9 log "github.com/sirupsen/logrus"
10 "github.com/tendermint/tmlibs/flowrate"
11 "gopkg.in/fatih/set.v0"
13 "github.com/bytom/consensus"
14 "github.com/bytom/errors"
15 "github.com/bytom/p2p/trust"
16 "github.com/bytom/protocol/bc"
17 "github.com/bytom/protocol/bc/types"
21 maxKnownTxs = 32768 // Maximum transactions hashes to keep in the known list (prevent DOS)
22 maxKnownBlocks = 1024 // Maximum block hashes to keep in the known list (prevent DOS)
23 defaultBanThreshold = uint64(100)
26 //BasePeer is the interface for connection level peer
27 type BasePeer interface {
30 ServiceFlag() consensus.ServiceFlag
31 TrafficStatus() (*flowrate.Status, *flowrate.Status)
32 TrySend(byte, interface{}) bool
35 //BasePeerSet is the intergace for connection level peer manager
36 type BasePeerSet interface {
37 AddBannedPeer(string) error
38 StopPeerGracefully(string)
41 // PeerInfo indicate peer status snap
42 type PeerInfo struct {
43 ID string `json:"peer_id"`
44 RemoteAddr string `json:"remote_addr"`
45 Height uint64 `json:"height"`
46 Ping string `json:"ping"`
47 Duration string `json:"duration"`
48 TotalSent int64 `json:"total_sent"`
49 TotalReceived int64 `json:"total_received"`
50 AverageSentRate int64 `json:"average_sent_rate"`
51 AverageReceivedRate int64 `json:"average_received_rate"`
52 CurrentSentRate int64 `json:"current_sent_rate"`
53 CurrentReceivedRate int64 `json:"current_received_rate"`
59 services consensus.ServiceFlag
62 banScore trust.DynamicBanScore
63 knownTxs *set.Set // Set of transaction hashes known to be known by this peer
64 knownBlocks *set.Set // Set of block hashes known to be known by this peer
65 filterAdds *set.Set // Set of addresses that the spv node cares about.
68 func newPeer(height uint64, hash *bc.Hash, basePeer BasePeer) *peer {
71 services: basePeer.ServiceFlag(),
75 knownBlocks: set.New(),
76 filterAdds: set.New(),
80 func (p *peer) Height() uint64 {
86 func (p *peer) addBanScore(persistent, transient uint64, reason string) bool {
87 score := p.banScore.Increase(persistent, transient)
88 if score > defaultBanThreshold {
89 log.WithFields(log.Fields{
94 }).Errorf("banning and disconnecting")
98 warnThreshold := defaultBanThreshold >> 1
99 if score > warnThreshold {
100 log.WithFields(log.Fields{
105 }).Warning("ban score increasing")
110 func (p *peer) addFilterAddress(address []byte) {
114 if p.filterAdds.Size() >= maxFilterAddressCount {
115 log.WithField("module", logModule).Warn("the count of filter addresses is greater than limit")
118 if len(address) > maxFilterAddressSize {
119 log.WithField("module", logModule).Warn("the size of filter address is greater than limit")
123 p.filterAdds.Add(hex.EncodeToString(address))
126 func (p *peer) addFilterAddresses(addresses [][]byte) {
127 if !p.filterAdds.IsEmpty() {
130 for _, address := range addresses {
131 p.addFilterAddress(address)
135 func (p *peer) getBlockByHeight(height uint64) bool {
136 msg := struct{ BlockchainMessage }{&GetBlockMessage{Height: height}}
137 return p.TrySend(BlockchainChannel, msg)
140 func (p *peer) getBlocks(locator []*bc.Hash, stopHash *bc.Hash) bool {
141 msg := struct{ BlockchainMessage }{NewGetBlocksMessage(locator, stopHash)}
142 return p.TrySend(BlockchainChannel, msg)
145 func (p *peer) getHeaders(locator []*bc.Hash, stopHash *bc.Hash) bool {
146 msg := struct{ BlockchainMessage }{NewGetHeadersMessage(locator, stopHash)}
147 return p.TrySend(BlockchainChannel, msg)
150 func (p *peer) getPeerInfo() *PeerInfo {
152 defer p.mtx.RUnlock()
154 sentStatus, receivedStatus := p.TrafficStatus()
155 ping := sentStatus.Idle - receivedStatus.Idle
