Implement GetBlocks RPC command (#1514)

* Remove BlockHexes from GetBlocks request and response

* Add GetBlocks RPC

* Include the selectedTip's anticone in GetBlocks

* Add Anticone to fakeRelayInvsContext

* Include verbose data only if it was requested + Add comments to HandleGetBlocks

* Allow antiPastHashesBetween to receive unrelated low and high hashes

* Convert to/from protowire GetBlocksResponse with no verbose data correctly

* Removed NextLowHash

* Update GetBlocks in rpc_client

* Validate in consensus.Anticone that blockHash exists

Co-authored-by: stasatdaglabs <39559713+stasatdaglabs@users.noreply.github.com>

app/appmessage/rpc_get_blocks.go

@@ -4,9 +4,9 @@ package appmessage
 // its respective RPC message
 type GetBlocksRequestMessage struct {
 	baseMessage
-	LowHash                 string
-	IncludeBlockHexes       bool
-	IncludeBlockVerboseData bool
+	LowHash                       string
+	IncludeBlockVerboseData       bool
+	IncludeTransactionVerboseData bool
 }
 
 // Command returns the protocol command string for the message
@@ -15,11 +15,12 @@ func (msg *GetBlocksRequestMessage) Command() MessageCommand {
 }
 
 // NewGetBlocksRequestMessage returns a instance of the message
-func NewGetBlocksRequestMessage(lowHash string, includeBlockHexes bool, includeBlockVerboseData bool) *GetBlocksRequestMessage {
+func NewGetBlocksRequestMessage(lowHash string, includeBlockVerboseData bool,
+	includeTransactionVerboseData bool) *GetBlocksRequestMessage {
 	return &GetBlocksRequestMessage{
-		LowHash:                 lowHash,
-		IncludeBlockHexes:       includeBlockHexes,
-		IncludeBlockVerboseData: includeBlockVerboseData,
+		LowHash:                       lowHash,
+		IncludeBlockVerboseData:       includeBlockVerboseData,
+		IncludeTransactionVerboseData: includeTransactionVerboseData,
 	}
 }
 
@@ -28,7 +29,6 @@ func NewGetBlocksRequestMessage(lowHash string, includeBlockHexes bool, includeB
 type GetBlocksResponseMessage struct {
 	baseMessage
 	BlockHashes      []string
-	BlockHexes       []string
 	BlockVerboseData []*BlockVerboseData
 
 	Error *RPCError
@@ -45,7 +45,6 @@ func NewGetBlocksResponseMessage(blockHashes []string, blockHexes []string,
 
 	return &GetBlocksResponseMessage{
 		BlockHashes:      blockHashes,
-		BlockHexes:       blockHexes,
 		BlockVerboseData: blockVerboseData,
 	}
 }

app/protocol/flows/testing/handle_relay_invs_test.go

@@ -2,6 +2,10 @@ package testing
 
 import (
 	"fmt"
+	"sync"
+	"testing"
+	"time"
+
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol/flows/blockrelay"
 	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
@@ -18,9 +22,6 @@ import (
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 	"github.com/kaspanet/kaspad/util/mstime"
 	"github.com/pkg/errors"
-	"sync"
-	"testing"
-	"time"
 )
 
 var orphanBlock = &externalapi.DomainBlock{
@@ -109,6 +110,10 @@ type fakeRelayInvsContext struct {
 	rwLock                                        sync.RWMutex
 }
 
+func (f *fakeRelayInvsContext) Anticone(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
+	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
+}
+
 func (f *fakeRelayInvsContext) BuildBlock(coinbaseData *externalapi.DomainCoinbaseData, transactions []*externalapi.DomainTransaction) (*externalapi.DomainBlock, error) {
 	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
 }

app/rpc/rpchandlers/get_blocks.go

@@ -3,6 +3,8 @@ package rpchandlers
 import (
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/rpc/rpccontext"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 )
 
