+	DNSTypeHTTPS       = "https"
+	DNSTypeQUIC        = "quic"
+	DNSTypeHTTP3       = "h3"
+	DNSTypeLocal       = "local"
+	DNSTypeHosts       = "hosts"
+	DNSTypeFakeIP      = "fakeip"
+	DNSTypeDHCP        = "dhcp"
+	DNSTypeTailscale   = "tailscale"
 )
 
 const (

constant/proxy.go

@@ -19,10 +19,12 @@ const (
 	TypeTor          = "tor"
 	TypeSSH          = "ssh"
 	TypeShadowTLS    = "shadowtls"
+	TypeAnyTLS       = "anytls"
 	TypeShadowsocksR = "shadowsocksr"
 	TypeVLESS        = "vless"
 	TypeTUIC         = "tuic"
 	TypeHysteria2    = "hysteria2"
+	TypeTailscale    = "tailscale"
 )
 
 const (
@@ -76,6 +78,8 @@ func ProxyDisplayName(proxyType string) string {
 		return "TUIC"
 	case TypeHysteria2:
 		return "Hysteria2"
+	case TypeAnyTLS:
+		return "AnyTLS"
 	case TypeSelector:
 		return "Selector"
 	case TypeURLTest:

constant/rule.go

@@ -33,6 +33,7 @@ const (
 	RuleActionTypeHijackDNS    = "hijack-dns"
 	RuleActionTypeSniff        = "sniff"
 	RuleActionTypeResolve      = "resolve"
+	RuleActionTypePredefined   = "predefined"
 )
 
 const (

dns/client.go

@@ -17,7 +17,7 @@ import (
 	"github.com/sagernet/sing/contrab/freelru"
 	"github.com/sagernet/sing/contrab/maphash"
 
-	"github.com/miekg/dns"
+	dns "github.com/miekg/dns"
 )
 
 var (
@@ -105,7 +105,7 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 	}
 	question := message.Question[0]
 	if options.ClientSubnet.IsValid() {
-		message = SetClientSubnet(message, options.ClientSubnet, true)
+		message = SetClientSubnet(message, options.ClientSubnet)
 	}
 	isSimpleRequest := len(message.Question) == 1 &&
 		len(message.Ns) == 0 &&
@@ -232,10 +232,20 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 			record.Header().Ttl = timeToLive
 		}
 	}
-	response.Id = messageId
 	if !disableCache {
 		c.storeCache(transport, question, response, timeToLive)
 	}
+	response.Id = messageId
+	requestEDNSOpt := message.IsEdns0()
+	responseEDNSOpt := response.IsEdns0()
+	if responseEDNSOpt != nil && (requestEDNSOpt == nil || requestEDNSOpt.Version() < responseEDNSOpt.Version()) {
+		response.Extra = common.Filter(response.Extra, func(it dns.RR) bool {
+			return it.Header().Rrtype != dns.TypeOPT
+		})
+		if requestEDNSOpt != nil {
+			response.SetEdns0(responseEDNSOpt.UDPSize(), responseEDNSOpt.Do())
+		}
+	}
 	logExchangedResponse(c.logger, ctx, response, timeToLive)
 	return response, err
 }
@@ -483,8 +493,8 @@ func (c *Client) loadResponse(question dns.Question, transport adapter.DNSTransp
 }
 
 func MessageToAddresses(response *dns.Msg) ([]netip.Addr, error) {
-	if response.Rcode != dns.RcodeSuccess && response.Rcode != dns.RcodeNameError {
-		return nil, RCodeError(response.Rcode)
+	if response.Rcode != dns.RcodeSuccess {
+		return nil, RcodeError(response.Rcode)
 	}
 	addresses := make([]netip.Addr, 0, len(response.Answer))
 	for _, rawAnswer := range response.Answer {
@@ -508,10 +518,10 @@ func wrapError(err error) error {
 	switch dnsErr := err.(type) {
 	case *net.DNSError:
 		if dnsErr.IsNotFound {
-			return RCodeNameError
+			return RcodeNameError
 		}
 	case *net.AddrError:
-		return RCodeNameError
+		return RcodeNameError
 	}
 	return err
 }
@@ -537,7 +547,7 @@ func FixedResponse(id uint16, question dns.Question, addresses []netip.Addr, tim
 		Question: []dns.Question{question},
 	}
 	for _, address := range addresses {
-		if address.Is4() {
+		if address.Is4() && question.Qtype == dns.TypeA {
 			response.Answer = append(response.Answer, &dns.A{
 				Hdr: dns.RR_Header{
 					Name:   question.Name,
@@ -547,7 +557,7 @@ func FixedResponse(id uint16, question dns.Question, addresses []netip.Addr, tim
 				},
 				A: address.AsSlice(),
 			})
-		} else {
+		} else if address.Is6() && question.Qtype == dns.TypeAAAA {
 			response.Answer = append(response.Answer, &dns.AAAA{
 				Hdr: dns.RR_Header{
 					Name:   question.Name,
@@ -561,3 +571,73 @@ func FixedResponse(id uint16, question dns.Question, addresses []netip.Addr, tim
 	}
 	return &response
 }
+
+func FixedResponseCNAME(id uint16, question dns.Question, record string, timeToLive uint32) *dns.Msg {
+	response := dns.Msg{
+		MsgHdr: dns.MsgHdr{
+			Id:       id,
+			Rcode:    dns.RcodeSuccess,
+			Response: true,
+		},
+		Question: []dns.Question{question},
+		Answer: []dns.RR{
+			&dns.CNAME{
+				Hdr: dns.RR_Header{
+					Name:   question.Name,
+					Rrtype: dns.TypeCNAME,
+					Class:  dns.ClassINET,
+					Ttl:    timeToLive,
+				},
+				Target: record,
+			},
+		},
+	}
+	return &response
+}
+
+func FixedResponseTXT(id uint16, question dns.Question, records []string, timeToLive uint32) *dns.Msg {
+	response := dns.Msg{
+		MsgHdr: dns.MsgHdr{
+			Id:       id,
+			Rcode:    dns.RcodeSuccess,
+			Response: true,
+		},
+		Question: []dns.Question{question},
+		Answer: []dns.RR{
+			&dns.TXT{
+				Hdr: dns.RR_Header{
+					Name:   question.Name,
+					Rrtype: dns.TypeA,
+					Class:  dns.ClassINET,
+					Ttl:    timeToLive,
+				},
+				Txt: records,
+			},
+		},
+	}
+	return &response
+}
+
+func FixedResponseMX(id uint16, question dns.Question, records []*net.MX, timeToLive uint32) *dns.Msg {
+	response := dns.Msg{
+		MsgHdr: dns.MsgHdr{
+			Id:       id,
+			Rcode:    dns.RcodeSuccess,
+			Response: true,
+		},
+		Question: []dns.Question{question},
+	}
+	for _, record := range records {
+		response.Answer = append(response.Answer, &dns.MX{
+			Hdr: dns.RR_Header{
+				Name:   question.Name,
+				Rrtype: dns.TypeA,
+				Class:  dns.ClassINET,
+				Ttl:    timeToLive,
+			},
+			Preference: record.Pref,
+			Mx:         record.Host,
+		})
+	}
+	return &response
+}

dns/extension_edns0_subnet.go

@@ -6,7 +6,11 @@ import (
 	"github.com/miekg/dns"
 )
 
-func SetClientSubnet(message *dns.Msg, clientSubnet netip.Prefix, override bool) *dns.Msg {
+func SetClientSubnet(message *dns.Msg, clientSubnet netip.Prefix) *dns.Msg {
+	return setClientSubnet(message, clientSubnet, true)
+}
+
+func setClientSubnet(message *dns.Msg, clientSubnet netip.Prefix, clone bool) *dns.Msg {
 	var (
 		optRecord    *dns.OPT
 		subnetOption *dns.EDNS0_SUBNET
@@ -19,9 +23,6 @@ findExists:
 				var isEDNS0Subnet bool
 				subnetOption, isEDNS0Subnet = option.(*dns.EDNS0_SUBNET)
 				if isEDNS0Subnet {
-					if !override {
-						return message
-					}
 					break findExists
 				}
 			}
@@ -37,14 +38,14 @@ findExists:
 			},
 		}
 		message.Extra = append(message.Extra, optRecord)
-	} else {
-		message = message.Copy()
+	} else if clone {
+		return setClientSubnet(message.Copy(), clientSubnet, false)
 	}
 	if subnetOption == nil {
 		subnetOption = new(dns.EDNS0_SUBNET)
+		subnetOption.Code = dns.EDNS0SUBNET
 		optRecord.Option = append(optRecord.Option, subnetOption)
 	}
-	subnetOption.Code = dns.EDNS0SUBNET
 	if clientSubnet.Addr().Is4() {
 		subnetOption.Family = 1
 	} else {

dns/rcode.go

@@ -1,33 +1,17 @@
 package dns
 
-import F "github.com/sagernet/sing/common/format"
-
-const (
-	RCodeSuccess        RCodeError = 0 // NoError
-	RCodeFormatError    RCodeError = 1 // FormErr
-	RCodeServerFailure  RCodeError = 2 // ServFail
-	RCodeNameError      RCodeError = 3 // NXDomain
-	RCodeNotImplemented RCodeError = 4 // NotImp
-	RCodeRefused        RCodeError = 5 // Refused
+import (
+	mDNS "github.com/miekg/dns"
 )
 
-type RCodeError uint16
+const (
+	RcodeFormatError RcodeError = mDNS.RcodeFormatError
+	RcodeNameError   RcodeError = mDNS.RcodeNameError
+	RcodeRefused     RcodeError = mDNS.RcodeRefused
+)
 
