Exemplo n.º 1
0
// TestOutboundPeer tests that the outbound peer works as expected.
func TestOutboundPeer(t *testing.T) {

	peerCfg := &peer.Config{
		NewestBlock: func() (*chainhash.Hash, int32, error) {
			return nil, 0, errors.New("newest block not found")
		},
		UserAgentName:    "peer",
		UserAgentVersion: "1.0",
		ChainParams:      &chaincfg.MainNetParams,
		Services:         0,
	}

	r, w := io.Pipe()
	c := &conn{raddr: "10.0.0.1:8333", Writer: w, Reader: r}

	p, err := peer.NewOutboundPeer(peerCfg, "10.0.0.1:8333")
	if err != nil {
		t.Errorf("NewOutboundPeer: unexpected err - %v\n", err)
		return
	}

	// Test trying to connect twice.
	p.AssociateConnection(c)
	p.AssociateConnection(c)

	disconnected := make(chan struct{})
	go func() {
		p.WaitForDisconnect()
		disconnected <- struct{}{}
	}()

	select {
	case <-disconnected:
		close(disconnected)
	case <-time.After(time.Second):
		t.Fatal("Peer did not automatically disconnect.")
	}

	if p.Connected() {
		t.Fatalf("Should not be connected as NewestBlock produces error.")
	}

	// Test Queue Inv
	fakeBlockHash := &chainhash.Hash{0: 0x00, 1: 0x01}
	fakeInv := wire.NewInvVect(wire.InvTypeBlock, fakeBlockHash)

	// Should be noops as the peer could not connect.
	p.QueueInventory(fakeInv)
	p.AddKnownInventory(fakeInv)
	p.QueueInventory(fakeInv)

	fakeMsg := wire.NewMsgVerAck()
	p.QueueMessage(fakeMsg, nil)
	done := make(chan struct{})
	p.QueueMessage(fakeMsg, done)
	<-done
	p.Disconnect()

	// Test NewestBlock
	var newestBlock = func() (*chainhash.Hash, int32, error) {
		hashStr := "14a0810ac680a3eb3f82edc878cea25ec41d6b790744e5daeef"
		hash, err := chainhash.NewHashFromStr(hashStr)
		if err != nil {
			return nil, 0, err
		}
		return hash, 234439, nil
	}

	peerCfg.NewestBlock = newestBlock
	r1, w1 := io.Pipe()
	c1 := &conn{raddr: "10.0.0.1:8333", Writer: w1, Reader: r1}
	p1, err := peer.NewOutboundPeer(peerCfg, "10.0.0.1:8333")
	if err != nil {
		t.Errorf("NewOutboundPeer: unexpected err - %v\n", err)
		return
	}
	p1.AssociateConnection(c1)

	// Test update latest block
	latestBlockHash, err := chainhash.NewHashFromStr("1a63f9cdff1752e6375c8c76e543a71d239e1a2e5c6db1aa679")
	if err != nil {
		t.Errorf("NewHashFromStr: unexpected err %v\n", err)
		return
	}
	p1.UpdateLastAnnouncedBlock(latestBlockHash)
	p1.UpdateLastBlockHeight(234440)
	if p1.LastAnnouncedBlock() != latestBlockHash {
		t.Errorf("LastAnnouncedBlock: wrong block - got %v, want %v",
			p1.LastAnnouncedBlock(), latestBlockHash)
		return
	}

	// Test Queue Inv after connection
	p1.QueueInventory(fakeInv)
	p1.Disconnect()

	// Test regression
	peerCfg.ChainParams = &chaincfg.RegressionNetParams
	peerCfg.Services = wire.SFNodeBloom
	r2, w2 := io.Pipe()
	c2 := &conn{raddr: "10.0.0.1:8333", Writer: w2, Reader: r2}
	p2, err := peer.NewOutboundPeer(peerCfg, "10.0.0.1:8333")
	if err != nil {
		t.Errorf("NewOutboundPeer: unexpected err - %v\n", err)
		return
	}
	p2.AssociateConnection(c2)

