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Add multi network dialing

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世界 2024-11-12 19:37:10 +08:00
parent b973eca28c
commit f274186752
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GPG key ID: CD109927C34A63C4
24 changed files with 988 additions and 335 deletions
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4
adapter/inbound.go
View file

@ -3,8 +3,10 @@ package adapter
import (
"context"
"net/netip"
"time"
"github.com/sagernet/sing-box/common/process"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
M "github.com/sagernet/sing/common/metadata"
@ -66,6 +68,8 @@ type InboundContext struct {
InboundOptions option.InboundOptions
UDPDisableDomainUnmapping bool
UDPConnect bool
NetworkStrategy C.NetworkStrategy
FallbackDelay time.Duration
DNSServer string

14
adapter/network.go
View file

@ -1,6 +1,9 @@
package adapter
import (
"time"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-tun"
"github.com/sagernet/sing/common/control"
)
@ -11,10 +14,10 @@ type NetworkManager interface {
UpdateInterfaces() error
DefaultNetworkInterface() *NetworkInterface
NetworkInterfaces() []NetworkInterface
DefaultInterface() string
AutoDetectInterface() bool
AutoDetectInterfaceFunc() control.Func
DefaultMark() uint32
ProtectFunc() control.Func
DefaultOptions() NetworkOptions
RegisterAutoRedirectOutputMark(mark uint32) error
AutoRedirectOutputMark() uint32
NetworkMonitor() tun.NetworkUpdateMonitor
@ -24,6 +27,13 @@ type NetworkManager interface {
ResetNetwork()
}
type NetworkOptions struct {
DefaultNetworkStrategy C.NetworkStrategy
DefaultFallbackDelay time.Duration
DefaultInterface string
DefaultMark uint32
}
type InterfaceUpdateListener interface {
InterfaceUpdated()
}

108
adapter/outbound/default.go
View file

@ -8,8 +8,8 @@ import (
"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-dns"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/bufio"
@ -25,35 +25,11 @@ func NewConnection(ctx context.Context, this N.Dialer, conn net.Conn, metadata a
var outConn net.Conn
var err error
if len(metadata.DestinationAddresses) > 0 {
outConn, err = N.DialSerial(ctx, this, N.NetworkTCP, metadata.Destination, metadata.DestinationAddresses)
if parallelDialer, isParallelDialer := this.(dialer.ParallelInterfaceDialer); isParallelDialer {
outConn, err = dialer.DialSerialNetwork(ctx, parallelDialer, N.NetworkTCP, metadata.Destination, metadata.DestinationAddresses, metadata.NetworkStrategy, metadata.FallbackDelay)
} else {
outConn, err = this.DialContext(ctx, N.NetworkTCP, metadata.Destination)
}
if err != nil {
return N.ReportHandshakeFailure(conn, err)
}
err = N.ReportConnHandshakeSuccess(conn, outConn)
if err != nil {
outConn.Close()
return err
}
return CopyEarlyConn(ctx, conn, outConn)
}
func NewDirectConnection(ctx context.Context, router adapter.Router, this N.Dialer, conn net.Conn, metadata adapter.InboundContext, domainStrategy dns.DomainStrategy) error {
defer conn.Close()
ctx = adapter.WithContext(ctx, &metadata)
var outConn net.Conn
var err error
if len(metadata.DestinationAddresses) > 0 {
outConn, err = N.DialSerial(ctx, this, N.NetworkTCP, metadata.Destination, metadata.DestinationAddresses)
} else if metadata.Destination.IsFqdn() {
var destinationAddresses []netip.Addr
destinationAddresses, err = router.Lookup(ctx, metadata.Destination.Fqdn, domainStrategy)
if err != nil {
return N.ReportHandshakeFailure(conn, err)
}
outConn, err = N.DialSerial(ctx, this, N.NetworkTCP, metadata.Destination, destinationAddresses)
} else {
outConn, err = this.DialContext(ctx, N.NetworkTCP, metadata.Destination)
}
@ -79,7 +55,11 @@ func NewPacketConnection(ctx context.Context, this N.Dialer, conn N.PacketConn,
)
if metadata.UDPConnect {
if len(metadata.DestinationAddresses) > 0 {
if parallelDialer, isParallelDialer := this.(dialer.ParallelInterfaceDialer); isParallelDialer {
outConn, err = dialer.DialSerialNetwork(ctx, parallelDialer, N.NetworkUDP, metadata.Destination, metadata.DestinationAddresses, metadata.NetworkStrategy, metadata.FallbackDelay)
} else {
outConn, err = N.DialSerial(ctx, this, N.NetworkUDP, metadata.Destination, metadata.DestinationAddresses)
}
} else {
outConn, err = this.DialContext(ctx, N.NetworkUDP, metadata.Destination)
}
@ -93,7 +73,11 @@ func NewPacketConnection(ctx context.Context, this N.Dialer, conn N.PacketConn,
}
} else {
if len(metadata.DestinationAddresses) > 0 {
if parallelDialer, isParallelDialer := this.(dialer.ParallelInterfaceDialer); isParallelDialer {
outPacketConn, destinationAddress, err = dialer.ListenSerialNetworkPacket(ctx, parallelDialer, metadata.Destination, metadata.DestinationAddresses, metadata.NetworkStrategy, metadata.FallbackDelay)
} else {
outPacketConn, destinationAddress, err = N.ListenSerial(ctx, this, metadata.Destination, metadata.DestinationAddresses)
}
} else {
outPacketConn, err = this.ListenPacket(ctx, metadata.Destination)
}
@ -129,76 +113,6 @@ func NewPacketConnection(ctx context.Context, this N.Dialer, conn N.PacketConn,
return bufio.CopyPacketConn(ctx, conn, bufio.NewPacketConn(outPacketConn))
}
func NewDirectPacketConnection(ctx context.Context, router adapter.Router, this N.Dialer, conn N.PacketConn, metadata adapter.InboundContext, domainStrategy dns.DomainStrategy) error {
defer conn.Close()
ctx = adapter.WithContext(ctx, &metadata)
var (
outPacketConn net.PacketConn
outConn net.Conn
destinationAddress netip.Addr
err error
)
if metadata.UDPConnect {
if len(metadata.DestinationAddresses) > 0 {
outConn, err = N.DialSerial(ctx, this, N.NetworkUDP, metadata.Destination, metadata.DestinationAddresses)
} else if metadata.Destination.IsFqdn() {
var destinationAddresses []netip.Addr
destinationAddresses, err = router.Lookup(ctx, metadata.Destination.Fqdn, domainStrategy)
if err != nil {
return N.ReportHandshakeFailure(conn, err)
}
outConn, err = N.DialSerial(ctx, this, N.NetworkUDP, metadata.Destination, destinationAddresses)
} else {
outConn, err = this.DialContext(ctx, N.NetworkUDP, metadata.Destination)
}
if err != nil {
return N.ReportHandshakeFailure(conn, err)
}
connRemoteAddr := M.AddrFromNet(outConn.RemoteAddr())
if connRemoteAddr != metadata.Destination.Addr {
destinationAddress = connRemoteAddr
}
} else {
if len(metadata.DestinationAddresses) > 0 {
outPacketConn, destinationAddress, err = N.ListenSerial(ctx, this, metadata.Destination, metadata.DestinationAddresses)
} else if metadata.Destination.IsFqdn() {
var destinationAddresses []netip.Addr
destinationAddresses, err = router.Lookup(ctx, metadata.Destination.Fqdn, domainStrategy)
if err != nil {
return N.ReportHandshakeFailure(conn, err)
}
outPacketConn, destinationAddress, err = N.ListenSerial(ctx, this, metadata.Destination, destinationAddresses)
} else {
outPacketConn, err = this.ListenPacket(ctx, metadata.Destination)
}
if err != nil {
return N.ReportHandshakeFailure(conn, err)
}
}
err = N.ReportPacketConnHandshakeSuccess(conn, outPacketConn)
if err != nil {
outPacketConn.Close()
return err
}
if destinationAddress.IsValid() {
if metadata.Destination.IsFqdn() {
outPacketConn = bufio.NewNATPacketConn(bufio.NewPacketConn(outPacketConn), M.SocksaddrFrom(destinationAddress, metadata.Destination.Port), metadata.Destination)
}
if natConn, loaded := common.Cast[bufio.NATPacketConn](conn); loaded {
natConn.UpdateDestination(destinationAddress)
}
}
switch metadata.Protocol {
case C.ProtocolSTUN:
ctx, conn = canceler.NewPacketConn(ctx, conn, C.STUNTimeout)
case C.ProtocolQUIC:
ctx, conn = canceler.NewPacketConn(ctx, conn, C.QUICTimeout)
case C.ProtocolDNS:
ctx, conn = canceler.NewPacketConn(ctx, conn, C.DNSTimeout)
}
return bufio.CopyPacketConn(ctx, conn, bufio.NewPacketConn(outPacketConn))
}
func CopyEarlyConn(ctx context.Context, conn net.Conn, serverConn net.Conn) error {
if cachedReader, isCached := conn.(N.CachedReader); isCached {
payload := cachedReader.ReadCached()

