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chore: tuic server can handle V4 and V5 in same port
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,234 @@ | ||
| package tuic | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "context" | ||
| "crypto/tls" | ||
| "net" | ||
| "time" | ||
|
|
||
| "github.com/Dreamacro/clash/adapter/inbound" | ||
| N "github.com/Dreamacro/clash/common/net" | ||
| "github.com/Dreamacro/clash/common/utils" | ||
| C "github.com/Dreamacro/clash/constant" | ||
| "github.com/Dreamacro/clash/transport/socks5" | ||
| "github.com/Dreamacro/clash/transport/tuic/common" | ||
| v4 "github.com/Dreamacro/clash/transport/tuic/v4" | ||
| v5 "github.com/Dreamacro/clash/transport/tuic/v5" | ||
|
|
||
| "github.com/gofrs/uuid/v5" | ||
| "github.com/metacubex/quic-go" | ||
| ) | ||
|
|
||
| type ServerOption struct { | ||
| HandleTcpFn func(conn net.Conn, addr socks5.Addr, additions ...inbound.Addition) error | ||
| HandleUdpFn func(addr socks5.Addr, packet C.UDPPacket, additions ...inbound.Addition) error | ||
|
|
||
| TlsConfig *tls.Config | ||
| QuicConfig *quic.Config | ||
| Tokens [][32]byte // V4 special | ||
| Users map[[16]byte]string // V5 special | ||
| CongestionController string | ||
| AuthenticationTimeout time.Duration | ||
| MaxUdpRelayPacketSize int | ||
| CWND int | ||
| } | ||
|
|
||
| type Server struct { | ||
| *ServerOption | ||
| optionV4 *v4.ServerOption | ||
| optionV5 *v5.ServerOption | ||
| listener *quic.EarlyListener | ||
| } | ||
|
|
||
| func (s *Server) Serve() error { | ||
| for { | ||
| conn, err := s.listener.Accept(context.Background()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| common.SetCongestionController(conn, s.CongestionController, s.CWND) | ||
| h := &serverHandler{ | ||
| Server: s, | ||
| quicConn: conn, | ||
| uuid: utils.NewUUIDV4(), | ||
| } | ||
| if h.optionV4 != nil { | ||
| h.v4Handler = v4.NewServerHandler(h.optionV4, conn, h.uuid) | ||
| } | ||
| if h.optionV5 != nil { | ||
| h.v5Handler = v5.NewServerHandler(h.optionV5, conn, h.uuid) | ||
| } | ||
| go h.handle() | ||
| } | ||
| } | ||
|
|
||
| func (s *Server) Close() error { | ||
| return s.listener.Close() | ||
| } | ||
|
|
||
| type serverHandler struct { | ||
| *Server | ||
| quicConn quic.EarlyConnection | ||
| uuid uuid.UUID | ||
|
|
||
| v4Handler common.ServerHandler | ||
| v5Handler common.ServerHandler | ||
| } | ||
|
|
||
| func (s *serverHandler) handle() { | ||
| go func() { | ||
| _ = s.handleUniStream() | ||
| }() | ||
| go func() { | ||
| _ = s.handleStream() | ||
| }() | ||
| go func() { | ||
| _ = s.handleMessage() | ||
| }() | ||
|
|
||
| <-s.quicConn.HandshakeComplete() | ||
| time.AfterFunc(s.AuthenticationTimeout, func() { | ||
| if s.v4Handler != nil { | ||
| if s.v4Handler.AuthOk() { | ||
| return | ||
| } | ||
| } | ||
|
|
||
| if s.v5Handler != nil { | ||
| if s.v5Handler.AuthOk() { | ||
| return | ||
| } | ||
| } | ||
|
|
||
| if s.v4Handler != nil { | ||
| s.v4Handler.HandleTimeout() | ||
| } | ||
|
|
||
| if s.v5Handler != nil { | ||
| s.v5Handler.HandleTimeout() | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| func (s *serverHandler) handleMessage() (err error) { | ||
| for { | ||
| var message []byte | ||
| message, err = s.quicConn.ReceiveMessage() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| go func() (err error) { | ||
| if len(message) > 0 { | ||
| switch message[0] { | ||
| case v4.VER: | ||
| if s.v4Handler != nil { | ||
| return s.v4Handler.HandleMessage(message) | ||
| } | ||
| case v5.VER: | ||
| if s.v5Handler != nil { | ||
| return s.v5Handler.HandleMessage(message) | ||
| } | ||
| } | ||
| } | ||
| return | ||
| }() | ||
| } | ||
| } | ||
|
|
||
| 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 := common.NewQuicStreamConn( | ||
| quicStream, | ||
| s.quicConn.LocalAddr(), | ||
| s.quicConn.RemoteAddr(), | ||
| nil, | ||
| ) | ||
| conn := N.NewBufferedConn(stream) | ||
|
|
||
| verBytes, err := conn.Peek(1) | ||
| if err != nil { | ||
| _ = conn.Close() | ||
| return err | ||
| } | ||
|
|
||
| switch verBytes[0] { | ||
| case v4.VER: | ||
| if s.v4Handler != nil { | ||
| return s.v4Handler.HandleStream(conn) | ||
| } | ||
| case v5.VER: | ||
| if s.v5Handler != nil { | ||
| return s.v5Handler.HandleStream(conn) | ||
| } | ||
| } | ||
| 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) | ||
| verBytes, err := reader.Peek(1) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| switch verBytes[0] { | ||
| case v4.VER: | ||
| if s.v4Handler != nil { | ||
| return s.v4Handler.HandleUniStream(reader) | ||
| } | ||
| case v5.VER: | ||
| if s.v5Handler != nil { | ||
| return s.v5Handler.HandleUniStream(reader) | ||
| } | ||
| } | ||
| return | ||
| }() | ||
| } | ||
| } | ||
|
|
||
| func NewServer(option *ServerOption, pc net.PacketConn) (*Server, error) { | ||
| listener, err := quic.ListenEarly(pc, option.TlsConfig, option.QuicConfig) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| server := &Server{ | ||
| ServerOption: option, | ||
| listener: listener, | ||
| } | ||
| if len(option.Tokens) > 0 { | ||
| server.optionV4 = &v4.ServerOption{ | ||
| HandleTcpFn: option.HandleTcpFn, | ||
| HandleUdpFn: option.HandleUdpFn, | ||
| Tokens: option.Tokens, | ||
| MaxUdpRelayPacketSize: option.MaxUdpRelayPacketSize, | ||
| } | ||
| } | ||
| if len(option.Users) > 0 { | ||
| server.optionV5 = &v5.ServerOption{ | ||
| HandleTcpFn: option.HandleTcpFn, | ||
| HandleUdpFn: option.HandleUdpFn, | ||
| Users: option.Users, | ||
| MaxUdpRelayPacketSize: option.MaxUdpRelayPacketSize, | ||
| } | ||
| } | ||
| return server, nil | ||
| } |
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