Merge pull request #680 from XinFinOrg/mainnet-hot-fix-v2.2.0-api-epoch

Mainnet v2.3.0 merge hot fix branch and new epoch api

cmd/XDC/main.go

@@ -144,6 +144,7 @@ var (
 
 	rpcFlags = []cli.Flag{
 		utils.RPCEnabledFlag,
+		utils.RPCGlobalGasCapFlag,
 		utils.RPCListenAddrFlag,
 		utils.RPCPortFlag,
 		utils.RPCHttpWriteTimeoutFlag,

cmd/XDC/usage.go

@@ -144,6 +144,7 @@ var AppHelpFlagGroups = []flagGroup{
 		Name: "API AND CONSOLE",
 		Flags: []cli.Flag{
 			utils.RPCEnabledFlag,
+			utils.RPCGlobalGasCapFlag,
 			utils.RPCListenAddrFlag,
 			utils.RPCPortFlag,
 			utils.RPCHttpWriteTimeoutFlag,

cmd/utils/flags.go

@@ -374,7 +374,7 @@ var (
 		Usage: "Record information useful for VM and contract debugging",
 	}
 	RPCGlobalGasCapFlag = cli.Uint64Flag{
-		Name:  "rpc.gascap",
+		Name:  "rpc-gascap",
 		Usage: "Sets a cap on gas that can be used in eth_call/estimateGas (0=infinite)",
 		Value: ethconfig.Defaults.RPCGasCap,
 	}
@@ -1242,6 +1242,9 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 	if ctx.GlobalIsSet(DocRootFlag.Name) {
 		cfg.DocRoot = ctx.GlobalString(DocRootFlag.Name)
 	}
+	if ctx.GlobalIsSet(RPCGlobalGasCapFlag.Name) {
+		cfg.RPCGasCap = ctx.GlobalUint64(RPCGlobalGasCapFlag.Name)
+	}
 	if ctx.GlobalIsSet(RPCGlobalTxFeeCap.Name) {
 		cfg.RPCTxFeeCap = ctx.GlobalFloat64(RPCGlobalTxFeeCap.Name)
 	}

consensus/XDPoS/api.go

@@ -344,3 +344,23 @@ func (api *API) GetEpochNumbersBetween(begin, end *rpc.BlockNumber) ([]uint64, e
 	}
 	return epochSwitchNumbers, nil
 }
+
+/*
+An API exclusively for V2 consensus, designed to assist in getting rewards of the epoch number.
+Given the epoch number, search the epoch switch block.
+*/
+func (api *API) GetBlockInfoByEpochNum(epochNumber uint64) (*utils.EpochNumInfo, error) {
+	thisEpoch, nextEpoch, err := api.XDPoS.EngineV2.GetBlockByEpochNumber(api.chain, epochNumber)
+	if err != nil {
+		return nil, err
+	}
+	info := &utils.EpochNumInfo{
+		EpochBlockHash:        thisEpoch.Hash,
+		EpochRound:            thisEpoch.Round,
+		EpochFirstBlockNumber: thisEpoch.Number,
+	}
+	if nextEpoch != nil {
+		info.EpochLastBlockNumber = new(big.Int).Sub(nextEpoch.Number, big.NewInt(1))
+	}
+	return info, nil
+}

consensus/XDPoS/engines/engine_v2/engine.go

@@ -654,6 +654,10 @@ func (x *XDPoS_v2) VoteHandler(chain consensus.ChainReader, voteMsg *types.Vote)
 		3. Broadcast(Not part of consensus)
 */
 func (x *XDPoS_v2) VerifyTimeoutMessage(chain consensus.ChainReader, timeoutMsg *types.Timeout) (bool, error) {
+	if timeoutMsg.Round < x.currentRound {
+		log.Debug("[VerifyTimeoutMessage] Disqualified timeout message as the proposed round does not match currentRound", "timeoutHash", timeoutMsg.Hash(), "timeoutRound", timeoutMsg.Round, "currentRound", x.currentRound)
+		return false, nil
+	}
 	snap, err := x.getSnapshot(chain, timeoutMsg.GapNumber, true)
 	if err != nil || snap == nil {
 		log.Error("[VerifyTimeoutMessage] Fail to get snapshot when verifying timeout message!", "messageGapNumber", timeoutMsg.GapNumber, "err", err)