-func (e RCodeError) Error() string {
-	switch e {
-	case RCodeSuccess:
-		return "success"
-	case RCodeFormatError:
-		return "format error"
-	case RCodeServerFailure:
-		return "server failure"
-	case RCodeNameError:
-		return "name error"
-	case RCodeNotImplemented:
-		return "not implemented"
-	case RCodeRefused:
-		return "refused"
-	default:
-		return F.ToString("unknown error: ", uint16(e))
-	}
+type RcodeError int
+
+func (e RcodeError) Error() string {
+	return mDNS.RcodeToString[int(e)]
 }

dns/router.go

@@ -174,7 +174,6 @@ func (r *Router) matchDNS(ctx context.Context, allowFakeIP bool, ruleIndex int,
 						options.ClientSubnet = legacyTransport.LegacyClientSubnet()
 					}
 				}
-				r.logger.DebugContext(ctx, "match[", displayRuleIndex, "] => ", currentRule.Action())
 				return transport, currentRule, currentRuleIndex
 			case *R.RuleActionDNSRouteOptions:
 				if action.Strategy != C.DomainStrategyAsIS {
@@ -189,9 +188,9 @@ func (r *Router) matchDNS(ctx context.Context, allowFakeIP bool, ruleIndex int,
 				if action.ClientSubnet.IsValid() {
 					options.ClientSubnet = action.ClientSubnet
 				}
-				r.logger.DebugContext(ctx, "match[", displayRuleIndex, "] => ", currentRule.Action())
 			case *R.RuleActionReject:
-				r.logger.DebugContext(ctx, "match[", displayRuleIndex, "] => ", currentRule.Action())
+				return nil, currentRule, currentRuleIndex
+			case *R.RuleActionPredefined:
 				return nil, currentRule, currentRuleIndex
 			}
 		}
@@ -263,6 +262,8 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 						case C.RuleActionRejectMethodDrop:
 							return nil, tun.ErrDrop
 						}
+					case *R.RuleActionPredefined:
+						return action.Response(message), nil
 					}
 				}
 				var responseCheck func(responseAddrs []netip.Addr) bool
@@ -322,6 +323,9 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 		err           error
 	)
 	printResult := func() {
+		if err == nil && len(responseAddrs) == 0 {
+			err = E.New("empty result")
+		}
 		if err != nil {
 			if errors.Is(err, ErrResponseRejectedCached) {
 				r.logger.DebugContext(ctx, "response rejected for ", domain, " (cached)")
@@ -330,15 +334,15 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 			} else {
 				r.logger.ErrorContext(ctx, E.Cause(err, "lookup failed for ", domain))
 			}
-		} else if len(responseAddrs) == 0 {
-			r.logger.ErrorContext(ctx, "lookup failed for ", domain, ": empty result")
-			err = RCodeNameError
+		}
+		if err != nil {
+			err = E.Cause(err, "lookup ", domain)
 		}
 	}
 	responseAddrs, cached = r.client.LookupCache(domain, options.Strategy)
 	if cached {
 		if len(responseAddrs) == 0 {
-			return nil, RCodeNameError
+			return nil, E.New("lookup ", domain, ": empty result (cached)")
 		}
 		return responseAddrs, nil
 	}
@@ -369,7 +373,8 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 		ruleIndex = -1
 		for {
 			dnsCtx := adapter.OverrideContext(ctx)
-			transport, rule, ruleIndex = r.matchDNS(ctx, false, ruleIndex, true, &options)
+			dnsOptions := options
+			transport, rule, ruleIndex = r.matchDNS(ctx, false, ruleIndex, true, &dnsOptions)
 			if rule != nil {
 				switch action := rule.Action().(type) {
 				case *R.RuleActionReject:
@@ -379,6 +384,20 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 					case C.RuleActionRejectMethodDrop:
 						return nil, tun.ErrDrop
 					}
+				case *R.RuleActionPredefined:
+					if action.Rcode != mDNS.RcodeSuccess {
+						err = RcodeError(action.Rcode)
+					} else {
+						for _, answer := range action.Answer {
+							switch record := answer.(type) {
+							case *mDNS.A:
+								responseAddrs = append(responseAddrs, M.AddrFromIP(record.A))
+							case *mDNS.AAAA:
+								responseAddrs = append(responseAddrs, M.AddrFromIP(record.AAAA))
+							}
+						}
+					}
+					goto response
 				}
 			}
 			var responseCheck func(responseAddrs []netip.Addr) bool
@@ -388,16 +407,17 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 					return rule.MatchAddressLimit(metadata)
 				}
 			}
-			if options.Strategy == C.DomainStrategyAsIS {
-				options.Strategy = r.defaultDomainStrategy
+			if dnsOptions.Strategy == C.DomainStrategyAsIS {
+				dnsOptions.Strategy = r.defaultDomainStrategy
 			}
-			responseAddrs, err = r.client.Lookup(dnsCtx, transport, domain, options, responseCheck)
+			responseAddrs, err = r.client.Lookup(dnsCtx, transport, domain, dnsOptions, responseCheck)
 			if responseCheck == nil || err == nil {
 				break
 			}
 			printResult()
 		}
 	}
+response:
 	printResult()
 	if len(responseAddrs) > 0 {
 		r.logger.InfoContext(ctx, "lookup succeed for ", domain, ": ", strings.Join(F.MapToString(responseAddrs), " "))
@@ -432,6 +452,6 @@ func (r *Router) LookupReverseMapping(ip netip.Addr) (string, bool) {
 func (r *Router) ResetNetwork() {
 	r.ClearCache()
 	for _, transport := range r.transport.Transports() {
-		transport.Reset()
+		transport.Close()
 	}
 }

dns/transport/dhcp/dhcp.go

@@ -81,7 +81,7 @@ func (t *Transport) Start(stage adapter.StartStage) error {
 
 func (t *Transport) Close() error {
 	for _, transport := range t.transports {
-		transport.Reset()
+		transport.Close()
 	}
 	if t.interfaceCallback != nil {
 		t.networkManager.InterfaceMonitor().UnregisterCallback(t.interfaceCallback)
@@ -89,12 +89,6 @@ func (t *Transport) Close() error {
 	return nil
 }
 
-func (t *Transport) Reset() {
-	for _, transport := range t.transports {
-		transport.Reset()
-	}
-}
-
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
 	err := t.fetchServers()
 	if err != nil {
@@ -252,7 +246,7 @@ func (t *Transport) recreateServers(iface *control.Interface, serverAddrs []M.So
 		transports = append(transports, transport.NewUDPRaw(t.logger, t.TransportAdapter, serverDialer, serverAddr))
 	}
 	for _, transport := range t.transports {
-		transport.Reset()
+		transport.Close()
 	}
 	t.transports = transports
 	return nil

dns/transport/hosts/hosts.go

@@ -2,12 +2,15 @@ package hosts
 
 import (
 	"context"
+	"net/netip"
+	"os"
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/service/filemanager"
 
 	mDNS "github.com/miekg/dns"
 )
@@ -20,31 +23,49 @@ var _ adapter.DNSTransport = (*Transport)(nil)
 
 type Transport struct {
 	dns.TransportAdapter
-	files []*File
+	files      []*File
+	predefined map[string][]netip.Addr
 }
 
 func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.HostsDNSServerOptions) (adapter.DNSTransport, error) {
-	var files []*File
+	var (
+		files      []*File
+		predefined = make(map[string][]netip.Addr)
+	)
 	if len(options.Path) == 0 {
 		files = append(files, NewFile(DefaultPath))
 	} else {
 		for _, path := range options.Path {
-			files = append(files, NewFile(path))
+			files = append(files, NewFile(filemanager.BasePath(ctx, os.ExpandEnv(path))))
+		}
+	}
+	if options.Predefined != nil {
+		for _, entry := range options.Predefined.Entries() {
+			predefined[mDNS.CanonicalName(entry.Key)] = entry.Value
 		}
 	}
 	return &Transport{
 		TransportAdapter: dns.NewTransportAdapter(C.DNSTypeHosts, tag, nil),
 		files:            files,
+		predefined:       predefined,
 	}, nil
 }
 
-func (t *Transport) Reset() {
+func (t *Transport) Start(stage adapter.StartStage) error {
+	return nil
+}
+
+func (t *Transport) Close() error {
+	return nil
 }
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
 	question := message.Question[0]
-	domain := dns.FqdnToDomain(question.Name)
+	domain := mDNS.CanonicalName(question.Name)
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
+		if addresses, ok := t.predefined[domain]; ok {
+			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+		}
 		for _, file := range t.files {
 			addresses := file.Lookup(domain)
 			if len(addresses) > 0 {

dns/transport/hosts/hosts_file.go

@@ -34,7 +34,7 @@ func (f *File) Lookup(name string) []netip.Addr {
 	f.access.Lock()
 	defer f.access.Unlock()
 	f.update()
-	return f.byName[name]
+	return f.byName[dns.CanonicalName(name)]
 }
 
 func (f *File) update() {

dns/transport/hosts/hosts_test.go

@@ -11,6 +11,6 @@ import (
 
 func TestHosts(t *testing.T) {
 	t.Parallel()
-	require.Equal(t, []netip.Addr{netip.AddrFrom4([4]byte{127, 0, 0, 1}), netip.IPv6Loopback()}, hosts.NewFile("testdata/hosts").Lookup("localhost."))
-	require.NotEmpty(t, hosts.NewFile(hosts.DefaultPath).Lookup("localhost."))
+	require.Equal(t, []netip.Addr{netip.AddrFrom4([4]byte{127, 0, 0, 1}), netip.IPv6Loopback()}, hosts.NewFile("testdata/hosts").Lookup("localhost"))
+	require.NotEmpty(t, hosts.NewFile(hosts.DefaultPath).Lookup("localhost"))
 }

dns/transport/https.go

@@ -10,6 +10,7 @@ import (
 	"strconv"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/dialer"
 	"github.com/sagernet/sing-box/common/tls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
@@ -91,10 +92,13 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 443
 	}
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
+	}
 	return NewHTTPSRaw(
 		dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeHTTPS, tag, options.RemoteDNSServerOptions),
 		logger,
@@ -149,9 +153,17 @@ func NewHTTPSRaw(
 	}
 }
 
-func (t *HTTPSTransport) Reset() {
+func (t *HTTPSTransport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	return dialer.InitializeDetour(t.dialer)
+}
+
+func (t *HTTPSTransport) Close() error {
 	t.transport.CloseIdleConnections()
 	t.transport = t.transport.Clone()
+	return nil
 }
 
 func (t *HTTPSTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {

dns/transport/local/local.go

@@ -3,6 +3,7 @@ package local
 import (
 	"context"
 	"math/rand"
+	"net/netip"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -19,14 +20,11 @@ import (
 	mDNS "github.com/miekg/dns"
 )
 
-func RegisterTransport(registry *dns.TransportRegistry) {
-	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewTransport)
-}
-
 var _ adapter.DNSTransport = (*Transport)(nil)
 
 type Transport struct {
 	dns.TransportAdapter
+	ctx    context.Context
 	hosts  *hosts.File
 	dialer N.Dialer
 }
@@ -38,12 +36,18 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 	}
 	return &Transport{
 		TransportAdapter: dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options),
+		ctx:              ctx,
 		hosts:            hosts.NewFile(hosts.DefaultPath),
 		dialer:           transportDialer,
 	}, nil
 }
 
