Add Tailscale

.github/setup_legacy_go.sh

@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-
-VERSION="1.23.6"
-wget "https://dl.google.com/go/go${VERSION}.linux-amd64.tar.gz"
-tar -xzf "go${VERSION}.linux-amd64.tar.gz"
-mv go $HOME/go/go_legacy
-cd $HOME/go/go_legacy
-
-# modify from https://github.com/restic/restic/issues/4636#issuecomment-1896455557
-# this patch file only works on golang1.23.x
-# that means after golang1.24 release it must be changed
-# see: https://github.com/MetaCubeX/go/commits/release-branch.go1.23/
-# revert:
-# 693def151adff1af707d82d28f55dba81ceb08e1: "crypto/rand,runtime: switch RtlGenRandom for ProcessPrng"
-# 7c1157f9544922e96945196b47b95664b1e39108: "net: remove sysSocket fallback for Windows 7"
-# 48042aa09c2f878c4faa576948b07fe625c4707a: "syscall: remove Windows 7 console handle workaround"
-# a17d959debdb04cd550016a3501dd09d50cd62e7: "runtime: always use LoadLibraryEx to load system libraries"
-
-curl https://github.com/MetaCubeX/go/commit/9ac42137ef6730e8b7daca016ece831297a1d75b.diff | patch --verbose -p 1
-curl https://github.com/MetaCubeX/go/commit/21290de8a4c91408de7c2b5b68757b1e90af49dd.diff | patch --verbose -p 1
-curl https://github.com/MetaCubeX/go/commit/6a31d3fa8e47ddabc10bd97bff10d9a85f4cfb76.diff | patch --verbose -p 1
-curl https://github.com/MetaCubeX/go/commit/69e2eed6dd0f6d815ebf15797761c13f31213dd6.diff | patch --verbose -p 1

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -112,6 +112,7 @@ jobs:
           - name: darwin_amd64
             goos: darwin
             goarch: amd64
+            require_legacy_go: true
           - name: android_arm64
             goos: android
             goarch: arm64
@@ -133,29 +134,32 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: Cache legacy Go
         if: matrix.require_legacy_go
         id: cache-legacy-go
         uses: actions/cache@v4
         with:
           path: |
-            ~/go/go_legacy
-          key: go_legacy_1236
+            ~/go/go1.20.14
+          key: go120
       - name: Setup legacy Go
-        if: matrix.require_legacy_go && steps.cache-legacy-go.outputs.cache-hit != 'true'
-        run: bash .github/setup_legacy_go.sh
+        if: matrix.require_legacy_go == 'true' && steps.cache-legacy-go.outputs.cache-hit != 'true'
+        run: |-
+          wget https://dl.google.com/go/go1.20.14.linux-amd64.tar.gz
+          tar -xzf go1.20.14.linux-amd64.tar.gz
+          mv go $HOME/go/go1.20.14
       - name: Setup Android NDK
         if: matrix.goos == 'android'
         uses: nttld/setup-ndk@v1
         with:
-          ndk-version: r28
+          ndk-version: r28-beta2
           local-cache: true
       - name: Setup Goreleaser
         uses: goreleaser/goreleaser-action@v6
         with:
           distribution: goreleaser-pro
-          version: '~> v2'
+          version: latest
           install-only: true
       - name: Extract signing key
         run: |-
@@ -215,12 +219,12 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
         with:
-          ndk-version: r28
+          ndk-version: r28-beta2
       - name: Setup OpenJDK
         run: |-
           sudo apt update && sudo apt install -y openjdk-17-jdk-headless
@@ -252,16 +256,9 @@ jobs:
         with:
           path: ~/.gradle
           key: gradle-${{ hashFiles('**/*.gradle') }}
-      - name: Update version
-        if: github.event_name == 'workflow_dispatch'
-        run: |-
-          go run -v ./cmd/internal/update_android_version --ci
-      - name: Update nightly version
-        if: github.event_name != 'workflow_dispatch'
-        run: |-
-          go run -v ./cmd/internal/update_android_version --ci --nightly
       - name: Build
         run: |-
+          go run -v ./cmd/internal/update_android_version --ci
           mkdir clients/android/app/libs
           cp libbox.aar clients/android/app/libs
           cd clients/android
@@ -297,12 +294,12 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
         with:
-          ndk-version: r28
+          ndk-version: r28-beta2
       - name: Setup OpenJDK
         run: |-
           sudo apt update && sudo apt install -y openjdk-17-jdk-headless
@@ -395,7 +392,7 @@ jobs:
         if: matrix.if
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: Setup Xcode stable
         if: matrix.if && github.ref == 'refs/heads/main-next'
         run: |-
@@ -551,7 +548,7 @@ jobs:
         uses: goreleaser/goreleaser-action@v6
         with:
           distribution: goreleaser-pro
-          version: 2.5.1
+          version: latest
           install-only: true
       - name: Cache ghr
         uses: actions/cache@v4

.github/workflows/lint.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:

.github/workflows/linux.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.23
       - name: Extract signing key
         run: |-
           mkdir -p $HOME/.gnupg

.golangci.yml

@@ -21,16 +21,18 @@ linters-settings:
       - -SA1003
 
 run:
-  go: "1.24"
+  go: "1.23"
   build-tags:
     - with_gvisor
     - with_quic
     - with_dhcp
     - with_wireguard
+    - with_ech
     - with_utls
     - with_reality_server
     - with_acme
     - with_clash_api
+    - badlinkname
 
 issues:
   exclude-dirs:

.goreleaser.fury.yaml

@@ -9,16 +9,17 @@ builds:
       - -X github.com/sagernet/sing-box/constant.Version={{ .Version }}
       - -s
       - -buildid=
+      - -checklinkname=0
     tags:
       - with_gvisor
       - 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

@@ -11,19 +11,19 @@ builds:
       - -X github.com/sagernet/sing-box/constant.Version={{ .Version }}
       - -s
       - -buildid=
+      - -checklinkname=0
     tags:
       - with_gvisor
       - 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
@@ -50,19 +50,18 @@ builds:
       - with_reality_server
       - with_acme
       - with_clash_api
-      - with_tailscale
     env:
       - CGO_ENABLED=0
-      - GOROOT={{ .Env.GOPATH }}/go_legacy
-    tool: "{{ .Env.GOPATH }}/go_legacy/bin/go"
+      - GOROOT={{ .Env.GOPATH }}/go1.20.14
+    gobinary: "{{ .Env.GOPATH }}/go1.20.14/bin/go"
     targets:
       - windows_amd64_v1
       - windows_386
+      - darwin_amd64_v1
   - id: android
     <<: *template
     env:
       - CGO_ENABLED=1
-      - GOTOOLCHAIN=local
     overrides:
       - goos: android
         goarch: arm
@@ -97,12 +96,10 @@ archives:
     builds:
       - main
       - android
-    formats:
-      - tar.gz
+    format: tar.gz
     format_overrides:
       - goos: windows
-        formats:
-          - zip
+        format: zip
     wrap_in_directory: true
     files:
       - LICENSE
@@ -126,8 +123,8 @@ nfpms:
       - deb
       - rpm
       - archlinux
-    #      - apk
-    #      - ipk
+#      - apk
+#      - ipk
     priority: extra
     contents:
       - src: release/config/config.json

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.24-alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.23-alpine AS builder
 LABEL maintainer="nekohasekai <contact-git@sekai.icu>"
 COPY . /go/src/github.com/sagernet/sing-box
 WORKDIR /go/src/github.com/sagernet/sing-box
@@ -13,9 +13,9 @@ 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_utls,with_reality_server,with_acme,with_clash_api" \
+        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_ech,with_utls,with_reality_server,with_acme,with_clash_api" \
         -o /go/bin/sing-box \
-        -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid=" \
+        -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid= -checklinkname=0" \
         ./cmd/sing-box
 FROM --platform=$TARGETPLATFORM alpine AS dist
 LABEL maintainer="nekohasekai <contact-git@sekai.icu>"

Makefile

@@ -1,15 +1,16 @@
 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_GO123 = with_tailscale
-TAGS ?= $(TAGS_GO120),$(TAGS_GO123)
-TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_utls,with_reality_server
+TAGS_GO121 = with_ech
+TAGS_GO123 = with_tailscale,badlinkname
+TAGS ?= $(TAGS_GO118),$(TAGS_GO120),$(TAGS_GO121),$(TAGS_GO123)
+TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_ech,with_utls,with_reality_server
 
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
 VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run ./cmd/internal/read_tag)
 
-PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
+PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid= -checklinkname=0"
 MAIN_PARAMS = $(PARAMS) -tags $(TAGS)
 MAIN = ./cmd/sing-box
 PREFIX ?= $(shell go env GOPATH)
@@ -17,17 +18,14 @@ PREFIX ?= $(shell go env GOPATH)
 .PHONY: test release docs build
 
 build:
-	export GOTOOLCHAIN=local && \
 	go build $(MAIN_PARAMS) $(MAIN)
 
 ci_build_go120:
-	export GOTOOLCHAIN=local && \
-	go build $(PARAMS) $(MAIN) && \
+	go build $(PARAMS) $(MAIN)
 	go build $(PARAMS) -tags "$(TAGS_GO120)" $(MAIN)
 
 ci_build:
-	export GOTOOLCHAIN=local && \
-	go build $(PARAMS) $(MAIN) && \
+	go build $(PARAMS) $(MAIN)
 	go build $(MAIN_PARAMS) $(MAIN)
 
 generate_completions:
@@ -64,9 +62,6 @@ proto_install:
 	go install -v google.golang.org/protobuf/cmd/protoc-gen-go@latest
 	go install -v google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
 
-update_certificates:
-	go run ./cmd/internal/update_certificates
-
 release:
 	go run ./cmd/internal/build goreleaser release --clean --skip publish
 	mkdir dist/release

adapter/certificate.go

@@ -1,21 +0,0 @@
-package adapter
-
-import (
-	"context"
-	"crypto/x509"
-
-	"github.com/sagernet/sing/service"
-)
-
-type CertificateStore interface {
-	LifecycleService
-	Pool() *x509.CertPool
-}
-
-func RootPoolFromContext(ctx context.Context) *x509.CertPool {
-	store := service.FromContext[CertificateStore](ctx)
-	if store == nil {
-		return nil
-	}
-	return store.Pool()
-}

adapter/experimental.go

@@ -6,6 +6,7 @@ import (
 	"encoding/binary"
 	"time"
 
+	"github.com/sagernet/sing-box/common/urltest"
 	"github.com/sagernet/sing/common/varbin"
 )
 
@@ -14,20 +15,7 @@ type ClashServer interface {
 	ConnectionTracker
 	Mode() string
 	ModeList() []string
-	HistoryStorage() URLTestHistoryStorage
-}
-
-type URLTestHistory struct {
-	Time  time.Time `json:"time"`
-	Delay uint16    `json:"delay"`
-}
-
-type URLTestHistoryStorage interface {
-	SetHook(hook chan<- struct{})
-	LoadURLTestHistory(tag string) *URLTestHistory
-	DeleteURLTestHistory(tag string)
-	StoreURLTestHistory(tag string, history *URLTestHistory)
-	Close() error
+	HistoryStorage() *urltest.HistoryStorage
 }
 
 type V2RayServer interface {
@@ -50,17 +38,17 @@ type CacheFile interface {
 	StoreSelected(group string, selected string) error
 	LoadGroupExpand(group string) (isExpand bool, loaded bool)
 	StoreGroupExpand(group string, expand bool) error
-	LoadRuleSet(tag string) *SavedBinary
-	SaveRuleSet(tag string, set *SavedBinary) error
+	LoadRuleSet(tag string) *SavedRuleSet
+	SaveRuleSet(tag string, set *SavedRuleSet) error
 }
 
-type SavedBinary struct {
+type SavedRuleSet struct {
 	Content     []byte
 	LastUpdated time.Time
 	LastEtag    string
 }
 
-func (s *SavedBinary) MarshalBinary() ([]byte, error) {
+func (s *SavedRuleSet) MarshalBinary() ([]byte, error) {
 	var buffer bytes.Buffer
 	err := binary.Write(&buffer, binary.BigEndian, uint8(1))
 	if err != nil {
@@ -81,7 +69,7 @@ func (s *SavedBinary) MarshalBinary() ([]byte, error) {
 	return buffer.Bytes(), nil
 }
 
-func (s *SavedBinary) UnmarshalBinary(data []byte) error {
+func (s *SavedRuleSet) UnmarshalBinary(data []byte) error {
 	reader := bytes.NewReader(data)
 	var version uint8
 	err := binary.Read(reader, binary.BigEndian, &version)

adapter/inbound.go

@@ -71,8 +71,6 @@ type InboundContext struct {
 	UDPDisableDomainUnmapping bool
 	UDPConnect                bool
 	UDPTimeout                time.Duration
-	TLSFragment               bool
-	TLSFragmentFallbackDelay  time.Duration
 
 	NetworkStrategy     *C.NetworkStrategy
 	NetworkType         []C.InterfaceType

adapter/network.go

@@ -25,18 +25,15 @@ type NetworkManager interface {
 	PackageManager() tun.PackageManager
 	WIFIState() WIFIState
 	ResetNetwork()
-	UpdateWIFIState()
 }
 
 type NetworkOptions struct {
-	BindInterface        string
-	RoutingMark          uint32
-	DomainResolver       string
-	DomainResolveOptions DNSQueryOptions
-	NetworkStrategy      *C.NetworkStrategy
-	NetworkType          []C.InterfaceType
-	FallbackNetworkType  []C.InterfaceType
-	FallbackDelay        time.Duration
+	NetworkStrategy     *C.NetworkStrategy
+	NetworkType         []C.InterfaceType
+	FallbackNetworkType []C.InterfaceType
+	FallbackDelay       time.Duration
+	BindInterface       string
+	RoutingMark         uint32
 }
 
 type InterfaceUpdateListener interface {

adapter/outbound/manager.go

@@ -246,6 +246,8 @@ 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)
@@ -254,8 +256,6 @@ 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)

adapter/router.go

@@ -2,7 +2,6 @@ package adapter
 
 import (
 	"context"
-	"crypto/tls"
 	"net"
 	"net/http"
 	"sync"
@@ -10,7 +9,6 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/common/ntp"
 	"github.com/sagernet/sing/common/x/list"
 
 	"go4.org/netipx"
@@ -68,14 +66,12 @@ type RuleSetMetadata struct {
 	ContainsIPCIDRRule  bool
 }
 type HTTPStartContext struct {
-	ctx             context.Context
 	access          sync.Mutex
 	httpClientCache map[string]*http.Client
 }
 
-func NewHTTPStartContext(ctx context.Context) *HTTPStartContext {
+func NewHTTPStartContext() *HTTPStartContext {
 	return &HTTPStartContext{
-		ctx:             ctx,
 		httpClientCache: make(map[string]*http.Client),
 	}
 }
@@ -93,10 +89,6 @@ func (c *HTTPStartContext) HTTPClient(detour string, dialer N.Dialer) *http.Clie
 			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
 				return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
 			},
-			TLSClientConfig: &tls.Config{
-				Time:    ntp.TimeFuncFromContext(c.ctx),
-				RootCAs: RootPoolFromContext(c.ctx),
-			},
 		},
 	}
 	c.httpClientCache[detour] = httpClient

box.go

@@ -12,7 +12,6 @@ import (
 	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/inbound"
 	"github.com/sagernet/sing-box/adapter/outbound"
-	"github.com/sagernet/sing-box/common/certificate"
 	"github.com/sagernet/sing-box/common/dialer"
 	"github.com/sagernet/sing-box/common/taskmonitor"
 	"github.com/sagernet/sing-box/common/tls"
@@ -142,20 +141,6 @@ func New(options Options) (*Box, error) {
 		return nil, E.Cause(err, "create log factory")
 	}
 
-	var services []adapter.LifecycleService
-	certificateOptions := common.PtrValueOrDefault(options.Certificate)
-	if C.IsAndroid || certificateOptions.Store != "" && certificateOptions.Store != C.CertificateStoreSystem ||
-		len(certificateOptions.Certificate) > 0 ||
-		len(certificateOptions.CertificatePath) > 0 ||
-		len(certificateOptions.CertificateDirectoryPath) > 0 {
-		certificateStore, err := certificate.NewStore(ctx, logFactory.NewLogger("certificate"), certificateOptions)
-		if err != nil {
-			return nil, err
-		}
-		service.MustRegister[adapter.CertificateStore](ctx, certificateStore)
-		services = append(services, certificateStore)
-	}
-
 	routeOptions := common.PtrValueOrDefault(options.Route)
 	dnsOptions := common.PtrValueOrDefault(options.DNS)
 	endpointManager := endpoint.NewManager(logFactory.NewLogger("endpoint"), endpointRegistry)
@@ -202,7 +187,7 @@ func New(options Options) (*Box, error) {
 			transportOptions.Options,
 		)
 		if err != nil {
-			return nil, E.Cause(err, "initialize DNS server[", i, "]")
+			return nil, E.Cause(err, "initialize inbound[", i, "]")
 		}
 	}
 	err = dnsRouter.Initialize(dnsOptions.Rules)
@@ -225,7 +210,7 @@ func New(options Options) (*Box, error) {
 			endpointOptions.Options,
 		)
 		if err != nil {
-			return nil, E.Cause(err, "initialize endpoint[", i, "]")
+			return nil, E.Cause(err, "initialize inbound[", i, "]")
 		}
 	}
 	for i, inboundOptions := range options.Inbounds {
@@ -295,6 +280,7 @@ func New(options Options) (*Box, error) {
 			return nil, E.Cause(err, "initialize platform interface")
 		}
 	}
+	var services []adapter.LifecycleService
 	if needCacheFile {
 		cacheFile := cachefile.New(ctx, common.PtrValueOrDefault(experimentalOptions.CacheFile))
 		service.MustRegister[adapter.CacheFile](ctx, cacheFile)
@@ -460,7 +446,7 @@ func (s *Box) Close() error {
 		close(s.done)
 	}
 	err := common.Close(
-		s.inbound, s.outbound, s.endpoint, s.router, s.connection, s.dnsRouter, s.dnsTransport, s.network,
+		s.inbound, s.outbound, s.router, s.connection, s.dnsRouter, s.dnsTransport, s.network,
 	)
 	for _, lifecycleService := range s.services {
 		err = E.Append(err, lifecycleService.Close(), func(err error) error {

cmd/internal/app_store_connect/main.go

@@ -5,7 +5,6 @@ import (
 	"net/http"
 	"os"
 	"strconv"
-	"strings"
 	"time"
 