consensus/XDPoS/engines/engine_v2/epochSwitch.go

@@ -175,6 +175,10 @@ func (x *XDPoS_v2) GetEpochSwitchInfoBetween(chain consensus.ChainReader, begin,
 			return nil, err
 		}
 		iteratorHeader = nil
+		// V2 switch epoch switch info has nil parent
+		if epochSwitchInfo.EpochSwitchParentBlockInfo == nil {
+			break
+		}
 		iteratorHash = epochSwitchInfo.EpochSwitchParentBlockInfo.Hash
 		iteratorNum = epochSwitchInfo.EpochSwitchBlockInfo.Number
 		if iteratorNum.Cmp(begin.Number) >= 0 {

consensus/XDPoS/engines/engine_v2/forensics.go

@@ -87,6 +87,7 @@ Forensics runs in a seperate go routine as its no system critical
 Link to the flow diagram: https://hashlabs.atlassian.net/wiki/spaces/HASHLABS/pages/97878029/Forensics+Diagram+flow
 */
 func (f *Forensics) ProcessForensics(chain consensus.ChainReader, engine *XDPoS_v2, incomingQC types.QuorumCert) error {
+	return nil
 	log.Debug("Received a QC in forensics", "QC", incomingQC)
 	// Clone the values to a temporary variable
 	highestCommittedQCs := f.HighestCommittedQCs
@@ -394,6 +395,7 @@ Forensics runs in a seperate go routine as its no system critical
 Link to the flow diagram: https://hashlabs.atlassian.net/wiki/spaces/HASHLABS/pages/99516417/Vote+Equivocation+detection+specification
 */
 func (f *Forensics) ProcessVoteEquivocation(chain consensus.ChainReader, engine *XDPoS_v2, incomingVote *types.Vote) error {
+	return nil
 	log.Debug("Received a vote in forensics", "vote", incomingVote)
 	// Clone the values to a temporary variable
 	highestCommittedQCs := f.HighestCommittedQCs
@@ -484,6 +486,7 @@ func (f *Forensics) isVoteBlamed(chain consensus.ChainReader, highestCommittedQC
 }
 
 func (f *Forensics) DetectEquivocationInVotePool(vote *types.Vote, votePool *utils.Pool) {
+	return
 	poolKey := vote.PoolKey()
 	votePoolKeys := votePool.PoolObjKeysList()
 	signer, err := GetVoteSignerAddresses(vote)

consensus/XDPoS/engines/engine_v2/utils.go

@@ -3,6 +3,7 @@ package engine_v2
 import (
 	"errors"
 	"fmt"
+	"math/big"
 
 	"github.com/XinFinOrg/XDPoSChain/accounts"
 	"github.com/XinFinOrg/XDPoSChain/common"
@@ -218,3 +219,44 @@ func (x *XDPoS_v2) CalculateMissingRounds(chain consensus.ChainReader, header *t
 
 	return missedRoundsMetadata, nil
 }
+
+func (x *XDPoS_v2) GetBlockByEpochNumber(chain consensus.ChainReader, targetEpochNum uint64) (*types.BlockInfo, *types.BlockInfo, error) {
+	currentHeader := chain.CurrentHeader()
+	epochSwitchInfo, err := x.getEpochSwitchInfo(chain, currentHeader, currentHeader.Hash())
+	if err != nil {
+		return nil, nil, err
+	}
+	epochNum := x.config.V2.SwitchBlock.Uint64()/x.config.Epoch + uint64(epochSwitchInfo.EpochSwitchBlockInfo.Round)/x.config.Epoch
+	// since below function GetEpochSwitchInfoBetween(chain, start, end) return nil if start == end, we early return the result
+	if targetEpochNum == epochNum {
+		return epochSwitchInfo.EpochSwitchBlockInfo, nil, nil
+	}
+	if targetEpochNum > epochNum {
+		return nil, nil, errors.New("input epoch number > current epoch number")
+	}
+	if targetEpochNum < x.config.V2.SwitchBlock.Uint64()/x.config.Epoch {
+		return nil, nil, errors.New("input epoch number < v2 begin epoch number")
+	}
+	epoch := big.NewInt(int64(x.config.Epoch))
+	estblockNumDiff := new(big.Int).Mul(epoch, big.NewInt(int64(epochNum-targetEpochNum)))
+	estBlockNum := new(big.Int).Sub(epochSwitchInfo.EpochSwitchBlockInfo.Number, estblockNumDiff)
+	if estBlockNum.Cmp(x.config.V2.SwitchBlock) == -1 {
+		estBlockNum.Set(x.config.V2.SwitchBlock)
+	}
+	estBlockHeader := chain.GetHeaderByNumber(estBlockNum.Uint64())
+	epochSwitchInfos, err := x.GetEpochSwitchInfoBetween(chain, estBlockHeader, currentHeader)
+	if err != nil {
+		return nil, nil, err
+	}
+	for i, info := range epochSwitchInfos {
+		epochNum := x.config.V2.SwitchBlock.Uint64()/x.config.Epoch + uint64(info.EpochSwitchBlockInfo.Round)/x.config.Epoch
+		if epochNum == targetEpochNum {
+			if i < len(epochSwitchInfos)-1 {
+				nextEpoch := epochSwitchInfos[i+1].EpochSwitchBlockInfo
+				return info.EpochSwitchBlockInfo, nextEpoch, nil
+			}
+			return info.EpochSwitchBlockInfo, nil, nil
+		}
+	}
+	return nil, nil, errors.New("input epoch number not found (all rounds in this epoch are missed, which is very rare)")
+}