-func (t *Transport) Reset() {
+func (t *Transport) Start(stage adapter.StartStage) error {
+	return nil
+}
+
+func (t *Transport) Close() error {
+	return nil
 }
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
@@ -55,7 +59,7 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
 		}
 	}
-	systemConfig := getSystemDNSConfig()
+	systemConfig := getSystemDNSConfig(t.ctx)
 	if systemConfig.singleRequest || !(message.Question[0].Qtype == mDNS.TypeA || message.Question[0].Qtype == mDNS.TypeAAAA) {
 		return t.exchangeSingleRequest(ctx, systemConfig, message, domain)
 	} else {
@@ -87,8 +91,9 @@ func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfi
 	startRacer := func(ctx context.Context, fqdn string) {
 		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
 		if err == nil {
-			addresses, _ := dns.MessageToAddresses(response)
-			if len(addresses) == 0 {
+			var addresses []netip.Addr
+			addresses, err = dns.MessageToAddresses(response)
+			if err == nil && len(addresses) == 0 {
 				err = E.New(fqdn, ": empty result")
 			}
 		}
@@ -142,6 +147,9 @@ func (t *Transport) tryOneName(ctx context.Context, config *dnsConfig, fqdn stri
 }
 
 func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question, timeout time.Duration, useTCP, ad bool) (*mDNS.Msg, error) {
+	if server.Port == 0 {
+		server.Port = 53
+	}
 	var networks []string
 	if useTCP {
 		networks = []string{N.NetworkTCP}

dns/transport/local/local_fallback.go

@@ -0,0 +1,205 @@
+package local
+
+import (
+	"context"
+	"errors"
+	"net"
+
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/service"
+
+	mDNS "github.com/miekg/dns"
+)
+
+func RegisterTransport(registry *dns.TransportRegistry) {
+	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewFallbackTransport)
+}
+
+type FallbackTransport struct {
+	adapter.DNSTransport
+	ctx      context.Context
+	fallback bool
+	resolver net.Resolver
+}
+
+func NewFallbackTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
+	transport, err := NewTransport(ctx, logger, tag, options)
+	if err != nil {
+		return nil, err
+	}
+	return &FallbackTransport{
+		DNSTransport: transport,
+		ctx:          ctx,
+	}, nil
+}
+
+func (f *FallbackTransport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	platformInterface := service.FromContext[platform.Interface](f.ctx)
+	if platformInterface == nil {
+		return nil
+	}
+	inboundManager := service.FromContext[adapter.InboundManager](f.ctx)
+	for _, inbound := range inboundManager.Inbounds() {
+		if inbound.Type() == C.TypeTun {
+			// platform tun hijacks DNS, so we can only use cgo resolver here
+			f.fallback = true
+			break
+		}
+	}
+	return nil
+}
+
+func (f *FallbackTransport) Close() error {
+	return nil
+}
+
+func (f *FallbackTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	if !f.fallback {
+		return f.DNSTransport.Exchange(ctx, message)
+	}
+	question := message.Question[0]
+	domain := dns.FqdnToDomain(question.Name)
+	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
+		var network string
+		if question.Qtype == mDNS.TypeA {
+			network = "ip4"
+		} else {
+			network = "ip6"
+		}
+		addresses, err := f.resolver.LookupNetIP(ctx, network, domain)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+	} else if question.Qtype == mDNS.TypeNS {
+		records, err := f.resolver.LookupNS(ctx, domain)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		response := &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+		}
+		for _, record := range records {
+			response.Answer = append(response.Answer, &mDNS.NS{
+				Hdr: mDNS.RR_Header{
+					Name:   question.Name,
+					Rrtype: mDNS.TypeNS,
+					Class:  mDNS.ClassINET,
+					Ttl:    C.DefaultDNSTTL,
+				},
+				Ns: record.Host,
+			})
+		}
+		return response, nil
+	} else if question.Qtype == mDNS.TypeCNAME {
+		cname, err := f.resolver.LookupCNAME(ctx, domain)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+			Answer: []mDNS.RR{
+				&mDNS.CNAME{
+					Hdr: mDNS.RR_Header{
+						Name:   question.Name,
+						Rrtype: mDNS.TypeCNAME,
+						Class:  mDNS.ClassINET,
+						Ttl:    C.DefaultDNSTTL,
+					},
+					Target: cname,
+				},
+			},
+		}, nil
+	} else if question.Qtype == mDNS.TypeTXT {
+		records, err := f.resolver.LookupTXT(ctx, domain)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+			Answer: []mDNS.RR{
+				&mDNS.TXT{
+					Hdr: mDNS.RR_Header{
+						Name:   question.Name,
+						Rrtype: mDNS.TypeCNAME,
+						Class:  mDNS.ClassINET,
+						Ttl:    C.DefaultDNSTTL,
+					},
+					Txt: records,
+				},
+			},
+		}, nil
+	} else if question.Qtype == mDNS.TypeMX {
+		records, err := f.resolver.LookupMX(ctx, domain)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		response := &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+		}
+		for _, record := range records {
+			response.Answer = append(response.Answer, &mDNS.MX{
+				Hdr: mDNS.RR_Header{
+					Name:   question.Name,
+					Rrtype: mDNS.TypeA,
+					Class:  mDNS.ClassINET,
+					Ttl:    C.DefaultDNSTTL,
+				},
+				Preference: record.Pref,
+				Mx:         record.Host,
+			})
+		}
+		return response, nil
+	} else {
+		return nil, E.New("only A, AAAA, NS, CNAME, TXT, MX queries are supported on current platform when using TUN, please switch to a fixed DNS server.")
+	}
+}

dns/transport/local/resolv.go

@@ -1,6 +1,7 @@
 package local
 
 import (
+	"context"
 	"os"
 	"runtime"
 	"strings"
@@ -23,19 +24,21 @@ type resolverConfig struct {
 
 var resolvConf resolverConfig
 
-func getSystemDNSConfig() *dnsConfig {
-	resolvConf.tryUpdate("/etc/resolv.conf")
+func getSystemDNSConfig(ctx context.Context) *dnsConfig {
+	resolvConf.tryUpdate(ctx, "/etc/resolv.conf")
 	return resolvConf.dnsConfig.Load()
 }
 
-func (conf *resolverConfig) init() {
-	conf.dnsConfig.Store(dnsReadConfig("/etc/resolv.conf"))
+func (conf *resolverConfig) init(ctx context.Context) {
+	conf.dnsConfig.Store(dnsReadConfig(ctx, "/etc/resolv.conf"))
 	conf.lastChecked = time.Now()
 	conf.ch = make(chan struct{}, 1)
 }
 
-func (conf *resolverConfig) tryUpdate(name string) {
-	conf.initOnce.Do(conf.init)
+func (conf *resolverConfig) tryUpdate(ctx context.Context, name string) {
+	conf.initOnce.Do(func() {
+		conf.init(ctx)
+	})
 
 	if conf.dnsConfig.Load().noReload {
 		return
@@ -59,7 +62,7 @@ func (conf *resolverConfig) tryUpdate(name string) {
 			return
 		}
 	}
-	dnsConf := dnsReadConfig(name)
+	dnsConf := dnsReadConfig(ctx, name)
 	conf.dnsConfig.Store(dnsConf)
 }
 

dns/transport/local/resolv_darwin_cgo.go

@@ -0,0 +1,54 @@
+//go:build darwin && cgo
+
+package local
+
+/*
+#include <stdlib.h>
+#include <stdio.h>
+#include <resolv.h>
+#include <arpa/inet.h>
+*/
+import "C"
+
+import (
+	"context"
+	"time"
+
+	E "github.com/sagernet/sing/common/exceptions"
+
+	"github.com/miekg/dns"
+)
+
+func dnsReadConfig(_ context.Context, _ string) *dnsConfig {
+	if C.res_init() != 0 {
+		return &dnsConfig{
+			servers:  defaultNS,
+			search:   dnsDefaultSearch(),
+			ndots:    1,
+			timeout:  5 * time.Second,
+			attempts: 2,
+			err:      E.New("libresolv initialization failed"),
+		}
+	}
+	conf := &dnsConfig{
+		ndots:    1,
+		timeout:  5 * time.Second,
+		attempts: int(C._res.retry),
+	}
+	for i := 0; i < int(C._res.nscount); i++ {
+		ns := C._res.nsaddr_list[i]
+		addr := C.inet_ntoa(ns.sin_addr)
+		if addr == nil {
+			continue
+		}
+		conf.servers = append(conf.servers, C.GoString(addr))
+	}
+	for i := 0; ; i++ {
+		search := C._res.dnsrch[i]
+		if search == nil {
+			break
+		}
+		conf.search = append(conf.search, dns.Fqdn(C.GoString(search)))
+	}
+	return conf
+}

dns/transport/local/resolv_default.go

@@ -0,0 +1,23 @@
+package local
+
+import (
+	"os"
+	"strings"
+	_ "unsafe"
+
+	"github.com/miekg/dns"
+)
+
+//go:linkname defaultNS net.defaultNS
+var defaultNS []string
+
+func dnsDefaultSearch() []string {
+	hn, err := os.Hostname()
+	if err != nil {
+		return nil
+	}
+	if i := strings.IndexRune(hn, '.'); i >= 0 && i < len(hn)-1 {
+		return []string{dns.Fqdn(hn[i+1:])}
+	}
+	return nil
+}

dns/transport/local/resolv_unix.go

@@ -1,18 +1,20 @@
-//go:build !windows
+//go:build !windows && !(darwin && cgo)
 
 package local
 
 import (
 	"bufio"
+	"context"
 	"net"
 	"net/netip"
 	"os"
 	"strings"
 	"time"
-	_ "unsafe"
+
+	"github.com/miekg/dns"
 )
 
-func dnsReadConfig(name string) *dnsConfig {
+func dnsReadConfig(_ context.Context, name string) *dnsConfig {
 	conf := &dnsConfig{
 		ndots:    1,
 		timeout:  5 * time.Second,
@@ -69,13 +71,13 @@ func dnsReadConfig(name string) *dnsConfig {
 			}
 		case "domain":
 			if len(f) > 1 {
-				conf.search = []string{ensureRooted(f[1])}
+				conf.search = []string{dns.Fqdn(f[1])}
 			}
 
 		case "search":
 			conf.search = make([]string, 0, len(f)-1)
 			for i := 1; i < len(f); i++ {
-				name := ensureRooted(f[i])
+				name := dns.Fqdn(f[i])
 				if name == "." {
 					continue
 				}
@@ -137,27 +139,6 @@ func dnsReadConfig(name string) *dnsConfig {
 	return conf
 }
 
-//go:linkname defaultNS net.defaultNS
-var defaultNS []string
-
-func dnsDefaultSearch() []string {
-	hn, err := os.Hostname()
-	if err != nil {
-		return nil
-	}
-	if i := strings.IndexRune(hn, '.'); i >= 0 && i < len(hn)-1 {
-		return []string{ensureRooted(hn[i+1:])}
-	}
-	return nil
-}
-
-func ensureRooted(s string) string {
-	if len(s) > 0 && s[len(s)-1] == '.' {
-		return s
-	}
-	return s + "."
-}
-
 const big = 0xFFFFFF
 
 func dtoi(s string) (n int, i int, ok bool) {

dns/transport/local/resolv_windows.go

@@ -1,6 +1,7 @@
 package local
 
 import (
+	"context"
 	"net"
 	"net/netip"
 	"os"
@@ -8,10 +9,13 @@ import (
 	"time"
 	"unsafe"
 
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/service"
+
 	"golang.org/x/sys/windows"
 )
 
