Exemple #1
0
// Instantiate returns a new NTree protocol instance
func (nt *NtreeServer) Instantiate(node *sda.TreeNodeInstance) (sda.ProtocolInstance, error) {
	log.Lvl2("Waiting for enough transactions...")
	currTransactions := nt.WaitEnoughBlocks()
	pi, err := NewNTreeRootProtocol(node, currTransactions)
	log.Lvl2("Instantiated Ntree Root Protocol with", len(currTransactions), "transactions")
	return pi, err
}
Exemple #2
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// The core of the file: read any input from the connection and outputs it into
// the server connection
func proxyConnection(conn net.Conn, done chan bool) {
	dec := json.NewDecoder(conn)
	nerr := 0
	for {
		m := SingleMeasure{}
		// Receive data
		if err := dec.Decode(&m); err != nil {
			if err == io.EOF {
				break
			}
			log.Lvl1("Error receiving data from", conn.RemoteAddr().String(), ":", err)
			nerr++
			if nerr > 1 {
				log.Lvl1("Too many errors from", conn.RemoteAddr().String(), ": Abort connection")
				break
			}
		}
		log.Lvl3("Proxy received", m)

		// Proxy data back to monitor
		if err := serverEnc.Encode(m); err != nil {
			log.Lvl2("Error proxying data :", err)
			break
		}
		if m.Name == "end" {
			// the end
			log.Lvl2("Proxy detected end of measurement. Closing connection.")
			break
		}
	}
	if err := conn.Close(); err != nil {
		log.Error("Couldn't close connection:", err)
	}
	done <- true
}
Exemple #3
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func (jv *JVSS) initSecret(sid SID) error {

	// Initialise shared secret of given type if necessary
	if _, ok := jv.secrets[sid]; !ok {
		log.Lvl2(fmt.Sprintf("Node %d: Initialising %s shared secret", jv.Index(), sid))
		sec := &Secret{
			receiver: poly.NewReceiver(jv.keyPair.Suite, jv.info, jv.keyPair),
			deals:    make(map[int]*poly.Deal),
			sigs:     make(map[int]*poly.SchnorrPartialSig),
			numConfs: 0,
		}
		jv.secrets[sid] = sec
	}

	secret := jv.secrets[sid]

	// Initialise and broadcast our deal if necessary
	if len(secret.deals) == 0 {
		kp := config.NewKeyPair(jv.keyPair.Suite)
		deal := new(poly.Deal).ConstructDeal(kp, jv.keyPair, jv.info.T, jv.info.R, jv.pubKeys)
		log.Lvl2(fmt.Sprintf("Node %d: Initialising %v deal", jv.Index(), sid))
		secret.deals[jv.Index()] = deal
		db, _ := deal.MarshalBinary()
		msg := &SecInitMsg{
			Src:  jv.Index(),
			SID:  sid,
			Deal: db,
		}
		if err := jv.Broadcast(msg); err != nil {
			return err
		}
	}
	return nil
}
Exemple #4
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func TestProtocolHandlers(t *testing.T) {
	defer log.AfterTest(t)

	local := sda.NewLocalTest()
	_, _, tree := local.GenTree(3, false, true, true)
	defer local.CloseAll()
	log.Lvl2("Sending to children")
	IncomingHandlers = make(chan *sda.TreeNodeInstance, 2)
	p, err := local.CreateProtocol(tree, "ProtocolHandlers")
	if err != nil {
		t.Fatal(err)
	}
	go p.Start()
	log.Lvl2("Waiting for responses")
	child1 := <-IncomingHandlers
	child2 := <-IncomingHandlers

	if child1.ServerIdentity().ID == child2.ServerIdentity().ID {
		t.Fatal("Both entities should be different")
	}

	log.Lvl2("Sending to parent")

