Merge pull request ethereum#271 from nguyenbatam/limit_max_nonce_tran…

…saction_in_queue

limit max threshold nonce in queue

common/constants.go

@@ -1,16 +1,17 @@
 package common
 
 const (
-	RewardMasterPercent     = 40
-	RewardVoterPercent      = 50
-	RewardFoundationPercent = 10
-	HexSignMethod           = "e341eaa4"
-	HexSetSecret            = "34d38600"
-	HexSetOpening           = "e11f5ba2"
-	EpocBlockSecret         = 800
-	EpocBlockOpening        = 850
-	EpocBlockRandomize      = 900
-	MaxMasternodes          = 150
-	LimitPenaltyEpoch       = 4
-	BlocksPerYear           = uint64(15768000)
+	RewardMasterPercent        = 40
+	RewardVoterPercent         = 50
+	RewardFoundationPercent    = 10
+	HexSignMethod              = "e341eaa4"
+	HexSetSecret               = "34d38600"
+	HexSetOpening              = "e11f5ba2"
+	EpocBlockSecret            = 800
+	EpocBlockOpening           = 850
+	EpocBlockRandomize         = 900
+	MaxMasternodes             = 150
+	LimitPenaltyEpoch          = 4
+	BlocksPerYear              = uint64(15768000)
+	LimitThresholdNonceInQueue = 10
 )

core/tx_pool.go

@@ -600,6 +600,9 @@ func (pool *TxPool) validateTx(tx *types.Transaction, local bool) error {
 	if pool.currentState.GetNonce(from) > tx.Nonce() {
 		return ErrNonceTooLow
 	}
+	if pool.pendingState.GetNonce(from)+common.LimitThresholdNonceInQueue < tx.Nonce() {
+		return ErrNonceTooHigh
+	}
 	// Transactor should have enough funds to cover the costs
 	// cost == V + GP * GL
 	if pool.currentState.GetBalance(from).Cmp(tx.Cost()) < 0 {