-func dnsReadConfig(_ string) *dnsConfig {
+func dnsReadConfig(ctx context.Context, _ string) *dnsConfig {
 	conf := &dnsConfig{
 		ndots:    1,
 		timeout:  5 * time.Second,
@@ -22,35 +26,35 @@ func dnsReadConfig(_ string) *dnsConfig {
 			conf.servers = defaultNS
 		}
 	}()
-	aas, err := adapterAddresses()
+	addresses, err := adapterAddresses()
 	if err != nil {
 		return nil
 	}
-
-	for _, aa := range aas {
-		// Only take interfaces whose OperStatus is IfOperStatusUp(0x01) into DNS configs.
-		if aa.OperStatus != windows.IfOperStatusUp {
+	var dnsAddresses []struct {
+		ifName string
+		netip.Addr
+	}
+	for _, address := range addresses {
+		if address.OperStatus != windows.IfOperStatusUp {
 			continue
 		}
-
-		// Only take interfaces which have at least one gateway
-		if aa.FirstGatewayAddress == nil {
+		if address.IfType == windows.IF_TYPE_TUNNEL {
 			continue
 		}
-
-		for dns := aa.FirstDnsServerAddress; dns != nil; dns = dns.Next {
-			sa, err := dns.Address.Sockaddr.Sockaddr()
+		if address.FirstGatewayAddress == nil {
+			continue
+		}
+		for dnsServerAddress := address.FirstDnsServerAddress; dnsServerAddress != nil; dnsServerAddress = dnsServerAddress.Next {
+			rawSockaddr, err := dnsServerAddress.Address.Sockaddr.Sockaddr()
 			if err != nil {
 				continue
 			}
-			var ip netip.Addr
-			switch sa := sa.(type) {
+			var dnsServerAddr netip.Addr
+			switch sockaddr := rawSockaddr.(type) {
 			case *syscall.SockaddrInet4:
-				ip = netip.AddrFrom4([4]byte{sa.Addr[0], sa.Addr[1], sa.Addr[2], sa.Addr[3]})
+				dnsServerAddr = netip.AddrFrom4(sockaddr.Addr)
 			case *syscall.SockaddrInet6:
-				var addr16 [16]byte
-				copy(addr16[:], sa.Addr[:])
-				if addr16[0] == 0xfe && addr16[1] == 0xc0 {
+				if sockaddr.Addr[0] == 0xfe && sockaddr.Addr[1] == 0xc0 {
 					// fec0/10 IPv6 addresses are site local anycast DNS
 					// addresses Microsoft sets by default if no other
 					// IPv6 DNS address is set. Site local anycast is
@@ -58,20 +62,30 @@ func dnsReadConfig(_ string) *dnsConfig {
 					// https://datatracker.ietf.org/doc/html/rfc3879
 					continue
 				}
-				ip = netip.AddrFrom16(addr16)
+				dnsServerAddr = netip.AddrFrom16(sockaddr.Addr)
 			default:
 				// Unexpected type.
 				continue
 			}
-			conf.servers = append(conf.servers, net.JoinHostPort(ip.String(), "53"))
+			dnsAddresses = append(dnsAddresses, struct {
+				ifName string
+				netip.Addr
+			}{ifName: windows.UTF16PtrToString(address.FriendlyName), Addr: dnsServerAddr})
 		}
 	}
+	var myInterface string
+	if networkManager := service.FromContext[adapter.NetworkManager](ctx); networkManager != nil {
+		myInterface = networkManager.InterfaceMonitor().MyInterface()
+	}
+	for _, address := range dnsAddresses {
+		if address.ifName == myInterface {
+			continue
+		}
+		conf.servers = append(conf.servers, net.JoinHostPort(address.String(), "53"))
+	}
 	return conf
 }
 
-//go:linkname defaultNS net.defaultNS
-var defaultNS []string
-
 func adapterAddresses() ([]*windows.IpAdapterAddresses, error) {
 	var b []byte
 	l := uint32(15000) // recommended initial size

dns/transport/predefined.go

@@ -1,83 +0,0 @@
-package transport
-
-import (
-	"context"
-
-	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
-
-	mDNS "github.com/miekg/dns"
-)
-
-var _ adapter.DNSTransport = (*PredefinedTransport)(nil)
-
-func RegisterPredefined(registry *dns.TransportRegistry) {
-	dns.RegisterTransport[option.PredefinedDNSServerOptions](registry, C.DNSTypePreDefined, NewPredefined)
-}
-
-type PredefinedTransport struct {
-	dns.TransportAdapter
-	responses []*predefinedResponse
-}
-
-type predefinedResponse struct {
-	questions []mDNS.Question
-	answer    *mDNS.Msg
-}
-
-func NewPredefined(ctx context.Context, logger log.ContextLogger, tag string, options option.PredefinedDNSServerOptions) (adapter.DNSTransport, error) {
-	var responses []*predefinedResponse
-	for _, response := range options.Responses {
-		questions, msg, err := response.Build()
-		if err != nil {
-			return nil, err
-		}
-		responses = append(responses, &predefinedResponse{
-			questions: questions,
-			answer:    msg,
-		})
-	}
-	if len(responses) == 0 {
-		return nil, E.New("empty predefined responses")
-	}
-	return &PredefinedTransport{
-		TransportAdapter: dns.NewTransportAdapter(C.DNSTypePreDefined, tag, nil),
-		responses:        responses,
-	}, nil
-}
-
-func (t *PredefinedTransport) Reset() {
-}
-
-func (t *PredefinedTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	for _, response := range t.responses {
-		for _, question := range response.questions {
-			if func() bool {
-				if question.Name == "" && question.Qtype == mDNS.TypeNone {
-					return true
-				} else if question.Name == "" {
-					return common.Any(message.Question, func(it mDNS.Question) bool {
-						return it.Qtype == question.Qtype
-					})
-				} else if question.Qtype == mDNS.TypeNone {
-					return common.Any(message.Question, func(it mDNS.Question) bool {
-						return it.Name == question.Name
-					})
-				} else {
-					return common.Contains(message.Question, question)
-				}
-			}() {
-				copyAnswer := *response.answer
-				copyAnswer.Id = message.Id
-				copyAnswer.Question = message.Question
-				return &copyAnswer, nil
-			}
-		}
-	}
-	return nil, dns.RCodeNameError
-}

dns/transport/quic/http3.go

@@ -23,7 +23,6 @@ import (
 	"github.com/sagernet/sing/common/bufio"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
-	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	sHTTP "github.com/sagernet/sing/protocol/http"
 
@@ -89,10 +88,13 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 443
 	}
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
+	}
 	return &HTTP3Transport{
 		TransportAdapter: dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeHTTP3, tag, options.RemoteDNSServerOptions),
 		logger:           logger,
@@ -101,8 +103,7 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 		headers:          headers,
 		transport: &http3.Transport{
 			Dial: func(ctx context.Context, addr string, tlsCfg *tls.STDConfig, cfg *quic.Config) (quic.EarlyConnection, error) {
-				destinationAddr := M.ParseSocksaddr(addr)
-				conn, dialErr := transportDialer.DialContext(ctx, N.NetworkUDP, destinationAddr)
+				conn, dialErr := transportDialer.DialContext(ctx, N.NetworkUDP, serverAddr)
 				if dialErr != nil {
 					return nil, dialErr
 				}
@@ -113,8 +114,12 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 	}, nil
 }
 
-func (t *HTTP3Transport) Reset() {
-	t.transport.Close()
+func (t *HTTP3Transport) Start(stage adapter.StartStage) error {
+	return nil
+}
+
+func (t *HTTP3Transport) Close() error {
+	return t.transport.Close()
 }
 
 func (t *HTTP3Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {

dns/transport/quic/quic.go

@@ -16,6 +16,7 @@ import (
 	sQUIC "github.com/sagernet/sing-quic"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/bufio"
+	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
@@ -54,10 +55,13 @@ func NewQUIC(ctx context.Context, logger log.ContextLogger, tag string, options
 	if len(tlsConfig.NextProtos()) == 0 {
 		tlsConfig.SetNextProtos([]string{"doq"})
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 853
 	}
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
+	}
 	return &Transport{
 		TransportAdapter: dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeQUIC, tag, options.RemoteDNSServerOptions),
 		ctx:              ctx,
@@ -68,13 +72,18 @@ func NewQUIC(ctx context.Context, logger log.ContextLogger, tag string, options
 	}, nil
 }
 
-func (t *Transport) Reset() {
+func (t *Transport) Start(stage adapter.StartStage) error {
+	return nil
+}
+
+func (t *Transport) Close() error {
 	t.access.Lock()
 	defer t.access.Unlock()
 	connection := t.connection
 	if connection != nil {
 		connection.CloseWithError(0, "")
 	}
+	return nil
 }
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
@@ -135,12 +144,12 @@ func (t *Transport) exchange(ctx context.Context, message *mDNS.Msg, conn quic.C
 	if err != nil {
 		return nil, err
 	}
-	defer stream.Close()
-	defer stream.CancelRead(0)
 	err = transport.WriteMessage(stream, 0, message)
 	if err != nil {
+		stream.Close()
 		return nil, err
 	}
+	stream.Close()
 	return transport.ReadMessage(stream)
 }
 

dns/transport/tcp.go

@@ -6,12 +6,14 @@ import (
 	"io"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/dialer"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
@@ -35,10 +37,13 @@ func NewTCP(ctx context.Context, logger log.ContextLogger, tag string, options o
 	if err != nil {
 		return nil, err
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 53
 	}
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
+	}
 	return &TCPTransport{
 		TransportAdapter: dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeTCP, tag, options),
 		dialer:           transportDialer,
@@ -46,7 +51,15 @@ func NewTCP(ctx context.Context, logger log.ContextLogger, tag string, options o
 	}, nil
 }
 
-func (t *TCPTransport) Reset() {
+func (t *TCPTransport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	return dialer.InitializeDetour(t.dialer)
+}
+
+func (t *TCPTransport) Close() error {
+	return nil
 }
 
 func (t *TCPTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {

dns/transport/tls.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/dialer"
 	"github.com/sagernet/sing-box/common/tls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
@@ -52,10 +53,13 @@ func NewTLS(ctx context.Context, logger log.ContextLogger, tag string, options o
 	if err != nil {
 		return nil, err
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 853
 	}
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
+	}
 	return &TLSTransport{
 		TransportAdapter: dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeTLS, tag, options.RemoteDNSServerOptions),
 		logger:           logger,
@@ -65,13 +69,21 @@ func NewTLS(ctx context.Context, logger log.ContextLogger, tag string, options o
 	}, nil
 }
 
-func (t *TLSTransport) Reset() {
+func (t *TLSTransport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	return dialer.InitializeDetour(t.dialer)
+}
+
+func (t *TLSTransport) Close() error {
 	t.access.Lock()
 	defer t.access.Unlock()
 	for connection := t.connections.Front(); connection != nil; connection = connection.Next() {
 		connection.Value.Close()
 	}
 	t.connections.Init()
+	return nil
 }
 
 func (t *TLSTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {

dns/transport/udp.go

@@ -7,11 +7,13 @@ import (
 	"sync"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/dialer"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
@@ -42,10 +44,13 @@ func NewUDP(ctx context.Context, logger log.ContextLogger, tag string, options o
 	if err != nil {
 		return nil, err
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 53
 	}
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
+	}
 	return NewUDPRaw(logger, dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeUDP, tag, options), transportDialer, serverAddr), nil
 }
 
@@ -64,11 +69,19 @@ func NewUDPRaw(logger logger.ContextLogger, adapter dns.TransportAdapter, dialer
 	}
 }
 