160
common/dialer/default.go
View file

@ -10,13 +10,17 @@ import (
"github.com/sagernet/sing-box/common/conntrack"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing/common/atomic"
"github.com/sagernet/sing/common/control"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
var _ WireGuardListener = (*DefaultDialer)(nil)
var (
_ ParallelInterfaceDialer = (*DefaultDialer)(nil)
_ WireGuardListener = (*DefaultDialer)(nil)
)
type DefaultDialer struct {
dialer4 tcpDialer
@ -27,49 +31,72 @@ type DefaultDialer struct {
udpAddr4 string
udpAddr6 string
isWireGuardListener bool
networkManager adapter.NetworkManager
networkStrategy C.NetworkStrategy
networkFallbackDelay time.Duration
networkLastFallback atomic.TypedValue[time.Time]
}
func NewDefault(networkManager adapter.NetworkManager, options option.DialerOptions) (*DefaultDialer, error) {
var dialer net.Dialer
var listener net.ListenConfig
if options.BindInterface != "" {
var interfaceFinder control.InterfaceFinder
var (
dialer net.Dialer
listener net.ListenConfig
interfaceFinder control.InterfaceFinder
networkStrategy C.NetworkStrategy
networkFallbackDelay time.Duration
)
if networkManager != nil {
interfaceFinder = networkManager.InterfaceFinder()
} else {
interfaceFinder = control.NewDefaultInterfaceFinder()
}
if options.BindInterface != "" {
bindFunc := control.BindToInterface(interfaceFinder, options.BindInterface, -1)
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
} else if networkManager != nil && networkManager.AutoDetectInterface() {
bindFunc := networkManager.AutoDetectInterfaceFunc()
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
} else if networkManager != nil && networkManager.DefaultInterface() != "" {
bindFunc := control.BindToInterface(networkManager.InterfaceFinder(), networkManager.DefaultInterface(), -1)
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
}
var autoRedirectOutputMark uint32
if networkManager != nil {
autoRedirectOutputMark = networkManager.AutoRedirectOutputMark()
}
if autoRedirectOutputMark > 0 {
dialer.Control = control.Append(dialer.Control, control.RoutingMark(autoRedirectOutputMark))
listener.Control = control.Append(listener.Control, control.RoutingMark(autoRedirectOutputMark))
}
if options.RoutingMark > 0 {
dialer.Control = control.Append(dialer.Control, control.RoutingMark(options.RoutingMark))
listener.Control = control.Append(listener.Control, control.RoutingMark(options.RoutingMark))
if autoRedirectOutputMark > 0 {
return nil, E.New("`auto_redirect` with `route_[_exclude]_address_set is conflict with `routing_mark`")
}
} else if networkManager != nil && networkManager.DefaultMark() > 0 {
dialer.Control = control.Append(dialer.Control, control.RoutingMark(networkManager.DefaultMark()))
listener.Control = control.Append(listener.Control, control.RoutingMark(networkManager.DefaultMark()))
if networkManager != nil {
autoRedirectOutputMark := networkManager.AutoRedirectOutputMark()
if autoRedirectOutputMark > 0 {
return nil, E.New("`auto_redirect` with `route_[_exclude]_address_set is conflict with `default_mark`")
if options.RoutingMark > 0 {
return nil, E.New("`routing_mark` is conflict with `tun.auto_redirect` with `tun.route_[_exclude]_address_set")
}
dialer.Control = control.Append(dialer.Control, control.RoutingMark(autoRedirectOutputMark))
listener.Control = control.Append(listener.Control, control.RoutingMark(autoRedirectOutputMark))
}
}
if C.NetworkStrategy(options.NetworkStrategy) != C.NetworkStrategyDefault {
if options.BindInterface != "" || options.Inet4BindAddress != nil || options.Inet6BindAddress != nil {
return nil, E.New("`network_strategy` is conflict with `bind_interface`, `inet4_bind_address` and `inet6_bind_address`")
}
networkStrategy = C.NetworkStrategy(options.NetworkStrategy)
networkFallbackDelay = time.Duration(options.NetworkFallbackDelay)
if networkManager == nil || !networkManager.AutoDetectInterface() {
return nil, E.New("`route.auto_detect_interface` is require by `network_strategy`")
}
}
if networkManager != nil && options.BindInterface == "" && options.Inet4BindAddress == nil && options.Inet6BindAddress == nil {
defaultOptions := networkManager.DefaultOptions()
if defaultOptions.DefaultInterface != "" {
bindFunc := control.BindToInterface(networkManager.InterfaceFinder(), defaultOptions.DefaultInterface, -1)
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
} else if networkManager.AutoDetectInterface() {
if defaultOptions.DefaultNetworkStrategy != C.NetworkStrategyDefault && C.NetworkStrategy(options.NetworkStrategy) == C.NetworkStrategyDefault {
networkStrategy = defaultOptions.DefaultNetworkStrategy
networkFallbackDelay = defaultOptions.DefaultFallbackDelay
bindFunc := networkManager.ProtectFunc()
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
} else {
bindFunc := networkManager.AutoDetectInterfaceFunc()
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
}
}
}
if options.ReuseAddr {
@ -130,6 +157,9 @@ func NewDefault(networkManager adapter.NetworkManager, options option.DialerOpti
listener.Control = control.Append(listener.Control, controlFn)
}
}
if networkStrategy != C.NetworkStrategyDefault && options.TCPFastOpen {
return nil, E.New("`tcp_fast_open` is conflict with `network_strategy` or `route.default_network_strategy`")
}
tcpDialer4, err := newTCPDialer(dialer4, options.TCPFastOpen)
if err != nil {
return nil, err
@ -139,14 +169,17 @@ func NewDefault(networkManager adapter.NetworkManager, options option.DialerOpti
return nil, err
}
return &DefaultDialer{
tcpDialer4,
tcpDialer6,
udpDialer4,
udpDialer6,
listener,
udpAddr4,
udpAddr6,
options.IsWireGuardListener,
dialer4: tcpDialer4,
dialer6: tcpDialer6,
udpDialer4: udpDialer4,
udpDialer6: udpDialer6,
udpListener: listener,
udpAddr4: udpAddr4,
udpAddr6: udpAddr6,
isWireGuardListener: options.IsWireGuardListener,
networkManager: networkManager,
networkStrategy: networkStrategy,
networkFallbackDelay: networkFallbackDelay,
}, nil
}
@ -154,6 +187,7 @@ func (d *DefaultDialer) DialContext(ctx context.Context, network string, address
if !address.IsValid() {
return nil, E.New("invalid address")
}
if d.networkStrategy == C.NetworkStrategyDefault {
switch N.NetworkName(network) {
case N.NetworkUDP:
if !address.IsIPv6() {
@ -167,9 +201,46 @@ func (d *DefaultDialer) DialContext(ctx context.Context, network string, address
} else {
return trackConn(DialSlowContext(&d.dialer6, ctx, network, address))
}
} else {
return d.DialParallelInterface(ctx, network, address, d.networkStrategy, d.networkFallbackDelay)
}
}
func (d *DefaultDialer) DialParallelInterface(ctx context.Context, network string, address M.Socksaddr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error) {
if strategy == C.NetworkStrategyDefault {
return d.DialContext(ctx, network, address)
}
if !d.networkManager.AutoDetectInterface() {
return nil, E.New("`route.auto_detect_interface` is require by `network_strategy`")
}
var dialer net.Dialer
if N.NetworkName(network) == N.NetworkTCP {
dialer = dialerFromTCPDialer(d.dialer4)
} else {
dialer = d.udpDialer4
}
fastFallback := time.Now().Sub(d.networkLastFallback.Load()) < C.TCPTimeout
var (
conn net.Conn
isPrimary bool
err error
)
if !fastFallback {
conn, isPrimary, err = d.dialParallelInterface(ctx, dialer, network, address.String(), strategy, fallbackDelay)
} else {
conn, isPrimary, err = d.dialParallelInterfaceFastFallback(ctx, dialer, network, address.String(), strategy, fallbackDelay, d.networkLastFallback.Store)
}
if err != nil {
return nil, err
}
if !fastFallback && !isPrimary {
d.networkLastFallback.Store(time.Now())
}
return trackConn(conn, nil)
}
func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
if d.networkStrategy == C.NetworkStrategyDefault {
if destination.IsIPv6() {
return trackPacketConn(d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr6))
} else if destination.IsIPv4() && !destination.Addr.IsUnspecified() {
@ -177,10 +248,27 @@ func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
} else {
return trackPacketConn(d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr4))
}
} else {
return d.ListenSerialInterfacePacket(ctx, destination, d.networkStrategy, d.networkFallbackDelay)
}
}
func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destination M.Socksaddr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, error) {
if strategy == C.NetworkStrategyDefault {
return d.ListenPacket(ctx, destination)
}
if !d.networkManager.AutoDetectInterface() {
return nil, E.New("`route.auto_detect_interface` is require by `network_strategy`")
}
network := N.NetworkUDP
if destination.IsIPv4() && !destination.Addr.IsUnspecified() {
network += "4"
}
return trackPacketConn(d.listenSerialInterfacePacket(ctx, d.udpListener, network, "", strategy, fallbackDelay))
}
func (d *DefaultDialer) ListenPacketCompat(network, address string) (net.PacketConn, error) {
return trackPacketConn(d.udpListener.ListenPacket(context.Background(), network, address))
return trackPacketConn(d.listenSerialInterfacePacket(context.Background(), d.udpListener, network, address, d.networkStrategy, d.networkFallbackDelay))
}
func trackConn(conn net.Conn, err error) (net.Conn, error) {

