示例#1
0
func init() {
	common.Must(internet.RegisterTransportDialer(internet.TransportProtocol_UDP,
		func(ctx context.Context, dest v2net.Destination) (internet.Connection, error) {
			src := internet.DialerSourceFromContext(ctx)
			conn, err := internet.DialSystem(src, dest)
			if err != nil {
				return nil, err
			}
			// TODO: handle dialer options
			return internal.NewConnection(internal.NewConnectionID(src, dest), conn, internal.NoOpConnectionRecyler{}, internal.ReuseConnection(false)), nil
		}))
}
示例#2
0
func DialKCP(ctx context.Context, dest v2net.Destination) (internet.Connection, error) {
	dest.Network = v2net.Network_UDP
	log.Info("KCP|Dialer: Dialing KCP to ", dest)

	src := internet.DialerSourceFromContext(ctx)
	id := internal.NewConnectionID(src, dest)
	conn := globalPool.Get(id)
	if conn == nil {
		rawConn, err := internet.DialSystem(src, dest)
		if err != nil {
			log.Error("KCP|Dialer: Failed to dial to dest: ", err)
			return nil, err
		}
		c := &ClientConnection{
			Conn: rawConn,
			id:   id,
		}
		go c.Run()
		conn = c
	}

	kcpSettings := internet.TransportSettingsFromContext(ctx).(*Config)

	clientConn := conn.(*ClientConnection)
	header, err := kcpSettings.GetPackerHeader()
	if err != nil {
		return nil, errors.Base(err).Message("KCP|Dialer: Failed to create packet header.")
	}
	security, err := kcpSettings.GetSecurity()
	if err != nil {
		return nil, errors.Base(err).Message("KCP|Dialer: Failed to create security.")
	}
	clientConn.ResetSecurity(header, security)
	conv := uint16(atomic.AddUint32(&globalConv, 1))
	session := NewConnection(conv, clientConn, globalPool, kcpSettings)

	var iConn internet.Connection
	iConn = session

	if securitySettings := internet.SecuritySettingsFromContext(ctx); securitySettings != nil {
		switch securitySettings := securitySettings.(type) {
		case *v2tls.Config:
			config := securitySettings.GetTLSConfig()
			if dest.Address.Family().IsDomain() {
				config.ServerName = dest.Address.Domain()
			}
			tlsConn := tls.Client(iConn, config)
			iConn = UnreusableConnection{Conn: tlsConn}
		}
	}

	return iConn, nil
}
示例#3
0
func Dial(ctx context.Context, dest v2net.Destination) (internet.Connection, error) {
	log.Info("Internet|TCP: Dailing TCP to ", dest)
	src := internet.DialerSourceFromContext(ctx)

	tcpSettings := internet.TransportSettingsFromContext(ctx).(*Config)

	id := internal.NewConnectionID(src, dest)
	var conn net.Conn
	if dest.Network == v2net.Network_TCP && tcpSettings.IsConnectionReuse() {
		conn = globalCache.Get(id)
	}
	if conn == nil {
		var err error
		conn, err = internet.DialSystem(src, dest)
		if err != nil {
			return nil, err
		}
		if securitySettings := internet.SecuritySettingsFromContext(ctx); securitySettings != nil {
			tlsConfig, ok := securitySettings.(*v2tls.Config)
			if ok {
				config := tlsConfig.GetTLSConfig()
				if dest.Address.Family().IsDomain() {
					config.ServerName = dest.Address.Domain()
				}
				conn = tls.Client(conn, config)
			}
		}
		if tcpSettings.HeaderSettings != nil {
			headerConfig, err := tcpSettings.HeaderSettings.GetInstance()
			if err != nil {
				return nil, errors.Base(err).Message("Interent|TCP: Failed to get header settings.")
			}
			auth, err := internet.CreateConnectionAuthenticator(headerConfig)
			if err != nil {
				return nil, errors.Base(err).Message("Internet|TCP: Failed to create header authenticator.")
			}
			conn = auth.Client(conn)
		}
	}
	return internal.NewConnection(id, conn, globalCache, internal.ReuseConnection(tcpSettings.IsConnectionReuse())), nil
}
示例#4
0
func Dial(ctx context.Context, dest v2net.Destination) (internet.Connection, error) {
	log.Info("WebSocket|Dialer: Creating connection to ", dest)
	src := internet.DialerSourceFromContext(ctx)
	wsSettings := internet.TransportSettingsFromContext(ctx).(*Config)

	id := internal.NewConnectionID(src, dest)
	var conn *wsconn
	if dest.Network == v2net.Network_TCP && wsSettings.IsConnectionReuse() {
		connt := globalCache.Get(id)
		if connt != nil {
			conn = connt.(*wsconn)
		}
	}
	if conn == nil {
		var err error
		conn, err = wsDial(ctx, dest)
		if err != nil {
			log.Warning("WebSocket|Dialer: Dial failed: ", err)
			return nil, err
		}
	}
	return internal.NewConnection(id, conn, globalCache, internal.ReuseConnection(wsSettings.IsConnectionReuse())), nil
}
示例#5
0
func (v *Listener) OnReceive(payload *buf.Buffer, src v2net.Destination, originalDest v2net.Destination) {
	defer payload.Release()

	segments := v.reader.Read(payload.Bytes())
	if len(segments) == 0 {
		log.Info("KCP|Listener: discarding invalid payload from ", src)
		return
	}

	if !v.running {
		return
	}
	v.Lock()
	defer v.Unlock()
	if !v.running {
		return
	}
	if payload.Len() < 4 {
		return
	}
	conv := segments[0].Conversation()
	cmd := segments[0].Command()

	id := ConnectionID{
		Remote: src.Address,
		Port:   src.Port,
		Conv:   conv,
	}
	conn, found := v.sessions[id]

	if !found {
		if cmd == CommandTerminate {
			return
		}
		writer := &Writer{
			id:       id,
			hub:      v.hub,
			dest:     src,
			listener: v,
		}
		remoteAddr := &net.UDPAddr{
			IP:   src.Address.IP(),
			Port: int(src.Port),
		}
		localAddr := v.hub.Addr()
		sConn := &ServerConnection{
			id:     internal.NewConnectionID(v2net.LocalHostIP, src),
			local:  localAddr,
			remote: remoteAddr,
			writer: &KCPPacketWriter{
				Header:   v.header,
				Writer:   writer,
				Security: v.security,
			},
			closer: writer,
		}
		conn = NewConnection(conv, sConn, v, v.config)
		select {
		case v.awaitingConns <- conn:
		case <-time.After(time.Second * 5):
			conn.Close()
			return
		}
		v.sessions[id] = conn
	}
	conn.Input(segments)
}