ccm,ocm: add request ID context to HTTP request logging

The upstream OpenAI WebSocket endpoint requires the
OpenAI-Beta: responses_websockets=2026-02-06 header. Set it
automatically when the client doesn't provide it.

Also capture and log the response body on non-429 WebSocket
handshake failures to surface the actual error from upstream.

.fpm_systemd

@@ -4,7 +4,6 @@
 --license GPL-3.0-or-later
 --description "The universal proxy platform."
 --url "https://sing-box.sagernet.org/"
---vendor SagerNet
 --maintainer "nekohasekai <contact-git@sekai.icu>"
 --deb-field "Bug: https://github.com/SagerNet/sing-box/issues"
 --no-deb-generate-changes

.github/CRONET_GO_VERSION

@@ -1 +1 @@
-335e5bef5d88fc4474c9a70b865561f45a67de83
+ea7cd33752aed62603775af3df946c1b83f4b0b3

.github/detect_track.sh

@@ -1,33 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-branches=$(git branch -r --contains HEAD)
-if echo "$branches" | grep -q 'origin/stable'; then
-  track=stable
-elif echo "$branches" | grep -q 'origin/testing'; then
-  track=testing
-elif echo "$branches" | grep -q 'origin/oldstable'; then
-  track=oldstable
-else
-  echo "ERROR: HEAD is not on any known release branch (stable/testing/oldstable)" >&2
-  exit 1
-fi
-
-if [[ "$track" == "stable" ]]; then
-  tag=$(git describe --tags --exact-match HEAD 2>/dev/null || true)
-  if [[ -n "$tag" && "$tag" == *"-"* ]]; then
-    track=beta
-  fi
-fi
-
-case "$track" in
-  stable)    name=sing-box;           docker_tag=latest ;;
-  beta)      name=sing-box-beta;      docker_tag=latest-beta ;;
-  testing)   name=sing-box-testing;   docker_tag=latest-testing ;;
-  oldstable) name=sing-box-oldstable; docker_tag=latest-oldstable ;;
-esac
-
-echo "track=${track} name=${name} docker_tag=${docker_tag}" >&2
-echo "TRACK=${track}" >> "$GITHUB_ENV"
-echo "NAME=${name}" >> "$GITHUB_ENV"
-echo "DOCKER_TAG=${docker_tag}" >> "$GITHUB_ENV"

.github/workflows/docker.yml

@@ -19,6 +19,7 @@ env:
 jobs:
   build_binary:
     name: Build binary
+    if: github.event_name != 'release' || github.event.release.target_commitish != 'oldstable'
     runs-on: ubuntu-latest
     strategy:
       fail-fast: true
@@ -259,13 +260,13 @@ jobs:
           fi
           echo "ref=$ref"
           echo "ref=$ref" >> $GITHUB_OUTPUT
-      - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
-        with:
-          ref: ${{ steps.ref.outputs.ref }}
-          fetch-depth: 0
-      - name: Detect track
-        run: bash .github/detect_track.sh
+          if [[ $ref == *"-"* ]]; then
+            latest=latest-beta
+          else
+            latest=latest
+          fi
+          echo "latest=$latest"
+          echo "latest=$latest" >> $GITHUB_OUTPUT
       - name: Download digests
         uses: actions/download-artifact@v5
         with:
@@ -285,11 +286,11 @@ jobs:
         working-directory: /tmp/digests
         run: |
           docker buildx imagetools create \
-            -t "${{ env.REGISTRY_IMAGE }}:${{ env.DOCKER_TAG }}" \
+            -t "${{ env.REGISTRY_IMAGE }}:${{ steps.ref.outputs.latest }}" \
             -t "${{ env.REGISTRY_IMAGE }}:${{ steps.ref.outputs.ref }}" \
             $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)
       - name: Inspect image
         if: github.event_name != 'push'
         run: |
-          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ env.DOCKER_TAG }}
+          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.ref.outputs.latest }}
           docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.ref.outputs.ref }}

.github/workflows/linux.yml

@@ -11,6 +11,11 @@ on:
         description: "Version name"
         required: true
         type: string
+      forceBeta:
+        description: "Force beta"
+        required: false
+        type: boolean
+        default: false
   release:
     types:
       - published
@@ -18,6 +23,7 @@ on:
 jobs:
   calculate_version:
     name: Calculate version
+    if: github.event_name != 'release' || github.event.release.target_commitish != 'oldstable'
     runs-on: ubuntu-latest
     outputs:
       version: ${{ steps.outputs.outputs.version }}
@@ -162,8 +168,14 @@ jobs:
       - name: Set mtime
         run: |-
           TZ=UTC touch -t '197001010000' dist/sing-box
-      - name: Detect track
-        run: bash .github/detect_track.sh
+      - name: Set name
+        if: (! contains(needs.calculate_version.outputs.version, '-')) && !inputs.forceBeta
+        run: |-
+          echo "NAME=sing-box" >> "$GITHUB_ENV"
+      - name: Set beta name
+        if: contains(needs.calculate_version.outputs.version, '-') || inputs.forceBeta
+        run: |-
+          echo "NAME=sing-box-beta" >> "$GITHUB_ENV"
       - name: Set version
         run: |-
           PKG_VERSION="${{ needs.calculate_version.outputs.version }}"

adapter/certificate/adapter.go

@@ -1,21 +0,0 @@
-package certificate
-
-type Adapter struct {
-	providerType string
-	providerTag  string
-}
-
-func NewAdapter(providerType string, providerTag string) Adapter {
-	return Adapter{
-		providerType: providerType,
-		providerTag:  providerTag,
-	}
-}
-
-func (a *Adapter) Type() string {
-	return a.providerType
-}
-
-func (a *Adapter) Tag() string {
-	return a.providerTag
-}

adapter/certificate/manager.go

@@ -1,158 +0,0 @@
-package certificate
-
-import (
-	"context"
-	"os"
-	"sync"
-	"time"
-
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/taskmonitor"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
-	F "github.com/sagernet/sing/common/format"
-)
-
-var _ adapter.CertificateProviderManager = (*Manager)(nil)
-
-type Manager struct {
-	logger        log.ContextLogger
-	registry      adapter.CertificateProviderRegistry
-	access        sync.Mutex
-	started       bool
-	stage         adapter.StartStage
-	providers     []adapter.CertificateProviderService
-	providerByTag map[string]adapter.CertificateProviderService
-}
-
-func NewManager(logger log.ContextLogger, registry adapter.CertificateProviderRegistry) *Manager {
-	return &Manager{
-		logger:        logger,
-		registry:      registry,
-		providerByTag: make(map[string]adapter.CertificateProviderService),
-	}
-}
-
-func (m *Manager) Start(stage adapter.StartStage) error {
-	m.access.Lock()
-	if m.started && m.stage >= stage {
-		panic("already started")
-	}
-	m.started = true
-	m.stage = stage
-	providers := m.providers
-	m.access.Unlock()
-	for _, provider := range providers {
-		name := "certificate-provider/" + provider.Type() + "[" + provider.Tag() + "]"
-		m.logger.Trace(stage, " ", name)
-		startTime := time.Now()
-		err := adapter.LegacyStart(provider, stage)
-		if err != nil {
-			return E.Cause(err, stage, " ", name)
-		}
-		m.logger.Trace(stage, " ", name, " completed (", F.Seconds(time.Since(startTime).Seconds()), "s)")
-	}
-	return nil
-}
-
-func (m *Manager) Close() error {
-	m.access.Lock()
-	defer m.access.Unlock()
-	if !m.started {
-		return nil
-	}
-	m.started = false
-	providers := m.providers
-	m.providers = nil
-	monitor := taskmonitor.New(m.logger, C.StopTimeout)
-	var err error
-	for _, provider := range providers {
-		name := "certificate-provider/" + provider.Type() + "[" + provider.Tag() + "]"
-		m.logger.Trace("close ", name)
-		startTime := time.Now()
-		monitor.Start("close ", name)
-		err = E.Append(err, provider.Close(), func(err error) error {
-			return E.Cause(err, "close ", name)
-		})
-		monitor.Finish()
-		m.logger.Trace("close ", name, " completed (", F.Seconds(time.Since(startTime).Seconds()), "s)")
-	}
-	return err
-}
-
-func (m *Manager) CertificateProviders() []adapter.CertificateProviderService {
-	m.access.Lock()
-	defer m.access.Unlock()
-	return m.providers
-}
-
-func (m *Manager) Get(tag string) (adapter.CertificateProviderService, bool) {
-	m.access.Lock()
-	provider, found := m.providerByTag[tag]
-	m.access.Unlock()
-	return provider, found
-}
-
-func (m *Manager) Remove(tag string) error {
-	m.access.Lock()
-	provider, found := m.providerByTag[tag]
-	if !found {
-		m.access.Unlock()
-		return os.ErrInvalid
-	}
-	delete(m.providerByTag, tag)
-	index := common.Index(m.providers, func(it adapter.CertificateProviderService) bool {
-		return it == provider
-	})
-	if index == -1 {
-		panic("invalid certificate provider index")
-	}
-	m.providers = append(m.providers[:index], m.providers[index+1:]...)
-	started := m.started
-	m.access.Unlock()
-	if started {
-		return provider.Close()
-	}
-	return nil
-}
-
-func (m *Manager) Create(ctx context.Context, logger log.ContextLogger, tag string, providerType string, options any) error {
-	provider, err := m.registry.Create(ctx, logger, tag, providerType, options)
-	if err != nil {
-		return err
-	}
-	m.access.Lock()
-	defer m.access.Unlock()
-	if m.started {
-		name := "certificate-provider/" + provider.Type() + "[" + provider.Tag() + "]"
-		for _, stage := range adapter.ListStartStages {
-			m.logger.Trace(stage, " ", name)
-			startTime := time.Now()
-			err = adapter.LegacyStart(provider, stage)
-			if err != nil {
-				return E.Cause(err, stage, " ", name)
-			}
-			m.logger.Trace(stage, " ", name, " completed (", F.Seconds(time.Since(startTime).Seconds()), "s)")
-		}
-	}
-	if existsProvider, loaded := m.providerByTag[tag]; loaded {
-		if m.started {
-			err = existsProvider.Close()
-			if err != nil {
-				return E.Cause(err, "close certificate-provider/", existsProvider.Type(), "[", existsProvider.Tag(), "]")
-			}
-		}
-		existsIndex := common.Index(m.providers, func(it adapter.CertificateProviderService) bool {
-			return it == existsProvider
-		})
-		if existsIndex == -1 {
-			panic("invalid certificate provider index")
-		}
-		m.providers = append(m.providers[:existsIndex], m.providers[existsIndex+1:]...)
-	}
-	m.providers = append(m.providers, provider)
-	m.providerByTag[tag] = provider
-	return nil
-}

adapter/certificate/registry.go

@@ -1,72 +0,0 @@
-package certificate
-
-import (
-	"context"
-	"sync"
-
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
-)
-
-type ConstructorFunc[T any] func(ctx context.Context, logger log.ContextLogger, tag string, options T) (adapter.CertificateProviderService, error)
-
-func Register[Options any](registry *Registry, providerType string, constructor ConstructorFunc[Options]) {
-	registry.register(providerType, func() any {
-		return new(Options)
-	}, func(ctx context.Context, logger log.ContextLogger, tag string, rawOptions any) (adapter.CertificateProviderService, error) {
-		var options *Options
-		if rawOptions != nil {
-			options = rawOptions.(*Options)
-		}
-		return constructor(ctx, logger, tag, common.PtrValueOrDefault(options))
-	})
-}
-
-var _ adapter.CertificateProviderRegistry = (*Registry)(nil)
-
-type (
-	optionsConstructorFunc func() any
-	constructorFunc        func(ctx context.Context, logger log.ContextLogger, tag string, options any) (adapter.CertificateProviderService, error)
-)
-
-type Registry struct {
-	access      sync.Mutex
-	optionsType map[string]optionsConstructorFunc
-	constructor map[string]constructorFunc
-}
-
-func NewRegistry() *Registry {
-	return &Registry{
-		optionsType: make(map[string]optionsConstructorFunc),
-		constructor: make(map[string]constructorFunc),
-	}
-}
-
-func (m *Registry) CreateOptions(providerType string) (any, bool) {
-	m.access.Lock()
-	defer m.access.Unlock()
-	optionsConstructor, loaded := m.optionsType[providerType]
-	if !loaded {
-		return nil, false
-	}
-	return optionsConstructor(), true
-}
-
-func (m *Registry) Create(ctx context.Context, logger log.ContextLogger, tag string, providerType string, options any) (adapter.CertificateProviderService, error) {
-	m.access.Lock()
-	defer m.access.Unlock()
-	constructor, loaded := m.constructor[providerType]
-	if !loaded {
-		return nil, E.New("certificate provider type not found: " + providerType)
-	}
-	return constructor(ctx, logger, tag, options)
-}
-
-func (m *Registry) register(providerType string, optionsConstructor optionsConstructorFunc, constructor constructorFunc) {
-	m.access.Lock()
-	defer m.access.Unlock()
-	m.optionsType[providerType] = optionsConstructor
-	m.constructor[providerType] = constructor
-}

adapter/certificate_provider.go

@@ -1,38 +0,0 @@
-package adapter
-
-import (
-	"context"
-	"crypto/tls"
-
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-)
-
-type CertificateProvider interface {
-	GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error)
-}
-
-type ACMECertificateProvider interface {
-	CertificateProvider
-	GetACMENextProtos() []string
-}
-
-type CertificateProviderService interface {
-	Lifecycle
-	Type() string
-	Tag() string
-	CertificateProvider
-}
-
-type CertificateProviderRegistry interface {
-	option.CertificateProviderOptionsRegistry
-	Create(ctx context.Context, logger log.ContextLogger, tag string, providerType string, options any) (CertificateProviderService, error)
-}
-
-type CertificateProviderManager interface {
-	Lifecycle
-	CertificateProviders() []CertificateProviderService
-	Get(tag string) (CertificateProviderService, bool)
-	Remove(tag string) error
-	Create(ctx context.Context, logger log.ContextLogger, tag string, providerType string, options any) error
-}

adapter/dns.go

@@ -3,7 +3,6 @@ package adapter
 import (
 	"context"
 	"net/netip"
-	"time"
 
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
@@ -26,19 +25,18 @@ type DNSRouter interface {
 
 type DNSClient interface {
 	Start()
-	Exchange(ctx context.Context, transport DNSTransport, message *dns.Msg, options DNSQueryOptions, responseChecker func(response *dns.Msg) bool) (*dns.Msg, error)
-	Lookup(ctx context.Context, transport DNSTransport, domain string, options DNSQueryOptions, responseChecker func(response *dns.Msg) bool) ([]netip.Addr, error)
+	Exchange(ctx context.Context, transport DNSTransport, message *dns.Msg, options DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) (*dns.Msg, error)
+	Lookup(ctx context.Context, transport DNSTransport, domain string, options DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) ([]netip.Addr, error)
 	ClearCache()
 }
 
 type DNSQueryOptions struct {
-	Transport              DNSTransport
-	Strategy               C.DomainStrategy
-	LookupStrategy         C.DomainStrategy
-	DisableCache           bool
-	DisableOptimisticCache bool
-	RewriteTTL             *uint32
-	ClientSubnet           netip.Prefix
+	Transport      DNSTransport
+	Strategy       C.DomainStrategy
+	LookupStrategy C.DomainStrategy
+	DisableCache   bool
+	RewriteTTL     *uint32
+	ClientSubnet   netip.Prefix
 }
 
 func DNSQueryOptionsFrom(ctx context.Context, options *option.DomainResolveOptions) (*DNSQueryOptions, error) {
@@ -51,12 +49,11 @@ func DNSQueryOptionsFrom(ctx context.Context, options *option.DomainResolveOptio
 		return nil, E.New("domain resolver not found: " + options.Server)
 	}
 	return &DNSQueryOptions{
-		Transport:              transport,
-		Strategy:               C.DomainStrategy(options.Strategy),
-		DisableCache:           options.DisableCache,
-		DisableOptimisticCache: options.DisableOptimisticCache,
-		RewriteTTL:             options.RewriteTTL,
-		ClientSubnet:           options.ClientSubnet.Build(netip.Prefix{}),
+		Transport:    transport,
+		Strategy:     C.DomainStrategy(options.Strategy),
+		DisableCache: options.DisableCache,
+		RewriteTTL:   options.RewriteTTL,
+		ClientSubnet: options.ClientSubnet.Build(netip.Prefix{}),
 	}, nil
 }
 
@@ -66,13 +63,6 @@ type RDRCStore interface {
 	SaveRDRCAsync(transportName string, qName string, qType uint16, logger logger.Logger)
 }
 
-type DNSCacheStore interface {
-	LoadDNSCache(transportName string, qName string, qType uint16) (rawMessage []byte, expireAt time.Time, loaded bool)
-	SaveDNSCache(transportName string, qName string, qType uint16, rawMessage []byte, expireAt time.Time) error
-	SaveDNSCacheAsync(transportName string, qName string, qType uint16, rawMessage []byte, expireAt time.Time, logger logger.Logger)
-	ClearDNSCache() error
-}
-
 type DNSTransport interface {
 	Lifecycle
 	Type() string
@@ -82,6 +72,11 @@ type DNSTransport interface {
 	Exchange(ctx context.Context, message *dns.Msg) (*dns.Msg, error)
 }
 
+type LegacyDNSTransport interface {
+	LegacyStrategy() C.DomainStrategy
+	LegacyClientSubnet() netip.Prefix
+}
+
 type DNSTransportRegistry interface {
 	option.DNSTransportOptionsRegistry
 	CreateDNSTransport(ctx context.Context, logger log.ContextLogger, tag string, transportType string, options any) (DNSTransport, error)

adapter/experimental.go

@@ -47,12 +47,6 @@ type CacheFile interface {
 	StoreRDRC() bool
 	RDRCStore
 
-	StoreDNS() bool
-	DNSCacheStore
-
-	SetDisableExpire(disableExpire bool)
-	SetOptimisticTimeout(timeout time.Duration)
-
 	LoadMode() string
 	StoreMode(mode string) error
 	LoadSelected(group string) string

adapter/http.go

@@ -1,13 +0,0 @@
-package adapter
-
-import (
-	"net/http"
-
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common/logger"
-)
-
-type HTTPClientManager interface {
-	ResolveTransport(logger logger.ContextLogger, options option.HTTPClientOptions) (http.RoundTripper, error)
-	DefaultTransport() http.RoundTripper
-}

adapter/inbound.go

@@ -10,8 +10,6 @@ import (
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	M "github.com/sagernet/sing/common/metadata"
-
-	"github.com/miekg/dns"
 )
 
 type Inbound interface {
@@ -81,16 +79,14 @@ type InboundContext struct {
 	FallbackNetworkType []C.InterfaceType
 	FallbackDelay       time.Duration
 
-	DestinationAddresses                []netip.Addr
-	DNSResponse                         *dns.Msg
-	DestinationAddressMatchFromResponse bool
-	SourceGeoIPCode                     string
-	GeoIPCode                           string
-	ProcessInfo                         *ConnectionOwner
-	SourceMACAddress                    net.HardwareAddr
-	SourceHostname                      string
-	QueryType                           uint16
-	FakeIP                              bool
+	DestinationAddresses []netip.Addr
+	SourceGeoIPCode      string
+	GeoIPCode            string
+	ProcessInfo          *ConnectionOwner
+	SourceMACAddress     net.HardwareAddr
+	SourceHostname       string
+	QueryType            uint16
+	FakeIP               bool
 
 	// rule cache
 
@@ -108,10 +104,6 @@ type InboundContext struct {
 func (c *InboundContext) ResetRuleCache() {
 	c.IPCIDRMatchSource = false
 	c.IPCIDRAcceptEmpty = false
-	c.ResetRuleMatchCache()
-}
-
-func (c *InboundContext) ResetRuleMatchCache() {
 	c.SourceAddressMatch = false
 	c.SourcePortMatch = false
 	c.DestinationAddressMatch = false
@@ -119,51 +111,6 @@ func (c *InboundContext) ResetRuleMatchCache() {
 	c.DidMatch = false
 }
 
-func (c *InboundContext) DNSResponseAddressesForMatch() []netip.Addr {
-	return DNSResponseAddresses(c.DNSResponse)
-}
-
-func DNSResponseAddresses(response *dns.Msg) []netip.Addr {
-	if response == nil || response.Rcode != dns.RcodeSuccess {
-		return nil
-	}
-	addresses := make([]netip.Addr, 0, len(response.Answer))
-	for _, rawRecord := range response.Answer {
-		switch record := rawRecord.(type) {
-		case *dns.A:
-			addr := M.AddrFromIP(record.A)
-			if addr.IsValid() {
-				addresses = append(addresses, addr)
-			}
-		case *dns.AAAA:
-			addr := M.AddrFromIP(record.AAAA)
-			if addr.IsValid() {
-				addresses = append(addresses, addr)
-			}
-		case *dns.HTTPS:
-			for _, value := range record.SVCB.Value {
-				switch hint := value.(type) {
-				case *dns.SVCBIPv4Hint:
-					for _, ip := range hint.Hint {
-						addr := M.AddrFromIP(ip).Unmap()
-						if addr.IsValid() {
-							addresses = append(addresses, addr)
-						}
-					}
-				case *dns.SVCBIPv6Hint:
-					for _, ip := range hint.Hint {
-						addr := M.AddrFromIP(ip)
-						if addr.IsValid() {
-							addresses = append(addresses, addr)
-						}
-					}
-				}
-			}
-		}
-	}
-	return addresses
-}
-
 type inboundContextKey struct{}
 
 func WithContext(ctx context.Context, inboundContext *InboundContext) context.Context {

adapter/inbound_test.go

@@ -1,45 +0,0 @@
-package adapter
-
-import (
-	"net"
-	"net/netip"
-	"testing"
-
-	"github.com/miekg/dns"
-	"github.com/stretchr/testify/require"
-)
-
-func TestDNSResponseAddressesUnmapsHTTPSIPv4Hints(t *testing.T) {
-	t.Parallel()
-
-	ipv4Hint := net.ParseIP("1.1.1.1")
-	require.NotNil(t, ipv4Hint)
-
-	response := &dns.Msg{
-		MsgHdr: dns.MsgHdr{
-			Response: true,
-			Rcode:    dns.RcodeSuccess,
-		},
-		Answer: []dns.RR{
-			&dns.HTTPS{
-				SVCB: dns.SVCB{
-					Hdr: dns.RR_Header{
-						Name:   dns.Fqdn("example.com"),
-						Rrtype: dns.TypeHTTPS,
-						Class:  dns.ClassINET,
-						Ttl:    60,
-					},
-					Priority: 1,
-					Target:   ".",
-					Value: []dns.SVCBKeyValue{
-						&dns.SVCBIPv4Hint{Hint: []net.IP{ipv4Hint}},
-					},
-				},
-			},
-		},
-	}
-
-	addresses := DNSResponseAddresses(response)
-	require.Equal(t, []netip.Addr{netip.MustParseAddr("1.1.1.1")}, addresses)
-	require.True(t, addresses[0].Is4())
-}

adapter/platform.go

@@ -51,11 +51,11 @@ type FindConnectionOwnerRequest struct {
 }
 
 type ConnectionOwner struct {
-	ProcessID           uint32
-	UserId              int32
-	UserName            string
-	ProcessPath         string
-	AndroidPackageNames []string
+	ProcessID          uint32
+	UserId             int32
+	UserName           string
+	ProcessPath        string
+	AndroidPackageName string
 }
 
 type Notification struct {

adapter/router.go

@@ -2,11 +2,17 @@ package adapter
 
 import (
 	"context"
+	"crypto/tls"
 	"net"
+	"net/http"
+	"sync"
 	"time"
 
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-tun"
+	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"
@@ -45,7 +51,7 @@ type ConnectionRouterEx interface {
 
 type RuleSet interface {
 	Name() string
-	StartContext(ctx context.Context) error
+	StartContext(ctx context.Context, startContext *HTTPStartContext) error
 	PostStart() error
 	Metadata() RuleSetMetadata
 	ExtractIPSet() []*netipx.IPSet
@@ -60,14 +66,51 @@ type RuleSet interface {
 
 type RuleSetUpdateCallback func(it RuleSet)
 
-type DNSRuleSetUpdateValidator interface {
-	ValidateRuleSetMetadataUpdate(tag string, metadata RuleSetMetadata) error
+type RuleSetMetadata struct {
+	ContainsProcessRule bool
+	ContainsWIFIRule    bool
+	ContainsIPCIDRRule  bool
+}
+type HTTPStartContext struct {
+	ctx             context.Context
+	access          sync.Mutex
+	httpClientCache map[string]*http.Client
 }
 
-// ip_version is not a headless-rule item, so ContainsIPVersionRule is intentionally absent.
-type RuleSetMetadata struct {
-	ContainsProcessRule      bool
-	ContainsWIFIRule         bool
-	ContainsIPCIDRRule       bool
-	ContainsDNSQueryTypeRule bool
+func NewHTTPStartContext(ctx context.Context) *HTTPStartContext {
+	return &HTTPStartContext{
+		ctx:             ctx,
+		httpClientCache: make(map[string]*http.Client),
+	}
+}
+
+func (c *HTTPStartContext) HTTPClient(detour string, dialer N.Dialer) *http.Client {
+	c.access.Lock()
+	defer c.access.Unlock()
+	if httpClient, loaded := c.httpClientCache[detour]; loaded {
+		return httpClient
+	}
+	httpClient := &http.Client{
+		Transport: &http.Transport{
+			ForceAttemptHTTP2:   true,
+			TLSHandshakeTimeout: C.TCPTimeout,
+			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
+	return httpClient
+}
+
+func (c *HTTPStartContext) Close() {
+	c.access.Lock()
+	defer c.access.Unlock()
+	for _, client := range c.httpClientCache {
+		client.CloseIdleConnections()
+	}
 }

adapter/rule.go

@@ -2,8 +2,6 @@ package adapter
 
 import (
 	C "github.com/sagernet/sing-box/constant"
-
-	"github.com/miekg/dns"
 )
 
 type HeadlessRule interface {
@@ -20,9 +18,8 @@ type Rule interface {
 
 type DNSRule interface {
 	Rule
-	LegacyPreMatch(metadata *InboundContext) bool
 	WithAddressLimit() bool
-	MatchAddressLimit(metadata *InboundContext, response *dns.Msg) bool
+	MatchAddressLimit(metadata *InboundContext) bool
 }
 
 type RuleAction interface {
@@ -32,7 +29,7 @@ type RuleAction interface {
 
 func IsFinalAction(action RuleAction) bool {
 	switch action.Type() {
-	case C.RuleActionTypeSniff, C.RuleActionTypeResolve, C.RuleActionTypeEvaluate:
+	case C.RuleActionTypeSniff, C.RuleActionTypeResolve:
 		return false
 	default:
 		return true

adapter/tailscale.go

@@ -1,49 +0,0 @@
-package adapter
-
-import "context"
-
-type TailscaleEndpoint interface {
-	SubscribeTailscaleStatus(ctx context.Context, fn func(*TailscaleEndpointStatus)) error
-	StartTailscalePing(ctx context.Context, peerIP string, fn func(*TailscalePingResult)) error
-}
-
-type TailscalePingResult struct {
-	LatencyMs      float64
-	IsDirect       bool
-	Endpoint       string
-	DERPRegionID   int32
-	DERPRegionCode string
-	Error          string
-}
-
-type TailscaleEndpointStatus struct {
-	BackendState   string
-	AuthURL        string
-	NetworkName    string
-	MagicDNSSuffix string
-	Self           *TailscalePeer
-	UserGroups     []*TailscaleUserGroup
-}
-
-type TailscaleUserGroup struct {
-	UserID        int64
-	LoginName     string
-	DisplayName   string
-	ProfilePicURL string
-	Peers         []*TailscalePeer
-}
-
-type TailscalePeer struct {
-	HostName       string
-	DNSName        string
-	OS             string
-	TailscaleIPs   []string
-	Online         bool
-	ExitNode       bool
-	ExitNodeOption bool
-	Active         bool
-	RxBytes        int64
-	TxBytes        int64
-	UserID         int64
-	KeyExpiry      int64
-}

box.go

@@ -9,21 +9,19 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	boxCertificate "github.com/sagernet/sing-box/adapter/certificate"
 	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/inbound"
 	"github.com/sagernet/sing-box/adapter/outbound"
 	boxService "github.com/sagernet/sing-box/adapter/service"
 	"github.com/sagernet/sing-box/common/certificate"
 	"github.com/sagernet/sing-box/common/dialer"
-	"github.com/sagernet/sing-box/common/httpclient"
 	"github.com/sagernet/sing-box/common/taskmonitor"
 	"github.com/sagernet/sing-box/common/tls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/dns/transport/local"
 	"github.com/sagernet/sing-box/experimental"
 	"github.com/sagernet/sing-box/experimental/cachefile"
-	"github.com/sagernet/sing-box/experimental/deprecated"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-box/protocol/direct"
@@ -39,22 +37,20 @@ import (
 var _ adapter.SimpleLifecycle = (*Box)(nil)
 
 type Box struct {
-	createdAt           time.Time
-	logFactory          log.Factory
-	logger              log.ContextLogger
-	network             *route.NetworkManager
-	endpoint            *endpoint.Manager
-	inbound             *inbound.Manager
-	outbound            *outbound.Manager
-	service             *boxService.Manager
-	certificateProvider *boxCertificate.Manager
-	dnsTransport        *dns.TransportManager
-	dnsRouter           *dns.Router
-	connection          *route.ConnectionManager
-	router              *route.Router
-	httpClientService   adapter.LifecycleService
-	internalService     []adapter.LifecycleService
-	done                chan struct{}
+	createdAt       time.Time
+	logFactory      log.Factory
+	logger          log.ContextLogger
+	network         *route.NetworkManager
+	endpoint        *endpoint.Manager
+	inbound         *inbound.Manager
+	outbound        *outbound.Manager
+	service         *boxService.Manager
+	dnsTransport    *dns.TransportManager
+	dnsRouter       *dns.Router
+	connection      *route.ConnectionManager
+	router          *route.Router
+	internalService []adapter.LifecycleService
+	done            chan struct{}
 }
 
 type Options struct {
@@ -70,7 +66,6 @@ func Context(
 	endpointRegistry adapter.EndpointRegistry,
 	dnsTransportRegistry adapter.DNSTransportRegistry,
 	serviceRegistry adapter.ServiceRegistry,
-	certificateProviderRegistry adapter.CertificateProviderRegistry,
 ) context.Context {
 	if service.FromContext[option.InboundOptionsRegistry](ctx) == nil ||
 		service.FromContext[adapter.InboundRegistry](ctx) == nil {
@@ -95,10 +90,6 @@ func Context(
 		ctx = service.ContextWith[option.ServiceOptionsRegistry](ctx, serviceRegistry)
 		ctx = service.ContextWith[adapter.ServiceRegistry](ctx, serviceRegistry)
 	}
-	if service.FromContext[adapter.CertificateProviderRegistry](ctx) == nil {
-		ctx = service.ContextWith[option.CertificateProviderOptionsRegistry](ctx, certificateProviderRegistry)
-		ctx = service.ContextWith[adapter.CertificateProviderRegistry](ctx, certificateProviderRegistry)
-	}
 	return ctx
 }
 
@@ -115,7 +106,6 @@ func New(options Options) (*Box, error) {
 	outboundRegistry := service.FromContext[adapter.OutboundRegistry](ctx)
 	dnsTransportRegistry := service.FromContext[adapter.DNSTransportRegistry](ctx)
 	serviceRegistry := service.FromContext[adapter.ServiceRegistry](ctx)
-	certificateProviderRegistry := service.FromContext[adapter.CertificateProviderRegistry](ctx)
 
 	if endpointRegistry == nil {
 		return nil, E.New("missing endpoint registry in context")
@@ -132,9 +122,6 @@ func New(options Options) (*Box, error) {
 	if serviceRegistry == nil {
 		return nil, E.New("missing service registry in context")
 	}
-	if certificateProviderRegistry == nil {
-		return nil, E.New("missing certificate provider registry in context")
-	}
 
 	ctx = pause.WithDefaultManager(ctx)
 	experimentalOptions := common.PtrValueOrDefault(options.Experimental)
@@ -172,10 +159,6 @@ func New(options Options) (*Box, error) {
 	}
 
 	var internalServices []adapter.LifecycleService
-	routeOptions := common.PtrValueOrDefault(options.Route)
-	httpClientManager := httpclient.NewManager(ctx, logFactory.NewLogger("httpclient"), options.HTTPClients, routeOptions.DefaultHTTPClient)
-	service.MustRegister[adapter.HTTPClientManager](ctx, httpClientManager)
-	httpClientService := adapter.LifecycleService(httpClientManager)
 	certificateOptions := common.PtrValueOrDefault(options.Certificate)
 	if C.IsAndroid || certificateOptions.Store != "" && certificateOptions.Store != C.CertificateStoreSystem ||
 		len(certificateOptions.Certificate) > 0 ||
@@ -188,25 +171,21 @@ func New(options Options) (*Box, error) {
 		service.MustRegister[adapter.CertificateStore](ctx, certificateStore)
 		internalServices = append(internalServices, certificateStore)
 	}
+
+	routeOptions := common.PtrValueOrDefault(options.Route)
 	dnsOptions := common.PtrValueOrDefault(options.DNS)
 	endpointManager := endpoint.NewManager(logFactory.NewLogger("endpoint"), endpointRegistry)
 	inboundManager := inbound.NewManager(logFactory.NewLogger("inbound"), inboundRegistry, endpointManager)
 	outboundManager := outbound.NewManager(logFactory.NewLogger("outbound"), outboundRegistry, endpointManager, routeOptions.Final)
 	dnsTransportManager := dns.NewTransportManager(logFactory.NewLogger("dns/transport"), dnsTransportRegistry, outboundManager, dnsOptions.Final)
 	serviceManager := boxService.NewManager(logFactory.NewLogger("service"), serviceRegistry)
-	certificateProviderManager := boxCertificate.NewManager(logFactory.NewLogger("certificate-provider"), certificateProviderRegistry)
 	service.MustRegister[adapter.EndpointManager](ctx, endpointManager)
 	service.MustRegister[adapter.InboundManager](ctx, inboundManager)
 	service.MustRegister[adapter.OutboundManager](ctx, outboundManager)
 	service.MustRegister[adapter.DNSTransportManager](ctx, dnsTransportManager)
 	service.MustRegister[adapter.ServiceManager](ctx, serviceManager)
-	service.MustRegister[adapter.CertificateProviderManager](ctx, certificateProviderManager)
-	dnsRouter, err := dns.NewRouter(ctx, logFactory, dnsOptions)
-	if err != nil {
-		return nil, E.Cause(err, "initialize DNS router")
-	}
+	dnsRouter := dns.NewRouter(ctx, logFactory, dnsOptions)
 	service.MustRegister[adapter.DNSRouter](ctx, dnsRouter)
-	service.MustRegister[adapter.DNSRuleSetUpdateValidator](ctx, dnsRouter)
 	networkManager, err := route.NewNetworkManager(ctx, logFactory.NewLogger("network"), routeOptions, dnsOptions)
 	if err != nil {
 		return nil, E.Cause(err, "initialize network manager")
@@ -293,24 +272,6 @@ func New(options Options) (*Box, error) {
 			return nil, E.Cause(err, "initialize inbound[", i, "]")
 		}
 	}
-	for i, serviceOptions := range options.Services {
-		var tag string
-		if serviceOptions.Tag != "" {
-			tag = serviceOptions.Tag
-		} else {
-			tag = F.ToString(i)
-		}
-		err = serviceManager.Create(
-			ctx,
-			logFactory.NewLogger(F.ToString("service/", serviceOptions.Type, "[", tag, "]")),
-			tag,
-			serviceOptions.Type,
-			serviceOptions.Options,
-		)
-		if err != nil {
-			return nil, E.Cause(err, "initialize service[", i, "]")
-		}
-	}
 	for i, outboundOptions := range options.Outbounds {
 		var tag string
 		if outboundOptions.Tag != "" {
@@ -337,22 +298,22 @@ func New(options Options) (*Box, error) {
 			return nil, E.Cause(err, "initialize outbound[", i, "]")
 		}
 	}
-	for i, certificateProviderOptions := range options.CertificateProviders {
+	for i, serviceOptions := range options.Services {
 		var tag string
-		if certificateProviderOptions.Tag != "" {
-			tag = certificateProviderOptions.Tag
+		if serviceOptions.Tag != "" {
+			tag = serviceOptions.Tag
 		} else {
 			tag = F.ToString(i)
 		}
-		err = certificateProviderManager.Create(
+		err = serviceManager.Create(
 			ctx,
-			logFactory.NewLogger(F.ToString("certificate-provider/", certificateProviderOptions.Type, "[", tag, "]")),
+			logFactory.NewLogger(F.ToString("service/", serviceOptions.Type, "[", tag, "]")),
 			tag,
-			certificateProviderOptions.Type,
-			certificateProviderOptions.Options,
+			serviceOptions.Type,
+			serviceOptions.Options,
 		)
 		if err != nil {
-			return nil, E.Cause(err, "initialize certificate provider[", i, "]")
+			return nil, E.Cause(err, "initialize service[", i, "]")
 		}
 	}
 	outboundManager.Initialize(func() (adapter.Outbound, error) {
@@ -365,20 +326,13 @@ func New(options Options) (*Box, error) {
 		)
 	})
 	dnsTransportManager.Initialize(func() (adapter.DNSTransport, error) {
-		return dnsTransportRegistry.CreateDNSTransport(
+		return local.NewTransport(
 			ctx,
 			logFactory.NewLogger("dns/local"),
 			"local",
-			C.DNSTypeLocal,
-			&option.LocalDNSServerOptions{},
+			option.LocalDNSServerOptions{},
 		)
 	})
-	httpClientManager.Initialize(func() (*httpclient.Client, error) {
-		deprecated.Report(ctx, deprecated.OptionImplicitDefaultHTTPClient)
-		var httpClientOptions option.HTTPClientOptions
-		httpClientOptions.DefaultOutbound = true
-		return httpclient.NewClient(ctx, logFactory.NewLogger("httpclient"), "", httpClientOptions)
-	})
 	if platformInterface != nil {
 		err = platformInterface.Initialize(networkManager)
 		if err != nil {
@@ -386,7 +340,7 @@ func New(options Options) (*Box, error) {
 		}
 	}
 	if needCacheFile {
-		cacheFile := cachefile.New(ctx, logFactory.NewLogger("cache-file"), common.PtrValueOrDefault(experimentalOptions.CacheFile))
+		cacheFile := cachefile.New(ctx, common.PtrValueOrDefault(experimentalOptions.CacheFile))
 		service.MustRegister[adapter.CacheFile](ctx, cacheFile)
 		internalServices = append(internalServices, cacheFile)
 	}
@@ -429,22 +383,20 @@ func New(options Options) (*Box, error) {
 		internalServices = append(internalServices, adapter.NewLifecycleService(ntpService, "ntp service"))
 	}
 	return &Box{
-		network:             networkManager,
-		endpoint:            endpointManager,
-		inbound:             inboundManager,
-		outbound:            outboundManager,
-		dnsTransport:        dnsTransportManager,
-		service:             serviceManager,
-		certificateProvider: certificateProviderManager,
-		dnsRouter:           dnsRouter,
-		connection:          connectionManager,
-		router:              router,
-		httpClientService:   httpClientService,
-		createdAt:           createdAt,
-		logFactory:          logFactory,
-		logger:              logFactory.Logger(),
-		internalService:     internalServices,
-		done:                make(chan struct{}),
+		network:         networkManager,
+		endpoint:        endpointManager,
+		inbound:         inboundManager,
+		outbound:        outboundManager,
+		dnsTransport:    dnsTransportManager,
+		service:         serviceManager,
+		dnsRouter:       dnsRouter,
+		connection:      connectionManager,
+		router:          router,
+		createdAt:       createdAt,
+		logFactory:      logFactory,
+		logger:          logFactory.Logger(),
+		internalService: internalServices,
+		done:            make(chan struct{}),
 	}, nil
 }
 
