mirror of
https://github.com/MetaCubeX/mihomo.git
synced 2024-09-12 11:52:33 +00:00
297 lines
8.2 KiB
Go
297 lines
8.2 KiB
Go
package outbound
|
|
|
|
import (
|
|
"context"
|
|
"crypto/sha256"
|
|
"crypto/tls"
|
|
"encoding/hex"
|
|
"encoding/pem"
|
|
"errors"
|
|
"fmt"
|
|
"net"
|
|
"os"
|
|
"runtime"
|
|
"strconv"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/metacubex/quic-go"
|
|
|
|
"github.com/Dreamacro/clash/common/generics/list"
|
|
"github.com/Dreamacro/clash/component/dialer"
|
|
tlsC "github.com/Dreamacro/clash/component/tls"
|
|
C "github.com/Dreamacro/clash/constant"
|
|
"github.com/Dreamacro/clash/transport/tuic"
|
|
)
|
|
|
|
type Tuic struct {
|
|
*Base
|
|
newClient func(udp bool, opts ...dialer.Option) *tuic.Client
|
|
getClient func(udp bool, opts ...dialer.Option) *tuic.Client
|
|
}
|
|
|
|
type TuicOption struct {
|
|
BasicOption
|
|
Name string `proxy:"name"`
|
|
Server string `proxy:"server"`
|
|
Port int `proxy:"port"`
|
|
Token string `proxy:"token"`
|
|
Ip string `proxy:"ip,omitempty"`
|
|
HeartbeatInterval int `proxy:"heartbeat_interval,omitempty"`
|
|
ALPN []string `proxy:"alpn,omitempty"`
|
|
ReduceRtt bool `proxy:"reduce_rtt,omitempty"`
|
|
RequestTimeout int `proxy:"request_timeout,omitempty"`
|
|
UdpRelayMode string `proxy:"udp_relay_mode,omitempty"`
|
|
CongestionController string `proxy:"congestion_controller,omitempty"`
|
|
DisableSni bool `proxy:"disable_sni,omitempty"`
|
|
MaxUdpRelayPacketSize int `proxy:"max_udp_relay_packet_size,omitempty"`
|
|
|
|
SkipCertVerify bool `proxy:"skip-cert-verify,omitempty"`
|
|
Fingerprint string `proxy:"fingerprint,omitempty"`
|
|
CustomCA string `proxy:"ca,omitempty"`
|
|
CustomCAString string `proxy:"ca_str,omitempty"`
|
|
ReceiveWindowConn int `proxy:"recv_window_conn,omitempty"`
|
|
ReceiveWindow int `proxy:"recv_window,omitempty"`
|
|
DisableMTUDiscovery bool `proxy:"disable_mtu_discovery,omitempty"`
|
|
}
|
|
|
|
// DialContext implements C.ProxyAdapter
|
|
func (t *Tuic) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
|
|
opts = t.Base.DialOptions(opts...)
|
|
dialFn := func(ctx context.Context) (net.PacketConn, net.Addr, error) {
|
|
pc, err := dialer.ListenPacket(ctx, "udp", "", opts...)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
addr, err := resolveUDPAddrWithPrefer(ctx, "udp", t.addr, t.prefer)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
return pc, addr, err
|
|
}
|
|
conn, err := t.getClient(false, opts...).DialContext(ctx, metadata, dialFn)
|
|
if errors.Is(err, tuic.TooManyOpenStreams) {
|
|
conn, err = t.newClient(false, opts...).DialContext(ctx, metadata, dialFn)
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return NewConn(conn, t), err
|
|
}
|
|
|
|
// ListenPacketContext implements C.ProxyAdapter
|
|
func (t *Tuic) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
|
|
opts = t.Base.DialOptions(opts...)