	// Test PushXXX
	var addrs []*wire.NetAddress
	for i := 0; i < 5; i++ {
		na := wire.NetAddress{}
		addrs = append(addrs, &na)
	}
	if _, err := p2.PushAddrMsg(addrs); err != nil {
		t.Errorf("PushAddrMsg: unexpected err %v\n", err)
		return
	}
	if err := p2.PushGetBlocksMsg(nil, &chainhash.Hash{}); err != nil {
		t.Errorf("PushGetBlocksMsg: unexpected err %v\n", err)
		return
	}
	if err := p2.PushGetHeadersMsg(nil, &chainhash.Hash{}); err != nil {
		t.Errorf("PushGetHeadersMsg: unexpected err %v\n", err)
		return
	}

	p2.PushRejectMsg("block", wire.RejectMalformed, "malformed", nil, false)
	p2.PushRejectMsg("block", wire.RejectInvalid, "invalid", nil, false)

	// Test Queue Messages
	p2.QueueMessage(wire.NewMsgGetAddr(), nil)
	p2.QueueMessage(wire.NewMsgPing(1), nil)
	p2.QueueMessage(wire.NewMsgMemPool(), nil)
	p2.QueueMessage(wire.NewMsgGetData(), nil)
	p2.QueueMessage(wire.NewMsgGetHeaders(), nil)
	p2.QueueMessage(wire.NewMsgFeeFilter(20000), nil)

	p2.Disconnect()
}
Exemplo n.º 2
0
// OpenPV starts a
func OpenSPV(remoteNode string, hfn, dbfn string,
	inTs *TxStore, hard bool, iron bool, p *chaincfg.Params) (SPVCon, error) {
	// create new SPVCon
	var s SPVCon
	s.HardMode = hard
	s.Ironman = iron
	// I should really merge SPVCon and TxStore, they're basically the same
	inTs.Param = p
	s.TS = inTs // copy pointer of txstore into spvcon

	// open header file
	err := s.openHeaderFile(hfn)
	if err != nil {
		return s, err
	}
	// open TCP connection
	s.con, err = net.Dial("tcp", remoteNode)
	if err != nil {
		return s, err
	}
	// assign version bits for local node
	s.localVersion = VERSION
	// transaction store for this SPV connection
	err = inTs.OpenDB(dbfn)
	if err != nil {
		return s, err
	}
	myMsgVer, err := wire.NewMsgVersionFromConn(s.con, 0, 0)
	if err != nil {
		return s, err
	}
	err = myMsgVer.AddUserAgent("test", "zero")
	if err != nil {
		return s, err
	}
	// must set this to enable SPV stuff
	myMsgVer.AddService(wire.SFNodeBloom)
	// set this to enable segWit
	myMsgVer.AddService(wire.SFNodeWitness)
	// this actually sends
	n, err := wire.WriteMessageN(s.con, myMsgVer, s.localVersion, s.TS.Param.Net)
	if err != nil {
		return s, err
	}
	s.WBytes += uint64(n)
	log.Printf("wrote %d byte version message to %s\n",
		n, s.con.RemoteAddr().String())
	n, m, b, err := wire.ReadMessageN(s.con, s.localVersion, s.TS.Param.Net)
	if err != nil {
		return s, err
	}
	s.RBytes += uint64(n)
	log.Printf("got %d byte response %x\n command: %s\n", n, b, m.Command())

	mv, ok := m.(*wire.MsgVersion)
	if ok {
		log.Printf("connected to %s", mv.UserAgent)
	}
	log.Printf("remote reports version %x (dec %d)\n",
		mv.ProtocolVersion, mv.ProtocolVersion)

	// set remote height
	s.remoteHeight = mv.LastBlock
	mva := wire.NewMsgVerAck()
	n, err = wire.WriteMessageN(s.con, mva, s.localVersion, s.TS.Param.Net)
	if err != nil {
		return s, err
	}
	s.WBytes += uint64(n)

	s.inMsgQueue = make(chan wire.Message)
	go s.incomingMessageHandler()
	s.outMsgQueue = make(chan wire.Message)
	go s.outgoingMessageHandler()
	s.blockQueue = make(chan HashAndHeight, 32) // queue depth 32 is a thing
	s.fPositives = make(chan int32, 4000)       // a block full, approx
	s.inWaitState = make(chan bool, 1)
	go s.fPositiveHandler()

	if hard {
		err = s.TS.Refilter()
		if err != nil {
			return s, err
		}
	}

	return s, nil
}