	tni := p.(*ProtocolHandlers).TreeNodeInstance
	child1.SendTo(tni.TreeNode(), &NodeTestAggMsg{})
	if len(IncomingHandlers) > 0 {
		t.Fatal("This should not trigger yet")
	}
	child2.SendTo(tni.TreeNode(), &NodeTestAggMsg{})
	final := <-IncomingHandlers
	if final.ServerIdentity().ID != tni.ServerIdentity().ID {
		t.Fatal("This should be the same ID")
	}
}
Exemple #5
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// handleConnection will decode the data received and aggregates it into its
// stats
func (m *Monitor) handleConnection(conn net.Conn) {
	dec := json.NewDecoder(conn)
	nerr := 0
	for {
		measure := &SingleMeasure{}
		if err := dec.Decode(measure); err != nil {
			// if end of connection
			if err == io.EOF || strings.Contains(err.Error(), "closed") {
				break
			}
			// otherwise log it
			log.Lvl2("Error: monitor decoding from", conn.RemoteAddr().String(), ":", err)
			nerr++
			if nerr > 1 {
				log.Lvl2("Monitor: too many errors from", conn.RemoteAddr().String(), ": Abort.")
				break
			}
		}

		log.Lvlf3("Monitor: received a Measure from %s: %+v", conn.RemoteAddr().String(), measure)
		// Special case where the measurement is indicating a FINISHED step
		switch strings.ToLower(measure.Name) {
		case "end":
			log.Lvl3("Finishing monitor")
			m.done <- conn.RemoteAddr().String()
		default:
			m.measures <- measure
		}
	}
}
Exemple #6
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func (bp *BlockingProtocol) Dispatch() error {
	// first wait on stopBlockChan
	<-bp.stopBlockChan
	log.Lvl2("BlockingProtocol: will continue")
	// Then wait on the actual message
	<-bp.Incoming
	log.Lvl2("BlockingProtocol: received message => signal Done")
	// then signal that you are done
	bp.doneChan <- true
	return nil
}
Exemple #7
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func sendrcv(from, to *sda.Host) error {
	err := from.SendRaw(to.ServerIdentity, &SimpleMessage{12})
	if err != nil {
		return errors.New("Couldn't send message: " + err.Error())
	}
	// Receive the message
	log.Lvl2("Waiting to receive")
	msg := to.Receive()
	log.Lvl2("Received")
	if msg.Msg.(SimpleMessage).I != 12 {
		return errors.New("Simple message got distorted")
	}
	return nil
}
Exemple #8
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// Filter out a serie of values
func (df *DataFilter) Filter(measure string, values []float64) []float64 {
	// do we have a filter for this measure ?
	if _, ok := df.percentiles[measure]; !ok {
		return values
	}
	// Compute the percentile value
	max, err := stats.PercentileNearestRank(values, df.percentiles[measure])
	if err != nil {
		log.Lvl2("Monitor: Error filtering data(", values, "):", err)
		return values
	}

	// Find the index from where to filter
	maxIndex := -1
	for i, v := range values {
		if v > max {
			maxIndex = i
		}
	}
	// check if we foud something to filter out
	if maxIndex == -1 {
		log.Lvl3("Filtering: nothing to filter for", measure)
		return values
	}
	// return the values below the percentile
	log.Lvl3("Filtering: filters out", measure, ":", maxIndex, "/", len(values))
	return values[:maxIndex]
}
Exemple #9
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func (jv *JVSS) handleSigResp(m WSigRespMsg) error {
	msg := m.SigRespMsg

	// Collect partial signatures
	secret, ok := jv.secrets[msg.SID]
	if !ok {
		return fmt.Errorf("Error, shared secret does not exist")
	}
	secret.sigs[msg.Src] = msg.Sig

	log.Lvl2(fmt.Sprintf("Node %d: %s signatures %d/%d", jv.Index(), msg.SID, len(secret.sigs), len(jv.List())))

	// Create Schnorr signature once we received enough partial signatures
	if jv.info.T == len(secret.sigs) {

		for _, sig := range secret.sigs {
			if err := jv.schnorr.AddPartialSig(sig); err != nil {
				return err
			}
		}

		sig, err := jv.schnorr.Sig()
		if err != nil {
			return err
		}
		jv.sigChan <- sig