4
common/dialer/default_go1.20.go
View file

@ -13,3 +13,7 @@ type tcpDialer = tfo.Dialer
func newTCPDialer(dialer net.Dialer, tfoEnabled bool) (tcpDialer, error) {
return tfo.Dialer{Dialer: dialer, DisableTFO: !tfoEnabled}, nil
}
func dialerFromTCPDialer(dialer tcpDialer) net.Dialer {
return dialer.Dialer
}

4
common/dialer/default_nongo1.20.go
View file

@ -16,3 +16,7 @@ func newTCPDialer(dialer net.Dialer, tfoEnabled bool) (tcpDialer, error) {
}
return dialer, nil
}
func dialerFromTCPDialer(dialer tcpDialer) net.Dialer {
return dialer
}

241
common/dialer/default_parallel_interface.go Normal file
View file

@ -0,0 +1,241 @@
package dialer
import (
"context"
"net"
"time"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing/common/control"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
N "github.com/sagernet/sing/common/network"
)
func (d *DefaultDialer) dialParallelInterface(ctx context.Context, dialer net.Dialer, network string, addr string, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, bool, error) {
primaryInterfaces, fallbackInterfaces := selectInterfaces(d.networkManager, strategy)
if len(primaryInterfaces)+len(fallbackInterfaces) == 0 {
return nil, false, E.New("no available network interface")
}
if fallbackDelay == 0 {
fallbackDelay = N.DefaultFallbackDelay
}
returned := make(chan struct{})
defer close(returned)
type dialResult struct {
net.Conn
error
primary bool
}
results := make(chan dialResult) // unbuffered
startRacer := func(ctx context.Context, primary bool, iif adapter.NetworkInterface) {
perNetDialer := dialer
perNetDialer.Control = control.Append(perNetDialer.Control, control.BindToInterface(nil, iif.Name, iif.Index))
conn, err := perNetDialer.DialContext(ctx, network, addr)
if err != nil {
select {
case results <- dialResult{error: E.Cause(err, "dial ", iif.Name, " (", iif.Name, ")"), primary: primary}:
case <-returned:
}
} else {
select {
case results <- dialResult{Conn: conn}:
case <-returned:
conn.Close()
}
}
}
primaryCtx, primaryCancel := context.WithCancel(ctx)
defer primaryCancel()
for _, iif := range primaryInterfaces {
go startRacer(primaryCtx, true, iif)
}
var (
fallbackTimer *time.Timer
fallbackChan <-chan time.Time
)
if len(fallbackInterfaces) > 0 {
fallbackTimer = time.NewTimer(fallbackDelay)
defer fallbackTimer.Stop()
fallbackChan = fallbackTimer.C
}
var errors []error
for {
select {
case <-fallbackChan:
fallbackCtx, fallbackCancel := context.WithCancel(ctx)
defer fallbackCancel()
for _, iif := range fallbackInterfaces {
go startRacer(fallbackCtx, false, iif)
}
case res := <-results:
if res.error == nil {
return res.Conn, res.primary, nil
}
errors = append(errors, res.error)
if len(errors) == len(primaryInterfaces)+len(fallbackInterfaces) {
return nil, false, E.Errors(errors...)
}
if res.primary && fallbackTimer != nil && fallbackTimer.Stop() {
fallbackTimer.Reset(0)
}
}
}
}
func (d *DefaultDialer) dialParallelInterfaceFastFallback(ctx context.Context, dialer net.Dialer, network string, addr string, strategy C.NetworkStrategy, fallbackDelay time.Duration, resetFastFallback func(time.Time)) (net.Conn, bool, error) {
primaryInterfaces, fallbackInterfaces := selectInterfaces(d.networkManager, strategy)
if len(primaryInterfaces)+len(fallbackInterfaces) == 0 {
return nil, false, E.New("no available network interface")
}
if fallbackDelay == 0 {
fallbackDelay = N.DefaultFallbackDelay
}
returned := make(chan struct{})
defer close(returned)
type dialResult struct {
net.Conn
error
primary bool
}
startAt := time.Now()
results := make(chan dialResult) // unbuffered
startRacer := func(ctx context.Context, primary bool, iif adapter.NetworkInterface) {
perNetDialer := dialer
perNetDialer.Control = control.Append(perNetDialer.Control, control.BindToInterface(nil, iif.Name, iif.Index))
conn, err := perNetDialer.DialContext(ctx, network, addr)
if err != nil {
select {
case results <- dialResult{error: E.Cause(err, "dial ", iif.Name, " (", iif.Name, ")"), primary: primary}:
case <-returned:
}
} else {
select {
case results <- dialResult{Conn: conn}:
case <-returned:
if primary && time.Since(startAt) <= fallbackDelay {
resetFastFallback(time.Time{})
}
conn.Close()
}
}
}
for _, iif := range primaryInterfaces {
go startRacer(ctx, true, iif)
}
fallbackCtx, fallbackCancel := context.WithCancel(ctx)
defer fallbackCancel()
for _, iif := range fallbackInterfaces {
go startRacer(fallbackCtx, false, iif)
}
var errors []error
for {
select {
case res := <-results:
if res.error == nil {
return res.Conn, res.primary, nil
}
errors = append(errors, res.error)
if len(errors) == len(primaryInterfaces)+len(fallbackInterfaces) {
return nil, false, E.Errors(errors...)
}
}
}
}
func (d *DefaultDialer) listenSerialInterfacePacket(ctx context.Context, listener net.ListenConfig, network string, addr string, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, error) {
primaryInterfaces, fallbackInterfaces := selectInterfaces(d.networkManager, strategy)
if len(primaryInterfaces)+len(fallbackInterfaces) == 0 {
return nil, E.New("no available network interface")
}
if fallbackDelay == 0 {
fallbackDelay = N.DefaultFallbackDelay
}
var errors []error
for _, primaryInterface := range primaryInterfaces {
perNetListener := listener
perNetListener.Control = control.Append(perNetListener.Control, control.BindToInterface(nil, primaryInterface.Name, primaryInterface.Index))
conn, err := perNetListener.ListenPacket(ctx, network, addr)
if err == nil {
return conn, nil
}
errors = append(errors, E.Cause(err, "listen ", primaryInterface.Name, " (", primaryInterface.Name, ")"))
}
for _, fallbackInterface := range fallbackInterfaces {
perNetListener := listener
perNetListener.Control = control.Append(perNetListener.Control, control.BindToInterface(nil, fallbackInterface.Name, fallbackInterface.Index))