 	"github.com/sagernet/asc-go/asc"
@@ -195,10 +194,6 @@ func publishTestflight(ctx context.Context) error {
 				log.Info(string(platform), " ", tag, " create submission")
 				_, _, err = client.TestFlight.CreateBetaAppReviewSubmission(ctx, build.ID)
 				if err != nil {
-					if strings.Contains(err.Error(), "ANOTHER_BUILD_IN_REVIEW") {
-						log.Error(err)
-						break
-					}
 					return err
 				}
 			}

cmd/internal/build_libbox/main.go

@@ -55,10 +55,10 @@ func init() {
 	if err != nil {
 		currentTag = "unknown"
 	}
-	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid=")
+	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid= -checklinkname=0")
 	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag)
 
-	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_tailscale")
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_ech", "with_utls", "with_clash_api", "with_tailscale")
 	iosTags = append(iosTags, "with_dhcp", "with_low_memory", "with_conntrack")
 	debugTags = append(debugTags, "debug")
 }

cmd/internal/build_shared/sdk.go

@@ -48,7 +48,7 @@ func FindSDK() {
 }
 
 func findNDK() bool {
-	const fixedVersion = "28.0.13004108"
+	const fixedVersion = "28.0.12674087"
 	const versionFile = "source.properties"
 	if fixedPath := filepath.Join(androidSDKPath, "ndk", fixedVersion); rw.IsFile(filepath.Join(fixedPath, versionFile)) {
 		androidNDKPath = fixedPath

cmd/internal/update_android_version/main.go

@@ -13,14 +13,10 @@ import (
 	"github.com/sagernet/sing/common"
 )
 
-var (
-	flagRunInCI    bool
-	flagRunNightly bool
-)
+var flagRunInCI bool
 
 func init() {
 	flag.BoolVar(&flagRunInCI, "ci", false, "Run in CI")
-	flag.BoolVar(&flagRunNightly, "nightly", false, "Run nightly")
 }
 
 func main() {
@@ -50,23 +46,21 @@ func main() {
 		switch propPair[0] {
 		case "VERSION_NAME":
 			if propPair[1] != newVersion {
-				log.Info("updated version from ", propPair[1], " to ", newVersion)
 				versionUpdated = true
 				propPair[1] = newVersion
+				log.Info("updated version to ", newVersion)
 			}
 		case "GO_VERSION":
 			if propPair[1] != runtime.Version() {
-				log.Info("updated Go version from ", propPair[1], " to ", runtime.Version())
 				goVersionUpdated = true
 				propPair[1] = runtime.Version()
+				log.Info("updated Go version to ", runtime.Version())
 			}
 		}
 	}
 	if !(versionUpdated || goVersionUpdated) {
 		log.Info("version not changed")
 		return
-	} else if flagRunInCI && !flagRunNightly {
-		log.Fatal("version changed, commit changes first.")
 	}
 	for _, propPair := range propsList {
 		switch propPair[0] {

cmd/internal/update_certificates/main.go

@@ -1,71 +0,0 @@
-package main
-
-import (
-	"encoding/csv"
-	"io"
-	"net/http"
-	"os"
-	"strings"
-
-	"github.com/sagernet/sing-box/log"
-
-	"golang.org/x/exp/slices"
-)
-
-func main() {
-	err := updateMozillaIncludedRootCAs()
-	if err != nil {
-		log.Error(err)
-	}
-}
-
-func updateMozillaIncludedRootCAs() error {
-	response, err := http.Get("https://ccadb.my.salesforce-sites.com/mozilla/IncludedCACertificateReportPEMCSV")
-	if err != nil {
-		return err
-	}
-	defer response.Body.Close()
-	reader := csv.NewReader(response.Body)
-	header, err := reader.Read()
-	if err != nil {
-		return err
-	}
-	geoIndex := slices.Index(header, "Geographic Focus")
-	nameIndex := slices.Index(header, "Common Name or Certificate Name")
-	certIndex := slices.Index(header, "PEM Info")
-
-	generated := strings.Builder{}
-	generated.WriteString(`// Code generated by 'make update_certificates'. DO NOT EDIT.
-
-package certificate
-
-import "crypto/x509"
-
-var mozillaIncluded *x509.CertPool
-
-func init() {
-	mozillaIncluded = x509.NewCertPool()
-`)
-	for {
-		record, err := reader.Read()
-		if err == io.EOF {
-			break
-		} else if err != nil {
-			return err
-		}
-		if record[geoIndex] == "China" {
-			continue
-		}
-		generated.WriteString("\n	// ")
-		generated.WriteString(record[nameIndex])
-		generated.WriteString("\n")
-		generated.WriteString("	mozillaIncluded.AppendCertsFromPEM([]byte(`")
-		cert := record[certIndex]
-		// Remove single quotes
-		cert = cert[1 : len(cert)-1]
-		generated.WriteString(cert)
-		generated.WriteString("`))\n")
-	}
-	generated.WriteString("}\n")
-	return os.WriteFile("common/certificate/mozilla.go", []byte(generated.String()), 0o644)
-}

cmd/sing-box/cmd_generate_ech.go

@@ -9,6 +9,8 @@ import (
 	"github.com/spf13/cobra"
 )
 
+var pqSignatureSchemesEnabled bool
+
 var commandGenerateECHKeyPair = &cobra.Command{
 	Use:   "ech-keypair <plain_server_name>",
 	Short: "Generate TLS ECH key pair",
@@ -22,11 +24,12 @@ 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)
+	configPem, keyPem, err := tls.ECHKeygenDefault(serverName, pqSignatureSchemesEnabled)
 	if err != nil {
 		return err
 	}

cmd/sing-box/cmd_generate_tls.go

@@ -30,7 +30,7 @@ func init() {
 }
 
 func generateTLSKeyPair(serverName string) error {
-	privateKeyPem, publicKeyPem, err := tls.GenerateCertificate(nil, nil, time.Now, serverName, time.Now().AddDate(0, flagGenerateTLSKeyPairMonths, 0))
+	privateKeyPem, publicKeyPem, err := tls.GenerateKeyPair(time.Now, serverName, time.Now().AddDate(0, flagGenerateTLSKeyPairMonths, 0))
 	if err != nil {
 		return err
 	}

cmd/sing-box/cmd_rule_set_upgrade.go

@@ -61,15 +61,14 @@ func upgradeRuleSet(sourcePath string) error {
 		log.Info("already up-to-date")
 		return nil
 	}
-	plainRuleSetCompat.Options, err = plainRuleSetCompat.Upgrade()
+	plainRuleSet, err := plainRuleSetCompat.Upgrade()
 	if err != nil {
 		return err
 	}
-	plainRuleSetCompat.Version = C.RuleSetVersionCurrent
 	buffer := new(bytes.Buffer)
 	encoder := json.NewEncoder(buffer)
 	encoder.SetIndent("", "  ")
-	err = encoder.Encode(plainRuleSetCompat)
+	err = encoder.Encode(plainRuleSet)
 	if err != nil {
 		return E.Cause(err, "encode config")
 	}

common/badtls/read_wait_ech.go

@@ -0,0 +1,31 @@
+//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/certificate/store.go

@@ -1,185 +0,0 @@
-package certificate
-
-import (
-	"context"
-	"crypto/x509"
-	"io/fs"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"github.com/sagernet/fswatch"
-	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/experimental/libbox/platform"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	"github.com/sagernet/sing/service"
-)
-
-var _ adapter.CertificateStore = (*Store)(nil)
-
-type Store struct {
-	systemPool                *x509.CertPool
-	currentPool               *x509.CertPool
-	certificate               string
-	certificatePaths          []string
-	certificateDirectoryPaths []string
-	watcher                   *fswatch.Watcher
-}
-
-func NewStore(ctx context.Context, logger logger.Logger, options option.CertificateOptions) (*Store, error) {
-	var systemPool *x509.CertPool
-	switch options.Store {
-	case C.CertificateStoreSystem, "":
-		systemPool = x509.NewCertPool()
-		platformInterface := service.FromContext[platform.Interface](ctx)
-		var systemValid bool
-		if platformInterface != nil {
-			for _, cert := range platformInterface.SystemCertificates() {
-				if systemPool.AppendCertsFromPEM([]byte(cert)) {
-					systemValid = true
-				}
-			}
-		}
-		if !systemValid {
-			certPool, err := x509.SystemCertPool()
-			if err != nil {
-				return nil, err
-			}
-			systemPool = certPool
-		}
-	case C.CertificateStoreMozilla:
-		systemPool = mozillaIncluded
-	case C.CertificateStoreNone:
-		systemPool = nil
-	default:
-		return nil, E.New("unknown certificate store: ", options.Store)
-	}
-	store := &Store{
-		systemPool:                systemPool,
-		certificate:               strings.Join(options.Certificate, "\n"),
-		certificatePaths:          options.CertificatePath,
-		certificateDirectoryPaths: options.CertificateDirectoryPath,
-	}
-	var watchPaths []string
-	for _, target := range options.CertificatePath {
-		watchPaths = append(watchPaths, target)
-	}
-	for _, target := range options.CertificateDirectoryPath {
-		watchPaths = append(watchPaths, target)
-	}
-	if len(watchPaths) > 0 {
-		watcher, err := fswatch.NewWatcher(fswatch.Options{
-			Path:   watchPaths,
-			Logger: logger,
-			Callback: func(_ string) {
-				err := store.update()
-				if err != nil {
-					logger.Error(E.Cause(err, "reload certificates"))
-				}
-			},
-		})
-		if err != nil {
-			return nil, E.Cause(err, "fswatch: create fsnotify watcher")
-		}
-		store.watcher = watcher
-	}
-	err := store.update()
-	if err != nil {
-		return nil, E.Cause(err, "initializing certificate store")
-	}
-	return store, nil
-}
-
-func (s *Store) Name() string {
-	return "certificate"
-}
-
-func (s *Store) Start(stage adapter.StartStage) error {
-	if stage != adapter.StartStateStart {
-		return nil
-	}
-	if s.watcher != nil {
-		return s.watcher.Start()
-	}
-	return nil
-}
-
-func (s *Store) Close() error {
-	if s.watcher != nil {
-		return s.watcher.Close()
-	}
-	return nil
-}
-
-func (s *Store) Pool() *x509.CertPool {
-	return s.currentPool
-}
-
-func (s *Store) update() error {
-	var currentPool *x509.CertPool
-	if s.systemPool == nil {
-		currentPool = x509.NewCertPool()
-	} else {
-		currentPool = s.systemPool.Clone()
-	}
-	if s.certificate != "" {
-		if !currentPool.AppendCertsFromPEM([]byte(s.certificate)) {
-			return E.New("invalid certificate PEM strings")
-		}
-	}
-	for _, path := range s.certificatePaths {
-		pemContent, err := os.ReadFile(path)
-		if err != nil {
-			return err
-		}
-		if !currentPool.AppendCertsFromPEM(pemContent) {
-			return E.New("invalid certificate PEM file: ", path)
-		}
-	}
-	var firstErr error
-	for _, directoryPath := range s.certificateDirectoryPaths {
-		directoryEntries, err := readUniqueDirectoryEntries(directoryPath)
-		if err != nil {
-			if firstErr == nil && !os.IsNotExist(err) {
-				firstErr = E.Cause(err, "invalid certificate directory: ", directoryPath)
-			}
-			continue
-		}
-		for _, directoryEntry := range directoryEntries {
-			pemContent, err := os.ReadFile(filepath.Join(directoryPath, directoryEntry.Name()))
-			if err == nil {
-				currentPool.AppendCertsFromPEM(pemContent)
-			}
-		}
-	}
-	if firstErr != nil {
-		return firstErr
-	}
-	s.currentPool = currentPool
-	return nil
-}
-
-func readUniqueDirectoryEntries(dir string) ([]fs.DirEntry, error) {
-	files, err := os.ReadDir(dir)
-	if err != nil {
-		return nil, err
-	}
-	uniq := files[:0]
-	for _, f := range files {
-		if !isSameDirSymlink(f, dir) {
-			uniq = append(uniq, f)
-		}
-	}
-	return uniq, nil
-}
-
-func isSameDirSymlink(f fs.DirEntry, dir string) bool {
-	if f.Type()&fs.ModeSymlink == 0 {
-		return false
-	}
-	target, err := os.Readlink(filepath.Join(dir, f.Name()))
-	return err == nil && !strings.Contains(target, "/")
-}

common/dialer/default.go

@@ -35,6 +35,7 @@ type DefaultDialer struct {
 	udpListener            net.ListenConfig
 	udpAddr4               string
 	udpAddr6               string
+	isWireGuardListener    bool
 	networkManager         adapter.NetworkManager
 	networkStrategy        *C.NetworkStrategy
 	defaultNetworkStrategy bool
@@ -182,6 +183,11 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		}
 		setMultiPathTCP(&dialer4)
 	}
+	if options.IsWireGuardListener {
+		for _, controlFn := range WgControlFns {
+			listener.Control = control.Append(listener.Control, controlFn)
+		}
+	}
 	tcpDialer4, err := newTCPDialer(dialer4, options.TCPFastOpen)
 	if err != nil {
 		return nil, err
@@ -198,6 +204,7 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		udpListener:            listener,
 		udpAddr4:               udpAddr4,
 		udpAddr6:               udpAddr6,
+		isWireGuardListener:    options.IsWireGuardListener,
 		networkManager:         networkManager,
 		networkStrategy:        networkStrategy,
 		defaultNetworkStrategy: defaultNetworkStrategy,
@@ -210,8 +217,6 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 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) {

common/dialer/default_parallel_interface.go

@@ -18,7 +18,6 @@ func (d *DefaultDialer) dialParallelInterface(ctx context.Context, dialer net.Di
 	if len(primaryInterfaces)+len(fallbackInterfaces) == 0 {
 		return nil, false, E.New("no available network interface")
 	}
-	defaultInterface := d.networkManager.InterfaceMonitor().DefaultInterface()
 	if fallbackDelay == 0 {
 		fallbackDelay = N.DefaultFallbackDelay
 	}
@@ -32,9 +31,7 @@ func (d *DefaultDialer) dialParallelInterface(ctx context.Context, dialer net.Di
 	results := make(chan dialResult) // unbuffered
 	startRacer := func(ctx context.Context, primary bool, iif adapter.NetworkInterface) {
 		perNetDialer := dialer
-		if defaultInterface == nil || iif.Index != defaultInterface.Index {
-			perNetDialer.Control = control.Append(perNetDialer.Control, control.BindToInterface(nil, iif.Name, iif.Index))
-		}
+		perNetDialer.Control = control.Append(perNetDialer.Control, control.BindToInterface(nil, iif.Name, iif.Index))
 		conn, err := perNetDialer.DialContext(ctx, network, addr)
 		if err != nil {
 			select {
@@ -92,7 +89,6 @@ func (d *DefaultDialer) dialParallelInterfaceFastFallback(ctx context.Context, d
 	if len(primaryInterfaces)+len(fallbackInterfaces) == 0 {
 		return nil, false, E.New("no available network interface")
 	}
-	defaultInterface := d.networkManager.InterfaceMonitor().DefaultInterface()
 	if fallbackDelay == 0 {
 		fallbackDelay = N.DefaultFallbackDelay
 	}
@@ -107,9 +103,7 @@ func (d *DefaultDialer) dialParallelInterfaceFastFallback(ctx context.Context, d
 	results := make(chan dialResult) // unbuffered
 	startRacer := func(ctx context.Context, primary bool, iif adapter.NetworkInterface) {
 		perNetDialer := dialer
-		if defaultInterface == nil || iif.Index != defaultInterface.Index {
-			perNetDialer.Control = control.Append(perNetDialer.Control, control.BindToInterface(nil, iif.Name, iif.Index))
-		}
+		perNetDialer.Control = control.Append(perNetDialer.Control, control.BindToInterface(nil, iif.Name, iif.Index))
 		conn, err := perNetDialer.DialContext(ctx, network, addr)
 		if err != nil {
 			select {
@@ -155,13 +149,10 @@ func (d *DefaultDialer) listenSerialInterfacePacket(ctx context.Context, listene
 	if len(primaryInterfaces)+len(fallbackInterfaces) == 0 {
 		return nil, E.New("no available network interface")
 	}
-	defaultInterface := d.networkManager.InterfaceMonitor().DefaultInterface()
 	var errors []error
 	for _, primaryInterface := range primaryInterfaces {
 		perNetListener := listener
-		if defaultInterface == nil || primaryInterface.Index != defaultInterface.Index {
-			perNetListener.Control = control.Append(perNetListener.Control, control.BindToInterface(nil, primaryInterface.Name, primaryInterface.Index))
-		}
+		perNetListener.Control = control.Append(perNetListener.Control, control.BindToInterface(nil, primaryInterface.Name, primaryInterface.Index))
 		conn, err := perNetListener.ListenPacket(ctx, network, addr)
 		if err == nil {
 			return conn, nil
@@ -170,9 +161,7 @@ func (d *DefaultDialer) listenSerialInterfacePacket(ctx context.Context, listene
 	}
 	for _, fallbackInterface := range fallbackInterfaces {
 		perNetListener := listener
-		if defaultInterface == nil || fallbackInterface.Index != defaultInterface.Index {
-			perNetListener.Control = control.Append(perNetListener.Control, control.BindToInterface(nil, fallbackInterface.Name, fallbackInterface.Index))
-		}
+		perNetListener.Control = control.Append(perNetListener.Control, control.BindToInterface(nil, fallbackInterface.Name, fallbackInterface.Index))
 		conn, err := perNetListener.ListenPacket(ctx, network, addr)
 		if err == nil {
 			return conn, nil

common/dialer/detour.go

@@ -29,18 +29,16 @@ func (d *DetourDialer) Start() error {
 }
 
 func (d *DetourDialer) Dialer() (N.Dialer, error) {
-	d.initOnce.Do(d.init)
+	d.initOnce.Do(func() {
+		var loaded bool
+		d.dialer, loaded = d.outboundManager.Outbound(d.detour)
+		if !loaded {
+			d.initErr = E.New("outbound detour not found: ", d.detour)
+		}
+	})
 	return d.dialer, d.initErr
 }
 