@@ -498,19 +450,11 @@ func (s *Box) preStart() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(s.logger, adapter.StartStateInitialize, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.outbound, s.inbound, s.endpoint, s.service, s.certificateProvider)
+	err = adapter.Start(s.logger, adapter.StartStateInitialize, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.outbound, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(s.logger, adapter.StartStateStart, s.outbound, s.dnsTransport, s.network, s.connection)
-	if err != nil {
-		return err
-	}
-	err = adapter.StartNamed(s.logger, adapter.StartStateStart, []adapter.LifecycleService{s.httpClientService})
-	if err != nil {
-		return err
-	}
-	err = adapter.Start(s.logger, adapter.StartStateStart, s.router, s.dnsRouter)
+	err = adapter.Start(s.logger, adapter.StartStateStart, s.outbound, s.dnsTransport, s.dnsRouter, s.network, s.connection, s.router)
 	if err != nil {
 		return err
 	}
@@ -526,19 +470,11 @@ func (s *Box) start() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(s.logger, adapter.StartStateStart, s.endpoint)
+	err = adapter.Start(s.logger, adapter.StartStateStart, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(s.logger, adapter.StartStateStart, s.certificateProvider)
-	if err != nil {
-		return err
-	}
-	err = adapter.Start(s.logger, adapter.StartStateStart, s.inbound, s.service)
-	if err != nil {
-		return err
-	}
-	err = adapter.Start(s.logger, adapter.StartStatePostStart, s.outbound, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.endpoint, s.certificateProvider, s.inbound, s.service)
+	err = adapter.Start(s.logger, adapter.StartStatePostStart, s.outbound, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
@@ -546,7 +482,7 @@ func (s *Box) start() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(s.logger, adapter.StartStateStarted, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.outbound, s.endpoint, s.certificateProvider, s.inbound, s.service)
+	err = adapter.Start(s.logger, adapter.StartStateStarted, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.outbound, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
@@ -570,9 +506,8 @@ func (s *Box) Close() error {
 		service adapter.Lifecycle
 	}{
 		{"service", s.service},
-		{"inbound", s.inbound},
-		{"certificate-provider", s.certificateProvider},
 		{"endpoint", s.endpoint},
+		{"inbound", s.inbound},
 		{"outbound", s.outbound},
 		{"router", s.router},
 		{"connection", s.connection},
@@ -587,14 +522,6 @@ func (s *Box) Close() error {
 		})
 		s.logger.Trace("close ", closeItem.name, " completed (", F.Seconds(time.Since(startTime).Seconds()), "s)")
 	}
-	if s.httpClientService != nil {
-		s.logger.Trace("close ", s.httpClientService.Name())
-		startTime := time.Now()
-		err = E.Append(err, s.httpClientService.Close(), func(err error) error {
-			return E.Cause(err, "close ", s.httpClientService.Name())
-		})
-		s.logger.Trace("close ", s.httpClientService.Name(), " completed (", F.Seconds(time.Since(startTime).Seconds()), "s)")
-	}
 	for _, lifecycleService := range s.internalService {
 		s.logger.Trace("close ", lifecycleService.Name())
 		startTime := time.Now()
@@ -628,10 +555,6 @@ func (s *Box) Outbound() adapter.OutboundManager {
 	return s.outbound
 }
 
-func (s *Box) Endpoint() adapter.EndpointManager {
-	return s.endpoint
-}
-
 func (s *Box) LogFactory() log.Factory {
 	return s.logFactory
 }

cmd/internal/update_certificates/main.go

@@ -5,7 +5,6 @@ import (
 	"io"
 	"net/http"
 	"os"
-	"path/filepath"
 	"strings"
 
 	"github.com/sagernet/sing-box/log"
@@ -36,9 +35,21 @@ func updateMozillaIncludedRootCAs() error {
 		return err
 	}
 	geoIndex := slices.Index(header, "Geographic Focus")
+	nameIndex := slices.Index(header, "Common Name or Certificate Name")
 	certIndex := slices.Index(header, "PEM Info")
 
-	pemBundle := strings.Builder{}
+	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 {
@@ -49,12 +60,18 @@ func updateMozillaIncludedRootCAs() error {
 		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]
-		pemBundle.WriteString(cert)
-		pemBundle.WriteString("\n")
+		generated.WriteString(cert)
+		generated.WriteString("`))\n")
 	}
-	return writeGeneratedCertificateBundle("mozilla", "mozillaIncluded", pemBundle.String())
+	generated.WriteString("}\n")
+	return os.WriteFile("common/certificate/mozilla.go", []byte(generated.String()), 0o644)
 }
 
 func fetchChinaFingerprints() (map[string]bool, error) {
@@ -102,11 +119,23 @@ func updateChromeIncludedRootCAs() error {
 	if err != nil {
 		return err
 	}
+	subjectIndex := slices.Index(header, "Subject")
 	statusIndex := slices.Index(header, "Google Chrome Status")
 	certIndex := slices.Index(header, "X.509 Certificate (PEM)")
 	fingerprintIndex := slices.Index(header, "SHA-256 Fingerprint")
 
-	pemBundle := strings.Builder{}
+	generated := strings.Builder{}
+	generated.WriteString(`// Code generated by 'make update_certificates'. DO NOT EDIT.
+
+package certificate
+
+import "crypto/x509"
+
+var chromeIncluded *x509.CertPool
+
+func init() {
+	chromeIncluded = x509.NewCertPool()
+`)
 	for {
 		record, err := reader.Read()
 		if err == io.EOF {
@@ -120,39 +149,18 @@ func updateChromeIncludedRootCAs() error {
 		if chinaFingerprints[record[fingerprintIndex]] {
 			continue
 		}
+		generated.WriteString("\n	// ")
+		generated.WriteString(record[subjectIndex])
+		generated.WriteString("\n")
+		generated.WriteString("	chromeIncluded.AppendCertsFromPEM([]byte(`")
 		cert := record[certIndex]
+		// Remove single quotes if present
 		if len(cert) > 0 && cert[0] == '\'' {
 			cert = cert[1 : len(cert)-1]
 		}
-		pemBundle.WriteString(cert)
-		pemBundle.WriteString("\n")
+		generated.WriteString(cert)
+		generated.WriteString("`))\n")
 	}
-	return writeGeneratedCertificateBundle("chrome", "chromeIncluded", pemBundle.String())
-}
-
-func writeGeneratedCertificateBundle(name string, variableName string, pemBundle string) error {
-	goSource := `// Code generated by 'make update_certificates'. DO NOT EDIT.
-
-package certificate
-
-import (
-	"crypto/x509"
-	_ "embed"
-)
-
-//go:embed ` + name + `.pem
-var ` + variableName + `PEM string
-
-var ` + variableName + ` *x509.CertPool
-
-func init() {
-	` + variableName + ` = x509.NewCertPool()
-	` + variableName + `.AppendCertsFromPEM([]byte(` + variableName + `PEM))
-}
-`
-	err := os.WriteFile(filepath.Join("common/certificate", name+".pem"), []byte(pemBundle), 0o644)
-	if err != nil {
-		return err
-	}
-	return os.WriteFile(filepath.Join("common/certificate", name+".go"), []byte(goSource), 0o644)
+	generated.WriteString("}\n")
+	return os.WriteFile("common/certificate/chrome.go", []byte(generated.String()), 0o644)
 }

cmd/sing-box/cmd_rule_set_compile.go

@@ -82,11 +82,6 @@ func compileRuleSet(sourcePath string) error {
 }
 
 func downgradeRuleSetVersion(version uint8, options option.PlainRuleSet) uint8 {
-	if version == C.RuleSetVersion5 && !rule.HasHeadlessRule(options.Rules, func(rule option.DefaultHeadlessRule) bool {
-		return len(rule.PackageNameRegex) > 0
-	}) {
-		version = C.RuleSetVersion4
-	}
 	if version == C.RuleSetVersion4 && !rule.HasHeadlessRule(options.Rules, func(rule option.DefaultHeadlessRule) bool {
 		return rule.NetworkInterfaceAddress != nil && rule.NetworkInterfaceAddress.Size() > 0 ||
 			len(rule.DefaultInterfaceAddress) > 0

cmd/sing-box/cmd_tools_networkquality.go

@@ -1,121 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"strings"
-	"time"
-
-	"github.com/sagernet/sing-box/common/networkquality"
-	"github.com/sagernet/sing-box/log"
-
-	"github.com/spf13/cobra"
-)
-
-var (
-	commandNetworkQualityFlagConfigURL  string
-	commandNetworkQualityFlagSerial     bool
-	commandNetworkQualityFlagMaxRuntime int
-	commandNetworkQualityFlagHTTP3      bool
-)
-
-var commandNetworkQuality = &cobra.Command{
-	Use:   "networkquality",
-	Short: "Run a network quality test",
-	Run: func(cmd *cobra.Command, args []string) {
-		err := runNetworkQuality()
-		if err != nil {
-			log.Fatal(err)
-		}
-	},
-}
-
-func init() {
-	commandNetworkQuality.Flags().StringVar(
-		&commandNetworkQualityFlagConfigURL,
-		"config-url", "",
-		"Network quality test config URL (default: Apple mensura)",
-	)
-	commandNetworkQuality.Flags().BoolVar(
-		&commandNetworkQualityFlagSerial,
-		"serial", false,
-		"Run download and upload tests sequentially instead of in parallel",
-	)
-	commandNetworkQuality.Flags().IntVar(
-		&commandNetworkQualityFlagMaxRuntime,
-		"max-runtime", int(networkquality.DefaultMaxRuntime/time.Second),
-		"Network quality maximum runtime in seconds",
-	)
-	commandNetworkQuality.Flags().BoolVar(
-		&commandNetworkQualityFlagHTTP3,
-		"http3", false,
-		"Use HTTP/3 (QUIC) for measurement traffic",
-	)
-	commandTools.AddCommand(commandNetworkQuality)
-}
-
-func runNetworkQuality() error {
-	instance, err := createPreStartedClient()
-	if err != nil {
-		return err
-	}
-	defer instance.Close()
-
-	dialer, err := createDialer(instance, commandToolsFlagOutbound)
-	if err != nil {
-		return err
-	}
-
-	httpClient := networkquality.NewHTTPClient(dialer)
-	defer httpClient.CloseIdleConnections()
-
-	measurementClientFactory, err := networkquality.NewOptionalHTTP3Factory(dialer, commandNetworkQualityFlagHTTP3)
-	if err != nil {
-		return err
-	}
-
-	fmt.Fprintln(os.Stderr, "==== NETWORK QUALITY TEST ====")
-
-	result, err := networkquality.Run(networkquality.Options{
-		ConfigURL:            commandNetworkQualityFlagConfigURL,
-		HTTPClient:           httpClient,
-		NewMeasurementClient: measurementClientFactory,
-		Serial:               commandNetworkQualityFlagSerial,
-		MaxRuntime:           time.Duration(commandNetworkQualityFlagMaxRuntime) * time.Second,
-		Context:              globalCtx,
-		OnProgress: func(p networkquality.Progress) {
-			if !commandNetworkQualityFlagSerial && p.Phase != networkquality.PhaseIdle {
-				fmt.Fprintf(os.Stderr, "\rDownload: %s  RPM: %d  Upload: %s  RPM: %d",
-					networkquality.FormatBitrate(p.DownloadCapacity), p.DownloadRPM,
-					networkquality.FormatBitrate(p.UploadCapacity), p.UploadRPM)
-				return
-			}
-			switch networkquality.Phase(p.Phase) {
-			case networkquality.PhaseIdle:
-				if p.IdleLatencyMs > 0 {
-					fmt.Fprintf(os.Stderr, "\rIdle Latency: %d ms", p.IdleLatencyMs)
-				} else {
-					fmt.Fprint(os.Stderr, "\rMeasuring idle latency...")
-				}
-			case networkquality.PhaseDownload:
-				fmt.Fprintf(os.Stderr, "\rDownload: %s  RPM: %d",
-					networkquality.FormatBitrate(p.DownloadCapacity), p.DownloadRPM)
-			case networkquality.PhaseUpload:
-				fmt.Fprintf(os.Stderr, "\rUpload: %s  RPM: %d",
-					networkquality.FormatBitrate(p.UploadCapacity), p.UploadRPM)
-			}
-		},
-	})
-	if err != nil {
-		return err
-	}
-
-	fmt.Fprintln(os.Stderr)
-	fmt.Fprintln(os.Stderr, strings.Repeat("-", 40))
-	fmt.Fprintf(os.Stderr, "Idle Latency:            %d ms\n", result.IdleLatencyMs)
-	fmt.Fprintf(os.Stderr, "Download Capacity:       %-20s Accuracy: %s\n", networkquality.FormatBitrate(result.DownloadCapacity), result.DownloadCapacityAccuracy)
-	fmt.Fprintf(os.Stderr, "Upload Capacity:         %-20s Accuracy: %s\n", networkquality.FormatBitrate(result.UploadCapacity), result.UploadCapacityAccuracy)
-	fmt.Fprintf(os.Stderr, "Download Responsiveness: %-20s Accuracy: %s\n", fmt.Sprintf("%d RPM", result.DownloadRPM), result.DownloadRPMAccuracy)
-	fmt.Fprintf(os.Stderr, "Upload Responsiveness:   %-20s Accuracy: %s\n", fmt.Sprintf("%d RPM", result.UploadRPM), result.UploadRPMAccuracy)
-	return nil
-}

cmd/sing-box/cmd_tools_stun.go

@@ -1,79 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-
-	"github.com/sagernet/sing-box/common/stun"
-	"github.com/sagernet/sing-box/log"
-
-	"github.com/spf13/cobra"
-)
-
-var commandSTUNFlagServer string
-
-var commandSTUN = &cobra.Command{
-	Use:   "stun",
-	Short: "Run a STUN test",
-	Args:  cobra.NoArgs,
-	Run: func(cmd *cobra.Command, args []string) {
-		err := runSTUN()
-		if err != nil {
-			log.Fatal(err)
-		}
-	},
-}
-
-func init() {
-	commandSTUN.Flags().StringVarP(&commandSTUNFlagServer, "server", "s", stun.DefaultServer, "STUN server address")
-	commandTools.AddCommand(commandSTUN)
-}
-
-func runSTUN() error {
-	instance, err := createPreStartedClient()
-	if err != nil {
-		return err
-	}
-	defer instance.Close()
-
-	dialer, err := createDialer(instance, commandToolsFlagOutbound)
-	if err != nil {
-		return err
-	}
-
-	fmt.Fprintln(os.Stderr, "==== STUN TEST ====")
-
-	result, err := stun.Run(stun.Options{
-		Server:  commandSTUNFlagServer,
-		Dialer:  dialer,
-		Context: globalCtx,
-		OnProgress: func(p stun.Progress) {
-			switch p.Phase {
-			case stun.PhaseBinding:
-				if p.ExternalAddr != "" {
-					fmt.Fprintf(os.Stderr, "\rExternal Address: %s (%d ms)", p.ExternalAddr, p.LatencyMs)
-				} else {
-					fmt.Fprint(os.Stderr, "\rSending binding request...")
-				}
-			case stun.PhaseNATMapping:
-				fmt.Fprint(os.Stderr, "\rDetecting NAT mapping behavior...")
-			case stun.PhaseNATFiltering:
-				fmt.Fprint(os.Stderr, "\rDetecting NAT filtering behavior...")
-			}
-		},
-	})
-	if err != nil {
-		return err
-	}
-
-	fmt.Fprintln(os.Stderr)
-	fmt.Fprintf(os.Stderr, "External Address: %s\n", result.ExternalAddr)
-	fmt.Fprintf(os.Stderr, "Latency:          %d ms\n", result.LatencyMs)
-	if result.NATTypeSupported {
-		fmt.Fprintf(os.Stderr, "NAT Mapping:      %s\n", result.NATMapping)
-		fmt.Fprintf(os.Stderr, "NAT Filtering:    %s\n", result.NATFiltering)
-	} else {
-		fmt.Fprintln(os.Stderr, "NAT Type Detection: not supported by server")
-	}
-	return nil
-}

common/certificate/store.go

@@ -22,10 +22,8 @@ var _ adapter.CertificateStore = (*Store)(nil)
 
 type Store struct {
 	access                    sync.RWMutex
-	store                     string
 	systemPool                *x509.CertPool
 	currentPool               *x509.CertPool
-	currentPEM                []string
 	certificate               string
 	certificatePaths          []string
 	certificateDirectoryPaths []string
@@ -63,7 +61,6 @@ func NewStore(ctx context.Context, logger logger.Logger, options option.Certific
 		return nil, E.New("unknown certificate store: ", options.Store)
 	}
 	store := &Store{
-		store:                     options.Store,
 		systemPool:                systemPool,
 		certificate:               strings.Join(options.Certificate, "\n"),
 		certificatePaths:          options.CertificatePath,
@@ -126,37 +123,19 @@ func (s *Store) Pool() *x509.CertPool {
 	return s.currentPool
 }
 
-func (s *Store) StoreKind() string {
-	return s.store
-}
-
-func (s *Store) CurrentPEM() []string {
-	s.access.RLock()
-	defer s.access.RUnlock()
-	return append([]string(nil), s.currentPEM...)
-}
-
 func (s *Store) update() error {
 	s.access.Lock()
 	defer s.access.Unlock()
 	var currentPool *x509.CertPool
-	var currentPEM []string
 	if s.systemPool == nil {
 		currentPool = x509.NewCertPool()
 	} else {
 		currentPool = s.systemPool.Clone()
 	}
-	switch s.store {
-	case C.CertificateStoreMozilla:
-		currentPEM = append(currentPEM, mozillaIncludedPEM)
-	case C.CertificateStoreChrome:
-		currentPEM = append(currentPEM, chromeIncludedPEM)
-	}
 	if s.certificate != "" {
 		if !currentPool.AppendCertsFromPEM([]byte(s.certificate)) {
 			return E.New("invalid certificate PEM strings")
 		}
-		currentPEM = append(currentPEM, s.certificate)
 	}
 	for _, path := range s.certificatePaths {
 		pemContent, err := os.ReadFile(path)
@@ -166,7 +145,6 @@ func (s *Store) update() error {
 		if !currentPool.AppendCertsFromPEM(pemContent) {
 			return E.New("invalid certificate PEM file: ", path)
 		}
-		currentPEM = append(currentPEM, string(pemContent))
 	}
 	var firstErr error
 	for _, directoryPath := range s.certificateDirectoryPaths {
@@ -179,8 +157,8 @@ func (s *Store) update() error {
 		}
 		for _, directoryEntry := range directoryEntries {
 			pemContent, err := os.ReadFile(filepath.Join(directoryPath, directoryEntry.Name()))
-			if err == nil && currentPool.AppendCertsFromPEM(pemContent) {
-				currentPEM = append(currentPEM, string(pemContent))
+			if err == nil {
+				currentPool.AppendCertsFromPEM(pemContent)
 			}
 		}
 	}
@@ -188,7 +166,6 @@ func (s *Store) update() error {
 		return firstErr
 	}
 	s.currentPool = currentPool
-	s.currentPEM = currentPEM
 	return nil
 }
 

common/dialer/default.go

@@ -149,10 +149,7 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 	} else {
 		dialer.Timeout = C.TCPConnectTimeout
 	}
-	if options.DisableTCPKeepAlive {
-		dialer.KeepAlive = -1
-		dialer.KeepAliveConfig.Enable = false
-	} else {
+	if !options.DisableTCPKeepAlive {
 		keepIdle := time.Duration(options.TCPKeepAlive)
 		if keepIdle == 0 {
 			keepIdle = C.TCPKeepAliveInitial
@@ -242,7 +239,7 @@ func setMarkWrapper(networkManager adapter.NetworkManager, mark uint32, isDefaul
 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.IsDomain() {
+	} else if address.IsFqdn() {
 		return nil, E.New("domain not resolved")
 	}
 	if d.networkStrategy == nil {
@@ -332,9 +329,9 @@ func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 
 func (d *DefaultDialer) DialerForICMPDestination(destination netip.Addr) net.Dialer {
 	if !destination.Is6() {
-		return d.dialer4.Dialer
-	} else {
 		return d.dialer6.Dialer
+	} else {
+		return d.dialer4.Dialer
 	}
 }
 

common/dialer/detour.go

@@ -19,7 +19,6 @@ type DirectDialer interface {
 type DetourDialer struct {
 	outboundManager adapter.OutboundManager
 	detour          string
-	defaultOutbound bool
 	legacyDNSDialer bool
 	dialer          N.Dialer
 	initOnce        sync.Once
@@ -34,13 +33,6 @@ func NewDetour(outboundManager adapter.OutboundManager, detour string, legacyDNS
 	}
 }
 
-func NewDefaultOutboundDetour(outboundManager adapter.OutboundManager) N.Dialer {
-	return &DetourDialer{
-		outboundManager: outboundManager,
-		defaultOutbound: true,
-	}
-}
-
 func InitializeDetour(dialer N.Dialer) error {
 	detourDialer, isDetour := common.Cast[*DetourDialer](dialer)
 	if !isDetour {
@@ -55,18 +47,12 @@ func (d *DetourDialer) Dialer() (N.Dialer, error) {
 }
 
 func (d *DetourDialer) init() {
-	var dialer adapter.Outbound
-	if d.detour != "" {
-		var loaded bool
-		dialer, loaded = d.outboundManager.Outbound(d.detour)
-		if !loaded {
-			d.initErr = E.New("outbound detour not found: ", d.detour)
-			return
-		}
-	} else {
-		dialer = d.outboundManager.Default()
+	dialer, loaded := d.outboundManager.Outbound(d.detour)
+	if !loaded {
+		d.initErr = E.New("outbound detour not found: ", d.detour)
+		return
 	}
-	if !d.defaultOutbound && !d.legacyDNSDialer {
+	if !d.legacyDNSDialer {
 		if directDialer, isDirect := dialer.(DirectDialer); isDirect {
 			if directDialer.IsEmpty() {
 				d.initErr = E.New("detour to an empty direct outbound makes no sense")

common/dialer/dialer.go

@@ -25,7 +25,6 @@ type Options struct {
 	NewDialer        bool
 	LegacyDNSDialer  bool
 	DirectOutbound   bool
-	DefaultOutbound  bool
 }
 
 // TODO: merge with NewWithOptions
@@ -43,26 +42,19 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 		dialer N.Dialer
 		err    error
 	)
-	hasDetour := dialOptions.Detour != "" || options.DefaultOutbound
 	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, options.LegacyDNSDialer)
-	} else if options.DefaultOutbound {
-		outboundManager := service.FromContext[adapter.OutboundManager](options.Context)
-		if outboundManager == nil {
-			return nil, E.New("missing outbound manager")
-		}
-		dialer = NewDefaultOutboundDetour(outboundManager)
 	} else {
 		dialer, err = NewDefault(options.Context, dialOptions)
 		if err != nil {
 			return nil, err
 		}
 	}
-	if options.RemoteIsDomain && (!hasDetour || options.ResolverOnDetour || dialOptions.DomainResolver != nil && dialOptions.DomainResolver.Server != "") {
+	if options.RemoteIsDomain && (dialOptions.Detour == "" || options.ResolverOnDetour || dialOptions.DomainResolver != nil && dialOptions.DomainResolver.Server != "") {
 		networkManager := service.FromContext[adapter.NetworkManager](options.Context)
 		dnsTransport := service.FromContext[adapter.DNSTransportManager](options.Context)
 		var defaultOptions adapter.NetworkOptions
@@ -95,12 +87,11 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 			}
 			server = dialOptions.DomainResolver.Server
 			dnsQueryOptions = adapter.DNSQueryOptions{
-				Transport:              transport,
-				Strategy:               strategy,
-				DisableCache:           dialOptions.DomainResolver.DisableCache,
-				DisableOptimisticCache: dialOptions.DomainResolver.DisableOptimisticCache,
-				RewriteTTL:             dialOptions.DomainResolver.RewriteTTL,
-				ClientSubnet:           dialOptions.DomainResolver.ClientSubnet.Build(netip.Prefix{}),
+				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 {

common/dialer/resolve.go

@@ -96,7 +96,7 @@ func (d *resolveDialer) DialContext(ctx context.Context, network string, destina
 	if err != nil {
 		return nil, err
 	}
-	if !destination.IsDomain() {
+	if !destination.IsFqdn() {
 		return d.dialer.DialContext(ctx, network, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
@@ -116,7 +116,7 @@ func (d *resolveDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 	if err != nil {
 		return nil, err
 	}
-	if !destination.IsDomain() {
+	if !destination.IsFqdn() {
 		return d.dialer.ListenPacket(ctx, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
@@ -144,7 +144,7 @@ func (d *resolveParallelNetworkDialer) DialParallelInterface(ctx context.Context
 	if err != nil {
 		return nil, err
 	}
-	if !destination.IsDomain() {
+	if !destination.IsFqdn() {
 		return d.dialer.DialContext(ctx, network, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
@@ -167,7 +167,7 @@ func (d *resolveParallelNetworkDialer) ListenSerialInterfacePacket(ctx context.C
 	if err != nil {
 		return nil, err
 	}
-	if !destination.IsDomain() {
+	if !destination.IsFqdn() {
 		return d.dialer.ListenPacket(ctx, destination)
 	}
 	ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)

common/httpclient/client.go

@@ -1,154 +0,0 @@
-package httpclient
-
-import (
-	"context"
-	"io"
-	"net/http"
-	"time"
-
-	"github.com/sagernet/sing-box/common/dialer"
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	N "github.com/sagernet/sing/common/network"
-)
-
-type httpTransport interface {
-	http.RoundTripper
-	CloseIdleConnections()
-	Clone() httpTransport
-}
-
-type Client struct {
-	transport httpTransport
-	headers   http.Header
-	host      string
-	tag       string
-}
-
-func NewClient(ctx context.Context, logger logger.ContextLogger, tag string, options option.HTTPClientOptions) (*Client, error) {
-	rawDialer, err := dialer.NewWithOptions(dialer.Options{
-		Context:          ctx,
-		Options:          options.DialerOptions,
-		RemoteIsDomain:   true,
-		ResolverOnDetour: options.ResolveOnDetour,
-		NewDialer:        options.ResolveOnDetour,
-		DefaultOutbound:  options.DefaultOutbound,
-	})
-	if err != nil {
-		return nil, err
-	}
-	tlsOptions := common.PtrValueOrDefault(options.TLS)
-	tlsOptions.Enabled = true
-	baseTLSConfig, err := tls.NewClientWithOptions(tls.ClientOptions{
-		Context:              ctx,
-		Logger:               logger,
-		Options:              tlsOptions,
-		AllowEmptyServerName: true,
-	})
-	if err != nil {
-		return nil, err
-	}
-	return NewClientWithDialer(rawDialer, baseTLSConfig, tag, options)
-}
-
-func NewClientWithDialer(rawDialer N.Dialer, baseTLSConfig tls.Config, tag string, options option.HTTPClientOptions) (*Client, error) {
-	headers := options.Headers.Build()
-	host := headers.Get("Host")
-	headers.Del("Host")
-	transport, err := newTransport(rawDialer, baseTLSConfig, options)
-	if err != nil {
-		return nil, err
-	}
-	return &Client{
-		transport: transport,
-		headers:   headers,
-		host:      host,
-		tag:       tag,
-	}, nil
-}
-
-func newTransport(rawDialer N.Dialer, baseTLSConfig tls.Config, options option.HTTPClientOptions) (httpTransport, error) {
-	version := options.Version
-	if version == 0 {
-		version = 2
-	}
-	fallbackDelay := time.Duration(options.DialerOptions.FallbackDelay)
-	if fallbackDelay == 0 {
-		fallbackDelay = 300 * time.Millisecond
-	}
-	var transport httpTransport
-	var err error
-	switch version {
-	case 1:
-		transport = newHTTP1Transport(rawDialer, baseTLSConfig)
-	case 2:
-		if options.DisableVersionFallback {
-			transport, err = newHTTP2Transport(rawDialer, baseTLSConfig, options.HTTP2Options)
-		} else {
-			transport, err = newHTTP2FallbackTransport(rawDialer, baseTLSConfig, options.HTTP2Options)
-		}
-	case 3:
-		if baseTLSConfig != nil {
-			_, err = baseTLSConfig.STDConfig()
-			if err != nil {
-				return nil, err
-			}
-		}
-		if options.DisableVersionFallback {
-			transport, err = newHTTP3Transport(rawDialer, baseTLSConfig, options.HTTP3Options)
-		} else {
-			var h2Fallback httpTransport
-			h2Fallback, err = newHTTP2FallbackTransport(rawDialer, baseTLSConfig, options.HTTP2Options)
-			if err != nil {
-				return nil, err
-			}
-			transport, err = newHTTP3FallbackTransport(rawDialer, baseTLSConfig, h2Fallback, options.HTTP3Options, fallbackDelay)
-		}
-	default:
-		return nil, E.New("unknown HTTP version: ", version)
-	}
-	if err != nil {
-		return nil, err
-	}
-	return transport, nil
-}
-
-func (c *Client) RoundTrip(request *http.Request) (*http.Response, error) {
-	if c.tag == "" && len(c.headers) == 0 && c.host == "" {
-		return c.transport.RoundTrip(request)
-	}
-	if c.tag != "" {
-		if transportTag, loaded := transportTagFromContext(request.Context()); loaded && transportTag == c.tag {
-			return nil, E.New("HTTP request loopback in transport[", c.tag, "]")
-		}
-		request = request.Clone(contextWithTransportTag(request.Context(), c.tag))
-	} else {
-		request = request.Clone(request.Context())
-	}
-	applyHeaders(request, c.headers, c.host)
-	return c.transport.RoundTrip(request)
-}
-
-func (c *Client) CloseIdleConnections() {
-	c.transport.CloseIdleConnections()
-}
-
-func (c *Client) Clone() *Client {
-	return &Client{
-		transport: c.transport.Clone(),
-		headers:   c.headers.Clone(),
-		host:      c.host,
-		tag:       c.tag,
-	}
-}
-
-func (c *Client) Close() error {
-	c.CloseIdleConnections()
-	if closer, isCloser := c.transport.(io.Closer); isCloser {
-		return closer.Close()
-	}
-	return nil
-}

common/httpclient/context.go

@@ -1,14 +0,0 @@
-package httpclient
-
-import "context"
-
-type transportKey struct{}
-
-func contextWithTransportTag(ctx context.Context, transportTag string) context.Context {
-	return context.WithValue(ctx, transportKey{}, transportTag)
-}
-
-func transportTagFromContext(ctx context.Context) (string, bool) {
-	value, loaded := ctx.Value(transportKey{}).(string)
-	return value, loaded
-}

common/httpclient/helpers.go

@@ -1,86 +0,0 @@
-package httpclient
-
-import (
-	"context"
-	stdTLS "crypto/tls"
-	"io"
-	"net"
-	"net/http"
-	"strings"
-
-	"github.com/sagernet/sing-box/common/tls"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func dialTLS(ctx context.Context, rawDialer N.Dialer, baseTLSConfig tls.Config, destination M.Socksaddr, nextProtos []string, expectProto string) (net.Conn, error) {
-	if baseTLSConfig == nil {
-		return nil, E.New("TLS transport unavailable")
-	}
-	tlsConfig := baseTLSConfig.Clone()
-	if tlsConfig.ServerName() == "" && destination.IsValid() {
-		tlsConfig.SetServerName(destination.AddrString())
-	}
-	tlsConfig.SetNextProtos(nextProtos)
-	conn, err := rawDialer.DialContext(ctx, N.NetworkTCP, destination)
-	if err != nil {
-		return nil, err
-	}
-	tlsConn, err := tls.ClientHandshake(ctx, conn, tlsConfig)
-	if err != nil {
-		conn.Close()
-		return nil, err
-	}
-	if expectProto != "" && tlsConn.ConnectionState().NegotiatedProtocol != expectProto {
-		tlsConn.Close()
-		return nil, errHTTP2Fallback
-	}
-	return tlsConn, nil
-}
-
-func applyHeaders(request *http.Request, headers http.Header, host string) {
-	for header, values := range headers {
-		request.Header[header] = append([]string(nil), values...)
-	}
-	if host != "" {
-		request.Host = host
-	}
-}
-
-func requestRequiresHTTP1(request *http.Request) bool {
-	return strings.Contains(strings.ToLower(request.Header.Get("Connection")), "upgrade") &&
-		strings.EqualFold(request.Header.Get("Upgrade"), "websocket")
-}
-
-func requestReplayable(request *http.Request) bool {
-	return request.Body == nil || request.Body == http.NoBody || request.GetBody != nil
-}
-
-func cloneRequestForRetry(request *http.Request) *http.Request {
-	cloned := request.Clone(request.Context())
-	if request.Body != nil && request.Body != http.NoBody && request.GetBody != nil {
-		cloned.Body = mustGetBody(request)
-	}
-	return cloned
-}
-
-func mustGetBody(request *http.Request) io.ReadCloser {
-	body, err := request.GetBody()
-	if err != nil {
-		panic(err)
-	}
-	return body
-}
-
-func buildSTDTLSConfig(baseTLSConfig tls.Config, destination M.Socksaddr, nextProtos []string) (*stdTLS.Config, error) {
-	if baseTLSConfig == nil {
-		return nil, nil
-	}
-	tlsConfig := baseTLSConfig.Clone()
-	if tlsConfig.ServerName() == "" && destination.IsValid() {
-		tlsConfig.SetServerName(destination.AddrString())
-	}
-	tlsConfig.SetNextProtos(nextProtos)
-	return tlsConfig.STDConfig()
-}

common/httpclient/http1_transport.go

@@ -1,41 +0,0 @@
-package httpclient
-
-import (
-	"context"
-	"net"
-	"net/http"
-
-	"github.com/sagernet/sing-box/common/tls"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-)
-
-type http1Transport struct {
-	transport *http.Transport
-}
-
-func newHTTP1Transport(rawDialer N.Dialer, baseTLSConfig tls.Config) *http1Transport {
-	transport := &http.Transport{
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			return rawDialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
-		},
-	}
-	if baseTLSConfig != nil {
-		transport.DialTLSContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
-			return dialTLS(ctx, rawDialer, baseTLSConfig, M.ParseSocksaddr(addr), []string{"http/1.1"}, "")
-		}
-	}
-	return &http1Transport{transport: transport}
-}
-
-func (t *http1Transport) RoundTrip(request *http.Request) (*http.Response, error) {
-	return t.transport.RoundTrip(request)
-}
-
-func (t *http1Transport) CloseIdleConnections() {
-	t.transport.CloseIdleConnections()
-}
-
-func (t *http1Transport) Clone() httpTransport {
-	return &http1Transport{transport: t.transport.Clone()}
-}

common/httpclient/http2_config.go

@@ -1,42 +0,0 @@
-package httpclient
-
-import (
-	stdTLS "crypto/tls"
-	"net/http"
-	"time"
-
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-
-	"golang.org/x/net/http2"
-)
-
-func CloneHTTP2Transport(transport *http2.Transport) *http2.Transport {
-	return &http2.Transport{
-		ReadIdleTimeout: transport.ReadIdleTimeout,
-		PingTimeout:     transport.PingTimeout,
-		DialTLSContext:  transport.DialTLSContext,
-	}
-}
-
-func ConfigureHTTP2Transport(options option.HTTP2Options) (*http2.Transport, error) {
-	stdTransport := &http.Transport{
-		TLSClientConfig: &stdTLS.Config{},
-		HTTP2: &http.HTTP2Config{
-			MaxReceiveBufferPerStream:     int(options.StreamReceiveWindow.Value()),
-			MaxReceiveBufferPerConnection: int(options.ConnectionReceiveWindow.Value()),
-			MaxConcurrentStreams:          options.MaxConcurrentStreams,
-			SendPingTimeout:               time.Duration(options.KeepAlivePeriod),
-			PingTimeout:                   time.Duration(options.IdleTimeout),
-		},
-	}
-	h2Transport, err := http2.ConfigureTransports(stdTransport)
-	if err != nil {
-		return nil, E.Cause(err, "configure HTTP/2 transport")
-	}
-	// ConfigureTransports binds ConnPool to the throwaway http.Transport; sever it so DialTLSContext is used directly.
-	h2Transport.ConnPool = nil
-	h2Transport.ReadIdleTimeout = time.Duration(options.KeepAlivePeriod)
-	h2Transport.PingTimeout = time.Duration(options.IdleTimeout)
-	return h2Transport, nil
-}

common/httpclient/http2_fallback_transport.go

@@ -1,87 +0,0 @@
-package httpclient
-
-import (
-	"context"
-	stdTLS "crypto/tls"
-	"errors"
-	"net"
-	"net/http"
-	"sync/atomic"
-
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-
-	"golang.org/x/net/http2"
-)
-
-var errHTTP2Fallback = E.New("fallback to HTTP/1.1")
-
-type http2FallbackTransport struct {
-	h2Transport *http2.Transport
-	h1Transport *http1Transport
-	h2Fallback  *atomic.Bool
-}
-
-func newHTTP2FallbackTransport(rawDialer N.Dialer, baseTLSConfig tls.Config, options option.HTTP2Options) (*http2FallbackTransport, error) {
-	h1 := newHTTP1Transport(rawDialer, baseTLSConfig)
-	var fallback atomic.Bool
-	h2Transport, err := ConfigureHTTP2Transport(options)
-	if err != nil {
-		return nil, err
-	}
-	h2Transport.DialTLSContext = func(ctx context.Context, network, addr string, _ *stdTLS.Config) (net.Conn, error) {
-		conn, dialErr := dialTLS(ctx, rawDialer, baseTLSConfig, M.ParseSocksaddr(addr), []string{http2.NextProtoTLS, "http/1.1"}, http2.NextProtoTLS)
-		if dialErr != nil {
-			if errors.Is(dialErr, errHTTP2Fallback) {
-				fallback.Store(true)
-			}
-			return nil, dialErr
-		}
-		return conn, nil
-	}
-	return &http2FallbackTransport{
-		h2Transport: h2Transport,
-		h1Transport: h1,
-		h2Fallback:  &fallback,
-	}, nil
-}
-
-func (t *http2FallbackTransport) RoundTrip(request *http.Request) (*http.Response, error) {
-	return t.roundTrip(request, true)
-}
-
-func (t *http2FallbackTransport) roundTrip(request *http.Request, allowHTTP1Fallback bool) (*http.Response, error) {
-	if request.URL.Scheme != "https" || requestRequiresHTTP1(request) {
-		return t.h1Transport.RoundTrip(request)
-	}
-	if t.h2Fallback.Load() {
-		if !allowHTTP1Fallback {
-			return nil, errHTTP2Fallback
-		}
-		return t.h1Transport.RoundTrip(request)
-	}
-	response, err := t.h2Transport.RoundTrip(request)
-	if err == nil {
-		return response, nil
-	}
-	if !errors.Is(err, errHTTP2Fallback) || !allowHTTP1Fallback {
-		return nil, err
-	}
-	return t.h1Transport.RoundTrip(cloneRequestForRetry(request))
-}
-
-func (t *http2FallbackTransport) CloseIdleConnections() {
-	t.h1Transport.CloseIdleConnections()
-	t.h2Transport.CloseIdleConnections()
-}
-
-func (t *http2FallbackTransport) Clone() httpTransport {
-	return &http2FallbackTransport{
-		h2Transport: CloneHTTP2Transport(t.h2Transport),
-		h1Transport: t.h1Transport.Clone().(*http1Transport),
-		h2Fallback:  t.h2Fallback,
-	}
-}

common/httpclient/http2_transport.go

@@ -1,54 +0,0 @@
-package httpclient
-
-import (
-	"context"
-	stdTLS "crypto/tls"
-	"net"
-	"net/http"
-
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing-box/option"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-
-	"golang.org/x/net/http2"
-)
-
-type http2Transport struct {
-	h2Transport *http2.Transport
-	h1Transport *http1Transport
-}
-
-func newHTTP2Transport(rawDialer N.Dialer, baseTLSConfig tls.Config, options option.HTTP2Options) (*http2Transport, error) {
-	h1 := newHTTP1Transport(rawDialer, baseTLSConfig)
-	h2Transport, err := ConfigureHTTP2Transport(options)
-	if err != nil {
-		return nil, err
-	}
-	h2Transport.DialTLSContext = func(ctx context.Context, network, addr string, _ *stdTLS.Config) (net.Conn, error) {
-		return dialTLS(ctx, rawDialer, baseTLSConfig, M.ParseSocksaddr(addr), []string{http2.NextProtoTLS}, http2.NextProtoTLS)
-	}
-	return &http2Transport{
-		h2Transport: h2Transport,
-		h1Transport: h1,
-	}, nil
-}
-
-func (t *http2Transport) RoundTrip(request *http.Request) (*http.Response, error) {
-	if request.URL.Scheme != "https" || requestRequiresHTTP1(request) {
-		return t.h1Transport.RoundTrip(request)
-	}
-	return t.h2Transport.RoundTrip(request)
-}
-
-func (t *http2Transport) CloseIdleConnections() {
-	t.h1Transport.CloseIdleConnections()
-	t.h2Transport.CloseIdleConnections()
-}
-
-func (t *http2Transport) Clone() httpTransport {
-	return &http2Transport{
-		h2Transport: CloneHTTP2Transport(t.h2Transport),
-		h1Transport: t.h1Transport.Clone().(*http1Transport),
-	}
-}

