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chore: add tuic-server listener

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This commit is contained in:
gVisor bot 2022-11-28 17:09:25 +08:00
parent 797e54c92f
commit dbe9c4ba47
13 changed files with 1063 additions and 330 deletions
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2
adapter/outbound/tuic.go
View file

@ -212,7 +212,7 @@ func NewTuic(option TuicOption) (*Tuic, error) {
UdpRelayMode: option.UdpRelayMode,
CongestionController: option.CongestionController,
ReduceRtt: option.ReduceRtt,
RequestTimeout: option.RequestTimeout,
RequestTimeout: time.Duration(option.RequestTimeout) * time.Millisecond,
MaxUdpRelayPacketSize: option.MaxUdpRelayPacketSize,
FastOpen: option.FastOpen,
MaxOpenStreams: clientMaxOpenStreams,

66
config/config.go
View file

@ -54,6 +54,7 @@ type General struct {
TCPConcurrent bool `json:"tcp-concurrent"`
EnableProcess bool `json:"enable-process"`
Tun Tun `json:"tun"`
TuicServer TuicServer `json:"tuic-server"`
Sniffing bool `json:"sniffing"`
EBpf EBpf `json:"-"`
}
@ -114,6 +115,24 @@ type Profile struct {
StoreFakeIP bool `yaml:"store-fake-ip"`
}
type TuicServer struct {
Enable bool `yaml:"enable" json:"enable"`
Listen string `yaml:"listen" json:"listen"`
Token []string `yaml:"token" json:"token"`
Certificate string `yaml:"certificate" json:"certificate"`
PrivateKey string `yaml:"private-key" json:"private-key"`
CongestionController string `yaml:"congestion-controller" json:"congestion-controller,omitempty"`
MaxIdleTime int `yaml:"max-idle-time" json:"max-idle-time,omitempty"`
AuthenticationTimeout int `yaml:"authentication-timeout" json:"authentication-timeout,omitempty"`
ALPN []string `yaml:"alpn" json:"alpn,omitempty"`
MaxUdpRelayPacketSize int `yaml:"max-udp-relay-packet-size" json:"max-udp-relay-packet-size,omitempty"`
}
func (t TuicServer) String() string {
b, _ := json.Marshal(t)
return string(b)
}
// Tun config
type Tun struct {
Enable bool `yaml:"enable" json:"enable"`
@ -282,6 +301,19 @@ type RawTun struct {
UDPTimeout int64 `yaml:"udp-timeout" json:"udp_timeout,omitempty"`
}
type RawTuicServer struct {
Enable bool `yaml:"enable" json:"enable"`
Listen string `yaml:"listen" json:"listen"`
Token []string `yaml:"token" json:"token"`
Certificate string `yaml:"certificate" json:"certificate"`
PrivateKey string `yaml:"private-key" json:"private-key"`
CongestionController string `yaml:"congestion-controller" json:"congestion-controller,omitempty"`
MaxIdleTime int `yaml:"max-idle-time" json:"max-idle-time,omitempty"`
AuthenticationTimeout int `yaml:"authentication-timeout" json:"authentication-timeout,omitempty"`
ALPN []string `yaml:"alpn" json:"alpn,omitempty"`
MaxUdpRelayPacketSize int `yaml:"max-udp-relay-packet-size" json:"max-udp-relay-packet-size,omitempty"`
}
type RawConfig struct {
Port int `yaml:"port"`
SocksPort int `yaml:"socks-port"`
@ -316,6 +348,7 @@ type RawConfig struct {
Hosts map[string]string `yaml:"hosts"`
DNS RawDNS `yaml:"dns"`
Tun RawTun `yaml:"tun"`
TuicServer RawTuicServer `yaml:"tuic-server"`
EBpf EBpf `yaml:"ebpf"`
IPTables IPTables `yaml:"iptables"`
Experimental Experimental `yaml:"experimental"`
@ -392,6 +425,18 @@ func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
AutoDetectInterface: true,
Inet6Address: []ListenPrefix{ListenPrefix(netip.MustParsePrefix("fdfe:dcba:9876::1/126"))},
},
TuicServer: RawTuicServer{
Enable: false,
Token: nil,
Certificate: "",
PrivateKey: "",
Listen: "",
CongestionController: "",
MaxIdleTime: 15000,
AuthenticationTimeout: 1000,
ALPN: []string{"h3"},
MaxUdpRelayPacketSize: 1500,
},
EBpf: EBpf{
RedirectToTun: []string{},
AutoRedir: []string{},
@ -508,6 +553,11 @@ func ParseRawConfig(rawCfg *RawConfig) (*Config, error) {
return nil, err
}
err = parseTuicServer(rawCfg.TuicServer, config.General)
if err != nil {
return nil, err
}
config.Users = parseAuthentication(rawCfg.Authentication)
config.Sniffer, err = parseSniffer(rawCfg.Sniffer)
@ -1197,6 +1247,22 @@ func parseTun(rawTun RawTun, general *General) error {
return nil
}
func parseTuicServer(rawTuic RawTuicServer, general *General) error {
general.TuicServer = TuicServer{
Enable: rawTuic.Enable,
Listen: rawTuic.Listen,
Token: rawTuic.Token,
Certificate: rawTuic.Certificate,
PrivateKey: rawTuic.PrivateKey,
CongestionController: rawTuic.CongestionController,
MaxIdleTime: rawTuic.MaxIdleTime,
AuthenticationTimeout: rawTuic.AuthenticationTimeout,
ALPN: rawTuic.ALPN,
MaxUdpRelayPacketSize: rawTuic.MaxUdpRelayPacketSize,
}
return nil
}
func parseSniffer(snifferRaw RawSniffer) (*Sniffer, error) {
sniffer := &Sniffer{
Enable: snifferRaw.Enable,

