mirror of
https://github.com/SagerNet/sing-box.git
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100 lines
2.4 KiB
Go
100 lines
2.4 KiB
Go
//go:build with_quic
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package v2rayquic
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import (
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"context"
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"net"
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"os"
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"github.com/sagernet/quic-go"
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"github.com/sagernet/quic-go/http3"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/tls"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing-quic"
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"github.com/sagernet/sing/common"
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E "github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/logger"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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)
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var _ adapter.V2RayServerTransport = (*Server)(nil)
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type Server struct {
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ctx context.Context
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logger logger.ContextLogger
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tlsConfig tls.ServerConfig
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quicConfig *quic.Config
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handler adapter.V2RayServerTransportHandler
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udpListener net.PacketConn
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quicListener qtls.Listener
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}
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func NewServer(ctx context.Context, logger logger.ContextLogger, options option.V2RayQUICOptions, tlsConfig tls.ServerConfig, handler adapter.V2RayServerTransportHandler) (adapter.V2RayServerTransport, error) {
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quicConfig := &quic.Config{
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DisablePathMTUDiscovery: !C.IsLinux && !C.IsWindows,
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}
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if len(tlsConfig.NextProtos()) == 0 {
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tlsConfig.SetNextProtos([]string{http3.NextProtoH3})
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}
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server := &Server{
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ctx: ctx,
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logger: logger,
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tlsConfig: tlsConfig,
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quicConfig: quicConfig,
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handler: handler,
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}
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return server, nil
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}
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func (s *Server) Network() []string {
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return []string{N.NetworkUDP}
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}
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func (s *Server) Serve(listener net.Listener) error {
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return os.ErrInvalid
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}
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func (s *Server) ServePacket(listener net.PacketConn) error {
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quicListener, err := qtls.Listen(listener, s.tlsConfig, s.quicConfig)
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if err != nil {
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return err
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}
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s.udpListener = listener
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s.quicListener = quicListener
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go s.acceptLoop()
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return nil
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}
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func (s *Server) acceptLoop() {
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for {
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conn, err := s.quicListener.Accept(s.ctx)
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if err != nil {
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return
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}
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go func() {
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hErr := s.streamAcceptLoop(conn)
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if hErr != nil && !E.IsClosedOrCanceled(hErr) {
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s.logger.ErrorContext(conn.Context(), hErr)
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}
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}()
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}
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}
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func (s *Server) streamAcceptLoop(conn quic.Connection) error {
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for {
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stream, err := conn.AcceptStream(s.ctx)
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if err != nil {
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return err
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}
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go s.handler.NewConnectionEx(conn.Context(), &StreamWrapper{Conn: conn, Stream: stream}, M.SocksaddrFromNet(conn.RemoteAddr()), M.Socksaddr{}, nil)
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}
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}
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func (s *Server) Close() error {
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return common.Close(s.udpListener, s.quicListener)
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}
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