156 if receivedStatus.Idle > sentStatus.Idle {
162 RemoteAddr: p.Addr().String(),
165 Duration: sentStatus.Duration.String(),
166 TotalSent: sentStatus.Bytes,
167 TotalReceived: receivedStatus.Bytes,
168 AverageSentRate: sentStatus.AvgRate,
169 AverageReceivedRate: receivedStatus.AvgRate,
170 CurrentSentRate: sentStatus.CurRate,
171 CurrentReceivedRate: receivedStatus.CurRate,
175 func (p *peer) getRelatedTxAndStatus(txs []*types.Tx, txStatuses *bc.TransactionStatus) ([]*types.Tx, []*bc.TxVerifyResult) {
176 var relatedTxs []*types.Tx
177 var relatedStatuses []*bc.TxVerifyResult
178 for i, tx := range txs {
179 if p.isRelatedTx(tx) {
180 relatedTxs = append(relatedTxs, tx)
181 relatedStatuses = append(relatedStatuses, txStatuses.VerifyStatus[i])
184 return relatedTxs, relatedStatuses
187 func (p *peer) isRelatedTx(tx *types.Tx) bool {
188 for _, input := range tx.Inputs {
189 switch inp := input.TypedInput.(type) {
190 case *types.SpendInput:
191 if p.filterAdds.Has(hex.EncodeToString(inp.ControlProgram)) {
196 for _, output := range tx.Outputs {
197 if p.filterAdds.Has(hex.EncodeToString(output.ControlProgram)) {
204 func (p *peer) isSPVNode() bool {
205 return !p.services.IsEnable(consensus.SFFullNode)
208 func (p *peer) markBlock(hash *bc.Hash) {
212 for p.knownBlocks.Size() >= maxKnownBlocks {
215 p.knownBlocks.Add(hash.String())
218 func (p *peer) markTransaction(hash *bc.Hash) {
222 for p.knownTxs.Size() >= maxKnownTxs {
225 p.knownTxs.Add(hash.String())
228 func (p *peer) sendBlock(block *types.Block) (bool, error) {
229 msg, err := NewBlockMessage(block)
231 return false, errors.Wrap(err, "fail on NewBlockMessage")
234 ok := p.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg})
236 blcokHash := block.Hash()
237 p.knownBlocks.Add(blcokHash.String())
242 func (p *peer) sendBlocks(blocks []*types.Block) (bool, error) {
243 msg, err := NewBlocksMessage(blocks)
245 return false, errors.Wrap(err, "fail on NewBlocksMessage")
248 if ok := p.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
252 for _, block := range blocks {
253 blcokHash := block.Hash()
254 p.knownBlocks.Add(blcokHash.String())
259 func (p *peer) sendHeaders(headers []*types.BlockHeader) (bool, error) {
260 msg, err := NewHeadersMessage(headers)
262 return false, errors.New("fail on NewHeadersMessage")
265 ok := p.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg})
269 func (p *peer) sendMerkleBlock(block *types.Block, txStatuses *bc.TransactionStatus) (bool, error) {
270 msg := NewMerkleBlockMessage()
271 if err := msg.setRawBlockHeader(block.BlockHeader); err != nil {
275 relatedTxs, relatedStatuses := p.getRelatedTxAndStatus(block.Transactions, txStatuses)
277 txHashes, txFlags := types.GetTxMerkleTreeProof(block.Transactions, relatedTxs)
278 if err := msg.setTxInfo(txHashes, txFlags, relatedTxs); err != nil {
282 statusHashes := types.GetStatusMerkleTreeProof(txStatuses.VerifyStatus, txFlags)
283 if err := msg.setStatusInfo(statusHashes, relatedStatuses); err != nil {
287 ok := p.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg})
291 func (p *peer) sendTransactions(txs []*types.Tx) (bool, error) {
292 for _, tx := range txs {
293 if p.isSPVNode() && !p.isRelatedTx(tx) {
296 msg, err := NewTransactionMessage(tx)
298 return false, errors.Wrap(err, "failed to tx msg")
301 if p.knownTxs.Has(tx.ID.String()) {
304 if ok := p.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
307 p.knownTxs.Add(tx.ID.String())
312 func (p *peer) setStatus(height uint64, hash *bc.Hash) {
319 type peerSet struct {
322 peers map[string]*peer
325 // newPeerSet creates a new peer set to track the active participants.