consensus/XDPoS/utils/types.go

@@ -71,3 +71,11 @@ type PublicApiMissedRoundsMetadata struct {
 	EpochBlockNumber *big.Int
 	MissedRounds     []MissedRoundInfo
 }
+
+// Given an epoch number, this struct records the epoch switch block (first block in epoch) infos such as block number
+type EpochNumInfo struct {
+	EpochBlockHash        common.Hash `json:"hash"`
+	EpochRound            types.Round `json:"round"`
+	EpochFirstBlockNumber *big.Int    `json:"firstBlock"`
+	EpochLastBlockNumber  *big.Int    `json:"lastBlock"`
+}

consensus/tests/engine_v2_tests/api_test.go

@@ -168,3 +168,70 @@ func TestGetEpochNumbersBetween(t *testing.T) {
 	assert.Nil(t, numbers)
 	assert.EqualError(t, err, "illegal begin block number")
 }
+func TestGetBlockByEpochNumber(t *testing.T) {
+	blockchain, _, currentBlock, signer, signFn := PrepareXDCTestBlockChainWithPenaltyForV2Engine(t, 1802, params.TestXDPoSMockChainConfig)
+
+	blockCoinBase := "0x111000000000000000000000000000000123"
+	largeRound := int64(1802)
+	newBlock := CreateBlock(blockchain, params.TestXDPoSMockChainConfig, currentBlock, int(currentBlock.NumberU64())+1, largeRound, blockCoinBase, signer, signFn, nil, nil, currentBlock.Header().Root.Hex())
+	err := blockchain.InsertBlock(newBlock)
+	assert.Nil(t, err)
+	largeRound2 := int64(3603)
+	newBlock2 := CreateBlock(blockchain, params.TestXDPoSMockChainConfig, newBlock, int(newBlock.NumberU64())+1, largeRound2, blockCoinBase, signer, signFn, nil, nil, newBlock.Header().Root.Hex())
+	err = blockchain.InsertBlock(newBlock2)
+	assert.Nil(t, err)
+
+	// block num, round, epoch is as follows
+	// 900,0,1 (v2 switch block, not v2 epoch switch block)
+	// 901,1,1 (1st epoch switch block)
+	// 902,2,1
+	// ...
+	// 1800,900,2 (2nd epoch switch block)
+	// 1801,901,2
+	// 1802,902,2
+	// 1803,1802,3 (epoch switch)
+	// epoch 4 has no block
+	// 1804,3603,5 (epoch switch)
+	engine := blockchain.Engine().(*XDPoS.XDPoS)
+
+	// init the snapshot, otherwise getEpochSwitchInfo would return error
+	checkpointHeader := blockchain.GetHeaderByNumber(blockchain.Config().XDPoS.V2.SwitchBlock.Uint64() + 1)
+	err = engine.Initial(blockchain, checkpointHeader)
+	assert.Nil(t, err)
+
+	info, err := engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(0)
+	assert.NotNil(t, err)
+	assert.Nil(t, info)
+
+	info, err = engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(1)
+	assert.Equal(t, info.EpochFirstBlockNumber.Int64(), int64(901))
+	assert.Equal(t, info.EpochLastBlockNumber.Int64(), int64(1799))
+	assert.Equal(t, info.EpochRound, types.Round(1))
+	assert.Nil(t, err)
+
+	info, err = engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(2)
+	assert.Equal(t, info.EpochFirstBlockNumber.Int64(), int64(1800))
+	assert.Equal(t, info.EpochLastBlockNumber.Int64(), int64(1802))
+	assert.Equal(t, info.EpochRound, types.Round(900))
+	assert.Nil(t, err)
+
+	info, err = engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(3)
+	assert.Equal(t, info.EpochFirstBlockNumber.Int64(), int64(1803))
+	assert.Equal(t, info.EpochLastBlockNumber.Int64(), int64(1803))
+	assert.Equal(t, info.EpochRound, types.Round(largeRound))
+	assert.Nil(t, err)
+
+	info, err = engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(4)
+	assert.NotNil(t, err)
+	assert.Nil(t, info)
+
+	info, err = engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(5)
+	assert.Equal(t, info.EpochRound, types.Round(largeRound2))
+	assert.Equal(t, info.EpochFirstBlockNumber.Int64(), int64(1804))
+	assert.Nil(t, info.EpochLastBlockNumber)
+	assert.Nil(t, err)
+
+	info, err = engine.APIs(blockchain)[0].Service.(*XDPoS.API).GetBlockInfoByEpochNum(6)
+	assert.NotNil(t, err)
+	assert.Nil(t, info)
+}