@@ -14,7 +16,77 @@ const (
 
 // HandleGetBlocks handles the respectively named RPC command
 func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appmessage.Message) (appmessage.Message, error) {
-	response := &appmessage.GetBlocksResponseMessage{}
-	response.Error = appmessage.RPCErrorf("not implemented")
+	getBlocksRequest := request.(*appmessage.GetBlocksRequestMessage)
+
+	// Validate that user didn't set IncludeTransactionVerboseData without setting IncludeBlockVerboseData
+	if !getBlocksRequest.IncludeBlockVerboseData && getBlocksRequest.IncludeTransactionVerboseData {
+		return &appmessage.GetBlocksResponseMessage{
+			Error: appmessage.RPCErrorf(
+				"If includeTransactionVerboseData is set, then includeBlockVerboseData must be set as well"),
+		}, nil
+	}
+
+	// Decode lowHash
+	// If lowHash is empty - use genesis instead.
+	lowHash := context.Config.ActiveNetParams.GenesisHash
+	if getBlocksRequest.LowHash != "" {
+		var err error
+		lowHash, err = externalapi.NewDomainHashFromString(getBlocksRequest.LowHash)
+		if err != nil {
+			return &appmessage.GetBlocksResponseMessage{
+				Error: appmessage.RPCErrorf("Could not decode lowHash %s: %s", getBlocksRequest.LowHash, err),
+			}, nil
+		}
+	}
+
+	// Get hashes between lowHash and virtualSelectedParent
+	virtualSelectedParent, err := context.Domain.Consensus().GetVirtualSelectedParent()
+	if err != nil {
+		return nil, err
+	}
+	blockHashes, err := context.Domain.Consensus().GetHashesBetween(
+		lowHash, virtualSelectedParent, maxBlocksInGetBlocksResponse)
+	if err != nil {
+		return nil, err
+	}
+
+	// If there are no maxBlocksInGetBlocksResponse between lowHash and virtualSelectedParent -
+	// add virtualSelectedParent's anticone
+	if len(blockHashes) < maxBlocksInGetBlocksResponse {
+		virtualSelectedParentAnticone, err := context.Domain.Consensus().Anticone(virtualSelectedParent)
+		if err != nil {
+			return nil, err
+		}
+		blockHashes = append(blockHashes, virtualSelectedParentAnticone...)
+	}
+
+	// Both GetHashesBetween and Anticone might return more then the allowed number of blocks, so
+	// trim any extra blocks.
+	if len(blockHashes) > maxBlocksInGetBlocksResponse {
+		blockHashes = blockHashes[:maxBlocksInGetBlocksResponse]
+	}
+
+	// Prepare the response
+	response := &appmessage.GetBlocksResponseMessage{
+		BlockHashes: hashes.ToStrings(blockHashes),
+	}
+
+	// Retrieve all block data in case BlockVerboseData was requested
+	if getBlocksRequest.IncludeBlockVerboseData {
+		response.BlockVerboseData = make([]*appmessage.BlockVerboseData, len(blockHashes))
+		for i, blockHash := range blockHashes {
+			blockHeader, err := context.Domain.Consensus().GetBlockHeader(blockHash)
+			if err != nil {
+				return nil, err
+			}
+			blockVerboseData, err := context.BuildBlockVerboseData(blockHeader, nil,
+				getBlocksRequest.IncludeTransactionVerboseData)
+			if err != nil {
+				return nil, err
+			}
+
+			response.BlockVerboseData[i] = blockVerboseData
+		}
+	}
 	return response, nil
 }

domain/consensus/consensus.go

@@ -403,3 +403,15 @@ func (s *consensus) GetHeadersSelectedTip() (*externalapi.DomainHash, error) {
 
 	return s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext)
 }
+
+func (s *consensus) Anticone(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	err := s.validateBlockHashExists(blockHash)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.dagTraversalManager.Anticone(blockHash)
+}

domain/consensus/factory.go

@@ -1,11 +1,12 @@
 package consensus
 
 import (
-	"github.com/kaspanet/kaspad/domain/consensus/datastructures/headersselectedchainstore"
 	"io/ioutil"
 	"os"
 	"sync"
 
+	"github.com/kaspanet/kaspad/domain/consensus/datastructures/headersselectedchainstore"
+
 	"github.com/kaspanet/kaspad/domain/consensus/processes/dagtraversalmanager"
 	"github.com/kaspanet/kaspad/domain/consensus/processes/finalitymanager"
 