conn, err := perNetListener.ListenPacket(ctx, network, addr)
if err == nil {
return conn, nil
}
errors = append(errors, E.Cause(err, "listen ", fallbackInterface.Name, " (", fallbackInterface.Name, ")"))
}
return nil, E.Errors(errors...)
}
func selectInterfaces(networkManager adapter.NetworkManager, strategy C.NetworkStrategy) (primaryInterfaces []adapter.NetworkInterface, fallbackInterfaces []adapter.NetworkInterface) {
interfaces := networkManager.NetworkInterfaces()
switch strategy {
case C.NetworkStrategyFallback:
defaultIf := networkManager.InterfaceMonitor().DefaultInterface()
if defaultIf != nil {
for _, iif := range interfaces {
if iif.Index == defaultIf.Index {
primaryInterfaces = append(primaryInterfaces, iif)
} else {
fallbackInterfaces = append(fallbackInterfaces, iif)
}
}
} else {
primaryInterfaces = interfaces
}
case C.NetworkStrategyHybrid:
primaryInterfaces = interfaces
case C.NetworkStrategyWIFI:
for _, iif := range interfaces {
if iif.Type == C.InterfaceTypeWIFI {
primaryInterfaces = append(primaryInterfaces, iif)
} else {
fallbackInterfaces = append(fallbackInterfaces, iif)
}
}
case C.NetworkStrategyCellular:
for _, iif := range interfaces {
if iif.Type == C.InterfaceTypeCellular {
primaryInterfaces = append(primaryInterfaces, iif)
} else {
fallbackInterfaces = append(fallbackInterfaces, iif)
}
}
case C.NetworkStrategyEthernet:
for _, iif := range interfaces {
if iif.Type == C.InterfaceTypeEthernet {
primaryInterfaces = append(primaryInterfaces, iif)
} else {
fallbackInterfaces = append(fallbackInterfaces, iif)
}
}
case C.NetworkStrategyWIFIOnly:
for _, iif := range interfaces {
if iif.Type == C.InterfaceTypeWIFI {
primaryInterfaces = append(primaryInterfaces, iif)
}
}
case C.NetworkStrategyCellularOnly:
for _, iif := range interfaces {
if iif.Type == C.InterfaceTypeCellular {
primaryInterfaces = append(primaryInterfaces, iif)
}
}
case C.NetworkStrategyEthernetOnly:
for _, iif := range interfaces {
if iif.Type == C.InterfaceTypeEthernet {
primaryInterfaces = append(primaryInterfaces, iif)
}
}
default:
panic(F.ToString("unknown network strategy: ", strategy))
}
return primaryInterfaces, fallbackInterfaces
}

122
common/dialer/default_parallel_network.go Normal file
View file

@ -0,0 +1,122 @@
package dialer
import (
"context"
"net"
"net/netip"
"time"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func DialSerialNetwork(ctx context.Context, dialer ParallelInterfaceDialer, network string, destination M.Socksaddr, destinationAddresses []netip.Addr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error) {
if parallelDialer, isParallel := dialer.(ParallelNetworkDialer); isParallel {
return parallelDialer.DialParallelNetwork(ctx, network, destination, destinationAddresses, strategy, fallbackDelay)
}
var errors []error
for _, address := range destinationAddresses {
conn, err := dialer.DialParallelInterface(ctx, network, M.SocksaddrFrom(address, destination.Port), strategy, fallbackDelay)
if err == nil {
return conn, nil
}
errors = append(errors, err)
}
return nil, E.Errors(errors...)
}
func DialParallelNetwork(ctx context.Context, dialer ParallelInterfaceDialer, network string, destination M.Socksaddr, destinationAddresses []netip.Addr, preferIPv6 bool, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error) {
if fallbackDelay == 0 {
fallbackDelay = N.DefaultFallbackDelay
}
returned := make(chan struct{})
defer close(returned)
addresses4 := common.Filter(destinationAddresses, func(address netip.Addr) bool {
return address.Is4() || address.Is4In6()
})
addresses6 := common.Filter(destinationAddresses, func(address netip.Addr) bool {
return address.Is6() && !address.Is4In6()
})
if len(addresses4) == 0 || len(addresses6) == 0 {
return DialSerialNetwork(ctx, dialer, network, destination, destinationAddresses, strategy, fallbackDelay)
}
var primaries, fallbacks []netip.Addr
if preferIPv6 {
primaries = addresses6
fallbacks = addresses4
} else {
primaries = addresses4
fallbacks = addresses6
}
type dialResult struct {
net.Conn
error
primary bool
done bool
}
results := make(chan dialResult) // unbuffered
startRacer := func(ctx context.Context, primary bool) {
ras := primaries
if !primary {
ras = fallbacks
}
c, err := DialSerialNetwork(ctx, dialer, network, destination, ras, strategy, fallbackDelay)
select {
case results <- dialResult{Conn: c, error: err, primary: primary, done: true}:
case <-returned:
if c != nil {
c.Close()
}
}
}
var primary, fallback dialResult
primaryCtx, primaryCancel := context.WithCancel(ctx)
defer primaryCancel()
go startRacer(primaryCtx, true)
fallbackTimer := time.NewTimer(fallbackDelay)
defer fallbackTimer.Stop()
for {
select {
case <-fallbackTimer.C:
fallbackCtx, fallbackCancel := context.WithCancel(ctx)
defer fallbackCancel()
go startRacer(fallbackCtx, false)
case res := <-results:
if res.error == nil {
return res.Conn, nil
}
if res.primary {
primary = res
} else {
fallback = res
}
if primary.done && fallback.done {
return nil, primary.error
}
if res.primary && fallbackTimer.Stop() {
fallbackTimer.Reset(0)
}
}
}
}
func ListenSerialNetworkPacket(ctx context.Context, dialer ParallelInterfaceDialer, destination M.Socksaddr, destinationAddresses []netip.Addr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, netip.Addr, error) {
if parallelDialer, isParallel := dialer.(ParallelNetworkDialer); isParallel {
return parallelDialer.ListenSerialNetworkPacket(ctx, destination, destinationAddresses, strategy, fallbackDelay)
}
var errors []error
for _, address := range destinationAddresses {
conn, err := dialer.ListenSerialInterfacePacket(ctx, M.SocksaddrFrom(address, destination.Port), strategy, fallbackDelay)
if err == nil {
return conn, address, nil
}
errors = append(errors, err)
}
return nil, netip.Addr{}, E.Errors(errors...)
}