-func (t *UDPTransport) Reset() {
+func (t *UDPTransport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	return dialer.InitializeDetour(t.dialer)
+}
+
+func (t *UDPTransport) Close() error {
 	t.access.Lock()
 	defer t.access.Unlock()
 	close(t.done)
 	t.done = make(chan struct{})
+	return nil
 }
 
 func (t *UDPTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
@@ -108,15 +121,8 @@ func (t *UDPTransport) exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.M
 	conn.access.Unlock()
 	defer func() {
 		conn.access.Lock()
-		delete(conn.callbacks, messageId)
+		delete(conn.callbacks, exMessage.Id)
 		conn.access.Unlock()
-		callback.access.Lock()
-		select {
-		case <-callback.done:
-		default:
-			close(callback.done)
-		}
-		callback.access.Unlock()
 	}()
 	rawMessage, err := exMessage.PackBuffer(buffer.FreeBytes())
 	if err != nil {
@@ -210,8 +216,8 @@ type dnsConnection struct {
 
 func (c *dnsConnection) Close(err error) {
 	c.closeOnce.Do(func() {
-		close(c.done)
 		c.err = err
+		close(c.done)
 	})
 	c.Conn.Close()
 }

dns/transport_dialer.go

@@ -20,9 +20,10 @@ func NewLocalDialer(ctx context.Context, options option.LocalDNSServerOptions) (
 		return dialer.NewDefaultOutbound(ctx), nil
 	} else {
 		return dialer.NewWithOptions(dialer.Options{
-			Context:        ctx,
-			Options:        options.DialerOptions,
-			DirectResolver: true,
+			Context:         ctx,
+			Options:         options.DialerOptions,
+			DirectResolver:  true,
+			LegacyDNSDialer: options.Legacy,
 		})
 	}
 }
@@ -43,10 +44,11 @@ func NewRemoteDialer(ctx context.Context, options option.RemoteDNSServerOptions)
 		return transportDialer, nil
 	} else {
 		return dialer.NewWithOptions(dialer.Options{
-			Context:        ctx,
-			Options:        options.DialerOptions,
-			RemoteIsDomain: options.ServerIsDomain(),
-			DirectResolver: true,
+			Context:         ctx,
+			Options:         options.DialerOptions,
+			RemoteIsDomain:  options.ServerIsDomain(),
+			DirectResolver:  true,
+			LegacyDNSDialer: options.Legacy,
 		})
 	}
 }

dns/transport_manager.go

@@ -56,12 +56,15 @@ func (m *TransportManager) Start(stage adapter.StartStage) error {
 	}
 	m.started = true
 	m.stage = stage
-	outbounds := m.transports
+	transports := m.transports
 	m.access.Unlock()
 	if stage == adapter.StartStateStart {
+		if m.defaultTag != "" && m.defaultTransport == nil {
+			return E.New("default DNS server not found: ", m.defaultTag)
+		}
 		return m.startTransports(m.transports)
 	} else {
-		for _, outbound := range outbounds {
+		for _, outbound := range transports {
 			err := adapter.LegacyStart(outbound, stage)
 			if err != nil {
 				return E.Cause(err, stage, " dns/", outbound.Type(), "[", outbound.Tag(), "]")
@@ -225,7 +228,7 @@ func (m *TransportManager) Remove(tag string) error {
 		}
 	}
 	if started {
-		transport.Reset()
+		transport.Close()
 	}
 	return nil
 }

docs/changelog.md

@@ -2,6 +2,31 @@
 icon: material/alert-decagram
 ---
 
+#### 1.12.0-beta.13
+
+* Add TLS record fragment route options **1**
+* Add missing `accept_routes` option for Tailscale **2**
+* Fixes and improvements
+
+**1**:
+
+See [Route Action](/configuration/route/rule_action/#tls_record_fragment).
+
+**2**:
+
+See [Tailscale](/configuration/endpoint/tailscale/#accept_routes).
+
+#### 1.12.0-beta.10
+
+* Add control options for listeners **1**
+* Fixes and improvements
+
+**1**:
+
+You can now set `bind_interface`, `routing_mark` and `reuse_addr` in Listen Fields.
+
+See [Listen Fields](/configuration/shared/listen/).
+
 ### 1.11.10
 
 * Undeprecate the `block` outbound **1**
@@ -15,6 +40,11 @@ we decided to temporarily undeprecate the `block` outbound until a replacement i
 _We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we
 violated the rules (TestFlight users are not affected)._
 
+#### 1.12.0-beta.9
+
+* Update quic-go to v0.51.0
+* Fixes and improvements
+
 ### 1.11.9
 
 * Fixes and improvements
@@ -22,6 +52,10 @@ violated the rules (TestFlight users are not affected)._
 _We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we
 violated the rules (TestFlight users are not affected)._
 
+#### 1.12.0-beta.5
+
+* Fixes and improvements
+
 ### 1.11.8
 
 * Improve `auto_redirect` **1**
@@ -35,6 +69,10 @@ see [Tun](/configuration/inbound/tun/#auto_redirect).
 _We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we
 violated the rules (TestFlight users are not affected)._
 
+#### 1.12.0-beta.3
+
+* Fixes and improvements
+
 ### 1.11.7
 
 * Fixes and improvements
@@ -42,6 +80,15 @@ violated the rules (TestFlight users are not affected)._
 _We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we
 violated the rules (TestFlight users are not affected)._
 
+#### 1.12.0-beta.1
+
+* Fixes and improvements
+
+**1**:
+
+Now `auto_redirect` fixes compatibility issues between tun and Docker bridge networks,
+see [Tun](/configuration/inbound/tun/#auto_redirect).
+
 ### 1.11.6
 
 * Fixes and improvements
@@ -49,6 +96,40 @@ violated the rules (TestFlight users are not affected)._
 _We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we
 violated the rules (TestFlight users are not affected)._
 
+#### 1.12.0-alpha.19
+
+* Update gVisor to 20250319.0
+* Fixes and improvements
+
+#### 1.12.0-alpha.18
+
+* Add wildcard SNI support for ShadowTLS inbound **1**
+* Fixes and improvements
+
+**1**:
+
+See [ShadowTLS](/configuration/inbound/shadowtls/#wildcard_sni).
+
+#### 1.12.0-alpha.17
+
+* Add NTP sniffer **1**
+* Fixes and improvements
+
+**1**:
+
+See [Protocol Sniff](/configuration/route/sniff/).
+
+#### 1.12.0-alpha.16
+
+* Update `domain_resolver` behavior **1**
+* Fixes and improvements
+
+**1**:
+
+`route.default_domain_resolver` or `outbound.domain_resolver` is now optional when only one DNS server is configured.
+
+See [Dial Fields](/configuration/shared/dial/#domain_resolver).
+
 ### 1.11.5
 
 * Fixes and improvements
@@ -56,10 +137,71 @@ violated the rules (TestFlight users are not affected)._
 _We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we
 violated the rules (TestFlight users are not affected)._
 
+#### 1.12.0-alpha.13
+
+* Move `predefined` DNS server to DNS rule action **1**
+* Fixes and improvements
+
+**1**:
+
+See [DNS Rule Action](/configuration/dns/rule_action/#predefined).
+
 ### 1.11.4
 
 * Fixes and improvements
 
+#### 1.12.0-alpha.11
+
+* Fixes and improvements
+
+#### 1.12.0-alpha.10
+
+* Add AnyTLS protocol **1**
+* Improve `resolve` route action **2**
+* Migrate to stdlib ECH implementation **3**
+* Fixes and improvements
+
+**1**:
+
+The new AnyTLS protocol claims to mitigate TLS proxy traffic characteristics and comes with a new multiplexing scheme.
+
+See [AnyTLS Inbound](/configuration/inbound/anytls/) and [AnyTLS Outbound](/configuration/outbound/anytls/).
+
+**2**:
+
+`resolve` route action now accepts `disable_cache` and other options like in DNS route actions, see [Route Action](/configuration/route/rule_action).
+
+**3**:
+
+See [TLS](/configuration/shared/tls).
+
+The build tag `with_ech` is no longer needed and has been removed.
+
+#### 1.12.0-alpha.7
+
+* Add Tailscale DNS server **1**
+* Fixes and improvements
+
+**1**:
+
+See [Tailscale](/configuration/dns/server/tailscale/).
+
+#### 1.12.0-alpha.6
+
+* Add Tailscale endpoint **1**
+* Drop support for go1.22 **2**
+* Fixes and improvements
+
+**1**:
+
+See [Tailscale](/configuration/endpoint/tailscale/).
+
+**2**:
+
+Due to maintenance difficulties, sing-box 1.12.0 requires at least Go 1.23 to compile.
+
+For Windows 7 users, legacy binaries now continue to compile with Go 1.23 and patches from [MetaCubeX/go](https://github.com/MetaCubeX/go).
+
 ### 1.11.3
 
 * Fixes and improvements
@@ -67,10 +209,69 @@ violated the rules (TestFlight users are not affected)._
 _This version overwrites 1.11.2, as incorrect binaries were released due to a bug in the continuous integration
 process._
 
+#### 1.12.0-alpha.5
+
+* Fixes and improvements
+
 ### 1.11.1
 
 * Fixes and improvements
 
+#### 1.12.0-alpha.2
+
+* Update quic-go to v0.49.0
+* Fixes and improvements
+
+#### 1.12.0-alpha.1
+
+* Refactor DNS servers **1**
+* Add domain resolver options**2**
+* Add TLS fragment route options **3**
+* Add certificate options **4**
+
+**1**:
+
+DNS servers are refactored for better performance and scalability.
+
+See [DNS server](/configuration/dns/server/).
+
+For migration, see [Migrate to new DNS server formats](/migration/#migrate-to-new-dns-servers).
+
+Compatibility for old formats will be removed in sing-box 1.14.0.
+
+**2**:
+
+Legacy `outbound` DNS rules are deprecated
+and can be replaced by the new `domain_resolver` option.
+
+See [Dial Fields](/configuration/shared/dial/#domain_resolver) and
+[Route](/configuration/route/#default_domain_resolver).
+
+For migration,
+see [Migrate outbound DNS rule items to domain resolver](/migration/#migrate-outbound-dns-rule-items-to-domain-resolver).
+
+**3**:
+
+The new TLS fragment route options allow you to fragment TLS handshakes to bypass firewalls.
+
+This feature is intended to circumvent simple firewalls based on **plaintext packet matching**, and should not be used
+to circumvent real censorship.
+
+Since it is not designed for performance, it should not be applied to all connections, but only to server names that are
+known to be blocked.
+
+See [Route Action](/configuration/route/rule_action/#tls_fragment).
+
+**4**:
+
+New certificate options allow you to manage the default list of trusted X509 CA certificates.
+
+For the system certificate list, fixed Go not reading Android trusted certificates correctly.
+
+You can also use the Mozilla Included List instead, or add trusted certificates yourself.
+
+See [Certificate](/configuration/certificate/).
+
 ### 1.11.0
 
 Important changes since 1.10:

docs/clients/privacy.md

@@ -9,6 +9,10 @@ and the data generated by the software is always on your device.
 