13
constant/metadata.go
View file

@ -27,6 +27,7 @@ const (
TCPTUN
UDPTUN
TUN
TUIC
INNER
)
@ -71,6 +72,8 @@ func (t Type) String() string {
return "UdpTun"
case TUN:
return "Tun"
case TUIC:
return "Tuic"
case INNER:
return "Inner"
default:
@ -89,12 +92,22 @@ func ParseType(t string) (*Type, error) {
res = SOCKS4
case "SOCKS5":
res = SOCKS5
case "SHADOWSOCKS":
res = SHADOWSOCKS
case "VMESS":
res = VMESS
case "REDIR":
res = REDIR
case "TPROXY":
res = TPROXY
case "TCPTUN":
res = TCPTUN
case "UDPTUN":
res = UDPTUN
case "TUN":
res = TUN
case "TUIC":
res = TUIC
case "INNER":
res = INNER
default:

15
docs/config.yaml
View file

@ -103,6 +103,21 @@ sniffer:
# tcptun-config: 127.0.0.1:801=www.example.com:80,127.0.0.1:4431=www.example.com:443
# udptun-config: 127.0.0.1:531=8.8.8.8:53,127.0.0.1:532=1.1.1.1:53
# tuic服务器入口（传入流量将和socks,mixed等入口一样按照mode所指定的方式进行匹配处理）
#tuic-server:
# enable: true
# listen: 127.0.0.1:10443
# token:
# - TOKEN
# certificate: ./server.crt
# private-key: ./server.key
# congestion-controller: bbr
# max-idle-time: 15000
# authentication-timeout: 1000
# alpn:
# - h3
# max-udp-relay-packet-size: 1500
profile:
# 存储select选择记录
store-selected: false

1
hub/executor/executor.go
View file

@ -351,6 +351,7 @@ func updateGeneral(general *config.General, force bool) {
P.ReCreateVmess(general.VmessConfig, tcpIn, udpIn)
P.ReCreateTcpTun(general.TcpTunConfig, tcpIn, udpIn)
P.ReCreateUdpTun(general.UdpTunConfig, tcpIn, udpIn)
P.ReCreateTuic(general.TuicServer, tcpIn, udpIn)
}
func updateUsers(users []auth.AuthUser) {

4
hub/route/configs.go
View file

@ -41,6 +41,7 @@ type configSchema struct {
TProxyPort *int `json:"tproxy-port"`
MixedPort *int `json:"mixed-port"`
Tun *tunSchema `json:"tun"`
TuicServer *config.TuicServer `json:"tuic-server"`
ShadowSocksConfig *string `json:"ss-config"`
VmessConfig *string `json:"vmess-config"`
TcptunConfig *string `json:"tcptun-config"`
@ -203,6 +204,9 @@ func patchConfigs(w http.ResponseWriter, r *http.Request) {
P.ReCreateVmess(pointerOrDefaultString(general.VmessConfig, ports.VmessConfig), tcpIn, udpIn)
P.ReCreateTcpTun(pointerOrDefaultString(general.TcptunConfig, ports.TcpTunConfig), tcpIn, udpIn)
P.ReCreateUdpTun(pointerOrDefaultString(general.UdptunConfig, ports.UdpTunConfig), tcpIn, udpIn)
if general.TuicServer != nil {
P.ReCreateTuic(*general.TuicServer, tcpIn, udpIn)
}
if general.Mode != nil {
tunnel.SetMode(*general.Mode)

42
listener/listener.go
View file

@ -21,6 +21,7 @@ import (
"github.com/Dreamacro/clash/listener/sing_vmess"
"github.com/Dreamacro/clash/listener/socks"
"github.com/Dreamacro/clash/listener/tproxy"
"github.com/Dreamacro/clash/listener/tuic"
"github.com/Dreamacro/clash/listener/tunnel"
"github.com/Dreamacro/clash/log"
)
@ -43,6 +44,7 @@ var (
vmessListener *sing_vmess.Listener
tcpTunListener *tunnel.Listener
udpTunListener *tunnel.UdpListener
tuicListener *tuic.Listener
autoRedirListener *autoredir.Listener
autoRedirProgram *ebpf.TcEBpfProgram
tcProgram *ebpf.TcEBpfProgram
@ -58,6 +60,7 @@ var (
vmessMux sync.Mutex
tcpTunMux sync.Mutex
udpTunMux sync.Mutex
tuicMux sync.Mutex
autoRedirMux sync.Mutex
tcMux sync.Mutex
@ -390,6 +393,45 @@ func ReCreateUdpTun(config string, tcpIn chan<- C.ConnContext, udpIn chan<- *inb
return
}
func ReCreateTuic(config config.TuicServer, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
tuicMux.Lock()
defer tuicMux.Unlock()
shouldIgnore := false
var err error
defer func() {
if err != nil {
log.Errorln("Start Tuic server error: %s", err.Error())
}
}()
if tuicListener != nil {
if tuicListener.Config().String() != config.String() {
tuicListener.Close()
tuicListener = nil
} else {
shouldIgnore = true
}
}
if shouldIgnore {
return
}
if !config.Enable {
return
}
listener, err := tuic.New(config, tcpIn, udpIn)
if err != nil {
return
}
tuicListener = listener
return
}
func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
tproxyMux.Lock()
defer tproxyMux.Unlock()