36
common/dialer/dialer.go
View file

@ -2,12 +2,16 @@ package dialer
import (
"context"
"net"
"net/netip"
"time"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-dns"
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"
)
@ -49,3 +53,35 @@ func New(ctx context.Context, options option.DialerOptions) (N.Dialer, error) {
}
return dialer, nil
}
func NewDirect(ctx context.Context, options option.DialerOptions) (ParallelInterfaceDialer, error) {
if options.Detour != "" {
return nil, E.New("`detour` is not supported in direct context")
}
networkManager := service.FromContext[adapter.NetworkManager](ctx)
if options.IsWireGuardListener {
return NewDefault(networkManager, options)
}
dialer, err := NewDefault(networkManager, options)
if err != nil {
return nil, err
}
return NewResolveParallelInterfaceDialer(
service.FromContext[adapter.Router](ctx),
dialer,
true,
dns.DomainStrategy(options.DomainStrategy),
time.Duration(options.FallbackDelay),
), nil
}
type ParallelInterfaceDialer interface {
N.Dialer
DialParallelInterface(ctx context.Context, network string, destination M.Socksaddr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error)
ListenSerialInterfacePacket(ctx context.Context, destination M.Socksaddr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, error)
}
type ParallelNetworkDialer interface {
DialParallelNetwork(ctx context.Context, network string, destination M.Socksaddr, destinationAddresses []netip.Addr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error)
ListenSerialNetworkPacket(ctx context.Context, destination M.Socksaddr, destinationAddresses []netip.Addr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, netip.Addr, error)
}

89
common/dialer/resolve.go
View file

@ -7,6 +7,7 @@ import (
"time"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common/bufio"
@ -14,7 +15,12 @@ import (
N "github.com/sagernet/sing/common/network"
)
type ResolveDialer struct {
var (
_ N.Dialer = (*resolveDialer)(nil)
_ ParallelInterfaceDialer = (*resolveParallelNetworkDialer)(nil)
)
type resolveDialer struct {
dialer N.Dialer
parallel bool
router adapter.Router
@ -22,8 +28,8 @@ type ResolveDialer struct {
fallbackDelay time.Duration
}
func NewResolveDialer(router adapter.Router, dialer N.Dialer, parallel bool, strategy dns.DomainStrategy, fallbackDelay time.Duration) *ResolveDialer {
return &ResolveDialer{
func NewResolveDialer(router adapter.Router, dialer N.Dialer, parallel bool, strategy dns.DomainStrategy, fallbackDelay time.Duration) N.Dialer {
return &resolveDialer{
dialer,
parallel,
router,
@ -32,7 +38,25 @@ func NewResolveDialer(router adapter.Router, dialer N.Dialer, parallel bool, str
}
}
func (d *ResolveDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
type resolveParallelNetworkDialer struct {
resolveDialer
dialer ParallelInterfaceDialer
}
func NewResolveParallelInterfaceDialer(router adapter.Router, dialer ParallelInterfaceDialer, parallel bool, strategy dns.DomainStrategy, fallbackDelay time.Duration) ParallelInterfaceDialer {
return &resolveParallelNetworkDialer{
resolveDialer{
dialer,
parallel,
router,
strategy,
fallbackDelay,
},
dialer,
}
}
func (d *resolveDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
if !destination.IsFqdn() {
return d.dialer.DialContext(ctx, network, destination)
}
@ -57,7 +81,7 @@ func (d *ResolveDialer) DialContext(ctx context.Context, network string, destina
}
}
func (d *ResolveDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
func (d *resolveDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
if !destination.IsFqdn() {
return d.dialer.ListenPacket(ctx, destination)
}
@ -82,6 +106,59 @@ func (d *ResolveDialer) ListenPacket(ctx context.Context, destination M.Socksadd
return bufio.NewNATPacketConn(bufio.NewPacketConn(conn), M.SocksaddrFrom(destinationAddress, destination.Port), destination), nil
}
func (d *ResolveDialer) Upstream() any {
func (d *resolveParallelNetworkDialer) DialParallelInterface(ctx context.Context, network string, destination M.Socksaddr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error) {
if !destination.IsFqdn() {
return d.dialer.DialContext(ctx, network, destination)
}
ctx, metadata := adapter.ExtendContext(ctx)
ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
metadata.Destination = destination
metadata.Domain = ""
var addresses []netip.Addr
var err error
if d.strategy == dns.DomainStrategyAsIS {
addresses, err = d.router.LookupDefault(ctx, destination.Fqdn)
} else {
addresses, err = d.router.Lookup(ctx, destination.Fqdn, d.strategy)
}
if err != nil {
return nil, err
}
if fallbackDelay == 0 {
fallbackDelay = d.fallbackDelay
}
if d.parallel {
return DialParallelNetwork(ctx, d.dialer, network, destination, addresses, d.strategy == dns.DomainStrategyPreferIPv6, strategy, fallbackDelay)
} else {
return DialSerialNetwork(ctx, d.dialer, network, destination, addresses, strategy, fallbackDelay)
}
}
func (d *resolveParallelNetworkDialer) ListenSerialInterfacePacket(ctx context.Context, destination M.Socksaddr, strategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, error) {
if !destination.IsFqdn() {
return d.dialer.ListenPacket(ctx, destination)
}
ctx, metadata := adapter.ExtendContext(ctx)
ctx = log.ContextWithOverrideLevel(ctx, log.LevelDebug)
metadata.Destination = destination
metadata.Domain = ""
var addresses []netip.Addr
var err error
if d.strategy == dns.DomainStrategyAsIS {
addresses, err = d.router.LookupDefault(ctx, destination.Fqdn)
} else {
addresses, err = d.router.Lookup(ctx, destination.Fqdn, d.strategy)
}
if err != nil {
return nil, err
}
conn, destinationAddress, err := ListenSerialNetworkPacket(ctx, d.dialer, destination, addresses, strategy, fallbackDelay)
if err != nil {
return nil, err
}
return bufio.NewNATPacketConn(bufio.NewPacketConn(conn), M.SocksaddrFrom(destinationAddress, destination.Port), destination), nil
}
func (d *resolveDialer) Upstream() any {
return d.dialer
}