common/httpclient/http3_transport.go

@@ -1,311 +0,0 @@
-//go:build with_quic
-
-package httpclient
-
-import (
-	"context"
-	stdTLS "crypto/tls"
-	"errors"
-	"net/http"
-	"sync"
-	"time"
-
-	"github.com/sagernet/quic-go"
-	"github.com/sagernet/quic-go/http3"
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing-box/option"
-	"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"
-)
-
-type http3Transport struct {
-	h3Transport *http3.Transport
-}
-
-type http3FallbackTransport struct {
-	h3Transport   *http3.Transport
-	h2Fallback    httpTransport
-	fallbackDelay time.Duration
-	brokenAccess  sync.Mutex
-	brokenUntil   time.Time
-	brokenBackoff time.Duration
-}
-
-func newHTTP3RoundTripper(
-	rawDialer N.Dialer,
-	baseTLSConfig tls.Config,
-	options option.QUICOptions,
-) *http3.Transport {
-	var handshakeTimeout time.Duration
-	if baseTLSConfig != nil {
-		handshakeTimeout = baseTLSConfig.HandshakeTimeout()
-	}
-	quicConfig := &quic.Config{
-		InitialStreamReceiveWindow:     options.StreamReceiveWindow.Value(),
-		MaxStreamReceiveWindow:         options.StreamReceiveWindow.Value(),
-		InitialConnectionReceiveWindow: options.ConnectionReceiveWindow.Value(),
-		MaxConnectionReceiveWindow:     options.ConnectionReceiveWindow.Value(),
-		KeepAlivePeriod:                time.Duration(options.KeepAlivePeriod),
-		MaxIdleTimeout:                 time.Duration(options.IdleTimeout),
-		DisablePathMTUDiscovery:        options.DisablePathMTUDiscovery,
-	}
-	if options.InitialPacketSize > 0 {
-		quicConfig.InitialPacketSize = uint16(options.InitialPacketSize)
-	}
-	if options.MaxConcurrentStreams > 0 {
-		quicConfig.MaxIncomingStreams = int64(options.MaxConcurrentStreams)
-	}
-	if handshakeTimeout > 0 {
-		quicConfig.HandshakeIdleTimeout = handshakeTimeout
-	}
-	h3Transport := &http3.Transport{
-		TLSClientConfig: &stdTLS.Config{},
-		QUICConfig:      quicConfig,
-		Dial: func(ctx context.Context, addr string, tlsConfig *stdTLS.Config, quicConfig *quic.Config) (*quic.Conn, error) {
-			if handshakeTimeout > 0 && quicConfig.HandshakeIdleTimeout == 0 {
-				quicConfig = quicConfig.Clone()
-				quicConfig.HandshakeIdleTimeout = handshakeTimeout
-			}
-			if baseTLSConfig != nil {
-				var err error
-				tlsConfig, err = buildSTDTLSConfig(baseTLSConfig, M.ParseSocksaddr(addr), []string{http3.NextProtoH3})
-				if err != nil {
-					return nil, err
-				}
-			} else {
-				tlsConfig = tlsConfig.Clone()
-				tlsConfig.NextProtos = []string{http3.NextProtoH3}
-			}
-			conn, err := rawDialer.DialContext(ctx, N.NetworkUDP, M.ParseSocksaddr(addr))
-			if err != nil {
-				return nil, err
-			}
-			quicConn, err := quic.DialEarly(ctx, bufio.NewUnbindPacketConn(conn), conn.RemoteAddr(), tlsConfig, quicConfig)
-			if err != nil {
-				conn.Close()
-				return nil, err
-			}
-			return quicConn, nil
-		},
-	}
-	return h3Transport
-}
-
-func newHTTP3Transport(
-	rawDialer N.Dialer,
-	baseTLSConfig tls.Config,
-	options option.QUICOptions,
-) (httpTransport, error) {
-	return &http3Transport{
-		h3Transport: newHTTP3RoundTripper(rawDialer, baseTLSConfig, options),
-	}, nil
-}
-
-func newHTTP3FallbackTransport(
-	rawDialer N.Dialer,
-	baseTLSConfig tls.Config,
-	h2Fallback httpTransport,
-	options option.QUICOptions,
-	fallbackDelay time.Duration,
-) (httpTransport, error) {
-	return &http3FallbackTransport{
-		h3Transport:   newHTTP3RoundTripper(rawDialer, baseTLSConfig, options),
-		h2Fallback:    h2Fallback,
-		fallbackDelay: fallbackDelay,
-	}, nil
-}
-
-func (t *http3Transport) RoundTrip(request *http.Request) (*http.Response, error) {
-	return t.h3Transport.RoundTrip(request)
-}
-
-func (t *http3Transport) CloseIdleConnections() {
-	t.h3Transport.CloseIdleConnections()
-}
-
-func (t *http3Transport) Close() error {
-	t.CloseIdleConnections()
-	return t.h3Transport.Close()
-}
-
-func (t *http3Transport) Clone() httpTransport {
-	return &http3Transport{
-		h3Transport: t.h3Transport,
-	}
-}
-
-func (t *http3FallbackTransport) RoundTrip(request *http.Request) (*http.Response, error) {
-	if request.URL.Scheme != "https" || requestRequiresHTTP1(request) {
-		return t.h2Fallback.RoundTrip(request)
-	}
-	return t.roundTripHTTP3(request)
-}
-
-func (t *http3FallbackTransport) roundTripHTTP3(request *http.Request) (*http.Response, error) {
-	if t.h3Broken() {
-		return t.h2FallbackRoundTrip(request)
-	}
-	response, err := t.h3Transport.RoundTripOpt(request, http3.RoundTripOpt{OnlyCachedConn: true})
-	if err == nil {
-		t.clearH3Broken()
-		return response, nil
-	}
-	if !errors.Is(err, http3.ErrNoCachedConn) {
-		t.markH3Broken()
-		return t.h2FallbackRoundTrip(cloneRequestForRetry(request))
-	}
-	if !requestReplayable(request) {
-		response, err = t.h3Transport.RoundTrip(request)
-		if err == nil {
-			t.clearH3Broken()
-			return response, nil
-		}
-		t.markH3Broken()
-		return nil, err
-	}
-	return t.roundTripHTTP3Race(request)
-}
-
-func (t *http3FallbackTransport) roundTripHTTP3Race(request *http.Request) (*http.Response, error) {
-	ctx, cancel := context.WithCancel(request.Context())
-	defer cancel()
-	type result struct {
-		response *http.Response
-		err      error
-		h3       bool
-	}
-	results := make(chan result, 2)
-	startRoundTrip := func(request *http.Request, useH3 bool) {
-		request = request.WithContext(ctx)
-		var (
-			response *http.Response
-			err      error
-		)
-		if useH3 {
-			response, err = t.h3Transport.RoundTrip(request)
-		} else {
-			response, err = t.h2FallbackRoundTrip(request)
-		}
-		results <- result{response: response, err: err, h3: useH3}
-	}
-	goroutines := 1
-	received := 0
-	drainRemaining := func() {
-		cancel()
-		for range goroutines - received {
-			go func() {
-				loser := <-results
-				if loser.response != nil && loser.response.Body != nil {
-					loser.response.Body.Close()
-				}
-			}()
-		}
-	}
-	go startRoundTrip(cloneRequestForRetry(request), true)
-	timer := time.NewTimer(t.fallbackDelay)
-	defer timer.Stop()
-	var (
-		h3Err       error
-		fallbackErr error
-	)
-	for {
-		select {
-		case <-timer.C:
-			if goroutines == 1 {
-				goroutines++
-				go startRoundTrip(cloneRequestForRetry(request), false)
-			}
-		case raceResult := <-results:
-			received++
-			if raceResult.err == nil {
-				if raceResult.h3 {
-					t.clearH3Broken()
-				}
-				drainRemaining()
-				return raceResult.response, nil
-			}
-			if raceResult.h3 {
-				t.markH3Broken()
-				h3Err = raceResult.err
-				if goroutines == 1 {
-					goroutines++
-					if !timer.Stop() {
-						select {
-						case <-timer.C:
-						default:
-						}
-					}
-					go startRoundTrip(cloneRequestForRetry(request), false)
-				}
-			} else {
-				fallbackErr = raceResult.err
-			}
-			if received < goroutines {
-				continue
-			}
-			drainRemaining()
-			switch {
-			case h3Err != nil && fallbackErr != nil:
-				return nil, E.Errors(h3Err, fallbackErr)
-			case fallbackErr != nil:
-				return nil, fallbackErr
-			default:
-				return nil, h3Err
-			}
-		}
-	}
-}
-
-func (t *http3FallbackTransport) h2FallbackRoundTrip(request *http.Request) (*http.Response, error) {
-	if fallback, isFallback := t.h2Fallback.(*http2FallbackTransport); isFallback {
-		return fallback.roundTrip(request, true)
-	}
-	return t.h2Fallback.RoundTrip(request)
-}
-
-func (t *http3FallbackTransport) CloseIdleConnections() {
-	t.h3Transport.CloseIdleConnections()
-	t.h2Fallback.CloseIdleConnections()
-}
-
-func (t *http3FallbackTransport) Close() error {
-	t.CloseIdleConnections()
-	return t.h3Transport.Close()
-}
-
-func (t *http3FallbackTransport) Clone() httpTransport {
-	return &http3FallbackTransport{
-		h3Transport:   t.h3Transport,
-		h2Fallback:    t.h2Fallback.Clone(),
-		fallbackDelay: t.fallbackDelay,
-	}
-}
-
-func (t *http3FallbackTransport) h3Broken() bool {
-	t.brokenAccess.Lock()
-	defer t.brokenAccess.Unlock()
-	return !t.brokenUntil.IsZero() && time.Now().Before(t.brokenUntil)
-}
-
-func (t *http3FallbackTransport) clearH3Broken() {
-	t.brokenAccess.Lock()
-	t.brokenUntil = time.Time{}
-	t.brokenBackoff = 0
-	t.brokenAccess.Unlock()
-}
-
-func (t *http3FallbackTransport) markH3Broken() {
-	t.brokenAccess.Lock()
-	defer t.brokenAccess.Unlock()
-	if t.brokenBackoff == 0 {
-		t.brokenBackoff = 5 * time.Minute
-	} else {
-		t.brokenBackoff *= 2
-		if t.brokenBackoff > 48*time.Hour {
-			t.brokenBackoff = 48 * time.Hour
-		}
-	}
-	t.brokenUntil = time.Now().Add(t.brokenBackoff)
-}

common/httpclient/http3_transport_stub.go

@@ -1,30 +0,0 @@
-//go:build !with_quic
-
-package httpclient
-
-import (
-	"time"
-
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func newHTTP3FallbackTransport(
-	rawDialer N.Dialer,
-	baseTLSConfig tls.Config,
-	h2Fallback httpTransport,
-	options option.QUICOptions,
-	fallbackDelay time.Duration,
-) (httpTransport, error) {
-	return nil, E.New("HTTP/3 requires building with the with_quic tag")
-}
-
-func newHTTP3Transport(
-	rawDialer N.Dialer,
-	baseTLSConfig tls.Config,
-	options option.QUICOptions,
-) (httpTransport, error) {
-	return nil, E.New("HTTP/3 requires building with the with_quic tag")
-}

common/httpclient/manager.go

@@ -1,136 +0,0 @@
-package httpclient
-
-import (
-	"context"
-	"net/http"
-	"sync"
-
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-)
-
-var (
-	_ adapter.HTTPClientManager = (*Manager)(nil)
-	_ adapter.LifecycleService  = (*Manager)(nil)
-)
-
-type Manager struct {
-	ctx                      context.Context
-	logger                   log.ContextLogger
-	access                   sync.Mutex
-	defines                  map[string]option.HTTPClient
-	clients                  map[string]*Client
-	defaultTag               string
-	defaultTransport         http.RoundTripper
-	defaultTransportFallback func() (*Client, error)
-	fallbackClient           *Client
-}
-
-func NewManager(ctx context.Context, logger log.ContextLogger, clients []option.HTTPClient, defaultHTTPClient string) *Manager {
-	defines := make(map[string]option.HTTPClient, len(clients))
-	for _, client := range clients {
-		defines[client.Tag] = client
-	}
-	defaultTag := defaultHTTPClient
-	if defaultTag == "" && len(clients) > 0 {
-		defaultTag = clients[0].Tag
-	}
-	return &Manager{
-		ctx:        ctx,
-		logger:     logger,
-		defines:    defines,
-		clients:    make(map[string]*Client),
-		defaultTag: defaultTag,
-	}
-}
-
-func (m *Manager) Initialize(defaultTransportFallback func() (*Client, error)) {
-	m.defaultTransportFallback = defaultTransportFallback
-}
-
-func (m *Manager) Name() string {
-	return "http-client"
-}
-
-func (m *Manager) Start(stage adapter.StartStage) error {
-	if stage != adapter.StartStateStart {
-		return nil
-	}
-	if m.defaultTag != "" {
-		transport, err := m.resolveShared(m.defaultTag)
-		if err != nil {
-			return E.Cause(err, "resolve default http client")
-		}
-		m.defaultTransport = transport
-	} else if m.defaultTransportFallback != nil {
-		client, err := m.defaultTransportFallback()
-		if err != nil {
-			return E.Cause(err, "create default http client")
-		}
-		m.defaultTransport = client
-		m.fallbackClient = client
-	}
-	return nil
-}
-
-func (m *Manager) DefaultTransport() http.RoundTripper {
-	return m.defaultTransport
-}
-
-func (m *Manager) ResolveTransport(logger logger.ContextLogger, options option.HTTPClientOptions) (http.RoundTripper, error) {
-	if options.Tag != "" {
-		if options.ResolveOnDetour {
-			define, loaded := m.defines[options.Tag]
-			if !loaded {
-				return nil, E.New("http_client not found: ", options.Tag)
-			}
-			resolvedOptions := define.Options()
-			resolvedOptions.ResolveOnDetour = true
-			return NewClient(m.ctx, logger, options.Tag, resolvedOptions)
-		}
-		return m.resolveShared(options.Tag)
-	}
-	return NewClient(m.ctx, logger, "", options)
-}
-
-func (m *Manager) resolveShared(tag string) (http.RoundTripper, error) {
-	m.access.Lock()
-	defer m.access.Unlock()
-	if client, loaded := m.clients[tag]; loaded {
-		return client, nil
-	}
-	define, loaded := m.defines[tag]
-	if !loaded {
-		return nil, E.New("http_client not found: ", tag)
-	}
-	client, err := NewClient(m.ctx, m.logger, tag, define.Options())
-	if err != nil {
-		return nil, E.Cause(err, "create shared http_client[", tag, "]")
-	}
-	m.clients[tag] = client
-	return client, nil
-}
-
-func (m *Manager) Close() error {
-	m.access.Lock()
-	defer m.access.Unlock()
-	if m.clients == nil {
-		return nil
-	}
-	var err error
-	for _, client := range m.clients {
-		err = E.Append(err, client.Close(), func(err error) error {
-			return E.Cause(err, "close http client")
-		})
-	}
-	if m.fallbackClient != nil {
-		err = E.Append(err, m.fallbackClient.Close(), func(err error) error {
-			return E.Cause(err, "close default http client")
-		})
-	}
-	m.clients = nil
-	return err
-}

common/ktls/ktls_read.go

@@ -12,7 +12,6 @@ import (
 	"fmt"
 	"io"
 	"net"
-	"unsafe"
 )
 
 func (c *Conn) Read(b []byte) (int, error) {
@@ -230,7 +229,7 @@ func (c *Conn) readRawRecord() (typ uint8, data []byte, err error) {
 	record := c.rawConn.RawInput.Next(recordHeaderLen + n)
 	data, typ, err = c.rawConn.In.Decrypt(record)
 	if err != nil {
-		err = c.rawConn.In.SetErrorLocked(c.sendAlert(*(*uint8)((*[2]unsafe.Pointer)(unsafe.Pointer(&err))[1])))
+		err = c.rawConn.In.SetErrorLocked(c.sendAlert(uint8(err.(tls.AlertError))))
 		return
 	}
 	return

common/listener/listener_tcp.go

@@ -37,10 +37,7 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 	if l.listenOptions.ReuseAddr {
 		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
 	}
-	if l.listenOptions.DisableTCPKeepAlive {
-		listenConfig.KeepAlive = -1
-		listenConfig.KeepAliveConfig.Enable = false
-	} else {
+	if !l.listenOptions.DisableTCPKeepAlive {
 		keepIdle := time.Duration(l.listenOptions.TCPKeepAlive)
 		if keepIdle == 0 {
 			keepIdle = C.TCPKeepAliveInitial

common/networkquality/http.go

@@ -1,142 +0,0 @@
-package networkquality
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"net/http"
-	"strings"
-
-	C "github.com/sagernet/sing-box/constant"
-	sBufio "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"
-)
-
-func FormatBitrate(bps int64) string {
-	switch {
-	case bps >= 1_000_000_000:
-		return fmt.Sprintf("%.1f Gbps", float64(bps)/1_000_000_000)
-	case bps >= 1_000_000:
-		return fmt.Sprintf("%.1f Mbps", float64(bps)/1_000_000)
-	case bps >= 1_000:
-		return fmt.Sprintf("%.1f Kbps", float64(bps)/1_000)
-	default:
-		return fmt.Sprintf("%d bps", bps)
-	}
-}
-
-func NewHTTPClient(dialer N.Dialer) *http.Client {
-	transport := &http.Transport{
-		ForceAttemptHTTP2:   true,
-		TLSHandshakeTimeout: C.TCPTimeout,
-	}
-	if dialer != nil {
-		transport.DialContext = func(ctx context.Context, network string, addr string) (net.Conn, error) {
-			return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
-		}
-	}
-	return &http.Client{Transport: transport}
-}
-
-func baseTransportFromClient(client *http.Client) (*http.Transport, error) {
-	if client == nil {
-		return nil, E.New("http client is nil")
-	}
-	if client.Transport == nil {
-		return http.DefaultTransport.(*http.Transport).Clone(), nil
-	}
-	transport, ok := client.Transport.(*http.Transport)
-	if !ok {
-		return nil, E.New("http client transport must be *http.Transport")
-	}
-	return transport.Clone(), nil
-}
-
-func newMeasurementClient(
-	baseClient *http.Client,
-	connectEndpoint string,
-	singleConnection bool,
-	disableKeepAlives bool,
-	readCounters []N.CountFunc,
-	writeCounters []N.CountFunc,
-) (*http.Client, error) {
-	transport, err := baseTransportFromClient(baseClient)
-	if err != nil {
-		return nil, err
-	}
-	transport.DisableCompression = true
-	transport.DisableKeepAlives = disableKeepAlives
-	if singleConnection {
-		transport.MaxConnsPerHost = 1
-		transport.MaxIdleConnsPerHost = 1
-		transport.MaxIdleConns = 1
-	}
-
-	baseDialContext := transport.DialContext
-	if baseDialContext == nil {
-		dialer := &net.Dialer{}
-		baseDialContext = dialer.DialContext
-	}
-	transport.DialContext = func(ctx context.Context, network string, addr string) (net.Conn, error) {
-		dialAddr := addr
-		if connectEndpoint != "" {
-			dialAddr = rewriteDialAddress(addr, connectEndpoint)
-		}
-		conn, dialErr := baseDialContext(ctx, network, dialAddr)
-		if dialErr != nil {
-			return nil, dialErr
-		}
-		if len(readCounters) > 0 || len(writeCounters) > 0 {
-			return sBufio.NewCounterConn(conn, readCounters, writeCounters), nil
-		}
-		return conn, nil
-	}
-
-	return &http.Client{
-		Transport:     transport,
-		CheckRedirect: baseClient.CheckRedirect,
-		Jar:           baseClient.Jar,
-		Timeout:       baseClient.Timeout,
-	}, nil
-}
-
-type MeasurementClientFactory func(
-	connectEndpoint string,
-	singleConnection bool,
-	disableKeepAlives bool,
-	readCounters []N.CountFunc,
-	writeCounters []N.CountFunc,
-) (*http.Client, error)
-
-func defaultMeasurementClientFactory(baseClient *http.Client) MeasurementClientFactory {
-	return func(connectEndpoint string, singleConnection, disableKeepAlives bool, readCounters, writeCounters []N.CountFunc) (*http.Client, error) {
-		return newMeasurementClient(baseClient, connectEndpoint, singleConnection, disableKeepAlives, readCounters, writeCounters)
-	}
-}
-
-func NewOptionalHTTP3Factory(dialer N.Dialer, useHTTP3 bool) (MeasurementClientFactory, error) {
-	if !useHTTP3 {
-		return nil, nil
-	}
-	return NewHTTP3MeasurementClientFactory(dialer)
-}
-
-func rewriteDialAddress(addr string, connectEndpoint string) string {
-	connectEndpoint = strings.TrimSpace(connectEndpoint)
-	host, port, err := net.SplitHostPort(addr)
-	if err != nil {
-		return addr
-	}
-	endpointHost, endpointPort, err := net.SplitHostPort(connectEndpoint)
-	if err == nil {
-		host = endpointHost
-		if endpointPort != "" {
-			port = endpointPort
-		}
-	} else if connectEndpoint != "" {
-		host = connectEndpoint
-	}
-	return net.JoinHostPort(host, port)
-}

common/networkquality/http3.go

@@ -1,55 +0,0 @@
-//go:build with_quic
-
-package networkquality
-
-import (
-	"context"
-	"crypto/tls"
-	"net"
-	"net/http"
-
-	"github.com/sagernet/quic-go"
-	"github.com/sagernet/quic-go/http3"
-	sBufio "github.com/sagernet/sing/common/bufio"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func NewHTTP3MeasurementClientFactory(dialer N.Dialer) (MeasurementClientFactory, error) {
-	// singleConnection and disableKeepAlives are not applied:
-	// HTTP/3 multiplexes streams over a single QUIC connection by default.
-	return func(connectEndpoint string, _, _ bool, readCounters, writeCounters []N.CountFunc) (*http.Client, error) {
-		transport := &http3.Transport{
-			Dial: func(ctx context.Context, addr string, tlsCfg *tls.Config, cfg *quic.Config) (*quic.Conn, error) {
-				dialAddr := addr
-				if connectEndpoint != "" {
-					dialAddr = rewriteDialAddress(addr, connectEndpoint)
-				}
-				destination := M.ParseSocksaddr(dialAddr)
-				var udpConn net.Conn
-				var dialErr error
-				if dialer != nil {
-					udpConn, dialErr = dialer.DialContext(ctx, N.NetworkUDP, destination)
-				} else {
-					var netDialer net.Dialer
-					udpConn, dialErr = netDialer.DialContext(ctx, N.NetworkUDP, destination.String())
-				}
-				if dialErr != nil {
-					return nil, dialErr
-				}
-				wrappedConn := udpConn
-				if len(readCounters) > 0 || len(writeCounters) > 0 {
-					wrappedConn = sBufio.NewCounterConn(udpConn, readCounters, writeCounters)
-				}
-				packetConn := sBufio.NewUnbindPacketConn(wrappedConn)
-				quicConn, dialErr := quic.DialEarly(ctx, packetConn, udpConn.RemoteAddr(), tlsCfg, cfg)
-				if dialErr != nil {
-					udpConn.Close()
-					return nil, dialErr
-				}
-				return quicConn, nil
-			},
-		}
-		return &http.Client{Transport: transport}, nil
-	}, nil
-}

common/networkquality/http3_stub.go

@@ -1,12 +0,0 @@
-//go:build !with_quic
-
-package networkquality
-
-import (
-	C "github.com/sagernet/sing-box/constant"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func NewHTTP3MeasurementClientFactory(dialer N.Dialer) (MeasurementClientFactory, error) {
-	return nil, C.ErrQUICNotIncluded
-}

common/process/searcher.go

@@ -14,7 +14,6 @@ import (
 
 type Searcher interface {
 	FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error)
-	Close() error
 }
 
 var ErrNotFound = E.New("process not found")
@@ -29,7 +28,7 @@ func FindProcessInfo(searcher Searcher, ctx context.Context, network string, sou
 	if err != nil {
 		return nil, err
 	}
-	if info.UserId != -1 && info.UserName == "" {
+	if info.UserId != -1 {
 		osUser, _ := user.LookupId(F.ToString(info.UserId))
 		if osUser != nil {
 			info.UserName = osUser.Username

common/process/searcher_android.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-tun"
-	"github.com/sagernet/sing/common"
 )
 
 var _ Searcher = (*androidSearcher)(nil)
@@ -19,30 +18,22 @@ func NewSearcher(config Config) (Searcher, error) {
 	return &androidSearcher{config.PackageManager}, nil
 }
 
-func (s *androidSearcher) Close() error {
-	return nil
-}
-
 func (s *androidSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	family, protocol, err := socketDiagSettings(network, source)
+	_, uid, err := resolveSocketByNetlink(network, source, destination)
 	if err != nil {
 		return nil, err
 	}
-	_, uid, err := querySocketDiagOnce(family, protocol, source)
-	if err != nil {
-		return nil, err
+	if sharedPackage, loaded := s.packageManager.SharedPackageByID(uid % 100000); loaded {
+		return &adapter.ConnectionOwner{
+			UserId:             int32(uid),
+			AndroidPackageName: sharedPackage,
+		}, nil
 	}
-	appID := uid % 100000
-	var packageNames []string
-	if sharedPackage, loaded := s.packageManager.SharedPackageByID(appID); loaded {
-		packageNames = append(packageNames, sharedPackage)
+	if packageName, loaded := s.packageManager.PackageByID(uid % 100000); loaded {
+		return &adapter.ConnectionOwner{
+			UserId:             int32(uid),
+			AndroidPackageName: packageName,
+		}, nil
 	}
-	if packages, loaded := s.packageManager.PackagesByID(appID); loaded {
-		packageNames = append(packageNames, packages...)
-	}
-	packageNames = common.Uniq(packageNames)
-	return &adapter.ConnectionOwner{
-		UserId:              int32(uid),
-		AndroidPackageNames: packageNames,
-	}, nil
+	return &adapter.ConnectionOwner{UserId: int32(uid)}, nil
 }

common/process/searcher_darwin.go

@@ -1,15 +1,19 @@
-//go:build darwin
-
 package process
 
 import (
 	"context"
+	"encoding/binary"
 	"net/netip"
+	"os"
 	"strconv"
 	"strings"
 	"syscall"
+	"unsafe"
 
 	"github.com/sagernet/sing-box/adapter"
+	N "github.com/sagernet/sing/common/network"
+
+	"golang.org/x/sys/unix"
 )
 
 var _ Searcher = (*darwinSearcher)(nil)
@@ -20,12 +24,12 @@ func NewSearcher(_ Config) (Searcher, error) {
 	return &darwinSearcher{}, nil
 }
 
-func (d *darwinSearcher) Close() error {
-	return nil
-}
-
 func (d *darwinSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	return FindDarwinConnectionOwner(network, source, destination)
+	processName, err := findProcessName(network, source.Addr(), int(source.Port()))
+	if err != nil {
+		return nil, err
+	}
+	return &adapter.ConnectionOwner{ProcessPath: processName, UserId: -1}, nil
 }
 
 var structSize = func() int {
@@ -43,3 +47,107 @@ var structSize = func() int {
 		return 384
 	}
 }()
+
+func findProcessName(network string, ip netip.Addr, port int) (string, error) {
+	var spath string
+	switch network {
+	case N.NetworkTCP:
+		spath = "net.inet.tcp.pcblist_n"
+	case N.NetworkUDP:
+		spath = "net.inet.udp.pcblist_n"
+	default:
+		return "", os.ErrInvalid
+	}
+
+	isIPv4 := ip.Is4()
+
+	value, err := unix.SysctlRaw(spath)
+	if err != nil {
+		return "", err
+	}
+
+	buf := value
+
+	// from darwin-xnu/bsd/netinet/in_pcblist.c:get_pcblist_n
+	// size/offset are round up (aligned) to 8 bytes in darwin
+	// rup8(sizeof(xinpcb_n)) + rup8(sizeof(xsocket_n)) +
+	// 2 * rup8(sizeof(xsockbuf_n)) + rup8(sizeof(xsockstat_n))
+	itemSize := structSize
+	if network == N.NetworkTCP {
+		// rup8(sizeof(xtcpcb_n))
+		itemSize += 208
+	}
+
+	var fallbackUDPProcess string
+	// skip the first xinpgen(24 bytes) block
+	for i := 24; i+itemSize <= len(buf); i += itemSize {
+		// offset of xinpcb_n and xsocket_n
+		inp, so := i, i+104
+
+		srcPort := binary.BigEndian.Uint16(buf[inp+18 : inp+20])
+		if uint16(port) != srcPort {
+			continue
+		}
+
+		// xinpcb_n.inp_vflag
+		flag := buf[inp+44]
+
+		var srcIP netip.Addr
+		srcIsIPv4 := false
+		switch {
+		case flag&0x1 > 0 && isIPv4:
+			// ipv4
+			srcIP = netip.AddrFrom4([4]byte(buf[inp+76 : inp+80]))
+			srcIsIPv4 = true
+		case flag&0x2 > 0 && !isIPv4:
+			// ipv6
+			srcIP = netip.AddrFrom16([16]byte(buf[inp+64 : inp+80]))
+		default:
+			continue
+		}
+
+		if ip == srcIP {
+			// xsocket_n.so_last_pid
+			pid := readNativeUint32(buf[so+68 : so+72])
+			return getExecPathFromPID(pid)
+		}
+
+		// udp packet connection may be not equal with srcIP
+		if network == N.NetworkUDP && srcIP.IsUnspecified() && isIPv4 == srcIsIPv4 {
+			pid := readNativeUint32(buf[so+68 : so+72])
+			fallbackUDPProcess, _ = getExecPathFromPID(pid)
+		}
+	}
+
+	if network == N.NetworkUDP && len(fallbackUDPProcess) > 0 {
+		return fallbackUDPProcess, nil
+	}
+
+	return "", ErrNotFound
+}
+
+func getExecPathFromPID(pid uint32) (string, error) {
+	const (
+		procpidpathinfo     = 0xb
+		procpidpathinfosize = 1024
+		proccallnumpidinfo  = 0x2
+	)
+	buf := make([]byte, procpidpathinfosize)
+	_, _, errno := syscall.Syscall6(
+		syscall.SYS_PROC_INFO,
+		proccallnumpidinfo,
+		uintptr(pid),
+		procpidpathinfo,
+		0,
+		uintptr(unsafe.Pointer(&buf[0])),
+		procpidpathinfosize)
+	if errno != 0 {
+		return "", errno
+	}
+
+	return unix.ByteSliceToString(buf), nil
+}
+
+func readNativeUint32(b []byte) uint32 {
+	return *(*uint32)(unsafe.Pointer(&b[0]))
+}

common/process/searcher_darwin_shared.go

@@ -1,269 +0,0 @@
-//go:build darwin
-
-package process
-
-import (
-	"encoding/binary"
-	"net/netip"
-	"os"
-	"sync"
-	"syscall"
-	"time"
-	"unsafe"
-
-	"github.com/sagernet/sing-box/adapter"
-	N "github.com/sagernet/sing/common/network"
-
-	"golang.org/x/sys/unix"
-)
-
-const (
-	darwinSnapshotTTL = 200 * time.Millisecond
-
-	darwinXinpgenSize        = 24
-	darwinXsocketOffset      = 104
-	darwinXinpcbForeignPort  = 16
-	darwinXinpcbLocalPort    = 18
-	darwinXinpcbVFlag        = 44
-	darwinXinpcbForeignAddr  = 48
-	darwinXinpcbLocalAddr    = 64
-	darwinXinpcbIPv4Addr     = 12
-	darwinXsocketUID         = 64
-	darwinXsocketLastPID     = 68
-	darwinTCPExtraStructSize = 208
-)
-
-type darwinConnectionEntry struct {
-	localAddr  netip.Addr
-	remoteAddr netip.Addr
-	localPort  uint16
-	remotePort uint16
-	pid        uint32
-	uid        int32
-}
-
-type darwinConnectionMatchKind uint8
-
-const (
-	darwinConnectionMatchExact darwinConnectionMatchKind = iota
-	darwinConnectionMatchLocalFallback
-	darwinConnectionMatchWildcardFallback
-)
-
-type darwinSnapshot struct {
-	createdAt time.Time
-	entries   []darwinConnectionEntry
-}
-
-type darwinConnectionFinder struct {
-	access    sync.Mutex
-	ttl       time.Duration
-	snapshots map[string]darwinSnapshot
-	builder   func(string) (darwinSnapshot, error)
-}
-
-var sharedDarwinConnectionFinder = newDarwinConnectionFinder(darwinSnapshotTTL)
-
-func newDarwinConnectionFinder(ttl time.Duration) *darwinConnectionFinder {
-	return &darwinConnectionFinder{
-		ttl:       ttl,
-		snapshots: make(map[string]darwinSnapshot),
-		builder:   buildDarwinSnapshot,
-	}
-}
-
-func FindDarwinConnectionOwner(network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	return sharedDarwinConnectionFinder.find(network, source, destination)
-}
-
-func (f *darwinConnectionFinder) find(network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	networkName := N.NetworkName(network)
-	source = normalizeDarwinAddrPort(source)
-	destination = normalizeDarwinAddrPort(destination)
-	var lastOwner *adapter.ConnectionOwner
-	for attempt := 0; attempt < 2; attempt++ {
-		snapshot, fromCache, err := f.loadSnapshot(networkName, attempt > 0)
-		if err != nil {
-			return nil, err
-		}
-		entry, matchKind, err := matchDarwinConnectionEntry(snapshot.entries, networkName, source, destination)
-		if err != nil {
-			if err == ErrNotFound && fromCache {
-				continue
-			}
-			return nil, err
-		}
-		if fromCache && matchKind != darwinConnectionMatchExact {
-			continue
-		}
-		owner := &adapter.ConnectionOwner{
-			UserId: entry.uid,
-		}
-		lastOwner = owner
-		if entry.pid == 0 {
-			return owner, nil
-		}
-		processPath, err := getExecPathFromPID(entry.pid)
-		if err == nil {
-			owner.ProcessPath = processPath
-			return owner, nil
-		}
-		if fromCache {
-			continue
-		}
-		return owner, nil
-	}
-	if lastOwner != nil {
-		return lastOwner, nil
-	}
-	return nil, ErrNotFound
-}
-
-func (f *darwinConnectionFinder) loadSnapshot(network string, forceRefresh bool) (darwinSnapshot, bool, error) {
-	f.access.Lock()
-	defer f.access.Unlock()
-	if !forceRefresh {
-		if snapshot, loaded := f.snapshots[network]; loaded && time.Since(snapshot.createdAt) < f.ttl {
-			return snapshot, true, nil
-		}
-	}
-	snapshot, err := f.builder(network)
-	if err != nil {
-		return darwinSnapshot{}, false, err
-	}
-	f.snapshots[network] = snapshot
-	return snapshot, false, nil
-}
-
-func buildDarwinSnapshot(network string) (darwinSnapshot, error) {
-	spath, itemSize, err := darwinSnapshotSettings(network)
-	if err != nil {
-		return darwinSnapshot{}, err
-	}
-	value, err := unix.SysctlRaw(spath)
-	if err != nil {
-		return darwinSnapshot{}, err
-	}
-	return darwinSnapshot{
-		createdAt: time.Now(),
-		entries:   parseDarwinSnapshot(value, itemSize),
-	}, nil
-}
-
-func darwinSnapshotSettings(network string) (string, int, error) {
-	itemSize := structSize
-	switch network {
-	case N.NetworkTCP:
-		return "net.inet.tcp.pcblist_n", itemSize + darwinTCPExtraStructSize, nil
-	case N.NetworkUDP:
-		return "net.inet.udp.pcblist_n", itemSize, nil
-	default:
-		return "", 0, os.ErrInvalid
-	}
-}
-
-func parseDarwinSnapshot(buf []byte, itemSize int) []darwinConnectionEntry {
-	entries := make([]darwinConnectionEntry, 0, (len(buf)-darwinXinpgenSize)/itemSize)
-	for i := darwinXinpgenSize; i+itemSize <= len(buf); i += itemSize {
-		inp := i
-		so := i + darwinXsocketOffset
-		entry, ok := parseDarwinConnectionEntry(buf[inp:so], buf[so:so+structSize-darwinXsocketOffset])
-		if ok {
-			entries = append(entries, entry)
-		}
-	}
-	return entries
-}
-
-func parseDarwinConnectionEntry(inp []byte, so []byte) (darwinConnectionEntry, bool) {
-	if len(inp) < darwinXsocketOffset || len(so) < structSize-darwinXsocketOffset {
-		return darwinConnectionEntry{}, false
-	}
-	entry := darwinConnectionEntry{
-		remotePort: binary.BigEndian.Uint16(inp[darwinXinpcbForeignPort : darwinXinpcbForeignPort+2]),
-		localPort:  binary.BigEndian.Uint16(inp[darwinXinpcbLocalPort : darwinXinpcbLocalPort+2]),
-		pid:        binary.NativeEndian.Uint32(so[darwinXsocketLastPID : darwinXsocketLastPID+4]),
-		uid:        int32(binary.NativeEndian.Uint32(so[darwinXsocketUID : darwinXsocketUID+4])),
-	}
-	flag := inp[darwinXinpcbVFlag]
-	switch {
-	case flag&0x1 != 0:
-		entry.remoteAddr = netip.AddrFrom4([4]byte(inp[darwinXinpcbForeignAddr+darwinXinpcbIPv4Addr : darwinXinpcbForeignAddr+darwinXinpcbIPv4Addr+4]))
-		entry.localAddr = netip.AddrFrom4([4]byte(inp[darwinXinpcbLocalAddr+darwinXinpcbIPv4Addr : darwinXinpcbLocalAddr+darwinXinpcbIPv4Addr+4]))
-		return entry, true
-	case flag&0x2 != 0:
-		entry.remoteAddr = netip.AddrFrom16([16]byte(inp[darwinXinpcbForeignAddr : darwinXinpcbForeignAddr+16]))
-		entry.localAddr = netip.AddrFrom16([16]byte(inp[darwinXinpcbLocalAddr : darwinXinpcbLocalAddr+16]))
-		return entry, true
-	default:
-		return darwinConnectionEntry{}, false
-	}
-}
-
-func matchDarwinConnectionEntry(entries []darwinConnectionEntry, network string, source netip.AddrPort, destination netip.AddrPort) (darwinConnectionEntry, darwinConnectionMatchKind, error) {
-	sourceAddr := source.Addr()
-	if !sourceAddr.IsValid() {
-		return darwinConnectionEntry{}, darwinConnectionMatchExact, os.ErrInvalid
-	}
-	var localFallback darwinConnectionEntry
-	var hasLocalFallback bool
-	var wildcardFallback darwinConnectionEntry
-	var hasWildcardFallback bool
-	for _, entry := range entries {
-		if entry.localPort != source.Port() || sourceAddr.BitLen() != entry.localAddr.BitLen() {
-			continue
-		}
-		if entry.localAddr == sourceAddr && destination.IsValid() && entry.remotePort == destination.Port() && entry.remoteAddr == destination.Addr() {
-			return entry, darwinConnectionMatchExact, nil
-		}
-		if !destination.IsValid() && entry.localAddr == sourceAddr {
-			return entry, darwinConnectionMatchExact, nil
-		}
-		if network != N.NetworkUDP {
-			continue
-		}
-		if !hasLocalFallback && entry.localAddr == sourceAddr {
-			hasLocalFallback = true
-			localFallback = entry
-		}
-		if !hasWildcardFallback && entry.localAddr.IsUnspecified() {
-			hasWildcardFallback = true
-			wildcardFallback = entry
-		}
-	}
-	if hasLocalFallback {
-		return localFallback, darwinConnectionMatchLocalFallback, nil
-	}
-	if hasWildcardFallback {
-		return wildcardFallback, darwinConnectionMatchWildcardFallback, nil
-	}
-	return darwinConnectionEntry{}, darwinConnectionMatchExact, ErrNotFound
-}
-
-func normalizeDarwinAddrPort(addrPort netip.AddrPort) netip.AddrPort {
-	if !addrPort.IsValid() {
-		return addrPort
-	}
-	return netip.AddrPortFrom(addrPort.Addr().Unmap(), addrPort.Port())
-}
-
-func getExecPathFromPID(pid uint32) (string, error) {
-	const (
-		procpidpathinfo     = 0xb
-		procpidpathinfosize = 1024
-		proccallnumpidinfo  = 0x2
-	)
-	buf := make([]byte, procpidpathinfosize)
-	_, _, errno := syscall.Syscall6(
-		syscall.SYS_PROC_INFO,
-		proccallnumpidinfo,
-		uintptr(pid),
-		procpidpathinfo,
-		0,
-		uintptr(unsafe.Pointer(&buf[0])),
-		procpidpathinfosize)
-	if errno != 0 {
-		return "", errno
-	}
-	return unix.ByteSliceToString(buf), nil
-}

common/process/searcher_linux.go

@@ -4,82 +4,33 @@ package process
 
 import (
 	"context"
-	"errors"
 	"net/netip"
-	"syscall"
-	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/log"
-	E "github.com/sagernet/sing/common/exceptions"
 )
 
 var _ Searcher = (*linuxSearcher)(nil)
 
 type linuxSearcher struct {
-	logger           log.ContextLogger
-	diagConns        [4]*socketDiagConn
-	processPathCache *uidProcessPathCache
+	logger log.ContextLogger
 }
 
 func NewSearcher(config Config) (Searcher, error) {
-	searcher := &linuxSearcher{
-		logger:           config.Logger,
-		processPathCache: newUIDProcessPathCache(time.Second),
-	}
-	for _, family := range []uint8{syscall.AF_INET, syscall.AF_INET6} {
-		for _, protocol := range []uint8{syscall.IPPROTO_TCP, syscall.IPPROTO_UDP} {
-			searcher.diagConns[socketDiagConnIndex(family, protocol)] = newSocketDiagConn(family, protocol)
-		}
-	}
-	return searcher, nil
-}
-
-func (s *linuxSearcher) Close() error {
-	var errs []error
-	for _, conn := range s.diagConns {
-		if conn == nil {
-			continue
-		}
-		errs = append(errs, conn.Close())
-	}
-	return E.Errors(errs...)
+	return &linuxSearcher{config.Logger}, nil
 }
 
 func (s *linuxSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	inode, uid, err := s.resolveSocketByNetlink(network, source, destination)
+	inode, uid, err := resolveSocketByNetlink(network, source, destination)
 	if err != nil {
 		return nil, err
 	}
-	processInfo := &adapter.ConnectionOwner{
-		UserId: int32(uid),
-	}
-	processPath, err := s.processPathCache.findProcessPath(inode, uid)
+	processPath, err := resolveProcessNameByProcSearch(inode, uid)
 	if err != nil {
 		s.logger.DebugContext(ctx, "find process path: ", err)
-	} else {
-		processInfo.ProcessPath = processPath
 	}
-	return processInfo, nil
-}
-
-func (s *linuxSearcher) resolveSocketByNetlink(network string, source netip.AddrPort, destination netip.AddrPort) (inode, uid uint32, err error) {
-	family, protocol, err := socketDiagSettings(network, source)
-	if err != nil {
-		return 0, 0, err
-	}
-	conn := s.diagConns[socketDiagConnIndex(family, protocol)]
-	if conn == nil {
-		return 0, 0, E.New("missing socket diag connection for family=", family, " protocol=", protocol)
-	}
-	if destination.IsValid() && source.Addr().BitLen() == destination.Addr().BitLen() {
-		inode, uid, err = conn.query(source, destination)
-		if err == nil {
-			return inode, uid, nil
-		}
-		if !errors.Is(err, ErrNotFound) {
-			return 0, 0, err
-		}
-	}
-	return querySocketDiagOnce(family, protocol, source)
+	return &adapter.ConnectionOwner{
+		UserId:      int32(uid),
+		ProcessPath: processPath,
+	}, nil
 }

common/process/searcher_linux_shared.go

@@ -3,67 +3,43 @@
 package process
 
 import (
+	"bytes"
 	"encoding/binary"
-	"errors"
+	"fmt"
+	"net"
 	"net/netip"
 	"os"
-	"path/filepath"
+	"path"
 	"strings"
-	"sync"
 	"syscall"
-	"time"
 	"unicode"
+	"unsafe"
 
