9 log "github.com/sirupsen/logrus"
10 "github.com/tendermint/tmlibs/flowrate"
11 "gopkg.in/fatih/set.v0"
13 "github.com/bytom/bytom/consensus"
14 "github.com/bytom/bytom/errors"
15 msgs "github.com/bytom/bytom/netsync/messages"
16 "github.com/bytom/bytom/protocol/bc"
17 "github.com/bytom/bytom/protocol/bc/types"
21 maxKnownTxs = 32768 // Maximum transactions hashes to keep in the known list (prevent DOS)
22 maxKnownSignatures = 1024 // Maximum block signatures to keep in the known list (prevent DOS)
23 maxKnownBlocks = 1024 // Maximum block hashes to keep in the known list (prevent DOS)
24 maxFilterAddressSize = 50
25 maxFilterAddressCount = 1000
31 errSendStatusMsg = errors.New("send status msg fail")
32 ErrPeerMisbehave = errors.New("peer is misbehave")
33 ErrNoValidPeer = errors.New("Can't find valid fast sync peer")
36 //BasePeer is the interface for connection level peer
37 type BasePeer interface {
41 RemoteAddrHost() string
42 ServiceFlag() consensus.ServiceFlag
43 TrafficStatus() (*flowrate.Status, *flowrate.Status)
44 TrySend(byte, interface{}) bool
48 //BasePeerSet is the intergace for connection level peer manager
49 type BasePeerSet interface {
50 StopPeerGracefully(string)
51 IsBanned(ip string, level byte, reason string) bool
54 type BroadcastMsg interface {
55 FilterTargetPeers(ps *PeerSet) []string
56 MarkSendRecord(ps *PeerSet, peers []string)
62 // PeerInfo indicate peer status snap
63 type PeerInfo struct {
64 ID string `json:"peer_id"`
65 Moniker string `json:"moniker"`
66 RemoteAddr string `json:"remote_addr"`
67 Height uint64 `json:"height"`
68 Ping string `json:"ping"`
69 Duration string `json:"duration"`
70 TotalSent int64 `json:"total_sent"`
71 TotalReceived int64 `json:"total_received"`
72 AverageSentRate int64 `json:"average_sent_rate"`
73 AverageReceivedRate int64 `json:"average_received_rate"`
74 CurrentSentRate int64 `json:"current_sent_rate"`
75 CurrentReceivedRate int64 `json:"current_received_rate"`
81 services consensus.ServiceFlag
84 justifiedHeight uint64
85 justifiedHash *bc.Hash
86 knownTxs *set.Set // Set of transaction hashes known to be known by this peer
87 knownBlocks *set.Set // Set of block hashes known to be known by this peer
88 knownSignatures *set.Set // Set of block signatures known to be known by this peer
89 knownStatus uint64 // Set of chain status known to be known by this peer
90 filterAdds *set.Set // Set of addresses that the spv node cares about.
93 func newPeer(basePeer BasePeer) *Peer {
96 services: basePeer.ServiceFlag(),
97 knownTxs: set.New(set.ThreadSafe).(*set.Set),
98 knownBlocks: set.New(set.ThreadSafe).(*set.Set),
99 knownSignatures: set.New(set.ThreadSafe).(*set.Set),
100 filterAdds: set.New(set.ThreadSafe).(*set.Set),
104 func (p *Peer) Height() uint64 {
106 defer p.mtx.RUnlock()
111 func (p *Peer) JustifiedHeight() uint64 {
113 defer p.mtx.RUnlock()
115 return p.justifiedHeight
118 func (p *Peer) AddFilterAddress(address []byte) {
122 if p.filterAdds.Size() >= maxFilterAddressCount {
123 log.WithField("module", logModule).Warn("the count of filter addresses is greater than limit")
126 if len(address) > maxFilterAddressSize {
127 log.WithField("module", logModule).Warn("the size of filter address is greater than limit")