10
common/settings/proxy_darwin.go
View file

@ -7,6 +7,7 @@ import (
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-tun"
"github.com/sagernet/sing/common/control"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
"github.com/sagernet/sing/common/shell"
@ -33,7 +34,7 @@ func NewSystemProxy(ctx context.Context, serverAddr M.Socksaddr, supportSOCKS bo
serverAddr: serverAddr,
supportSOCKS: supportSOCKS,
}
proxy.element = interfaceMonitor.RegisterCallback(proxy.update)
proxy.element = interfaceMonitor.RegisterCallback(proxy.routeUpdate)
return proxy, nil
}
@ -65,11 +66,8 @@ func (p *DarwinSystemProxy) Disable() error {
return err
}
func (p *DarwinSystemProxy) update(event int) {
if event&tun.EventInterfaceUpdate == 0 {
return
}
if !p.isEnabled {
func (p *DarwinSystemProxy) routeUpdate(defaultInterface *control.Interface, flags int) {
if !p.isEnabled || defaultInterface == nil {
return
}
_ = p.update0()

42
constant/network.go
View file

@ -1,8 +1,50 @@
package constant
import (
"github.com/sagernet/sing/common"
F "github.com/sagernet/sing/common/format"
)
const (
InterfaceTypeWIFI = "wifi"
InterfaceTypeCellular = "cellular"
InterfaceTypeEthernet = "ethernet"
InterfaceTypeOther = "other"
)
type NetworkStrategy int
const (
NetworkStrategyDefault NetworkStrategy = iota
NetworkStrategyFallback
NetworkStrategyHybrid
NetworkStrategyWIFI
NetworkStrategyCellular
NetworkStrategyEthernet
NetworkStrategyWIFIOnly
NetworkStrategyCellularOnly
NetworkStrategyEthernetOnly
)
var (
NetworkStrategyToString = map[NetworkStrategy]string{
NetworkStrategyDefault: "default",
NetworkStrategyFallback: "fallback",
NetworkStrategyHybrid: "hybrid",
NetworkStrategyWIFI: "wifi",
NetworkStrategyCellular: "cellular",
NetworkStrategyEthernet: "ethernet",
NetworkStrategyWIFIOnly: "wifi_only",
NetworkStrategyCellularOnly: "cellular_only",
NetworkStrategyEthernetOnly: "ethernet_only",
}
StringToNetworkStrategy = common.ReverseMap(NetworkStrategyToString)
)
func (s NetworkStrategy) String() string {
name, loaded := NetworkStrategyToString[s]
if !loaded {
return F.ToString(int(s))
}
return name
}

4
experimental/libbox/monitor.go
View file

@ -67,7 +67,7 @@ func (m *platformDefaultInterfaceMonitor) UpdateDefaultInterface(interfaceName s
callbacks := m.callbacks.Array()
m.defaultInterfaceAccess.Unlock()
for _, callback := range callbacks {
callback(tun.EventInterfaceUpdate)
callback(nil, 0)
}
return
}
@ -86,6 +86,6 @@ func (m *platformDefaultInterfaceMonitor) UpdateDefaultInterface(interfaceName s
callbacks := m.callbacks.Array()
m.defaultInterfaceAccess.Unlock()
for _, callback := range callbacks {
callback(tun.EventInterfaceUpdate)
callback(newInterface, 0)
}
}

2
option/outbound.go
View file

@ -78,7 +78,9 @@ type DialerOptions struct {
UDPFragment *bool `json:"udp_fragment,omitempty"`
UDPFragmentDefault bool `json:"-"`
DomainStrategy DomainStrategy `json:"domain_strategy,omitempty"`
NetworkStrategy NetworkStrategy `json:"network_strategy,omitempty"`
FallbackDelay badoption.Duration `json:"fallback_delay,omitempty"`
NetworkFallbackDelay badoption.Duration `json:"network_fallback_delay,omitempty"`
IsWireGuardListener bool `json:"-"`
}

4
option/route.go
View file

@ -1,5 +1,7 @@
package option
import "github.com/sagernet/sing/common/json/badoption"
type RouteOptions struct {
GeoIP *GeoIPOptions `json:"geoip,omitempty"`
Geosite *GeositeOptions `json:"geosite,omitempty"`
@ -11,6 +13,8 @@ type RouteOptions struct {
OverrideAndroidVPN bool `json:"override_android_vpn,omitempty"`
DefaultInterface string `json:"default_interface,omitempty"`
DefaultMark uint32 `json:"default_mark,omitempty"`
DefaultNetworkStrategy NetworkStrategy `json:"default_network_strategy,omitempty"`
DefaultFallbackDelay badoption.Duration `json:"default_fallback_delay,omitempty"`
}
type GeoIPOptions struct {

4
option/rule_action.go
View file

@ -138,11 +138,15 @@ func (r *DNSRuleAction) UnmarshalJSONContext(ctx context.Context, data []byte) e
type RouteActionOptions struct {
Outbound string `json:"outbound,omitempty"`
NetworkStrategy NetworkStrategy `json:"network_strategy,omitempty"`
FallbackDelay uint32 `json:"fallback_delay,omitempty"`
UDPDisableDomainUnmapping bool `json:"udp_disable_domain_unmapping,omitempty"`
UDPConnect bool `json:"udp_connect,omitempty"`
}
type _RouteOptionsActionOptions struct {
NetworkStrategy NetworkStrategy `json:"network_strategy,omitempty"`
FallbackDelay uint32 `json:"fallback_delay,omitempty"`
UDPDisableDomainUnmapping bool `json:"udp_disable_domain_unmapping,omitempty"`
UDPConnect bool `json:"udp_connect,omitempty"`
}

21
option/types.go
View file

@ -3,6 +3,7 @@ package option
import (
"strings"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-dns"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
@ -150,3 +151,23 @@ func DNSQueryTypeToString(queryType uint16) string {
}
return F.ToString(queryType)
}
type NetworkStrategy C.NetworkStrategy
func (n NetworkStrategy) MarshalJSON() ([]byte, error) {
return json.Marshal(C.NetworkStrategy(n).String())
}
func (n *NetworkStrategy) UnmarshalJSON(content []byte) error {
var value string
err := json.Unmarshal(content, &value)
if err != nil {
return err
}
strategy, loaded := C.StringToNetworkStrategy[value]
if !loaded {
return E.New("unknown network strategy: ", value)
}
*n = NetworkStrategy(strategy)
return nil
}