consensus/tests/engine_v2_tests/forensics_test.go

@@ -17,6 +17,8 @@ import (
 )
 
 func TestProcessQcShallSetForensicsCommittedQc(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	blockchain, _, currentBlock, signer, signFn, _ := PrepareXDCTestBlockChainForV2Engine(t, 905, params.TestXDPoSMockChainConfig, nil)
 	engineV2 := blockchain.Engine().(*XDPoS.XDPoS).EngineV2
 
@@ -92,6 +94,8 @@ func TestProcessQcShallSetForensicsCommittedQc(t *testing.T) {
 }
 
 func TestSetCommittedQCsInOrder(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	blockchain, _, currentBlock, _, _, _ := PrepareXDCTestBlockChainForV2Engine(t, 905, params.TestXDPoSMockChainConfig, nil)
 	forensics := blockchain.Engine().(*XDPoS.XDPoS).EngineV2.GetForensicsFaker()
 
@@ -118,6 +122,8 @@ func TestSetCommittedQCsInOrder(t *testing.T) {
 
 // Happty path
 func TestForensicsMonitoring(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	blockchain, _, currentBlock, _, _, _ := PrepareXDCTestBlockChainForV2Engine(t, 915, params.TestXDPoSMockChainConfig, nil)
 	forensics := blockchain.Engine().(*XDPoS.XDPoS).EngineV2.GetForensicsFaker()
 	var decodedCurrentblockExtraField types.ExtraFields_v2
@@ -140,6 +146,7 @@ func TestForensicsMonitoring(t *testing.T) {
 }
 
 func TestForensicsMonitoringNotOnSameChainButHaveSameRoundQC(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
 	var numOfForks = new(int)
 	*numOfForks = 10
 	var forkRoundDifference = new(int)
@@ -199,6 +206,8 @@ func TestForensicsMonitoringNotOnSameChainButHaveSameRoundQC(t *testing.T) {
 }
 
 func TestForensicsMonitoringNotOnSameChainDoNotHaveSameRoundQC(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	var numOfForks = new(int)
 	*numOfForks = 10
 	var forkRoundDifference = new(int)
@@ -260,6 +269,8 @@ func TestForensicsMonitoringNotOnSameChainDoNotHaveSameRoundQC(t *testing.T) {
 
 // "prone to attack" test where the "across epoch" field is true
 func TestForensicsAcrossEpoch(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	var numOfForks = new(int)
 	*numOfForks = 10
 	var forkRoundDifference = new(int)
@@ -322,6 +333,8 @@ func TestForensicsAcrossEpoch(t *testing.T) {
 }
 
 func TestVoteEquivocationSameRound(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	var numOfForks = new(int)
 	*numOfForks = 1
 	blockchain, _, currentBlock, signer, signFn, currentForkBlock := PrepareXDCTestBlockChainForV2Engine(t, 901, params.TestXDPoSMockChainConfig, &ForkedBlockOptions{numOfForkedBlocks: numOfForks})
@@ -388,6 +401,8 @@ func TestVoteEquivocationSameRound(t *testing.T) {
 }
 