-func (d *DetourDialer) init() {
-	var loaded bool
-	d.dialer, loaded = d.outboundManager.Outbound(d.detour)
-	if !loaded {
-		d.initErr = E.New("outbound detour not found: ", d.detour)
-	}
-}
-
 func (d *DetourDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	dialer, err := d.Dialer()
 	if err != nil {

common/dialer/dialer.go

@@ -16,108 +16,81 @@ import (
 	"github.com/sagernet/sing/service"
 )
 
-type Options struct {
-	Context          context.Context
-	Options          option.DialerOptions
-	RemoteIsDomain   bool
-	DirectResolver   bool
-	ResolverOnDetour bool
-	NewDialer        bool
-}
-
-// TODO: merge with NewWithOptions
 func New(ctx context.Context, options option.DialerOptions, remoteIsDomain bool) (N.Dialer, error) {
-	return NewWithOptions(Options{
-		Context:        ctx,
-		Options:        options,
-		RemoteIsDomain: remoteIsDomain,
-	})
-}
-
-func NewWithOptions(options Options) (N.Dialer, error) {
-	dialOptions := options.Options
+	if options.IsWireGuardListener {
+		return NewDefault(ctx, options)
+	}
 	var (
 		dialer N.Dialer
 		err    error
 	)
-	if dialOptions.Detour != "" {
-		outboundManager := service.FromContext[adapter.OutboundManager](options.Context)
-		if outboundManager == nil {
-			return nil, E.New("missing outbound manager")
-		}
-		dialer = NewDetour(outboundManager, dialOptions.Detour)
-	} else {
-		dialer, err = NewDefault(options.Context, dialOptions)
+	if options.Detour == "" {
+		dialer, err = NewDefault(ctx, options)
 		if err != nil {
 			return nil, err
 		}
+	} else {
+		outboundManager := service.FromContext[adapter.OutboundManager](ctx)
+		if outboundManager == nil {
+			return nil, E.New("missing outbound manager")
+		}
+		dialer = NewDetour(outboundManager, options.Detour)
 	}
-	if options.RemoteIsDomain && (dialOptions.Detour == "" || options.ResolverOnDetour) {
-		networkManager := service.FromContext[adapter.NetworkManager](options.Context)
-		dnsTransport := service.FromContext[adapter.DNSTransportManager](options.Context)
-		var defaultOptions adapter.NetworkOptions
-		if networkManager != nil {
-			defaultOptions = networkManager.DefaultOptions()
-		}
-		var (
-			server               string
-			dnsQueryOptions      adapter.DNSQueryOptions
-			resolveFallbackDelay time.Duration
-		)
-		if dialOptions.DomainResolver != nil && dialOptions.DomainResolver.Server != "" {
-			var transport adapter.DNSTransport
-			if !options.DirectResolver {
-				var loaded bool
-				transport, loaded = dnsTransport.Transport(dialOptions.DomainResolver.Server)
+	if remoteIsDomain && options.Detour == "" && options.DomainResolver == "" {
+		deprecated.Report(ctx, deprecated.OptionMissingDomainResolverInDialOptions)
+	}
+	if (options.Detour == "" && remoteIsDomain) || options.DomainResolver != "" {
+		router := service.FromContext[adapter.DNSRouter](ctx)
+		if router != nil {
+			var resolveTransport adapter.DNSTransport
+			if options.DomainResolver != "" {
+				transport, loaded := service.FromContext[adapter.DNSTransportManager](ctx).Transport(options.DomainResolver)
 				if !loaded {
-					return nil, E.New("domain resolver not found: " + dialOptions.DomainResolver.Server)
+					return nil, E.New("DNS server not found: " + options.DomainResolver)
 				}
+				resolveTransport = transport
 			}
-			var strategy C.DomainStrategy
-			if dialOptions.DomainResolver.Strategy != option.DomainStrategy(C.DomainStrategyAsIS) {
-				strategy = C.DomainStrategy(dialOptions.DomainResolver.Strategy)
-			} else if
-			//nolint:staticcheck
-			dialOptions.DomainStrategy != option.DomainStrategy(C.DomainStrategyAsIS) {
-				//nolint:staticcheck
-				strategy = C.DomainStrategy(dialOptions.DomainStrategy)
-			}
-			server = dialOptions.DomainResolver.Server
-			dnsQueryOptions = adapter.DNSQueryOptions{
-				Transport:    transport,
-				Strategy:     strategy,
-				DisableCache: dialOptions.DomainResolver.DisableCache,
-				RewriteTTL:   dialOptions.DomainResolver.RewriteTTL,
-				ClientSubnet: dialOptions.DomainResolver.ClientSubnet.Build(netip.Prefix{}),
-			}
-			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 if options.NewDialer {
-			return nil, E.New("missing domain resolver for domain server address")
-		} else {
-			deprecated.Report(options.Context, deprecated.OptionMissingDomainResolver)
+			dialer = NewResolveDialer(
+				router,
+				dialer,
+				options.Detour == "" && !options.TCPFastOpen,
+				resolveTransport,
+				C.DomainStrategy(options.DomainStrategy),
+				time.Duration(options.FallbackDelay))
 		}
-		dialer = NewResolveDialer(
-			options.Context,
-			dialer,
-			dialOptions.Detour == "" && !dialOptions.TCPFastOpen,
-			server,
-			dnsQueryOptions,
-			resolveFallbackDelay,
-		)
 	}
 	return dialer, nil
 }
 
+func NewDirect(ctx context.Context, options option.DialerOptions) (ParallelInterfaceDialer, error) {
+	if options.Detour != "" {
+		return nil, E.New("`detour` is not supported in direct context")
+	}
+	if options.IsWireGuardListener {
+		return NewDefault(ctx, options)
+	}
+	dialer, err := NewDefault(ctx, options)
+	if err != nil {
+		return nil, err
+	}
+	var resolveTransport adapter.DNSTransport
+	if options.DomainResolver != "" {
+		transport, loaded := service.FromContext[adapter.DNSTransportManager](ctx).Transport(options.DomainResolver)
+		if !loaded {
+			return nil, E.New("DNS server not found: " + options.DomainResolver)
+		}
+		resolveTransport = transport
+	}
+	return NewResolveParallelInterfaceDialer(
+		service.FromContext[adapter.DNSRouter](ctx),
+		dialer,
+		true,
+		resolveTransport,
+		C.DomainStrategy(options.DomainStrategy),
+		time.Duration(options.FallbackDelay),
+	), nil
+}
+
 type ParallelInterfaceDialer interface {
 	N.Dialer
 	DialParallelInterface(ctx context.Context, network string, destination M.Socksaddr, strategy *C.NetworkStrategy, interfaceType []C.InterfaceType, fallbackInterfaceType []C.InterfaceType, fallbackDelay time.Duration) (net.Conn, error)

common/dialer/resolve.go

@@ -3,17 +3,14 @@ package dialer
 import (
 	"context"
 	"net"
-	"sync"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing/common/bufio"
-	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"
 )
 
 var (
@@ -21,51 +18,23 @@ var (
 	_ ParallelInterfaceDialer = (*resolveParallelNetworkDialer)(nil)
 )
 
-type ResolveDialer interface {
-	N.Dialer
-	QueryOptions() adapter.DNSQueryOptions
-}
-
-type ParallelInterfaceResolveDialer interface {
-	ParallelInterfaceDialer
-	QueryOptions() adapter.DNSQueryOptions
-}
-
 type resolveDialer struct {
-	transport     adapter.DNSTransportManager
-	router        adapter.DNSRouter
 	dialer        N.Dialer
 	parallel      bool
-	server        string
-	initOnce      sync.Once
-	initErr       error
-	queryOptions  adapter.DNSQueryOptions
+	router        adapter.DNSRouter
+	transport     adapter.DNSTransport
+	strategy      C.DomainStrategy
 	fallbackDelay time.Duration
 }
 
-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,
-		}
-	}
+func NewResolveDialer(router adapter.DNSRouter, dialer N.Dialer, parallel bool, transport adapter.DNSTransport, strategy C.DomainStrategy, fallbackDelay time.Duration) N.Dialer {
 	return &resolveDialer{
-		transport:     service.FromContext[adapter.DNSTransportManager](ctx),
-		router:        service.FromContext[adapter.DNSRouter](ctx),
-		dialer:        dialer,
-		parallel:      parallel,
-		server:        server,
-		queryOptions:  queryOptions,
-		fallbackDelay: fallbackDelay,
+		dialer,
+		parallel,
+		router,
+		transport,
+		strategy,
+		fallbackDelay,
 	}
 }
 
@@ -74,53 +43,42 @@ type resolveParallelNetworkDialer struct {
 	dialer ParallelInterfaceDialer
 }
 
-func (d *resolveDialer) initialize() error {
-	d.initOnce.Do(d.initServer)
-	return d.initErr
-}
-
-func (d *resolveDialer) initServer() {
-	if d.server == "" {
-		return
+func NewResolveParallelInterfaceDialer(router adapter.DNSRouter, dialer ParallelInterfaceDialer, parallel bool, transport adapter.DNSTransport, strategy C.DomainStrategy, fallbackDelay time.Duration) ParallelInterfaceDialer {
+	return &resolveParallelNetworkDialer{
+		resolveDialer{
+			dialer,
+			parallel,
+			router,
+			transport,
+			strategy,
+			fallbackDelay,
+		},
+		dialer,
 	}
-	transport, loaded := d.transport.Transport(d.server)
-	if !loaded {
-		d.initErr = E.New("domain resolver not found: " + d.server)
-		return
-	}
-	d.queryOptions.Transport = transport
 }
 
 func (d *resolveDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
-	err := d.initialize()
-	if err != nil {
-		return nil, err
-	}
 	if !destination.IsFqdn() {
 		return d.dialer.DialContext(ctx, network, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
-	addresses, err := d.router.Lookup(ctx, destination.Fqdn, d.queryOptions)
+	addresses, err := d.router.Lookup(ctx, destination.Fqdn, adapter.DNSQueryOptions{Transport: d.transport, Strategy: d.strategy})
 	if err != nil {
 		return nil, err
 	}
 	if d.parallel {
-		return N.DialParallel(ctx, d.dialer, network, destination, addresses, d.queryOptions.Strategy == C.DomainStrategyPreferIPv6, d.fallbackDelay)
+		return N.DialParallel(ctx, d.dialer, network, destination, addresses, d.strategy == C.DomainStrategyPreferIPv6, d.fallbackDelay)
 	} else {
 		return N.DialSerial(ctx, d.dialer, network, destination, addresses)
 	}
 }
 
 func (d *resolveDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
-	err := d.initialize()
-	if err != nil {
-		return nil, err
-	}
 	if !destination.IsFqdn() {
 		return d.dialer.ListenPacket(ctx, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
-	addresses, err := d.router.Lookup(ctx, destination.Fqdn, d.queryOptions)
+	addresses, err := d.router.Lookup(ctx, destination.Fqdn, adapter.DNSQueryOptions{Transport: d.transport, Strategy: d.strategy})
 	if err != nil {
 		return nil, err
 	}
@@ -131,24 +89,12 @@ func (d *resolveDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 	return bufio.NewNATPacketConn(bufio.NewPacketConn(conn), M.SocksaddrFrom(destinationAddress, destination.Port), destination), nil
 }
 
-func (d *resolveDialer) QueryOptions() adapter.DNSQueryOptions {
-	return d.queryOptions
-}
-
-func (d *resolveDialer) Upstream() any {
-	return d.dialer
-}
-
 func (d *resolveParallelNetworkDialer) DialParallelInterface(ctx context.Context, network string, destination M.Socksaddr, strategy *C.NetworkStrategy, interfaceType []C.InterfaceType, fallbackInterfaceType []C.InterfaceType, fallbackDelay time.Duration) (net.Conn, error) {
-	err := d.initialize()
-	if err != nil {
-		return nil, err
-	}
 	if !destination.IsFqdn() {
 		return d.dialer.DialContext(ctx, network, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
-	addresses, err := d.router.Lookup(ctx, destination.Fqdn, d.queryOptions)
+	addresses, err := d.router.Lookup(ctx, destination.Fqdn, adapter.DNSQueryOptions{Transport: d.transport, Strategy: d.strategy})
 	if err != nil {
 		return nil, err
 	}
@@ -156,28 +102,21 @@ func (d *resolveParallelNetworkDialer) DialParallelInterface(ctx context.Context
 		fallbackDelay = d.fallbackDelay
 	}
 	if d.parallel {
-		return DialParallelNetwork(ctx, d.dialer, network, destination, addresses, d.queryOptions.Strategy == C.DomainStrategyPreferIPv6, strategy, interfaceType, fallbackInterfaceType, fallbackDelay)
+		return DialParallelNetwork(ctx, d.dialer, network, destination, addresses, d.strategy == C.DomainStrategyPreferIPv6, strategy, interfaceType, fallbackInterfaceType, fallbackDelay)
 	} else {
 		return DialSerialNetwork(ctx, d.dialer, network, destination, addresses, strategy, interfaceType, fallbackInterfaceType, fallbackDelay)
 	}
 }
 
 func (d *resolveParallelNetworkDialer) ListenSerialInterfacePacket(ctx context.Context, destination M.Socksaddr, strategy *C.NetworkStrategy, interfaceType []C.InterfaceType, fallbackInterfaceType []C.InterfaceType, fallbackDelay time.Duration) (net.PacketConn, error) {
-	err := d.initialize()
-	if err != nil {
-		return nil, err
-	}
 	if !destination.IsFqdn() {
 		return d.dialer.ListenPacket(ctx, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
-	addresses, err := d.router.Lookup(ctx, destination.Fqdn, d.queryOptions)
+	addresses, err := d.router.Lookup(ctx, destination.Fqdn, adapter.DNSQueryOptions{Transport: d.transport, Strategy: d.strategy})
 	if err != nil {
 		return nil, err
 	}
-	if fallbackDelay == 0 {
-		fallbackDelay = d.fallbackDelay
-	}
 	conn, destinationAddress, err := ListenSerialNetworkPacket(ctx, d.dialer, destination, addresses, strategy, interfaceType, fallbackInterfaceType, fallbackDelay)
 	if err != nil {
 		return nil, err
@@ -185,10 +124,6 @@ func (d *resolveParallelNetworkDialer) ListenSerialInterfacePacket(ctx context.C
 	return bufio.NewNATPacketConn(bufio.NewPacketConn(conn), M.SocksaddrFrom(destinationAddress, destination.Port), destination), nil
 }
 
-func (d *resolveParallelNetworkDialer) QueryOptions() adapter.DNSQueryOptions {
-	return d.queryOptions
-}
-
-func (d *resolveParallelNetworkDialer) Upstream() any {
+func (d *resolveDialer) Upstream() any {
 	return d.dialer
 }

common/process/searcher.go

@@ -23,7 +23,6 @@ type Config struct {
 }
 
 type Info struct {
-	ProcessID   uint32
 	ProcessPath string
 	PackageName string
 	User        string

common/process/searcher_windows.go

@@ -2,11 +2,14 @@ package process
 
 import (
 	"context"
+	"fmt"
 	"net/netip"
+	"os"
 	"syscall"
+	"unsafe"
 
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/winiphlpapi"
+	N "github.com/sagernet/sing/common/network"
 