132
listener/tuic/server.go Normal file
View file

@ -0,0 +1,132 @@
package tuic
import (
"crypto/tls"
"net"
"strings"
"time"
"github.com/metacubex/quic-go"
"github.com/Dreamacro/clash/adapter/inbound"
"github.com/Dreamacro/clash/common/sockopt"
"github.com/Dreamacro/clash/config"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/transport/socks5"
"github.com/Dreamacro/clash/transport/tuic"
)
const (
DefaultStreamReceiveWindow = 15728640 // 15 MB/s
DefaultConnectionReceiveWindow = 67108864 // 64 MB/s
)
type Listener struct {
closed bool
config config.TuicServer
udpListeners []net.PacketConn
servers []*tuic.Server
}
func New(config config.TuicServer, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) (*Listener, error) {
cert, err := tls.LoadX509KeyPair(config.Certificate, config.PrivateKey)
if err != nil {
return nil, err
}
tlsConfig := &tls.Config{
MinVersion: tls.VersionTLS13,
Certificates: []tls.Certificate{cert},
}
if len(config.ALPN) > 0 {
tlsConfig.NextProtos = config.ALPN
} else {
tlsConfig.NextProtos = []string{"h3"}
}
quicConfig := &quic.Config{
MaxIdleTimeout: time.Duration(config.MaxIdleTime) * time.Millisecond,
MaxIncomingStreams: 1 >> 32,
MaxIncomingUniStreams: 1 >> 32,
EnableDatagrams: true,
}
quicConfig.InitialStreamReceiveWindow = DefaultStreamReceiveWindow / 10
quicConfig.MaxStreamReceiveWindow = DefaultStreamReceiveWindow
quicConfig.InitialConnectionReceiveWindow = DefaultConnectionReceiveWindow / 10
quicConfig.MaxConnectionReceiveWindow = DefaultConnectionReceiveWindow
tokens := make([][32]byte, len(config.Token))
for i, token := range config.Token {
tokens[i] = tuic.GenTKN(token)
}
option := &tuic.ServerOption{
HandleTcpFn: func(conn net.Conn, addr string) error {
tcpIn <- inbound.NewSocket(socks5.ParseAddr(addr), conn, C.TUIC)
return nil
},
HandleUdpFn: func(addr *net.UDPAddr, packet C.UDPPacket) error {
select {
case udpIn <- inbound.NewPacket(socks5.ParseAddrToSocksAddr(addr), packet, C.TUIC):
default:
}
return nil
},
TlsConfig: tlsConfig,
QuicConfig: quicConfig,
Tokens: tokens,
CongestionController: config.CongestionController,
AuthenticationTimeout: time.Duration(config.AuthenticationTimeout) * time.Millisecond,
MaxUdpRelayPacketSize: config.MaxUdpRelayPacketSize,
}
sl := &Listener{false, config, nil, nil}
for _, addr := range strings.Split(config.Listen, ",") {
addr := addr
ul, err := net.ListenPacket("udp", addr)
if err != nil {
return nil, err
}
err = sockopt.UDPReuseaddr(ul.(*net.UDPConn))
if err != nil {
log.Warnln("Failed to Reuse UDP Address: %s", err)
}
sl.udpListeners = append(sl.udpListeners, ul)
server, err := tuic.NewServer(option, ul)
if err != nil {
return nil, err
}
sl.servers = append(sl.servers, server)
go func() {
log.Infoln("Tuic proxy listening at: %s", ul.LocalAddr().String())
err := server.Serve()
if err != nil {
if sl.closed {
return
}
}
}()
}
return sl, nil
}
func (l *Listener) Close() {
l.closed = true
for _, lis := range l.servers {
_ = lis.Close()
}
for _, lis := range l.udpListeners {
_ = lis.Close()
}
}
func (l *Listener) Config() config.TuicServer {
return l.config
}