		// Cleanup short-term shared secret
		delete(jv.secrets, msg.SID)
	}

	return nil
}
Exemple #10
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// Tests a 2-node system
func TestCloseall(t *testing.T) {
	defer log.AfterTest(t)
	log.TestOutput(testing.Verbose(), 4)
	local := sda.NewLocalTest()
	nbrNodes := 2
	_, _, tree := local.GenTree(nbrNodes, false, true, true)
	defer local.CloseAll()

	pi, err := local.CreateProtocol(tree, "ExampleChannels")
	if err != nil {
		t.Fatal("Couldn't start protocol:", err)
	}
	go pi.Start()
	protocol := pi.(*channels.ProtocolExampleChannels)
	timeout := network.WaitRetry * time.Duration(network.MaxRetry*nbrNodes*2) * time.Millisecond
	select {
	case children := <-protocol.ChildCount:
		log.Lvl2("Instance 1 is done")
		if children != nbrNodes {
			t.Fatal("Didn't get a child-cound of", nbrNodes)
		}
	case <-time.After(timeout):
		t.Fatal("Didn't finish in time")
	}
}
Exemple #11
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func (c *Client) triggerTransactions(blocksPath string, nTxs int) error {
	log.Lvl2("ByzCoin Client will trigger up to", nTxs, "transactions")
	parser, err := blockchain.NewParser(blocksPath, magicNum)
	if err != nil {
		log.Error("Error: Couldn't parse blocks in", blocksPath,
			".\nPlease download bitcoin blocks as .dat files first and place them in",
			blocksPath, "Either run a bitcoin node (recommended) or using a torrent.")
		return err
	}

	transactions, err := parser.Parse(0, ReadFirstNBlocks)
	if err != nil {
		return fmt.Errorf("Error while parsing transactions %v", err)
	}
	if len(transactions) == 0 {
		return errors.New("Couldn't read any transactions.")
	}
	if len(transactions) < nTxs {
		return fmt.Errorf("Read only %v but caller wanted %v", len(transactions), nTxs)
	}
	consumed := nTxs
	for consumed > 0 {
		for _, tr := range transactions {
			// "send" transaction to server (we skip tcp connection on purpose here)
			c.srv.AddTransaction(tr)
		}
		consumed--
	}
	return nil
}
Exemple #12
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// Tests an n-node system
func TestPropagate(t *testing.T) {
	for _, nbrNodes := range []int{3, 10, 14} {
		local := sda.NewLocalTest()
		_, el, _ := local.GenTree(nbrNodes, false, true, true)
		o := local.Overlays[el.List[0].ID]

		i := 0
		msg := &PropagateMsg{[]byte("propagate")}

		tree := el.GenerateNaryTreeWithRoot(8, o.ServerIdentity())
		log.Lvl2("Starting to propagate", reflect.TypeOf(msg))
		pi, err := o.CreateProtocolSDA(tree, "Propagate")
		log.ErrFatal(err)
		nodes, err := propagateStartAndWait(pi, msg, 1000,
			func(m network.Body) {
				if bytes.Equal(msg.Data, m.(*PropagateMsg).Data) {
					i++
				} else {
					t.Error("Didn't receive correct data")
				}
			})
		log.ErrFatal(err)
		if i != 1 {
			t.Fatal("Didn't get data-request")
		}
		if nodes != nbrNodes {
			t.Fatal("Not all nodes replied")
		}
		local.CloseAll()
	}
}
Exemple #13
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func TestProcessor_AddMessage(t *testing.T) {
	defer log.AfterTest(t)
	p := NewServiceProcessor(nil)
	log.ErrFatal(p.RegisterMessage(procMsg))
	if len(p.functions) != 1 {
		t.Fatal("Should have registered one function")
	}
	mt := network.TypeFromData(&testMsg{})
	if mt == network.ErrorType {
		t.Fatal("Didn't register message-type correctly")
	}
	var wrongFunctions = []interface{}{
		procMsgWrong1,
		procMsgWrong2,
		procMsgWrong3,
		procMsgWrong4,
		procMsgWrong5,
		procMsgWrong6,
	}
	for _, f := range wrongFunctions {
		log.Lvl2("Checking function", reflect.TypeOf(f).String())
		err := p.RegisterMessage(f)
		if err == nil {
			t.Fatalf("Shouldn't accept function %+s", reflect.TypeOf(f).String())
		}
	}
}
Exemple #14
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// Tests a 2-node system
func TestBroadcast(t *testing.T) {
	defer log.AfterTest(t)
	log.TestOutput(testing.Verbose(), 3)
	for _, nbrNodes := range []int{3, 10, 14} {
		local := sda.NewLocalTest()
		_, _, tree := local.GenTree(nbrNodes, false, true, true)