 ## Android
 
+The broad package (App) visibility (QUERY_ALL_PACKAGES) permission
+is used to provide per-application proxy features for VPN,
+sing-box will not collect your app list.
+
 If your configuration contains `wifi_ssid` or `wifi_bssid` routing rules,
 sing-box uses the location permission in the background
 to get information about the connected Wi-Fi network to make them work.

docs/configuration/dns/rule.md

@@ -4,6 +4,7 @@ icon: material/alert-decagram
 
 !!! quote "Changes in sing-box 1.12.0"
 
+    :material-plus: [ip_accept_any](#ip_accept_any)  
     :material-delete-clock: [outbound](#outbound)
 
 !!! quote "Changes in sing-box 1.11.0"
@@ -77,15 +78,6 @@ icon: material/alert-decagram
         "domain_regex": [
           "^stun\\..+"
         ],
-        "geosite": [
-          "cn"
-        ],
-        "source_geoip": [
-          "private"
-        ],
-        "geoip": [
-          "cn"
-        ],
         "source_ip_cidr": [
           "10.0.0.0/24",
           "192.168.0.1"
@@ -96,6 +88,7 @@ icon: material/alert-decagram
           "192.168.0.1"
         ],
         "ip_is_private": false,
+        "ip_accept_any": false,
         "source_port": [
           12345
         ],
@@ -147,8 +140,6 @@ icon: material/alert-decagram
           "geoip-cn",
           "geosite-cn"
         ],
-        // deprecated
-        "rule_set_ipcidr_match_source": false,
         "rule_set_ip_cidr_match_source": false,
         "rule_set_ip_cidr_accept_empty": false,
         "invert": false,
@@ -156,7 +147,20 @@ icon: material/alert-decagram
           "direct"
         ],
         "action": "route",
-        "server": "local"
+        "server": "local",
+
+        // Deprecated
+        
+        "rule_set_ipcidr_match_source": false,
+        "geosite": [
+          "cn"
+        ],
+        "source_geoip": [
+          "private"
+        ],
+        "geoip": [
+          "cn"
+        ]
       },
       {
         "type": "logical",
@@ -451,7 +455,9 @@ Only takes effect for address requests (A/AAAA/HTTPS). When the query results do
 
 #### geoip
 
-!!! question "Since sing-box 1.9.0"
+!!! failure "Removed in sing-box 1.12.0"
+
+    GeoIP is deprecated in sing-box 1.8.0 and removed in sing-box 1.12.0, check [Migration](/migration/#migrate-geoip-to-rule-sets).
 
 Match GeoIP with query response.
 
@@ -473,6 +479,12 @@ Match private IP with query response.
 
 Make `ip_cidr` rules in rule-sets accept empty query response.
 
+#### ip_accept_any
+
+!!! question "Since sing-box 1.12.0"
+
+Match any IP with query response.
+
 ### Logical Fields
 
 #### type

docs/configuration/dns/rule.zh.md

@@ -4,6 +4,7 @@ icon: material/alert-decagram
 
 !!! quote "sing-box 1.12.0 中的更改"
 
+    :material-plus: [ip_accept_any](#ip_accept_any)  
     :material-delete-clock: [outbound](#outbound)
 
 !!! quote "sing-box 1.11.0 中的更改"
@@ -77,15 +78,6 @@ icon: material/alert-decagram
         "domain_regex": [
           "^stun\\..+"
         ],
-        "geosite": [
-          "cn"
-        ],
-        "source_geoip": [
-          "private"
-        ],
-        "geoip": [
-          "cn"
-        ],
         "source_ip_cidr": [
           "10.0.0.0/24",
           "192.168.0.1"
@@ -96,6 +88,7 @@ icon: material/alert-decagram
           "192.168.0.1"
         ],
         "ip_is_private": false,
+        "ip_accept_any": false,
         "source_port": [
           12345
         ],
@@ -147,8 +140,6 @@ icon: material/alert-decagram
           "geoip-cn",
           "geosite-cn"
         ],
-        // 已弃用
-        "rule_set_ipcidr_match_source": false,
         "rule_set_ip_cidr_match_source": false,
         "rule_set_ip_cidr_accept_empty": false,
         "invert": false,
@@ -156,7 +147,19 @@ icon: material/alert-decagram
           "direct"
         ],
         "action": "route",
-        "server": "local"
+        "server": "local",
+
+        // 已弃用
+        "rule_set_ipcidr_match_source": false,
+        "geosite": [
+          "cn"
+        ],
+        "source_geoip": [
+          "private"
+        ],
+        "geoip": [
+          "cn"
+        ]
       },
       {
         "type": "logical",
@@ -232,17 +235,17 @@ DNS 查询类型。值可以为整数或者类型名称字符串。
 
 #### geosite
 
-!!! failure "已在 sing-box 1.8.0 废弃"
+!!! failure "已在 sing-box 1.12.0 中被移除"
 
-    Geosite 已废弃且可能在不久的将来移除，参阅 [迁移指南](/zh/migration/#geosite)。
+    GeoSite 已在 sing-box 1.8.0 废弃且在 sing-box 1.12.0 中被移除，参阅 [迁移指南](/zh/migration/#geosite)。
 
 匹配 Geosite。
 
 #### source_geoip
 
-!!! failure "已在 sing-box 1.8.0 废弃"
+!!! failure "已在 sing-box 1.12.0 中被移除"
 
-    GeoIP 已废弃且可能在不久的将来移除，参阅 [迁移指南](/zh/migration/#geoip)。
+    GeoIP 已在 sing-box 1.8.0 废弃且在 sing-box 1.12.0 中被移除，参阅 [迁移指南](/zh/migration/#geoip)。
 
 匹配源 GeoIP。
 
@@ -451,7 +454,10 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 #### geoip
 
-!!! question "自 sing-box 1.9.0 起"
+!!! failure "已在 sing-box 1.12.0 中被移除"
+
+    GeoIP 已在 sing-box 1.8.0 废弃且在 sing-box 1.12.0 中被移除，参阅 [迁移指南](/zh/migration/#geoip)。
+
 
 与查询响应匹配 GeoIP。
 
@@ -467,6 +473,12 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 与查询响应匹配非公开 IP。
 
+#### ip_accept_any
+
+!!! question "自 sing-box 1.12.0 起"
+
+匹配任意 IP。
+
 #### rule_set_ip_cidr_accept_empty
 
 !!! question "自 sing-box 1.10.0 起"

docs/configuration/dns/rule_action.md

@@ -4,7 +4,8 @@ icon: material/new-box
 
 !!! quote "Changes in sing-box 1.12.0"
 
-    :material-plus: [strategy](#strategy)
+    :material-plus: [strategy](#strategy)  
+    :material-plus: [predefined](#predefined)
 
 !!! question "Since sing-box 1.11.0"
 
@@ -16,7 +17,7 @@ icon: material/new-box
   "server": "",
   "strategy": "",
   "disable_cache": false,
-  "rewrite_ttl": 0,
+  "rewrite_ttl": null,
   "client_subnet": null
 }
 ```
@@ -31,6 +32,8 @@ Tag of target server.
 
 #### strategy
 
+!!! question "Since sing-box 1.12.0"
+
 Set domain strategy for this query.
 
 One of `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`.
@@ -49,7 +52,7 @@ Append a `edns0-subnet` OPT extra record with the specified IP prefix to every q
 
 If value is an IP address instead of prefix, `/32` or `/128` will be appended automatically.
 
-Will overrides `dns.client_subnet` and `servers.[].client_subnet`.
+Will overrides `dns.client_subnet`.
 
 ### route-options
 
@@ -69,7 +72,7 @@ Will overrides `dns.client_subnet` and `servers.[].client_subnet`.
 ```json
 {
   "action": "reject",
-  "method": "default", // default
+  "method": "",
   "no_drop": false
 }
 ```
@@ -81,8 +84,61 @@ Will overrides `dns.client_subnet` and `servers.[].client_subnet`.
 - `default`: Reply with NXDOMAIN.
 - `drop`: Drop the request.
 
+`default` will be used by default.
+
 #### no_drop
 
 If not enabled, `method` will be temporarily overwritten to `drop` after 50 triggers in 30s.
 
 Not available when `method` is set to drop.
+
+### predefined
+
+!!! question "Since sing-box 1.12.0"
+
+```json
+{
+  "action": "predefined",
+  "rcode": "",
+  "answer": [],
+  "ns": [],
+  "extra": []
+}
+```
+
+`predefined` responds with predefined DNS records.
+
+#### rcode
+
+The response code.
+
+| Value      | Value in the legacy rcode server | Description     |
+|------------|----------------------------------|-----------------|
+| `NOERROR`  | `success`                        | Ok              |
+| `FORMERR`  | `format_error`                   | Bad request     |
+| `SERVFAIL` | `server_failure`                 | Server failure  |
+| `NXDOMAIN` | `name_error`                     | Not found       |
+| `NOTIMP`   | `not_implemented`                | Not implemented |
+| `REFUSED`  | `refused`                        | Refused         |
+
+`NOERROR` will be used by default.
+
+#### answer
+
+List of text DNS record to respond as answers.
+
+Examples:
+
+| Record Type | Example                       |
+|-------------|-------------------------------|
+| `A`         | `localhost. IN A 127.0.0.1`   |
+| `AAAA`      | `localhost. IN AAAA ::1`      |
+| `TXT`       | `localhost. IN TXT \"Hello\"` |
+
+#### ns
+
+List of text DNS record to respond as name servers.
+
+#### extra
+
+List of text DNS record to respond as extra records.

docs/configuration/dns/rule_action.zh.md

@@ -4,7 +4,8 @@ icon: material/new-box
 
 !!! quote "sing-box 1.12.0 中的更改"
 
-    :material-plus: [strategy](#strategy)
+    :material-plus: [strategy](#strategy)  
+    :material-plus: [predefined](#predefined)
 
 !!! question "自 sing-box 1.11.0 起"
 
@@ -12,12 +13,11 @@ icon: material/new-box
 
