Exemplo n.º 1
0
// NewHost starts a new Host that will listen on the network for incoming
// messages. It will store the private-key.
func NewHost(e *network.ServerIdentity, pkey abstract.Scalar) *Host {
	h := &Host{
		ServerIdentity:      e,
		workingAddress:      e.First(),
		connections:         make(map[network.ServerIdentityID]network.SecureConn),
		pendingTreeMarshal:  make(map[RosterID][]*TreeMarshal),
		pendingSDAs:         make([]*ProtocolMsg, 0),
		host:                network.NewSecureTCPHost(pkey, e),
		private:             pkey,
		suite:               network.Suite,
		networkChan:         make(chan network.Packet, 1),
		isClosing:           false,
		ProcessMessagesQuit: make(chan bool),
	}

	h.overlay = NewOverlay(h)
	h.serviceStore = newServiceStore(h, h.overlay)
	return h
}
Exemplo n.º 2
0
func TestServiceBackForthProtocol(t *testing.T) {
	local := sda.NewLocalTest()
	defer local.CloseAll()

	// register service
	sda.RegisterNewService("BackForth", func(c *sda.Context, path string) sda.Service {
		return &simpleService{
			ctx: c,
		}
	})
	// create hosts
	hosts, el, _ := local.GenTree(4, true, true, false)

	// create client
	priv, pub := sda.PrivPub()
	client := network.NewSecureTCPHost(priv, network.NewServerIdentity(pub, ""))
	c, err := client.Open(hosts[0].ServerIdentity)
	assert.Nil(t, err)
	// create request
	r := &simpleRequest{
		ServerIdentities: el,
		Val:              10,
	}
	buff, err := network.MarshalRegisteredType(r)
	assert.Nil(t, err)

	req := &sda.ClientRequest{
		Service: sda.ServiceFactory.ServiceID("BackForth"),
		Data:    buff,
	}
	assert.Nil(t, c.Send(context.TODO(), req))

	nm, err := c.Receive(context.TODO())
	assert.Nil(t, err)

	assert.Equal(t, nm.MsgType, simpleResponseType)
	resp := nm.Msg.(simpleResponse)
	assert.Equal(t, resp.Val, 10)
}
Exemplo n.º 3
0
// Send opens the connection to 'dst' and sends the message 'req'. The
// reply is returned, or an error if the timeout of 10 seconds is reached.
func (c *Client) Send(dst *network.ServerIdentity, msg network.Body) (*network.Packet, error) {
	c.Lock()
	defer c.Unlock()
	if c.host == nil {
		kp := config.NewKeyPair(network.Suite)
		c.host = network.NewSecureTCPHost(kp.Secret,
			network.NewServerIdentity(kp.Public, ""))
	}

	// Connect to the root
	log.Lvl4("Opening connection to", dst)
	con, err := c.host.Open(dst)
	defer c.host.Close()
	if err != nil {
		return nil, err
	}

	m, err := network.NewNetworkMessage(msg)
	if err != nil {
		return nil, err
	}

	b, err := m.MarshalBinary()
	if err != nil {
		return nil, err
	}

	serviceReq := &ClientRequest{
		Service: c.ServiceID,
		Data:    b,
	}
	pchan := make(chan network.Packet)
	go func() {
		// send the request
		log.Lvlf4("Sending request %x", serviceReq.Service)
		if err := con.Send(context.TODO(), serviceReq); err != nil {
			close(pchan)
			return
		}
		log.Lvl4("Waiting for the response from", reflect.ValueOf(con).Pointer())
		// wait for the response
		packet, err := con.Receive(context.TODO())
		if err != nil {
			packet.Msg = StatusRet{err.Error()}
			packet.MsgType = network.TypeFromData(&StatusRet{})
		}
		pchan <- packet
	}()
	select {
	case response := <-pchan:
		log.Lvlf5("Response: %+v %+v", response, response.Msg)
		// Catch an eventual error
		err := ErrMsg(&response, nil)
		if err != nil {
			return nil, err
		}
		return &response, nil
	case <-time.After(time.Second * 10):
		return &network.Packet{}, errors.New("Timeout on sending message")
	}
}