		pi, err := local.CreateProtocol(tree, "Broadcast")
		if err != nil {
			t.Fatal("Couldn't start protocol:", err)
		}
		protocol := pi.(*manage.Broadcast)
		done := make(chan bool)
		protocol.RegisterOnDone(func() {
			done <- true
		})
		protocol.Start()
		timeout := network.WaitRetry * time.Duration(network.MaxRetry*nbrNodes*2) * time.Millisecond
		select {
		case <-done:
			log.Lvl2("Done with connecting everybody")
		case <-time.After(timeout):
			t.Fatal("Didn't finish in time")
		}
		local.CloseAll()
	}
}
Exemple #15
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// Wait for all processes to finish
func (d *Localhost) Wait() error {
	log.Lvl3("Waiting for processes to finish")

	var err error
	go func() {
		d.wgRun.Wait()
		log.Lvl3("WaitGroup is 0")
		// write to error channel when done:
		d.errChan <- nil
	}()

	// if one of the hosts fails, stop waiting and return the error:
	select {
	case e := <-d.errChan:
		log.Lvl3("Finished waiting for hosts:", e)
		if e != nil {
			if err := d.Cleanup(); err != nil {
				log.Error("Couldn't cleanup running instances",
					err)
			}
			err = e
		}
	}

	log.Lvl2("Processes finished")
	return err
}
Exemple #16
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// SendRaw sends to an ServerIdentity without wrapping the msg into a SDAMessage
func (h *Host) SendRaw(e *network.ServerIdentity, msg network.Body) error {
	if msg == nil {
		return errors.New("Can't send nil-packet")
	}
	h.networkLock.RLock()
	c, ok := h.connections[e.ID]
	h.networkLock.RUnlock()
	if !ok {
		var err error
		c, err = h.Connect(e)
		if err != nil {
			return err
		}
	}

	log.Lvlf4("%s sends to %s msg: %+v", h.ServerIdentity.Addresses, e, msg)
	var err error
	err = c.Send(context.TODO(), msg)
	if err != nil /*&& err != network.ErrClosed*/ {
		log.Lvl2("Couldn't send to", c.ServerIdentity().First(), ":", err, "trying again")
		c, err = h.Connect(e)
		if err != nil {
			return err
		}
		err = c.Send(context.TODO(), msg)
		if err != nil {
			return err
		}
	}
	log.Lvl5("Message sent")
	return nil
}
Exemple #17
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// Instantiate takes blockSize transactions and create the byzcoin instances.
func (s *Server) Instantiate(node *sda.TreeNodeInstance) (sda.ProtocolInstance, error) {
	// wait until we have enough blocks
	currTransactions := s.WaitEnoughBlocks()
	log.Lvl2("Instantiate ByzCoin Round with", len(currTransactions), "transactions")
	pi, err := NewByzCoinRootProtocol(node, currTransactions, s.timeOutMs, s.fail)

	return pi, err
}
Exemple #18
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func TestBftCoSi(t *testing.T) {
	defer log.AfterTest(t)
	log.TestOutput(testing.Verbose(), 4)

	// Register test protocol using BFTCoSi
	sda.ProtocolRegisterName(TestProtocolName, func(n *sda.TreeNodeInstance) (sda.ProtocolInstance, error) {
		return NewBFTCoSiProtocol(n, verify)
	})

	for _, nbrHosts := range []int{3, 13} {
		countMut.Lock()
		veriCount = 0
		countMut.Unlock()
		log.Lvl2("Running BFTCoSi with", nbrHosts, "hosts")
		local := sda.NewLocalTest()
		_, _, tree := local.GenBigTree(nbrHosts, nbrHosts, 3, true, true)

		done := make(chan bool)
		// create the message we want to sign for this round
		msg := []byte("Hello BFTCoSi")

		// Start the protocol
		node, err := local.CreateProtocol(tree, TestProtocolName)
		if err != nil {
			t.Fatal("Couldn't create new node:", err)
		}