-	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/contrab/freelru"
-	"github.com/sagernet/sing/contrab/maphash"
 )
 
+// from https://github.com/vishvananda/netlink/blob/bca67dfc8220b44ef582c9da4e9172bf1c9ec973/nl/nl_linux.go#L52-L62
+var nativeEndian = func() binary.ByteOrder {
+	var x uint32 = 0x01020304
+	if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
+		return binary.BigEndian
+	}
+
+	return binary.LittleEndian
+}()
+
 const (
-	sizeOfSocketDiagRequestData = 56
-	sizeOfSocketDiagRequest     = syscall.SizeofNlMsghdr + sizeOfSocketDiagRequestData
-	socketDiagResponseMinSize   = 72
-	socketDiagByFamily          = 20
-	pathProc                    = "/proc"
+	sizeOfSocketDiagRequest = syscall.SizeofNlMsghdr + 8 + 48
+	socketDiagByFamily      = 20
+	pathProc                = "/proc"
 )
 
-type socketDiagConn struct {
-	access   sync.Mutex
-	family   uint8
-	protocol uint8
-	fd       int
-}
+func resolveSocketByNetlink(network string, source netip.AddrPort, destination netip.AddrPort) (inode, uid uint32, err error) {
+	var family uint8
+	var protocol uint8
 
-type uidProcessPathCache struct {
-	cache freelru.Cache[uint32, *uidProcessPaths]
-}
-
-type uidProcessPaths struct {
-	entries map[uint32]string
-}
-
-func newSocketDiagConn(family, protocol uint8) *socketDiagConn {
-	return &socketDiagConn{
-		family:   family,
-		protocol: protocol,
-		fd:       -1,
-	}
-}
-
-func socketDiagConnIndex(family, protocol uint8) int {
-	index := 0
-	if protocol == syscall.IPPROTO_UDP {
-		index += 2
-	}
-	if family == syscall.AF_INET6 {
-		index++
-	}
-	return index
-}
-
-func socketDiagSettings(network string, source netip.AddrPort) (family, protocol uint8, err error) {
 	switch network {
 	case N.NetworkTCP:
 		protocol = syscall.IPPROTO_TCP
@@ -72,308 +48,151 @@ func socketDiagSettings(network string, source netip.AddrPort) (family, protocol
 	default:
 		return 0, 0, os.ErrInvalid
 	}
-	switch {
-	case source.Addr().Is4():
+
+	if source.Addr().Is4() {
 		family = syscall.AF_INET
-	case source.Addr().Is6():
+	} else {
 		family = syscall.AF_INET6
-	default:
-		return 0, 0, os.ErrInvalid
 	}
-	return family, protocol, nil
-}
 
-func newUIDProcessPathCache(ttl time.Duration) *uidProcessPathCache {
-	cache := common.Must1(freelru.NewSharded[uint32, *uidProcessPaths](64, maphash.NewHasher[uint32]().Hash32))
-	cache.SetLifetime(ttl)
-	return &uidProcessPathCache{cache: cache}
-}
+	req := packSocketDiagRequest(family, protocol, source)
 
-func (c *uidProcessPathCache) findProcessPath(targetInode, uid uint32) (string, error) {
-	if cached, ok := c.cache.Get(uid); ok {
-		if processPath, found := cached.entries[targetInode]; found {
-			return processPath, nil
-		}
-	}
-	processPaths, err := buildProcessPathByUIDCache(uid)
-	if err != nil {
-		return "", err
-	}
-	c.cache.Add(uid, &uidProcessPaths{entries: processPaths})
-	processPath, found := processPaths[targetInode]
-	if !found {
-		return "", E.New("process of uid(", uid, "), inode(", targetInode, ") not found")
-	}
-	return processPath, nil
-}
-
-func (c *socketDiagConn) Close() error {
-	c.access.Lock()
-	defer c.access.Unlock()
-	return c.closeLocked()
-}
-
-func (c *socketDiagConn) query(source netip.AddrPort, destination netip.AddrPort) (inode, uid uint32, err error) {
-	c.access.Lock()
-	defer c.access.Unlock()
-	request := packSocketDiagRequest(c.family, c.protocol, source, destination, false)
-	for attempt := 0; attempt < 2; attempt++ {
-		err = c.ensureOpenLocked()
-		if err != nil {
-			return 0, 0, E.Cause(err, "dial netlink")
-		}
-		inode, uid, err = querySocketDiag(c.fd, request)
-		if err == nil || errors.Is(err, ErrNotFound) {
-			return inode, uid, err
-		}
-		if !shouldRetrySocketDiag(err) {
-			return 0, 0, err
-		}
-		_ = c.closeLocked()
-	}
-	return 0, 0, err
-}
-
-func querySocketDiagOnce(family, protocol uint8, source netip.AddrPort) (inode, uid uint32, err error) {
-	fd, err := openSocketDiag()
+	socket, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_DGRAM, syscall.NETLINK_INET_DIAG)
 	if err != nil {
 		return 0, 0, E.Cause(err, "dial netlink")
 	}
-	defer syscall.Close(fd)
-	return querySocketDiag(fd, packSocketDiagRequest(family, protocol, source, netip.AddrPort{}, true))
-}
+	defer syscall.Close(socket)
 
-func (c *socketDiagConn) ensureOpenLocked() error {
-	if c.fd != -1 {
-		return nil
-	}
-	fd, err := openSocketDiag()
-	if err != nil {
-		return err
-	}
-	c.fd = fd
-	return nil
-}
+	syscall.SetsockoptTimeval(socket, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, &syscall.Timeval{Usec: 100})
+	syscall.SetsockoptTimeval(socket, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, &syscall.Timeval{Usec: 100})
 
-func openSocketDiag() (int, error) {
-	fd, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_DGRAM|syscall.SOCK_CLOEXEC, syscall.NETLINK_INET_DIAG)
-	if err != nil {
-		return -1, err
-	}
-	timeout := &syscall.Timeval{Usec: 100}
-	if err = syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, timeout); err != nil {
-		syscall.Close(fd)
-		return -1, err
-	}
-	if err = syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, timeout); err != nil {
-		syscall.Close(fd)
-		return -1, err
-	}
-	if err = syscall.Connect(fd, &syscall.SockaddrNetlink{
+	err = syscall.Connect(socket, &syscall.SockaddrNetlink{
 		Family: syscall.AF_NETLINK,
+		Pad:    0,
 		Pid:    0,
 		Groups: 0,
-	}); err != nil {
-		syscall.Close(fd)
-		return -1, err
+	})
+	if err != nil {
+		return
 	}
-	return fd, nil
-}
 
-func (c *socketDiagConn) closeLocked() error {
-	if c.fd == -1 {
-		return nil
-	}
-	err := syscall.Close(c.fd)
-	c.fd = -1
-	return err
-}
-
-func packSocketDiagRequest(family, protocol byte, source netip.AddrPort, destination netip.AddrPort, dump bool) []byte {
-	request := make([]byte, sizeOfSocketDiagRequest)
-
-	binary.NativeEndian.PutUint32(request[0:4], sizeOfSocketDiagRequest)
-	binary.NativeEndian.PutUint16(request[4:6], socketDiagByFamily)
-	flags := uint16(syscall.NLM_F_REQUEST)
-	if dump {
-		flags |= syscall.NLM_F_DUMP
-	}
-	binary.NativeEndian.PutUint16(request[6:8], flags)
-	binary.NativeEndian.PutUint32(request[8:12], 0)
-	binary.NativeEndian.PutUint32(request[12:16], 0)
-
-	request[16] = family
-	request[17] = protocol
-	request[18] = 0
-	request[19] = 0
-	if dump {
-		binary.NativeEndian.PutUint32(request[20:24], 0xFFFFFFFF)
-	}
-	requestSource := source
-	requestDestination := destination
-	if protocol == syscall.IPPROTO_UDP && !dump && destination.IsValid() {
-		// udp_dump_one expects the exact-match endpoints reversed for historical reasons.
-		requestSource, requestDestination = destination, source
-	}
-	binary.BigEndian.PutUint16(request[24:26], requestSource.Port())
-	binary.BigEndian.PutUint16(request[26:28], requestDestination.Port())
-	if family == syscall.AF_INET6 {
-		copy(request[28:44], requestSource.Addr().AsSlice())
-		if requestDestination.IsValid() {
-			copy(request[44:60], requestDestination.Addr().AsSlice())
-		}
-	} else {
-		copy(request[28:32], requestSource.Addr().AsSlice())
-		if requestDestination.IsValid() {
-			copy(request[44:48], requestDestination.Addr().AsSlice())
-		}
-	}
-	binary.NativeEndian.PutUint32(request[60:64], 0)
-	binary.NativeEndian.PutUint64(request[64:72], 0xFFFFFFFFFFFFFFFF)
-	return request
-}
-
-func querySocketDiag(fd int, request []byte) (inode, uid uint32, err error) {
-	_, err = syscall.Write(fd, request)
+	_, err = syscall.Write(socket, req)
 	if err != nil {
 		return 0, 0, E.Cause(err, "write netlink request")
 	}
-	buffer := make([]byte, 64<<10)
-	n, err := syscall.Read(fd, buffer)
+
+	buffer := buf.New()
+	defer buffer.Release()
+
+	n, err := syscall.Read(socket, buffer.FreeBytes())
 	if err != nil {
 		return 0, 0, E.Cause(err, "read netlink response")
 	}
-	messages, err := syscall.ParseNetlinkMessage(buffer[:n])
+
+	buffer.Truncate(n)
+
+	messages, err := syscall.ParseNetlinkMessage(buffer.Bytes())
 	if err != nil {
 		return 0, 0, E.Cause(err, "parse netlink message")
+	} else if len(messages) == 0 {
+		return 0, 0, E.New("unexcepted netlink response")
 	}
-	return unpackSocketDiagMessages(messages)
+
+	message := messages[0]
+	if message.Header.Type&syscall.NLMSG_ERROR != 0 {
+		return 0, 0, E.New("netlink message: NLMSG_ERROR")
+	}
+
+	inode, uid = unpackSocketDiagResponse(&messages[0])
+	return
 }
 
-func unpackSocketDiagMessages(messages []syscall.NetlinkMessage) (inode, uid uint32, err error) {
-	for _, message := range messages {
-		switch message.Header.Type {
-		case syscall.NLMSG_DONE:
-			continue
-		case syscall.NLMSG_ERROR:
-			err = unpackSocketDiagError(&message)
-			if err != nil {
-				return 0, 0, err
-			}
-		case socketDiagByFamily:
-			inode, uid = unpackSocketDiagResponse(&message)
-			if inode != 0 || uid != 0 {
-				return inode, uid, nil
-			}
-		}
-	}
-	return 0, 0, ErrNotFound
+func packSocketDiagRequest(family, protocol byte, source netip.AddrPort) []byte {
+	s := make([]byte, 16)
+	copy(s, source.Addr().AsSlice())
+
+	buf := make([]byte, sizeOfSocketDiagRequest)
+
+	nativeEndian.PutUint32(buf[0:4], sizeOfSocketDiagRequest)
+	nativeEndian.PutUint16(buf[4:6], socketDiagByFamily)
+	nativeEndian.PutUint16(buf[6:8], syscall.NLM_F_REQUEST|syscall.NLM_F_DUMP)
+	nativeEndian.PutUint32(buf[8:12], 0)
+	nativeEndian.PutUint32(buf[12:16], 0)
+
+	buf[16] = family
+	buf[17] = protocol
+	buf[18] = 0
+	buf[19] = 0
+	nativeEndian.PutUint32(buf[20:24], 0xFFFFFFFF)
+
+	binary.BigEndian.PutUint16(buf[24:26], source.Port())
+	binary.BigEndian.PutUint16(buf[26:28], 0)
+
+	copy(buf[28:44], s)
+	copy(buf[44:60], net.IPv6zero)
+
+	nativeEndian.PutUint32(buf[60:64], 0)
+	nativeEndian.PutUint64(buf[64:72], 0xFFFFFFFFFFFFFFFF)
+
+	return buf
 }
 
 func unpackSocketDiagResponse(msg *syscall.NetlinkMessage) (inode, uid uint32) {
-	if len(msg.Data) < socketDiagResponseMinSize {
+	if len(msg.Data) < 72 {
 		return 0, 0
 	}
-	uid = binary.NativeEndian.Uint32(msg.Data[64:68])
-	inode = binary.NativeEndian.Uint32(msg.Data[68:72])
-	return inode, uid
+
+	data := msg.Data
+
+	uid = nativeEndian.Uint32(data[64:68])
+	inode = nativeEndian.Uint32(data[68:72])
+
+	return
 }
 
-func unpackSocketDiagError(msg *syscall.NetlinkMessage) error {
-	if len(msg.Data) < 4 {
-		return E.New("netlink message: NLMSG_ERROR")
-	}
-	errno := int32(binary.NativeEndian.Uint32(msg.Data[:4]))
-	if errno == 0 {
-		return nil
-	}
-	if errno < 0 {
-		errno = -errno
-	}
-	sysErr := syscall.Errno(errno)
-	switch sysErr {
-	case syscall.ENOENT, syscall.ESRCH:
-		return ErrNotFound
-	default:
-		return E.New("netlink message: ", sysErr)
-	}
-}
-
-func shouldRetrySocketDiag(err error) bool {
-	return err != nil && !errors.Is(err, ErrNotFound)
-}
-
-func buildProcessPathByUIDCache(uid uint32) (map[uint32]string, error) {
+func resolveProcessNameByProcSearch(inode, uid uint32) (string, error) {
 	files, err := os.ReadDir(pathProc)
 	if err != nil {
-		return nil, err
+		return "", err
 	}
+
 	buffer := make([]byte, syscall.PathMax)
-	processPaths := make(map[uint32]string)
-	for _, file := range files {
-		if !file.IsDir() || !isPid(file.Name()) {
+	socket := []byte(fmt.Sprintf("socket:[%d]", inode))
+
+	for _, f := range files {
+		if !f.IsDir() || !isPid(f.Name()) {
 			continue
 		}
-		info, err := file.Info()
+
+		info, err := f.Info()
 		if err != nil {
-			if isIgnorableProcError(err) {
-				continue
-			}
-			return nil, err
+			return "", err
 		}
 		if info.Sys().(*syscall.Stat_t).Uid != uid {
 			continue
 		}
-		processPath := filepath.Join(pathProc, file.Name())
-		fdPath := filepath.Join(processPath, "fd")
-		exePath, err := os.Readlink(filepath.Join(processPath, "exe"))
-		if err != nil {
-			if isIgnorableProcError(err) {
-				continue
-			}
-			return nil, err
-		}
+
+		processPath := path.Join(pathProc, f.Name())
+		fdPath := path.Join(processPath, "fd")
+
 		fds, err := os.ReadDir(fdPath)
 		if err != nil {
 			continue
 		}
+
 		for _, fd := range fds {
-			n, err := syscall.Readlink(filepath.Join(fdPath, fd.Name()), buffer)
+			n, err := syscall.Readlink(path.Join(fdPath, fd.Name()), buffer)
 			if err != nil {
 				continue
 			}
-			inode, ok := parseSocketInode(buffer[:n])
-			if !ok {
-				continue
-			}
-			if _, loaded := processPaths[inode]; !loaded {
-				processPaths[inode] = exePath
+
+			if bytes.Equal(buffer[:n], socket) {
+				return os.Readlink(path.Join(processPath, "exe"))
 			}
 		}
 	}
-	return processPaths, nil
-}
 
-func isIgnorableProcError(err error) bool {
-	return os.IsNotExist(err) || os.IsPermission(err)
-}
-
-func parseSocketInode(link []byte) (uint32, bool) {
-	const socketPrefix = "socket:["
-	if len(link) <= len(socketPrefix) || string(link[:len(socketPrefix)]) != socketPrefix || link[len(link)-1] != ']' {
-		return 0, false
-	}
-	var inode uint64
-	for _, char := range link[len(socketPrefix) : len(link)-1] {
-		if char < '0' || char > '9' {
-			return 0, false
-		}
-		inode = inode*10 + uint64(char-'0')
-		if inode > uint64(^uint32(0)) {
-			return 0, false
-		}
-	}
-	return uint32(inode), true
+	return "", fmt.Errorf("process of uid(%d),inode(%d) not found", uid, inode)
 }
 
 func isPid(s string) bool {

common/process/searcher_linux_shared_test.go

@@ -1,60 +0,0 @@
-//go:build linux
-
-package process
-
-import (
-	"net"
-	"net/netip"
-	"os"
-	"syscall"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestQuerySocketDiagUDPExact(t *testing.T) {
-	t.Parallel()
-	server, err := net.ListenUDP("udp4", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
-	require.NoError(t, err)
-	defer server.Close()
-
-	client, err := net.DialUDP("udp4", nil, server.LocalAddr().(*net.UDPAddr))
-	require.NoError(t, err)
-	defer client.Close()
-
-	err = client.SetDeadline(time.Now().Add(time.Second))
-	require.NoError(t, err)
-	_, err = client.Write([]byte{0})
-	require.NoError(t, err)
-
-	err = server.SetReadDeadline(time.Now().Add(time.Second))
-	require.NoError(t, err)
-	buffer := make([]byte, 1)
-	_, _, err = server.ReadFromUDP(buffer)
-	require.NoError(t, err)
-
-	source := addrPortFromUDPAddr(t, client.LocalAddr())
-	destination := addrPortFromUDPAddr(t, client.RemoteAddr())
-
-	fd, err := openSocketDiag()
-	require.NoError(t, err)
-	defer syscall.Close(fd)
-
-	inode, uid, err := querySocketDiag(fd, packSocketDiagRequest(syscall.AF_INET, syscall.IPPROTO_UDP, source, destination, false))
-	require.NoError(t, err)
-	require.NotZero(t, inode)
-	require.EqualValues(t, os.Getuid(), uid)
-}
-
-func addrPortFromUDPAddr(t *testing.T, addr net.Addr) netip.AddrPort {
-	t.Helper()
-
-	udpAddr, ok := addr.(*net.UDPAddr)
-	require.True(t, ok)
-
-	ip, ok := netip.AddrFromSlice(udpAddr.IP)
-	require.True(t, ok)
-
-	return netip.AddrPortFrom(ip.Unmap(), uint16(udpAddr.Port))
-}

common/process/searcher_windows.go

@@ -28,10 +28,6 @@ func initWin32API() error {
 	return winiphlpapi.LoadExtendedTable()
 }
 
-func (s *windowsSearcher) Close() error {
-	return nil
-}
-
 func (s *windowsSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
 	pid, err := winiphlpapi.FindPid(network, source)
 	if err != nil {

common/srs/binary.go

@@ -46,7 +46,6 @@ const (
 	ruleItemNetworkIsConstrained
 	ruleItemNetworkInterfaceAddress
 	ruleItemDefaultInterfaceAddress
-	ruleItemPackageNameRegex
 	ruleItemFinal uint8 = 0xFF
 )
 
@@ -216,8 +215,6 @@ func readDefaultRule(reader varbin.Reader, recover bool) (rule option.DefaultHea
 			rule.ProcessPathRegex, err = readRuleItemString(reader)
 		case ruleItemPackageName:
 			rule.PackageName, err = readRuleItemString(reader)
-		case ruleItemPackageNameRegex:
-			rule.PackageNameRegex, err = readRuleItemString(reader)
 		case ruleItemWIFISSID:
 			rule.WIFISSID, err = readRuleItemString(reader)
 		case ruleItemWIFIBSSID:
@@ -397,15 +394,6 @@ func writeDefaultRule(writer varbin.Writer, rule option.DefaultHeadlessRule, gen
 			return err
 		}
 	}
-	if len(rule.PackageNameRegex) > 0 {
-		if generateVersion < C.RuleSetVersion5 {
-			return E.New("`package_name_regex` rule item is only supported in version 5 or later")
-		}
-		err = writeRuleItemString(writer, ruleItemPackageNameRegex, rule.PackageNameRegex)
-		if err != nil {
-			return err
-		}
-	}
 	if len(rule.NetworkType) > 0 {
 		if generateVersion < C.RuleSetVersion3 {
 			return E.New("`network_type` rule item is only supported in version 3 or later")

common/stun/stun.go

@@ -1,612 +0,0 @@
-package stun
-
-import (
-	"context"
-	"crypto/rand"
-	"encoding/binary"
-	"fmt"
-	"net"
-	"net/netip"
-	"time"
-
-	"github.com/sagernet/sing/common/bufio"
-	"github.com/sagernet/sing/common/bufio/deadline"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-)
-
-const (
-	DefaultServer = "stun.voipgate.com:3478"
-
-	magicCookie = 0x2112A442
-	headerSize  = 20
-
-	bindingRequest         = 0x0001
-	bindingSuccessResponse = 0x0101
-	bindingErrorResponse   = 0x0111
-
-	attrMappedAddress    = 0x0001
-	attrChangeRequest    = 0x0003
-	attrErrorCode        = 0x0009
-	attrXORMappedAddress = 0x0020
-	attrOtherAddress     = 0x802c
-
-	familyIPv4 = 0x01
-	familyIPv6 = 0x02
-
-	changeIP   = 0x04
-	changePort = 0x02
-
-	defaultRTO    = 500 * time.Millisecond
-	minRTO        = 250 * time.Millisecond
-	maxRetransmit = 2
-)
-
-type Phase int32
-
-const (
-	PhaseBinding Phase = iota
-	PhaseNATMapping
-	PhaseNATFiltering
-	PhaseDone
-)
-
-type NATMapping int32
-
-const (
-	NATMappingUnknown NATMapping = iota
-	_                            // reserved
-	NATMappingEndpointIndependent
-	NATMappingAddressDependent
-	NATMappingAddressAndPortDependent
-)
-
-func (m NATMapping) String() string {
-	switch m {
-	case NATMappingEndpointIndependent:
-		return "Endpoint Independent"
-	case NATMappingAddressDependent:
-		return "Address Dependent"
-	case NATMappingAddressAndPortDependent:
-		return "Address and Port Dependent"
-	default:
-		return "Unknown"
-	}
-}
-
-type NATFiltering int32
-
-const (
-	NATFilteringUnknown NATFiltering = iota
-	NATFilteringEndpointIndependent
-	NATFilteringAddressDependent
-	NATFilteringAddressAndPortDependent
-)
-
-func (f NATFiltering) String() string {
-	switch f {
-	case NATFilteringEndpointIndependent:
-		return "Endpoint Independent"
-	case NATFilteringAddressDependent:
-		return "Address Dependent"
-	case NATFilteringAddressAndPortDependent:
-		return "Address and Port Dependent"
-	default:
-		return "Unknown"
-	}
-}
-
-type TransactionID [12]byte
-
-type Options struct {
-	Server     string
-	Dialer     N.Dialer
-	Context    context.Context
-	OnProgress func(Progress)
-}
-
-type Progress struct {
-	Phase        Phase
-	ExternalAddr string
-	LatencyMs    int32
-	NATMapping   NATMapping
-	NATFiltering NATFiltering
-}
-
-type Result struct {
-	ExternalAddr     string
-	LatencyMs        int32
-	NATMapping       NATMapping
-	NATFiltering     NATFiltering
-	NATTypeSupported bool
-}
-
-type parsedResponse struct {
-	xorMappedAddr netip.AddrPort
-	mappedAddr    netip.AddrPort
-	otherAddr     netip.AddrPort
-}
-
-func (r *parsedResponse) externalAddr() (netip.AddrPort, bool) {
-	if r.xorMappedAddr.IsValid() {
-		return r.xorMappedAddr, true
-	}
-	if r.mappedAddr.IsValid() {
-		return r.mappedAddr, true
-	}
-	return netip.AddrPort{}, false
-}
-
-type stunAttribute struct {
-	typ   uint16
-	value []byte
-}
-
-func newTransactionID() TransactionID {
-	var id TransactionID
-	_, _ = rand.Read(id[:])
-	return id
-}
-
-func buildBindingRequest(txID TransactionID, attrs ...stunAttribute) []byte {
-	attrLen := 0
-	for _, attr := range attrs {
-		attrLen += 4 + len(attr.value) + paddingLen(len(attr.value))
-	}
-
-	buf := make([]byte, headerSize+attrLen)
-	binary.BigEndian.PutUint16(buf[0:2], bindingRequest)
-	binary.BigEndian.PutUint16(buf[2:4], uint16(attrLen))
-	binary.BigEndian.PutUint32(buf[4:8], magicCookie)
-	copy(buf[8:20], txID[:])
-
-	offset := headerSize
-	for _, attr := range attrs {
-		binary.BigEndian.PutUint16(buf[offset:offset+2], attr.typ)
-		binary.BigEndian.PutUint16(buf[offset+2:offset+4], uint16(len(attr.value)))
-		copy(buf[offset+4:offset+4+len(attr.value)], attr.value)
-		offset += 4 + len(attr.value) + paddingLen(len(attr.value))
-	}
-
-	return buf
-}
-
-func changeRequestAttr(flags byte) stunAttribute {
-	return stunAttribute{
-		typ:   attrChangeRequest,
-		value: []byte{0, 0, 0, flags},
-	}
-}
-
-func parseResponse(data []byte, expectedTxID TransactionID) (*parsedResponse, error) {
-	if len(data) < headerSize {
-		return nil, E.New("response too short")
-	}
-
-	msgType := binary.BigEndian.Uint16(data[0:2])
-	if msgType&0xC000 != 0 {
-		return nil, E.New("invalid STUN message: top 2 bits not zero")
-	}
-
-	cookie := binary.BigEndian.Uint32(data[4:8])
-	if cookie != magicCookie {
-		return nil, E.New("invalid magic cookie")
-	}
-
-	var txID TransactionID
-	copy(txID[:], data[8:20])
-	if txID != expectedTxID {
-		return nil, E.New("transaction ID mismatch")
-	}
-
-	msgLen := int(binary.BigEndian.Uint16(data[2:4]))
-	if msgLen > len(data)-headerSize {
-		return nil, E.New("message length exceeds data")
-	}
-
-	attrData := data[headerSize : headerSize+msgLen]
-
-	if msgType == bindingErrorResponse {
-		return nil, parseErrorResponse(attrData)
-	}
-	if msgType != bindingSuccessResponse {
-		return nil, E.New("unexpected message type: ", fmt.Sprintf("0x%04x", msgType))
-	}
-
-	resp := &parsedResponse{}
-	offset := 0
-	for offset+4 <= len(attrData) {
-		attrType := binary.BigEndian.Uint16(attrData[offset : offset+2])
-		attrLen := int(binary.BigEndian.Uint16(attrData[offset+2 : offset+4]))
-		if offset+4+attrLen > len(attrData) {
-			break
-		}
-		attrValue := attrData[offset+4 : offset+4+attrLen]
-
-		switch attrType {
-		case attrXORMappedAddress:
-			addr, err := parseXORMappedAddress(attrValue, txID)
-			if err == nil {
-				resp.xorMappedAddr = addr
-			}
-		case attrMappedAddress:
-			addr, err := parseMappedAddress(attrValue)
-			if err == nil {
-				resp.mappedAddr = addr
-			}
-		case attrOtherAddress:
-			addr, err := parseMappedAddress(attrValue)
-			if err == nil {
-				resp.otherAddr = addr
-			}
-		}
-
-		offset += 4 + attrLen + paddingLen(attrLen)
-	}
-
-	return resp, nil
-}
-
-func parseErrorResponse(data []byte) error {
-	offset := 0
-	for offset+4 <= len(data) {
-		attrType := binary.BigEndian.Uint16(data[offset : offset+2])
-		attrLen := int(binary.BigEndian.Uint16(data[offset+2 : offset+4]))
-		if offset+4+attrLen > len(data) {
-			break
-		}
-		if attrType == attrErrorCode && attrLen >= 4 {
-			attrValue := data[offset+4 : offset+4+attrLen]
-			class := int(attrValue[2] & 0x07)
-			number := int(attrValue[3])
-			code := class*100 + number
-			if attrLen > 4 {
-				return E.New("STUN error ", code, ": ", string(attrValue[4:]))
-			}
-			return E.New("STUN error ", code)
-		}
-		offset += 4 + attrLen + paddingLen(attrLen)
-	}
-	return E.New("STUN error response")
-}
-
-func parseXORMappedAddress(data []byte, txID TransactionID) (netip.AddrPort, error) {
-	if len(data) < 4 {
-		return netip.AddrPort{}, E.New("XOR-MAPPED-ADDRESS too short")
-	}
-
-	family := data[1]
-	xPort := binary.BigEndian.Uint16(data[2:4])
-	port := xPort ^ uint16(magicCookie>>16)
-
-	switch family {
-	case familyIPv4:
-		if len(data) < 8 {
-			return netip.AddrPort{}, E.New("XOR-MAPPED-ADDRESS IPv4 too short")
-		}
-		var ip [4]byte
-		binary.BigEndian.PutUint32(ip[:], binary.BigEndian.Uint32(data[4:8])^magicCookie)
-		return netip.AddrPortFrom(netip.AddrFrom4(ip), port), nil
-	case familyIPv6:
-		if len(data) < 20 {
-			return netip.AddrPort{}, E.New("XOR-MAPPED-ADDRESS IPv6 too short")
-		}
-		var ip [16]byte
-		var xorKey [16]byte
-		binary.BigEndian.PutUint32(xorKey[0:4], magicCookie)
-		copy(xorKey[4:16], txID[:])
-		for i := range 16 {
-			ip[i] = data[4+i] ^ xorKey[i]
-		}
-		return netip.AddrPortFrom(netip.AddrFrom16(ip), port), nil
-	default:
-		return netip.AddrPort{}, E.New("unknown address family: ", family)
-	}
-}
-
-func parseMappedAddress(data []byte) (netip.AddrPort, error) {
-	if len(data) < 4 {
-		return netip.AddrPort{}, E.New("MAPPED-ADDRESS too short")
-	}
-
-	family := data[1]
-	port := binary.BigEndian.Uint16(data[2:4])
-
-	switch family {
-	case familyIPv4:
-		if len(data) < 8 {
-			return netip.AddrPort{}, E.New("MAPPED-ADDRESS IPv4 too short")
-		}
-		return netip.AddrPortFrom(
-			netip.AddrFrom4([4]byte{data[4], data[5], data[6], data[7]}), port,
-		), nil
-	case familyIPv6:
-		if len(data) < 20 {
-			return netip.AddrPort{}, E.New("MAPPED-ADDRESS IPv6 too short")
-		}
-		var ip [16]byte
-		copy(ip[:], data[4:20])
-		return netip.AddrPortFrom(netip.AddrFrom16(ip), port), nil
-	default:
-		return netip.AddrPort{}, E.New("unknown address family: ", family)
-	}
-}
-
-func roundTrip(conn net.PacketConn, addr net.Addr, txID TransactionID, attrs []stunAttribute, rto time.Duration) (*parsedResponse, time.Duration, error) {
-	request := buildBindingRequest(txID, attrs...)
-	currentRTO := rto
-	retransmitCount := 0
-
-	sendTime := time.Now()
-	_, err := conn.WriteTo(request, addr)
-	if err != nil {
-		return nil, 0, E.Cause(err, "send STUN request")
-	}
-
-	buf := make([]byte, 1024)
-	for {
-		err = conn.SetReadDeadline(sendTime.Add(currentRTO))
-		if err != nil {
-			return nil, 0, E.Cause(err, "set read deadline")
-		}
-
-		n, _, readErr := conn.ReadFrom(buf)
-		if readErr != nil {
-			if E.IsTimeout(readErr) && retransmitCount < maxRetransmit {
-				retransmitCount++
-				currentRTO *= 2
-				sendTime = time.Now()
-				_, err = conn.WriteTo(request, addr)
-				if err != nil {
-					return nil, 0, E.Cause(err, "retransmit STUN request")
-				}
-				continue
-			}
-			return nil, 0, E.Cause(readErr, "read STUN response")
-		}
-
-		if n < headerSize || buf[0]&0xC0 != 0 ||
-			binary.BigEndian.Uint32(buf[4:8]) != magicCookie {
-			continue
-		}
-		var receivedTxID TransactionID
-		copy(receivedTxID[:], buf[8:20])
-		if receivedTxID != txID {
-			continue
-		}
-
-		latency := time.Since(sendTime)
-
-		resp, parseErr := parseResponse(buf[:n], txID)
-		if parseErr != nil {
-			return nil, 0, parseErr
-		}
-
-		return resp, latency, nil
-	}
-}
-
-func Run(options Options) (*Result, error) {
-	ctx := options.Context
-	if ctx == nil {
-		ctx = context.Background()
-	}
-
-	server := options.Server
-	if server == "" {
-		server = DefaultServer
-	}
-	serverSocksaddr := M.ParseSocksaddr(server)
-	if serverSocksaddr.Port == 0 {
-		serverSocksaddr.Port = 3478
-	}
-
-	reportProgress := options.OnProgress
-	if reportProgress == nil {
-		reportProgress = func(Progress) {}
-	}
-
-	var (
-		packetConn net.PacketConn
-		serverAddr net.Addr
-		err        error
-	)
-
-	if options.Dialer != nil {
-		packetConn, err = options.Dialer.ListenPacket(ctx, serverSocksaddr)
-		if err != nil {
-			return nil, E.Cause(err, "create UDP socket")
-		}
-		serverAddr = serverSocksaddr
-	} else {
-		serverUDPAddr, resolveErr := net.ResolveUDPAddr("udp", serverSocksaddr.String())
-		if resolveErr != nil {
-			return nil, E.Cause(resolveErr, "resolve STUN server")
-		}
-		packetConn, err = net.ListenPacket("udp", "")
-		if err != nil {
-			return nil, E.Cause(err, "create UDP socket")
-		}
-		serverAddr = serverUDPAddr
-	}
-	defer func() {
-		_ = packetConn.Close()
-	}()
-	if deadline.NeedAdditionalReadDeadline(packetConn) {
-		packetConn = deadline.NewPacketConn(bufio.NewPacketConn(packetConn))
-	}
-
-	select {
-	case <-ctx.Done():
-		return nil, ctx.Err()
-	default:
-	}
-
-	rto := defaultRTO
-
-	// Phase 1: Binding
-	reportProgress(Progress{Phase: PhaseBinding})
-
-	txID := newTransactionID()
-	resp, latency, err := roundTrip(packetConn, serverAddr, txID, nil, rto)
-	if err != nil {
-		return nil, E.Cause(err, "binding request")
-	}
-
-	rto = max(minRTO, 3*latency)
-
-	externalAddr, ok := resp.externalAddr()
-	if !ok {
-		return nil, E.New("no mapped address in response")
-	}
-
-	result := &Result{
-		ExternalAddr: externalAddr.String(),
-		LatencyMs:    int32(latency.Milliseconds()),
-	}
-
-	reportProgress(Progress{
-		Phase:        PhaseBinding,
-		ExternalAddr: result.ExternalAddr,
-		LatencyMs:    result.LatencyMs,
-	})
-
-	otherAddr := resp.otherAddr
-	if !otherAddr.IsValid() {
-		result.NATTypeSupported = false
-		reportProgress(Progress{
-			Phase:        PhaseDone,
-			ExternalAddr: result.ExternalAddr,
-			LatencyMs:    result.LatencyMs,
-		})
-		return result, nil
-	}
-	result.NATTypeSupported = true
-
-	select {
-	case <-ctx.Done():
-		return result, nil
-	default:
-	}
-
-	// Phase 2: NAT Mapping Detection (RFC 5780 Section 4.3)
-	reportProgress(Progress{
-		Phase:        PhaseNATMapping,
-		ExternalAddr: result.ExternalAddr,
-		LatencyMs:    result.LatencyMs,
-	})
-
-	result.NATMapping = detectNATMapping(
-		packetConn, serverSocksaddr.Port, externalAddr, otherAddr, rto,
-	)
-
-	reportProgress(Progress{
-		Phase:        PhaseNATMapping,
-		ExternalAddr: result.ExternalAddr,
-		LatencyMs:    result.LatencyMs,
-		NATMapping:   result.NATMapping,
-	})
-
-	select {
-	case <-ctx.Done():
-		return result, nil
-	default:
-	}
-
-	// Phase 3: NAT Filtering Detection (RFC 5780 Section 4.4)
-	reportProgress(Progress{
-		Phase:        PhaseNATFiltering,
-		ExternalAddr: result.ExternalAddr,
-		LatencyMs:    result.LatencyMs,
-		NATMapping:   result.NATMapping,
-	})
-
-	result.NATFiltering = detectNATFiltering(packetConn, serverAddr, rto)
-
-	reportProgress(Progress{
-		Phase:        PhaseDone,
-		ExternalAddr: result.ExternalAddr,
-		LatencyMs:    result.LatencyMs,
-		NATMapping:   result.NATMapping,
-		NATFiltering: result.NATFiltering,
-	})
-
-	return result, nil
-}
-
-func detectNATMapping(
-	conn net.PacketConn,
-	serverPort uint16,
-	externalAddr netip.AddrPort,
-	otherAddr netip.AddrPort,
-	rto time.Duration,
-) NATMapping {
-	// Mapping Test II: Send to other_ip:server_port
-	testIIAddr := net.UDPAddrFromAddrPort(
-		netip.AddrPortFrom(otherAddr.Addr(), serverPort),
-	)
-	txID2 := newTransactionID()
-	resp2, _, err := roundTrip(conn, testIIAddr, txID2, nil, rto)
-	if err != nil {
-		return NATMappingUnknown
-	}
-
-	externalAddr2, ok := resp2.externalAddr()
-	if !ok {
-		return NATMappingUnknown
-	}
-
-	if externalAddr == externalAddr2 {
-		return NATMappingEndpointIndependent
-	}
-
-	// Mapping Test III: Send to other_ip:other_port
-	testIIIAddr := net.UDPAddrFromAddrPort(otherAddr)
-	txID3 := newTransactionID()
-	resp3, _, err := roundTrip(conn, testIIIAddr, txID3, nil, rto)
-	if err != nil {
-		return NATMappingUnknown
-	}
-
-	externalAddr3, ok := resp3.externalAddr()
-	if !ok {
-		return NATMappingUnknown
-	}
-
-	if externalAddr2 == externalAddr3 {
-		return NATMappingAddressDependent
-	}
-	return NATMappingAddressAndPortDependent
-}
-
-func detectNATFiltering(
-	conn net.PacketConn,
-	serverAddr net.Addr,
-	rto time.Duration,
-) NATFiltering {
-	// Filtering Test II: Request response from different IP and port
-	txID := newTransactionID()
-	_, _, err := roundTrip(conn, serverAddr, txID,
-		[]stunAttribute{changeRequestAttr(changeIP | changePort)}, rto)
-	if err == nil {
-		return NATFilteringEndpointIndependent
-	}
-
-	// Filtering Test III: Request response from different port only
-	txID = newTransactionID()
-	_, _, err = roundTrip(conn, serverAddr, txID,
-		[]stunAttribute{changeRequestAttr(changePort)}, rto)
-	if err == nil {
-		return NATFilteringAddressDependent
-	}
-
-	return NATFilteringAddressAndPortDependent
-}
-
-func paddingLen(n int) int {
-	if n%4 == 0 {
-		return 0
-	}
-	return 4 - n%4
-}