285
transport/tuic/client.go
View file

@ -6,10 +6,8 @@ import (
"context"
"crypto/tls"
"errors"
"fmt"
"math/rand"
"net"
"net/netip"
"runtime"
"sync"
"sync/atomic"
@ -21,7 +19,6 @@ import (
"github.com/Dreamacro/clash/common/pool"
"github.com/Dreamacro/clash/component/dialer"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/transport/tuic/congestion"
)
var (
@ -39,7 +36,7 @@ type ClientOption struct {
UdpRelayMode string
CongestionController string
ReduceRtt bool
RequestTimeout int
RequestTimeout time.Duration
MaxUdpRelayPacketSize int
FastOpen bool
MaxOpenStreams int64
@ -53,6 +50,7 @@ type Client struct {
connMutex sync.Mutex
openStreams atomic.Int64
closed atomic.Bool
udpInputMap sync.Map
@ -82,37 +80,24 @@ func (t *Client) getQuicConn(ctx context.Context) (quic.Connection, error) {
return nil, err
}
switch t.CongestionController {
case "cubic":
quicConn.SetCongestionControl(
congestion.NewCubicSender(
congestion.DefaultClock{},
congestion.GetMaxPacketSize(quicConn.RemoteAddr()),
false,
nil,
),
)
case "new_reno":
quicConn.SetCongestionControl(
congestion.NewCubicSender(
congestion.DefaultClock{},
congestion.GetMaxPacketSize(quicConn.RemoteAddr()),
true,
nil,
),
)
case "bbr":
quicConn.SetCongestionControl(
congestion.NewBBRSender(
congestion.DefaultClock{},
congestion.GetMaxPacketSize(quicConn.RemoteAddr()),
congestion.InitialCongestionWindow,
congestion.DefaultBBRMaxCongestionWindow,
),
)
SetCongestionController(quicConn, t.CongestionController)
go func() {
_ = t.sendAuthentication(quicConn)
}()
if t.udp {
go func() {
_ = t.parseUDP(quicConn)
}()
}
sendAuthentication := func(quicConn quic.Connection) (err error) {
t.quicConn = quicConn
t.openStreams.Store(0)
return quicConn, nil
}
func (t *Client) sendAuthentication(quicConn quic.Connection) (err error) {
defer func() {
t.deferQuicConn(quicConn, err)
}()
@ -137,7 +122,7 @@ func (t *Client) getQuicConn(ctx context.Context) (quic.Connection, error) {
return nil
}
parseUDP := func(quicConn quic.Connection) (err error) {
func (t *Client) parseUDP(quicConn quic.Connection) (err error) {
defer func() {
t.deferQuicConn(quicConn, err)
}()
@ -214,28 +199,22 @@ func (t *Client) getQuicConn(ctx context.Context) (quic.Connection, error) {
}
}
go sendAuthentication(quicConn)
if t.udp {
go parseUDP(quicConn)
}
t.quicConn = quicConn
return quicConn, nil
}
func (t *Client) deferQuicConn(quicConn quic.Connection, err error) {
var netError net.Error
if err != nil && errors.As(err, &netError) {
t.connMutex.Lock()
defer t.connMutex.Unlock()
if t.quicConn == quicConn {
t.Close(err)
t.forceClose(err, true)
}
}
}
func (t *Client) Close(err error) {
func (t *Client) forceClose(err error, locked bool) {
if !locked {
t.connMutex.Lock()
defer t.connMutex.Unlock()
}
quicConn := t.quicConn
if quicConn != nil {
_ = quicConn.CloseWithError(ProtocolError, err.Error())
@ -250,6 +229,13 @@ func (t *Client) Close(err error) {
}
}
func (t *Client) Close() {
t.closed.Store(true)
if t.openStreams.Load() == 0 {
t.forceClose(ClientClosed, false)
}
}
func (t *Client) DialContext(ctx context.Context, metadata *C.Metadata) (net.Conn, error) {
quicConn, err := t.getQuicConn(ctx)
if err != nil {
@ -278,7 +264,15 @@ func (t *Client) DialContext(ctx context.Context, metadata *C.Metadata) (net.Con
Stream: quicStream,
lAddr: quicConn.LocalAddr(),
rAddr: quicConn.RemoteAddr(),
client: t,
ref: t,
closeDeferFn: func() {
time.AfterFunc(C.DefaultTCPTimeout, func() {
openStreams := t.openStreams.Add(-1)
if openStreams == 0 && t.closed.Load() {
t.forceClose(ClientClosed, false)
}
})
},
}
_, err = buf.WriteTo(stream)
if err != nil {
@ -306,12 +300,12 @@ type earlyConn struct {
resOnce sync.Once
resErr error
RequestTimeout int
RequestTimeout time.Duration
}
func (conn *earlyConn) response() error {
if conn.RequestTimeout > 0 {
_ = conn.SetReadDeadline(time.Now().Add(time.Duration(conn.RequestTimeout) * time.Millisecond))
_ = conn.SetReadDeadline(time.Now().Add(conn.RequestTimeout))
}
response, err := ReadResponse(conn)
if err != nil {
@ -341,59 +335,6 @@ func (conn *earlyConn) Read(b []byte) (n int, err error) {
return conn.BufferedConn.Read(b)
}
type quicStreamConn struct {
quic.Stream
lock sync.Mutex
lAddr net.Addr
rAddr net.Addr
client *Client
closeOnce sync.Once
closeErr error
}
func (q *quicStreamConn) Write(p []byte) (n int, err error) {
q.lock.Lock()
defer q.lock.Unlock()