 	"golang.org/x/sys/windows"
 )
@@ -23,39 +26,209 @@ func NewSearcher(_ Config) (Searcher, error) {
 	return &windowsSearcher{}, nil
 }
 
+var (
+	modiphlpapi                    = windows.NewLazySystemDLL("iphlpapi.dll")
+	procGetExtendedTcpTable        = modiphlpapi.NewProc("GetExtendedTcpTable")
+	procGetExtendedUdpTable        = modiphlpapi.NewProc("GetExtendedUdpTable")
+	modkernel32                    = windows.NewLazySystemDLL("kernel32.dll")
+	procQueryFullProcessImageNameW = modkernel32.NewProc("QueryFullProcessImageNameW")
+)
+
 func initWin32API() error {
-	return winiphlpapi.LoadExtendedTable()
+	err := modiphlpapi.Load()
+	if err != nil {
+		return E.Cause(err, "load iphlpapi.dll")
+	}
+
+	err = procGetExtendedTcpTable.Find()
+	if err != nil {
+		return E.Cause(err, "load iphlpapi::GetExtendedTcpTable")
+	}
+
+	err = procGetExtendedUdpTable.Find()
+	if err != nil {
+		return E.Cause(err, "load iphlpapi::GetExtendedUdpTable")
+	}
+
+	err = modkernel32.Load()
+	if err != nil {
+		return E.Cause(err, "load kernel32.dll")
+	}
+
+	err = procQueryFullProcessImageNameW.Find()
+	if err != nil {
+		return E.Cause(err, "load kernel32::QueryFullProcessImageNameW")
+	}
+
+	return nil
 }
 
 func (s *windowsSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
-	pid, err := winiphlpapi.FindPid(network, source)
+	processName, err := findProcessName(network, source.Addr(), int(source.Port()))
 	if err != nil {
 		return nil, err
 	}
-	path, err := getProcessPath(pid)
-	if err != nil {
-		return &Info{ProcessID: pid, UserId: -1}, err
-	}
-	return &Info{ProcessID: pid, ProcessPath: path, UserId: -1}, nil
+	return &Info{ProcessPath: processName, UserId: -1}, nil
 }
 
-func getProcessPath(pid uint32) (string, error) {
+func findProcessName(network string, ip netip.Addr, srcPort int) (string, error) {
+	family := windows.AF_INET
+	if ip.Is6() {
+		family = windows.AF_INET6
+	}
+
+	const (
+		tcpTablePidConn = 4
+		udpTablePid     = 1
+	)
+
+	var class int
+	var fn uintptr
+	switch network {
+	case N.NetworkTCP:
+		fn = procGetExtendedTcpTable.Addr()
+		class = tcpTablePidConn
+	case N.NetworkUDP:
+		fn = procGetExtendedUdpTable.Addr()
+		class = udpTablePid
+	default:
+		return "", os.ErrInvalid
+	}
+
+	buf, err := getTransportTable(fn, family, class)
+	if err != nil {
+		return "", err
+	}
+
+	s := newSearcher(family == windows.AF_INET, network == N.NetworkTCP)
+
+	pid, err := s.Search(buf, ip, uint16(srcPort))
+	if err != nil {
+		return "", err
+	}
+	return getExecPathFromPID(pid)
+}
+
+type searcher struct {
+	itemSize int
+	port     int
+	ip       int
+	ipSize   int
+	pid      int
+	tcpState int
+}
+
+func (s *searcher) Search(b []byte, ip netip.Addr, port uint16) (uint32, error) {
+	n := int(readNativeUint32(b[:4]))
+	itemSize := s.itemSize
+	for i := 0; i < n; i++ {
+		row := b[4+itemSize*i : 4+itemSize*(i+1)]
+
+		if s.tcpState >= 0 {
+			tcpState := readNativeUint32(row[s.tcpState : s.tcpState+4])
+			// MIB_TCP_STATE_ESTAB, only check established connections for TCP
+			if tcpState != 5 {
+				continue
+			}
+		}
+
+		// according to MSDN, only the lower 16 bits of dwLocalPort are used and the port number is in network endian.
+		// this field can be illustrated as follows depends on different machine endianess:
+		//     little endian: [ MSB LSB  0   0  ]   interpret as native uint32 is ((LSB<<8)|MSB)
+		//       big  endian: [  0   0  MSB LSB ]   interpret as native uint32 is ((MSB<<8)|LSB)
+		// so we need an syscall.Ntohs on the lower 16 bits after read the port as native uint32
+		srcPort := syscall.Ntohs(uint16(readNativeUint32(row[s.port : s.port+4])))
+		if srcPort != port {
+			continue
+		}
+
+		srcIP, _ := netip.AddrFromSlice(row[s.ip : s.ip+s.ipSize])
+		// windows binds an unbound udp socket to 0.0.0.0/[::] while first sendto
+		if ip != srcIP && (!srcIP.IsUnspecified() || s.tcpState != -1) {
+			continue
+		}
+
+		pid := readNativeUint32(row[s.pid : s.pid+4])
+		return pid, nil
+	}
+	return 0, ErrNotFound
+}
+
+func newSearcher(isV4, isTCP bool) *searcher {
+	var itemSize, port, ip, ipSize, pid int
+	tcpState := -1
+	switch {
+	case isV4 && isTCP:
+		// struct MIB_TCPROW_OWNER_PID
+		itemSize, port, ip, ipSize, pid, tcpState = 24, 8, 4, 4, 20, 0
+	case isV4 && !isTCP:
+		// struct MIB_UDPROW_OWNER_PID
+		itemSize, port, ip, ipSize, pid = 12, 4, 0, 4, 8
+	case !isV4 && isTCP:
+		// struct MIB_TCP6ROW_OWNER_PID
+		itemSize, port, ip, ipSize, pid, tcpState = 56, 20, 0, 16, 52, 48
+	case !isV4 && !isTCP:
+		// struct MIB_UDP6ROW_OWNER_PID
+		itemSize, port, ip, ipSize, pid = 28, 20, 0, 16, 24
+	}
+
+	return &searcher{
+		itemSize: itemSize,
+		port:     port,
+		ip:       ip,
+		ipSize:   ipSize,
+		pid:      pid,
+		tcpState: tcpState,
+	}
+}
+
+func getTransportTable(fn uintptr, family int, class int) ([]byte, error) {
+	for size, buf := uint32(8), make([]byte, 8); ; {
+		ptr := unsafe.Pointer(&buf[0])
+		err, _, _ := syscall.SyscallN(fn, uintptr(ptr), uintptr(unsafe.Pointer(&size)), 0, uintptr(family), uintptr(class), 0)
+
+		switch err {
+		case 0:
+			return buf, nil
+		case uintptr(syscall.ERROR_INSUFFICIENT_BUFFER):
+			buf = make([]byte, size)
+		default:
+			return nil, fmt.Errorf("syscall error: %d", err)
+		}
+	}
+}
+
+func readNativeUint32(b []byte) uint32 {
+	return *(*uint32)(unsafe.Pointer(&b[0]))
+}
+
+func getExecPathFromPID(pid uint32) (string, error) {
+	// kernel process starts with a colon in order to distinguish with normal processes
 	switch pid {
 	case 0:
+		// reserved pid for system idle process
 		return ":System Idle Process", nil
 	case 4:
+		// reserved pid for windows kernel image
 		return ":System", nil
 	}
-	handle, err := windows.OpenProcess(windows.PROCESS_QUERY_LIMITED_INFORMATION, false, pid)
+	h, err := windows.OpenProcess(windows.PROCESS_QUERY_LIMITED_INFORMATION, false, pid)
 	if err != nil {
 		return "", err
 	}
-	defer windows.CloseHandle(handle)
-	size := uint32(syscall.MAX_LONG_PATH)
+	defer windows.CloseHandle(h)
+
 	buf := make([]uint16, syscall.MAX_LONG_PATH)
-	err = windows.QueryFullProcessImageName(handle, 0, &buf[0], &size)
-	if err != nil {
+	size := uint32(len(buf))
+	r1, _, err := syscall.SyscallN(
+		procQueryFullProcessImageNameW.Addr(),
+		uintptr(h),
+		uintptr(0),
+		uintptr(unsafe.Pointer(&buf[0])),
+		uintptr(unsafe.Pointer(&size)),
+	)
+	if r1 == 0 {
 		return "", err
 	}
-	return windows.UTF16ToString(buf[:size]), nil
+	return syscall.UTF16ToString(buf[:size]), nil
 }

common/sniff/quic_test.go

@@ -12,26 +12,6 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestSniffQUICChromeNew(t *testing.T) {
-	t.Parallel()
-	pkt, err := hex.DecodeString("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")
-	require.NoError(t, err)
-	var metadata adapter.InboundContext
-	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
-	require.Equal(t, metadata.Protocol, C.ProtocolQUIC)
-	require.Equal(t, metadata.Client, C.ClientChromium)
-	require.ErrorIs(t, err, sniff.ErrClientHelloFragmented)
-	pkt, err = hex.DecodeString("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")
-	require.NoError(t, err)
-	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
-	require.ErrorIs(t, err, sniff.ErrClientHelloFragmented)
-	pkt, err = hex.DecodeString("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")
-	require.NoError(t, err)
-	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
-	require.NoError(t, err)
-	require.Equal(t, "www.google.com", metadata.Domain)
-}
-
 func TestSniffQUICChromium(t *testing.T) {
 	t.Parallel()
 	pkt, err := hex.DecodeString("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")

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/v3/acme"
+	"github.com/mholt/acmez/acme"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )

common/tls/client.go

@@ -29,12 +29,15 @@ func NewClient(ctx context.Context, serverAddress string, options option.Outboun
 	if !options.Enabled {
 		return nil, nil
 	}
-	if options.Reality != nil && options.Reality.Enabled {
+	if options.ECH != nil && options.ECH.Enabled {
+		return NewECHClient(ctx, serverAddress, options)
+	} else 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/ech.go

@@ -1,174 +0,0 @@
-//go:build go1.24
-
-package tls
-
-import (
-	"context"
-	"crypto/tls"
-	"encoding/base64"
-	"encoding/pem"
-	"net"
-	"os"
-	"strings"
-
-	"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{tlsConfig}, 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
-	dnsRouter adapter.DNSRouter
-}
-
-func (s *STDECHClientConfig) ClientHandshake(ctx context.Context, conn net.Conn) (aTLS.Conn, error) {
-	if len(s.config.EncryptedClientHelloConfigList) == 0 {
-		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")
-		}
-		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.config.EncryptedClientHelloConfigList = echConfigList
-					}
-				}
-			}
-		}
-		return nil, E.New("no ECH config found in DNS records")
-	}
-	tlsConn, err := s.Client(conn)
-	if err != nil {
-		return nil, err
-	}
-	err = tlsConn.HandshakeContext(ctx)
-	if err != nil {
-		return nil, err
-	}
-	return tlsConn, nil
-}
-
-func (s *STDECHClientConfig) Clone() Config {
-	return &STDECHClientConfig{STDClientConfig{s.config.Clone()}, s.dnsRouter}
-}
-
-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

@@ -0,0 +1,243 @@
+//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)
+	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

@@ -1,3 +1,5 @@
+//go:build with_ech
+
 package tls
 
 import (
@@ -5,13 +7,14 @@ 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) (configPem string, keyPem string, err error) {
+func ECHKeygenDefault(serverName string, pqSignatureSchemesEnabled bool) (configPem string, keyPem string, err error) {
 	cipherSuites := []echCipherSuite{
 		{
 			kdf:  hpke.KDF_HKDF_SHA256,
@@ -21,9 +24,13 @@ func ECHKeygenDefault(serverName string) (configPem string, keyPem string, err e
 			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 {
@@ -52,6 +59,7 @@ func ECHKeygenDefault(serverName string) (configPem string, keyPem string, err e
 
 type echKeyConfigPair struct {
 	id      uint8
+	key     cftls.EXP_ECHKey
 	rawKey  []byte
 	conf    myECHKeyConfig
 	rawConf []byte
@@ -147,6 +155,15 @@ 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

@@ -0,0 +1,55 @@
+//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

@@ -0,0 +1,278 @@
+//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 from ", path))
+			}
+		},
+	})
+	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

@@ -1,23 +1,25 @@
-//go:build !go1.24
+//go:build !with_ech
 
 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"
 )
 
-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.")
+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 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 NewECHClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+	return nil, errECHNotIncluded
 }
 
-func reloadECHKeys(echKeyPath string, tlsConfig *tls.Config) 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
 }

common/tls/mkcert.go

@@ -11,11 +11,8 @@ import (
 	"time"
 )
 
-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))
+func GenerateCertificate(timeFunc func() time.Time, serverName string) (*tls.Certificate, error) {
+	privateKeyPem, publicKeyPem, err := GenerateKeyPair(timeFunc, serverName, timeFunc().Add(time.Hour))
 	if err != nil {
 		return nil, err
 	}
@@ -26,7 +23,10 @@ func GenerateKeyPair(parent *x509.Certificate, parentKey any, timeFunc func() ti
 	return &certificate, err
 }
 
-func GenerateCertificate(parent *x509.Certificate, parentKey any, timeFunc func() time.Time, serverName string, expire time.Time) (privateKeyPem []byte, publicKeyPem []byte, err error) {
+func GenerateKeyPair(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
@@ -47,11 +47,7 @@ func GenerateCertificate(parent *x509.Certificate, parentKey any, timeFunc func(
 		},
 		DNSNames: []string{serverName},
 	}
-	if parent == nil {
-		parent = template
-		parentKey = key
-	}
-	publicDer, err := x509.CreateCertificate(rand.Reader, template, parent, key.Public(), parentKey)
+	publicDer, err := x509.CreateCertificate(rand.Reader, template, template, key.Public(), key)
 	if err != nil {
 		return
 	}

common/tls/reality_client.go

@@ -27,11 +27,9 @@ import (
 	"time"
 	"unsafe"
 
-	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
 	"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"
 
@@ -42,7 +40,6 @@ import (
 var _ ConfigCompat = (*RealityClientConfig)(nil)
 
 type RealityClientConfig struct {
-	ctx       context.Context
 	uClient   *UTLSClientConfig
 	publicKey []byte
 	shortID   [8]byte
@@ -73,7 +70,7 @@ func NewRealityClient(ctx context.Context, serverAddress string, options option.
 	if decodedLen > 8 {
 		return nil, E.New("invalid short_id")
 	}
-	return &RealityClientConfig{ctx, uClient, publicKey, shortID}, nil
+	return &RealityClientConfig{uClient, publicKey, shortID}, nil
 }
 
 func (e *RealityClientConfig) ServerName() string {
@@ -183,24 +180,20 @@ func (e *RealityClientConfig) ClientHandshake(ctx context.Context, conn net.Conn
 	}
 
 	if !verifier.verified {
-		go realityClientFallback(e.ctx, uConn, e.uClient.ServerName(), e.uClient.id)
+		go realityClientFallback(uConn, e.uClient.ServerName(), e.uClient.id)
 		return nil, E.New("reality verification failed")
 	}
 
 	return &realityClientConnWrapper{uConn}, nil
 }
 
-func realityClientFallback(ctx context.Context, uConn net.Conn, serverName string, fingerprint utls.ClientHelloID) {
+func realityClientFallback(uConn net.Conn, serverName string, fingerprint utls.ClientHelloID) {
 	defer uConn.Close()
 	client := &http.Client{
 		Transport: &http2.Transport{
 			DialTLSContext: func(ctx context.Context, network, addr string, config *tls.Config) (net.Conn, error) {
 				return uConn, nil
 			},
-			TLSClientConfig: &tls.Config{
-				Time:    ntp.TimeFuncFromContext(ctx),
-				RootCAs: adapter.RootPoolFromContext(ctx),
-			},
 		},
 	}
 	request, _ := http.NewRequest("GET", "https://"+serverName, nil)
@@ -220,7 +213,6 @@ func (e *RealityClientConfig) SetSessionIDGenerator(generator func(clientHello [
 
 func (e *RealityClientConfig) Clone() Config {
 	return &RealityClientConfig{
-		e.ctx,
 		e.uClient.Clone().(*UTLSClientConfig),
 		e.publicKey,
 		e.shortID,

common/tls/server.go

@@ -16,10 +16,13 @@ func NewServer(ctx context.Context, logger log.Logger, options option.InboundTLS
 	if !options.Enabled {
 		return nil, nil
 	}
-	if options.Reality != nil && options.Reality.Enabled {
+	if options.ECH != nil && options.ECH.Enabled {
+		return NewECHServer(ctx, logger, options)
+	} else 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

@@ -8,7 +8,6 @@ import (
 	"os"
 	"strings"
 
-	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/ntp"
@@ -59,7 +58,6 @@ func NewSTDClient(ctx context.Context, serverAddress string, options option.Outb
 
 	var tlsConfig tls.Config
 	tlsConfig.Time = ntp.TimeFuncFromContext(ctx)
-	tlsConfig.RootCAs = adapter.RootPoolFromContext(ctx)
 	if options.DisableSNI {
 		tlsConfig.ServerName = "127.0.0.1"
 	} else {
@@ -127,8 +125,5 @@ 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

@@ -26,7 +26,6 @@ type STDServerConfig struct {
 	key             []byte
 	certificatePath string
 	keyPath         string
-	echKeyPath      string
 	watcher         *fswatch.Watcher
 }
 