145
protocol/direct/outbound.go
View file

@ -13,6 +13,7 @@ import (
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
dns "github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/bufio"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
@ -24,14 +25,19 @@ func RegisterOutbound(registry *outbound.Registry) {
outbound.Register[option.DirectOutboundOptions](registry, C.TypeDirect, NewOutbound)
}
var _ N.ParallelDialer = (*Outbound)(nil)
var (
_ N.ParallelDialer = (*Outbound)(nil)
_ dialer.ParallelNetworkDialer = (*Outbound)(nil)
)
type Outbound struct {
outbound.Adapter
logger logger.ContextLogger
dialer N.Dialer
dialer dialer.ParallelInterfaceDialer
domainStrategy dns.DomainStrategy
fallbackDelay time.Duration
networkStrategy C.NetworkStrategy
networkFallbackDelay time.Duration
overrideOption int
overrideDestination M.Socksaddr
// loopBack *loopBackDetector
@ -39,7 +45,7 @@ type Outbound struct {
func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.DirectOutboundOptions) (adapter.Outbound, error) {
options.UDPFragmentDefault = true
outboundDialer, err := dialer.New(ctx, options.DialerOptions)
outboundDialer, err := dialer.NewDirect(ctx, options.DialerOptions)
if err != nil {
return nil, err
}
@ -48,6 +54,8 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
logger: logger,
domainStrategy: dns.DomainStrategy(options.DomainStrategy),
fallbackDelay: time.Duration(options.FallbackDelay),
networkStrategy: C.NetworkStrategy(options.NetworkStrategy),
networkFallbackDelay: time.Duration(options.NetworkFallbackDelay),
dialer: outboundDialer,
// loopBack: newLoopBackDetector(router),
}
@ -96,33 +104,6 @@ func (h *Outbound) DialContext(ctx context.Context, network string, destination
return h.dialer.DialContext(ctx, network, destination)
}
func (h *Outbound) DialParallel(ctx context.Context, network string, destination M.Socksaddr, destinationAddresses []netip.Addr) (net.Conn, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
metadata.Destination = destination
switch h.overrideOption {
case 1, 2:
// override address
return h.DialContext(ctx, network, destination)
case 3:
destination.Port = h.overrideDestination.Port
}
network = N.NetworkName(network)
switch network {
case N.NetworkTCP:
h.logger.InfoContext(ctx, "outbound connection to ", destination)
case N.NetworkUDP:
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
}
var domainStrategy dns.DomainStrategy
if h.domainStrategy != dns.DomainStrategyAsIS {
domainStrategy = h.domainStrategy
} else {
domainStrategy = dns.DomainStrategy(metadata.InboundOptions.DomainStrategy)
}
return N.DialParallel(ctx, h.dialer, network, destination, destinationAddresses, domainStrategy == dns.DomainStrategyPreferIPv6, h.fallbackDelay)
}
func (h *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
@ -154,6 +135,110 @@ func (h *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (n
return conn, nil
}
func (h *Outbound) DialParallel(ctx context.Context, network string, destination M.Socksaddr, destinationAddresses []netip.Addr) (net.Conn, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
metadata.Destination = destination
switch h.overrideOption {
case 1, 2:
// override address
return h.DialContext(ctx, network, destination)
case 3:
destination.Port = h.overrideDestination.Port
}
network = N.NetworkName(network)
switch network {
case N.NetworkTCP:
h.logger.InfoContext(ctx, "outbound connection to ", destination)
case N.NetworkUDP:
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
}
var domainStrategy dns.DomainStrategy
if h.domainStrategy != dns.DomainStrategyAsIS {
domainStrategy = h.domainStrategy
} else {
domainStrategy = dns.DomainStrategy(metadata.InboundOptions.DomainStrategy)
}
switch domainStrategy {
case dns.DomainStrategyUseIPv4:
destinationAddresses = common.Filter(destinationAddresses, netip.Addr.Is4)
if len(destinationAddresses) == 0 {
return nil, E.New("no IPv4 address available for ", destination)
}
case dns.DomainStrategyUseIPv6:
destinationAddresses = common.Filter(destinationAddresses, netip.Addr.Is6)
if len(destinationAddresses) == 0 {
return nil, E.New("no IPv6 address available for ", destination)
}
}
return dialer.DialParallelNetwork(ctx, h.dialer, network, destination, destinationAddresses, domainStrategy == dns.DomainStrategyPreferIPv6, h.networkStrategy, h.fallbackDelay)
}
func (h *Outbound) DialParallelNetwork(ctx context.Context, network string, destination M.Socksaddr, destinationAddresses []netip.Addr, networkStrategy C.NetworkStrategy, fallbackDelay time.Duration) (net.Conn, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
metadata.Destination = destination
switch h.overrideOption {
case 1, 2:
// override address
return h.DialContext(ctx, network, destination)
case 3:
destination.Port = h.overrideDestination.Port
}
network = N.NetworkName(network)
switch network {
case N.NetworkTCP:
h.logger.InfoContext(ctx, "outbound connection to ", destination)
case N.NetworkUDP:
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
}
var domainStrategy dns.DomainStrategy
if h.domainStrategy != dns.DomainStrategyAsIS {
domainStrategy = h.domainStrategy
} else {
domainStrategy = dns.DomainStrategy(metadata.InboundOptions.DomainStrategy)
}
switch domainStrategy {
case dns.DomainStrategyUseIPv4:
destinationAddresses = common.Filter(destinationAddresses, netip.Addr.Is4)
if len(destinationAddresses) == 0 {
return nil, E.New("no IPv4 address available for ", destination)
}
case dns.DomainStrategyUseIPv6:
destinationAddresses = common.Filter(destinationAddresses, netip.Addr.Is6)
if len(destinationAddresses) == 0 {
return nil, E.New("no IPv6 address available for ", destination)
}
}
return dialer.DialParallelNetwork(ctx, h.dialer, network, destination, destinationAddresses, domainStrategy == dns.DomainStrategyPreferIPv6, networkStrategy, fallbackDelay)
}
func (h *Outbound) ListenSerialNetworkPacket(ctx context.Context, destination M.Socksaddr, destinationAddresses []netip.Addr, networkStrategy C.NetworkStrategy, fallbackDelay time.Duration) (net.PacketConn, netip.Addr, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
metadata.Destination = destination
switch h.overrideOption {
case 1:
destination = h.overrideDestination
case 2:
newDestination := h.overrideDestination
newDestination.Port = destination.Port
destination = newDestination
case 3:
destination.Port = h.overrideDestination.Port
}
if h.overrideOption == 0 {
h.logger.InfoContext(ctx, "outbound packet connection")
} else {
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
}
conn, newDestination, err := dialer.ListenSerialNetworkPacket(ctx, h.dialer, destination, destinationAddresses, networkStrategy, fallbackDelay)
if err != nil {
return nil, netip.Addr{}, err
}
return conn, newDestination, nil
}
/*func (h *Outbound) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
if h.loopBack.CheckConn(metadata.Source.AddrPort(), M.AddrPortFromNet(conn.LocalAddr())) {
return E.New("reject loopback connection to ", metadata.Destination)

21
protocol/socks/outbound.go
View file

@ -10,7 +10,6 @@ import (
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
@ -115,23 +114,3 @@ func (h *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (n
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
return h.client.ListenPacket(ctx, destination)
}
// TODO
// Deprecated
func (h *Outbound) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
if h.resolve {
return outbound.NewDirectConnection(ctx, h.router, h, conn, metadata, dns.DomainStrategyUseIPv4)
} else {
return outbound.NewConnection(ctx, h, conn, metadata)
}
}
// TODO
// Deprecated
func (h *Outbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
if h.resolve {
return outbound.NewDirectPacketConnection(ctx, h.router, h, conn, metadata, dns.DomainStrategyUseIPv4)
} else {
return outbound.NewPacketConnection(ctx, h, conn, metadata)
}
}

13
protocol/wireguard/outbound.go
View file

@ -16,7 +16,6 @@ import (
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/transport/wireguard"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing-tun"
"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
@ -231,15 +230,3 @@ func (w *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (n
}
return w.tunDevice.ListenPacket(ctx, destination)
}
// TODO
// Deprecated
func (w *Outbound) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
return outbound.NewDirectConnection(ctx, w.router, w, conn, metadata, dns.DomainStrategyAsIS)
}
// TODO
// Deprecated
func (w *Outbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return outbound.NewDirectPacketConnection(ctx, w.router, w, conn, metadata, dns.DomainStrategyAsIS)
}