return q.Stream.Write(p)
}
func (q *quicStreamConn) Close() error {
q.closeOnce.Do(func() {
q.closeErr = q.close()
})
return q.closeErr
}
func (q *quicStreamConn) close() error {
defer time.AfterFunc(C.DefaultTCPTimeout, func() {
q.client.openStreams.Add(-1)
})
// https://github.com/cloudflare/cloudflared/commit/ed2bac026db46b239699ac5ce4fcf122d7cab2cd
// Make sure a possible writer does not block the lock forever. We need it, so we can close the writer
// side of the stream safely.
_ = q.Stream.SetWriteDeadline(time.Now())
// This lock is eventually acquired despite Write also acquiring it, because we set a deadline to writes.
q.lock.Lock()
defer q.lock.Unlock()
// We have to clean up the receiving stream ourselves since the Close in the bottom does not handle that.
q.Stream.CancelRead(0)
return q.Stream.Close()
}
func (q *quicStreamConn) LocalAddr() net.Addr {
return q.lAddr
}
func (q *quicStreamConn) RemoteAddr() net.Addr {
return q.rAddr
}
var _ net.Conn = &quicStreamConn{}
func (t *Client) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (net.PacketConn, error) {
quicConn, err := t.getQuicConn(ctx)
if err != nil {
@ -418,136 +359,24 @@ func (t *Client) ListenPacketContext(ctx context.Context, metadata *C.Metadata)
connId: connId,
quicConn: quicConn,
lAddr: quicConn.LocalAddr(),
client: t,
inputConn: N.NewBufferedConn(pipe2),
udpRelayMode: t.UdpRelayMode,
maxUdpRelayPacketSize: t.MaxUdpRelayPacketSize,
ref: t,
deferQuicConnFn: t.deferQuicConn,
closeDeferFn: func() {
t.udpInputMap.Delete(connId)
time.AfterFunc(C.DefaultUDPTimeout, func() {
openStreams := t.openStreams.Add(-1)
if openStreams == 0 && t.closed.Load() {
t.forceClose(ClientClosed, false)
}
})
},
}
return pc, nil
}
type quicStreamPacketConn struct {
connId uint32
quicConn quic.Connection
lAddr net.Addr
client *Client
inputConn *N.BufferedConn
closeOnce sync.Once
closeErr error
closed bool
}
func (q *quicStreamPacketConn) Close() error {
q.closeOnce.Do(func() {
q.closed = true
q.closeErr = q.close()
})
return q.closeErr
}
func (q *quicStreamPacketConn) close() (err error) {
defer time.AfterFunc(C.DefaultTCPTimeout, func() {
q.client.openStreams.Add(-1)
})
defer func() {
q.client.deferQuicConn(q.quicConn, err)
}()
q.client.udpInputMap.Delete(q.connId)
_ = q.inputConn.Close()
buf := pool.GetBuffer()
defer pool.PutBuffer(buf)
err = NewDissociate(q.connId).WriteTo(buf)
if err != nil {
return
}
stream, err := q.quicConn.OpenUniStream()
if err != nil {
return
}
_, err = buf.WriteTo(stream)
if err != nil {
return
}
err = stream.Close()
if err != nil {
return
}
return
}
func (q *quicStreamPacketConn) SetDeadline(t time.Time) error {
//TODO implement me
return nil
}
func (q *quicStreamPacketConn) SetReadDeadline(t time.Time) error {
return q.inputConn.SetReadDeadline(t)
}
func (q *quicStreamPacketConn) SetWriteDeadline(t time.Time) error {
//TODO implement me
return nil
}
func (q *quicStreamPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
packet, err := ReadPacket(q.inputConn)
if err != nil {
return
}
n = copy(p, packet.DATA)
addr = packet.ADDR.UDPAddr()
return
}
func (q *quicStreamPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
if len(p) > q.client.MaxUdpRelayPacketSize {
return 0, fmt.Errorf("udp packet too large(%d > %d)", len(p), q.client.MaxUdpRelayPacketSize)
}
if q.closed {
return 0, net.ErrClosed
}
defer func() {
q.client.deferQuicConn(q.quicConn, err)
}()
addr.String()
buf := pool.GetBuffer()
defer pool.PutBuffer(buf)
addrPort, err := netip.ParseAddrPort(addr.String())
if err != nil {
return
}
err = NewPacket(q.connId, uint16(len(p)), NewAddressAddrPort(addrPort), p).WriteTo(buf)
if err != nil {
return
}
switch q.client.UdpRelayMode {
case "quic":
var stream quic.SendStream
stream, err = q.quicConn.OpenUniStream()
if err != nil {
return
}
defer stream.Close()
_, err = buf.WriteTo(stream)
if err != nil {
return
}
default: // native
err = q.quicConn.SendMessage(buf.Bytes())
if err != nil {
return
}
}
n = len(p)
return
}
func (q *quicStreamPacketConn) LocalAddr() net.Addr {
return q.lAddr
}
var _ net.PacketConn = &quicStreamPacketConn{}
func NewClient(clientOption *ClientOption, udp bool) *Client {
c := &Client{
ClientOption: clientOption,
@ -558,5 +387,5 @@ func NewClient(clientOption *ClientOption, udp bool) *Client {
}
func closeClient(client *Client) {
client.Close(ClientClosed)
client.forceClose(ClientClosed, false)
}