@@ -95,15 +94,12 @@ 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) {
 			err := c.certificateUpdated(path)
 			if err != nil {
-				c.logger.Error(E.Cause(err, "reload certificate"))
+				c.logger.Error(err)
 			}
 		},
 	})
@@ -119,33 +115,25 @@ func (c *STDServerConfig) startWatcher() error {
 }
 
 func (c *STDServerConfig) certificateUpdated(path string) error {
-	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
-		}
-		keyPair, err := tls.X509KeyPair(c.certificate, c.key)
+	if path == c.certificatePath {
+		certificate, err := os.ReadFile(c.certificatePath)
 		if err != nil {
-			return E.Cause(err, "reload key pair")
+			return E.Cause(err, "reload certificate from ", c.certificatePath)
 		}
-		c.config.Certificates = []tls.Certificate{keyPair}
-		c.logger.Info("reloaded TLS certificate")
-	} else if path == c.echKeyPath {
-		err := reloadECHKeys(c.echKeyPath, c.config)
+		c.certificate = certificate
+	} else if path == c.keyPath {
+		key, err := os.ReadFile(c.keyPath)
 		if err != nil {
-			return err
+			return E.Cause(err, "reload key from ", c.keyPath)
 		}
-		c.logger.Info("reloaded ECH keys")
+		c.key = key
 	}
+	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
 }
 
@@ -234,7 +222,7 @@ func NewSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 		}
 		if certificate == nil && key == nil && options.Insecure {
 			tlsConfig.GetCertificate = func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
-				return GenerateKeyPair(nil, nil, ntp.TimeFuncFromContext(ctx), info.ServerName)
+				return GenerateCertificate(ntp.TimeFuncFromContext(ctx), info.ServerName)
 			}
 		} else {
 			if certificate == nil {
@@ -250,13 +238,6 @@ 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,
@@ -265,6 +246,5 @@ 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

@@ -12,7 +12,6 @@ import (
 	"os"
 	"strings"
 
-	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/ntp"
@@ -131,7 +130,6 @@ func NewUTLSClient(ctx context.Context, serverAddress string, options option.Out
 
 	var tlsConfig utls.Config
 	tlsConfig.Time = ntp.TimeFuncFromContext(ctx)
-	tlsConfig.RootCAs = adapter.RootPoolFromContext(ctx)
 	if options.DisableSNI {
 		tlsConfig.ServerName = "127.0.0.1"
 	} else {

common/tlsfragment/conn.go

@@ -1,107 +0,0 @@
-package tf
-
-import (
-	"context"
-	"math/rand"
-	"net"
-	"strings"
-	"time"
-
-	N "github.com/sagernet/sing/common/network"
-
-	"golang.org/x/net/publicsuffix"
-)
-
-type Conn struct {
-	net.Conn
-	tcpConn            *net.TCPConn
-	ctx                context.Context
-	firstPacketWritten bool
-	fallbackDelay      time.Duration
-}
-
-func NewConn(conn net.Conn, ctx context.Context, fallbackDelay time.Duration) (*Conn, error) {
-	tcpConn, _ := N.UnwrapReader(conn).(*net.TCPConn)
-	return &Conn{
-		Conn:          conn,
-		tcpConn:       tcpConn,
-		ctx:           ctx,
-		fallbackDelay: fallbackDelay,
-	}, nil
-}
-
-func (c *Conn) Write(b []byte) (n int, err error) {
-	if !c.firstPacketWritten {
-		defer func() {
-			c.firstPacketWritten = true
-		}()
-		serverName := indexTLSServerName(b)
-		if serverName != nil {
-			if c.tcpConn != nil {
-				err = c.tcpConn.SetNoDelay(true)
-				if err != nil {
-					return
-				}
-			}
-			splits := strings.Split(serverName.ServerName, ".")
-			currentIndex := serverName.Index
-			if publicSuffix := publicsuffix.List.PublicSuffix(serverName.ServerName); publicSuffix != "" {
-				splits = splits[:len(splits)-strings.Count(serverName.ServerName, ".")]
-			}
-			if len(splits) > 1 && splits[0] == "..." {
-				currentIndex += len(splits[0]) + 1
-				splits = splits[1:]
-			}
-			var splitIndexes []int
-			for i, split := range splits {
-				splitAt := rand.Intn(len(split))
-				splitIndexes = append(splitIndexes, currentIndex+splitAt)
-				currentIndex += len(split)
-				if i != len(splits)-1 {
-					currentIndex++
-				}
-			}
-			for i := 0; i <= len(splitIndexes); i++ {
-				var payload []byte
-				if i == 0 {
-					payload = b[:splitIndexes[i]]
-				} 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) {
-					err = writeAndWaitAck(c.ctx, c.tcpConn, payload, c.fallbackDelay)
-					if err != nil {
-						return
-					}
-				} else {
-					_, err = c.Conn.Write(payload)
-					if err != nil {
-						return
-					}
-				}
-			}
-			if c.tcpConn != nil {
-				err = c.tcpConn.SetNoDelay(false)
-				if err != nil {
-					return
-				}
-			}
-			return len(b), nil
-		}
-	}
-	return c.Conn.Write(b)
-}
-
-func (c *Conn) ReaderReplaceable() bool {
-	return true
-}
-
-func (c *Conn) WriterReplaceable() bool {
-	return c.firstPacketWritten
-}
-
-func (c *Conn) Upstream() any {
-	return c.Conn
-}

common/tlsfragment/index.go

@@ -1,131 +0,0 @@
-package tf
-
-import (
-	"encoding/binary"
-)
-
-const (
-	recordLayerHeaderLen    int    = 5
-	handshakeHeaderLen      int    = 6
-	randomDataLen           int    = 32
-	sessionIDHeaderLen      int    = 1
-	cipherSuiteHeaderLen    int    = 2
-	compressMethodHeaderLen int    = 1
-	extensionsHeaderLen     int    = 2
-	extensionHeaderLen      int    = 4
-	sniExtensionHeaderLen   int    = 5
-	contentType             uint8  = 22
-	handshakeType           uint8  = 1
-	sniExtensionType        uint16 = 0
-	sniNameDNSHostnameType  uint8  = 0
-	tlsVersionBitmask       uint16 = 0xFFFC
-	tls13                   uint16 = 0x0304
-)
-
-type myServerName struct {
-	Index      int
-	Length     int
-	ServerName string
-}
-
-func indexTLSServerName(payload []byte) *myServerName {
-	if len(payload) < recordLayerHeaderLen || payload[0] != contentType {
-		return nil
-	}
-	segmentLen := binary.BigEndian.Uint16(payload[3:5])
-	if len(payload) < recordLayerHeaderLen+int(segmentLen) {
-		return nil
-	}
-	serverName := indexTLSServerNameFromHandshake(payload[recordLayerHeaderLen : recordLayerHeaderLen+int(segmentLen)])
-	if serverName == nil {
-		return nil
-	}
-	serverName.Length += recordLayerHeaderLen
-	return serverName
-}
-
-func indexTLSServerNameFromHandshake(hs []byte) *myServerName {
-	if len(hs) < handshakeHeaderLen+randomDataLen+sessionIDHeaderLen {
-		return nil
-	}
-	if hs[0] != handshakeType {
-		return nil
-	}
-	handshakeLen := uint32(hs[1])<<16 | uint32(hs[2])<<8 | uint32(hs[3])
-	if len(hs[4:]) != int(handshakeLen) {
-		return nil
-	}
-	tlsVersion := uint16(hs[4])<<8 | uint16(hs[5])
-	if tlsVersion&tlsVersionBitmask != 0x0300 && tlsVersion != tls13 {
-		return nil
-	}
-	sessionIDLen := hs[38]
-	if len(hs) < handshakeHeaderLen+randomDataLen+sessionIDHeaderLen+int(sessionIDLen) {
-		return nil
-	}
-	cs := hs[handshakeHeaderLen+randomDataLen+sessionIDHeaderLen+int(sessionIDLen):]
-	if len(cs) < cipherSuiteHeaderLen {
-		return nil
-	}
-	csLen := uint16(cs[0])<<8 | uint16(cs[1])
-	if len(cs) < cipherSuiteHeaderLen+int(csLen)+compressMethodHeaderLen {
-		return nil
-	}
-	compressMethodLen := uint16(cs[cipherSuiteHeaderLen+int(csLen)])
-	if len(cs) < cipherSuiteHeaderLen+int(csLen)+compressMethodHeaderLen+int(compressMethodLen) {
-		return nil
-	}
-	currentIndex := cipherSuiteHeaderLen + int(csLen) + compressMethodHeaderLen + int(compressMethodLen)
-	serverName := indexTLSServerNameFromExtensions(cs[currentIndex:])
-	if serverName == nil {
-		return nil
-	}
-	serverName.Index += currentIndex
-	return serverName
-}
-
-func indexTLSServerNameFromExtensions(exs []byte) *myServerName {
-	if len(exs) == 0 {
-		return nil
-	}
-	if len(exs) < extensionsHeaderLen {
-		return nil
-	}
-	exsLen := uint16(exs[0])<<8 | uint16(exs[1])
-	exs = exs[extensionsHeaderLen:]
-	if len(exs) < int(exsLen) {
-		return nil
-	}
-	for currentIndex := extensionsHeaderLen; len(exs) > 0; {
-		if len(exs) < extensionHeaderLen {
-			return nil
-		}
-		exType := uint16(exs[0])<<8 | uint16(exs[1])
-		exLen := uint16(exs[2])<<8 | uint16(exs[3])
-		if len(exs) < extensionHeaderLen+int(exLen) {
-			return nil
-		}
-		sex := exs[extensionHeaderLen : extensionHeaderLen+int(exLen)]
-
-		switch exType {
-		case sniExtensionType:
-			if len(sex) < sniExtensionHeaderLen {
-				return nil
-			}
-			sniType := sex[2]
-			if sniType != sniNameDNSHostnameType {
-				return nil
-			}
-			sniLen := uint16(sex[3])<<8 | uint16(sex[4])
-			sex = sex[sniExtensionHeaderLen:]
-			return &myServerName{
-				Index:      currentIndex + extensionHeaderLen + sniExtensionHeaderLen,
-				Length:     int(sniLen),
-				ServerName: string(sex),
-			}
-		}
-		exs = exs[4+exLen:]
-		currentIndex += 4 + int(exLen)
-	}
-	return nil
-}

common/tlsfragment/wait_darwin.go

@@ -1,93 +0,0 @@
-package tf
-
-import (
-	"context"
-	"net"
-	"time"
-
-	"github.com/sagernet/sing/common/control"
-
-	"golang.org/x/sys/unix"
-)
-
-/*
-const tcpMaxNotifyAck = 10
-
-type tcpNotifyAckID uint32
-
-	type tcpNotifyAckComplete struct {
-		NotifyPending       uint32
-		NotifyCompleteCount uint32
-		NotifyCompleteID    [tcpMaxNotifyAck]tcpNotifyAckID
-	}
-
-var sizeOfTCPNotifyAckComplete = int(unsafe.Sizeof(tcpNotifyAckComplete{}))
-
-	func getsockoptTCPNotifyAckComplete(fd, level, opt int) (*tcpNotifyAckComplete, error) {
-		var value tcpNotifyAckComplete
-		vallen := uint32(sizeOfTCPNotifyAckComplete)
-		err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
-		return &value, err
-	}
-
-//go:linkname getsockopt golang.org/x/sys/unix.getsockopt
-func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *uint32) error
-
-	func waitAck(ctx context.Context, conn *net.TCPConn, _ time.Duration) error {
-		const TCP_NOTIFY_ACKNOWLEDGEMENT = 0x212
-		return control.Conn(conn, func(fd uintptr) error {
-			err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, TCP_NOTIFY_ACKNOWLEDGEMENT, 1)
-			if err != nil {
-				if errors.Is(err, unix.EINVAL) {
-					return waitAckFallback(ctx, conn, 0)
-				}
-				return err
-			}
-			for {
-				select {
-				case <-ctx.Done():
-					return ctx.Err()
-				default:
-				}
-				var ackComplete *tcpNotifyAckComplete
-				ackComplete, err = getsockoptTCPNotifyAckComplete(int(fd), unix.IPPROTO_TCP, TCP_NOTIFY_ACKNOWLEDGEMENT)
-				if err != nil {
-					return err
-				}
-				if ackComplete.NotifyPending == 0 {
-					return nil
-				}
-				time.Sleep(10 * time.Millisecond)
-			}
-		})
-	}
-*/
-
-func writeAndWaitAck(ctx context.Context, conn *net.TCPConn, payload []byte, fallbackDelay time.Duration) error {
-	_, err := conn.Write(payload)
-	if err != nil {
-		return err
-	}
-	return control.Conn(conn, func(fd uintptr) error {
-		start := time.Now()
-		for {
-			select {
-			case <-ctx.Done():
-				return ctx.Err()
-			default:
-			}
-			unacked, err := unix.GetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_NWRITE)
-			if err != nil {
-				return err
-			}
-			if unacked == 0 {
-				if time.Since(start) <= 20*time.Millisecond {
-					// under transparent proxy
-					time.Sleep(fallbackDelay)
-				}
-				return nil
-			}
-			time.Sleep(10 * time.Millisecond)
-		}
-	})
-}

common/tlsfragment/wait_linux.go

@@ -1,40 +0,0 @@
-package tf
-
-import (
-	"context"
-	"net"
-	"time"
-
-	"github.com/sagernet/sing/common/control"
-
-	"golang.org/x/sys/unix"
-)
-
-func writeAndWaitAck(ctx context.Context, conn *net.TCPConn, payload []byte, fallbackDelay time.Duration) error {
-	_, err := conn.Write(payload)
-	if err != nil {
-		return err
-	}
-	return control.Conn(conn, func(fd uintptr) error {
-		start := time.Now()
-		for {
-			select {
-			case <-ctx.Done():
-				return ctx.Err()
-			default:
-			}
-			tcpInfo, err := unix.GetsockoptTCPInfo(int(fd), unix.IPPROTO_TCP, unix.TCP_INFO)
-			if err != nil {
-				return err
-			}
-			if tcpInfo.Unacked == 0 {
-				if time.Since(start) <= 20*time.Millisecond {
-					// under transparent proxy
-					time.Sleep(fallbackDelay)
-				}
-				return nil
-			}
-			time.Sleep(10 * time.Millisecond)
-		}
-	})
-}

common/tlsfragment/wait_stub.go

@@ -1,14 +0,0 @@
-//go:build !(linux || darwin || windows)
-
-package tf
-
-import (
-	"context"
-	"net"
-	"time"
-)
-
-func writeAndWaitAck(ctx context.Context, conn *net.TCPConn, payload []byte, fallbackDelay time.Duration) error {
-	time.Sleep(fallbackDelay)
-	return nil
-}

common/tlsfragment/wait_windows.go

@@ -1,28 +0,0 @@
-package tf
-
-import (
-	"context"
-	"errors"
-	"net"
-	"time"
-
-	"github.com/sagernet/sing/common/winiphlpapi"
-
-	"golang.org/x/sys/windows"
-)
-
-func writeAndWaitAck(ctx context.Context, conn *net.TCPConn, payload []byte, fallbackDelay time.Duration) error {
-	start := time.Now()
-	err := winiphlpapi.WriteAndWaitAck(ctx, conn, payload)
-	if err != nil {
-		if errors.Is(err, windows.ERROR_ACCESS_DENIED) {
-			time.Sleep(fallbackDelay)
-			return nil
-		}
-		return err
-	}
-	if time.Since(start) <= 20*time.Millisecond {
-		time.Sleep(fallbackDelay)
-	}
-	return nil
-}

common/urltest/urltest.go

@@ -2,32 +2,32 @@ package urltest
 
 import (
 	"context"
-	"crypto/tls"
 	"net"
 	"net/http"
 	"net/url"
 	"sync"
 	"time"
 
-	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing/common"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/common/ntp"
 )
 
-var _ adapter.URLTestHistoryStorage = (*HistoryStorage)(nil)
+type History struct {
+	Time  time.Time `json:"time"`
+	Delay uint16    `json:"delay"`
+}
 
 type HistoryStorage struct {
 	access       sync.RWMutex
-	delayHistory map[string]*adapter.URLTestHistory
+	delayHistory map[string]*History
 	updateHook   chan<- struct{}
 }
 
 func NewHistoryStorage() *HistoryStorage {
 	return &HistoryStorage{
-		delayHistory: make(map[string]*adapter.URLTestHistory),
+		delayHistory: make(map[string]*History),
 	}
 }
 
@@ -35,7 +35,7 @@ func (s *HistoryStorage) SetHook(hook chan<- struct{}) {
 	s.updateHook = hook
 }
 
-func (s *HistoryStorage) LoadURLTestHistory(tag string) *adapter.URLTestHistory {
+func (s *HistoryStorage) LoadURLTestHistory(tag string) *History {
 	if s == nil {
 		return nil
 	}
@@ -51,7 +51,7 @@ func (s *HistoryStorage) DeleteURLTestHistory(tag string) {
 	s.notifyUpdated()
 }
 