common/tls/acme.go

@@ -38,6 +38,37 @@ func (w *acmeWrapper) Close() error {
 	return nil
 }
 
+type acmeLogWriter struct {
+	logger logger.Logger
+}
+
+func (w *acmeLogWriter) Write(p []byte) (n int, err error) {
+	logLine := strings.ReplaceAll(string(p), "	", ": ")
+	switch {
+	case strings.HasPrefix(logLine, "error: "):
+		w.logger.Error(logLine[7:])
+	case strings.HasPrefix(logLine, "warn: "):
+		w.logger.Warn(logLine[6:])
+	case strings.HasPrefix(logLine, "info: "):
+		w.logger.Info(logLine[6:])
+	case strings.HasPrefix(logLine, "debug: "):
+		w.logger.Debug(logLine[7:])
+	default:
+		w.logger.Debug(logLine)
+	}
+	return len(p), nil
+}
+
+func (w *acmeLogWriter) Sync() error {
+	return nil
+}
+
+func encoderConfig() zapcore.EncoderConfig {
+	config := zap.NewProductionEncoderConfig()
+	config.TimeKey = zapcore.OmitKey
+	return config
+}
+
 func startACME(ctx context.Context, logger logger.Logger, options option.InboundACMEOptions) (*tls.Config, adapter.SimpleLifecycle, error) {
 	var acmeServer string
 	switch options.Provider {
@@ -60,8 +91,8 @@ func startACME(ctx context.Context, logger logger.Logger, options option.Inbound
 		storage = certmagic.Default.Storage
 	}
 	zapLogger := zap.New(zapcore.NewCore(
-		zapcore.NewConsoleEncoder(ACMEEncoderConfig()),
-		&ACMELogWriter{Logger: logger},
+		zapcore.NewConsoleEncoder(encoderConfig()),
+		&acmeLogWriter{logger: logger},
 		zap.DebugLevel,
 	))
 	config := &certmagic.Config{
@@ -127,7 +158,7 @@ func startACME(ctx context.Context, logger logger.Logger, options option.Inbound
 	} else {
 		tlsConfig = &tls.Config{
 			GetCertificate: config.GetCertificate,
-			NextProtos:     []string{C.ACMETLS1Protocol},
+			NextProtos:     []string{ACMETLS1Protocol},
 		}
 	}
 	return tlsConfig, &acmeWrapper{ctx: ctx, cfg: config, cache: cache, domain: options.Domain}, nil

common/tls/acme_contstant.go

@@ -1,3 +1,3 @@
-package constant
+package tls
 
 const ACMETLS1Protocol = "acme-tls/1"

common/tls/acme_logger.go

@@ -1,41 +0,0 @@
-package tls
-
-import (
-	"strings"
-
-	"github.com/sagernet/sing/common/logger"
-
-	"go.uber.org/zap"
-	"go.uber.org/zap/zapcore"
-)
-
-type ACMELogWriter struct {
-	Logger logger.Logger
-}
-
-func (w *ACMELogWriter) Write(p []byte) (n int, err error) {
-	logLine := strings.ReplaceAll(string(p), "	", ": ")
-	switch {
-	case strings.HasPrefix(logLine, "error: "):
-		w.Logger.Error(logLine[7:])
-	case strings.HasPrefix(logLine, "warn: "):
-		w.Logger.Warn(logLine[6:])
-	case strings.HasPrefix(logLine, "info: "):
-		w.Logger.Info(logLine[6:])
-	case strings.HasPrefix(logLine, "debug: "):
-		w.Logger.Debug(logLine[7:])
-	default:
-		w.Logger.Debug(logLine)
-	}
-	return len(p), nil
-}
-
-func (w *ACMELogWriter) Sync() error {
-	return nil
-}
-
-func ACMEEncoderConfig() zapcore.EncoderConfig {
-	config := zap.NewProductionEncoderConfig()
-	config.TimeKey = zapcore.OmitKey
-	return config
-}

common/tls/apple_client_platform_test.go

@@ -1,205 +0,0 @@
-//go:build darwin && cgo
-
-package tls
-
-import (
-	"context"
-	stdtls "crypto/tls"
-	"net"
-	"testing"
-	"time"
-
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common/json/badoption"
-	"github.com/sagernet/sing/common/logger"
-)
-
-const appleTLSTestTimeout = 5 * time.Second
-
-type appleTLSServerResult struct {
-	state stdtls.ConnectionState
-	err   error
-}
-
-func TestAppleClientHandshakeAppliesALPNAndVersion(t *testing.T) {
-	serverCertificate, serverCertificatePEM := newAppleTestCertificate(t, "localhost")
-	serverResult, serverAddress := startAppleTLSTestServer(t, &stdtls.Config{
-		Certificates: []stdtls.Certificate{serverCertificate},
-		MinVersion:   stdtls.VersionTLS12,
-		MaxVersion:   stdtls.VersionTLS12,
-		NextProtos:   []string{"h2"},
-	})
-
-	clientConn, err := newAppleTestClientConn(t, serverAddress, option.OutboundTLSOptions{
-		Enabled:     true,
-		Engine:      "apple",
-		ServerName:  "localhost",
-		MinVersion:  "1.2",
-		MaxVersion:  "1.2",
-		ALPN:        badoption.Listable[string]{"h2"},
-		Certificate: badoption.Listable[string]{serverCertificatePEM},
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer clientConn.Close()
-
-	clientState := clientConn.ConnectionState()
-	if clientState.Version != stdtls.VersionTLS12 {
-		t.Fatalf("unexpected negotiated version: %x", clientState.Version)
-	}
-	if clientState.NegotiatedProtocol != "h2" {
-		t.Fatalf("unexpected negotiated protocol: %q", clientState.NegotiatedProtocol)
-	}
-
-	result := <-serverResult
-	if result.err != nil {
-		t.Fatal(result.err)
-	}
-	if result.state.Version != stdtls.VersionTLS12 {
-		t.Fatalf("server negotiated unexpected version: %x", result.state.Version)
-	}
-	if result.state.NegotiatedProtocol != "h2" {
-		t.Fatalf("server negotiated unexpected protocol: %q", result.state.NegotiatedProtocol)
-	}
-}
-
-func TestAppleClientHandshakeRejectsVersionMismatch(t *testing.T) {
-	serverCertificate, serverCertificatePEM := newAppleTestCertificate(t, "localhost")
-	serverResult, serverAddress := startAppleTLSTestServer(t, &stdtls.Config{
-		Certificates: []stdtls.Certificate{serverCertificate},
-		MinVersion:   stdtls.VersionTLS13,
-		MaxVersion:   stdtls.VersionTLS13,
-	})
-
-	clientConn, err := newAppleTestClientConn(t, serverAddress, option.OutboundTLSOptions{
-		Enabled:     true,
-		Engine:      "apple",
-		ServerName:  "localhost",
-		MaxVersion:  "1.2",
-		Certificate: badoption.Listable[string]{serverCertificatePEM},
-	})
-	if err == nil {
-		clientConn.Close()
-		t.Fatal("expected version mismatch handshake to fail")
-	}
-
-	if result := <-serverResult; result.err == nil {
-		t.Fatal("expected server handshake to fail on version mismatch")
-	}
-}
-
-func TestAppleClientHandshakeRejectsServerNameMismatch(t *testing.T) {
-	serverCertificate, serverCertificatePEM := newAppleTestCertificate(t, "localhost")
-	serverResult, serverAddress := startAppleTLSTestServer(t, &stdtls.Config{
-		Certificates: []stdtls.Certificate{serverCertificate},
-	})
-
-	clientConn, err := newAppleTestClientConn(t, serverAddress, option.OutboundTLSOptions{
-		Enabled:     true,
-		Engine:      "apple",
-		ServerName:  "example.com",
-		Certificate: badoption.Listable[string]{serverCertificatePEM},
-	})
-	if err == nil {
-		clientConn.Close()
-		t.Fatal("expected server name mismatch handshake to fail")
-	}
-
-	if result := <-serverResult; result.err == nil {
-		t.Fatal("expected server handshake to fail on server name mismatch")
-	}
-}
-
-func newAppleTestCertificate(t *testing.T, serverName string) (stdtls.Certificate, string) {
-	t.Helper()
-
-	privateKeyPEM, certificatePEM, err := GenerateCertificate(nil, nil, time.Now, serverName, time.Now().Add(time.Hour))
-	if err != nil {
-		t.Fatal(err)
-	}
-	certificate, err := stdtls.X509KeyPair(certificatePEM, privateKeyPEM)
-	if err != nil {
-		t.Fatal(err)
-	}
-	return certificate, string(certificatePEM)
-}
-
-func startAppleTLSTestServer(t *testing.T, tlsConfig *stdtls.Config) (<-chan appleTLSServerResult, string) {
-	t.Helper()
-
-	listener, err := net.Listen("tcp", "127.0.0.1:0")
-	if err != nil {
-		t.Fatal(err)
-	}
-	t.Cleanup(func() {
-		listener.Close()
-	})
-
-	if tcpListener, isTCP := listener.(*net.TCPListener); isTCP {
-		err = tcpListener.SetDeadline(time.Now().Add(appleTLSTestTimeout))
-		if err != nil {
-			t.Fatal(err)
-		}
-	}
-
-	result := make(chan appleTLSServerResult, 1)
-	go func() {
-		defer close(result)
-
-		conn, err := listener.Accept()
-		if err != nil {
-			result <- appleTLSServerResult{err: err}
-			return
-		}
-		defer conn.Close()
-
-		err = conn.SetDeadline(time.Now().Add(appleTLSTestTimeout))
-		if err != nil {
-			result <- appleTLSServerResult{err: err}
-			return
-		}
-
-		tlsConn := stdtls.Server(conn, tlsConfig)
-		defer tlsConn.Close()
-
-		err = tlsConn.Handshake()
-		if err != nil {
-			result <- appleTLSServerResult{err: err}
-			return
-		}
-
-		result <- appleTLSServerResult{state: tlsConn.ConnectionState()}
-	}()
-
-	return result, listener.Addr().String()
-}
-
-func newAppleTestClientConn(t *testing.T, serverAddress string, options option.OutboundTLSOptions) (Conn, error) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), appleTLSTestTimeout)
-	t.Cleanup(cancel)
-
-	clientConfig, err := NewClientWithOptions(ClientOptions{
-		Context:       ctx,
-		Logger:        logger.NOP(),
-		ServerAddress: "",
-		Options:       options,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	conn, err := net.DialTimeout("tcp", serverAddress, appleTLSTestTimeout)
-	if err != nil {
-		return nil, err
-	}
-
-	tlsConn, err := ClientHandshake(ctx, conn, clientConfig)
-	if err != nil {
-		conn.Close()
-		return nil, err
-	}
-	return tlsConn, nil
-}

common/tls/apple_client_stub.go

@@ -1,15 +0,0 @@
-//go:build !darwin || !cgo
-
-package tls
-
-import (
-	"context"
-
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-)
-
-func newAppleClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions, allowEmptyServerName bool) (Config, error) {
-	return nil, E.New("Apple TLS engine is not available on non-Apple platforms")
-}

common/tls/client.go

@@ -8,16 +8,14 @@ import (
 	"os"
 
 	"github.com/sagernet/sing-box/common/badtls"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	aTLS "github.com/sagernet/sing/common/tls"
 )
 
-var errMissingServerName = E.New("missing server_name or insecure=true")
-
 func NewDialerFromOptions(ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, serverAddress string, options option.OutboundTLSOptions) (N.Dialer, error) {
 	if !options.Enabled {
 		return dialer, nil
@@ -44,12 +42,11 @@ func NewClient(ctx context.Context, logger logger.ContextLogger, serverAddress s
 }
 
 type ClientOptions struct {
-	Context              context.Context
-	Logger               logger.ContextLogger
-	ServerAddress        string
-	Options              option.OutboundTLSOptions
-	AllowEmptyServerName bool
-	KTLSCompatible       bool
+	Context        context.Context
+	Logger         logger.ContextLogger
+	ServerAddress  string
+	Options        option.OutboundTLSOptions
+	KTLSCompatible bool
 }
 
 func NewClientWithOptions(options ClientOptions) (Config, error) {
@@ -64,22 +61,17 @@ func NewClientWithOptions(options ClientOptions) (Config, error) {
 	if options.Options.KernelRx {
 		options.Logger.Warn("enabling kTLS RX will definitely reduce performance, please checkout https://sing-box.sagernet.org/configuration/shared/tls/#kernel_rx")
 	}
-	switch options.Options.Engine {
-	case "", "go":
-	case "apple":
-		return newAppleClient(options.Context, options.Logger, options.ServerAddress, options.Options, options.AllowEmptyServerName)
-	default:
-		return nil, E.New("unknown tls engine: ", options.Options.Engine)
-	}
 	if options.Options.Reality != nil && options.Options.Reality.Enabled {
-		return newRealityClient(options.Context, options.Logger, options.ServerAddress, options.Options, options.AllowEmptyServerName)
+		return NewRealityClient(options.Context, options.Logger, options.ServerAddress, options.Options)
 	} else if options.Options.UTLS != nil && options.Options.UTLS.Enabled {
-		return newUTLSClient(options.Context, options.Logger, options.ServerAddress, options.Options, options.AllowEmptyServerName)
+		return NewUTLSClient(options.Context, options.Logger, options.ServerAddress, options.Options)
 	}
-	return newSTDClient(options.Context, options.Logger, options.ServerAddress, options.Options, options.AllowEmptyServerName)
+	return NewSTDClient(options.Context, options.Logger, options.ServerAddress, options.Options)
 }
 
 func ClientHandshake(ctx context.Context, conn net.Conn, config Config) (Conn, error) {
+	ctx, cancel := context.WithTimeout(ctx, C.TCPTimeout)
+	defer cancel()
 	tlsConn, err := aTLS.ClientHandshake(ctx, conn, config)
 	if err != nil {
 		return nil, err

common/tls/reality_client.go

@@ -52,15 +52,11 @@ type RealityClientConfig struct {
 }
 
 func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return newRealityClient(ctx, logger, serverAddress, options, false)
-}
-
-func newRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions, allowEmptyServerName bool) (Config, error) {
 	if options.UTLS == nil || !options.UTLS.Enabled {
 		return nil, E.New("uTLS is required by reality client")
 	}
 
-	uClient, err := newUTLSClient(ctx, logger, serverAddress, options, allowEmptyServerName)
+	uClient, err := NewUTLSClient(ctx, logger, serverAddress, options)
 	if err != nil {
 		return nil, err
 	}
@@ -112,14 +108,6 @@ func (e *RealityClientConfig) SetNextProtos(nextProto []string) {
 	e.uClient.SetNextProtos(nextProto)
 }
 
-func (e *RealityClientConfig) HandshakeTimeout() time.Duration {
-	return e.uClient.HandshakeTimeout()
-}
-
-func (e *RealityClientConfig) SetHandshakeTimeout(timeout time.Duration) {
-	e.uClient.SetHandshakeTimeout(timeout)
-}
-
 func (e *RealityClientConfig) STDConfig() (*STDConfig, error) {
 	return nil, E.New("unsupported usage for reality")
 }

common/tls/reality_server.go

@@ -26,17 +26,12 @@ import (
 var _ ServerConfigCompat = (*RealityServerConfig)(nil)
 
 type RealityServerConfig struct {
-	config           *utls.RealityConfig
-	handshakeTimeout time.Duration
+	config *utls.RealityConfig
 }
 
 func NewRealityServer(ctx context.Context, logger log.ContextLogger, options option.InboundTLSOptions) (ServerConfig, error) {
 	var tlsConfig utls.RealityConfig
 
-	if options.CertificateProvider != nil {
-		return nil, E.New("certificate_provider is unavailable in reality")
-	}
-	//nolint:staticcheck
 	if options.ACME != nil && len(options.ACME.Domain) > 0 {
 		return nil, E.New("acme is unavailable in reality")
 	}
@@ -131,16 +126,7 @@ func NewRealityServer(ctx context.Context, logger log.ContextLogger, options opt
 	if options.ECH != nil && options.ECH.Enabled {
 		return nil, E.New("Reality is conflict with ECH")
 	}
-	var handshakeTimeout time.Duration
-	if options.HandshakeTimeout > 0 {
-		handshakeTimeout = options.HandshakeTimeout.Build()
-	} else {
-		handshakeTimeout = C.TCPTimeout
-	}
-	var config ServerConfig = &RealityServerConfig{
-		config:           &tlsConfig,
-		handshakeTimeout: handshakeTimeout,
-	}
+	var config ServerConfig = &RealityServerConfig{&tlsConfig}
 	if options.KernelTx || options.KernelRx {
 		if !C.IsLinux {
 			return nil, E.New("kTLS is only supported on Linux")
@@ -171,14 +157,6 @@ func (c *RealityServerConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
-func (c *RealityServerConfig) HandshakeTimeout() time.Duration {
-	return c.handshakeTimeout
-}
-
-func (c *RealityServerConfig) SetHandshakeTimeout(timeout time.Duration) {
-	c.handshakeTimeout = timeout
-}
-
 func (c *RealityServerConfig) STDConfig() (*tls.Config, error) {
 	return nil, E.New("unsupported usage for reality")
 }
@@ -209,8 +187,7 @@ func (c *RealityServerConfig) ServerHandshake(ctx context.Context, conn net.Conn
 
 func (c *RealityServerConfig) Clone() Config {
 	return &RealityServerConfig{
-		config:           c.config.Clone(),
-		handshakeTimeout: c.handshakeTimeout,
+		config: c.config.Clone(),
 	}
 }
 

common/tls/server.go

@@ -46,11 +46,8 @@ func NewServerWithOptions(options ServerOptions) (ServerConfig, error) {
 }
 
 func ServerHandshake(ctx context.Context, conn net.Conn, config ServerConfig) (Conn, error) {
-	if config.HandshakeTimeout() == 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, C.TCPTimeout)
-		defer cancel()
-	}
+	ctx, cancel := context.WithTimeout(ctx, C.TCPTimeout)
+	defer cancel()
 	tlsConn, err := aTLS.ServerHandshake(ctx, conn, config)
 	if err != nil {
 		return nil, err

common/tls/std_client.go

@@ -24,30 +24,16 @@ import (
 type STDClientConfig struct {
 	ctx                   context.Context
 	config                *tls.Config
-	serverName            string
-	disableSNI            bool
-	verifyServerName      bool
-	handshakeTimeout      time.Duration
 	fragment              bool
 	fragmentFallbackDelay time.Duration
 	recordFragment        bool
 }
 
 func (c *STDClientConfig) ServerName() string {
-	return c.serverName
+	return c.config.ServerName
 }
 
 func (c *STDClientConfig) SetServerName(serverName string) {
-	c.serverName = serverName
-	if c.disableSNI {
-		c.config.ServerName = ""
-		if c.verifyServerName {
-			c.config.VerifyConnection = verifyConnection(c.config.RootCAs, c.config.Time, serverName)
-		} else {
-			c.config.VerifyConnection = nil
-		}
-		return
-	}
 	c.config.ServerName = serverName
 }
 
@@ -59,14 +45,6 @@ func (c *STDClientConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
-func (c *STDClientConfig) HandshakeTimeout() time.Duration {
-	return c.handshakeTimeout
-}
-
-func (c *STDClientConfig) SetHandshakeTimeout(timeout time.Duration) {
-	c.handshakeTimeout = timeout
-}
-
 func (c *STDClientConfig) STDConfig() (*STDConfig, error) {
 	return c.config, nil
 }
@@ -79,19 +57,13 @@ func (c *STDClientConfig) Client(conn net.Conn) (Conn, error) {
 }
 
 func (c *STDClientConfig) Clone() Config {
-	cloned := &STDClientConfig{
+	return &STDClientConfig{
 		ctx:                   c.ctx,
 		config:                c.config.Clone(),
-		serverName:            c.serverName,
-		disableSNI:            c.disableSNI,
-		verifyServerName:      c.verifyServerName,
-		handshakeTimeout:      c.handshakeTimeout,
 		fragment:              c.fragment,
 		fragmentFallbackDelay: c.fragmentFallbackDelay,
 		recordFragment:        c.recordFragment,
 	}
-	cloned.SetServerName(cloned.serverName)
-	return cloned
 }
 
 func (c *STDClientConfig) ECHConfigList() []byte {
@@ -103,27 +75,41 @@ func (c *STDClientConfig) SetECHConfigList(EncryptedClientHelloConfigList []byte
 }
 
 func NewSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return newSTDClient(ctx, logger, serverAddress, options, false)
-}
-
-func newSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions, allowEmptyServerName bool) (Config, error) {
 	var serverName string
 	if options.ServerName != "" {
 		serverName = options.ServerName
 	} else if serverAddress != "" {
 		serverName = serverAddress
 	}
-	if serverName == "" && !options.Insecure && !allowEmptyServerName {
-		return nil, errMissingServerName
+	if serverName == "" && !options.Insecure {
+		return nil, E.New("missing server_name or insecure=true")
 	}
 
 	var tlsConfig tls.Config
 	tlsConfig.Time = ntp.TimeFuncFromContext(ctx)
 	tlsConfig.RootCAs = adapter.RootPoolFromContext(ctx)
+	if !options.DisableSNI {
+		tlsConfig.ServerName = serverName
+	}
 	if options.Insecure {
 		tlsConfig.InsecureSkipVerify = options.Insecure
 	} else if options.DisableSNI {
 		tlsConfig.InsecureSkipVerify = true
+		tlsConfig.VerifyConnection = func(state tls.ConnectionState) error {
+			verifyOptions := x509.VerifyOptions{
+				Roots:         tlsConfig.RootCAs,
+				DNSName:       serverName,
+				Intermediates: x509.NewCertPool(),
+			}
+			for _, cert := range state.PeerCertificates[1:] {
+				verifyOptions.Intermediates.AddCert(cert)
+			}
+			if tlsConfig.Time != nil {
+				verifyOptions.CurrentTime = tlsConfig.Time()
+			}
+			_, err := state.PeerCertificates[0].Verify(verifyOptions)
+			return err
+		}
 	}
 	if len(options.CertificatePublicKeySHA256) > 0 {
 		if len(options.Certificate) > 0 || options.CertificatePath != "" {
@@ -212,24 +198,7 @@ func newSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddres
 	} else if len(clientCertificate) > 0 || len(clientKey) > 0 {
 		return nil, E.New("client certificate and client key must be provided together")
 	}
-	var handshakeTimeout time.Duration
-	if options.HandshakeTimeout > 0 {
-		handshakeTimeout = options.HandshakeTimeout.Build()
-	} else {
-		handshakeTimeout = C.TCPTimeout
-	}
-	var config Config = &STDClientConfig{
-		ctx:                   ctx,
-		config:                &tlsConfig,
-		serverName:            serverName,
-		disableSNI:            options.DisableSNI,
-		verifyServerName:      options.DisableSNI && !options.Insecure,
-		handshakeTimeout:      handshakeTimeout,
-		fragment:              options.Fragment,
-		fragmentFallbackDelay: time.Duration(options.FragmentFallbackDelay),
-		recordFragment:        options.RecordFragment,
-	}
-	config.SetServerName(serverName)
+	var config Config = &STDClientConfig{ctx, &tlsConfig, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
 	if options.ECH != nil && options.ECH.Enabled {
 		var err error
 		config, err = parseECHClientConfig(ctx, config.(ECHCapableConfig), options)
@@ -251,27 +220,6 @@ func newSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddres
 	return config, nil
 }
 
-func verifyConnection(rootCAs *x509.CertPool, timeFunc func() time.Time, serverName string) func(state tls.ConnectionState) error {
-	return func(state tls.ConnectionState) error {
-		if serverName == "" {
-			return errMissingServerName
-		}
-		verifyOptions := x509.VerifyOptions{
-			Roots:         rootCAs,
-			DNSName:       serverName,
-			Intermediates: x509.NewCertPool(),
-		}
-		for _, cert := range state.PeerCertificates[1:] {
-			verifyOptions.Intermediates.AddCert(cert)
-		}
-		if timeFunc != nil {
-			verifyOptions.CurrentTime = timeFunc()
-		}
-		_, err := state.PeerCertificates[0].Verify(verifyOptions)
-		return err
-	}
-}
-
 func verifyPublicKeySHA256(knownHashValues [][]byte, rawCerts [][]byte, timeFunc func() time.Time) error {
 	leafCertificate, err := x509.ParseCertificate(rawCerts[0])
 	if err != nil {

common/tls/std_server.go

@@ -13,88 +13,19 @@ import (
 	"github.com/sagernet/fswatch"
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/experimental/deprecated"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/ntp"
-	"github.com/sagernet/sing/service"
 )
 
 var errInsecureUnused = E.New("tls: insecure unused")
 
-type managedCertificateProvider interface {
-	adapter.CertificateProvider
-	adapter.SimpleLifecycle
-}
-
-type sharedCertificateProvider struct {
-	tag      string
-	manager  adapter.CertificateProviderManager
-	provider adapter.CertificateProviderService
-}
-
-func (p *sharedCertificateProvider) Start() error {
-	provider, found := p.manager.Get(p.tag)
-	if !found {
-		return E.New("certificate provider not found: ", p.tag)
-	}
-	p.provider = provider
-	return nil
-}
-
-func (p *sharedCertificateProvider) Close() error {
-	return nil
-}
-
-func (p *sharedCertificateProvider) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
-	return p.provider.GetCertificate(hello)
-}
-
-func (p *sharedCertificateProvider) GetACMENextProtos() []string {
-	return getACMENextProtos(p.provider)
-}
-
-type inlineCertificateProvider struct {
-	provider adapter.CertificateProviderService
-}
-
-func (p *inlineCertificateProvider) Start() error {
-	for _, stage := range adapter.ListStartStages {
-		err := adapter.LegacyStart(p.provider, stage)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (p *inlineCertificateProvider) Close() error {
-	return p.provider.Close()
-}
-
-func (p *inlineCertificateProvider) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
-	return p.provider.GetCertificate(hello)
-}
-
-func (p *inlineCertificateProvider) GetACMENextProtos() []string {
-	return getACMENextProtos(p.provider)
-}
-
-func getACMENextProtos(provider adapter.CertificateProvider) []string {
-	if acmeProvider, isACME := provider.(adapter.ACMECertificateProvider); isACME {
-		return acmeProvider.GetACMENextProtos()
-	}
-	return nil
-}
-
 type STDServerConfig struct {
 	access                sync.RWMutex
 	config                *tls.Config
-	handshakeTimeout      time.Duration
 	logger                log.Logger
-	certificateProvider   managedCertificateProvider
 	acmeService           adapter.SimpleLifecycle
 	certificate           []byte
 	key                   []byte
@@ -122,17 +53,18 @@ func (c *STDServerConfig) SetServerName(serverName string) {
 func (c *STDServerConfig) NextProtos() []string {
 	c.access.RLock()
 	defer c.access.RUnlock()
-	if c.hasACMEALPN() && len(c.config.NextProtos) > 1 && c.config.NextProtos[0] == C.ACMETLS1Protocol {
+	if c.acmeService != nil && len(c.config.NextProtos) > 1 && c.config.NextProtos[0] == ACMETLS1Protocol {
 		return c.config.NextProtos[1:]
+	} else {
+		return c.config.NextProtos
 	}
-	return c.config.NextProtos
 }
 
 func (c *STDServerConfig) SetNextProtos(nextProto []string) {
 	c.access.Lock()
 	defer c.access.Unlock()
 	config := c.config.Clone()
-	if c.hasACMEALPN() && len(c.config.NextProtos) > 1 && c.config.NextProtos[0] == C.ACMETLS1Protocol {
+	if c.acmeService != nil && len(c.config.NextProtos) > 1 && c.config.NextProtos[0] == ACMETLS1Protocol {
 		config.NextProtos = append(c.config.NextProtos[:1], nextProto...)
 	} else {
 		config.NextProtos = nextProto
@@ -140,30 +72,6 @@ func (c *STDServerConfig) SetNextProtos(nextProto []string) {
 	c.config = config
 }
 
-func (c *STDServerConfig) HandshakeTimeout() time.Duration {
-	c.access.RLock()
-	defer c.access.RUnlock()
-	return c.handshakeTimeout
-}
-
-func (c *STDServerConfig) SetHandshakeTimeout(timeout time.Duration) {
-	c.access.Lock()
-	defer c.access.Unlock()
-	c.handshakeTimeout = timeout
-}
-
-func (c *STDServerConfig) hasACMEALPN() bool {
-	if c.acmeService != nil {
-		return true
-	}
-	if c.certificateProvider != nil {
-		if acmeProvider, isACME := c.certificateProvider.(adapter.ACMECertificateProvider); isACME {
-			return len(acmeProvider.GetACMENextProtos()) > 0
-		}
-	}
-	return false
-}
-
 func (c *STDServerConfig) STDConfig() (*STDConfig, error) {
 	return c.config, nil
 }
@@ -178,45 +86,20 @@ func (c *STDServerConfig) Server(conn net.Conn) (Conn, error) {
 
 func (c *STDServerConfig) Clone() Config {
 	return &STDServerConfig{
-		config:           c.config.Clone(),
-		handshakeTimeout: c.handshakeTimeout,
+		config: c.config.Clone(),
 	}
 }
 
 func (c *STDServerConfig) Start() error {
-	if c.certificateProvider != nil {
-		err := c.certificateProvider.Start()
-		if err != nil {
-			return err
-		}
-		if acmeProvider, isACME := c.certificateProvider.(adapter.ACMECertificateProvider); isACME {
-			nextProtos := acmeProvider.GetACMENextProtos()
-			if len(nextProtos) > 0 {
-				c.access.Lock()
-				config := c.config.Clone()
-				mergedNextProtos := append([]string{}, nextProtos...)
-				for _, nextProto := range config.NextProtos {
-					if !common.Contains(mergedNextProtos, nextProto) {
-						mergedNextProtos = append(mergedNextProtos, nextProto)
-					}
-				}
-				config.NextProtos = mergedNextProtos
-				c.config = config
-				c.access.Unlock()
-			}
-		}
-	}
 	if c.acmeService != nil {
-		err := c.acmeService.Start()
+		return c.acmeService.Start()
+	} else {
+		err := c.startWatcher()
 		if err != nil {
-			return err
+			c.logger.Warn("create fsnotify watcher: ", err)
 		}
+		return nil
 	}
-	err := c.startWatcher()
-	if err != nil {
-		c.logger.Warn("create fsnotify watcher: ", err)
-	}
-	return nil
 }
 
 func (c *STDServerConfig) startWatcher() error {
@@ -320,34 +203,23 @@ func (c *STDServerConfig) certificateUpdated(path string) error {
 }
 
 func (c *STDServerConfig) Close() error {
-	return common.Close(c.certificateProvider, c.acmeService, c.watcher)
+	if c.acmeService != nil {
+		return c.acmeService.Close()
+	}
+	if c.watcher != nil {
+		return c.watcher.Close()
+	}
+	return nil
 }
 
 func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.InboundTLSOptions) (ServerConfig, error) {
 	if !options.Enabled {
 		return nil, nil
 	}
-	//nolint:staticcheck
-	if options.CertificateProvider != nil && options.ACME != nil {
-		return nil, E.New("certificate_provider and acme are mutually exclusive")
-	}
 	var tlsConfig *tls.Config
-	var certificateProvider managedCertificateProvider
 	var acmeService adapter.SimpleLifecycle
 	var err error
-	if options.CertificateProvider != nil {
-		certificateProvider, err = newCertificateProvider(ctx, logger, options.CertificateProvider)
-		if err != nil {
-			return nil, err
-		}
-		tlsConfig = &tls.Config{
-			GetCertificate: certificateProvider.GetCertificate,
-		}
-		if options.Insecure {
-			return nil, errInsecureUnused
-		}
-	} else if options.ACME != nil && len(options.ACME.Domain) > 0 { //nolint:staticcheck
-		deprecated.Report(ctx, deprecated.OptionInlineACME)
+	if options.ACME != nil && len(options.ACME.Domain) > 0 {
 		//nolint:staticcheck
 		tlsConfig, acmeService, err = startACME(ctx, logger, common.PtrValueOrDefault(options.ACME))
 		if err != nil {
@@ -400,7 +272,7 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 		certificate []byte
 		key         []byte
 	)
-	if certificateProvider == nil && acmeService == nil {
+	if acmeService == nil {
 		if len(options.Certificate) > 0 {
 			certificate = []byte(strings.Join(options.Certificate, "\n"))
 		} else if options.CertificatePath != "" {
@@ -485,17 +357,9 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 			return nil, err
 		}
 	}
-	var handshakeTimeout time.Duration
-	if options.HandshakeTimeout > 0 {
-		handshakeTimeout = options.HandshakeTimeout.Build()
-	} else {
-		handshakeTimeout = C.TCPTimeout
-	}
 	serverConfig := &STDServerConfig{
 		config:                tlsConfig,
-		handshakeTimeout:      handshakeTimeout,
 		logger:                logger,
-		certificateProvider:   certificateProvider,
 		acmeService:           acmeService,
 		certificate:           certificate,
 		key:                   key,
@@ -505,8 +369,8 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 		echKeyPath:            echKeyPath,
 	}
 	serverConfig.config.GetConfigForClient = func(info *tls.ClientHelloInfo) (*tls.Config, error) {
-		serverConfig.access.RLock()
-		defer serverConfig.access.RUnlock()
+		serverConfig.access.Lock()
+		defer serverConfig.access.Unlock()
 		return serverConfig.config, nil
 	}
 	var config ServerConfig = serverConfig
@@ -523,27 +387,3 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 	}
 	return config, nil
 }
-
-func newCertificateProvider(ctx context.Context, logger log.ContextLogger, options *option.CertificateProviderOptions) (managedCertificateProvider, error) {
-	if options.IsShared() {
-		manager := service.FromContext[adapter.CertificateProviderManager](ctx)
-		if manager == nil {
-			return nil, E.New("missing certificate provider manager in context")
-		}
-		return &sharedCertificateProvider{
-			tag:     options.Tag,
-			manager: manager,
-		}, nil
-	}
-	registry := service.FromContext[adapter.CertificateProviderRegistry](ctx)
-	if registry == nil {
-		return nil, E.New("missing certificate provider registry in context")
-	}
-	provider, err := registry.Create(ctx, logger, "", options.Type, options.Options)
-	if err != nil {
-		return nil, E.Cause(err, "create inline certificate provider")
-	}
-	return &inlineCertificateProvider{
-		provider: provider,
-	}, nil
-}

common/tls/utls_client.go

@@ -28,10 +28,6 @@ import (
 type UTLSClientConfig struct {
 	ctx                   context.Context
 	config                *utls.Config
-	serverName            string
-	disableSNI            bool
-	verifyServerName      bool
-	handshakeTimeout      time.Duration
 	id                    utls.ClientHelloID
 	fragment              bool
 	fragmentFallbackDelay time.Duration
@@ -39,20 +35,10 @@ type UTLSClientConfig struct {
 }
 
 func (c *UTLSClientConfig) ServerName() string {
-	return c.serverName
+	return c.config.ServerName
 }
 
 func (c *UTLSClientConfig) SetServerName(serverName string) {
-	c.serverName = serverName
-	if c.disableSNI {
-		c.config.ServerName = ""
-		if c.verifyServerName {
-			c.config.InsecureServerNameToVerify = serverName
-		} else {
-			c.config.InsecureServerNameToVerify = ""
-		}
-		return
-	}
 	c.config.ServerName = serverName
 }
 