131 p.filterAdds.Add(hex.EncodeToString(address))
134 func (p *Peer) AddFilterAddresses(addresses [][]byte) {
135 if !p.filterAdds.IsEmpty() {
138 for _, address := range addresses {
139 p.AddFilterAddress(address)
143 func (p *Peer) FilterClear() {
147 func (p *Peer) GetBlockByHeight(height uint64) bool {
148 msg := struct{ msgs.BlockchainMessage }{&msgs.GetBlockMessage{Height: height}}
149 return p.TrySend(msgs.BlockchainChannel, msg)
152 func (p *Peer) GetBlocks(locator []*bc.Hash, stopHash *bc.Hash) bool {
153 msg := struct{ msgs.BlockchainMessage }{msgs.NewGetBlocksMessage(locator, stopHash)}
154 return p.TrySend(msgs.BlockchainChannel, msg)
157 func (p *Peer) GetHeaders(locator []*bc.Hash, stopHash *bc.Hash, skip uint64) bool {
158 msg := struct{ msgs.BlockchainMessage }{msgs.NewGetHeadersMessage(locator, stopHash, skip)}
159 return p.TrySend(msgs.BlockchainChannel, msg)
162 func (p *Peer) GetPeerInfo() *PeerInfo {
164 defer p.mtx.RUnlock()
166 sentStatus, receivedStatus := p.TrafficStatus()
167 ping := sentStatus.Idle - receivedStatus.Idle
168 if receivedStatus.Idle > sentStatus.Idle {
174 Moniker: p.BasePeer.Moniker(),
175 RemoteAddr: p.Addr().String(),
176 Height: p.bestHeight,
178 Duration: sentStatus.Duration.String(),
179 TotalSent: sentStatus.Bytes,
180 TotalReceived: receivedStatus.Bytes,
181 AverageSentRate: sentStatus.AvgRate,
182 AverageReceivedRate: receivedStatus.AvgRate,
183 CurrentSentRate: sentStatus.CurRate,
184 CurrentReceivedRate: receivedStatus.CurRate,
188 func (p *Peer) getRelatedTxs(txs []*types.Tx) ([]*types.Tx) {
189 var relatedTxs []*types.Tx
190 for _, tx := range txs {
191 if p.isRelatedTx(tx) {
192 relatedTxs = append(relatedTxs, tx)
198 func (p *Peer) isRelatedTx(tx *types.Tx) bool {
199 for _, input := range tx.Inputs {
200 switch inp := input.TypedInput.(type) {
201 case *types.SpendInput:
202 if p.filterAdds.Has(hex.EncodeToString(inp.ControlProgram)) {
207 for _, output := range tx.Outputs {
208 if p.filterAdds.Has(hex.EncodeToString(output.ControlProgram)) {
215 func (p *Peer) isSPVNode() bool {
216 return !p.services.IsEnable(consensus.SFFullNode)
219 func (p *Peer) MarkBlock(hash *bc.Hash) {
223 for p.knownBlocks.Size() >= maxKnownBlocks {
226 p.knownBlocks.Add(hash.String())
229 func (p *Peer) markNewStatus(height uint64) {
233 p.knownStatus = height
236 func (p *Peer) markSign(signature []byte) {
240 for p.knownSignatures.Size() >= maxKnownSignatures {
241 p.knownSignatures.Pop()
243 p.knownSignatures.Add(hex.EncodeToString(signature))
246 func (p *Peer) markTransaction(hash *bc.Hash) {
250 for p.knownTxs.Size() >= maxKnownTxs {
253 p.knownTxs.Add(hash.String())
256 func (p *Peer) SendBlock(block *types.Block) (bool, error) {
257 msg, err := msgs.NewBlockMessage(block)
259 return false, errors.Wrap(err, "fail on NewBlockMessage")
262 ok := p.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg})
264 blcokHash := block.Hash()
265 p.knownBlocks.Add(blcokHash.String())
270 func (p *Peer) SendBlocks(blocks []*types.Block) (bool, error) {
271 msg, err := msgs.NewBlocksMessage(blocks)
273 return false, errors.Wrap(err, "fail on NewBlocksMessage")
276 if ok := p.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg}); !ok {
