Incentives: Heartbeat transaction type

agreement/gossip/networkFull_test.go

@@ -103,7 +103,7 @@ func spinNetwork(t *testing.T, nodesCount int, cfg config.Local) ([]*networkImpl
 			break
 		}
 	}
-	log.Infof("network established, %d nodes connected in %s", nodesCount, time.Now().Sub(start).String())
+	log.Infof("network established, %d nodes connected in %s", nodesCount, time.Since(start).String())
 	return networkImpls, msgCounters
 }
 

catchup/universalFetcher.go

@@ -88,7 +88,7 @@ func (uf *universalBlockFetcher) fetchBlock(ctx context.Context, round basics.Ro
 	} else {
 		return nil, nil, time.Duration(0), fmt.Errorf("fetchBlock: UniversalFetcher only supports HTTPPeer and UnicastPeer")
 	}
-	downloadDuration = time.Now().Sub(blockDownloadStartTime)
+	downloadDuration = time.Since(blockDownloadStartTime)
 	block, cert, err := processBlockBytes(fetchedBuf, round, address)
 	if err != nil {
 		return nil, nil, time.Duration(0), err

cmd/goal/clerk.go

@@ -221,8 +221,7 @@
 		}
 
 		reportInfof(infoTxPending, txid, stat.LastRound)
-		// WaitForRound waits until round "stat.LastRound+1" is committed
-		stat, err = client.WaitForRound(stat.LastRound)
+		stat, err = client.WaitForRound(stat.LastRound + 1)
 		if err != nil {
 			return model.PendingTransactionResponse{}, fmt.Errorf(errorRequestFail, err)
 		}

cmd/loadgenerator/main.go

@@ -200,22 +200,23 @@ func waitForRound(restClient client.RestClient, cfg config, spendingRound bool)
 			time.Sleep(1 * time.Second)
 			continue
 		}
-		if isSpendRound(cfg, nodeStatus.LastRound) == spendingRound {
+		lastRound := nodeStatus.LastRound
+		if isSpendRound(cfg, lastRound) == spendingRound {
 			// time to send transactions.
 			return
 		}
 		if spendingRound {
-			fmt.Printf("Last round %d, waiting for spending round %d\n", nodeStatus.LastRound, nextSpendRound(cfg, nodeStatus.LastRound))
+			fmt.Printf("Last round %d, waiting for spending round %d\n", lastRound, nextSpendRound(cfg, nodeStatus.LastRound))
 		}
 		for {
 			// wait for the next round.
-			nodeStatus, err = restClient.WaitForBlock(basics.Round(nodeStatus.LastRound))
+			err = restClient.WaitForRoundWithTimeout(lastRound + 1)
 			if err != nil {
 				fmt.Fprintf(os.Stderr, "unable to wait for next round node status : %v", err)
-				time.Sleep(1 * time.Second)
 				break
 			}
-			if isSpendRound(cfg, nodeStatus.LastRound) == spendingRound {
+			lastRound++
+			if isSpendRound(cfg, lastRound) == spendingRound {
 				// time to send transactions.
 				return
 			}

config/consensus.go

@@ -540,6 +540,9 @@ type ConsensusParams struct {
 	// occur, extra funds need to be put into the FeeSink.  The bonus amount
 	// decays exponentially.
 	Bonus BonusPlan
+
+	// Heartbeat support
+	Heartbeat bool
 }
 
 // ProposerPayoutRules puts several related consensus parameters in one place. The same
@@ -1513,7 +1516,7 @@ func initConsensusProtocols() {
 	vFuture.LogicSigVersion = 11 // When moving this to a release, put a new higher LogicSigVersion here
 
 	vFuture.Payouts.Enabled = true
-	vFuture.Payouts.Percent = 75
+	vFuture.Payouts.Percent = 50
 	vFuture.Payouts.GoOnlineFee = 2_000_000         // 2 algos
 	vFuture.Payouts.MinBalance = 30_000_000_000     // 30,000 algos
 	vFuture.Payouts.MaxBalance = 70_000_000_000_000 // 70M algos
@@ -1524,7 +1527,9 @@ func initConsensusProtocols() {
 
 	vFuture.Bonus.BaseAmount = 10_000_000 // 10 Algos
 	// 2.9 sec rounds gives about 10.8M rounds per year.
-	vFuture.Bonus.DecayInterval = 250_000 // .99^(10.8/0.25) ~ .648. So 35% decay per year
+	vFuture.Bonus.DecayInterval = 1_000_000 // .99^(10.8M/1M) ~ .897. So ~10% decay per year
+
+	vFuture.Heartbeat = true
 
 	Consensus[protocol.ConsensusFuture] = vFuture
 

config/consensus_test.go

@@ -37,6 +37,11 @@ func TestConsensusParams(t *testing.T) {
 		if params.ApplyData && params.PaysetCommit == PaysetCommitUnsupported {
 			t.Errorf("Protocol %s: ApplyData with PaysetCommitUnsupported", proto)
 		}
+
+		// To figure out challenges, nodes must be able to lookup headers up to two GracePeriods back
+		if 2*params.Payouts.ChallengeGracePeriod > params.MaxTxnLife+params.DeeperBlockHeaderHistory {
+			t.Errorf("Protocol %s: Grace period is too long", proto)
+		}
 	}
 }