@@ -67,14 +53,6 @@ func (c *UTLSClientConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
-func (c *UTLSClientConfig) HandshakeTimeout() time.Duration {
-	return c.handshakeTimeout
-}
-
-func (c *UTLSClientConfig) SetHandshakeTimeout(timeout time.Duration) {
-	c.handshakeTimeout = timeout
-}
-
 func (c *UTLSClientConfig) STDConfig() (*STDConfig, error) {
 	return nil, E.New("unsupported usage for uTLS")
 }
@@ -91,20 +69,9 @@ func (c *UTLSClientConfig) SetSessionIDGenerator(generator func(clientHello []by
 }
 
 func (c *UTLSClientConfig) Clone() Config {
-	cloned := &UTLSClientConfig{
-		ctx:                   c.ctx,
-		config:                c.config.Clone(),
-		serverName:            c.serverName,
-		disableSNI:            c.disableSNI,
-		verifyServerName:      c.verifyServerName,
-		handshakeTimeout:      c.handshakeTimeout,
-		id:                    c.id,
-		fragment:              c.fragment,
-		fragmentFallbackDelay: c.fragmentFallbackDelay,
-		recordFragment:        c.recordFragment,
+	return &UTLSClientConfig{
+		c.ctx, c.config.Clone(), c.id, c.fragment, c.fragmentFallbackDelay, c.recordFragment,
 	}
-	cloned.SetServerName(cloned.serverName)
-	return cloned
 }
 
 func (c *UTLSClientConfig) ECHConfigList() []byte {
@@ -176,29 +143,29 @@ func (c *utlsALPNWrapper) HandshakeContext(ctx context.Context) error {
 }
 
 func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return newUTLSClient(ctx, logger, serverAddress, options, false)
-}
-
-func newUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions, allowEmptyServerName bool) (Config, error) {
 	var serverName string
 	if options.ServerName != "" {
 		serverName = options.ServerName
 	} else if serverAddress != "" {
 		serverName = serverAddress
 	}
-	if serverName == "" && !options.Insecure && !allowEmptyServerName {
-		return nil, errMissingServerName
+	if serverName == "" && !options.Insecure {
+		return nil, E.New("missing server_name or insecure=true")
 	}
 
 	var tlsConfig utls.Config
 	tlsConfig.Time = ntp.TimeFuncFromContext(ctx)
 	tlsConfig.RootCAs = adapter.RootPoolFromContext(ctx)
+	if !options.DisableSNI {
+		tlsConfig.ServerName = serverName
+	}
 	if options.Insecure {
 		tlsConfig.InsecureSkipVerify = options.Insecure
 	} else if options.DisableSNI {
 		if options.Reality != nil && options.Reality.Enabled {
 			return nil, E.New("disable_sni is unsupported in reality")
 		}
+		tlsConfig.InsecureServerNameToVerify = serverName
 	}
 	if len(options.CertificatePublicKeySHA256) > 0 {
 		if len(options.Certificate) > 0 || options.CertificatePath != "" {
@@ -284,29 +251,11 @@ func newUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddre
 	} else if len(clientCertificate) > 0 || len(clientKey) > 0 {
 		return nil, E.New("client certificate and client key must be provided together")
 	}
-	var handshakeTimeout time.Duration
-	if options.HandshakeTimeout > 0 {
-		handshakeTimeout = options.HandshakeTimeout.Build()
-	} else {
-		handshakeTimeout = C.TCPTimeout
-	}
 	id, err := uTLSClientHelloID(options.UTLS.Fingerprint)
 	if err != nil {
 		return nil, err
 	}
-	var config Config = &UTLSClientConfig{
-		ctx:                   ctx,
-		config:                &tlsConfig,
-		serverName:            serverName,
-		disableSNI:            options.DisableSNI,
-		verifyServerName:      options.DisableSNI && !options.Insecure,
-		handshakeTimeout:      handshakeTimeout,
-		id:                    id,
-		fragment:              options.Fragment,
-		fragmentFallbackDelay: time.Duration(options.FragmentFallbackDelay),
-		recordFragment:        options.RecordFragment,
-	}
-	config.SetServerName(serverName)
+	var config Config = &UTLSClientConfig{ctx, &tlsConfig, id, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
 	if options.ECH != nil && options.ECH.Enabled {
 		if options.Reality != nil && options.Reality.Enabled {
 			return nil, E.New("Reality is conflict with ECH")

common/tls/utls_stub.go

@@ -12,18 +12,10 @@ import (
 )
 
 func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return newUTLSClient(ctx, logger, serverAddress, options, false)
-}
-
-func newUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions, allowEmptyServerName bool) (Config, error) {
 	return nil, E.New(`uTLS is not included in this build, rebuild with -tags with_utls`)
 }
 
 func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return newRealityClient(ctx, logger, serverAddress, options, false)
-}
-
-func newRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions, allowEmptyServerName bool) (Config, error) {
 	return nil, E.New(`uTLS, which is required by reality is not included in this build, rebuild with -tags with_utls`)
 }
 

constant/dns.go

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

constant/proxy.go

@@ -1,39 +1,36 @@
 package constant
 
 const (
-	TypeTun                = "tun"
-	TypeRedirect           = "redirect"
-	TypeTProxy             = "tproxy"
-	TypeDirect             = "direct"
-	TypeBlock              = "block"
-	TypeDNS                = "dns"
-	TypeSOCKS              = "socks"
-	TypeHTTP               = "http"
-	TypeMixed              = "mixed"
-	TypeShadowsocks        = "shadowsocks"
-	TypeVMess              = "vmess"
-	TypeTrojan             = "trojan"
-	TypeNaive              = "naive"
-	TypeWireGuard          = "wireguard"
-	TypeHysteria           = "hysteria"
-	TypeTor                = "tor"
-	TypeSSH                = "ssh"
-	TypeShadowTLS          = "shadowtls"
-	TypeAnyTLS             = "anytls"
-	TypeShadowsocksR       = "shadowsocksr"
-	TypeVLESS              = "vless"
-	TypeTUIC               = "tuic"
-	TypeHysteria2          = "hysteria2"
-	TypeTailscale          = "tailscale"
-	TypeCloudflared        = "cloudflared"
-	TypeDERP               = "derp"
-	TypeResolved           = "resolved"
-	TypeSSMAPI             = "ssm-api"
-	TypeCCM                = "ccm"
-	TypeOCM                = "ocm"
-	TypeOOMKiller          = "oom-killer"
-	TypeACME               = "acme"
-	TypeCloudflareOriginCA = "cloudflare-origin-ca"
+	TypeTun          = "tun"
+	TypeRedirect     = "redirect"
+	TypeTProxy       = "tproxy"
+	TypeDirect       = "direct"
+	TypeBlock        = "block"
+	TypeDNS          = "dns"
+	TypeSOCKS        = "socks"
+	TypeHTTP         = "http"
+	TypeMixed        = "mixed"
+	TypeShadowsocks  = "shadowsocks"
+	TypeVMess        = "vmess"
+	TypeTrojan       = "trojan"
+	TypeNaive        = "naive"
+	TypeWireGuard    = "wireguard"
+	TypeHysteria     = "hysteria"
+	TypeTor          = "tor"
+	TypeSSH          = "ssh"
+	TypeShadowTLS    = "shadowtls"
+	TypeAnyTLS       = "anytls"
+	TypeShadowsocksR = "shadowsocksr"
+	TypeVLESS        = "vless"
+	TypeTUIC         = "tuic"
+	TypeHysteria2    = "hysteria2"
+	TypeTailscale    = "tailscale"
+	TypeDERP         = "derp"
+	TypeResolved     = "resolved"
+	TypeSSMAPI       = "ssm-api"
+	TypeCCM          = "ccm"
+	TypeOCM          = "ocm"
+	TypeOOMKiller    = "oom-killer"
 )
 
 const (
@@ -91,8 +88,6 @@ func ProxyDisplayName(proxyType string) string {
 		return "AnyTLS"
 	case TypeTailscale:
 		return "Tailscale"
-	case TypeCloudflared:
-		return "Cloudflared"
 	case TypeSelector:
 		return "Selector"
 	case TypeURLTest:

constant/rule.go

@@ -23,15 +23,12 @@ const (
 	RuleSetVersion2
 	RuleSetVersion3
 	RuleSetVersion4
-	RuleSetVersion5
-	RuleSetVersionCurrent = RuleSetVersion5
+	RuleSetVersionCurrent = RuleSetVersion4
 )
 
 const (
 	RuleActionTypeRoute        = "route"
 	RuleActionTypeRouteOptions = "route-options"
-	RuleActionTypeEvaluate     = "evaluate"
-	RuleActionTypeRespond      = "respond"
 	RuleActionTypeDirect       = "direct"
 	RuleActionTypeBypass       = "bypass"
 	RuleActionTypeReject       = "reject"

daemon/instance.go

@@ -87,17 +87,12 @@ func (s *StartedService) newInstance(profileContent string, overrideOptions *Ove
 			}
 		}
 	}
-	if s.oomKillerEnabled {
+	if s.oomKiller && C.IsIos {
 		if !common.Any(options.Services, func(it option.Service) bool {
 			return it.Type == C.TypeOOMKiller
 		}) {
-			oomOptions := &option.OOMKillerServiceOptions{
-				KillerDisabled:      s.oomKillerDisabled,
-				MemoryLimitOverride: s.oomMemoryLimit,
-			}
 			options.Services = append(options.Services, option.Service{
-				Type:    C.TypeOOMKiller,
-				Options: oomOptions,
+				Type: C.TypeOOMKiller,
 			})
 		}
 	}

daemon/platform.go

@@ -5,6 +5,5 @@ type PlatformHandler interface {
 	ServiceReload() error
 	SystemProxyStatus() (*SystemProxyStatus, error)
 	SetSystemProxyEnabled(enabled bool) error
-	TriggerNativeCrash() error
 	WriteDebugMessage(message string)
 }

daemon/started_service.go

@@ -6,20 +6,14 @@ import (
 	"runtime"
 	"sync"
 	"time"
-	"unsafe"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/dialer"
-	"github.com/sagernet/sing-box/common/networkquality"
-	"github.com/sagernet/sing-box/common/stun"
 	"github.com/sagernet/sing-box/common/urltest"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/experimental/clashapi"
 	"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
 	"github.com/sagernet/sing-box/experimental/deprecated"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/protocol/group"
-	"github.com/sagernet/sing-box/service/oomkiller"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/batch"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -30,8 +24,6 @@ import (
 
 	"github.com/gofrs/uuid/v5"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/types/known/emptypb"
 )
 
@@ -40,12 +32,10 @@ var _ StartedServiceServer = (*StartedService)(nil)
 type StartedService struct {
 	ctx context.Context
 	// platform adapter.PlatformInterface
-	handler           PlatformHandler
-	debug             bool
-	logMaxLines       int
-	oomKillerEnabled  bool
-	oomKillerDisabled bool
-	oomMemoryLimit    uint64
+	handler     PlatformHandler
+	debug       bool
+	logMaxLines int
+	oomKiller   bool
 	// workingDirectory string
 	// tempDirectory    string
 	// userID           int
@@ -74,12 +64,10 @@ type StartedService struct {
 type ServiceOptions struct {
 	Context context.Context
 	// Platform           adapter.PlatformInterface
-	Handler           PlatformHandler
-	Debug             bool
-	LogMaxLines       int
-	OOMKillerEnabled  bool
-	OOMKillerDisabled bool
-	OOMMemoryLimit    uint64
+	Handler     PlatformHandler
+	Debug       bool
+	LogMaxLines int
+	OOMKiller   bool
 	// WorkingDirectory   string
 	// TempDirectory      string
 	// UserID             int
@@ -91,12 +79,10 @@ func NewStartedService(options ServiceOptions) *StartedService {
 	s := &StartedService{
 		ctx: options.Context,
 		// platform:                options.Platform,
-		handler:           options.Handler,
-		debug:             options.Debug,
-		logMaxLines:       options.LogMaxLines,
-		oomKillerEnabled:  options.OOMKillerEnabled,
-		oomKillerDisabled: options.OOMKillerDisabled,
-		oomMemoryLimit:    options.OOMMemoryLimit,
+		handler:     options.Handler,
+		debug:       options.Debug,
+		logMaxLines: options.LogMaxLines,
+		oomKiller:   options.OOMKiller,
 		// workingDirectory: options.WorkingDirectory,
 		// tempDirectory:    options.TempDirectory,
 		// userID:           options.UserID,
@@ -182,7 +168,7 @@ func (s *StartedService) waitForStarted(ctx context.Context) error {
 func (s *StartedService) StartOrReloadService(profileContent string, options *OverrideOptions) error {
 	s.serviceAccess.Lock()
 	switch s.serviceStatus.Status {
-	case ServiceStatus_IDLE, ServiceStatus_STARTED, ServiceStatus_STARTING, ServiceStatus_FATAL:
+	case ServiceStatus_IDLE, ServiceStatus_STARTED, ServiceStatus_STARTING:
 	default:
 		s.serviceAccess.Unlock()
 		return os.ErrInvalid
@@ -240,14 +226,13 @@ func (s *StartedService) CloseService() error {
 		return os.ErrInvalid
 	}
 	s.updateStatus(ServiceStatus_STOPPING)
-	instance := s.instance
-	s.instance = nil
-	if instance != nil {
-		err := instance.Close()
+	if s.instance != nil {
+		err := s.instance.Close()
 		if err != nil {
 			return s.updateStatusError(err)
 		}
 	}
+	s.instance = nil
 	s.startedAt = time.Time{}
 	s.updateStatus(ServiceStatus_IDLE)
 	s.serviceAccess.Unlock()
@@ -696,42 +681,7 @@ func (s *StartedService) SetSystemProxyEnabled(ctx context.Context, request *Set
 	if err != nil {
 		return nil, err
 	}
-	return &emptypb.Empty{}, nil
-}
-
-func (s *StartedService) TriggerDebugCrash(ctx context.Context, request *DebugCrashRequest) (*emptypb.Empty, error) {
-	if !s.debug {
-		return nil, status.Error(codes.PermissionDenied, "debug crash trigger unavailable")
-	}
-	if request == nil {
-		return nil, status.Error(codes.InvalidArgument, "missing debug crash request")
-	}
-	switch request.Type {
-	case DebugCrashRequest_GO:
-		time.AfterFunc(200*time.Millisecond, func() {
-			*(*int)(unsafe.Pointer(uintptr(0))) = 0
-		})
-	case DebugCrashRequest_NATIVE:
-		err := s.handler.TriggerNativeCrash()
-		if err != nil {
-			return nil, err
-		}
-	default:
-		return nil, status.Error(codes.InvalidArgument, "unknown debug crash type")
-	}
-	return &emptypb.Empty{}, nil
-}
-
-func (s *StartedService) TriggerOOMReport(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
-	instance := s.Instance()
-	if instance == nil {
-		return nil, status.Error(codes.FailedPrecondition, "service not started")
-	}
-	reporter := service.FromContext[oomkiller.OOMReporter](instance.ctx)
-	if reporter == nil {
-		return nil, status.Error(codes.Unavailable, "OOM reporter not available")
-	}
-	return &emptypb.Empty{}, reporter.WriteReport(memory.Total())
+	return nil, err
 }
 
 func (s *StartedService) SubscribeConnections(request *SubscribeConnectionsRequest, server grpc.ServerStreamingServer[ConnectionEvents]) error {
@@ -999,11 +949,11 @@ func buildConnectionProto(metadata *trafficontrol.TrackerMetadata) *Connection {
 	var processInfo *ProcessInfo
 	if metadata.Metadata.ProcessInfo != nil {
 		processInfo = &ProcessInfo{
-			ProcessId:    metadata.Metadata.ProcessInfo.ProcessID,
-			UserId:       metadata.Metadata.ProcessInfo.UserId,
-			UserName:     metadata.Metadata.ProcessInfo.UserName,
-			ProcessPath:  metadata.Metadata.ProcessInfo.ProcessPath,
-			PackageNames: metadata.Metadata.ProcessInfo.AndroidPackageNames,
+			ProcessId:   metadata.Metadata.ProcessInfo.ProcessID,
+			UserId:      metadata.Metadata.ProcessInfo.UserId,
+			UserName:    metadata.Metadata.ProcessInfo.UserName,
+			ProcessPath: metadata.Metadata.ProcessInfo.ProcessPath,
+			PackageName: metadata.Metadata.ProcessInfo.AndroidPackageName,
 		}
 	}
 	return &Connection{
@@ -1068,12 +1018,9 @@ func (s *StartedService) GetDeprecatedWarnings(ctx context.Context, empty *empty
 	return &DeprecatedWarnings{
 		Warnings: common.Map(notes, func(it deprecated.Note) *DeprecatedWarning {
 			return &DeprecatedWarning{
-				Message:           it.Message(),
-				Impending:         it.Impending(),
-				MigrationLink:     it.MigrationLink,
-				Description:       it.Description,
-				DeprecatedVersion: it.DeprecatedVersion,
-				ScheduledVersion:  it.ScheduledVersion,
+				Message:       it.Message(),
+				Impending:     it.Impending(),
+				MigrationLink: it.MigrationLink,
 			}
 		}),
 	}, nil
@@ -1085,386 +1032,6 @@ func (s *StartedService) GetStartedAt(ctx context.Context, empty *emptypb.Empty)
 	return &StartedAt{StartedAt: s.startedAt.UnixMilli()}, nil
 }
 
-func (s *StartedService) SubscribeOutbounds(_ *emptypb.Empty, server grpc.ServerStreamingServer[OutboundList]) error {
-	err := s.waitForStarted(server.Context())
-	if err != nil {
-		return err
-	}
-	subscription, done, err := s.urlTestObserver.Subscribe()
-	if err != nil {
-		return err
-	}
-	defer s.urlTestObserver.UnSubscribe(subscription)
-	for {
-		s.serviceAccess.RLock()
-		if s.serviceStatus.Status != ServiceStatus_STARTED {
-			s.serviceAccess.RUnlock()
-			return os.ErrInvalid
-		}
-		boxService := s.instance
-		s.serviceAccess.RUnlock()
-		historyStorage := boxService.urlTestHistoryStorage
-		var list OutboundList
-		for _, ob := range boxService.instance.Outbound().Outbounds() {
-			item := &GroupItem{
-				Tag:  ob.Tag(),
-				Type: ob.Type(),
-			}
-			if history := historyStorage.LoadURLTestHistory(adapter.OutboundTag(ob)); history != nil {
-				item.UrlTestTime = history.Time.Unix()
-				item.UrlTestDelay = int32(history.Delay)
-			}
-			list.Outbounds = append(list.Outbounds, item)
-		}
-		for _, ep := range boxService.instance.Endpoint().Endpoints() {
-			item := &GroupItem{
-				Tag:  ep.Tag(),
-				Type: ep.Type(),
-			}
-			if history := historyStorage.LoadURLTestHistory(adapter.OutboundTag(ep)); history != nil {
-				item.UrlTestTime = history.Time.Unix()
-				item.UrlTestDelay = int32(history.Delay)
-			}
-			list.Outbounds = append(list.Outbounds, item)
-		}
-		err = server.Send(&list)
-		if err != nil {
-			return err
-		}
-		select {
-		case <-subscription:
-		case <-s.ctx.Done():
-			return s.ctx.Err()
-		case <-server.Context().Done():
-			return server.Context().Err()
-		case <-done:
-			return nil
-		}
-	}
-}
-
-func resolveOutbound(instance *Instance, tag string) (adapter.Outbound, error) {
-	if tag == "" {
-		return instance.instance.Outbound().Default(), nil
-	}
-	outbound, loaded := instance.instance.Outbound().Outbound(tag)
-	if !loaded {
-		return nil, E.New("outbound not found: ", tag)
-	}
-	return outbound, nil
-}
-
-func (s *StartedService) StartNetworkQualityTest(
-	request *NetworkQualityTestRequest,
-	server grpc.ServerStreamingServer[NetworkQualityTestProgress],
-) error {
-	err := s.waitForStarted(server.Context())
-	if err != nil {
-		return err
-	}
-	s.serviceAccess.RLock()
-	boxService := s.instance
-	s.serviceAccess.RUnlock()
-
-	outbound, err := resolveOutbound(boxService, request.OutboundTag)
-	if err != nil {
-		return err
-	}
-
-	resolvedDialer := dialer.NewResolveDialer(boxService.ctx, outbound, true, "", adapter.DNSQueryOptions{}, 0)
-	httpClient := networkquality.NewHTTPClient(resolvedDialer)
-	defer httpClient.CloseIdleConnections()
-
-	measurementClientFactory, err := networkquality.NewOptionalHTTP3Factory(resolvedDialer, request.Http3)
-	if err != nil {
-		return err
-	}
-
-	result, nqErr := networkquality.Run(networkquality.Options{
-		ConfigURL:            request.ConfigURL,
-		HTTPClient:           httpClient,
-		NewMeasurementClient: measurementClientFactory,
-		Serial:               request.Serial,
-		MaxRuntime:           time.Duration(request.MaxRuntimeSeconds) * time.Second,
-		Context:              server.Context(),
-		OnProgress: func(p networkquality.Progress) {
-			_ = server.Send(&NetworkQualityTestProgress{
-				Phase:                    int32(p.Phase),
-				DownloadCapacity:         p.DownloadCapacity,
-				UploadCapacity:           p.UploadCapacity,
-				DownloadRPM:              p.DownloadRPM,
-				UploadRPM:                p.UploadRPM,
-				IdleLatencyMs:            p.IdleLatencyMs,
-				ElapsedMs:                p.ElapsedMs,
-				DownloadCapacityAccuracy: int32(p.DownloadCapacityAccuracy),
-				UploadCapacityAccuracy:   int32(p.UploadCapacityAccuracy),
-				DownloadRPMAccuracy:      int32(p.DownloadRPMAccuracy),
-				UploadRPMAccuracy:        int32(p.UploadRPMAccuracy),
-			})
-		},
-	})
-	if nqErr != nil {
-		return server.Send(&NetworkQualityTestProgress{
-			IsFinal: true,
-			Error:   nqErr.Error(),
-		})
-	}
-	return server.Send(&NetworkQualityTestProgress{
-		Phase:                    int32(networkquality.PhaseDone),
-		DownloadCapacity:         result.DownloadCapacity,
-		UploadCapacity:           result.UploadCapacity,
-		DownloadRPM:              result.DownloadRPM,
-		UploadRPM:                result.UploadRPM,
-		IdleLatencyMs:            result.IdleLatencyMs,
-		IsFinal:                  true,
-		DownloadCapacityAccuracy: int32(result.DownloadCapacityAccuracy),
-		UploadCapacityAccuracy:   int32(result.UploadCapacityAccuracy),
-		DownloadRPMAccuracy:      int32(result.DownloadRPMAccuracy),
-		UploadRPMAccuracy:        int32(result.UploadRPMAccuracy),
-	})
-}
-
-func (s *StartedService) StartSTUNTest(
-	request *STUNTestRequest,
-	server grpc.ServerStreamingServer[STUNTestProgress],
-) error {
-	err := s.waitForStarted(server.Context())
-	if err != nil {
-		return err
-	}
-	s.serviceAccess.RLock()
-	boxService := s.instance
-	s.serviceAccess.RUnlock()
-
-	outbound, err := resolveOutbound(boxService, request.OutboundTag)
-	if err != nil {
-		return err
-	}
-
-	resolvedDialer := dialer.NewResolveDialer(boxService.ctx, outbound, true, "", adapter.DNSQueryOptions{}, 0)
-
-	result, stunErr := stun.Run(stun.Options{
-		Server:  request.Server,
-		Dialer:  resolvedDialer,
-		Context: server.Context(),
-		OnProgress: func(p stun.Progress) {
-			_ = server.Send(&STUNTestProgress{
-				Phase:        int32(p.Phase),
-				ExternalAddr: p.ExternalAddr,
-				LatencyMs:    p.LatencyMs,
-				NatMapping:   int32(p.NATMapping),
-				NatFiltering: int32(p.NATFiltering),
-			})
-		},
-	})
-	if stunErr != nil {
-		return server.Send(&STUNTestProgress{
-			IsFinal: true,
-			Error:   stunErr.Error(),
-		})
-	}
-	return server.Send(&STUNTestProgress{
-		Phase:            int32(stun.PhaseDone),
-		ExternalAddr:     result.ExternalAddr,
-		LatencyMs:        result.LatencyMs,
-		NatMapping:       int32(result.NATMapping),
-		NatFiltering:     int32(result.NATFiltering),
-		IsFinal:          true,
-		NatTypeSupported: result.NATTypeSupported,
-	})
-}
-
-func (s *StartedService) SubscribeTailscaleStatus(
-	_ *emptypb.Empty,
-	server grpc.ServerStreamingServer[TailscaleStatusUpdate],
-) error {
-	err := s.waitForStarted(server.Context())
-	if err != nil {
-		return err
-	}
-	s.serviceAccess.RLock()
-	boxService := s.instance
-	s.serviceAccess.RUnlock()
-
-	endpointManager := service.FromContext[adapter.EndpointManager](boxService.ctx)
-	if endpointManager == nil {
-		return status.Error(codes.FailedPrecondition, "endpoint manager not available")
-	}
-
-	type tailscaleEndpoint struct {
-		tag      string
-		provider adapter.TailscaleEndpoint
-	}
-	var endpoints []tailscaleEndpoint
-	for _, endpoint := range endpointManager.Endpoints() {
-		if endpoint.Type() != C.TypeTailscale {
-			continue
-		}
-		provider, loaded := endpoint.(adapter.TailscaleEndpoint)
-		if !loaded {
-			continue
-		}
-		endpoints = append(endpoints, tailscaleEndpoint{
-			tag:      endpoint.Tag(),
-			provider: provider,
-		})
-	}
-	if len(endpoints) == 0 {
-		return status.Error(codes.NotFound, "no Tailscale endpoint found")
-	}
-
-	type taggedStatus struct {
-		tag    string
-		status *adapter.TailscaleEndpointStatus
-	}
-	updates := make(chan taggedStatus, len(endpoints))
-	ctx, cancel := context.WithCancel(server.Context())
-	defer cancel()
-
-	var waitGroup sync.WaitGroup
-	for _, endpoint := range endpoints {
-		waitGroup.Add(1)
-		go func(tag string, provider adapter.TailscaleEndpoint) {
-			defer waitGroup.Done()
-			_ = provider.SubscribeTailscaleStatus(ctx, func(endpointStatus *adapter.TailscaleEndpointStatus) {
-				select {
-				case updates <- taggedStatus{tag: tag, status: endpointStatus}:
-				case <-ctx.Done():
-				}
-			})
-		}(endpoint.tag, endpoint.provider)
-	}
-
-	go func() {
-		waitGroup.Wait()
-		close(updates)
-	}()
-
-	var tags []string
-	statuses := make(map[string]*adapter.TailscaleEndpointStatus, len(endpoints))
-	for update := range updates {
-		if _, exists := statuses[update.tag]; !exists {
-			tags = append(tags, update.tag)
-		}
-		statuses[update.tag] = update.status
-		protoEndpoints := make([]*TailscaleEndpointStatus, 0, len(statuses))
-		for _, tag := range tags {
-			protoEndpoints = append(protoEndpoints, tailscaleEndpointStatusToProto(tag, statuses[tag]))
-		}
-		sendErr := server.Send(&TailscaleStatusUpdate{
-			Endpoints: protoEndpoints,
-		})
-		if sendErr != nil {
-			return sendErr
-		}
-	}
-	return nil
-}
-
-func tailscaleEndpointStatusToProto(tag string, s *adapter.TailscaleEndpointStatus) *TailscaleEndpointStatus {
-	userGroups := make([]*TailscaleUserGroup, len(s.UserGroups))
-	for i, group := range s.UserGroups {
-		peers := make([]*TailscalePeer, len(group.Peers))
-		for j, peer := range group.Peers {
-			peers[j] = tailscalePeerToProto(peer)
-		}
-		userGroups[i] = &TailscaleUserGroup{
-			UserID:        group.UserID,
-			LoginName:     group.LoginName,
-			DisplayName:   group.DisplayName,
-			ProfilePicURL: group.ProfilePicURL,
-			Peers:         peers,
-		}
-	}
-	result := &TailscaleEndpointStatus{
-		EndpointTag:    tag,
-		BackendState:   s.BackendState,
-		AuthURL:        s.AuthURL,
-		NetworkName:    s.NetworkName,
-		MagicDNSSuffix: s.MagicDNSSuffix,
-		UserGroups:     userGroups,
-	}
-	if s.Self != nil {
-		result.Self = tailscalePeerToProto(s.Self)
-	}
-	return result
-}
-
-func tailscalePeerToProto(peer *adapter.TailscalePeer) *TailscalePeer {
-	return &TailscalePeer{
-		HostName:       peer.HostName,
-		DnsName:        peer.DNSName,
-		Os:             peer.OS,
-		TailscaleIPs:   peer.TailscaleIPs,
-		Online:         peer.Online,
-		ExitNode:       peer.ExitNode,
-		ExitNodeOption: peer.ExitNodeOption,
-		Active:         peer.Active,
-		RxBytes:        peer.RxBytes,
-		TxBytes:        peer.TxBytes,
-		KeyExpiry:      peer.KeyExpiry,
-	}
-}
-
-func (s *StartedService) StartTailscalePing(
-	request *TailscalePingRequest,
-	server grpc.ServerStreamingServer[TailscalePingResponse],
-) error {
-	err := s.waitForStarted(server.Context())
-	if err != nil {
-		return err
-	}
-	s.serviceAccess.RLock()
-	boxService := s.instance
-	s.serviceAccess.RUnlock()
-
-	endpointManager := service.FromContext[adapter.EndpointManager](boxService.ctx)
-	if endpointManager == nil {
-		return status.Error(codes.FailedPrecondition, "endpoint manager not available")
-	}
-
-	var provider adapter.TailscaleEndpoint
-	if request.EndpointTag != "" {
-		endpoint, loaded := endpointManager.Get(request.EndpointTag)
-		if !loaded {
-			return status.Error(codes.NotFound, "endpoint not found: "+request.EndpointTag)
-		}
-		if endpoint.Type() != C.TypeTailscale {
-			return status.Error(codes.InvalidArgument, "endpoint is not Tailscale: "+request.EndpointTag)
-		}
-		pingProvider, loaded := endpoint.(adapter.TailscaleEndpoint)
-		if !loaded {
-			return status.Error(codes.FailedPrecondition, "endpoint does not support ping")
-		}
-		provider = pingProvider
-	} else {
-		for _, endpoint := range endpointManager.Endpoints() {
-			if endpoint.Type() != C.TypeTailscale {
-				continue
-			}
-			pingProvider, loaded := endpoint.(adapter.TailscaleEndpoint)
-			if loaded {
-				provider = pingProvider
-				break
-			}
-		}
-		if provider == nil {
-			return status.Error(codes.NotFound, "no Tailscale endpoint found")
-		}
-	}
-
-	return provider.StartTailscalePing(server.Context(), request.PeerIP, func(result *adapter.TailscalePingResult) {
-		_ = server.Send(&TailscalePingResponse{
-			LatencyMs:      result.LatencyMs,
-			IsDirect:       result.IsDirect,
-			Endpoint:       result.Endpoint,
-			DerpRegionID:   result.DERPRegionID,
-			DerpRegionCode: result.DERPRegionCode,
-			Error:          result.Error,
-		})
-	})
-}
-
 func (s *StartedService) mustEmbedUnimplementedStartedServiceServer() {
 }
 

daemon/started_service.proto

@@ -26,20 +26,12 @@ service StartedService {
 
   rpc GetSystemProxyStatus(google.protobuf.Empty) returns(SystemProxyStatus) {}
   rpc SetSystemProxyEnabled(SetSystemProxyEnabledRequest) returns(google.protobuf.Empty) {}
-  rpc TriggerDebugCrash(DebugCrashRequest) returns(google.protobuf.Empty) {}
-  rpc TriggerOOMReport(google.protobuf.Empty) returns(google.protobuf.Empty) {}
 
   rpc SubscribeConnections(SubscribeConnectionsRequest) returns(stream ConnectionEvents) {}
   rpc CloseConnection(CloseConnectionRequest) returns(google.protobuf.Empty) {}
   rpc CloseAllConnections(google.protobuf.Empty) returns(google.protobuf.Empty) {}
   rpc GetDeprecatedWarnings(google.protobuf.Empty) returns(DeprecatedWarnings) {}
   rpc GetStartedAt(google.protobuf.Empty) returns(StartedAt) {}
-
-  rpc SubscribeOutbounds(google.protobuf.Empty) returns (stream OutboundList) {}
-  rpc StartNetworkQualityTest(NetworkQualityTestRequest) returns (stream NetworkQualityTestProgress) {}
-  rpc StartSTUNTest(STUNTestRequest) returns (stream STUNTestProgress) {}
-  rpc SubscribeTailscaleStatus(google.protobuf.Empty) returns (stream TailscaleStatusUpdate) {}
-  rpc StartTailscalePing(TailscalePingRequest) returns (stream TailscalePingResponse) {}
 }
 
 message ServiceStatus {
@@ -149,15 +141,6 @@ message SetSystemProxyEnabledRequest {
   bool enabled = 1;
 }
 
-message DebugCrashRequest {
-  enum Type {
-    GO = 0;
-    NATIVE = 1;
-  }
-
-  Type type = 1;
-}
-
 message SubscribeConnectionsRequest {
   int64 interval = 1;
 }
@@ -212,7 +195,7 @@ message ProcessInfo {
   int32 userId = 2;
   string userName = 3;
   string processPath = 4;
-  repeated string packageNames = 5;
+  string packageName = 5;
 }
 
 message CloseConnectionRequest {
@@ -227,105 +210,8 @@ message DeprecatedWarning {
   string message = 1;
   bool impending = 2;
   string migrationLink = 3;
-  string description = 4;
-  string deprecatedVersion = 5;
-  string scheduledVersion = 6;
 }
 
 message StartedAt {
   int64 startedAt = 1;
 }
-
-message OutboundList {
-  repeated GroupItem outbounds = 1;
-}
-
-message NetworkQualityTestRequest {
-  string configURL = 1;
-  string outboundTag = 2;
-  bool serial = 3;
-  int32 maxRuntimeSeconds = 4;
-  bool http3 = 5;
-}
-
-message NetworkQualityTestProgress {
-  int32 phase = 1;
-  int64 downloadCapacity = 2;
-  int64 uploadCapacity = 3;
-  int32 downloadRPM = 4;
-  int32 uploadRPM = 5;
-  int32 idleLatencyMs = 6;
-  int64 elapsedMs = 7;
-  bool isFinal = 8;
-  string error = 9;
-  int32 downloadCapacityAccuracy = 10;
-  int32 uploadCapacityAccuracy = 11;
-  int32 downloadRPMAccuracy = 12;
-  int32 uploadRPMAccuracy = 13;
-}
-
-message STUNTestRequest {
-  string server = 1;
-  string outboundTag = 2;
-}
-
-message STUNTestProgress {
-  int32 phase = 1;
-  string externalAddr = 2;
-  int32 latencyMs = 3;
-  int32 natMapping = 4;
-  int32 natFiltering = 5;
-  bool isFinal = 6;
-  string error = 7;
-  bool natTypeSupported = 8;
-}
-
-message TailscaleStatusUpdate {
-  repeated TailscaleEndpointStatus endpoints = 1;
-}
-
-message TailscaleEndpointStatus {
-  string endpointTag = 1;
-  string backendState = 2;
-  string authURL = 3;
-  string networkName = 4;
-  string magicDNSSuffix = 5;
-  TailscalePeer self = 6;
-  repeated TailscaleUserGroup userGroups = 7;
-}
-
-message TailscaleUserGroup {
-  int64 userID = 1;
-  string loginName = 2;
-  string displayName = 3;
-  string profilePicURL = 4;
-  repeated TailscalePeer peers = 5;
-}
-
-message TailscalePeer {
-  string hostName = 1;
-  string dnsName = 2;
-  string os = 3;
-  repeated string tailscaleIPs = 4;
-  bool online = 5;
-  bool exitNode = 6;
-  bool exitNodeOption = 7;
-  bool active = 8;
-  int64 rxBytes = 9;
-  int64 txBytes = 10;
-  int64 keyExpiry = 11;
-}
-
-message TailscalePingRequest {
-  string endpointTag = 1;
-  string peerIP = 2;
-}
-
-message TailscalePingResponse {
-  double latencyMs = 1;
-  bool isDirect = 2;
-  string endpoint = 3;
-  int32 derpRegionID = 4;
-  string derpRegionCode = 5;
-  string error = 6;
-}

daemon/started_service_grpc.pb.go

@@ -15,34 +15,27 @@ import (
 const _ = grpc.SupportPackageIsVersion9
 
 const (
-	StartedService_StopService_FullMethodName              = "/daemon.StartedService/StopService"
-	StartedService_ReloadService_FullMethodName            = "/daemon.StartedService/ReloadService"
-	StartedService_SubscribeServiceStatus_FullMethodName   = "/daemon.StartedService/SubscribeServiceStatus"
-	StartedService_SubscribeLog_FullMethodName             = "/daemon.StartedService/SubscribeLog"
-	StartedService_GetDefaultLogLevel_FullMethodName       = "/daemon.StartedService/GetDefaultLogLevel"
-	StartedService_ClearLogs_FullMethodName                = "/daemon.StartedService/ClearLogs"
-	StartedService_SubscribeStatus_FullMethodName          = "/daemon.StartedService/SubscribeStatus"
-	StartedService_SubscribeGroups_FullMethodName          = "/daemon.StartedService/SubscribeGroups"
-	StartedService_GetClashModeStatus_FullMethodName       = "/daemon.StartedService/GetClashModeStatus"
-	StartedService_SubscribeClashMode_FullMethodName       = "/daemon.StartedService/SubscribeClashMode"
-	StartedService_SetClashMode_FullMethodName             = "/daemon.StartedService/SetClashMode"
-	StartedService_URLTest_FullMethodName                  = "/daemon.StartedService/URLTest"
-	StartedService_SelectOutbound_FullMethodName           = "/daemon.StartedService/SelectOutbound"
-	StartedService_SetGroupExpand_FullMethodName           = "/daemon.StartedService/SetGroupExpand"
-	StartedService_GetSystemProxyStatus_FullMethodName     = "/daemon.StartedService/GetSystemProxyStatus"
-	StartedService_SetSystemProxyEnabled_FullMethodName    = "/daemon.StartedService/SetSystemProxyEnabled"
-	StartedService_TriggerDebugCrash_FullMethodName        = "/daemon.StartedService/TriggerDebugCrash"
-	StartedService_TriggerOOMReport_FullMethodName         = "/daemon.StartedService/TriggerOOMReport"
-	StartedService_SubscribeConnections_FullMethodName     = "/daemon.StartedService/SubscribeConnections"
-	StartedService_CloseConnection_FullMethodName          = "/daemon.StartedService/CloseConnection"
-	StartedService_CloseAllConnections_FullMethodName      = "/daemon.StartedService/CloseAllConnections"
-	StartedService_GetDeprecatedWarnings_FullMethodName    = "/daemon.StartedService/GetDeprecatedWarnings"
-	StartedService_GetStartedAt_FullMethodName             = "/daemon.StartedService/GetStartedAt"
-	StartedService_SubscribeOutbounds_FullMethodName       = "/daemon.StartedService/SubscribeOutbounds"
-	StartedService_StartNetworkQualityTest_FullMethodName  = "/daemon.StartedService/StartNetworkQualityTest"
-	StartedService_StartSTUNTest_FullMethodName            = "/daemon.StartedService/StartSTUNTest"
-	StartedService_SubscribeTailscaleStatus_FullMethodName = "/daemon.StartedService/SubscribeTailscaleStatus"
-	StartedService_StartTailscalePing_FullMethodName       = "/daemon.StartedService/StartTailscalePing"
+	StartedService_StopService_FullMethodName            = "/daemon.StartedService/StopService"
+	StartedService_ReloadService_FullMethodName          = "/daemon.StartedService/ReloadService"
+	StartedService_SubscribeServiceStatus_FullMethodName = "/daemon.StartedService/SubscribeServiceStatus"
+	StartedService_SubscribeLog_FullMethodName           = "/daemon.StartedService/SubscribeLog"
+	StartedService_GetDefaultLogLevel_FullMethodName     = "/daemon.StartedService/GetDefaultLogLevel"
+	StartedService_ClearLogs_FullMethodName              = "/daemon.StartedService/ClearLogs"
+	StartedService_SubscribeStatus_FullMethodName        = "/daemon.StartedService/SubscribeStatus"
+	StartedService_SubscribeGroups_FullMethodName        = "/daemon.StartedService/SubscribeGroups"
+	StartedService_GetClashModeStatus_FullMethodName     = "/daemon.StartedService/GetClashModeStatus"
+	StartedService_SubscribeClashMode_FullMethodName     = "/daemon.StartedService/SubscribeClashMode"
+	StartedService_SetClashMode_FullMethodName           = "/daemon.StartedService/SetClashMode"
+	StartedService_URLTest_FullMethodName                = "/daemon.StartedService/URLTest"
+	StartedService_SelectOutbound_FullMethodName         = "/daemon.StartedService/SelectOutbound"
+	StartedService_SetGroupExpand_FullMethodName         = "/daemon.StartedService/SetGroupExpand"
+	StartedService_GetSystemProxyStatus_FullMethodName   = "/daemon.StartedService/GetSystemProxyStatus"
+	StartedService_SetSystemProxyEnabled_FullMethodName  = "/daemon.StartedService/SetSystemProxyEnabled"
+	StartedService_SubscribeConnections_FullMethodName   = "/daemon.StartedService/SubscribeConnections"
+	StartedService_CloseConnection_FullMethodName        = "/daemon.StartedService/CloseConnection"
+	StartedService_CloseAllConnections_FullMethodName    = "/daemon.StartedService/CloseAllConnections"
+	StartedService_GetDeprecatedWarnings_FullMethodName  = "/daemon.StartedService/GetDeprecatedWarnings"
+	StartedService_GetStartedAt_FullMethodName           = "/daemon.StartedService/GetStartedAt"
 )
 
 // StartedServiceClient is the client API for StartedService service.
@@ -65,18 +58,11 @@ type StartedServiceClient interface {
 	SetGroupExpand(ctx context.Context, in *SetGroupExpandRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	GetSystemProxyStatus(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*SystemProxyStatus, error)
 	SetSystemProxyEnabled(ctx context.Context, in *SetSystemProxyEnabledRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
-	TriggerDebugCrash(ctx context.Context, in *DebugCrashRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
-	TriggerOOMReport(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	SubscribeConnections(ctx context.Context, in *SubscribeConnectionsRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ConnectionEvents], error)
 	CloseConnection(ctx context.Context, in *CloseConnectionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	CloseAllConnections(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	GetDeprecatedWarnings(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*DeprecatedWarnings, error)
 	GetStartedAt(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*StartedAt, error)
-	SubscribeOutbounds(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (grpc.ServerStreamingClient[OutboundList], error)
-	StartNetworkQualityTest(ctx context.Context, in *NetworkQualityTestRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[NetworkQualityTestProgress], error)
-	StartSTUNTest(ctx context.Context, in *STUNTestRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[STUNTestProgress], error)
-	SubscribeTailscaleStatus(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (grpc.ServerStreamingClient[TailscaleStatusUpdate], error)
-	StartTailscalePing(ctx context.Context, in *TailscalePingRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[TailscalePingResponse], error)
 }
 
 type startedServiceClient struct {
@@ -292,26 +278,6 @@ func (c *startedServiceClient) SetSystemProxyEnabled(ctx context.Context, in *Se
 	return out, nil
 }
 
-func (c *startedServiceClient) TriggerDebugCrash(ctx context.Context, in *DebugCrashRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(emptypb.Empty)
-	err := c.cc.Invoke(ctx, StartedService_TriggerDebugCrash_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *startedServiceClient) TriggerOOMReport(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(emptypb.Empty)
-	err := c.cc.Invoke(ctx, StartedService_TriggerOOMReport_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
 func (c *startedServiceClient) SubscribeConnections(ctx context.Context, in *SubscribeConnectionsRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ConnectionEvents], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	stream, err := c.cc.NewStream(ctx, &StartedService_ServiceDesc.Streams[5], StartedService_SubscribeConnections_FullMethodName, cOpts...)
@@ -371,101 +337,6 @@ func (c *startedServiceClient) GetStartedAt(ctx context.Context, in *emptypb.Emp
 	return out, nil
 }
 