|
|
dialFn := func(ctx context.Context) (net.PacketConn, net.Addr, error) {
|
|
pc, err := dialer.ListenPacket(ctx, "udp", "", opts...)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
addr, err := resolveUDPAddrWithPrefer(ctx, "udp", t.addr, t.prefer)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
return pc, addr, err
|
|
}
|
|
pc, err := t.getClient(true, opts...).ListenPacketContext(ctx, metadata, dialFn)
|
|
if errors.Is(err, tuic.TooManyOpenStreams) {
|
|
pc, err = t.newClient(false, opts...).ListenPacketContext(ctx, metadata, dialFn)
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return newPacketConn(pc, t), nil
|
|
}
|
|
|
|
func NewTuic(option TuicOption) (*Tuic, error) {
|
|
addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
|
|
serverName := option.Server
|
|
|
|
tlsConfig := &tls.Config{
|
|
ServerName: serverName,
|
|
InsecureSkipVerify: option.SkipCertVerify,
|
|
MinVersion: tls.VersionTLS13,
|
|
}
|
|
|
|
var bs []byte
|
|
var err error
|
|
if len(option.CustomCA) > 0 {
|
|
bs, err = os.ReadFile(option.CustomCA)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("tuic %s load ca error: %w", addr, err)
|
|
}
|
|
} else if option.CustomCAString != "" {
|
|
bs = []byte(option.CustomCAString)
|
|
}
|
|
|
|
if len(bs) > 0 {
|
|
block, _ := pem.Decode(bs)
|
|
if block == nil {
|
|
return nil, fmt.Errorf("CA cert is not PEM")
|
|
}
|
|
|
|
fpBytes := sha256.Sum256(block.Bytes)
|
|
if len(option.Fingerprint) == 0 {
|
|
option.Fingerprint = hex.EncodeToString(fpBytes[:])
|
|
}
|
|
}
|
|
|
|
if len(option.Fingerprint) != 0 {
|
|
var err error
|
|
tlsConfig, err = tlsC.GetSpecifiedFingerprintTLSConfig(tlsConfig, option.Fingerprint)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
} else {
|
|
tlsConfig = tlsC.GetGlobalFingerprintTLCConfig(tlsConfig)
|
|
}
|
|
|
|
if len(option.ALPN) > 0 {
|
|
tlsConfig.NextProtos = option.ALPN
|
|
} else {
|
|
tlsConfig.NextProtos = []string{"h3"}
|
|
}
|
|
|
|
if option.RequestTimeout == 0 {
|
|
option.RequestTimeout = 8000
|
|
}
|
|
|
|
if option.HeartbeatInterval <= 0 {
|
|
option.HeartbeatInterval = 10000
|
|
}
|
|
|
|
if option.UdpRelayMode != "quic" {
|
|
option.UdpRelayMode = "native"
|
|
}
|
|
|
|
if option.MaxUdpRelayPacketSize == 0 {
|
|
option.MaxUdpRelayPacketSize = 1500
|
|
}
|
|
|
|
quicConfig := &quic.Config{
|
|
InitialStreamReceiveWindow: uint64(option.ReceiveWindowConn),
|
|
MaxStreamReceiveWindow: uint64(option.ReceiveWindowConn),
|
|
InitialConnectionReceiveWindow: uint64(option.ReceiveWindow),
|
|
MaxConnectionReceiveWindow: uint64(option.ReceiveWindow),
|
|
KeepAlivePeriod: time.Duration(option.HeartbeatInterval) * time.Millisecond,
|
|
DisablePathMTUDiscovery: option.DisableMTUDiscovery,
|
|
EnableDatagrams: true,
|
|
}
|
|
if option.ReceiveWindowConn == 0 {
|
|
quicConfig.InitialStreamReceiveWindow = DefaultStreamReceiveWindow / 10
|
|
quicConfig.MaxStreamReceiveWindow = DefaultStreamReceiveWindow
|
|
}
|
|
if option.ReceiveWindow == 0 {
|
|
quicConfig.InitialConnectionReceiveWindow = DefaultConnectionReceiveWindow / 10
|
|
quicConfig.MaxConnectionReceiveWindow = DefaultConnectionReceiveWindow
|
|
}
|
|
|
|
if len(option.Ip) > 0 {
|
|
addr = net.JoinHostPort(option.Ip, strconv.Itoa(option.Port))
|
|
}
|
|
host := option.Server
|
|
if option.DisableSni {
|
|
host = ""
|
|
tlsConfig.ServerName = ""
|
|
}
|
|
tkn := tuic.GenTKN(option.Token)
|
|
tcpClients := list.New[*tuic.Client]()
|
|
tcpClientsMutex := &sync.Mutex{}
|
|
udpClients := list.New[*tuic.Client]()
|
|
udpClientsMutex := &sync.Mutex{}
|
|
newClient := func(udp bool, opts ...dialer.Option) *tuic.Client {
|
|
clients := tcpClients
|
|
clientsMutex := tcpClientsMutex
|
|
if udp {
|
|
clients = udpClients
|
|
clientsMutex = udpClientsMutex
|
|
}
|
|
|
|
var o any = *dialer.ApplyOptions(opts...)