250
transport/tuic/conn.go Normal file
View file

@ -0,0 +1,250 @@
package tuic
import (
"fmt"
"net"
"net/netip"
"sync"
"time"
"github.com/metacubex/quic-go"
N "github.com/Dreamacro/clash/common/net"
"github.com/Dreamacro/clash/common/pool"
"github.com/Dreamacro/clash/transport/tuic/congestion"
)
func SetCongestionController(quicConn quic.Connection, cc string) {
switch cc {
case "cubic":
quicConn.SetCongestionControl(
congestion.NewCubicSender(
congestion.DefaultClock{},
congestion.GetMaxPacketSize(quicConn.RemoteAddr()),
false,
nil,
),
)
case "new_reno":
quicConn.SetCongestionControl(
congestion.NewCubicSender(
congestion.DefaultClock{},
congestion.GetMaxPacketSize(quicConn.RemoteAddr()),
true,
nil,
),
)
case "bbr":
quicConn.SetCongestionControl(
congestion.NewBBRSender(
congestion.DefaultClock{},
congestion.GetMaxPacketSize(quicConn.RemoteAddr()),
congestion.InitialCongestionWindow,
congestion.DefaultBBRMaxCongestionWindow,
),
)
}
}
type quicStreamConn struct {
quic.Stream
lock sync.Mutex
lAddr net.Addr
rAddr net.Addr
ref any
closeDeferFn func()
closeOnce sync.Once
closeErr error
}
func (q *quicStreamConn) Write(p []byte) (n int, err error) {
q.lock.Lock()
defer q.lock.Unlock()
return q.Stream.Write(p)
}
func (q *quicStreamConn) Close() error {
q.closeOnce.Do(func() {
q.closeErr = q.close()
})
return q.closeErr
}
func (q *quicStreamConn) close() error {
if q.closeDeferFn != nil {
defer q.closeDeferFn()
}
// https://github.com/cloudflare/cloudflared/commit/ed2bac026db46b239699ac5ce4fcf122d7cab2cd
// Make sure a possible writer does not block the lock forever. We need it, so we can close the writer
// side of the stream safely.
_ = q.Stream.SetWriteDeadline(time.Now())
// This lock is eventually acquired despite Write also acquiring it, because we set a deadline to writes.
q.lock.Lock()
defer q.lock.Unlock()
// We have to clean up the receiving stream ourselves since the Close in the bottom does not handle that.
q.Stream.CancelRead(0)
return q.Stream.Close()
}
func (q *quicStreamConn) LocalAddr() net.Addr {
return q.lAddr
}
func (q *quicStreamConn) RemoteAddr() net.Addr {
return q.rAddr
}
var _ net.Conn = &quicStreamConn{}
type quicStreamPacketConn struct {
connId uint32
quicConn quic.Connection
lAddr net.Addr
inputConn *N.BufferedConn
udpRelayMode string
maxUdpRelayPacketSize int
ref any
deferQuicConnFn func(quicConn quic.Connection, err error)
closeDeferFn func()
closeOnce sync.Once
closeErr error
closed bool
}
func (q *quicStreamPacketConn) Close() error {
q.closeOnce.Do(func() {
q.closed = true
q.closeErr = q.close()
})
return q.closeErr
}
func (q *quicStreamPacketConn) close() (err error) {
if q.closeDeferFn != nil {
defer q.closeDeferFn()
}
defer func() {
if q.deferQuicConnFn != nil {
q.deferQuicConnFn(q.quicConn, err)
}
}()
if q.inputConn != nil {
_ = q.inputConn.Close()
q.inputConn = nil
buf := pool.GetBuffer()
defer pool.PutBuffer(buf)
err = NewDissociate(q.connId).WriteTo(buf)
if err != nil {
return
}
var stream quic.SendStream
stream, err = q.quicConn.OpenUniStream()
if err != nil {
return
}
_, err = buf.WriteTo(stream)
if err != nil {
return
}
err = stream.Close()
if err != nil {
return
}
}
return
}
func (q *quicStreamPacketConn) SetDeadline(t time.Time) error {
//TODO implement me
return nil
}
func (q *quicStreamPacketConn) SetReadDeadline(t time.Time) error {
if q.inputConn != nil {
return q.inputConn.SetReadDeadline(t)
}
return nil
}
func (q *quicStreamPacketConn) SetWriteDeadline(t time.Time) error {
//TODO implement me
return nil
}
func (q *quicStreamPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
if q.inputConn != nil {
var packet Packet
packet, err = ReadPacket(q.inputConn)
if err != nil {
return
}
n = copy(p, packet.DATA)
addr = packet.ADDR.UDPAddr()
} else {
err = net.ErrClosed
}
return
}
func (q *quicStreamPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
if len(p) > q.maxUdpRelayPacketSize {
return 0, fmt.Errorf("udp packet too large(%d > %d)", len(p), q.maxUdpRelayPacketSize)
}
if q.closed {
return 0, net.ErrClosed
}
defer func() {
if q.deferQuicConnFn != nil {
q.deferQuicConnFn(q.quicConn, err)
}
}()
addr.String()
buf := pool.GetBuffer()
defer pool.PutBuffer(buf)
addrPort, err := netip.ParseAddrPort(addr.String())
if err != nil {
return
}
err = NewPacket(q.connId, uint16(len(p)), NewAddressAddrPort(addrPort), p).WriteTo(buf)
if err != nil {
return
}
switch q.udpRelayMode {
case "quic":
var stream quic.SendStream
stream, err = q.quicConn.OpenUniStream()
if err != nil {
return
}
defer stream.Close()
_, err = buf.WriteTo(stream)
if err != nil {
return
}
default: // native
err = q.quicConn.SendMessage(buf.Bytes())
if err != nil {
return
}
}
n = len(p)
return
}
func (q *quicStreamPacketConn) LocalAddr() net.Addr {
return q.lAddr
}
var _ net.PacketConn = &quicStreamPacketConn{}

5
transport/tuic/pool_client.go
View file

@ -75,7 +75,7 @@ func (t *PoolClient) dial(ctx context.Context, opts ...dialer.Option) (pc net.Pa
return pc, addr, err
}
func (t *PoolClient) Close() {
func (t *PoolClient) forceClose() {
t.dialResultMutex.Lock()
defer t.dialResultMutex.Unlock()
for key := range t.dialResultMap {
@ -141,6 +141,7 @@ func (t *PoolClient) getClient(udp bool, opts ...dialer.Option) *Client {
}
}
if client.openStreams.Load() == 0 && time.Now().Sub(client.lastVisited) > 30*time.Minute {
client.Close()
next := it.Next()
clients.Remove(it)
it = next
@ -173,5 +174,5 @@ func NewClientPool(clientOption *ClientOption) *PoolClient {
}
func closeClientPool(client *PoolClient) {
client.Close()
client.forceClose()
}