-func (c *startedServiceClient) SubscribeOutbounds(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (grpc.ServerStreamingClient[OutboundList], error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	stream, err := c.cc.NewStream(ctx, &StartedService_ServiceDesc.Streams[6], StartedService_SubscribeOutbounds_FullMethodName, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	x := &grpc.GenericClientStream[emptypb.Empty, OutboundList]{ClientStream: stream}
-	if err := x.ClientStream.SendMsg(in); err != nil {
-		return nil, err
-	}
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	return x, nil
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_SubscribeOutboundsClient = grpc.ServerStreamingClient[OutboundList]
-
-func (c *startedServiceClient) StartNetworkQualityTest(ctx context.Context, in *NetworkQualityTestRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[NetworkQualityTestProgress], error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	stream, err := c.cc.NewStream(ctx, &StartedService_ServiceDesc.Streams[7], StartedService_StartNetworkQualityTest_FullMethodName, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	x := &grpc.GenericClientStream[NetworkQualityTestRequest, NetworkQualityTestProgress]{ClientStream: stream}
-	if err := x.ClientStream.SendMsg(in); err != nil {
-		return nil, err
-	}
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	return x, nil
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_StartNetworkQualityTestClient = grpc.ServerStreamingClient[NetworkQualityTestProgress]
-
-func (c *startedServiceClient) StartSTUNTest(ctx context.Context, in *STUNTestRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[STUNTestProgress], error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	stream, err := c.cc.NewStream(ctx, &StartedService_ServiceDesc.Streams[8], StartedService_StartSTUNTest_FullMethodName, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	x := &grpc.GenericClientStream[STUNTestRequest, STUNTestProgress]{ClientStream: stream}
-	if err := x.ClientStream.SendMsg(in); err != nil {
-		return nil, err
-	}
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	return x, nil
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_StartSTUNTestClient = grpc.ServerStreamingClient[STUNTestProgress]
-
-func (c *startedServiceClient) SubscribeTailscaleStatus(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (grpc.ServerStreamingClient[TailscaleStatusUpdate], error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	stream, err := c.cc.NewStream(ctx, &StartedService_ServiceDesc.Streams[9], StartedService_SubscribeTailscaleStatus_FullMethodName, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	x := &grpc.GenericClientStream[emptypb.Empty, TailscaleStatusUpdate]{ClientStream: stream}
-	if err := x.ClientStream.SendMsg(in); err != nil {
-		return nil, err
-	}
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	return x, nil
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_SubscribeTailscaleStatusClient = grpc.ServerStreamingClient[TailscaleStatusUpdate]
-
-func (c *startedServiceClient) StartTailscalePing(ctx context.Context, in *TailscalePingRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[TailscalePingResponse], error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	stream, err := c.cc.NewStream(ctx, &StartedService_ServiceDesc.Streams[10], StartedService_StartTailscalePing_FullMethodName, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	x := &grpc.GenericClientStream[TailscalePingRequest, TailscalePingResponse]{ClientStream: stream}
-	if err := x.ClientStream.SendMsg(in); err != nil {
-		return nil, err
-	}
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	return x, nil
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_StartTailscalePingClient = grpc.ServerStreamingClient[TailscalePingResponse]
-
 // StartedServiceServer is the server API for StartedService service.
 // All implementations must embed UnimplementedStartedServiceServer
 // for forward compatibility.
@@ -486,18 +357,11 @@ type StartedServiceServer interface {
 	SetGroupExpand(context.Context, *SetGroupExpandRequest) (*emptypb.Empty, error)
 	GetSystemProxyStatus(context.Context, *emptypb.Empty) (*SystemProxyStatus, error)
 	SetSystemProxyEnabled(context.Context, *SetSystemProxyEnabledRequest) (*emptypb.Empty, error)
-	TriggerDebugCrash(context.Context, *DebugCrashRequest) (*emptypb.Empty, error)
-	TriggerOOMReport(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
 	SubscribeConnections(*SubscribeConnectionsRequest, grpc.ServerStreamingServer[ConnectionEvents]) error
 	CloseConnection(context.Context, *CloseConnectionRequest) (*emptypb.Empty, error)
 	CloseAllConnections(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
 	GetDeprecatedWarnings(context.Context, *emptypb.Empty) (*DeprecatedWarnings, error)
 	GetStartedAt(context.Context, *emptypb.Empty) (*StartedAt, error)
-	SubscribeOutbounds(*emptypb.Empty, grpc.ServerStreamingServer[OutboundList]) error
-	StartNetworkQualityTest(*NetworkQualityTestRequest, grpc.ServerStreamingServer[NetworkQualityTestProgress]) error
-	StartSTUNTest(*STUNTestRequest, grpc.ServerStreamingServer[STUNTestProgress]) error
-	SubscribeTailscaleStatus(*emptypb.Empty, grpc.ServerStreamingServer[TailscaleStatusUpdate]) error
-	StartTailscalePing(*TailscalePingRequest, grpc.ServerStreamingServer[TailscalePingResponse]) error
 	mustEmbedUnimplementedStartedServiceServer()
 }
 
@@ -572,14 +436,6 @@ func (UnimplementedStartedServiceServer) SetSystemProxyEnabled(context.Context,
 	return nil, status.Error(codes.Unimplemented, "method SetSystemProxyEnabled not implemented")
 }
 
-func (UnimplementedStartedServiceServer) TriggerDebugCrash(context.Context, *DebugCrashRequest) (*emptypb.Empty, error) {
-	return nil, status.Error(codes.Unimplemented, "method TriggerDebugCrash not implemented")
-}
-
-func (UnimplementedStartedServiceServer) TriggerOOMReport(context.Context, *emptypb.Empty) (*emptypb.Empty, error) {
-	return nil, status.Error(codes.Unimplemented, "method TriggerOOMReport not implemented")
-}
-
 func (UnimplementedStartedServiceServer) SubscribeConnections(*SubscribeConnectionsRequest, grpc.ServerStreamingServer[ConnectionEvents]) error {
 	return status.Error(codes.Unimplemented, "method SubscribeConnections not implemented")
 }
@@ -599,26 +455,6 @@ func (UnimplementedStartedServiceServer) GetDeprecatedWarnings(context.Context,
 func (UnimplementedStartedServiceServer) GetStartedAt(context.Context, *emptypb.Empty) (*StartedAt, error) {
 	return nil, status.Error(codes.Unimplemented, "method GetStartedAt not implemented")
 }
-
-func (UnimplementedStartedServiceServer) SubscribeOutbounds(*emptypb.Empty, grpc.ServerStreamingServer[OutboundList]) error {
-	return status.Error(codes.Unimplemented, "method SubscribeOutbounds not implemented")
-}
-
-func (UnimplementedStartedServiceServer) StartNetworkQualityTest(*NetworkQualityTestRequest, grpc.ServerStreamingServer[NetworkQualityTestProgress]) error {
-	return status.Error(codes.Unimplemented, "method StartNetworkQualityTest not implemented")
-}
-
-func (UnimplementedStartedServiceServer) StartSTUNTest(*STUNTestRequest, grpc.ServerStreamingServer[STUNTestProgress]) error {
-	return status.Error(codes.Unimplemented, "method StartSTUNTest not implemented")
-}
-
-func (UnimplementedStartedServiceServer) SubscribeTailscaleStatus(*emptypb.Empty, grpc.ServerStreamingServer[TailscaleStatusUpdate]) error {
-	return status.Error(codes.Unimplemented, "method SubscribeTailscaleStatus not implemented")
-}
-
-func (UnimplementedStartedServiceServer) StartTailscalePing(*TailscalePingRequest, grpc.ServerStreamingServer[TailscalePingResponse]) error {
-	return status.Error(codes.Unimplemented, "method StartTailscalePing not implemented")
-}
 func (UnimplementedStartedServiceServer) mustEmbedUnimplementedStartedServiceServer() {}
 func (UnimplementedStartedServiceServer) testEmbeddedByValue()                        {}
 
@@ -893,42 +729,6 @@ func _StartedService_SetSystemProxyEnabled_Handler(srv interface{}, ctx context.
 	return interceptor(ctx, in, info, handler)
 }
 
-func _StartedService_TriggerDebugCrash_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(DebugCrashRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(StartedServiceServer).TriggerDebugCrash(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: StartedService_TriggerDebugCrash_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(StartedServiceServer).TriggerDebugCrash(ctx, req.(*DebugCrashRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _StartedService_TriggerOOMReport_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(emptypb.Empty)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(StartedServiceServer).TriggerOOMReport(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: StartedService_TriggerOOMReport_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(StartedServiceServer).TriggerOOMReport(ctx, req.(*emptypb.Empty))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
 func _StartedService_SubscribeConnections_Handler(srv interface{}, stream grpc.ServerStream) error {
 	m := new(SubscribeConnectionsRequest)
 	if err := stream.RecvMsg(m); err != nil {
@@ -1012,61 +812,6 @@ func _StartedService_GetStartedAt_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
-func _StartedService_SubscribeOutbounds_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(emptypb.Empty)
-	if err := stream.RecvMsg(m); err != nil {
-		return err
-	}
-	return srv.(StartedServiceServer).SubscribeOutbounds(m, &grpc.GenericServerStream[emptypb.Empty, OutboundList]{ServerStream: stream})
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_SubscribeOutboundsServer = grpc.ServerStreamingServer[OutboundList]
-
-func _StartedService_StartNetworkQualityTest_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(NetworkQualityTestRequest)
-	if err := stream.RecvMsg(m); err != nil {
-		return err
-	}
-	return srv.(StartedServiceServer).StartNetworkQualityTest(m, &grpc.GenericServerStream[NetworkQualityTestRequest, NetworkQualityTestProgress]{ServerStream: stream})
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_StartNetworkQualityTestServer = grpc.ServerStreamingServer[NetworkQualityTestProgress]
-
-func _StartedService_StartSTUNTest_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(STUNTestRequest)
-	if err := stream.RecvMsg(m); err != nil {
-		return err
-	}
-	return srv.(StartedServiceServer).StartSTUNTest(m, &grpc.GenericServerStream[STUNTestRequest, STUNTestProgress]{ServerStream: stream})
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_StartSTUNTestServer = grpc.ServerStreamingServer[STUNTestProgress]
-
-func _StartedService_SubscribeTailscaleStatus_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(emptypb.Empty)
-	if err := stream.RecvMsg(m); err != nil {
-		return err
-	}
-	return srv.(StartedServiceServer).SubscribeTailscaleStatus(m, &grpc.GenericServerStream[emptypb.Empty, TailscaleStatusUpdate]{ServerStream: stream})
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_SubscribeTailscaleStatusServer = grpc.ServerStreamingServer[TailscaleStatusUpdate]
-
-func _StartedService_StartTailscalePing_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(TailscalePingRequest)
-	if err := stream.RecvMsg(m); err != nil {
-		return err
-	}
-	return srv.(StartedServiceServer).StartTailscalePing(m, &grpc.GenericServerStream[TailscalePingRequest, TailscalePingResponse]{ServerStream: stream})
-}
-
-// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
-type StartedService_StartTailscalePingServer = grpc.ServerStreamingServer[TailscalePingResponse]
-
 // StartedService_ServiceDesc is the grpc.ServiceDesc for StartedService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -1118,14 +863,6 @@ var StartedService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "SetSystemProxyEnabled",
 			Handler:    _StartedService_SetSystemProxyEnabled_Handler,
 		},
-		{
-			MethodName: "TriggerDebugCrash",
-			Handler:    _StartedService_TriggerDebugCrash_Handler,
-		},
-		{
-			MethodName: "TriggerOOMReport",
-			Handler:    _StartedService_TriggerOOMReport_Handler,
-		},
 		{
 			MethodName: "CloseConnection",
 			Handler:    _StartedService_CloseConnection_Handler,
@@ -1174,31 +911,6 @@ var StartedService_ServiceDesc = grpc.ServiceDesc{
 			Handler:       _StartedService_SubscribeConnections_Handler,
 			ServerStreams: true,
 		},
-		{
-			StreamName:    "SubscribeOutbounds",
-			Handler:       _StartedService_SubscribeOutbounds_Handler,
-			ServerStreams: true,
-		},
-		{
-			StreamName:    "StartNetworkQualityTest",
-			Handler:       _StartedService_StartNetworkQualityTest_Handler,
-			ServerStreams: true,
-		},
-		{
-			StreamName:    "StartSTUNTest",
-			Handler:       _StartedService_StartSTUNTest_Handler,
-			ServerStreams: true,
-		},
-		{
-			StreamName:    "SubscribeTailscaleStatus",
-			Handler:       _StartedService_SubscribeTailscaleStatus_Handler,
-			ServerStreams: true,
-		},
-		{
-			StreamName:    "StartTailscalePing",
-			Handler:       _StartedService_StartTailscalePing_Handler,
-			ServerStreams: true,
-		},
 	},
 	Metadata: "daemon/started_service.proto",
 }

dns/client.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"net"
 	"net/netip"
+	"strings"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -13,6 +14,7 @@ import (
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
 	"github.com/sagernet/sing/common/task"
 	"github.com/sagernet/sing/contrab/freelru"
 	"github.com/sagernet/sing/contrab/maphash"
@@ -30,63 +32,59 @@ var (
 var _ adapter.DNSClient = (*Client)(nil)
 
 type Client struct {
-	ctx               context.Context
-	timeout           time.Duration
-	disableCache      bool
-	disableExpire     bool
-	optimisticTimeout time.Duration
-	cacheCapacity     uint32
-	clientSubnet      netip.Prefix
-	rdrc              adapter.RDRCStore
-	initRDRCFunc      func() adapter.RDRCStore
-	dnsCache          adapter.DNSCacheStore
-	initDNSCacheFunc  func() adapter.DNSCacheStore
-	logger            logger.ContextLogger
-	cache             freelru.Cache[dnsCacheKey, *dns.Msg]
-	cacheLock         compatible.Map[dnsCacheKey, chan struct{}]
-	backgroundRefresh compatible.Map[dnsCacheKey, struct{}]
+	timeout            time.Duration
+	disableCache       bool
+	disableExpire      bool
+	independentCache   bool
+	clientSubnet       netip.Prefix
+	rdrc               adapter.RDRCStore
+	initRDRCFunc       func() adapter.RDRCStore
+	logger             logger.ContextLogger
+	cache              freelru.Cache[dns.Question, *dns.Msg]
+	cacheLock          compatible.Map[dns.Question, chan struct{}]
+	transportCache     freelru.Cache[transportCacheKey, *dns.Msg]
+	transportCacheLock compatible.Map[dns.Question, chan struct{}]
 }
 
 type ClientOptions struct {
-	Context           context.Context
-	Timeout           time.Duration
-	DisableCache      bool
-	DisableExpire     bool
-	OptimisticTimeout time.Duration
-	CacheCapacity     uint32
-	ClientSubnet      netip.Prefix
-	RDRC              func() adapter.RDRCStore
-	DNSCache          func() adapter.DNSCacheStore
-	Logger            logger.ContextLogger
+	Timeout          time.Duration
+	DisableCache     bool
+	DisableExpire    bool
+	IndependentCache bool
+	CacheCapacity    uint32
+	ClientSubnet     netip.Prefix
+	RDRC             func() adapter.RDRCStore
+	Logger           logger.ContextLogger
 }
 
 func NewClient(options ClientOptions) *Client {
-	cacheCapacity := options.CacheCapacity
-	if cacheCapacity < 1024 {
-		cacheCapacity = 1024
-	}
 	client := &Client{
-		ctx:               options.Context,
-		timeout:           options.Timeout,
-		disableCache:      options.DisableCache,
-		disableExpire:     options.DisableExpire,
-		optimisticTimeout: options.OptimisticTimeout,
-		cacheCapacity:     cacheCapacity,
-		clientSubnet:      options.ClientSubnet,
-		initRDRCFunc:      options.RDRC,
-		initDNSCacheFunc:  options.DNSCache,
-		logger:            options.Logger,
+		timeout:          options.Timeout,
+		disableCache:     options.DisableCache,
+		disableExpire:    options.DisableExpire,
+		independentCache: options.IndependentCache,
+		clientSubnet:     options.ClientSubnet,
+		initRDRCFunc:     options.RDRC,
+		logger:           options.Logger,
 	}
 	if client.timeout == 0 {
 		client.timeout = C.DNSTimeout
 	}
-	if !client.disableCache && client.initDNSCacheFunc == nil {
-		client.initializeMemoryCache()
+	cacheCapacity := options.CacheCapacity
+	if cacheCapacity < 1024 {
+		cacheCapacity = 1024
+	}
+	if !client.disableCache {
+		if !client.independentCache {
+			client.cache = common.Must1(freelru.NewSharded[dns.Question, *dns.Msg](cacheCapacity, maphash.NewHasher[dns.Question]().Hash32))
+		} else {
+			client.transportCache = common.Must1(freelru.NewSharded[transportCacheKey, *dns.Msg](cacheCapacity, maphash.NewHasher[transportCacheKey]().Hash32))
+		}
 	}
 	return client
 }
 
-type dnsCacheKey struct {
+type transportCacheKey struct {
 	dns.Question
 	transportTag string
 }
@@ -95,19 +93,6 @@ func (c *Client) Start() {
 	if c.initRDRCFunc != nil {
 		c.rdrc = c.initRDRCFunc()
 	}
-	if c.initDNSCacheFunc != nil {
-		c.dnsCache = c.initDNSCacheFunc()
-	}
-	if c.dnsCache == nil {
-		c.initializeMemoryCache()
-	}
-}
-
-func (c *Client) initializeMemoryCache() {
-	if c.disableCache || c.cache != nil {
-		return
-	}
-	c.cache = common.Must1(freelru.NewSharded[dnsCacheKey, *dns.Msg](c.cacheCapacity, maphash.NewHasher[dnsCacheKey]().Hash32))
 }
 
 func extractNegativeTTL(response *dns.Msg) (uint32, bool) {
@@ -124,38 +109,7 @@ func extractNegativeTTL(response *dns.Msg) (uint32, bool) {
 	return 0, false
 }
 
-func computeTimeToLive(response *dns.Msg) uint32 {
-	var timeToLive uint32
-	if len(response.Answer) == 0 {
-		if soaTTL, hasSOA := extractNegativeTTL(response); hasSOA {
-			return soaTTL
-		}
-	}
-	for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
-		for _, record := range recordList {
-			if record.Header().Rrtype == dns.TypeOPT {
-				continue
-			}
-			if timeToLive == 0 || record.Header().Ttl > 0 && record.Header().Ttl < timeToLive {
-				timeToLive = record.Header().Ttl
-			}
-		}
-	}
-	return timeToLive
-}
-
-func normalizeTTL(response *dns.Msg, timeToLive uint32) {
-	for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
-		for _, record := range recordList {
-			if record.Header().Rrtype == dns.TypeOPT {
-				continue
-			}
-			record.Header().Ttl = timeToLive
-		}
-	}
-}
-
-func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, message *dns.Msg, options adapter.DNSQueryOptions, responseChecker func(response *dns.Msg) bool) (*dns.Msg, error) {
+func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, message *dns.Msg, options adapter.DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) (*dns.Msg, error) {
 	if len(message.Question) == 0 {
 		if c.logger != nil {
 			c.logger.WarnContext(ctx, "bad question size: ", len(message.Question))
@@ -169,7 +123,13 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 		}
 		return FixedResponseStatus(message, dns.RcodeSuccess), nil
 	}
-	message = c.prepareExchangeMessage(message, options)
+	clientSubnet := options.ClientSubnet
+	if !clientSubnet.IsValid() {
+		clientSubnet = c.clientSubnet
+	}
+	if clientSubnet.IsValid() {
+		message = SetClientSubnet(message, clientSubnet)
+	}
 
 	isSimpleRequest := len(message.Question) == 1 &&
 		len(message.Ns) == 0 &&
@@ -181,32 +141,40 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 		!options.ClientSubnet.IsValid()
 	disableCache := !isSimpleRequest || c.disableCache || options.DisableCache
 	if !disableCache {
-		cacheKey := dnsCacheKey{Question: question, transportTag: transport.Tag()}
-		cond, loaded := c.cacheLock.LoadOrStore(cacheKey, make(chan struct{}))
-		if loaded {
-			select {
-			case <-cond:
-			case <-ctx.Done():
-				return nil, ctx.Err()
+		if c.cache != nil {
+			cond, loaded := c.cacheLock.LoadOrStore(question, make(chan struct{}))
+			if loaded {
+				select {
+				case <-cond:
+				case <-ctx.Done():
+					return nil, ctx.Err()
+				}
+			} else {
+				defer func() {
+					c.cacheLock.Delete(question)
+					close(cond)
+				}()
+			}
+		} else if c.transportCache != nil {
+			cond, loaded := c.transportCacheLock.LoadOrStore(question, make(chan struct{}))
+			if loaded {
+				select {
+				case <-cond:
+				case <-ctx.Done():
+					return nil, ctx.Err()
+				}
+			} else {
+				defer func() {
+					c.transportCacheLock.Delete(question)
+					close(cond)
+				}()
 			}
-		} else {
-			defer func() {
-				c.cacheLock.Delete(cacheKey)
-				close(cond)
-			}()
 		}
-		response, ttl, isStale := c.loadResponse(question, transport)
+		response, ttl := c.loadResponse(question, transport)
 		if response != nil {
-			if isStale && !options.DisableOptimisticCache {
-				c.backgroundRefreshDNS(transport, question, message.Copy(), options, responseChecker)
-				logOptimisticResponse(c.logger, ctx, response)
-				response.Id = message.Id
-				return response, nil
-			} else if !isStale {
-				logCachedResponse(c.logger, ctx, response, ttl)
-				response.Id = message.Id
-				return response, nil
-			}
+			logCachedResponse(c.logger, ctx, response, ttl)
+			response.Id = message.Id
+			return response, nil
 		}
 	}
 
@@ -222,17 +190,62 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 			return nil, ErrResponseRejectedCached
 		}
 	}
-	response, err := c.exchangeToTransport(ctx, transport, message)
+	ctx, cancel := context.WithTimeout(ctx, c.timeout)
+	response, err := transport.Exchange(ctx, message)
+	cancel()
 	if err != nil {
-		return nil, err
+		var rcodeError RcodeError
+		if errors.As(err, &rcodeError) {
+			response = FixedResponseStatus(message, int(rcodeError))
+		} else {
+			return nil, err
+		}
 	}
+	/*if question.Qtype == dns.TypeA || question.Qtype == dns.TypeAAAA {
+		validResponse := response
+	loop:
+		for {
+			var (
+				addresses  int
+				queryCNAME string
+			)
+			for _, rawRR := range validResponse.Answer {
+				switch rr := rawRR.(type) {
+				case *dns.A:
+					break loop
+				case *dns.AAAA:
+					break loop
+				case *dns.CNAME:
+					queryCNAME = rr.Target
+				}
+			}
+			if queryCNAME == "" {
+				break
+			}
+			exMessage := *message
+			exMessage.Question = []dns.Question{{
+				Name:  queryCNAME,
+				Qtype: question.Qtype,
+			}}
+			validResponse, err = c.Exchange(ctx, transport, &exMessage, options, responseChecker)
+			if err != nil {
+				return nil, err
+			}
+		}
+		if validResponse != response {
+			response.Answer = append(response.Answer, validResponse.Answer...)
+		}
+	}*/
 	disableCache = disableCache || (response.Rcode != dns.RcodeSuccess && response.Rcode != dns.RcodeNameError)
 	if responseChecker != nil {
 		var rejected bool
+		// TODO: add accept_any rule and support to check response instead of addresses
 		if response.Rcode != dns.RcodeSuccess && response.Rcode != dns.RcodeNameError {
 			rejected = true
+		} else if len(response.Answer) == 0 {
+			rejected = !responseChecker(nil)
 		} else {
-			rejected = !responseChecker(response)
+			rejected = !responseChecker(MessageToAddresses(response))
 		}
 		if rejected {
 			if !disableCache && c.rdrc != nil {
@@ -242,7 +255,48 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 			return response, ErrResponseRejected
 		}
 	}
-	timeToLive := applyResponseOptions(question, response, options)
+	if question.Qtype == dns.TypeHTTPS {
+		if options.Strategy == C.DomainStrategyIPv4Only || options.Strategy == C.DomainStrategyIPv6Only {
+			for _, rr := range response.Answer {
+				https, isHTTPS := rr.(*dns.HTTPS)
+				if !isHTTPS {
+					continue
+				}
+				content := https.SVCB
+				content.Value = common.Filter(content.Value, func(it dns.SVCBKeyValue) bool {
+					if options.Strategy == C.DomainStrategyIPv4Only {
+						return it.Key() != dns.SVCB_IPV6HINT
+					} else {
+						return it.Key() != dns.SVCB_IPV4HINT
+					}
+				})
+				https.SVCB = content
+			}
+		}
+	}
+	var timeToLive uint32
+	if len(response.Answer) == 0 {
+		if soaTTL, hasSOA := extractNegativeTTL(response); hasSOA {
+			timeToLive = soaTTL
+		}
+	}
+	if timeToLive == 0 {
+		for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
+			for _, record := range recordList {
+				if timeToLive == 0 || record.Header().Ttl > 0 && record.Header().Ttl < timeToLive {
+					timeToLive = record.Header().Ttl
+				}
+			}
+		}
+	}
+	if options.RewriteTTL != nil {
+		timeToLive = *options.RewriteTTL
+	}
+	for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
+		for _, record := range recordList {
+			record.Header().Ttl = timeToLive
+		}
+	}
 	if !disableCache {
 		c.storeCache(transport, question, response, timeToLive)
 	}
@@ -261,7 +315,7 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 	return response, nil
 }
 
-func (c *Client) Lookup(ctx context.Context, transport adapter.DNSTransport, domain string, options adapter.DNSQueryOptions, responseChecker func(response *dns.Msg) bool) ([]netip.Addr, error) {
+func (c *Client) Lookup(ctx context.Context, transport adapter.DNSTransport, domain string, options adapter.DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) ([]netip.Addr, error) {
 	domain = FqdnToDomain(domain)
 	dnsName := dns.Fqdn(domain)
 	var strategy C.DomainStrategy
@@ -308,12 +362,8 @@ func (c *Client) Lookup(ctx context.Context, transport adapter.DNSTransport, dom
 func (c *Client) ClearCache() {
 	if c.cache != nil {
 		c.cache.Purge()
-	}
-	if c.dnsCache != nil {
-		err := c.dnsCache.ClearDNSCache()
-		if err != nil && c.logger != nil {
-			c.logger.Warn("clear DNS cache: ", err)
-		}
+	} else if c.transportCache != nil {
+		c.transportCache.Purge()
 	}
 }
 
@@ -329,44 +379,46 @@ func (c *Client) storeCache(transport adapter.DNSTransport, question dns.Questio
 	if timeToLive == 0 {
 		return
 	}
-	if c.dnsCache != nil {
-		packed, err := message.Pack()
-		if err == nil {
-			expireAt := time.Now().Add(time.Second * time.Duration(timeToLive))
-			c.dnsCache.SaveDNSCacheAsync(transport.Tag(), question.Name, question.Qtype, packed, expireAt, c.logger)
-		}
-		return
-	}
-	if c.cache == nil {
-		return
-	}
-	key := dnsCacheKey{Question: question, transportTag: transport.Tag()}
 	if c.disableExpire {
-		c.cache.Add(key, message.Copy())
+		if !c.independentCache {
+			c.cache.Add(question, message)
+		} else {
+			c.transportCache.Add(transportCacheKey{
+				Question:     question,
+				transportTag: transport.Tag(),
+			}, message)
+		}
 	} else {
-		c.cache.AddWithLifetime(key, message.Copy(), time.Second*time.Duration(timeToLive))
+		if !c.independentCache {
+			c.cache.AddWithLifetime(question, message, time.Second*time.Duration(timeToLive))
+		} else {
+			c.transportCache.AddWithLifetime(transportCacheKey{
+				Question:     question,
+				transportTag: transport.Tag(),
+			}, message, time.Second*time.Duration(timeToLive))
+		}
 	}
 }
 
-func (c *Client) lookupToExchange(ctx context.Context, transport adapter.DNSTransport, name string, qType uint16, options adapter.DNSQueryOptions, responseChecker func(response *dns.Msg) bool) ([]netip.Addr, error) {
+func (c *Client) lookupToExchange(ctx context.Context, transport adapter.DNSTransport, name string, qType uint16, options adapter.DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) ([]netip.Addr, error) {
 	question := dns.Question{
 		Name:   name,
 		Qtype:  qType,
 		Qclass: dns.ClassINET,
 	}
+	disableCache := c.disableCache || options.DisableCache
+	if !disableCache {
+		cachedAddresses, err := c.questionCache(question, transport)
+		if err != ErrNotCached {
+			return cachedAddresses, err
+		}
+	}
 	message := dns.Msg{
 		MsgHdr: dns.MsgHdr{
 			RecursionDesired: true,
 		},
 		Question: []dns.Question{question},
 	}
-	disableCache := c.disableCache || options.DisableCache
-	if !disableCache {
-		cachedAddresses, err := c.questionCache(ctx, transport, &message, options, responseChecker)
-		if err != ErrNotCached {
-			return cachedAddresses, err
-		}
-	}
 	response, err := c.Exchange(ctx, transport, &message, options, responseChecker)
 	if err != nil {
 		return nil, err
@@ -377,181 +429,111 @@ func (c *Client) lookupToExchange(ctx context.Context, transport adapter.DNSTran
 	return MessageToAddresses(response), nil
 }
 
-func (c *Client) questionCache(ctx context.Context, transport adapter.DNSTransport, message *dns.Msg, options adapter.DNSQueryOptions, responseChecker func(response *dns.Msg) bool) ([]netip.Addr, error) {
-	question := message.Question[0]
-	response, _, isStale := c.loadResponse(question, transport)
+func (c *Client) questionCache(question dns.Question, transport adapter.DNSTransport) ([]netip.Addr, error) {
+	response, _ := c.loadResponse(question, transport)
 	if response == nil {
 		return nil, ErrNotCached
 	}
-	if isStale {
-		if options.DisableOptimisticCache {
-			return nil, ErrNotCached
-		}
-		c.backgroundRefreshDNS(transport, question, c.prepareExchangeMessage(message.Copy(), options), options, responseChecker)
-		logOptimisticResponse(c.logger, ctx, response)
-	}
 	if response.Rcode != dns.RcodeSuccess {
 		return nil, RcodeError(response.Rcode)
 	}
 	return MessageToAddresses(response), nil
 }
 
-func (c *Client) loadResponse(question dns.Question, transport adapter.DNSTransport) (*dns.Msg, int, bool) {
-	if c.dnsCache != nil {
-		return c.loadPersistentResponse(question, transport)
-	}
-	if c.cache == nil {
-		return nil, 0, false
-	}
-	key := dnsCacheKey{Question: question, transportTag: transport.Tag()}
+func (c *Client) loadResponse(question dns.Question, transport adapter.DNSTransport) (*dns.Msg, int) {
+	var (
+		response *dns.Msg
+		loaded   bool
+	)
 	if c.disableExpire {
-		response, loaded := c.cache.Get(key)
-		if !loaded {
-			return nil, 0, false
-		}
-		return response.Copy(), 0, false
-	}
-	response, expireAt, loaded := c.cache.GetWithLifetimeNoExpire(key)
-	if !loaded {
-		return nil, 0, false
-	}
-	timeNow := time.Now()
-	if timeNow.After(expireAt) {
-		if c.optimisticTimeout > 0 && timeNow.Before(expireAt.Add(c.optimisticTimeout)) {
-			response = response.Copy()
-			normalizeTTL(response, 1)
-			return response, 0, true
-		}
-		c.cache.Remove(key)
-		return nil, 0, false
-	}
-	nowTTL := int(expireAt.Sub(timeNow).Seconds())
-	if nowTTL < 0 {
-		nowTTL = 0
-	}
-	response = response.Copy()
-	normalizeTTL(response, uint32(nowTTL))
-	return response, nowTTL, false
-}
-
-func (c *Client) loadPersistentResponse(question dns.Question, transport adapter.DNSTransport) (*dns.Msg, int, bool) {
-	rawMessage, expireAt, loaded := c.dnsCache.LoadDNSCache(transport.Tag(), question.Name, question.Qtype)
-	if !loaded {
-		return nil, 0, false
-	}
-	response := new(dns.Msg)
-	err := response.Unpack(rawMessage)
-	if err != nil {
-		return nil, 0, false
-	}
-	if c.disableExpire {
-		return response, 0, false
-	}
-	timeNow := time.Now()
-	if timeNow.After(expireAt) {
-		if c.optimisticTimeout > 0 && timeNow.Before(expireAt.Add(c.optimisticTimeout)) {
-			normalizeTTL(response, 1)
-			return response, 0, true
-		}
-		return nil, 0, false
-	}
-	nowTTL := int(expireAt.Sub(timeNow).Seconds())
-	if nowTTL < 0 {
-		nowTTL = 0
-	}
-	normalizeTTL(response, uint32(nowTTL))
-	return response, nowTTL, false
-}
-
-func applyResponseOptions(question dns.Question, response *dns.Msg, options adapter.DNSQueryOptions) uint32 {
-	if question.Qtype == dns.TypeHTTPS && (options.Strategy == C.DomainStrategyIPv4Only || options.Strategy == C.DomainStrategyIPv6Only) {
-		for _, rr := range response.Answer {
-			https, isHTTPS := rr.(*dns.HTTPS)
-			if !isHTTPS {
-				continue
-			}
-			content := https.SVCB
-			content.Value = common.Filter(content.Value, func(it dns.SVCBKeyValue) bool {
-				if options.Strategy == C.DomainStrategyIPv4Only {
-					return it.Key() != dns.SVCB_IPV6HINT
-				}
-				return it.Key() != dns.SVCB_IPV4HINT
+		if !c.independentCache {
+			response, loaded = c.cache.Get(question)
+		} else {
+			response, loaded = c.transportCache.Get(transportCacheKey{
+				Question:     question,
+				transportTag: transport.Tag(),
 			})
-			https.SVCB = content
 		}
-	}
-	timeToLive := computeTimeToLive(response)
-	if options.RewriteTTL != nil {
-		timeToLive = *options.RewriteTTL
-	}
-	normalizeTTL(response, timeToLive)
-	return timeToLive
-}
-
-func (c *Client) backgroundRefreshDNS(transport adapter.DNSTransport, question dns.Question, message *dns.Msg, options adapter.DNSQueryOptions, responseChecker func(response *dns.Msg) bool) {
-	key := dnsCacheKey{Question: question, transportTag: transport.Tag()}
-	_, loaded := c.backgroundRefresh.LoadOrStore(key, struct{}{})
-	if loaded {
-		return
-	}
-	go func() {
-		defer c.backgroundRefresh.Delete(key)
-		ctx := contextWithTransportTag(c.ctx, transport.Tag())
-		response, err := c.exchangeToTransport(ctx, transport, message)
-		if err != nil {
-			if c.logger != nil {
-				c.logger.Debug("optimistic refresh failed for ", FqdnToDomain(question.Name), ": ", err)
-			}
-			return
+		if !loaded {
+			return nil, 0
 		}
-		if responseChecker != nil {
-			var rejected bool
-			if response.Rcode != dns.RcodeSuccess && response.Rcode != dns.RcodeNameError {
-				rejected = true
+		return response.Copy(), 0
+	} else {
+		var expireAt time.Time
+		if !c.independentCache {
+			response, expireAt, loaded = c.cache.GetWithLifetime(question)
+		} else {
+			response, expireAt, loaded = c.transportCache.GetWithLifetime(transportCacheKey{
+				Question:     question,
+				transportTag: transport.Tag(),
+			})
+		}
+		if !loaded {
+			return nil, 0
+		}
+		timeNow := time.Now()
+		if timeNow.After(expireAt) {
+			if !c.independentCache {
+				c.cache.Remove(question)
 			} else {
-				rejected = !responseChecker(response)
+				c.transportCache.Remove(transportCacheKey{
+					Question:     question,
+					transportTag: transport.Tag(),
+				})
 			}
-			if rejected {
-				if c.rdrc != nil {
-					c.rdrc.SaveRDRCAsync(transport.Tag(), question.Name, question.Qtype, c.logger)
-				}
-				return
-			}
-		} else if response.Rcode != dns.RcodeSuccess && response.Rcode != dns.RcodeNameError {
-			return
+			return nil, 0
 		}
-		timeToLive := applyResponseOptions(question, response, options)
-		c.storeCache(transport, question, response, timeToLive)
-	}()
-}
-
-func (c *Client) prepareExchangeMessage(message *dns.Msg, options adapter.DNSQueryOptions) *dns.Msg {
-	clientSubnet := options.ClientSubnet
-	if !clientSubnet.IsValid() {
-		clientSubnet = c.clientSubnet
+		var originTTL int
+		for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
+			for _, record := range recordList {
+				if originTTL == 0 || record.Header().Ttl > 0 && int(record.Header().Ttl) < originTTL {
+					originTTL = int(record.Header().Ttl)
+				}
+			}
+		}
+		nowTTL := int(expireAt.Sub(timeNow).Seconds())
+		if nowTTL < 0 {
+			nowTTL = 0
+		}
+		response = response.Copy()
+		if originTTL > 0 {
+			duration := uint32(originTTL - nowTTL)
+			for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
+				for _, record := range recordList {
+					record.Header().Ttl = record.Header().Ttl - duration
+				}
+			}
+		} else {
+			for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
+				for _, record := range recordList {
+					record.Header().Ttl = uint32(nowTTL)
+				}
+			}
+		}
+		return response, nowTTL
 	}
-	if clientSubnet.IsValid() {
-		message = SetClientSubnet(message, clientSubnet)
-	}
-	return message
-}
-
-func (c *Client) exchangeToTransport(ctx context.Context, transport adapter.DNSTransport, message *dns.Msg) (*dns.Msg, error) {
-	ctx, cancel := context.WithTimeout(ctx, c.timeout)
-	defer cancel()
-	response, err := transport.Exchange(ctx, message)
-	if err == nil {
-		return response, nil
-	}
-	var rcodeError RcodeError
-	if errors.As(err, &rcodeError) {
-		return FixedResponseStatus(message, int(rcodeError)), nil
-	}
-	return nil, err
 }
 
 func MessageToAddresses(response *dns.Msg) []netip.Addr {
-	return adapter.DNSResponseAddresses(response)
+	if response == nil || response.Rcode != dns.RcodeSuccess {
+		return nil
+	}
+	addresses := make([]netip.Addr, 0, len(response.Answer))
+	for _, rawAnswer := range response.Answer {
+		switch answer := rawAnswer.(type) {
+		case *dns.A:
+			addresses = append(addresses, M.AddrFromIP(answer.A))
+		case *dns.AAAA:
+			addresses = append(addresses, M.AddrFromIP(answer.AAAA))
+		case *dns.HTTPS:
+			for _, value := range answer.SVCB.Value {
+				if value.Key() == dns.SVCB_IPV4HINT || value.Key() == dns.SVCB_IPV6HINT {
+					addresses = append(addresses, common.Map(strings.Split(value.String(), ","), M.ParseAddr)...)
+				}
+			}
+		}
+	}
+	return addresses
 }
 
 func wrapError(err error) error {

dns/client_log.go

@@ -22,19 +22,6 @@ func logCachedResponse(logger logger.ContextLogger, ctx context.Context, respons
 	}
 }
 
