added relay hash to the log print

app/protocol/flows/v4/blockrelay/ibd.go

@@ -13,7 +13,9 @@ import (
 	"github.com/kaspanet/kaspad/infrastructure/config"
 	"github.com/kaspanet/kaspad/infrastructure/logger"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
+	"github.com/kaspanet/kaspad/util/difficulty"
 	"github.com/pkg/errors"
+	"math/big"
 	"time"
 )
 
@@ -64,6 +66,29 @@ func (flow *handleIBDFlow) start() error {
 }
 
 func (flow *handleIBDFlow) runIBDIfNotRunning(block *externalapi.DomainBlock) error {
+	highHash := consensushashing.BlockHash(block)
+
+	// Temp code to avoid IBD from lagging nodes publishing their side-chain
+	virtualSelectedParent, err := flow.Domain().Consensus().GetVirtualSelectedParent()
+	if err == nil {
+		virtualSelectedParentHeader, err := flow.Domain().Consensus().GetBlockHeader(virtualSelectedParent)
+		if err == nil {
+			if virtualSelectedParentHeader.DAAScore() > block.Header.DAAScore()+2641 {
+				virtualDifficulty := difficulty.CalcWork(virtualSelectedParentHeader.Bits())
+				var virtualSub, difficultyMul big.Int
+				if difficultyMul.Mul(virtualDifficulty, big.NewInt(180)).
+					Cmp(virtualSub.Sub(virtualSelectedParentHeader.BlueWork(), block.Header.BlueWork())) < 0 {
+					log.Criticalf("Avoiding IBD triggered by relay %s because it is coming from " +
+						"a deep (%d DAA score depth) side-chain which has much lower blue work (%d, %d)",
+						highHash,
+						virtualSelectedParentHeader.DAAScore()-block.Header.DAAScore(),
+						virtualSelectedParentHeader.BlueWork(), block.Header.BlueWork())
+					return nil
+				}
+			}
+		}
+	}
+
 	wasIBDNotRunning := flow.TrySetIBDRunning(flow.peer)
 	if !wasIBDNotRunning {
 		log.Debugf("IBD is already running")
@@ -76,7 +101,6 @@ func (flow *handleIBDFlow) runIBDIfNotRunning(block *externalapi.DomainBlock) er
 		flow.logIBDFinished(isFinishedSuccessfully)
 	}()
 
-	highHash := consensushashing.BlockHash(block)
 	log.Criticalf("IBD started with peer %s and highHash %s", flow.peer, highHash)
 	log.Criticalf("Syncing blocks up to %s", highHash)
 	log.Criticalf("Trying to find highest shared chain block with peer %s with high hash %s", flow.peer, highHash)
@@ -85,29 +109,6 @@ func (flow *handleIBDFlow) runIBDIfNotRunning(block *externalapi.DomainBlock) er
 		return err
 	}
 	log.Criticalf("Found highest shared chain block %s with peer %s", highestSharedBlockHash, flow.peer)
-	if highestSharedBlockFound {
-		checkpoint, err := externalapi.NewDomainHashFromString("cdae6724abde94eebbc5cd2d8aa0861a39e5661526771c027ef2ebce32f76bbe")
-		if err != nil {
-			return err
-		}
-
-		info, err := flow.Domain().Consensus().GetBlockInfo(checkpoint)
-		if err != nil {
-			return err
-		}
-
-		if info.Exists {
-			isInSelectedParentChainOf, err := flow.Domain().Consensus().IsInSelectedParentChainOf(checkpoint, highestSharedBlockHash)
-			if err != nil {
-				return err
-			}
-
-			if !isInSelectedParentChainOf {
-				log.Criticalf("Stopped IBD because the checkpoint %s is not in the selected chain of %s", checkpoint, highestSharedBlockHash)
-				return nil
-			}
-		}
-	}
 
 	shouldDownloadHeadersProof, shouldSync, err := flow.shouldSyncAndShouldDownloadHeadersProof(block, highestSharedBlockFound)
 	if err != nil {

infrastructure/network/netadapter/router/route.go

@@ -12,7 +12,7 @@ import (
 
 const (
 	// DefaultMaxMessages is the default capacity for a route with a capacity defined
-	DefaultMaxMessages = 100
+	DefaultMaxMessages = 1000
 )
 
 var (