 func TestVoteEquivocationDifferentRound(t *testing.T) {
+	t.Skip("Skipping this test for now as we disable forensics")
+
 	var numOfForks = new(int)
 	*numOfForks = 10
 	var forkRoundDifference = new(int)

eth/api_backend.go

@@ -442,11 +442,11 @@ func (b *EthApiBackend) GetVotersRewards(masternodeAddr common.Address) map[comm
 	// calculate for 2 epochs ago
 	currentCheckpointNumber, _, err := engine.GetCurrentEpochSwitchBlock(chain, block.Number())
 	if err != nil {
-		log.Error("[GetVotersRewards] Fail to get GetCurrentEpochSwitchBlock for current checkpoint block", "block", block)
+		log.Error("[GetVotersRewards] Fail to get GetCurrentEpochSwitchBlock for current checkpoint block", "block", block.Number(), "err", err)
 	}
 	lastCheckpointNumber, _, err := engine.GetCurrentEpochSwitchBlock(chain, big.NewInt(int64(currentCheckpointNumber-1)))
 	if err != nil {
-		log.Error("[GetVotersRewards] Fail to get GetCurrentEpochSwitchBlock for last checkpoint block", "block", block)
+		log.Error("[GetVotersRewards] Fail to get GetCurrentEpochSwitchBlock for last checkpoint block", "block", block.Number(), "err", err)
 	}
 
 	lastCheckpointBlock := chain.GetBlockByNumber(lastCheckpointNumber)

eth/bft/bft_handler.go

@@ -11,7 +11,7 @@ import (
 
 const maxBlockDist = 7 // Maximum allowed backward distance from the chain head, 7 is just a magic number indicate very close block
 
-//Define Boradcast Group functions
+// Define Boradcast Group functions
 type broadcastVoteFn func(*types.Vote)
 type broadcastTimeoutFn func(*types.Timeout)
 type broadcastSyncInfoFn func(*types.SyncInfo)
@@ -93,9 +93,8 @@ func (b *Bfter) Vote(peer string, vote *types.Vote) error {
 		return err
 	}
 
-	b.broadcastCh <- vote
-
 	if verified {
+		b.broadcastCh <- vote
 		err = b.consensus.voteHandler(b.blockChainReader, vote)
 		if err != nil {
 			if _, ok := err.(*utils.ErrIncomingMessageRoundTooFarFromCurrentRound); ok {
@@ -126,8 +125,8 @@ func (b *Bfter) Timeout(peer string, timeout *types.Timeout) error {
 		return err
 	}
 
-	b.broadcastCh <- timeout
 	if verified {
+		b.broadcastCh <- timeout
 		err = b.consensus.timeoutHandler(b.blockChainReader, timeout)
 		if err != nil {
 			if _, ok := err.(*utils.ErrIncomingMessageRoundNotEqualCurrentRound); ok {
@@ -156,9 +155,9 @@ func (b *Bfter) SyncInfo(peer string, syncInfo *types.SyncInfo) error {
 		return err
 	}
 
-	b.broadcastCh <- syncInfo
 	// Process only if verified and qualified
 	if verified {
+		b.broadcastCh <- syncInfo
 		err = b.consensus.syncInfoHandler(b.blockChainReader, syncInfo)
 		if err != nil {
 			log.Error("handle BFT SyncInfo", "error", err)

eth/bft/bft_handler_test.go

@@ -144,7 +144,7 @@ func TestBoardcastButNotProcessDisqualifiedVotes(t *testing.T) {
 	tester.bfter.Vote(peerID, &vote)
 
 	time.Sleep(50 * time.Millisecond)
-	if int(handlerCounter) != targetVotes || int(broadcastCounter) != 1 {
+	if int(handlerCounter) != targetVotes || int(broadcastCounter) != 0 {
 		t.Fatalf("count mismatch: have %v on handler, %v on broadcast, want %v", handlerCounter, broadcastCounter, targetVotes)
 	}
 }
@@ -171,7 +171,7 @@ func TestBoardcastButNotProcessDisqualifiedTimeout(t *testing.T) {
 	tester.bfter.Timeout(peerID, &timeout)
 