-func (s *HistoryStorage) StoreURLTestHistory(tag string, history *adapter.URLTestHistory) {
+func (s *HistoryStorage) StoreURLTestHistory(tag string, history *History) {
 	s.access.Lock()
 	s.delayHistory[tag] = history
 	s.access.Unlock()
@@ -110,10 +110,6 @@ func URLTest(ctx context.Context, link string, detour N.Dialer) (t uint16, err e
 			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
 				return instance, nil
 			},
-			TLSClientConfig: &tls.Config{
-				Time:    ntp.TimeFuncFromContext(ctx),
-				RootCAs: adapter.RootPoolFromContext(ctx),
-			},
 		},
 		CheckRedirect: func(req *http.Request, via []*http.Request) error {
 			return http.ErrUseLastResponse

constant/certificate.go

@@ -1,7 +0,0 @@
-package constant
-
-const (
-	CertificateStoreSystem  = "system"
-	CertificateStoreMozilla = "mozilla"
-	CertificateStoreNone    = "none"
-)

constant/dns.go

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

constant/proxy.go

@@ -19,7 +19,6 @@ const (
 	TypeTor          = "tor"
 	TypeSSH          = "ssh"
 	TypeShadowTLS    = "shadowtls"
-	TypeAnyTLS       = "anytls"
 	TypeShadowsocksR = "shadowsocksr"
 	TypeVLESS        = "vless"
 	TypeTUIC         = "tuic"
@@ -78,8 +77,6 @@ func ProxyDisplayName(proxyType string) string {
 		return "TUIC"
 	case TypeHysteria2:
 		return "Hysteria2"
-	case TypeAnyTLS:
-		return "AnyTLS"
 	case TypeSelector:
 		return "Selector"
 	case TypeURLTest:

constant/rule.go

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

constant/timeout.go

@@ -16,7 +16,6 @@ const (
 	StopTimeout                = 5 * time.Second
 	FatalStopTimeout           = 10 * time.Second
 	FakeIPMetadataSaveInterval = 10 * time.Second
-	TLSFragmentFallbackDelay   = 500 * time.Millisecond
 )
 
 var PortProtocols = map[uint16]string{

dns/client.go

@@ -17,7 +17,7 @@ import (
 	"github.com/sagernet/sing/contrab/freelru"
 	"github.com/sagernet/sing/contrab/maphash"
 
-	dns "github.com/miekg/dns"
+	"github.com/miekg/dns"
 )
 
 var (
@@ -484,7 +484,7 @@ 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)
+		return nil, RCodeError(response.Rcode)
 	}
 	addresses := make([]netip.Addr, 0, len(response.Answer))
 	for _, rawAnswer := range response.Answer {
@@ -508,10 +508,10 @@ 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
 }
@@ -561,73 +561,3 @@ 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/rcode.go

@@ -1,17 +1,33 @@
 package dns
 
-import (
-	mDNS "github.com/miekg/dns"
-)
+import F "github.com/sagernet/sing/common/format"
 
 const (
-	RcodeFormatError RcodeError = mDNS.RcodeFormatError
-	RcodeNameError   RcodeError = mDNS.RcodeNameError
-	RcodeRefused     RcodeError = mDNS.RcodeRefused
+	RCodeSuccess        RCodeError = 0 // NoError
+	RCodeFormatError    RCodeError = 1 // FormErr
+	RCodeServerFailure  RCodeError = 2 // ServFail
+	RCodeNameError      RCodeError = 3 // NXDomain
+	RCodeNotImplemented RCodeError = 4 // NotImp
+	RCodeRefused        RCodeError = 5 // Refused
 )
 
-type RcodeError int
+type RCodeError uint16
 
-func (e RcodeError) Error() string {
-	return mDNS.RcodeToString[int(e)]
+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))
+	}
 }

dns/router.go

@@ -154,9 +154,6 @@ func (r *Router) matchDNS(ctx context.Context, allowFakeIP bool, ruleIndex int,
 				if isFakeIP && !allowFakeIP {
 					continue
 				}
-				if action.Strategy != C.DomainStrategyAsIS {
-					options.Strategy = action.Strategy
-				}
 				if isFakeIP || action.DisableCache {
 					options.DisableCache = true
 				}
@@ -174,11 +171,9 @@ 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 {
-					options.Strategy = action.Strategy
-				}
 				if action.DisableCache {
 					options.DisableCache = true
 				}
@@ -188,9 +183,9 @@ 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:
-				return nil, currentRule, currentRuleIndex
-			case *R.RuleActionPredefined:
+				r.logger.DebugContext(ctx, "match[", displayRuleIndex, "] => ", currentRule.Action())
 				return nil, currentRule, currentRuleIndex
 			}
 		}
@@ -251,8 +246,7 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 			ruleIndex = -1
 			for {
 				dnsCtx := adapter.OverrideContext(ctx)
-				dnsOptions := options
-				transport, rule, ruleIndex = r.matchDNS(ctx, true, ruleIndex, isAddressQuery(message), &dnsOptions)
+				transport, rule, ruleIndex = r.matchDNS(ctx, true, ruleIndex, isAddressQuery(message), &options)
 				if rule != nil {
 					switch action := rule.Action().(type) {
 					case *R.RuleActionReject:
@@ -262,21 +256,6 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 						case C.RuleActionRejectMethodDrop:
 							return nil, tun.ErrDrop
 						}
-					case *R.RuleActionPredefined:
-						return &mDNS.Msg{
-							MsgHdr: mDNS.MsgHdr{
-								Id:                 message.Id,
-								Response:           true,
-								Authoritative:      true,
-								RecursionDesired:   true,
-								RecursionAvailable: true,
-								Rcode:              action.Rcode,
-							},
-							Question: message.Question,
-							Answer:   action.Answer,
-							Ns:       action.Ns,
-							Extra:    action.Extra,
-						}, nil
 					}
 				}
 				var responseCheck func(responseAddrs []netip.Addr) bool
@@ -286,10 +265,10 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 						return rule.MatchAddressLimit(metadata)
 					}
 				}
-				if dnsOptions.Strategy == C.DomainStrategyAsIS {
-					dnsOptions.Strategy = r.defaultDomainStrategy
+				if options.Strategy == C.DomainStrategyAsIS {
+					options.Strategy = r.defaultDomainStrategy
 				}
-				response, err = r.client.Exchange(dnsCtx, transport, message, dnsOptions, responseCheck)
+				response, err = r.client.Exchange(dnsCtx, transport, message, options, responseCheck)
 				var rejected bool
 				if err != nil {
 					if errors.Is(err, ErrResponseRejectedCached) {
@@ -315,7 +294,7 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 		return nil, err
 	}
 	if r.dnsReverseMapping != nil && len(message.Question) > 0 && response != nil && len(response.Answer) > 0 {
-		if transport == nil || transport.Type() != C.DNSTypeFakeIP {
+		if transport.Type() != C.DNSTypeFakeIP {
 			for _, answer := range response.Answer {
 				switch record := answer.(type) {
 				case *mDNS.A:
@@ -346,20 +325,20 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 			}
 		} else if len(responseAddrs) == 0 {
 			r.logger.ErrorContext(ctx, "lookup failed for ", domain, ": empty result")
-			err = RcodeNameError
+			err = RCodeNameError
 		}
 	}
 	responseAddrs, cached = r.client.LookupCache(domain, options.Strategy)
 	if cached {
 		if len(responseAddrs) == 0 {
-			return nil, RcodeNameError
+			return nil, RCodeNameError
 		}
 		return responseAddrs, nil
 	}
 	r.logger.DebugContext(ctx, "lookup domain ", domain)
 	ctx, metadata := adapter.ExtendContext(ctx)
 	metadata.Destination = M.Socksaddr{}
-	metadata.Domain = FqdnToDomain(domain)
+	metadata.Domain = domain
 	if options.Transport != nil {
 		transport := options.Transport
 		if legacyTransport, isLegacy := transport.(adapter.LegacyDNSTransport); isLegacy {
@@ -393,20 +372,6 @@ 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
@@ -426,7 +391,6 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 			printResult()
 		}
 	}
-response:
 	printResult()
 	if len(responseAddrs) > 0 {
 		r.logger.InfoContext(ctx, "lookup succeed for ", domain, ": ", strings.Join(F.MapToString(responseAddrs), " "))

dns/transport/fakeip/fakeip.go

@@ -36,17 +36,6 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 	}, nil
 }
 
-func (t *Transport) Start(stage adapter.StartStage) error {
-	if stage != adapter.StartStateStart {
-		return nil
-	}
-	return t.store.Start()
-}
-
-func (t *Transport) Close() error {
-	return t.store.Close()
-}
-
 func (t *Transport) Reset() {
 }
 
@@ -55,7 +44,7 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 	if question.Qtype != mDNS.TypeA && question.Qtype != mDNS.TypeAAAA {
 		return nil, E.New("only IP queries are supported by fakeip")
 	}
-	address, err := t.store.Create(dns.FqdnToDomain(question.Name), question.Qtype == mDNS.TypeAAAA)
+	address, err := t.store.Create(question.Name, question.Qtype == mDNS.TypeAAAA)
 	if err != nil {
 		return nil, err
 	}

dns/transport/hosts/hosts.go

@@ -1,65 +0,0 @@
-package hosts
-
-import (
-	"context"
-	"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"
-)
-
-func RegisterTransport(registry *dns.TransportRegistry) {
-	dns.RegisterTransport[option.HostsDNSServerOptions](registry, C.DNSTypeHosts, NewTransport)
-}
-
-var _ adapter.DNSTransport = (*Transport)(nil)
-
-type Transport struct {
-	dns.TransportAdapter
-	files []*File
-}
-
-func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.HostsDNSServerOptions) (adapter.DNSTransport, error) {
-	var files []*File
-	if len(options.Path) == 0 {
-		files = append(files, NewFile(DefaultPath))
-	} else {
-		for _, path := range options.Path {
-			files = append(files, NewFile(filemanager.BasePath(ctx, os.ExpandEnv(path))))
-		}
-	}
-	return &Transport{
-		TransportAdapter: dns.NewTransportAdapter(C.DNSTypeHosts, tag, nil),
-		files:            files,
-	}, nil
-}
-
-func (t *Transport) Reset() {
-}
-
-func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	question := message.Question[0]
-	domain := dns.FqdnToDomain(question.Name)
-	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		for _, file := range t.files {
-			addresses := file.Lookup(domain)
-			if len(addresses) > 0 {
-				return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
-			}
-		}
-	}
-	return &mDNS.Msg{
-		MsgHdr: mDNS.MsgHdr{
-			Id:       message.Id,
-			Rcode:    mDNS.RcodeNameError,
-			Response: true,
-		},
-		Question: []mDNS.Question{question},
-	}, nil
-}

dns/transport/hosts/hosts_file.go

@@ -1,102 +0,0 @@
-package hosts
-
-import (
-	"bufio"
-	"errors"
-	"io"
-	"net/netip"
-	"os"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/miekg/dns"
-)
-
-const cacheMaxAge = 5 * time.Second
-
-type File struct {
-	path    string
-	access  sync.Mutex
-	byName  map[string][]netip.Addr
-	expire  time.Time
-	modTime time.Time
-	size    int64
-}
-
-func NewFile(path string) *File {
-	return &File{
-		path: path,
-	}
-}
-
-func (f *File) Lookup(name string) []netip.Addr {
-	f.access.Lock()
-	defer f.access.Unlock()
-	f.update()
-	return f.byName[name]
-}
-
-func (f *File) update() {
-	now := time.Now()
-	if now.Before(f.expire) && len(f.byName) > 0 {
-		return
-	}
-	stat, err := os.Stat(f.path)
-	if err != nil {
-		return
-	}
-	if f.modTime.Equal(stat.ModTime()) && f.size == stat.Size() {
-		f.expire = now.Add(cacheMaxAge)
-		return
-	}
-	byName := make(map[string][]netip.Addr)
-	file, err := os.Open(f.path)
-	if err != nil {
-		return
-	}
-	defer file.Close()
-	reader := bufio.NewReader(file)
-	var (
-		prefix   []byte
-		line     []byte
-		isPrefix bool
-	)
-	for {
-		line, isPrefix, err = reader.ReadLine()
-		if err != nil {
-			if errors.Is(err, io.EOF) {
-				break
-			}
-			return
-		}
-		if isPrefix {
-			prefix = append(prefix, line...)
-			continue
-		} else if len(prefix) > 0 {
-			line = append(prefix, line...)
-			prefix = nil
-		}
-		commentIndex := strings.IndexRune(string(line), '#')
-		if commentIndex != -1 {
-			line = line[:commentIndex]
-		}
-		fields := strings.Fields(string(line))
-		if len(fields) < 2 {
-			continue
-		}
-		var addr netip.Addr
-		addr, err = netip.ParseAddr(fields[0])
-		if err != nil {
-			continue
-		}
-		for index := 1; index < len(fields); index++ {
-			canonicalName := dns.CanonicalName(fields[index])
-			byName[canonicalName] = append(byName[canonicalName], addr)
-		}
-	}
-	f.expire = now.Add(cacheMaxAge)
-	f.modTime = stat.ModTime()
-	f.size = stat.Size()
-	f.byName = byName
-}

dns/transport/hosts/hosts_test.go

@@ -1,16 +0,0 @@
-package hosts_test
-
-import (
-	"net/netip"
-	"testing"
-
-	"github.com/sagernet/sing-box/dns/transport/hosts"
-
-	"github.com/stretchr/testify/require"
-)
-
-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."))
-}

dns/transport/hosts/hosts_unix.go

@@ -1,5 +0,0 @@
-//go:build !windows
-
-package hosts
-
-var DefaultPath = "/etc/hosts"

dns/transport/hosts/hosts_windows.go

@@ -1,17 +0,0 @@
-package hosts
-
-import (
-	"path/filepath"
-
-	"golang.org/x/sys/windows"
-)
-
-var DefaultPath string
-
-func init() {
-	systemDirectory, err := windows.GetSystemDirectory()
-	if err != nil {
-		systemDirectory = "C:\\Windows\\System32"
-	}
-	DefaultPath = filepath.Join(systemDirectory, "Drivers/etc/hosts")
-}

dns/transport/hosts/testdata/hosts

@@ -1,2 +0,0 @@
-127.0.0.1       localhost
-::1             localhost

dns/transport/https.go

@@ -62,20 +62,9 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 	if !common.Contains(tlsConfig.NextProtos(), "http/1.1") {
 		tlsConfig.SetNextProtos(append(tlsConfig.NextProtos(), "http/1.1"))
 	}
-	headers := options.Headers.Build()
-	host := headers.Get("Host")
-	if host != "" {
-		headers.Del("Host")
-	} else {
-		if tlsConfig.ServerName() != "" {
-			host = tlsConfig.ServerName()
-		} else {
-			host = options.Server
-		}
-	}
 	destinationURL := url.URL{
 		Scheme: "https",
-		Host:   host,
+		Host:   options.Host,
 	}
 	if destinationURL.Host == "" {
 		destinationURL.Host = options.Server
@@ -100,7 +89,7 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 		logger,
 		transportDialer,
 		&destinationURL,
-		headers,
+		options.Headers.Build(),
 		serverAddr,
 		tlsConfig,
 	), nil

dns/transport/local/local.go

@@ -2,15 +2,14 @@ package local
 
 import (
 	"context"
-	"math/rand"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/dns/transport/hosts"
 	"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"
@@ -19,12 +18,14 @@ 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
 }
 
@@ -34,8 +35,7 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 		return nil, err
 	}
 	return &Transport{
-		TransportAdapter: dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options),
-		hosts:            hosts.NewFile(hosts.DefaultPath),
+		TransportAdapter: dns.NewTransportAdapterWithLocalOptions(C.DNSTypeTCP, tag, options),
 		dialer:           transportDialer,
 	}, nil
 }
@@ -47,9 +47,9 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 	question := message.Question[0]
 	domain := dns.FqdnToDomain(question.Name)
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		addresses := t.hosts.Lookup(domain)
-		if len(addresses) > 0 {
-			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+		addressStrings, _ := lookupStaticHost(domain)
+		if len(addressStrings) > 0 {
+			return dns.FixedResponse(message.Id, question, common.Map(addressStrings, M.ParseAddr), C.DefaultDNSTTL), nil
 		}
 	}
 	systemConfig := getSystemDNSConfig()
@@ -62,7 +62,7 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 
 func (t *Transport) exchangeSingleRequest(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
 	var lastErr error
-	for _, fqdn := range systemConfig.nameList(domain) {
+	for _, fqdn := range nameList(systemConfig, domain) {
 		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
 		if err != nil {
 			lastErr = err
@@ -83,12 +83,6 @@ func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfi
 	results := make(chan queryResult)
 	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 {
-				err = E.New(fqdn, ": empty result")
-			}
-		}
 		select {
 		case results <- queryResult{response, err}:
 		case <-returned:
@@ -96,25 +90,14 @@ func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfi
 	}
 	queryCtx, queryCancel := context.WithCancel(ctx)
 	defer queryCancel()
-	var nameCount int
-	for _, fqdn := range systemConfig.nameList(domain) {
-		nameCount++
+	for _, fqdn := range nameList(systemConfig, domain) {
 		go startRacer(queryCtx, fqdn)
 	}
-	var errors []error
-	for {
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case result := <-results:
-			if result.err == nil {
-				return result.response, nil
-			}
-			errors = append(errors, result.err)
-			if len(errors) == nameCount {
-				return nil, E.Errors(errors...)
-			}
-		}
+	select {
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	case result := <-results:
+		return result.response, result.err
 	}
 }
 
