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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" | ||
) | ||
|
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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 | ||
|
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v4Handler common.ServerHandler | ||
v5Handler common.ServerHandler | ||
} | ||
|
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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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