 ```json
 {
-  "action": "route",  // 默认
+  "action": "route", // 默认
   "server": "",
-
   "strategy": "",
   "disable_cache": false,
-  "rewrite_ttl": 0,
+  "rewrite_ttl": null,
   "client_subnet": null
 }
 ```
@@ -32,6 +32,8 @@ icon: material/new-box
 
 #### strategy
 
+!!! question "自 sing-box 1.12.0 起"
+
 为此查询设置域名策略。
 
 可选项：`prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`。
@@ -50,7 +52,7 @@ icon: material/new-box
 
 如果值是 IP 地址而不是前缀，则会自动附加 `/32` 或 `/128`。
 
-将覆盖 `dns.client_subnet` 与 `servers.[].client_subnet`。
+将覆盖 `dns.client_subnet`.
 
 ### route-options
 
@@ -70,7 +72,7 @@ icon: material/new-box
 ```json
 {
   "action": "reject",
-  "method": "default", // default
+  "method": "",
   "no_drop": false
 }
 ```
@@ -82,8 +84,61 @@ icon: material/new-box
 - `default`: 返回 NXDOMAIN。
 - `drop`: 丢弃请求。
 
+默认使用 `defualt`。
+
 #### no_drop
 
 如果未启用，则 30 秒内触发 50 次后，`method` 将被暂时覆盖为 `drop`。
 
 当 `method` 设为 `drop` 时不可用。
+
+### predefined
+
+!!! question "自 sing-box 1.12.0 起"
+
+```json
+{
+  "action": "predefined",
+  "rcode": "",
+  "answer": [],
+  "ns": [],
+  "extra": []
+}
+```
+
+`predefined` 以预定义的 DNS 记录响应。
+
+#### rcode
+
+响应码。
+
+| 值          | 旧 rcode DNS 服务器中的值 | 描述              |
+|------------|--------------------|-----------------|
+| `NOERROR`  | `success`          | Ok              |
+| `FORMERR`  | `format_error`     | Bad request     |
+| `SERVFAIL` | `server_failure`   | Server failure  |
+| `NXDOMAIN` | `name_error`       | Not found       |
+| `NOTIMP`   | `not_implemented`  | Not implemented |
+| `REFUSED`  | `refused`          | Refused         |
+
+默认使用 `NOERROR`。
+
+#### answer
+
+用于作为回答响应的文本 DNS 记录列表。
+
+例子:
+
+| 记录类型   | 例子                            |
+|--------|-------------------------------|
+| `A`    | `localhost. IN A 127.0.0.1`   |
+| `AAAA` | `localhost. IN AAAA ::1`      |
+| `TXT`  | `localhost. IN TXT \"Hello\"` |
+
+#### ns
+
+用于作为名称服务器响应的文本 DNS 记录列表。
+
+#### extra
+
+用于作为额外记录响应的文本 DNS 记录列表。

docs/configuration/dns/server/hosts.md

@@ -0,0 +1,96 @@
+---
+icon: material/new-box
+---
+
+!!! question "Since sing-box 1.12.0"
+
+# Hosts
+
+### Structure
+
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "type": "hosts",
+        "tag": "",
+
+        "path": [],
+        "predefined": {}
+      }
+    ]
+  }
+}
+```
+
+!!! note ""
+
+    You can ignore the JSON Array [] tag when the content is only one item
+
+### Fields
+
+#### path
+
+List of paths to hosts files.
+
+`/etc/hosts` is used by default.
+
+`C:\Windows\System32\Drivers\etc\hosts` is used by default on Windows.
+
+Example:
+
+```json
+{
+  // "path": "/etc/hosts"
+  
+  "path": [
+    "/etc/hosts",
+    "$HOME/.hosts"
+  ]
+}
+```
+
+#### predefined
+
+Predefined hosts.
+
+Example:
+
+```json
+{
+  "predefined": {
+    "www.google.com": "127.0.0.1",
+    "localhost": [
+      "127.0.0.1",
+      "::1"
+    ]
+  }
+}
+```
+
+### Examples
+
+=== "Use hosts if available"
+
+    ```json
+    {
+      "dns": {
+        "servers": [
+          {
+            ...
+          },
+          {
+            "type": "hosts",
+            "tag": "hosts"
+          }
+        ],
+        "rules": [
+          {
+            "ip_accept_any": true,
+            "server": "hosts"
+          }
+        ]
+      }
+    }
+    ```

docs/configuration/dns/server/http3.md

@@ -50,7 +50,7 @@ If domain name is used, `domain_resolver` must also be set to resolve IP address
 
 The port of the DNS server.
 
-`853` will be used by default.
+`443` will be used by default.
 
 #### path
 

docs/configuration/dns/server/https.md

@@ -50,7 +50,7 @@ If domain name is used, `domain_resolver` must also be set to resolve IP address
 
 The port of the DNS server.
 
-`853` will be used by default.
+`443` will be used by default.
 
 #### path
 

docs/configuration/dns/server/index.md

@@ -27,19 +27,20 @@ icon: material/alert-decagram
 
 The type of the DNS server.
 
-| Type            | Format                                              |
-|-----------------|-----------------------------------------------------|
-| empty (default) | [Legacy](/configuration/dns/server/legacy/)         |
-| `tcp`           | [TCP](/configuration/dns/server/tcp/)               |
-| `udp`           | [UDP](/configuration/dns/server/udp/)               |
-| `tls`           | [TLS](/configuration/dns/server/tls/)               |
-| `https`         | [HTTPS](/configuration/dns/server/https/)           |
-| `quic`          | [QUIC](/configuration/dns/server/quic/)             |
-| `h3`            | [HTTP/3](/configuration/dns/server/http3/)          |
-| `predefined`    | [Predefined](/configuration/dns/server/predefined/) |
-| `dhcp`          | [DHCP](/configuration/dns/server/dhcp/)             |
-| `fakeip`        | [Fake IP](/configuration/dns/server/fakeip/)        |
-
+| Type            | Format                    |
+|-----------------|---------------------------|
+| empty (default) | [Legacy](./legacy/)       |
+| `local`         | [Local](./local/)         |
+| `hosts`         | [Hosts](./hosts/)         |
+| `tcp`           | [TCP](./tcp/)             |
+| `udp`           | [UDP](./udp/)             |
+| `tls`           | [TLS](./tls/)             |
+| `quic`          | [QUIC](./quic/)           |
+| `https`         | [HTTPS](./https/)         |
+| `h3`            | [HTTP/3](./http3/)        |
+| `dhcp`          | [DHCP](./dhcp/)           |
+| `fakeip`        | [Fake IP](./fakeip/)      |
+| `tailscale`     | [Tailscale](./tailscale/) |
 
 #### tag
 

docs/configuration/dns/server/index.zh.md

@@ -0,0 +1,47 @@
+---
+icon: material/alert-decagram
+---
+
+!!! quote "sing-box 1.12.0 中的更改"
+
+    :material-plus: [type](#type)
+
+# DNS Server
+
+### 结构
+
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "type": "",
+        "tag": ""
+      }
+    ]
+  }
+}
+```
+
+#### type
+
+DNS 服务器的类型。
+
+| 类型              | 格式                        |
+|-----------------|---------------------------|
+| empty (default) | [Legacy](./legacy/)       |
+| `local`         | [Local](./local/)         |
+| `hosts`         | [Hosts](./hosts/)         |
+| `tcp`           | [TCP](./tcp/)             |
+| `udp`           | [UDP](./udp/)             |
+| `tls`           | [TLS](./tls/)             |
+| `quic`          | [QUIC](./quic/)           |
+| `https`         | [HTTPS](./https/)         |
+| `h3`            | [HTTP/3](./http3/)        |
+| `dhcp`          | [DHCP](./dhcp/)           |
+| `fakeip`        | [Fake IP](./fakeip/)      |
+| `tailscale`     | [Tailscale](./tailscale/) |
+
+#### tag
+
+DNS 服务器的标签。

docs/configuration/dns/server/predefined.md

@@ -1,93 +0,0 @@
----
-icon: material/new-box
----
-
-!!! question "Since sing-box 1.12.0"
-
-# Predefined
-
-### Structure
-
-```json
-{
-  "dns": {
-    "servers": [
-      {
-        "type": "predefined",
-        "tag": "",
-        "responses": []
-      }
-    ]
-  }
-}
-```
-
-### Fields
-
-#### responses
-
-==Required==
-
-List of [Response](#response-structure).
-
-### Response Structure
-
-```json
-{
-  "query": [],
-  "query_type": [],
-  "rcode": "",
-  "answer": [],
-  "ns": [],
-  "extra": []
-}
-```
-
-!!! note ""
-
-    You can ignore the JSON Array [] tag when the content is only one item
-
-### Response Fields
-
-#### query
-
-List of domain name to match.
-
-#### query_type
-
-List of query type to match.
-
-#### rcode
-
-The response code.
-
-| Value      | Value in the legacy rcode server | Description     |
-|------------|----------------------------------|-----------------|
-| `NOERROR`  | `success`                        | Ok              |
-| `FORMERR`  | `format_error`                   | Bad request     |
-| `SERVFAIL` | `server_failure`                 | Server failure  |
-| `NXDOMAIN` | `name_error`                     | Not found       |
-| `NOTIMP`   | `not_implemented`                | Not implemented |
-| `REFUSED`  | `refused`                        | Refused         |
-
-`NOERROR` will be used by default.
-
-#### answer
-
-List of text DNS record to respond as answers.
-
-Examples:
-
-| Record Type | Example                       |
-|-------------|-------------------------------|
-| `A`         | `localhost. IN A 127.0.0.1`   |
-| `AAAA`      | `localhost. IN AAAA ::1`      |
-| `TXT`       | `localhost. IN TXT \"Hello\"` |
-
-#### ns
-
-List of text DNS record to respond as name servers.
-
-#### extra
-
-List of text DNS record to respond as extra records.

docs/configuration/dns/server/tailscale.md

@@ -0,0 +1,83 @@
+---
+icon: material/new-box
+---
+
+!!! question "Since sing-box 1.12.0"
+
+# Tailscale
+
+### Structure
+
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "type": "tailscale",
+        "tag": "",
+
+        "endpoint": "ts-ep",
+        "accept_default_resolvers": false
+      }
+    ]
+  }
+}
+```
+
+### Fields
+
+#### endpoint
+
+==Required==
+
+The tag of the Tailscale endpoint.
+
+#### accept_default_resolvers
+
+Indicates whether default DNS resolvers should be accepted for fallback queries in addition to MagicDNS。
+
+if not enabled, NXDOMAIN will be returned for non-Tailscale domain queries.
+
+### Examples
+
+=== "MagicDNS only"
+
+    ```json
+    {
+      "dns": {
+        "servers": [
+          {
+            "type": "local",
+            "tag": "local"
+          },
+          {
+            "type": "tailscale",
+            "tag": "ts",
+            "endpoint": "ts-ep"
+          }
+        ],
+        "rules": [
+          {
+            "ip_accept_any": true,
+            "server": "ts"
+          }
+        ]
+      }
+    }
+    ```
+
+=== "Use as global DNS"
+
+    ```json
+    {
+      "dns": {
+        "servers": [
+          {
+            "type": "tailscale",
+            "endpoint": "ts-ep",
+            "accept_default_resolvers": true
+          }
+        ]
+      }
+    }
+    ```

docs/configuration/dns/server/udp.md

@@ -4,7 +4,7 @@ icon: material/new-box
 
 !!! question "Since sing-box 1.12.0"
 
-# TCP
+# UDP
 
 ### Structure
 

docs/configuration/endpoint/index.md

@@ -26,6 +26,7 @@ Endpoint is protocols that has both inbound and outbound behavior.
 | Type        | Format                    |
 |-------------|---------------------------|
 | `wireguard` | [WireGuard](./wireguard/) |
+| `tailscale` | [Tailscale](./tailscale/) |
 
 #### tag
 

docs/configuration/endpoint/index.zh.md

@@ -23,9 +23,10 @@ icon: material/new-box
 
 ### 字段
 
-| 类型          | 格式                        | 
+| 类型          | 格式                        |
 |-------------|---------------------------|
-| `wireguard` | [WireGuard](./wiregaurd/) | 
+| `wireguard` | [WireGuard](./wiregaurd/) |
+| `tailscale` | [Tailscale](./tailscale/) |
 
 #### tag
 

docs/configuration/endpoint/tailscale.md

@@ -0,0 +1,104 @@
+---
+icon: material/new-box
+---
+
+!!! question "Since sing-box 1.12.0"
+
+### Structure
+
+```json
+{
+  "type": "tailscale",
+  "tag": "ts-ep",
+  "state_directory": "",
+  "auth_key": "",
+  "control_url": "",
+  "ephemeral": false,
+  "hostname": "",
+  "accept_routes": false,
+  "exit_node": "",
+  "exit_node_allow_lan_access": false,
+  "advertise_routes": [],
+  "advertise_exit_node": false,
+  "udp_timeout": "5m",
+  
+  ... // Dial Fields
+}
+```
+
+### Fields
+
+#### state_directory
+
+The directory where the Tailscale state is stored.
+
+`tailscale` is used by default.
+
+Example: `$HOME/.tailscale`
+
+#### auth_key
+
+!!! note
+    
+    Auth key is not required. By default, sing-box will log the login URL (or popup a notification on graphical clients).
+
+The auth key to create the node. If the node is already created (from state previously stored), then this field is not
+used.
+
+#### control_url
+
+The coordination server URL.
+
+`https://controlplane.tailscale.com` is used by default.
+
+#### ephemeral
+
+Indicates whether the instance should register as an Ephemeral node (https://tailscale.com/s/ephemeral-nodes).
+
+#### hostname
+
+The hostname of the node.
+
+System hostname is used by default.
+
+Example: `localhost`
+
+#### accept_routes
+
+Indicates whether the node should accept routes advertised by other nodes.
+
+#### exit_node
+
+The exit node name or IP address to use.
+
+#### exit_node_allow_lan_access
+
+!!! note
+
+    When the exit node does not have a corresponding advertised route, private traffics cannot be routed to the exit node even if `exit_node_allow_lan_access is` set.
+
+Indicates whether locally accessible subnets should be routed directly or via the exit node.
+
+#### advertise_routes
+
+CIDR prefixes to advertise into the Tailscale network as reachable through the current node.
+
+Example: `["192.168.1.1/24"]`
+
+#### advertise_exit_node
+
+Indicates whether the node should advertise itself as an exit node.
+
+#### udp_timeout
+
+UDP NAT expiration time.
+
+`5m` will be used by default.
+
+### Dial Fields
+
+!!! note
+
+    Dial Fields in Tailscale endpoints only control how it connects to the control plane and have nothing to do with actual connections.
+
+See [Dial Fields](/configuration/shared/dial/) for details.

docs/configuration/endpoint/wireguard.zh.md

@@ -41,7 +41,7 @@ icon: material/new-box
 
 ### 字段
 
-#### system_interface
+#### system
 
 使用系统设备。
 

docs/configuration/inbound/anytls.md

@@ -0,0 +1,61 @@
+---
+icon: material/new-box
+---
+
+!!! question "Since sing-box 1.12.0"
+
+### Structure
+
+```json
+{
+  "type": "anytls",
+  "tag": "anytls-in",
+
+  ... // Listen Fields
+
+  "users": [
+    {
+      "name": "sekai",
+      "password": "8JCsPssfgS8tiRwiMlhARg=="
+    }
+  ],
+  "padding_scheme": [],
+  "tls": {}
+}
+```
+
+### Listen Fields
+
+See [Listen Fields](/configuration/shared/listen/) for details.
+
+### Fields
+
+#### users
+
+==Required==
+
+AnyTLS users.
+
+#### padding_scheme
+
+AnyTLS padding scheme line array.
+
+Default padding scheme:
+
+```json
+[
+  "stop=8",
+  "0=30-30",
+  "1=100-400",
+  "2=400-500,c,500-1000,c,500-1000,c,500-1000,c,500-1000",
+  "3=9-9,500-1000",
+  "4=500-1000",
+  "5=500-1000",
+  "6=500-1000",
+  "7=500-1000"
+]
+```
+
+#### tls
+
+TLS configuration, see [TLS](/configuration/shared/tls/#inbound).

docs/configuration/inbound/anytls.zh.md

@@ -0,0 +1,61 @@
+---
+icon: material/new-box
+---
+
+!!! question "自 sing-box 1.12.0 起"
+
+### 结构
+
+```json
+{
+  "type": "anytls",
+  "tag": "anytls-in",
+
+  ... // 监听字段
+
+  "users": [
+    {
+      "name": "sekai",
+      "password": "8JCsPssfgS8tiRwiMlhARg=="
+    }
+  ],
+  "padding_scheme": [],
+  "tls": {}
+}
+```
+
+### 监听字段
+
+参阅 [监听字段](/zh/configuration/shared/listen/)。
+
+### 字段
+
+#### users
+
+==必填==
+
+AnyTLS 用户。
+
+#### padding_scheme
+
+AnyTLS 填充方案行数组。
+
+默认填充方案:
+
+```json
+[
+  "stop=8",
+  "0=30-30",
+  "1=100-400",
+  "2=400-500,c,500-1000,c,500-1000,c,500-1000,c,500-1000",
+  "3=9-9,500-1000",
+  "4=500-1000",
+  "5=500-1000",
+  "6=500-1000",
+  "7=500-1000"
+]
+```
+
+#### tls
+
+TLS 配置, 参阅 [TLS](/zh/configuration/shared/tls/#inbound)。

docs/configuration/inbound/index.md

@@ -30,6 +30,7 @@
 | `tuic`        | [TUIC](./tuic/)               | :material-close: |
 | `hysteria2`   | [Hysteria2](./hysteria2/)     | :material-close: |
 | `vless`       | [VLESS](./vless/)             | TCP              |
+| `anytls`      | [AnyTLS](./anytls/)           | TCP              |
 | `tun`         | [Tun](./tun/)                 | :material-close: |
 | `redirect`    | [Redirect](./redirect/)       | :material-close: |
 | `tproxy`      | [TProxy](./tproxy/)           | :material-close: |

docs/configuration/inbound/index.zh.md

@@ -30,6 +30,7 @@
 | `tuic`        | [TUIC](./tuic/)               | :material-close: |
 | `hysteria2`   | [Hysteria2](./hysteria2/)     | :material-close: |
 | `vless`       | [VLESS](./vless/)             | TCP              |
+| `anytls`      | [AnyTLS](./anytls/)           | TCP              |
 | `tun`         | [Tun](./tun/)                 | :material-close: |
 | `redirect`    | [Redirect](./redirect/)       | :material-close: |
 | `tproxy`      | [TProxy](./tproxy/)           | :material-close: |

docs/configuration/inbound/shadowtls.md

@@ -1,3 +1,11 @@
+---
+icon: material/new-box
+---
+
+!!! quote "Changes in sing-box 1.12.0"
+
+    :material-plus: [wildcard_sni](#wildcard_sni)
+
 ### Structure
 