@@ -135,13 +118,10 @@ func (t *Transport) tryOneName(ctx context.Context, config *dnsConfig, fqdn stri
 			return response, nil
 		}
 	}
-	return nil, E.Cause(lastErr, fqdn)
+	return nil, lastErr
 }
 
 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}
@@ -150,7 +130,7 @@ func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, questio
 	}
 	request := &mDNS.Msg{
 		MsgHdr: mDNS.MsgHdr{
-			Id:                uint16(rand.Uint32()),
+			Id:                uint16(randInt()),
 			RecursionDesired:  true,
 			AuthenticatedData: ad,
 		},

dns/transport/local/local_badlinkname.go

@@ -0,0 +1,19 @@
+//go:build badlinkname
+
+package local
+
+import (
+	_ "unsafe"
+)
+
+//go:linkname getSystemDNSConfig net.getSystemDNSConfig
+func getSystemDNSConfig() *dnsConfig
+
+//go:linkname nameList net.(*dnsConfig).nameList
+func nameList(c *dnsConfig, name string) []string
+
+//go:linkname lookupStaticHost net.lookupStaticHost
+func lookupStaticHost(host string) ([]string, string)
+
+//go:linkname splitHostZone net.splitHostZone
+func splitHostZone(s string) (host, zone string)

dns/transport/local/local_fallback.go

@@ -1,205 +0,0 @@
-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/local_linkname.go

@@ -0,0 +1,44 @@
+package local
+
+import (
+	"sync/atomic"
+	"time"
+	_ "unsafe"
+)
+
+const (
+	// net.maxDNSPacketSize
+	maxDNSPacketSize = 1232
+)
+
+type dnsConfig struct {
+	servers       []string      // server addresses (in host:port form) to use
+	search        []string      // rooted suffixes to append to local name
+	ndots         int           // number of dots in name to trigger absolute lookup
+	timeout       time.Duration // wait before giving up on a query, including retries
+	attempts      int           // lost packets before giving up on server
+	rotate        bool          // round robin among servers
+	unknownOpt    bool          // anything unknown was encountered
+	lookup        []string      // OpenBSD top-level database "lookup" order
+	err           error         // any error that occurs during open of resolv.conf
+	mtime         time.Time     // time of resolv.conf modification
+	soffset       uint32        // used by serverOffset
+	singleRequest bool          // use sequential A and AAAA queries instead of parallel queries
+	useTCP        bool          // force usage of TCP for DNS resolutions
+	trustAD       bool          // add AD flag to queries
+	noReload      bool          // do not check for config file updates
+}
+
+func (c *dnsConfig) serverOffset() uint32 {
+	if c.rotate {
+		return atomic.AddUint32(&c.soffset, 1) - 1 // return 0 to start
+	}
+	return 0
+}
+
+//go:linkname runtime_rand runtime.rand
+func runtime_rand() uint64
+
+func randInt() int {
+	return int(uint(runtime_rand()) >> 1) // clear sign bit
+}

dns/transport/local/local_notbadlinkname.go

@@ -0,0 +1,19 @@
+//go:build !badlinkname
+
+package local
+
+func getSystemDNSConfig() *dnsConfig {
+	panic("stub")
+}
+
+func nameList(c *dnsConfig, name string) []string {
+	panic("stub")
+}
+
+func lookupStaticHost(host string) ([]string, string) {
+	panic("stub")
+}
+
+func splitHostZone(s string) (host, zone string) {
+	panic("stub")
+}

dns/transport/local/resolv.go

@@ -1,146 +0,0 @@
-package local
-
-import (
-	"os"
-	"runtime"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-const (
-	// net.maxDNSPacketSize
-	maxDNSPacketSize = 1232
-)
-
-type resolverConfig struct {
-	initOnce    sync.Once
-	ch          chan struct{}
-	lastChecked time.Time
-	dnsConfig   atomic.Pointer[dnsConfig]
-}
-
-var resolvConf resolverConfig
-
-func getSystemDNSConfig() *dnsConfig {
-	resolvConf.tryUpdate("/etc/resolv.conf")
-	return resolvConf.dnsConfig.Load()
-}
-
-func (conf *resolverConfig) init() {
-	conf.dnsConfig.Store(dnsReadConfig("/etc/resolv.conf"))
-	conf.lastChecked = time.Now()
-	conf.ch = make(chan struct{}, 1)
-}
-
-func (conf *resolverConfig) tryUpdate(name string) {
-	conf.initOnce.Do(conf.init)
-
-	if conf.dnsConfig.Load().noReload {
-		return
-	}
-	if !conf.tryAcquireSema() {
-		return
-	}
-	defer conf.releaseSema()
-
-	now := time.Now()
-	if conf.lastChecked.After(now.Add(-5 * time.Second)) {
-		return
-	}
-	conf.lastChecked = now
-	if runtime.GOOS != "windows" {
-		var mtime time.Time
-		if fi, err := os.Stat(name); err == nil {
-			mtime = fi.ModTime()
-		}
-		if mtime.Equal(conf.dnsConfig.Load().mtime) {
-			return
-		}
-	}
-	dnsConf := dnsReadConfig(name)
-	conf.dnsConfig.Store(dnsConf)
-}
-
-func (conf *resolverConfig) tryAcquireSema() bool {
-	select {
-	case conf.ch <- struct{}{}:
-		return true
-	default:
-		return false
-	}
-}
-
-func (conf *resolverConfig) releaseSema() {
-	<-conf.ch
-}
-
-type dnsConfig struct {
-	servers       []string
-	search        []string
-	ndots         int
-	timeout       time.Duration
-	attempts      int
-	rotate        bool
-	unknownOpt    bool
-	lookup        []string
-	err           error
-	mtime         time.Time
-	soffset       uint32
-	singleRequest bool
-	useTCP        bool
-	trustAD       bool
-	noReload      bool
-}
-
-func (c *dnsConfig) serverOffset() uint32 {
-	if c.rotate {
-		return atomic.AddUint32(&c.soffset, 1) - 1 // return 0 to start
-	}
-	return 0
-}
-
-func (conf *dnsConfig) nameList(name string) []string {
-	l := len(name)
-	rooted := l > 0 && name[l-1] == '.'
-	if l > 254 || l == 254 && !rooted {
-		return nil
-	}
-
-	if rooted {
-		if avoidDNS(name) {
-			return nil
-		}
-		return []string{name}
-	}
-
-	hasNdots := strings.Count(name, ".") >= conf.ndots
-	name += "."
-	// l++
-
-	names := make([]string, 0, 1+len(conf.search))
-	if hasNdots && !avoidDNS(name) {
-		names = append(names, name)
-	}
-	for _, suffix := range conf.search {
-		fqdn := name + suffix
-		if !avoidDNS(fqdn) && len(fqdn) <= 254 {
-			names = append(names, fqdn)
-		}
-	}
-	if !hasNdots && !avoidDNS(name) {
-		names = append(names, name)
-	}
-	return names
-}
-
-func avoidDNS(name string) bool {
-	if name == "" {
-		return true
-	}
-	if name[len(name)-1] == '.' {
-		name = name[:len(name)-1]
-	}
-	return strings.HasSuffix(name, ".onion")
-}

dns/transport/local/resolv_darwin_cgo.go

@@ -1,53 +0,0 @@
-//go:build darwin && cgo
-
-package local
-
-/*
-#include <stdlib.h>
-#include <stdio.h>
-#include <resolv.h>
-#include <arpa/inet.h>
-*/
-import "C"
-
-import (
-	"time"
-
-	E "github.com/sagernet/sing/common/exceptions"
-
-	"github.com/miekg/dns"
-)
-
-func dnsReadConfig(_ 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

@@ -1,23 +0,0 @@
-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

@@ -1,155 +0,0 @@
-//go:build !windows && !(darwin && cgo)
-
-package local
-
-import (
-	"bufio"
-	"net"
-	"net/netip"
-	"os"
-	"strings"
-	"time"
-
-	"github.com/miekg/dns"
-)
-
-func dnsReadConfig(name string) *dnsConfig {
-	conf := &dnsConfig{
-		ndots:    1,
-		timeout:  5 * time.Second,
-		attempts: 2,
-	}
-	file, err := os.Open(name)
-	if err != nil {
-		conf.servers = defaultNS
-		conf.search = dnsDefaultSearch()
-		conf.err = err
-		return conf
-	}
-	defer file.Close()
-	fi, err := file.Stat()
-	if err == nil {
-		conf.mtime = fi.ModTime()
-	} else {
-		conf.servers = defaultNS
-		conf.search = dnsDefaultSearch()
-		conf.err = err
-		return conf
-	}
-	reader := bufio.NewReader(file)
-	var (
-		prefix   []byte
-		line     []byte
-		isPrefix bool
-	)
-	for {
-		line, isPrefix, err = reader.ReadLine()
-		if err != nil {
-			break
-		}
-		if isPrefix {
-			prefix = append(prefix, line...)
-			continue
-		} else if len(prefix) > 0 {
-			line = append(prefix, line...)
-			prefix = nil
-		}
-		if len(line) > 0 && (line[0] == ';' || line[0] == '#') {
-			continue
-		}
-		f := strings.Fields(string(line))
-		if len(f) < 1 {
-			continue
-		}
-		switch f[0] {
-		case "nameserver":
-			if len(f) > 1 && len(conf.servers) < 3 {
-				if _, err := netip.ParseAddr(f[1]); err == nil {
-					conf.servers = append(conf.servers, net.JoinHostPort(f[1], "53"))
-				}
-			}
-		case "domain":
-			if len(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 := dns.Fqdn(f[i])
-				if name == "." {
-					continue
-				}
-				conf.search = append(conf.search, name)
-			}
-
-		case "options":
-			for _, s := range f[1:] {
-				switch {
-				case strings.HasPrefix(s, "ndots:"):
-					n, _, _ := dtoi(s[6:])
-					if n < 0 {
-						n = 0
-					} else if n > 15 {
-						n = 15
-					}
-					conf.ndots = n
-				case strings.HasPrefix(s, "timeout:"):
-					n, _, _ := dtoi(s[8:])
-					if n < 1 {
-						n = 1
-					}
-					conf.timeout = time.Duration(n) * time.Second
-				case strings.HasPrefix(s, "attempts:"):
-					n, _, _ := dtoi(s[9:])
-					if n < 1 {
-						n = 1
-					}
-					conf.attempts = n
-				case s == "rotate":
-					conf.rotate = true
-				case s == "single-request" || s == "single-request-reopen":
-					conf.singleRequest = true
-				case s == "use-vc" || s == "usevc" || s == "tcp":
-					conf.useTCP = true
-				case s == "trust-ad":
-					conf.trustAD = true
-				case s == "edns0":
-				case s == "no-reload":
-					conf.noReload = true
-				default:
-					conf.unknownOpt = true
-				}
-			}
-
-		case "lookup":
-			conf.lookup = f[1:]
-
-		default:
-			conf.unknownOpt = true
-		}
-	}
-	if len(conf.servers) == 0 {
-		conf.servers = defaultNS
-	}
-	if len(conf.search) == 0 {
-		conf.search = dnsDefaultSearch()
-	}
-	return conf
-}
-
-const big = 0xFFFFFF
-
-func dtoi(s string) (n int, i int, ok bool) {
-	n = 0
-	for i = 0; i < len(s) && '0' <= s[i] && s[i] <= '9'; i++ {
-		n = n*10 + int(s[i]-'0')
-		if n >= big {
-			return big, i, false
-		}
-	}
-	if i == 0 {
-		return 0, 0, false
-	}
-	return n, i, true
-}

dns/transport/local/resolv_windows.go

@@ -1,97 +0,0 @@
-package local
-
-import (
-	"net"
-	"net/netip"
-	"os"
-	"syscall"
-	"time"
-	"unsafe"
-
-	"golang.org/x/sys/windows"
-)
-
-func dnsReadConfig(_ string) *dnsConfig {
-	conf := &dnsConfig{
-		ndots:    1,
-		timeout:  5 * time.Second,
-		attempts: 2,
-	}
-	defer func() {
-		if len(conf.servers) == 0 {
-			conf.servers = defaultNS
-		}
-	}()
-	aas, 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 {
-			continue
-		}
-
-		// Only take interfaces which have at least one gateway
-		if aa.FirstGatewayAddress == nil {
-			continue
-		}
-
-		for dns := aa.FirstDnsServerAddress; dns != nil; dns = dns.Next {
-			sa, err := dns.Address.Sockaddr.Sockaddr()
-			if err != nil {
-				continue
-			}
-			var ip netip.Addr
-			switch sa := sa.(type) {
-			case *syscall.SockaddrInet4:
-				ip = netip.AddrFrom4([4]byte{sa.Addr[0], sa.Addr[1], sa.Addr[2], sa.Addr[3]})
-			case *syscall.SockaddrInet6:
-				var addr16 [16]byte
-				copy(addr16[:], sa.Addr[:])
-				if addr16[0] == 0xfe && addr16[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
-					// deprecated since 2004, see
-					// https://datatracker.ietf.org/doc/html/rfc3879
-					continue
-				}
-				ip = netip.AddrFrom16(addr16)
-			default:
-				// Unexpected type.
-				continue
-			}
-			conf.servers = append(conf.servers, net.JoinHostPort(ip.String(), "53"))
-		}
-	}
-	return conf
-}
-
-func adapterAddresses() ([]*windows.IpAdapterAddresses, error) {
-	var b []byte
-	l := uint32(15000) // recommended initial size
-	for {
-		b = make([]byte, l)
-		const flags = windows.GAA_FLAG_INCLUDE_PREFIX | windows.GAA_FLAG_INCLUDE_GATEWAYS
-		err := windows.GetAdaptersAddresses(syscall.AF_UNSPEC, flags, 0, (*windows.IpAdapterAddresses)(unsafe.Pointer(&b[0])), &l)
-		if err == nil {
-			if l == 0 {
-				return nil, nil
-			}
-			break
-		}
-		if err.(syscall.Errno) != syscall.ERROR_BUFFER_OVERFLOW {
-			return nil, os.NewSyscallError("getadaptersaddresses", err)
-		}
-		if l <= uint32(len(b)) {
-			return nil, os.NewSyscallError("getadaptersaddresses", err)
-		}
-	}
-	var aas []*windows.IpAdapterAddresses
-	for aa := (*windows.IpAdapterAddresses)(unsafe.Pointer(&b[0])); aa != nil; aa = aa.Next {
-		aas = append(aas, aa)
-	}
-	return aas, nil
-}

dns/transport/predefined.go

@@ -0,0 +1,82 @@
+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
+				return &copyAnswer, nil
+			}
+		}
+	}
+	return nil, dns.RCodeNameError
+}

dns/transport/quic/http3.go

@@ -60,20 +60,9 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	headers := options.Headers.Build()
-	host := headers.Get("Host")
-	if host != "" {
-		headers.Del("Host")
-	} else {
-		if tlsConfig.ServerName() != "" {
-			host = tlsConfig.ServerName()
-		} else {
-			host = options.Server
-		}
-	}
 	destinationURL := url.URL{
-		Scheme: "https",
-		Host:   host,
+		Scheme: "HTTP3",
+		Host:   options.Host,
 	}
 	if destinationURL.Host == "" {
 		destinationURL.Host = options.Server
@@ -98,7 +87,7 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 		logger:           logger,
 		dialer:           transportDialer,
 		destination:      &destinationURL,
-		headers:          headers,
+		headers:          options.Headers.Build(),
 		transport: &http3.Transport{
 			Dial: func(ctx context.Context, addr string, tlsCfg *tls.STDConfig, cfg *quic.Config) (quic.EarlyConnection, error) {
 				destinationAddr := M.ParseSocksaddr(addr)

dns/transport/udp.go

@@ -144,13 +144,6 @@ func (t *UDPTransport) exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.M
 func (t *UDPTransport) open(ctx context.Context) (*dnsConnection, error) {
 	t.access.Lock()
 	defer t.access.Unlock()
-	if t.conn != nil {
-		select {
-		case <-t.conn.done:
-		default:
-			return t.conn, nil
-		}
-	}
 	conn, err := t.dialer.DialContext(ctx, N.NetworkUDP, t.serverAddr)
 	if err != nil {
 		return nil, err
@@ -161,7 +154,6 @@ func (t *UDPTransport) open(ctx context.Context) (*dnsConnection, error) {
 		callbacks: make(map[uint16]*dnsCallback),
 	}
 	go t.recvLoop(dnsConn)
-	t.conn = dnsConn
 	return dnsConn, nil
 }
 