280 for _, block := range blocks {
281 blcokHash := block.Hash()
282 p.knownBlocks.Add(blcokHash.String())
287 func (p *Peer) SendHeaders(headers []*types.BlockHeader) (bool, error) {
288 msg, err := msgs.NewHeadersMessage(headers)
290 return false, errors.New("fail on NewHeadersMessage")
293 ok := p.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg})
297 func (p *Peer) SendMerkleBlock(block *types.Block) (bool, error) {
298 msg := msgs.NewMerkleBlockMessage()
299 if err := msg.SetRawBlockHeader(block.BlockHeader); err != nil {
303 relatedTxs := p.getRelatedTxs(block.Transactions)
305 txHashes, txFlags := types.GetTxMerkleTreeProof(block.Transactions, relatedTxs)
306 if err := msg.SetTxInfo(txHashes, txFlags, relatedTxs); err != nil {
310 ok := p.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg})
314 func (p *Peer) SendTransactions(txs []*types.Tx) error {
315 validTxs := make([]*types.Tx, 0, len(txs))
316 for i, tx := range txs {
317 if p.isSPVNode() && !p.isRelatedTx(tx) || p.knownTxs.Has(tx.ID.String()) {
321 validTxs = append(validTxs, tx)
322 if len(validTxs) != msgs.TxsMsgMaxTxNum && i != len(txs)-1 {
326 msg, err := msgs.NewTransactionsMessage(validTxs)
331 if ok := p.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg}); !ok {
332 return errors.New("failed to send txs msg")
335 for _, validTx := range validTxs {
336 p.knownTxs.Add(validTx.ID.String())
339 validTxs = make([]*types.Tx, 0, len(txs))
345 func (p *Peer) SendStatus(bestHeader, justifiedHeader *types.BlockHeader) error {
346 msg := msgs.NewStatusMessage(bestHeader, justifiedHeader)
347 if ok := p.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg}); !ok {
348 return errSendStatusMsg
350 p.markNewStatus(bestHeader.Height)
354 func (p *Peer) SetBestStatus(bestHeight uint64, bestHash *bc.Hash) {
358 p.bestHeight = bestHeight
359 p.bestHash = bestHash
362 func (p *Peer) SetJustifiedStatus(justifiedHeight uint64, justifiedHash *bc.Hash) {
366 p.justifiedHeight = justifiedHeight
367 p.justifiedHash = justifiedHash
370 type PeerSet struct {
373 peers map[string]*Peer
376 // newPeerSet creates a new peer set to track the active participants.
377 func NewPeerSet(basePeerSet BasePeerSet) *PeerSet {
379 BasePeerSet: basePeerSet,
380 peers: make(map[string]*Peer),
384 func (ps *PeerSet) ProcessIllegal(peerID string, level byte, reason string) {
386 peer := ps.peers[peerID]
393 if banned := ps.IsBanned(peer.RemoteAddrHost(), level, reason); banned {
394 ps.RemovePeer(peerID)
399 func (ps *PeerSet) AddPeer(peer BasePeer) {
401 defer ps.mtx.Unlock()
403 if _, ok := ps.peers[peer.ID()]; !ok {
404 ps.peers[peer.ID()] = newPeer(peer)
407 log.WithField("module", logModule).Warning("add existing peer to blockKeeper")
410 func (ps *PeerSet) BestPeer(flag consensus.ServiceFlag) *Peer {
412 defer ps.mtx.RUnlock()
415 for _, p := range ps.peers {
416 if !p.services.IsEnable(flag) {
419 if bestPeer == nil || p.JustifiedHeight() > bestPeer.JustifiedHeight() ||
420 (p.JustifiedHeight() == bestPeer.JustifiedHeight() && p.bestHeight > bestPeer.bestHeight) ||
421 (p.JustifiedHeight() == bestPeer.JustifiedHeight() && p.bestHeight == bestPeer.bestHeight && p.IsLAN()) {
428 //SendMsg send message to the target peer.