-func logOptimisticResponse(logger logger.ContextLogger, ctx context.Context, response *dns.Msg) {
-	if logger == nil || len(response.Question) == 0 {
-		return
-	}
-	domain := FqdnToDomain(response.Question[0].Name)
-	logger.DebugContext(ctx, "optimistic ", domain, " ", dns.RcodeToString[response.Rcode])
-	for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
-		for _, record := range recordList {
-			logger.InfoContext(ctx, "optimistic ", dns.Type(record.Header().Rrtype).String(), " ", FormatQuestion(record.String()))
-		}
-	}
-}
-
 func logExchangedResponse(logger logger.ContextLogger, ctx context.Context, response *dns.Msg, ttl uint32) {
 	if logger == nil || len(response.Question) == 0 {
 		return

dns/rcode.go

@@ -5,11 +5,10 @@ import (
 )
 
 const (
-	RcodeSuccess       RcodeError = mDNS.RcodeSuccess
-	RcodeServerFailure RcodeError = mDNS.RcodeServerFailure
-	RcodeFormatError   RcodeError = mDNS.RcodeFormatError
-	RcodeNameError     RcodeError = mDNS.RcodeNameError
-	RcodeRefused       RcodeError = mDNS.RcodeRefused
+	RcodeSuccess     RcodeError = mDNS.RcodeSuccess
+	RcodeFormatError RcodeError = mDNS.RcodeFormatError
+	RcodeNameError   RcodeError = mDNS.RcodeNameError
+	RcodeRefused     RcodeError = mDNS.RcodeRefused
 )
 
 type RcodeError int

dns/repro_test.go

@@ -1,111 +0,0 @@
-package dns
-
-import (
-	"context"
-	"net/netip"
-	"testing"
-
-	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/json/badoption"
-
-	mDNS "github.com/miekg/dns"
-	"github.com/stretchr/testify/require"
-)
-
-func TestReproLookupWithRulesUsesRequestStrategy(t *testing.T) {
-	t.Parallel()
-
-	defaultTransport := &fakeDNSTransport{tag: "default", transportType: C.DNSTypeUDP}
-	var qTypes []uint16
-	router := newTestRouter(t, nil, &fakeDNSTransportManager{
-		defaultTransport: defaultTransport,
-		transports: map[string]adapter.DNSTransport{
-			"default": defaultTransport,
-		},
-	}, &fakeDNSClient{
-		exchange: func(transport adapter.DNSTransport, message *mDNS.Msg) (*mDNS.Msg, error) {
-			qTypes = append(qTypes, message.Question[0].Qtype)
-			if message.Question[0].Qtype == mDNS.TypeA {
-				return FixedResponse(0, message.Question[0], []netip.Addr{netip.MustParseAddr("2.2.2.2")}, 60), nil
-			}
-			return FixedResponse(0, message.Question[0], []netip.Addr{netip.MustParseAddr("2001:db8::1")}, 60), nil
-		},
-	})
-
-	addresses, err := router.Lookup(context.Background(), "example.com", adapter.DNSQueryOptions{
-		Strategy: C.DomainStrategyIPv4Only,
-	})
-	require.NoError(t, err)
-	require.Equal(t, []uint16{mDNS.TypeA}, qTypes)
-	require.Equal(t, []netip.Addr{netip.MustParseAddr("2.2.2.2")}, addresses)
-}
-
-func TestReproLogicalMatchResponseIPCIDR(t *testing.T) {
-	t.Parallel()
-
-	transportManager := &fakeDNSTransportManager{
-		defaultTransport: &fakeDNSTransport{tag: "default", transportType: C.DNSTypeUDP},
-		transports: map[string]adapter.DNSTransport{
-			"upstream": &fakeDNSTransport{tag: "upstream", transportType: C.DNSTypeUDP},
-			"selected": &fakeDNSTransport{tag: "selected", transportType: C.DNSTypeUDP},
-			"default":  &fakeDNSTransport{tag: "default", transportType: C.DNSTypeUDP},
-		},
-	}
-	client := &fakeDNSClient{
-		exchange: func(transport adapter.DNSTransport, message *mDNS.Msg) (*mDNS.Msg, error) {
-			switch transport.Tag() {
-			case "upstream":
-				return FixedResponse(0, message.Question[0], []netip.Addr{netip.MustParseAddr("1.1.1.1")}, 60), nil
-			case "selected":
-				return FixedResponse(0, message.Question[0], []netip.Addr{netip.MustParseAddr("8.8.8.8")}, 60), nil
-			default:
-				return nil, E.New("unexpected transport")
-			}
-		},
-	}
-	rules := []option.DNSRule{
-		{
-			Type: C.RuleTypeDefault,
-			DefaultOptions: option.DefaultDNSRule{
-				RawDefaultDNSRule: option.RawDefaultDNSRule{
-					Domain: badoption.Listable[string]{"example.com"},
-				},
-				DNSRuleAction: option.DNSRuleAction{
-					Action:       C.RuleActionTypeEvaluate,
-					RouteOptions: option.DNSRouteActionOptions{Server: "upstream"},
-				},
-			},
-		},
-		{
-			Type: C.RuleTypeLogical,
-			LogicalOptions: option.LogicalDNSRule{
-				RawLogicalDNSRule: option.RawLogicalDNSRule{
-					Mode: C.LogicalTypeOr,
-					Rules: []option.DNSRule{{
-						Type: C.RuleTypeDefault,
-						DefaultOptions: option.DefaultDNSRule{
-							RawDefaultDNSRule: option.RawDefaultDNSRule{
-								MatchResponse: true,
-								IPCIDR:        badoption.Listable[string]{"1.1.1.0/24"},
-							},
-						},
-					}},
-				},
-				DNSRuleAction: option.DNSRuleAction{
-					Action:       C.RuleActionTypeRoute,
-					RouteOptions: option.DNSRouteActionOptions{Server: "selected"},
-				},
-			},
-		},
-	}
-	router := newTestRouter(t, rules, transportManager, client)
-
-	response, err := router.Exchange(context.Background(), &mDNS.Msg{
-		Question: []mDNS.Question{fixedQuestion("example.com", mDNS.TypeA)},
-	}, adapter.DNSQueryOptions{})
-	require.NoError(t, err)
-	require.Equal(t, []netip.Addr{netip.MustParseAddr("8.8.8.8")}, MessageToAddresses(response))
-}

dns/transport/connector.go

@@ -55,12 +55,6 @@ type contextKeyConnecting struct{}
 
 var errRecursiveConnectorDial = E.New("recursive connector dial")
 
-type connectorDialResult[T any] struct {
-	connection T
-	cancel     context.CancelFunc
-	err        error
-}
-
 func (c *Connector[T]) Get(ctx context.Context) (T, error) {
 	var zero T
 	for {
@@ -106,37 +100,41 @@ func (c *Connector[T]) Get(ctx context.Context) (T, error) {
 			return zero, err
 		}
 
-		connecting := make(chan struct{})
-		c.connecting = connecting
-		dialContext := context.WithValue(ctx, contextKeyConnecting{}, c)
-		dialResult := make(chan connectorDialResult[T], 1)
+		c.connecting = make(chan struct{})
 		c.access.Unlock()
 
-		go func() {
-			connection, cancel, err := c.dialWithCancellation(dialContext)
-			dialResult <- connectorDialResult[T]{
-				connection: connection,
-				cancel:     cancel,
-				err:        err,
-			}
-		}()
+		dialContext := context.WithValue(ctx, contextKeyConnecting{}, c)
+		connection, cancel, err := c.dialWithCancellation(dialContext)
 
-		select {
-		case result := <-dialResult:
-			return c.completeDial(ctx, connecting, result)
-		case <-ctx.Done():
-			go func() {
-				result := <-dialResult
-				_, _ = c.completeDial(ctx, connecting, result)
-			}()
-			return zero, ctx.Err()
-		case <-c.closeCtx.Done():
-			go func() {
-				result := <-dialResult
-				_, _ = c.completeDial(ctx, connecting, result)
-			}()
+		c.access.Lock()
+		close(c.connecting)
+		c.connecting = nil
+
+		if err != nil {
+			c.access.Unlock()
+			return zero, err
+		}
+
+		if c.closed {
+			cancel()
+			c.callbacks.Close(connection)
+			c.access.Unlock()
 			return zero, ErrTransportClosed
 		}
+		if err = ctx.Err(); err != nil {
+			cancel()
+			c.callbacks.Close(connection)
+			c.access.Unlock()
+			return zero, err
+		}
+
+		c.connection = connection
+		c.hasConnection = true
+		c.connectionCancel = cancel
+		result := c.connection
+		c.access.Unlock()
+
+		return result, nil
 	}
 }
 
@@ -145,38 +143,6 @@ func isRecursiveConnectorDial[T any](ctx context.Context, connector *Connector[T
 	return loaded && dialConnector == connector
 }
 
-func (c *Connector[T]) completeDial(ctx context.Context, connecting chan struct{}, result connectorDialResult[T]) (T, error) {
-	var zero T
-
-	c.access.Lock()
-	defer c.access.Unlock()
-	defer func() {
-		if c.connecting == connecting {
-			c.connecting = nil
-		}
-		close(connecting)
-	}()
-
-	if result.err != nil {
-		return zero, result.err
-	}
-	if c.closed || c.closeCtx.Err() != nil {
-		result.cancel()
-		c.callbacks.Close(result.connection)
-		return zero, ErrTransportClosed
-	}
-	if err := ctx.Err(); err != nil {
-		result.cancel()
-		c.callbacks.Close(result.connection)
-		return zero, err
-	}
-
-	c.connection = result.connection
-	c.hasConnection = true
-	c.connectionCancel = result.cancel
-	return c.connection, nil
-}
-
 func (c *Connector[T]) dialWithCancellation(ctx context.Context) (T, context.CancelFunc, error) {
 	var zero T
 	if err := ctx.Err(); err != nil {

dns/transport/connector_test.go

@@ -188,157 +188,13 @@ func TestConnectorCanceledRequestDoesNotCacheConnection(t *testing.T) {
 	err := <-result
 	require.ErrorIs(t, err, context.Canceled)
 	require.EqualValues(t, 1, dialCount.Load())
-	require.Eventually(t, func() bool {
-		return closeCount.Load() == 1
-	}, time.Second, 10*time.Millisecond)
+	require.EqualValues(t, 1, closeCount.Load())
 
 	_, err = connector.Get(context.Background())
 	require.NoError(t, err)
 	require.EqualValues(t, 2, dialCount.Load())
 }
 
-func TestConnectorCanceledRequestReturnsBeforeIgnoredDialCompletes(t *testing.T) {
-	t.Parallel()
-
-	var (
-		dialCount  atomic.Int32
-		closeCount atomic.Int32
-	)
-	dialStarted := make(chan struct{}, 1)
-	releaseDial := make(chan struct{})
-
-	connector := NewConnector(context.Background(), func(ctx context.Context) (*testConnectorConnection, error) {
-		dialCount.Add(1)
-		select {
-		case dialStarted <- struct{}{}:
-		default:
-		}
-		<-releaseDial
-		return &testConnectorConnection{}, nil
-	}, ConnectorCallbacks[*testConnectorConnection]{
-		IsClosed: func(connection *testConnectorConnection) bool {
-			return false
-		},
-		Close: func(connection *testConnectorConnection) {
-			closeCount.Add(1)
-		},
-		Reset: func(connection *testConnectorConnection) {},
-	})
-
-	requestContext, cancel := context.WithCancel(context.Background())
-	result := make(chan error, 1)
-	go func() {
-		_, err := connector.Get(requestContext)
-		result <- err
-	}()
-
-	<-dialStarted
-	cancel()
-
-	select {
-	case err := <-result:
-		require.ErrorIs(t, err, context.Canceled)
-	case <-time.After(time.Second):
-		t.Fatal("Get did not return after request cancel")
-	}
-
-	require.EqualValues(t, 1, dialCount.Load())
-	require.EqualValues(t, 0, closeCount.Load())
-
-	close(releaseDial)
-
-	require.Eventually(t, func() bool {
-		return closeCount.Load() == 1
-	}, time.Second, 10*time.Millisecond)
-
-	_, err := connector.Get(context.Background())
-	require.NoError(t, err)
-	require.EqualValues(t, 2, dialCount.Load())
-}
-
-func TestConnectorWaiterDoesNotStartNewDialBeforeCanceledDialCompletes(t *testing.T) {
-	t.Parallel()
-
-	var (
-		dialCount  atomic.Int32
-		closeCount atomic.Int32
-	)
-	firstDialStarted := make(chan struct{}, 1)
-	secondDialStarted := make(chan struct{}, 1)
-	releaseFirstDial := make(chan struct{})
-
-	connector := NewConnector(context.Background(), func(ctx context.Context) (*testConnectorConnection, error) {
-		attempt := dialCount.Add(1)
-		switch attempt {
-		case 1:
-			select {
-			case firstDialStarted <- struct{}{}:
-			default:
-			}
-			<-releaseFirstDial
-		case 2:
-			select {
-			case secondDialStarted <- struct{}{}:
-			default:
-			}
-		}
-		return &testConnectorConnection{}, nil
-	}, ConnectorCallbacks[*testConnectorConnection]{
-		IsClosed: func(connection *testConnectorConnection) bool {
-			return false
-		},
-		Close: func(connection *testConnectorConnection) {
-			closeCount.Add(1)
-		},
-		Reset: func(connection *testConnectorConnection) {},
-	})
-
-	requestContext, cancel := context.WithCancel(context.Background())
-	firstResult := make(chan error, 1)
-	go func() {
-		_, err := connector.Get(requestContext)
-		firstResult <- err
-	}()
-
-	<-firstDialStarted
-	cancel()
-
-	secondResult := make(chan error, 1)
-	go func() {
-		_, err := connector.Get(context.Background())
-		secondResult <- err
-	}()
-
-	select {
-	case <-secondDialStarted:
-		t.Fatal("second dial started before first dial completed")
-	case <-time.After(100 * time.Millisecond):
-	}
-
-	select {
-	case err := <-firstResult:
-		require.ErrorIs(t, err, context.Canceled)
-	case <-time.After(time.Second):
-		t.Fatal("first Get did not return after request cancel")
-	}
-
-	close(releaseFirstDial)
-
-	require.Eventually(t, func() bool {
-		return closeCount.Load() == 1
-	}, time.Second, 10*time.Millisecond)
-
-	select {
-	case <-secondDialStarted:
-	case <-time.After(time.Second):
-		t.Fatal("second dial did not start after first dial completed")
-	}
-
-	err := <-secondResult
-	require.NoError(t, err)
-	require.EqualValues(t, 2, dialCount.Load())
-}
-
 func TestConnectorDialContextNotCanceledByRequestContextAfterDial(t *testing.T) {
 	t.Parallel()
 

dns/transport/dhcp/dhcp_shared.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"syscall"
 
+	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/dns/transport"
 	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -39,6 +40,13 @@ func (t *Transport) exchangeParallel(ctx context.Context, servers []M.Socksaddr,
 	results := make(chan queryResult)
 	startRacer := func(ctx context.Context, fqdn string) {
 		response, err := t.tryOneName(ctx, servers, fqdn, message)
+		if err == nil {
+			if response.Rcode != mDNS.RcodeSuccess {
+				err = dns.RcodeError(response.Rcode)
+			} else if len(dns.MessageToAddresses(response)) == 0 {
+				err = dns.RcodeSuccess
+			}
+		}
 		select {
 		case results <- queryResult{response, err}:
 		case <-returned:

dns/transport/https.go

@@ -3,18 +3,17 @@ package transport
 import (
 	"bytes"
 	"context"
-	"encoding/base64"
 	"errors"
 	"io"
+	"net"
 	"net/http"
 	"net/url"
-	"strings"
+	"strconv"
 	"sync"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/dialer"
-	"github.com/sagernet/sing-box/common/httpclient"
 	"github.com/sagernet/sing-box/common/tls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
@@ -45,20 +44,14 @@ type HTTPSTransport struct {
 	logger           logger.ContextLogger
 	dialer           N.Dialer
 	destination      *url.URL
-	method           string
-	host             string
-	queryHeaders     http.Header
+	headers          http.Header
 	transportAccess  sync.Mutex
-	transport        *httpclient.Client
+	transport        *HTTPSTransportWrapper
 	transportResetAt time.Time
 }
 
 func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options option.RemoteHTTPSDNSServerOptions) (adapter.DNSTransport, error) {
-	remoteOptions := option.RemoteDNSServerOptions{
-		DNSServerAddressOptions: options.DNSServerAddressOptions,
-	}
-	remoteOptions.DialerOptions = options.DialerOptions
-	transportDialer, err := dns.NewRemoteDialer(ctx, remoteOptions)
+	transportDialer, err := dns.NewRemoteDialer(ctx, options.RemoteDNSServerOptions)
 	if err != nil {
 		return nil, err
 	}
@@ -69,21 +62,28 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 		return nil, err
 	}
 	if len(tlsConfig.NextProtos()) == 0 {
-		tlsConfig.SetNextProtos([]string{http2.NextProtoTLS})
-	} else if !common.Contains(tlsConfig.NextProtos(), http2.NextProtoTLS) {
-		tlsConfig.SetNextProtos(append([]string{http2.NextProtoTLS}, tlsConfig.NextProtos()...))
+		tlsConfig.SetNextProtos([]string{http2.NextProtoTLS, "http/1.1"})
 	}
 	headers := options.Headers.Build()
-	serverAddr := options.DNSServerAddressOptions.Build()
-	if serverAddr.Port == 0 {
-		serverAddr.Port = 443
-	}
-	if !serverAddr.IsValid() {
-		return nil, E.New("invalid server address: ", serverAddr)
+	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:   doHURLHost(serverAddr, 443),
+		Host:   host,
+	}
+	if destinationURL.Host == "" {
+		destinationURL.Host = options.Server
+	}
+	if options.ServerPort != 0 && options.ServerPort != 443 {
+		destinationURL.Host = net.JoinHostPort(destinationURL.Host, strconv.Itoa(int(options.ServerPort)))
 	}
 	path := options.Path
 	if path == "" {
@@ -93,67 +93,41 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	method := strings.ToUpper(options.Method)
-	if method == "" {
-		method = http.MethodPost
+	serverAddr := options.DNSServerAddressOptions.Build()
+	if serverAddr.Port == 0 {
+		serverAddr.Port = 443
 	}
-	switch method {
-	case http.MethodGet, http.MethodPost:
-	default:
-		return nil, E.New("unsupported HTTPS DNS method: ", options.Method)
+	if !serverAddr.IsValid() {
+		return nil, E.New("invalid server address: ", serverAddr)
 	}
-	httpClientOptions := options.HTTPClientOptions
-	return NewHTTPRaw(
-		dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeHTTPS, tag, remoteOptions),
+	return NewHTTPSRaw(
+		dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeHTTPS, tag, options.RemoteDNSServerOptions),
 		logger,
 		transportDialer,
 		&destinationURL,
 		headers,
+		serverAddr,
 		tlsConfig,
-		httpClientOptions,
-		method,
-	)
+	), nil
 }
 
-func NewHTTPRaw(
+func NewHTTPSRaw(
 	adapter dns.TransportAdapter,
-	logger logger.ContextLogger,
+	logger log.ContextLogger,
 	dialer N.Dialer,
 	destination *url.URL,
 	headers http.Header,
+	serverAddr M.Socksaddr,
 	tlsConfig tls.Config,
-	httpClientOptions option.HTTPClientOptions,
-	method string,
-) (*HTTPSTransport, error) {
-	if destination.Scheme == "https" && tlsConfig == nil {
-		return nil, E.New("TLS transport unavailable")
-	}
-	queryHeaders := headers.Clone()
-	if queryHeaders == nil {
-		queryHeaders = make(http.Header)
-	}
-	host := queryHeaders.Get("Host")
-	queryHeaders.Del("Host")
-	queryHeaders.Set("Accept", MimeType)
-	if method == http.MethodPost {
-		queryHeaders.Set("Content-Type", MimeType)
-	}
-	httpClientOptions.Tag = ""
-	httpClientOptions.Headers = nil
-	currentTransport, err := httpclient.NewClientWithDialer(dialer, tlsConfig, "", httpClientOptions)
-	if err != nil {
-		return nil, err
-	}
+) *HTTPSTransport {
 	return &HTTPSTransport{
 		TransportAdapter: adapter,
 		logger:           logger,
 		dialer:           dialer,
 		destination:      destination,
-		method:           method,
-		host:             host,
-		queryHeaders:     queryHeaders,
-		transport:        currentTransport,
-	}, nil
+		headers:          headers,
+		transport:        NewHTTPSTransportWrapper(tls.NewDialer(dialer, tlsConfig), serverAddr),
+	}
 }
 
 func (t *HTTPSTransport) Start(stage adapter.StartStage) error {
@@ -207,25 +181,14 @@ func (t *HTTPSTransport) exchange(ctx context.Context, message *mDNS.Msg) (*mDNS
 		requestBuffer.Release()
 		return nil, err
 	}
-	requestURL := *t.destination
-	var request *http.Request
-	switch t.method {
-	case http.MethodGet:
-		query := requestURL.Query()
-		query.Set("dns", base64.RawURLEncoding.EncodeToString(rawMessage))
-		requestURL.RawQuery = query.Encode()
-		request, err = http.NewRequestWithContext(ctx, http.MethodGet, requestURL.String(), nil)
-	default:
-		request, err = http.NewRequestWithContext(ctx, http.MethodPost, requestURL.String(), bytes.NewReader(rawMessage))
-	}
+	request, err := http.NewRequestWithContext(ctx, http.MethodPost, t.destination.String(), bytes.NewReader(rawMessage))
 	if err != nil {
 		requestBuffer.Release()
 		return nil, err
 	}
-	request.Header = t.queryHeaders.Clone()
-	if t.host != "" {
-		request.Host = t.host
-	}
+	request.Header = t.headers.Clone()
+	request.Header.Set("Content-Type", MimeType)
+	request.Header.Set("Accept", MimeType)
 	t.transportAccess.Lock()
 	currentTransport := t.transport
 	t.transportAccess.Unlock()
@@ -259,13 +222,3 @@ func (t *HTTPSTransport) exchange(ctx context.Context, message *mDNS.Msg) (*mDNS
 	}
 	return &responseMessage, nil
 }
-
-func doHURLHost(serverAddr M.Socksaddr, defaultPort uint16) string {
-	if serverAddr.Port != defaultPort {
-		return serverAddr.String()
-	}
-	if serverAddr.IsIPv6() {
-		return "[" + serverAddr.AddrString() + "]"
-	}
-	return serverAddr.AddrString()
-}

dns/transport/https_transport.go

@@ -0,0 +1,80 @@
+package transport
+
+import (
+	"context"
+	"errors"
+	"net"
+	"net/http"
+	"sync/atomic"
+
+	"github.com/sagernet/sing-box/common/tls"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+
+	"golang.org/x/net/http2"
+)
+
+var errFallback = E.New("fallback to HTTP/1.1")
+
+type HTTPSTransportWrapper struct {
+	http2Transport *http2.Transport
+	httpTransport  *http.Transport
+	fallback       *atomic.Bool
+}
+
+func NewHTTPSTransportWrapper(dialer tls.Dialer, serverAddr M.Socksaddr) *HTTPSTransportWrapper {
+	var fallback atomic.Bool
+	return &HTTPSTransportWrapper{
+		http2Transport: &http2.Transport{
+			DialTLSContext: func(ctx context.Context, _, _ string, _ *tls.STDConfig) (net.Conn, error) {
+				tlsConn, err := dialer.DialTLSContext(ctx, serverAddr)
+				if err != nil {
+					return nil, err
+				}
+				state := tlsConn.ConnectionState()
+				if state.NegotiatedProtocol == http2.NextProtoTLS {
+					return tlsConn, nil
+				}
+				tlsConn.Close()
+				fallback.Store(true)
+				return nil, errFallback
+			},
+		},
+		httpTransport: &http.Transport{
+			DialTLSContext: func(ctx context.Context, _, _ string) (net.Conn, error) {
+				return dialer.DialTLSContext(ctx, serverAddr)
+			},
+		},
+		fallback: &fallback,
+	}
+}
+
+func (h *HTTPSTransportWrapper) RoundTrip(request *http.Request) (*http.Response, error) {
+	if h.fallback.Load() {
+		return h.httpTransport.RoundTrip(request)
+	} else {
+		response, err := h.http2Transport.RoundTrip(request)
+		if err != nil {
+			if errors.Is(err, errFallback) {
+				return h.httpTransport.RoundTrip(request)
+			}
+			return nil, err
+		}
+		return response, nil
+	}
+}
+
+func (h *HTTPSTransportWrapper) CloseIdleConnections() {
+	h.http2Transport.CloseIdleConnections()
+	h.httpTransport.CloseIdleConnections()
+}
+
+func (h *HTTPSTransportWrapper) Clone() *HTTPSTransportWrapper {
+	return &HTTPSTransportWrapper{
+		httpTransport: h.httpTransport,
+		http2Transport: &http2.Transport{
+			DialTLSContext: h.http2Transport.DialTLSContext,
+		},
+		fallback: h.fallback,
+	}
+}

dns/transport/local/local_darwin.go

@@ -4,6 +4,8 @@ package local
 
 import (
 	"context"
+	"errors"
+	"net"
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
@@ -12,6 +14,7 @@ import (
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
@@ -32,8 +35,10 @@ type Transport struct {
 	logger        logger.ContextLogger
 	hosts         *hosts.File
 	dialer        N.Dialer
+	preferGo      bool
 	fallback      bool
 	dhcpTransport dhcpTransport
+	resolver      net.Resolver
 }
 
 type dhcpTransport interface {
@@ -47,12 +52,14 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 	if err != nil {
 		return nil, err
 	}
+	transportAdapter := dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options)
 	return &Transport{
-		TransportAdapter: dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options),
+		TransportAdapter: transportAdapter,
 		ctx:              ctx,
 		logger:           logger,
 		hosts:            hosts.NewFile(hosts.DefaultPath),
 		dialer:           transportDialer,
+		preferGo:         options.PreferGo,
 	}, nil
 }
 
@@ -90,3 +97,44 @@ func (t *Transport) Reset() {
 		t.dhcpTransport.Reset()
 	}
 }
+
+func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	question := message.Question[0]
+	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
+		addresses := t.hosts.Lookup(dns.FqdnToDomain(question.Name))
+		if len(addresses) > 0 {
+			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+		}
+	}
+	if !t.fallback {
+		return t.exchange(ctx, message, question.Name)
+	}
+	if t.dhcpTransport != nil {
+		dhcpTransports := t.dhcpTransport.Fetch()
+		if len(dhcpTransports) > 0 {
+			return t.dhcpTransport.Exchange0(ctx, message, dhcpTransports)
+		}
+	}
+	if t.preferGo {
+		// Assuming the user knows what they are doing, we still execute the query which will fail.
+		return t.exchange(ctx, message, 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 := t.resolver.LookupNetIP(ctx, network, question.Name)
+		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
+	}
+	return nil, E.New("only A and AAAA queries are supported on Apple platforms when using TUN and DHCP unavailable.")
+}

dns/transport/local/local_darwin_cgo.go

@@ -1,249 +0,0 @@
-//go:build darwin
-
-package local
-
-/*
-#include <stdlib.h>
-#include <dns.h>
-#include <resolv.h>
-
-static void *cgo_dns_open_super() {
-	return (void *)dns_open(NULL);
-}
-
-static void cgo_dns_close(void *opaque) {
-	if (opaque != NULL) dns_free((dns_handle_t)opaque);
-}
-
-static int cgo_dns_search(void *opaque, const char *name, int class, int type,
-	unsigned char *answer, int anslen) {
-	dns_handle_t handle = (dns_handle_t)opaque;
-	struct sockaddr_storage from;
-	uint32_t fromlen = sizeof(from);
-	return dns_search(handle, name, class, type, (char *)answer, anslen, (struct sockaddr *)&from, &fromlen);
-}
-
-static void *cgo_res_init() {
-	res_state state = calloc(1, sizeof(struct __res_state));
-	if (state == NULL) return NULL;
-	if (res_ninit(state) != 0) {
-		free(state);
-		return NULL;
-	}
-	return state;
-}
-
-static void cgo_res_destroy(void *opaque) {
-	res_state state = (res_state)opaque;
-	res_ndestroy(state);
-	free(state);
-}
-
-static int cgo_res_nsearch(void *opaque, const char *dname, int class, int type,
-	unsigned char *answer, int anslen,
-	int timeout_seconds,
-	int *out_h_errno) {
-	res_state state = (res_state)opaque;
-	state->retrans = timeout_seconds;
-	state->retry = 1;
-	int n = res_nsearch(state, dname, class, type, answer, anslen);
-	if (n < 0) {
-		*out_h_errno = state->res_h_errno;
-	}
-	return n;
-}
-*/
-import "C"
-
-import (
-	"context"
-	"errors"
-	"time"
-	"unsafe"
-
-	boxC "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/dns"
-	E "github.com/sagernet/sing/common/exceptions"
-
-	mDNS "github.com/miekg/dns"
-)
-
-const (
-	darwinResolverHostNotFound = 1
-	darwinResolverTryAgain     = 2
-	darwinResolverNoRecovery   = 3
-	darwinResolverNoData       = 4
-
-	darwinResolverMaxPacketSize = 65535
-)
-
-var errDarwinNeedLargerBuffer = errors.New("darwin resolver response truncated")
-
-func darwinLookupSystemDNS(name string, class, qtype, timeoutSeconds int) (*mDNS.Msg, error) {
-	response, err := darwinSearchWithSystemRouting(name, class, qtype)
-	if err == nil {
-		return response, nil
-	}
-	fallbackResponse, fallbackErr := darwinSearchWithResolv(name, class, qtype, timeoutSeconds)
-	if fallbackErr == nil || fallbackResponse != nil {
-		return fallbackResponse, fallbackErr
-	}
-	return nil, E.Errors(
-		E.Cause(err, "dns_search"),
-		E.Cause(fallbackErr, "res_nsearch"),
-	)
-}
-
-func darwinSearchWithSystemRouting(name string, class, qtype int) (*mDNS.Msg, error) {
-	handle := C.cgo_dns_open_super()
-	if handle == nil {
-		return nil, E.New("dns_open failed")
-	}
-	defer C.cgo_dns_close(handle)
-
-	cName := C.CString(name)
-	defer C.free(unsafe.Pointer(cName))
-
-	bufSize := 1232
-	for {
-		answer := make([]byte, bufSize)
-		n := C.cgo_dns_search(handle, cName, C.int(class), C.int(qtype),
-			(*C.uchar)(unsafe.Pointer(&answer[0])), C.int(len(answer)))
-		if n <= 0 {
-			return nil, E.New("dns_search failed for ", name)
-		}
-		if int(n) > bufSize {
-			bufSize = int(n)
-			continue
-		}
-		return unpackDarwinResolverMessage(answer[:int(n)], "dns_search")
-	}
-}
-
-func darwinSearchWithResolv(name string, class, qtype int, timeoutSeconds int) (*mDNS.Msg, error) {
-	state := C.cgo_res_init()
-	if state == nil {
-		return nil, E.New("res_ninit failed")
-	}
-	defer C.cgo_res_destroy(state)
-
-	cName := C.CString(name)
-	defer C.free(unsafe.Pointer(cName))
-
-	bufSize := 1232
-	for {
-		answer := make([]byte, bufSize)
-		var hErrno C.int
-		n := C.cgo_res_nsearch(state, cName, C.int(class), C.int(qtype),
-			(*C.uchar)(unsafe.Pointer(&answer[0])), C.int(len(answer)),
-			C.int(timeoutSeconds),
-			&hErrno)
-		if n >= 0 {
-			if int(n) > bufSize {
-				bufSize = int(n)
-				continue
-			}
-			return unpackDarwinResolverMessage(answer[:int(n)], "res_nsearch")
-		}
-		response, err := handleDarwinResolvFailure(name, answer, int(hErrno))
-		if err == nil {
-			return response, nil
-		}
-		if errors.Is(err, errDarwinNeedLargerBuffer) && bufSize < darwinResolverMaxPacketSize {
-			bufSize *= 2
-			if bufSize > darwinResolverMaxPacketSize {
-				bufSize = darwinResolverMaxPacketSize
-			}
-			continue
-		}
-		return nil, err
-	}
-}
-
-func unpackDarwinResolverMessage(packet []byte, source string) (*mDNS.Msg, error) {
-	var response mDNS.Msg
-	err := response.Unpack(packet)
-	if err != nil {
-		return nil, E.Cause(err, "unpack ", source, " response")
-	}
-	return &response, nil
-}
-
-func handleDarwinResolvFailure(name string, answer []byte, hErrno int) (*mDNS.Msg, error) {
-	response, err := unpackDarwinResolverMessage(answer, "res_nsearch failure")
-	if err == nil && response.Response {
-		if response.Truncated && len(answer) < darwinResolverMaxPacketSize {
-			return nil, errDarwinNeedLargerBuffer
-		}
-		return response, nil
-	}
-	return nil, darwinResolverHErrno(name, hErrno)
-}
-
-func darwinResolverHErrno(name string, hErrno int) error {
-	switch hErrno {
-	case darwinResolverHostNotFound:
-		return dns.RcodeNameError
-	case darwinResolverTryAgain:
-		return dns.RcodeServerFailure
-	case darwinResolverNoRecovery:
-		return dns.RcodeServerFailure
-	case darwinResolverNoData:
-		return dns.RcodeSuccess
-	default:
-		return E.New("res_nsearch: unknown error ", hErrno, " for ", name)
-	}
-}
-
-func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	question := message.Question[0]
-	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		addresses := t.hosts.Lookup(dns.FqdnToDomain(question.Name))
-		if len(addresses) > 0 {
-			return dns.FixedResponse(message.Id, question, addresses, boxC.DefaultDNSTTL), nil
-		}
-	}
-	if t.fallback && t.dhcpTransport != nil {
-		dhcpServers := t.dhcpTransport.Fetch()
-		if len(dhcpServers) > 0 {
-			return t.dhcpTransport.Exchange0(ctx, message, dhcpServers)
-		}
-	}
-	name := question.Name
-	timeoutSeconds := int(boxC.DNSTimeout / time.Second)
-	if deadline, hasDeadline := ctx.Deadline(); hasDeadline {
-		remaining := time.Until(deadline)
-		if remaining <= 0 {
-			return nil, context.DeadlineExceeded
-		}
-		seconds := int(remaining.Seconds())
-		if seconds < 1 {
-			seconds = 1
-		}
-		timeoutSeconds = seconds
-	}
-	type resolvResult struct {
-		response *mDNS.Msg
-		err      error
-	}
-	resultCh := make(chan resolvResult, 1)
-	go func() {
-		response, err := darwinLookupSystemDNS(name, int(question.Qclass), int(question.Qtype), timeoutSeconds)
-		resultCh <- resolvResult{response, err}
-	}()
-	var result resolvResult
-	select {
-	case <-ctx.Done():
-		return nil, ctx.Err()
-	case result = <-resultCh:
-	}
-	if result.err != nil {
-		var rcodeError dns.RcodeError
-		if errors.As(result.err, &rcodeError) {
-			return dns.FixedResponseStatus(message, int(rcodeError)), nil
-		}
-		return nil, result.err
-	}
-	result.response.Id = message.Id
-	return result.response, nil
-}

dns/transport/local/local_shared.go

@@ -1,5 +1,3 @@
-//go:build !darwin
-
 package local
 
 import (
@@ -9,6 +7,7 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/dns/transport"
 	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -50,6 +49,13 @@ 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 {
+			if response.Rcode != mDNS.RcodeSuccess {
+				err = dns.RcodeError(response.Rcode)
+			} else if len(dns.MessageToAddresses(response)) == 0 {
+				err = E.New(fqdn, ": empty result")
+			}
+		}
 		select {
 		case results <- queryResult{response, err}:
 		case <-returned:

dns/transport/quic/http3.go

@@ -9,7 +9,6 @@ import (
 	"net/url"
 	"strconv"
 	"sync"
-	"time"
 
 	"github.com/sagernet/quic-go"
 	"github.com/sagernet/quic-go/http3"
@@ -41,23 +40,18 @@ func RegisterHTTP3Transport(registry *dns.TransportRegistry) {
 
 type HTTP3Transport struct {
 	dns.TransportAdapter
-	logger           logger.ContextLogger
-	dialer           N.Dialer
-	destination      *url.URL
-	headers          http.Header
-	handshakeTimeout time.Duration
-	serverAddr       M.Socksaddr
-	tlsConfig        *tls.STDConfig
-	transportAccess  sync.Mutex
-	transport        *http3.Transport
+	logger          logger.ContextLogger
+	dialer          N.Dialer
+	destination     *url.URL
+	headers         http.Header
+	serverAddr      M.Socksaddr
+	tlsConfig       *tls.STDConfig
+	transportAccess sync.Mutex
+	transport       *http3.Transport
 }
 
 func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options option.RemoteHTTPSDNSServerOptions) (adapter.DNSTransport, error) {
-	remoteOptions := option.RemoteDNSServerOptions{
-		DNSServerAddressOptions: options.DNSServerAddressOptions,
-	}
-	remoteOptions.DialerOptions = options.DialerOptions
-	transportDialer, err := dns.NewRemoteDialer(ctx, remoteOptions)
+	transportDialer, err := dns.NewRemoteDialer(ctx, options.RemoteDNSServerOptions)
 	if err != nil {
 		return nil, err
 	}
@@ -67,7 +61,6 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	handshakeTimeout := tlsConfig.HandshakeTimeout()
 	stdConfig, err := tlsConfig.STDConfig()
 	if err != nil {
 		return nil, err
@@ -109,12 +102,11 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 		return nil, E.New("invalid server address: ", serverAddr)
 	}
 	t := &HTTP3Transport{
-		TransportAdapter: dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeHTTP3, tag, remoteOptions),
+		TransportAdapter: dns.NewTransportAdapterWithRemoteOptions(C.DNSTypeHTTP3, tag, options.RemoteDNSServerOptions),
 		logger:           logger,
 		dialer:           transportDialer,
 		destination:      &destinationURL,
 		headers:          headers,
-		handshakeTimeout: handshakeTimeout,
 		serverAddr:       serverAddr,
 		tlsConfig:        stdConfig,
 	}
@@ -123,17 +115,8 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 }
 
 func (t *HTTP3Transport) newTransport() *http3.Transport {
-	quicConfig := &quic.Config{}
-	if t.handshakeTimeout > 0 {
-		quicConfig.HandshakeIdleTimeout = t.handshakeTimeout
-	}
 	return &http3.Transport{
-		QUICConfig: quicConfig,
 		Dial: func(ctx context.Context, addr string, tlsCfg *tls.STDConfig, cfg *quic.Config) (*quic.Conn, error) {
-			if t.handshakeTimeout > 0 && cfg.HandshakeIdleTimeout == 0 {
-				cfg = cfg.Clone()
-				cfg.HandshakeIdleTimeout = t.handshakeTimeout
-			}
 			conn, dialErr := t.dialer.DialContext(ctx, N.NetworkUDP, t.serverAddr)
 			if dialErr != nil {
 				return nil, dialErr

dns/transport_adapter.go

@@ -1,13 +1,21 @@
 package dns
 
 import (
+	"net/netip"
+
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
 )
 
+var _ adapter.LegacyDNSTransport = (*TransportAdapter)(nil)
+
 type TransportAdapter struct {
 	transportType string
 	transportTag  string
 	dependencies  []string
+	strategy      C.DomainStrategy
+	clientSubnet  netip.Prefix
 }
 
 func NewTransportAdapter(transportType string, transportTag string, dependencies []string) TransportAdapter {
@@ -27,6 +35,8 @@ func NewTransportAdapterWithLocalOptions(transportType string, transportTag stri
 		transportType: transportType,
 		transportTag:  transportTag,
 		dependencies:  dependencies,
+		strategy:      C.DomainStrategy(localOptions.LegacyStrategy),
+		clientSubnet:  localOptions.LegacyClientSubnet,
 	}
 }
 
@@ -35,10 +45,15 @@ func NewTransportAdapterWithRemoteOptions(transportType string, transportTag str
 	if remoteOptions.DomainResolver != nil && remoteOptions.DomainResolver.Server != "" {
 		dependencies = append(dependencies, remoteOptions.DomainResolver.Server)
 	}
+	if remoteOptions.LegacyAddressResolver != "" {
+		dependencies = append(dependencies, remoteOptions.LegacyAddressResolver)
+	}
 	return TransportAdapter{
 		transportType: transportType,
 		transportTag:  transportTag,
 		dependencies:  dependencies,
+		strategy:      C.DomainStrategy(remoteOptions.LegacyStrategy),
+		clientSubnet:  remoteOptions.LegacyClientSubnet,
 	}
 }
 
@@ -53,3 +68,11 @@ func (a *TransportAdapter) Tag() string {
 func (a *TransportAdapter) Dependencies() []string {
 	return a.dependencies
 }
+
+func (a *TransportAdapter) LegacyStrategy() C.DomainStrategy {
+	return a.strategy
+}
+
+func (a *TransportAdapter) LegacyClientSubnet() netip.Prefix {
+	return a.clientSubnet
+}

dns/transport_dialer.go

@@ -2,25 +2,104 @@ package dns
 
 import (
 	"context"
+	"net"
+	"time"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/dialer"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
 )
 
 func NewLocalDialer(ctx context.Context, options option.LocalDNSServerOptions) (N.Dialer, error) {
-	return dialer.NewWithOptions(dialer.Options{
-		Context:        ctx,
-		Options:        options.DialerOptions,
-		DirectResolver: true,
-	})
+	if options.LegacyDefaultDialer {
+		return dialer.NewDefaultOutbound(ctx), nil
+	} else {
+		return dialer.NewWithOptions(dialer.Options{
+			Context:         ctx,
+			Options:         options.DialerOptions,
+			DirectResolver:  true,
+			LegacyDNSDialer: options.Legacy,
+		})
+	}
 }
 
 func NewRemoteDialer(ctx context.Context, options option.RemoteDNSServerOptions) (N.Dialer, error) {
-	return dialer.NewWithOptions(dialer.Options{
-		Context:        ctx,
-		Options:        options.DialerOptions,
-		RemoteIsDomain: options.ServerIsDomain(),
-		DirectResolver: true,
-	})
+	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
+	} else {
+		return dialer.NewWithOptions(dialer.Options{
+			Context:         ctx,
+			Options:         options.DialerOptions,
+			RemoteIsDomain:  options.ServerIsDomain(),
+			DirectResolver:  true,
+			LegacyDNSDialer: options.Legacy,
+		})
+	}
+}
+
+type legacyTransportDialer struct {
+	dialer        N.Dialer
+	dnsRouter     adapter.DNSRouter
+	transport     adapter.DNSTransport
+	strategy      C.DomainStrategy
+	fallbackDelay time.Duration
+}
+
+func newTransportDialer(dialer N.Dialer, dnsRouter adapter.DNSRouter, transport adapter.DNSTransport, strategy C.DomainStrategy, fallbackDelay time.Duration) *legacyTransportDialer {
+	return &legacyTransportDialer{
+		dialer,
+		dnsRouter,
+		transport,
+		strategy,
+		fallbackDelay,
+	}
+}
+
+func (d *legacyTransportDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	if destination.IsIP() {
+		return d.dialer.DialContext(ctx, network, destination)
+	}
+	addresses, err := d.dnsRouter.Lookup(ctx, destination.Fqdn, adapter.DNSQueryOptions{
+		Transport: d.transport,
+		Strategy:  d.strategy,
+	})
+	if err != nil {
+		return nil, err
+	}
+	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) {
+	if destination.IsIP() {
+		return d.dialer.ListenPacket(ctx, destination)
+	}
+	addresses, err := d.dnsRouter.Lookup(ctx, destination.Fqdn, adapter.DNSQueryOptions{
+		Transport: d.transport,
+		Strategy:  d.strategy,
+	})
+	if err != nil {
+		return nil, err
+	}
+	conn, _, err := N.ListenSerial(ctx, d.dialer, destination, addresses)
+	return conn, err
+}
+
+func (d *legacyTransportDialer) Upstream() any {
+	return d.dialer
 }