@@ -209,6 +201,8 @@ type dnsConnection struct {
 }
 
 func (c *dnsConnection) Close(err error) {
+	c.access.Lock()
+	defer c.access.Unlock()
 	c.closeOnce.Do(func() {
 		close(c.done)
 		c.err = err

dns/transport_adapter.go

@@ -27,14 +27,9 @@ func NewTransportAdapter(transportType string, transportTag string, dependencies
 }
 
 func NewTransportAdapterWithLocalOptions(transportType string, transportTag string, localOptions option.LocalDNSServerOptions) TransportAdapter {
-	var dependencies []string
-	if localOptions.DomainResolver != nil && localOptions.DomainResolver.Server != "" {
-		dependencies = append(dependencies, localOptions.DomainResolver.Server)
-	}
 	return TransportAdapter{
 		transportType: transportType,
 		transportTag:  transportTag,
-		dependencies:  dependencies,
 		strategy:      C.DomainStrategy(localOptions.LegacyStrategy),
 		clientSubnet:  localOptions.LegacyClientSubnet,
 	}
@@ -42,11 +37,8 @@ func NewTransportAdapterWithLocalOptions(transportType string, transportTag stri
 
 func NewTransportAdapterWithRemoteOptions(transportType string, transportTag string, remoteOptions option.RemoteDNSServerOptions) TransportAdapter {
 	var dependencies []string
-	if remoteOptions.DomainResolver != nil && remoteOptions.DomainResolver.Server != "" {
-		dependencies = append(dependencies, remoteOptions.DomainResolver.Server)
-	}
-	if remoteOptions.LegacyAddressResolver != "" {
-		dependencies = append(dependencies, remoteOptions.LegacyAddressResolver)
+	if remoteOptions.AddressResolver != "" {
+		dependencies = []string{remoteOptions.AddressResolver}
 	}
 	return TransportAdapter{
 		transportType: transportType,

dns/transport_dialer.go

@@ -19,39 +19,37 @@ func NewLocalDialer(ctx context.Context, options option.LocalDNSServerOptions) (
 	if options.LegacyDefaultDialer {
 		return dialer.NewDefaultOutbound(ctx), nil
 	} else {
-		return dialer.NewWithOptions(dialer.Options{
-			Context:        ctx,
-			Options:        options.DialerOptions,
-			DirectResolver: true,
-		})
+		return dialer.New(ctx, options.DialerOptions, false)
 	}
 }
 
 func NewRemoteDialer(ctx context.Context, options option.RemoteDNSServerOptions) (N.Dialer, error) {
+	var (
+		transportDialer N.Dialer
+		err             error
+	)
 	if options.LegacyDefaultDialer {
-		transportDialer := dialer.NewDefaultOutbound(ctx)
-		if options.LegacyAddressResolver != "" {
-			transport := service.FromContext[adapter.DNSTransportManager](ctx)
-			resolverTransport, loaded := transport.Transport(options.LegacyAddressResolver)
-			if !loaded {
-				return nil, E.New("address resolver not found: ", options.LegacyAddressResolver)
-			}
-			transportDialer = newTransportDialer(transportDialer, service.FromContext[adapter.DNSRouter](ctx), resolverTransport, C.DomainStrategy(options.LegacyAddressStrategy), time.Duration(options.LegacyAddressFallbackDelay))
-		} else if options.ServerIsDomain() {
-			return nil, E.New("missing address resolver for server: ", options.Server)
-		}
-		return transportDialer, nil
+		transportDialer = dialer.NewDefaultOutbound(ctx)
 	} else {
-		return dialer.NewWithOptions(dialer.Options{
-			Context:        ctx,
-			Options:        options.DialerOptions,
-			RemoteIsDomain: options.ServerIsDomain(),
-			DirectResolver: true,
-		})
+		transportDialer, err = dialer.New(ctx, options.DialerOptions, options.ServerIsDomain())
 	}
+	if err != nil {
+		return nil, err
+	}
+	if options.AddressResolver != "" {
+		transport := service.FromContext[adapter.DNSTransportManager](ctx)
+		resolverTransport, loaded := transport.Transport(options.AddressResolver)
+		if !loaded {
+			return nil, E.New("address resolver not found: ", options.AddressResolver)
+		}
+		transportDialer = NewTransportDialer(transportDialer, service.FromContext[adapter.DNSRouter](ctx), resolverTransport, C.DomainStrategy(options.AddressStrategy), time.Duration(options.AddressFallbackDelay))
+	} else if options.ServerIsDomain() {
+		return nil, E.New("missing address resolver for server: ", options.Server)
+	}
+	return transportDialer, nil
 }
 
-type legacyTransportDialer struct {
+type TransportDialer struct {
 	dialer        N.Dialer
 	dnsRouter     adapter.DNSRouter
 	transport     adapter.DNSTransport
@@ -59,8 +57,8 @@ type legacyTransportDialer struct {
 	fallbackDelay time.Duration
 }
 
-func newTransportDialer(dialer N.Dialer, dnsRouter adapter.DNSRouter, transport adapter.DNSTransport, strategy C.DomainStrategy, fallbackDelay time.Duration) *legacyTransportDialer {
-	return &legacyTransportDialer{
+func NewTransportDialer(dialer N.Dialer, dnsRouter adapter.DNSRouter, transport adapter.DNSTransport, strategy C.DomainStrategy, fallbackDelay time.Duration) *TransportDialer {
+	return &TransportDialer{
 		dialer,
 		dnsRouter,
 		transport,
@@ -69,7 +67,7 @@ func newTransportDialer(dialer N.Dialer, dnsRouter adapter.DNSRouter, transport
 	}
 }
 
-func (d *legacyTransportDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+func (d *TransportDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	if destination.IsIP() {
 		return d.dialer.DialContext(ctx, network, destination)
 	}
@@ -83,7 +81,7 @@ func (d *legacyTransportDialer) DialContext(ctx context.Context, network string,
 	return N.DialParallel(ctx, d.dialer, network, destination, addresses, d.strategy == C.DomainStrategyPreferIPv6, d.fallbackDelay)
 }
 
-func (d *legacyTransportDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+func (d *TransportDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
 	if destination.IsIP() {
 		return d.dialer.ListenPacket(ctx, destination)
 	}
@@ -98,6 +96,6 @@ func (d *legacyTransportDialer) ListenPacket(ctx context.Context, destination M.
 	return conn, err
 }
 
-func (d *legacyTransportDialer) Upstream() any {
+func (d *TransportDialer) Upstream() any {
 	return d.dialer
 }

dns/transport_manager.go

@@ -56,12 +56,12 @@ func (m *TransportManager) Start(stage adapter.StartStage) error {
 	}
 	m.started = true
 	m.stage = stage
-	transports := m.transports
+	outbounds := m.transports
 	m.access.Unlock()
 	if stage == adapter.StartStateStart {
 		return m.startTransports(m.transports)
 	} else {
-		for _, outbound := range transports {
+		for _, outbound := range outbounds {
 			err := adapter.LegacyStart(outbound, stage)
 			if err != nil {
 				return E.Cause(err, stage, " dns/", outbound.Type(), "[", outbound.Tag(), "]")

docs/changelog.md

@@ -2,260 +2,10 @@
 icon: material/alert-decagram
 ---
 
-#### 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
+#### 1.11.0-beta.23
 
 * 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
-
-_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:
-
-* Introducing rule actions **1**
-* Improve tun compatibility **3**
-* Merge route options to route actions **4**
-* Add `network_type`, `network_is_expensive` and `network_is_constrainted` rule items **5**
-* Add multi network dialing **6**
-* Add `cache_capacity` DNS option **7**
-* Add `override_address` and `override_port` route options **8**
-* Upgrade WireGuard outbound to endpoint **9**
-* Add UDP GSO support for WireGuard
-* Make GSO adaptive **10**
-* Add UDP timeout route option **11**
-* Add more masquerade options for hysteria2 **12**
-* Add `rule-set merge` command
-* Add port hopping support for Hysteria2 **13**
-* Hysteria2 `ignore_client_bandwidth` behavior update **14**
-
-**1**:
-
-New rule actions replace legacy inbound fields and special outbound fields,
-and can be used for pre-matching **2**.
-
-See [Rule](/configuration/route/rule/),
-[Rule Action](/configuration/route/rule_action/),
-[DNS Rule](/configuration/dns/rule/) and
-[DNS Rule Action](/configuration/dns/rule_action/).
-
-For migration, see
-[Migrate legacy special outbounds to rule actions](/migration/#migrate-legacy-special-outbounds-to-rule-actions),
-[Migrate legacy inbound fields to rule actions](/migration/#migrate-legacy-inbound-fields-to-rule-actions)
-and [Migrate legacy DNS route options to rule actions](/migration/#migrate-legacy-dns-route-options-to-rule-actions).
-
-**2**:
-
-Similar to Surge's pre-matching.
-
-Specifically, new rule actions allow you to reject connections with
-TCP RST (for TCP connections) and ICMP port unreachable (for UDP packets)
-before connection established to improve tun's compatibility.
-
-See [Rule Action](/configuration/route/rule_action/).
-
-**3**:
-
-When `gvisor` tun stack is enabled, even if the request passes routing,
-if the outbound connection establishment fails,
-the connection still does not need to be established and a TCP RST is replied.
-
-**4**:
-
-Route options in DNS route actions will no longer be considered deprecated,
-see [DNS Route Action](/configuration/dns/rule_action/).
-
-Also, now `udp_disable_domain_unmapping` and `udp_connect` can also be configured in route action,
-see [Route Action](/configuration/route/rule_action/).
-
-**5**:
-
-When using in graphical clients, new routing rule items allow you to match on
-network type (WIFI, cellular, etc.), whether the network is expensive, and whether Low Data Mode is enabled.
-
-See [Route Rule](/configuration/route/rule/), [DNS Route Rule](/configuration/dns/rule/)
-and [Headless Rule](/configuration/rule-set/headless-rule/).
-
-**6**:
-
-Similar to Surge's strategy.
-
-New options allow you to connect using multiple network interfaces,
-prefer or only use one type of interface,
-and configure a timeout to fallback to other interfaces.
-
-See [Dial Fields](/configuration/shared/dial/#network_strategy),
-[Rule Action](/configuration/route/rule_action/#network_strategy)
-and [Route](/configuration/route/#default_network_strategy).
-
-**7**:
-
-See [DNS](/configuration/dns/#cache_capacity).
-
-**8**:
-
-See [Rule Action](/configuration/route/#override_address) and
-[Migrate destination override fields to route options](/migration/#migrate-destination-override-fields-to-route-options).
-
-**9**:
-
-The new WireGuard endpoint combines inbound and outbound capabilities,
-and the old outbound will be removed in sing-box 1.13.0.
-
-See [Endpoint](/configuration/endpoint/), [WireGuard Endpoint](/configuration/endpoint/wireguard/)
-and [Migrate WireGuard outbound fields to route options](/migration/#migrate-wireguard-outbound-to-endpoint).
-
-**10**:
-
-For WireGuard outbound and endpoint, GSO will be automatically enabled when available,
-see [WireGuard Outbound](/configuration/outbound/wireguard/#gso).
-
-For TUN, GSO has been removed,
-see [Deprecated](/deprecated/#gso-option-in-tun).
-
-**11**:
-
-See [Rule Action](/configuration/route/rule_action/#udp_timeout).
-
-**12**:
-
-See [Hysteria2](/configuration/inbound/hysteria2/#masquerade).
-
-**13**:
-
-See [Hysteria2](/configuration/outbound/hysteria2/).
-
-**14**:
-
-When `up_mbps` and `down_mbps` are set, `ignore_client_bandwidth` instead denies clients from using BBR CC.
-
 ### 1.10.7
 
 * Fixes and improvements

docs/configuration/certificate/index.md

@@ -1,54 +0,0 @@
----
-icon: material/new-box
----
-
-!!! question "Since sing-box 1.12.0"
-
-# Certificate
-
-### Structure
-
-```json
-{
-  "store": "",
-  "certificate": [],
-  "certificate_path": [],
-  "certificate_directory_path": []
-}
-```
-
-!!! note ""
-
-    You can ignore the JSON Array [] tag when the content is only one item
-
-### Fields
-
-#### store
-
-The default X509 trusted CA certificate list.
-
-| Type               | Description                                                                                                   |
-|--------------------|---------------------------------------------------------------------------------------------------------------|
-| `system` (default) | System trusted CA certificates                                                                                |
-| `mozilla`          | [Mozilla Included List](https://wiki.mozilla.org/CA/Included_Certificates) with China CA certificates removed |
-| `none`             | Empty list                                                                                                    |
-
-#### certificate
-
-The certificate line array to trust, in PEM format.
-
-#### certificate_path
-
-!!! note ""
-
-    Will be automatically reloaded if file modified.
-
-The paths to certificates to trust, in PEM format.
-
-#### certificate_directory_path
-
-!!! note ""
-
-    Will be automatically reloaded if file modified.
-
-The directory path to search for certificates to trust,in PEM format.

docs/configuration/dns/fakeip.md

@@ -1,11 +1,3 @@
----
-icon: material/delete-clock
----
-
-!!! failure "Deprecated in sing-box 1.12.0"
-
-    Legacy fake-ip configuration is deprecated and will be removed in sing-box 1.14.0, check [Migration](/migration/#migrate-to-new-dns-servers).
-
 ### Structure
 
 ```json

docs/configuration/dns/fakeip.zh.md

@@ -1,11 +1,3 @@
----
-icon: material/delete-clock
----
-
-!!! failure "已在 sing-box 1.12.0 废弃"
-
-    旧的 fake-ip 配置已废弃且将在 sing-box 1.14.0 中被移除，参阅 [迁移指南](/migration/#migrate-to-new-dns-servers)。
-
 ### 结构
 
 ```json

docs/configuration/dns/index.md

@@ -49,6 +49,8 @@ Default domain strategy for resolving the domain names.
 
 One of `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`.
 
+Take no effect if `server.strategy` is set.
+
 #### disable_cache
 
 Disable dns cache.

docs/configuration/dns/index.zh.md

@@ -48,6 +48,8 @@ icon: material/new-box
 
 可选值: `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`。
 
+如果设置了 `server.strategy`，则不生效。
+
 #### disable_cache
 
 禁用 DNS 缓存。

docs/configuration/dns/rule.md

@@ -1,11 +1,7 @@
 ---
-icon: material/alert-decagram
+icon: material/new-box
 ---
 
-!!! quote "Changes in sing-box 1.12.0"
-
-    :material-delete-clock: [outbound](#outbound)
-
 !!! quote "Changes in sing-box 1.11.0"
 
     :material-plus: [action](#action)  
@@ -399,10 +395,6 @@ Invert match result.
 
 #### outbound
 
-!!! failure "Deprecated in sing-box 1.12.0"
-
-    `outbound` rule items are deprecated and will be removed in sing-box 1.14.0, check [Migration](/migration/#migrate-outbound-dns-rule-items-to-domain-resolver). 
-
 Match outbound.
 
 `any` can be used as a value to match any outbound.

docs/configuration/dns/rule.zh.md

@@ -1,11 +1,7 @@
 ---
-icon: material/alert-decagram
+icon: material/new-box
 ---
 
-!!! quote "sing-box 1.12.0 中的更改"
-
-    :material-delete-clock: [outbound](#outbound)
-
 !!! quote "sing-box 1.11.0 中的更改"
 
     :material-plus: [action](#action)  
@@ -399,10 +395,6 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 #### outbound
 
-!!! failure "已在 sing-box 1.12.0 废弃"
-
-    `outbound` 规则项已废弃且将在 sing-box 1.14.0 中被移除，参阅 [迁移指南](/migration/#migrate-outbound-dns-rule-items-to-domain-resolver)。
-
 匹配出站。
 
 `any` 可作为值用于匹配任意出站。

docs/configuration/dns/rule_action.md

@@ -2,11 +2,6 @@
 icon: material/new-box
 ---
 
-!!! quote "Changes in sing-box 1.12.0"
-
-    :material-plus: [strategy](#strategy)  
-    :material-plus: [predefined](#predefined)
-
 !!! question "Since sing-box 1.11.0"
 
 ### route
@@ -15,9 +10,8 @@ icon: material/new-box
 {
   "action": "route",  // default
   "server": "",
-  "strategy": "",
   "disable_cache": false,
-  "rewrite_ttl": null,
+  "rewrite_ttl": 0,
   "client_subnet": null
 }
 ```
@@ -30,14 +24,6 @@ icon: material/new-box
 
 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`.
-
 #### disable_cache
 
 Disable cache and save cache in this query.
@@ -52,7 +38,7 @@ 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`.
+Will overrides `dns.client_subnet` and `servers.[].client_subnet`.
 
 ### route-options
 
@@ -72,7 +58,7 @@ Will overrides `dns.client_subnet`.
 ```json
 {
   "action": "reject",
-  "method": "",
+  "method": "default", // default
   "no_drop": false
 }
 ```
@@ -84,61 +70,8 @@ Will overrides `dns.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

@@ -2,23 +2,18 @@
 icon: material/new-box
 ---
 
-!!! quote "sing-box 1.12.0 中的更改"
-
-    :material-plus: [strategy](#strategy)  
-    :material-plus: [predefined](#predefined)
-
 !!! question "自 sing-box 1.11.0 起"
 
 ### route
 
 ```json
 {
-  "action": "route",
-  // 默认
+  "action": "route",  // 默认
   "server": "",
-  "strategy": "",
+  
+  // 兼容性
   "disable_cache": false,
-  "rewrite_ttl": null,
+  "rewrite_ttl": 0,
   "client_subnet": null
 }
 ```
@@ -31,14 +26,6 @@ icon: material/new-box
 
 目标 DNS 服务器的标签。
 
-#### 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`。
-
 #### disable_cache
 
 在此查询中禁用缓存。
@@ -53,7 +40,7 @@ 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`.
+将覆盖 `dns.client_subnet` 与 `servers.[].client_subnet`。
 
 ### route-options
 
@@ -73,7 +60,7 @@ icon: material/new-box
 ```json
 {
   "action": "reject",
-  "method": "",
+  "method": "default", // default
   "no_drop": false
 }
 ```
@@ -85,61 +72,8 @@ 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。