71
route/network.go
View file

@ -8,6 +8,7 @@ import (
"runtime"
"strings"
"syscall"
"time"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/conntrack"
@ -38,8 +39,7 @@ type NetworkManager struct {
networkInterfaces atomic.TypedValue[[]adapter.NetworkInterface]
autoDetectInterface bool
defaultInterface string
defaultMark uint32
defaultOptions adapter.NetworkOptions
autoRedirectOutputMark uint32
networkMonitor tun.NetworkUpdateMonitor
@ -58,12 +58,24 @@ func NewNetworkManager(ctx context.Context, logger logger.ContextLogger, routeOp
logger: logger,
interfaceFinder: control.NewDefaultInterfaceFinder(),
autoDetectInterface: routeOptions.AutoDetectInterface,
defaultInterface: routeOptions.DefaultInterface,
defaultMark: routeOptions.DefaultMark,
defaultOptions: adapter.NetworkOptions{
DefaultInterface: routeOptions.DefaultInterface,
DefaultMark: routeOptions.DefaultMark,
DefaultNetworkStrategy: C.NetworkStrategy(routeOptions.DefaultNetworkStrategy),
DefaultFallbackDelay: time.Duration(routeOptions.DefaultFallbackDelay),
},
pauseManager: service.FromContext[pause.Manager](ctx),
platformInterface: service.FromContext[platform.Interface](ctx),
outboundManager: service.FromContext[adapter.OutboundManager](ctx),
}
if C.NetworkStrategy(routeOptions.DefaultNetworkStrategy) != C.NetworkStrategyDefault {
if routeOptions.DefaultInterface != "" {
return nil, E.New("`default_network_strategy` is conflict with `default_interface`")
}
if !routeOptions.AutoDetectInterface {
return nil, E.New("`auto_detect_interface` is required by `default_network_strategy`")
}
}
usePlatformDefaultInterfaceMonitor := nm.platformInterface != nil
enforceInterfaceMonitor := routeOptions.AutoDetectInterface
if !usePlatformDefaultInterfaceMonitor {
@ -84,12 +96,12 @@ func NewNetworkManager(ctx context.Context, logger logger.ContextLogger, routeOp
if err != nil {
return nil, E.New("auto_detect_interface unsupported on current platform")
}
interfaceMonitor.RegisterCallback(nm.notifyNetworkUpdate)
interfaceMonitor.RegisterCallback(nm.notifyInterfaceUpdate)
nm.interfaceMonitor = interfaceMonitor
}
} else {
interfaceMonitor := nm.platformInterface.CreateDefaultInterfaceMonitor(logger)
interfaceMonitor.RegisterCallback(nm.notifyNetworkUpdate)
interfaceMonitor.RegisterCallback(nm.notifyInterfaceUpdate)
nm.interfaceMonitor = interfaceMonitor
}
return nm, nil
@ -265,10 +277,6 @@ func (r *NetworkManager) NetworkInterfaces() []adapter.NetworkInterface {
return r.networkInterfaces.Load()
}
func (r *NetworkManager) DefaultInterface() string {
return r.defaultInterface
}
func (r *NetworkManager) AutoDetectInterface() bool {
return r.autoDetectInterface
}
@ -301,8 +309,19 @@ func (r *NetworkManager) AutoDetectInterfaceFunc() control.Func {
}
}
func (r *NetworkManager) DefaultMark() uint32 {
return r.defaultMark
func (r *NetworkManager) ProtectFunc() control.Func {
if r.platformInterface != nil && r.platformInterface.UsePlatformAutoDetectInterfaceControl() {
return func(network, address string, conn syscall.RawConn) error {
return control.Raw(conn, func(fd uintptr) error {
return r.platformInterface.AutoDetectInterfaceControl(int(fd))
})
}
}
return nil
}
func (r *NetworkManager) DefaultOptions() adapter.NetworkOptions {
return r.defaultOptions
}
func (r *NetworkManager) RegisterAutoRedirectOutputMark(mark uint32) error {
@ -344,16 +363,14 @@ func (r *NetworkManager) ResetNetwork() {
}
}
func (r *NetworkManager) notifyNetworkUpdate(event int) {
if event == tun.EventNoRoute {
func (r *NetworkManager) notifyInterfaceUpdate(defaultInterface *control.Interface, flags int) {
if defaultInterface == nil {
r.pauseManager.NetworkPause()
r.logger.Error("missing default interface")
} else {
r.pauseManager.NetworkWake()
defaultInterface := r.DefaultNetworkInterface()
if defaultInterface == nil {
panic("invalid interface context")
return
}
r.pauseManager.NetworkWake()
var options []string
options = append(options, F.ToString("index ", defaultInterface.Index))
if C.IsAndroid && r.platformInterface == nil {
@ -364,14 +381,19 @@ func (r *NetworkManager) notifyNetworkUpdate(event int) {
vpnStatus = "disabled"
}
options = append(options, "vpn "+vpnStatus)
} else {
if defaultInterface.Type != "" {
options = append(options, F.ToString("type ", defaultInterface.Type))
} else if r.platformInterface != nil {
networkInterface := common.Find(r.networkInterfaces.Load(), func(it adapter.NetworkInterface) bool {
return it.Interface.Index == defaultInterface.Index
})
if networkInterface.Type == "" {
// race
return
}
if defaultInterface.Expensive {
options = append(options, F.ToString("type ", networkInterface.Type))
if networkInterface.Expensive {
options = append(options, "expensive")
}
if defaultInterface.Constrained {
if networkInterface.Constrained {
options = append(options, "constrained")
}
}
@ -385,7 +407,6 @@ func (r *NetworkManager) notifyNetworkUpdate(event int) {
}
}
}
}
if !r.started {
return

4
route/route.go
View file

@ -424,9 +424,13 @@ match:
}
switch action := currentRule.Action().(type) {
case *rule.RuleActionRoute:
metadata.NetworkStrategy = action.NetworkStrategy
metadata.FallbackDelay = action.FallbackDelay
metadata.UDPDisableDomainUnmapping = action.UDPDisableDomainUnmapping
metadata.UDPConnect = action.UDPConnect
case *rule.RuleActionRouteOptions:
metadata.NetworkStrategy = action.NetworkStrategy
metadata.FallbackDelay = action.FallbackDelay
metadata.UDPDisableDomainUnmapping = action.UDPDisableDomainUnmapping
metadata.UDPConnect = action.UDPConnect
case *rule.RuleActionSniff:

6
route/rule/rule_action.go
View file

@ -30,12 +30,16 @@ func NewRuleAction(ctx context.Context, logger logger.ContextLogger, action opti
return &RuleActionRoute{
Outbound: action.RouteOptions.Outbound,
RuleActionRouteOptions: RuleActionRouteOptions{
NetworkStrategy: C.NetworkStrategy(action.RouteOptions.NetworkStrategy),
FallbackDelay: time.Duration(action.RouteOptions.FallbackDelay),
UDPDisableDomainUnmapping: action.RouteOptions.UDPDisableDomainUnmapping,
UDPConnect: action.RouteOptions.UDPConnect,
},
}, nil
case C.RuleActionTypeRouteOptions:
return &RuleActionRouteOptions{
NetworkStrategy: C.NetworkStrategy(action.RouteOptionsOptions.NetworkStrategy),
FallbackDelay: time.Duration(action.RouteOptionsOptions.FallbackDelay),
UDPDisableDomainUnmapping: action.RouteOptionsOptions.UDPDisableDomainUnmapping,
UDPConnect: action.RouteOptionsOptions.UDPConnect,
}, nil
@ -135,6 +139,8 @@ func (r *RuleActionRoute) String() string {
}
type RuleActionRouteOptions struct {
NetworkStrategy C.NetworkStrategy
FallbackDelay time.Duration
UDPDisableDomainUnmapping bool
UDPConnect bool
}

2
transport/dhcp/server.go
View file

@ -166,7 +166,7 @@ func (t *Transport) updateServers() error {
}
}
func (t *Transport) interfaceUpdated(int) {
func (t *Transport) interfaceUpdated(defaultInterface *control.Interface, flags int) {
err := t.updateServers()
if err != nil {
t.options.Logger.Error("update servers: ", err)