88
transport/tuic/protocol.go
View file

@ -112,6 +112,29 @@ func NewAuthenticate(TKN [32]byte) Authenticate {
}
}
func ReadAuthenticateWithHead(head CommandHead, reader BufferedReader) (c Authenticate, err error) {
c.CommandHead = head
if err != nil {
return
}
if c.CommandHead.TYPE != AuthenticateType {
err = fmt.Errorf("error command type: %s", c.CommandHead.TYPE)
}
_, err = io.ReadFull(reader, c.TKN[:])
if err != nil {
return
}
return
}
func ReadAuthenticate(reader BufferedReader) (c Authenticate, err error) {
head, err := ReadCommandHead(reader)
if err != nil {
return
}
return ReadAuthenticateWithHead(head, reader)
}
func GenTKN(token string) [32]byte {
return blake3.Sum256([]byte(token))
}
@ -144,6 +167,29 @@ func NewConnect(ADDR Address) Connect {
}
}
func ReadConnectWithHead(head CommandHead, reader BufferedReader) (c Connect, err error) {
c.CommandHead = head
if err != nil {
return
}
if c.CommandHead.TYPE != ConnectType {
err = fmt.Errorf("error command type: %s", c.CommandHead.TYPE)
}
c.ADDR, err = ReadAddress(reader)
if err != nil {
return
}
return
}
func ReadConnect(reader BufferedReader) (c Connect, err error) {
head, err := ReadCommandHead(reader)
if err != nil {
return
}
return ReadConnectWithHead(head, reader)
}
func (c Connect) WriteTo(writer BufferedWriter) (err error) {
err = c.CommandHead.WriteTo(writer)
if err != nil {
@ -254,6 +300,29 @@ func NewDissociate(ASSOC_ID uint32) Dissociate {
}
}
func ReadDissociateWithHead(head CommandHead, reader BufferedReader) (c Dissociate, err error) {
c.CommandHead = head
if err != nil {
return
}
if c.CommandHead.TYPE != PacketType {
err = fmt.Errorf("error command type: %s", c.CommandHead.TYPE)
}
err = binary.Read(reader, binary.BigEndian, &c.ASSOC_ID)
if err != nil {
return
}
return
}
func ReadDissociate(reader BufferedReader) (c Dissociate, err error) {
head, err := ReadCommandHead(reader)
if err != nil {
return
}
return ReadDissociateWithHead(head, reader)
}
func (c Dissociate) WriteTo(writer BufferedWriter) (err error) {
err = c.CommandHead.WriteTo(writer)
if err != nil {
@ -308,6 +377,14 @@ func NewResponse(REP byte) Response {
}
}
func NewResponseSucceed() Response {
return NewResponse(0x00)
}
func NewResponseFailed() Response {
return NewResponse(0xff)
}
func ReadResponseWithHead(head CommandHead, reader BufferedReader) (c Response, err error) {
c.CommandHead = head
if c.CommandHead.TYPE != ResponseType {
@ -466,6 +543,17 @@ func (c Address) WriteTo(writer BufferedWriter) (err error) {
return
}
func (c Address) String() string {
switch c.TYPE {
case AtypDomainName:
return net.JoinHostPort(string(c.ADDR[1:]), strconv.Itoa(int(c.PORT)))
default:
addr, _ := netip.AddrFromSlice(c.ADDR)
addrPort := netip.AddrPortFrom(addr, c.PORT)
return addrPort.String()
}
}
func (c Address) UDPAddr() *net.UDPAddr {
return &net.UDPAddr{
IP: c.ADDR,