		// Register the function generating the protocol instance
		var root *ProtocolBFTCoSi
		root = node.(*ProtocolBFTCoSi)
		root.Msg = msg
		// function that will be called when protocol is finished by the root
		root.RegisterOnDone(func() {
			done <- true
		})
		go node.Start()
		// are we done yet?
		wait := time.Second * 3
		select {
		case <-done:
			countMut.Lock()
			assert.Equal(t, veriCount, nbrHosts,
				"Each host should have called verification.")
			// if assert fails we don't care for unlocking (t.Fail)
			countMut.Unlock()
			sig := root.Signature()
			if err := cosi.VerifyCosiSignatureWithException(root.Suite(),
				root.AggregatedPublic, msg, sig.Sig,
				sig.Exceptions); err != nil {

				t.Fatal(fmt.Sprintf("%s Verification of the signature failed: %s", root.Name(), err.Error()))
			}
		case <-time.After(wait):
			t.Fatal("Waited", wait, "sec for BFTCoSi to finish ...")
		}
		local.CloseAll()
	}
}
Exemple #19
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// PropagateStartAndWait starts the propagation protocol and blocks until
// all children stored the new value or the timeout has been reached.
// The return value is the number of nodes that acknowledged having
// stored the new value or an error if the protocol couldn't start.
func PropagateStartAndWait(c sda.Context, el *sda.Roster, msg network.Body, msec int, f func(network.Body)) (int, error) {
	tree := el.GenerateNaryTreeWithRoot(8, c.ServerIdentity())
	log.Lvl2("Starting to propagate", reflect.TypeOf(msg))
	pi, err := c.CreateProtocolService(tree, "Propagate")
	if err != nil {
		return -1, err
	}
	return propagateStartAndWait(pi, msg, msec, f)
}
Exemple #20
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func (jv *JVSS) finaliseSecret(sid SID) error {
	secret, ok := jv.secrets[sid]
	if !ok {
		return fmt.Errorf("Error, shared secret does not exist")
	}

	log.Lvl2(fmt.Sprintf("Node %d: %s deals %d/%d", jv.Index(), sid, len(secret.deals), len(jv.List())))

	if len(secret.deals) == jv.info.T {

		for _, deal := range secret.deals {
			if _, err := secret.receiver.AddDeal(jv.Index(), deal); err != nil {
				return err
			}
		}

		sec, err := secret.receiver.ProduceSharedSecret()
		if err != nil {
			return err
		}
		secret.secret = sec
		secret.mtx.Lock()
		secret.numConfs++
		secret.mtx.Unlock()
		log.Lvl2(fmt.Sprintf("Node %d: %v created", jv.Index(), sid))

		// Initialise Schnorr struct for long-term shared secret if not done so before
		if sid == LTSS && !jv.ltssInit {
			jv.ltssInit = true
			jv.schnorr.Init(jv.keyPair.Suite, jv.info, secret.secret)
			log.Lvl2(fmt.Sprintf("Node %d: %v Schnorr struct initialised", jv.Index(), sid))
		}

		// Broadcast that we have finished setting up our shared secret
		msg := &SecConfMsg{
			Src: jv.Index(),
			SID: sid,
		}
		if err := jv.Broadcast(msg); err != nil {
			return err
		}
	}
	return nil
}
Exemple #21
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// Deploy copies all files to the run-directory
func (d *Localhost) Deploy(rc RunConfig) error {
	if runtime.GOOS == "darwin" {
		files, err := exec.Command("ulimit", "-n").Output()
		if err != nil {
			log.Fatal("Couldn't check for file-limit:", err)
		}
		filesNbr, err := strconv.Atoi(strings.TrimSpace(string(files)))
		if err != nil {
			log.Fatal("Couldn't convert", files, "to a number:", err)
		}
		hosts, _ := strconv.Atoi(rc.Get("hosts"))
		if filesNbr < hosts*2 {
			maxfiles := 10000 + hosts*2
			log.Fatalf("Maximum open files is too small. Please run the following command:\n"+
				"sudo sysctl -w kern.maxfiles=%d\n"+
				"sudo sysctl -w kern.maxfilesperproc=%d\n"+
				"ulimit -n %d\n"+
				"sudo sysctl -w kern.ipc.somaxconn=2048\n",
				maxfiles, maxfiles, maxfiles)
		}
	}