326 func newPeerSet(basePeerSet BasePeerSet) *peerSet {
328 BasePeerSet: basePeerSet,
329 peers: make(map[string]*peer),
333 func (ps *peerSet) addBanScore(peerID string, persistent, transient uint64, reason string) {
335 peer := ps.peers[peerID]
341 if ban := peer.addBanScore(persistent, transient, reason); !ban {
344 if err := ps.AddBannedPeer(peer.Addr().String()); err != nil {
345 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on add ban peer")
347 ps.removePeer(peerID)
350 func (ps *peerSet) addPeer(peer BasePeer, height uint64, hash *bc.Hash) {
352 defer ps.mtx.Unlock()
354 if _, ok := ps.peers[peer.ID()]; !ok {
355 ps.peers[peer.ID()] = newPeer(height, hash, peer)
358 log.WithField("module", logModule).Warning("add existing peer to blockKeeper")
361 func (ps *peerSet) bestPeer(flag consensus.ServiceFlag) *peer {
363 defer ps.mtx.RUnlock()
366 for _, p := range ps.peers {
367 if !p.services.IsEnable(flag) {
370 if bestPeer == nil || p.height > bestPeer.height {
377 func (ps *peerSet) broadcastMinedBlock(block *types.Block) error {
378 msg, err := NewMinedBlockMessage(block)
380 return errors.Wrap(err, "fail on broadcast mined block")
384 peers := ps.peersWithoutBlock(&hash)
385 for _, peer := range peers {
386 if peer.isSPVNode() {
389 if ok := peer.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
390 log.WithFields(log.Fields{"module": logModule, "peer": peer.Addr(), "type": reflect.TypeOf(msg), "message": msg.String()}).Warning("send message to peer error")
391 ps.removePeer(peer.ID())
394 peer.markBlock(&hash)
399 func (ps *peerSet) broadcastNewStatus(bestBlock, genesisBlock *types.Block) error {
400 bestBlockHash := bestBlock.Hash()
401 peers := ps.peersWithoutBlock(&bestBlockHash)
403 genesisHash := genesisBlock.Hash()
404 msg := NewStatusResponseMessage(&bestBlock.BlockHeader, &genesisHash)
405 for _, peer := range peers {
406 if ok := peer.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
407 log.WithFields(log.Fields{"module": logModule, "peer": peer.Addr(), "type": reflect.TypeOf(msg), "message": msg.String()}).Warning("send message to peer error")
408 ps.removePeer(peer.ID())
415 func (ps *peerSet) broadcastTx(tx *types.Tx) error {
416 msg, err := NewTransactionMessage(tx)
418 return errors.Wrap(err, "fail on broadcast tx")
421 peers := ps.peersWithoutTx(&tx.ID)
422 for _, peer := range peers {
423 if peer.isSPVNode() && !peer.isRelatedTx(tx) {
426 if ok := peer.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
427 log.WithFields(log.Fields{
430 "type": reflect.TypeOf(msg),
431 "message": msg.String(),
432 }).Warning("send message to peer error")
433 ps.removePeer(peer.ID())
436 peer.markTransaction(&tx.ID)
441 func (ps *peerSet) errorHandler(peerID string, err error) {
442 if errors.Root(err) == errPeerMisbehave {
443 ps.addBanScore(peerID, 20, 0, err.Error())
445 ps.removePeer(peerID)
449 // Peer retrieves the registered peer with the given id.
450 func (ps *peerSet) getPeer(id string) *peer {
452 defer ps.mtx.RUnlock()
456 func (ps *peerSet) getPeerInfos() []*PeerInfo {
458 defer ps.mtx.RUnlock()
460 result := []*PeerInfo{}
461 for _, peer := range ps.peers {
462 result = append(result, peer.getPeerInfo())
467 func (ps *peerSet) peersWithoutBlock(hash *bc.Hash) []*peer {
469 defer ps.mtx.RUnlock()
472 for _, peer := range ps.peers {
473 if !peer.knownBlocks.Has(hash.String()) {
474 peers = append(peers, peer)
480 func (ps *peerSet) peersWithoutTx(hash *bc.Hash) []*peer {
482 defer ps.mtx.RUnlock()
485 for _, peer := range ps.peers {
486 if !peer.knownTxs.Has(hash.String()) {
487 peers = append(peers, peer)
493 func (ps *peerSet) removePeer(peerID string) {
495 delete(ps.peers, peerID)
497 ps.StopPeerGracefully(peerID)