 	time.Sleep(50 * time.Millisecond)
-	if int(handlerCounter) != targetTimeout || int(broadcastCounter) != 1 {
+	if int(handlerCounter) != targetTimeout || int(broadcastCounter) != 0 {
 		t.Fatalf("count mismatch: have %v on handler, %v on broadcast, want %v", handlerCounter, broadcastCounter, targetTimeout)
 	}
 }
@@ -198,7 +198,7 @@ func TestBoardcastButNotProcessDisqualifiedSyncInfo(t *testing.T) {
 	tester.bfter.SyncInfo(peerID, &syncInfo)
 
 	time.Sleep(50 * time.Millisecond)
-	if int(handlerCounter) != targetSyncInfo || int(broadcastCounter) != 1 {
+	if int(handlerCounter) != targetSyncInfo || int(broadcastCounter) != 0 {
 		t.Fatalf("count mismatch: have %v on handler, %v on broadcast, want %v", handlerCounter, broadcastCounter, targetSyncInfo)
 	}
 }

eth/ethconfig/config.go

@@ -69,7 +69,7 @@ var Defaults = Config{
 	GasPrice:           big.NewInt(0.25 * params.Shannon),
 
 	TxPool:      core.DefaultTxPoolConfig,
-	RPCGasCap:   25000000,
+	RPCGasCap:   50000000,
 	GPO:         FullNodeGPO,
 	RPCTxFeeCap: 1, // 1 ether
 }

eth/peer.go

@@ -37,13 +37,13 @@ var (
 )
 
 const (
-	maxKnownTxs        = 32768 // Maximum transactions hashes to keep in the known list (prevent DOS)
-	maxKnownOrderTxs   = 32768 // Maximum transactions hashes to keep in the known list (prevent DOS)
-	maxKnownLendingTxs = 32768 // Maximum transactions hashes to keep in the known list (prevent DOS)
-	maxKnownBlocks     = 1024  // Maximum block hashes to keep in the known list (prevent DOS)
-	maxKnownVote       = 1024  // Maximum transactions hashes to keep in the known list (prevent DOS)
-	maxKnownTimeout    = 1024  // Maximum transactions hashes to keep in the known list (prevent DOS)
-	maxKnownSyncInfo   = 1024  // Maximum transactions hashes to keep in the known list (prevent DOS)
+	maxKnownTxs        = 32768  // Maximum transactions hashes to keep in the known list (prevent DOS)
+	maxKnownOrderTxs   = 32768  // Maximum transactions hashes to keep in the known list (prevent DOS)
+	maxKnownLendingTxs = 32768  // Maximum transactions hashes to keep in the known list (prevent DOS)
+	maxKnownBlocks     = 1024   // Maximum block hashes to keep in the known list (prevent DOS)
+	maxKnownVote       = 131072 // Maximum transactions hashes to keep in the known list (prevent DOS)
+	maxKnownTimeout    = 131072 // Maximum transactions hashes to keep in the known list (prevent DOS)
+	maxKnownSyncInfo   = 131072 // Maximum transactions hashes to keep in the known list (prevent DOS)
 	handshakeTimeout   = 5 * time.Second
 )
 

internal/debug/flags.go

@@ -106,7 +106,7 @@ var Flags = []cli.Flag{
 	//blockprofilerateFlag,
 	cpuprofileFlag,
 	//traceFlag,
-	//periodicProfilingFlag,
+	periodicProfilingFlag,
 	debugDataDirFlag,
 }
 

internal/ethapi/api.go

@@ -877,7 +877,7 @@ func (s *PublicBlockChainAPI) GetCandidateStatus(ctx context.Context, coinbaseAd
 	epochConfig := s.b.ChainConfig().XDPoS.Epoch
 
 	// checkpoint block
-	checkpointNumber, epochNumber = s.GetPreviousCheckpointFromEpoch(ctx, epoch)
+	checkpointNumber, epochNumber = s.GetCheckpointFromEpoch(ctx, epoch)
 	result[fieldEpoch] = epochNumber.Int64()
 
 	block, err = s.b.BlockByNumber(ctx, checkpointNumber)
@@ -1036,7 +1036,7 @@ func (s *PublicBlockChainAPI) GetCandidates(ctx context.Context, epoch rpc.Epoch
 	}
 	epochConfig := s.b.ChainConfig().XDPoS.Epoch
 
-	checkpointNumber, epochNumber = s.GetPreviousCheckpointFromEpoch(ctx, epoch)
+	checkpointNumber, epochNumber = s.GetCheckpointFromEpoch(ctx, epoch)
 	result[fieldEpoch] = epochNumber.Int64()
 
 	block, err = s.b.BlockByNumber(ctx, checkpointNumber)
@@ -1184,25 +1184,31 @@ func (s *PublicBlockChainAPI) GetCandidates(ctx context.Context, epoch rpc.Epoch
 	return result, nil
 }
 