	d.servers, _ = strconv.Atoi(rc.Get("servers"))
	log.Lvl2("Localhost: Deploying and writing config-files for", d.servers, "servers")
	sim, err := sda.NewSimulation(d.Simulation, string(rc.Toml()))
	if err != nil {
		return err
	}
	d.addresses = make([]string, d.servers)
	for i := range d.addresses {
		d.addresses[i] = "localhost" + strconv.Itoa(i)
	}
	d.sc, err = sim.Setup(d.runDir, d.addresses)
	if err != nil {
		return err
	}
	d.sc.Config = string(rc.Toml())
	if err := d.sc.Save(d.runDir); err != nil {
		return err
	}
	log.Lvl2("Localhost: Done deploying")
	return nil

}
Exemple #22
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// Test sending data back and forth using the SendTo
func TestHostSendDuplex(t *testing.T) {
	defer log.AfterTest(t)
	h1, h2 := SetupTwoHosts(t, false)
	msgSimple := &SimpleMessage{5}
	err := h1.SendRaw(h2.ServerIdentity, msgSimple)
	if err != nil {
		t.Fatal("Couldn't send message from h1 to h2", err)
	}
	msg := h2.Receive()
	log.Lvl2("Received msg h1 -> h2", msg)

	err = h2.SendRaw(h1.ServerIdentity, msgSimple)
	if err != nil {
		t.Fatal("Couldn't send message from h2 to h1", err)
	}
	msg = h1.Receive()
	log.Lvl2("Received msg h2 -> h1", msg)

	h1.Close()
	h2.Close()
}
Exemple #23
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// start launches a new service
func (s *serviceFactory) start(name string, c *Context, path string) (Service, error) {
	var id ServiceID
	var ok bool
	if id, ok = s.translations[name]; !ok {
		return nil, errors.New("No Service for this name: " + name)
	}
	var fn NewServiceFunc
	if fn, ok = s.constructors[id]; !ok {
		return nil, fmt.Errorf("No Service for this id: %+v", id)
	}
	serv := fn(c, path)
	log.Lvl2("Instantiated service", name)
	return serv, nil
}
Exemple #24
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// nodeDelete needs to be separated from nodeDone, as it is also called from
// Close, but due to locking-issues here we don't lock.
func (o *Overlay) nodeDelete(tok *Token) {
	tni, ok := o.instances[tok.ID()]
	if !ok {
		log.Lvl2("Node", tok.ID(), "already gone")
		return
	}
	log.Lvl4("Closing node", tok.ID())
	err := tni.Close()
	if err != nil {
		log.Error("Error while closing node:", err)
	}
	delete(o.instances, tok.ID())
	// mark it done !
	o.instancesInfo[tok.ID()] = true
}
Exemple #25
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// PrePrepare intializes a full run of the protocol.
func (p *Protocol) PrePrepare() error {
	// pre-prepare: broadcast the block
	var err error
	log.Lvl2(p.Name(), "Broadcast PrePrepare")
	prep := &PrePrepare{p.trBlock}
	p.broadcast(func(tn *sda.TreeNode) {
		tempErr := p.SendTo(tn, prep)
		if tempErr != nil {
			err = tempErr
		}
		p.state = statePrepare
	})
	log.Lvl3(p.Name(), "Broadcast PrePrepare DONE")
	return err
}
Exemple #26
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// Build makes sure that the binary is available for our local platform
func (d *Localhost) Build(build string, arg ...string) error {
	src := "./cothority"
	dst := d.runDir + "/" + d.Simulation
	start := time.Now()
	// build for the local machine
	res, err := Build(src, dst,
		runtime.GOARCH, runtime.GOOS,
		arg...)
	if err != nil {
		log.Fatal("Error while building for localhost (src", src, ", dst", dst, ":", res)
	}
	log.Lvl3("Localhost: Build src", src, ", dst", dst)
	log.Lvl4("Localhost: Results of localhost build:", res)
	log.Lvl2("Localhost: build finished in", time.Since(start))
	return err
}
Exemple #27
0
// returns a tuple of start and stop configurations to run
func getStartStop(rcs int) (int, int) {
	ssStr := strings.Split(simRange, ":")
	start, err := strconv.Atoi(ssStr[0])
	stop := rcs - 1
	if err == nil {
		stop = start
		if len(ssStr) > 1 {
			stop, err = strconv.Atoi(ssStr[1])
			if err != nil {
				stop = rcs
			}
		}
	}
	log.Lvl2("Range is", start, ":", stop)
	return start, stop
}
Exemple #28
0
func TestNtree(t *testing.T) {
	defer log.AfterTest(t)
	log.TestOutput(testing.Verbose(), 4)