429 func (ps *PeerSet) SendMsg(peerID string, msgChannel byte, msg interface{}) bool {
430 peer := ps.GetPeer(peerID)
435 ok := peer.TrySend(msgChannel, msg)
437 ps.RemovePeer(peerID)
442 //BroadcastMsg Broadcast message to the target peers
443 // and mark the message send record
444 func (ps *PeerSet) BroadcastMsg(bm BroadcastMsg) error {
445 //filter target peers
446 peers := bm.FilterTargetPeers(ps)
448 //broadcast to target peers
449 peersSuccess := make([]string, 0)
450 for _, peer := range peers {
451 if ok := ps.SendMsg(peer, bm.GetChan(), bm.GetMsg()); !ok {
452 log.WithFields(log.Fields{"module": logModule, "peer": peer, "type": reflect.TypeOf(bm.GetMsg()), "message": bm.MsgString()}).Warning("send message to peer error")
455 peersSuccess = append(peersSuccess, peer)
458 //mark the message send record
459 bm.MarkSendRecord(ps, peersSuccess)
463 func (ps *PeerSet) BroadcastNewStatus(bestHeader, justifiedHeader *types.BlockHeader) error {
464 msg := msgs.NewStatusMessage(bestHeader, justifiedHeader)
465 peers := ps.peersWithoutNewStatus(bestHeader.Height)
466 for _, peer := range peers {
467 if ok := peer.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg}); !ok {
468 ps.RemovePeer(peer.ID())
472 peer.markNewStatus(bestHeader.Height)
477 func (ps *PeerSet) BroadcastTx(tx *types.Tx) error {
478 msg, err := msgs.NewTransactionMessage(tx)
480 return errors.Wrap(err, "fail on broadcast tx")
483 peers := ps.peersWithoutTx(&tx.ID)
484 for _, peer := range peers {
485 if peer.isSPVNode() && !peer.isRelatedTx(tx) {
488 if ok := peer.TrySend(msgs.BlockchainChannel, struct{ msgs.BlockchainMessage }{msg}); !ok {
489 log.WithFields(log.Fields{
492 "type": reflect.TypeOf(msg),
493 "message": msg.String(),
494 }).Warning("send message to peer error")
495 ps.RemovePeer(peer.ID())
498 peer.markTransaction(&tx.ID)
503 // Peer retrieves the registered peer with the given id.
504 func (ps *PeerSet) GetPeer(id string) *Peer {
506 defer ps.mtx.RUnlock()
510 func (ps *PeerSet) GetPeersByHeight(height uint64) []*Peer {
512 defer ps.mtx.RUnlock()
515 for _, peer := range ps.peers {
516 if peer.Height() >= height {
517 peers = append(peers, peer)
523 func (ps *PeerSet) GetPeerInfos() []*PeerInfo {
525 defer ps.mtx.RUnlock()
527 result := []*PeerInfo{}
528 for _, peer := range ps.peers {
529 result = append(result, peer.GetPeerInfo())
534 func (ps *PeerSet) MarkBlock(peerID string, hash *bc.Hash) {
535 peer := ps.GetPeer(peerID)
542 func (ps *PeerSet) MarkBlockVerification(peerID string, signature []byte) {
543 peer := ps.GetPeer(peerID)
547 peer.markSign(signature)
550 func (ps *PeerSet) MarkStatus(peerID string, height uint64) {
551 peer := ps.GetPeer(peerID)
555 peer.markNewStatus(height)
558 func (ps *PeerSet) MarkTx(peerID string, txHash bc.Hash) {
560 peer := ps.peers[peerID]
566 peer.markTransaction(&txHash)
569 func (ps *PeerSet) PeersWithoutBlock(hash bc.Hash) []string {
571 defer ps.mtx.RUnlock()
574 for _, peer := range ps.peers {
575 if !peer.knownBlocks.Has(hash.String()) {
576 peers = append(peers, peer.ID())
582 func (ps *PeerSet) PeersWithoutSignature(signature []byte) []string {
584 defer ps.mtx.RUnlock()
587 for _, peer := range ps.peers {
588 if !peer.knownSignatures.Has(hex.EncodeToString(signature)) {
589 peers = append(peers, peer.ID())
595 func (ps *PeerSet) peersWithoutNewStatus(height uint64) []*Peer {
597 defer ps.mtx.RUnlock()
600 for _, peer := range ps.peers {
601 if peer.knownStatus < height {
602 peers = append(peers, peer)
608 func (ps *PeerSet) peersWithoutTx(hash *bc.Hash) []*Peer {
610 defer ps.mtx.RUnlock()
613 for _, peer := range ps.peers {
614 if !peer.knownTxs.Has(hash.String()) {
615 peers = append(peers, peer)
621 func (ps *PeerSet) RemovePeer(peerID string) {
623 delete(ps.peers, peerID)
625 ps.StopPeerGracefully(peerID)
628 func (ps *PeerSet) SetStatus(peerID string, height uint64, hash *bc.Hash) {
629 peer := ps.GetPeer(peerID)
634 peer.SetBestStatus(height, hash)
637 func (ps *PeerSet) SetJustifiedStatus(peerID string, height uint64, hash *bc.Hash) {
638 peer := ps.GetPeer(peerID)
643 peer.SetJustifiedStatus(height, hash)