-// GetPreviousCheckpointFromEpoch returns header of the previous checkpoint
-func (s *PublicBlockChainAPI) GetPreviousCheckpointFromEpoch(ctx context.Context, epochNum rpc.EpochNumber) (rpc.BlockNumber, rpc.EpochNumber) {
+// GetCheckpointFromEpoch returns header of the previous checkpoint
+func (s *PublicBlockChainAPI) GetCheckpointFromEpoch(ctx context.Context, epochNum rpc.EpochNumber) (rpc.BlockNumber, rpc.EpochNumber) {
 	var checkpointNumber uint64
 	epoch := s.b.ChainConfig().XDPoS.Epoch
 
 	if epochNum == rpc.LatestEpochNumber {
-		blockNumer := s.b.CurrentBlock().Number().Uint64()
-		diff := blockNumer % epoch
-		// checkpoint number
-		checkpointNumber = blockNumer - diff
-		epochNum = rpc.EpochNumber(checkpointNumber / epoch)
-		if diff > 0 {
-			epochNum += 1
+		blockNumer := s.b.CurrentBlock().Number()
+		if engine, ok := s.b.GetEngine().(*XDPoS.XDPoS); ok {
+			var err error
+			var currentEpoch uint64
+			checkpointNumber, currentEpoch, err = engine.GetCurrentEpochSwitchBlock(s.chainReader, blockNumer)
+			if err != nil {
+				log.Error("[GetCheckpointFromEpoch] Fail to get GetCurrentEpochSwitchBlock for current checkpoint block", "block", blockNumer, "err", err)
+				return 0, epochNum
+			}
+
+			epochNum = rpc.EpochNumber(currentEpoch)
 		}
 	} else if epochNum < 2 {
 		checkpointNumber = 0
 	} else {
+		// TODO this checkpointNumber needs to be recalculated for v2 blocks
 		checkpointNumber = epoch * (uint64(epochNum) - 1)
 	}
+
 	return rpc.BlockNumber(checkpointNumber), epochNum
 }
 

internal/web3ext/web3ext.go

@@ -168,6 +168,11 @@ web3._extend({
 			params: 2,
 			inputFormatter: [web3._extend.formatters.inputBlockNumberFormatter, web3._extend.formatters.inputBlockNumberFormatter]
 		}),
+		new web3._extend.Method({
+			name: 'getBlockInfoByEpochNum',
+			call: 'XDPoS_getBlockInfoByEpochNum',
+			params: 1,
+		}),
 	],
 	properties: [
 		new web3._extend.Property({

params/config.go

@@ -56,6 +56,30 @@ var (
 			TimeoutPeriod:        600,
 			MinePeriod:           2,
 		},
+		8000: {
+			MaxMasternodes:       108,
+			SwitchRound:          8000,
+			CertThreshold:        0.667,
+			TimeoutSyncThreshold: 2,
+			TimeoutPeriod:        60,
+			MinePeriod:           2,
+		},
+		220000: {
+			MaxMasternodes:       108,
+			SwitchRound:          220000,
+			CertThreshold:        0.667,
+			TimeoutSyncThreshold: 2,
+			TimeoutPeriod:        30,
+			MinePeriod:           2,
+		},
+		460000: {
+			MaxMasternodes:       108,
+			SwitchRound:          460000,
+			CertThreshold:        0.667,
+			TimeoutSyncThreshold: 2,
+			TimeoutPeriod:        20,
+			MinePeriod:           2,
+		},
 	}
 
 	TestnetV2Configs = map[uint64]*V2Config{

params/version.go

@@ -21,10 +21,10 @@ import (
 )
 
 const (
-	VersionMajor = 2       // Major version component of the current release
-	VersionMinor = 3       // Minor version component of the current release
-	VersionPatch = 1       // Patch version component of the current release
-	VersionMeta  = "beta1" // Version metadata to append to the version string
+	VersionMajor = 2        // Major version component of the current release
+	VersionMinor = 3        // Minor version component of the current release
+	VersionPatch = 0        // Patch version component of the current release
+	VersionMeta  = "stable" // Version metadata to append to the version string
 )
 
 // Version holds the textual version string.