 ```json
@@ -29,7 +37,8 @@
       ... // Dial Fields
     }
   },
-  "strict_mode": false
+  "strict_mode": false,
+  "wildcard_sni": ""
 }
 ```
 
@@ -55,7 +64,6 @@ ShadowTLS password.
 
 Only available in the ShadowTLS protocol 2.
 
-
 #### users
 
 ShadowTLS users.
@@ -66,6 +74,8 @@ Only available in the ShadowTLS protocol 3.
 
 ==Required==
 
+When `wildcard_sni` is configured to `all`, the server address is optional.
+
 Handshake server address and [Dial Fields](/configuration/shared/dial/).
 
 #### handshake_for_server_name
@@ -79,3 +89,19 @@ Only available in the ShadowTLS protocol 2/3.
 ShadowTLS strict mode.
 
 Only available in the ShadowTLS protocol 3.
+
+#### wildcard_sni
+
+!!! question "Since sing-box 1.12.0"
+
+ShadowTLS wildcard SNI mode.
+
+Available values are:
+
+* `off`: (default) Disabled.
+* `authed`: Authenticated connections will have their destination overwritten to `(servername):443`
+* `all`: All connections will have their destination overwritten to `(servername):443`
+
+Additionally, connections matching `handshake_for_server_name` are not affected.
+
+Only available in the ShadowTLS protocol 3.

docs/configuration/inbound/shadowtls.zh.md

@@ -1,3 +1,11 @@
+---
+icon: material/new-box
+---
+
+!!! quote "sing-box 1.12.0 中的更改"
+
+    :material-plus: [wildcard_sni](#wildcard_sni)
+
 ### 结构
 
 ```json
@@ -29,7 +37,8 @@
       ... // 拨号字段
     }
   },
-  "strict_mode": false
+  "strict_mode": false,
+  "wildcard_sni": ""
 }
 ```
 
@@ -80,3 +89,19 @@ ShadowTLS 用户。
 ShadowTLS 严格模式。
 
 仅在 ShadowTLS 协议版本 3 中可用。
+
+#### wildcard_sni
+
+!!! question "自 sing-box 1.12.0 起"
+
+ShadowTLS 通配符 SNI 模式。
+
+可用值：
+
+* `off`：（默认）禁用。
+* `authed`：已认证的连接的目标将被重写为 `(servername):443`。
+* `all`：所有连接的目标将被重写为 `(servername):443`。
+
+此外，匹配 `handshake_for_server_name` 的连接不受影响。
+
+仅在 ShadowTLS 协议 3 中可用。

docs/configuration/index.md

@@ -9,6 +9,7 @@ sing-box uses JSON for configuration files.
   "log": {},
   "dns": {},
   "ntp": {},
+  "certificate": {},
   "endpoints": [],
   "inbounds": [],
   "outbounds": [],
@@ -24,6 +25,7 @@ sing-box uses JSON for configuration files.
 | `log`          | [Log](./log/)                   |
 | `dns`          | [DNS](./dns/)                   |
 | `ntp`          | [NTP](./ntp/)                   |
+| `certificate`  | [Certificate](./certificate/)   |
 | `endpoints`    | [Endpoint](./endpoint/)         |
 | `inbounds`     | [Inbound](./inbound/)           |
 | `outbounds`    | [Outbound](./outbound/)         |

docs/configuration/index.zh.md

@@ -9,6 +9,7 @@ sing-box 使用 JSON 作为配置文件格式。
   "log": {},
   "dns": {},
   "ntp": {},
+  "certificate": {},
   "endpoints": [],
   "inbounds": [],
   "outbounds": [],
@@ -24,6 +25,7 @@ sing-box 使用 JSON 作为配置文件格式。
 | `log`          | [日志](./log/)           |
 | `dns`          | [DNS](./dns/)          |
 | `ntp`          | [NTP](./ntp/)          |
+| `certificate`  | [证书](./certificate/)   |
 | `endpoints`    | [端点](./endpoint/)      |
 | `inbounds`     | [入站](./inbound/)       |
 | `outbounds`    | [出站](./outbound/)      |