|
|
|
|
clientsMutex.Lock()
|
|
defer clientsMutex.Unlock()
|
|
|
|
client := &tuic.Client{
|
|
TlsConfig: tlsConfig,
|
|
QuicConfig: quicConfig,
|
|
Host: host,
|
|
Token: tkn,
|
|
UdpRelayMode: option.UdpRelayMode,
|
|
CongestionController: option.CongestionController,
|
|
ReduceRtt: option.ReduceRtt,
|
|
RequestTimeout: option.RequestTimeout,
|
|
MaxUdpRelayPacketSize: option.MaxUdpRelayPacketSize,
|
|
Key: o,
|
|
LastVisited: time.Now(),
|
|
UDP: udp,
|
|
}
|
|
clients.PushFront(client)
|
|
runtime.SetFinalizer(client, closeTuicClient)
|
|
return client
|
|
}
|
|
getClient := func(udp bool, opts ...dialer.Option) *tuic.Client {
|
|
clients := tcpClients
|
|
clientsMutex := tcpClientsMutex
|
|
if udp {
|
|
clients = udpClients
|
|
clientsMutex = udpClientsMutex
|
|
}
|
|
|
|
var o any = *dialer.ApplyOptions(opts...)
|
|
var bestClient *tuic.Client
|
|
|
|
func() {
|
|
clientsMutex.Lock()
|
|
defer clientsMutex.Unlock()
|
|
for it := clients.Front(); it != nil; {
|
|
client := it.Value
|
|
if client == nil {
|
|
next := it.Next()
|
|
clients.Remove(it)
|
|
it = next
|
|
continue
|
|
}
|
|
if client.Key == o {
|
|
if bestClient == nil {
|
|
bestClient = client
|
|
} else {
|
|
if client.OpenStreams.Load() < bestClient.OpenStreams.Load() {
|
|
bestClient = client
|
|
}
|
|
}
|
|
}
|
|
if time.Now().Sub(client.LastVisited) > 30*time.Minute {
|
|
next := it.Next()
|
|
clients.Remove(it)
|
|
it = next
|
|
continue
|
|
}
|
|
it = it.Next()
|
|
}
|
|
}()
|
|
|
|
if bestClient == nil {
|
|
return newClient(udp, opts...)
|
|
} else {
|
|
return bestClient
|
|
}
|
|
}
|
|
|
|
return &Tuic{
|
|
Base: &Base{
|
|
name: option.Name,
|
|
addr: addr,
|
|
tp: C.Tuic,
|
|
udp: true,
|
|
iface: option.Interface,
|
|
prefer: C.NewDNSPrefer(option.IPVersion),
|
|
},
|
|
newClient: newClient,
|
|
getClient: getClient,
|
|
}, nil
|
|
}
|
|
|
|
func closeTuicClient(client *tuic.Client) {
|
|
client.Close(tuic.ClientClosed)
|
|
}
|