	for _, nbrHosts := range []int{1, 3, 13} {
		log.Lvl2("Running ntree with", nbrHosts, "hosts")
		local := sda.NewLocalTest()

		_, _, tree := local.GenBigTree(nbrHosts, nbrHosts, 3, true, true)

		done := make(chan bool)
		// create the message we want to sign for this round
		msg := []byte("Ntree rocks slowly")

		// Register the function generating the protocol instance
		var root *ntree.Protocol
		// function that will be called when protocol is finished by the root
		doneFunc := func() bool {
			done <- true
			return true
		}

		// Start the protocol
		pi, err := local.CreateProtocol(tree, "NaiveTree")
		if err != nil {
			t.Fatal("Couldn't create new node:", err)
		}
		root = pi.(*ntree.Protocol)
		root.Message = msg
		root.OnDoneCallback(doneFunc)
		err = pi.Start()
		if nbrHosts == 1 {
			if err == nil {
				t.Fatal("Shouldn't be able to start NTree with 1 node")
			}
		} else if err != nil {
			t.Fatal("Couldn't start protocol:", err)
		} else {
			select {
			case <-done:
			case <-time.After(time.Second * 2):
				t.Fatal("Protocol didn't finish in time")
			}
		}
		local.CloseAll()
	}
}
Exemple #29
0
func TestBlocking(t *testing.T) {
	defer log.AfterTest(t)
	l := sda.NewLocalTest()
	_, _, tree := l.GenTree(2, true, true, true)
	defer l.CloseAll()

	n1, err := l.StartProtocol("ProtocolBlocking", tree)
	if err != nil {
		t.Fatal("Couldn't start protocol")
	}
	n2, err := l.StartProtocol("ProtocolBlocking", tree)
	if err != nil {
		t.Fatal("Couldn't start protocol")
	}

	p1 := n1.(*BlockingProtocol)
	p2 := n2.(*BlockingProtocol)
	tn1 := p1.TreeNodeInstance
	tn2 := p2.TreeNodeInstance
	go func() {
		// Send two messages to n1, which blocks the old interface
		err := l.SendTreeNode("", tn2, tn1, &NodeTestMsg{})
		if err != nil {
			t.Fatal("Couldn't send message:", err)
		}
		err = l.SendTreeNode("", tn2, tn1, &NodeTestMsg{})
		if err != nil {
			t.Fatal("Couldn't send message:", err)
		}
		// Now send a message to n2, but in the old interface this
		// blocks.
		err = l.SendTreeNode("", tn1, tn2, &NodeTestMsg{})
		if err != nil {
			t.Fatal("Couldn't send message:", err)
		}
	}()
	// Release p2
	p2.stopBlockChan <- true
	select {
	case <-p2.doneChan:
		log.Lvl2("Node 2 done")
		p1.stopBlockChan <- true
		<-p1.doneChan
	case <-time.After(time.Second):
		t.Fatal("Node 2 didn't receive")
	}
}
Exemple #30
0
// Stop will close every connections it has
// And will stop updating the stats
func (m *Monitor) Stop() {
	log.Lvl2("Monitor Stop")
	m.listenerLock.Lock()
	if m.listener != nil {
		if err := m.listener.Close(); err != nil {
			log.Error("Couldn't close listener:", err)
		}
	}
	m.listenerLock.Unlock()
	m.mutexConn.Lock()
	for _, c := range m.conns {
		if err := c.Close(); err != nil {
			log.Error("Couldn't close connection:", err)
		}
	}
	m.mutexConn.Unlock()

}