292
transport/tuic/server.go Normal file
View file

@ -0,0 +1,292 @@
package tuic
import (
"bufio"
"bytes"
"context"
"crypto/tls"
"fmt"
"net"
"sync"
"time"
"github.com/gofrs/uuid"
"github.com/metacubex/quic-go"
N "github.com/Dreamacro/clash/common/net"
"github.com/Dreamacro/clash/common/pool"
C "github.com/Dreamacro/clash/constant"
)
type ServerOption struct {
HandleTcpFn func(conn net.Conn, addr string) error
HandleUdpFn func(addr *net.UDPAddr, packet C.UDPPacket) error
TlsConfig *tls.Config
QuicConfig *quic.Config
Tokens [][32]byte
CongestionController string
AuthenticationTimeout time.Duration
MaxUdpRelayPacketSize int
}
type Server struct {
*ServerOption
listener quic.EarlyListener
}
func NewServer(option *ServerOption, pc net.PacketConn) (*Server, error) {
listener, err := quic.ListenEarly(pc, option.TlsConfig, option.QuicConfig)
if err != nil {
return nil, err
}
return &Server{
ServerOption: option,
listener: listener,
}, err
}
func (s *Server) Serve() error {
for {
conn, err := s.listener.Accept(context.Background())
if err != nil {
return err
}
uuid, err := uuid.NewV4()
if err != nil {
return err
}
h := &serverHandler{
Server: s,
quicConn: conn,
uuid: uuid,
authCh: make(chan struct{}),
}
go h.handle()
}
}
func (s *Server) Close() error {
return s.listener.Close()
}
type serverHandler struct {
*Server
quicConn quic.Connection
uuid uuid.UUID
authCh chan struct{}
authOk bool
authOnce sync.Once
}
func (s *serverHandler) handle() {
time.AfterFunc(s.AuthenticationTimeout, func() {
s.authOnce.Do(func() {
_ = s.quicConn.CloseWithError(AuthenticationTimeout, "")
s.authOk = false
close(s.authCh)
})
})
go func() {
_ = s.handleUniStream()
}()
go func() {
_ = s.handleStream()
}()
go func() {
_ = s.handleMessage()
}()
}
func (s *serverHandler) handleMessage() (err error) {
for {
var message []byte
message, err = s.quicConn.ReceiveMessage()
if err != nil {
return err
}
go func() (err error) {
buffer := bytes.NewBuffer(message)
packet, err := ReadPacket(buffer)
if err != nil {
return
}
return s.parsePacket(packet, "native")
}()
}
}
func (s *serverHandler) parsePacket(packet Packet, udpRelayMode string) (err error) {
<-s.authCh
if !s.authOk {
return
}
var assocId uint32
assocId = packet.ASSOC_ID
pc := &quicStreamPacketConn{
connId: assocId,
quicConn: s.quicConn,
lAddr: s.quicConn.LocalAddr(),
inputConn: nil,
udpRelayMode: udpRelayMode,
maxUdpRelayPacketSize: s.MaxUdpRelayPacketSize,
ref: s,
deferQuicConnFn: nil,
closeDeferFn: nil,
}
return s.HandleUdpFn(packet.ADDR.UDPAddr(), &serverUDPPacket{
pc: pc,
packet: &packet,
rAddr: s.genServerAssocIdAddr(assocId),
})
}
func (s *serverHandler) genServerAssocIdAddr(assocId uint32) net.Addr {
return ServerAssocIdAddr(fmt.Sprintf("tuic-%s-%d", s.uuid.String(), assocId))
}
func (s *serverHandler) handleStream() (err error) {
for {
var quicStream quic.Stream
quicStream, err = s.quicConn.AcceptStream(context.Background())
if err != nil {
return err
}
go func() (err error) {
stream := &quicStreamConn{
Stream: quicStream,
lAddr: s.quicConn.LocalAddr(),
rAddr: s.quicConn.RemoteAddr(),
ref: s,
}
conn := N.NewBufferedConn(stream)
connect, err := ReadConnect(conn)
if err != nil {
return err
}
<-s.authCh
if !s.authOk {
return conn.Close()
}
buf := pool.GetBuffer()
defer pool.PutBuffer(buf)
err = s.HandleTcpFn(conn, connect.ADDR.String())
if err != nil {
err = NewResponseFailed().WriteTo(buf)
}
err = NewResponseSucceed().WriteTo(buf)
if err != nil {
_ = conn.Close()
return err
}
_, err = buf.WriteTo(stream)
if err != nil {
_ = conn.Close()
return err
}
return
}()
}
}
func (s *serverHandler) handleUniStream() (err error) {
for {
var stream quic.ReceiveStream
stream, err = s.quicConn.AcceptUniStream(context.Background())
if err != nil {
return err
}
go func() (err error) {
defer func() {
stream.CancelRead(0)
}()
reader := bufio.NewReader(stream)
commandHead, err := ReadCommandHead(reader)
if err != nil {
return
}
switch commandHead.TYPE {
case AuthenticateType:
var authenticate Authenticate
authenticate, err = ReadAuthenticateWithHead(commandHead, reader)
if err != nil {
return
}
ok := false
for _, tkn := range s.Tokens {
if authenticate.TKN == tkn {
ok = true
break
}
}
s.authOnce.Do(func() {
if !ok {
_ = s.quicConn.CloseWithError(AuthenticationFailed, "")
}
s.authOk = ok
close(s.authCh)
})
case PacketType:
var packet Packet
packet, err = ReadPacketWithHead(commandHead, reader)
if err != nil {
return
}
return s.parsePacket(packet, "quic")
case DissociateType:
var disassociate Dissociate
disassociate, err = ReadDissociateWithHead(commandHead, reader)
if err != nil {
return
}
disassociate.BytesLen()
}
return
}()
}
}
type ServerAssocIdAddr string
func (a ServerAssocIdAddr) Network() string {
return "ServerAssocIdAddr"
}
func (a ServerAssocIdAddr) String() string {
return string(a)
}
type serverUDPPacket struct {
pc *quicStreamPacketConn
packet *Packet
rAddr net.Addr
}
func (s *serverUDPPacket) InAddr() net.Addr {
return s.pc.LocalAddr()
}
func (s *serverUDPPacket) LocalAddr() net.Addr {
return s.rAddr
}
func (s *serverUDPPacket) Data() []byte {
return s.packet.DATA
}
func (s *serverUDPPacket) WriteBack(b []byte, addr net.Addr) (n int, err error) {
return s.pc.WriteTo(b, addr)
}
func (s *serverUDPPacket) Drop() {
s.packet.DATA = nil
}
var _ C.UDPPacket = &serverUDPPacket{}
var _ C.UDPPacketInAddr = &serverUDPPacket{}