@@ -141,7 +142,8 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		dagTopologyManager,
 		ghostdagDataStore,
 		reachabilityDataStore,
-		ghostdagManager)
+		ghostdagManager,
+		consensusStateStore)
 	pastMedianTimeManager := pastmediantimemanager.New(
 		dagParams.TimestampDeviationTolerance,
 		dbManager,

domain/consensus/model/externalapi/consensus.go

@@ -29,4 +29,5 @@ type Consensus interface {
 	GetVirtualSelectedParentChainFromBlock(blockHash *DomainHash) (*SelectedChainPath, error)
 	IsInSelectedParentChainOf(blockHashA *DomainHash, blockHashB *DomainHash) (bool, error)
 	GetHeadersSelectedTip() (*DomainHash, error)
+	Anticone(blockHash *DomainHash) ([]*DomainHash, error)
 }

domain/consensus/model/interface_processes_dagtraversalmanager.go

@@ -10,7 +10,7 @@ type DAGTraversalManager interface {
 	// SelectedChildIterator should return a BlockIterator that iterates
 	// from lowHash (exclusive) to highHash (inclusive) over highHash's selected parent chain
 	SelectedChildIterator(highHash, lowHash *externalapi.DomainHash) (BlockIterator, error)
-	AnticoneFromContext(context, lowHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error)
+	Anticone(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error)
 	BlueWindow(highHash *externalapi.DomainHash, windowSize int) ([]*externalapi.DomainHash, error)
 	NewDownHeap() BlockHeap
 	NewUpHeap() BlockHeap

domain/consensus/processes/dagtraversalmanager/anticone.go

@@ -5,10 +5,12 @@ import (
 	"github.com/kaspanet/kaspad/domain/consensus/utils/hashset"
 )
 
-// AnticoneFromContext returns blocks in (context.Past ⋂ block.Anticone)
-func (dtm *dagTraversalManager) AnticoneFromContext(context, block *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
+func (dtm *dagTraversalManager) Anticone(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
 	anticone := []*externalapi.DomainHash{}
-	queue := []*externalapi.DomainHash{context}
+	queue, err := dtm.consensusStateStore.Tips(dtm.databaseContext)
+	if err != nil {
+		return nil, err
+	}
 	visited := hashset.New()
 
 	for len(queue) > 0 {
@@ -21,7 +23,7 @@ func (dtm *dagTraversalManager) AnticoneFromContext(context, block *externalapi.
 
 		visited.Add(current)
 
-		currentIsAncestorOfBlock, err := dtm.dagTopologyManager.IsAncestorOf(current, block)
+		currentIsAncestorOfBlock, err := dtm.dagTopologyManager.IsAncestorOf(current, blockHash)
 		if err != nil {
 			return nil, err
 		}
@@ -30,7 +32,7 @@ func (dtm *dagTraversalManager) AnticoneFromContext(context, block *externalapi.
 			continue
 		}
 
-		blockIsAncestorOfCurrent, err := dtm.dagTopologyManager.IsAncestorOf(block, current)
+		blockIsAncestorOfCurrent, err := dtm.dagTopologyManager.IsAncestorOf(blockHash, current)
 		if err != nil {
 			return nil, err
 		}

domain/consensus/processes/dagtraversalmanager/dagtraversalmanager.go

@@ -15,6 +15,7 @@ type dagTraversalManager struct {
 	ghostdagManager       model.GHOSTDAGManager
 	ghostdagDataStore     model.GHOSTDAGDataStore
 	reachabilityDataStore model.ReachabilityDataStore
+	consensusStateStore   model.ConsensusStateStore
 }
 
 // New instantiates a new DAGTraversalManager
@@ -23,13 +24,15 @@ func New(
 	dagTopologyManager model.DAGTopologyManager,
 	ghostdagDataStore model.GHOSTDAGDataStore,
 	reachabilityDataStore model.ReachabilityDataStore,
-	ghostdagManager model.GHOSTDAGManager) model.DAGTraversalManager {
+	ghostdagManager model.GHOSTDAGManager,
+	conssensusStateStore model.ConsensusStateStore) model.DAGTraversalManager {
 	return &dagTraversalManager{
 		databaseContext:       databaseContext,
 		dagTopologyManager:    dagTopologyManager,
 		ghostdagDataStore:     ghostdagDataStore,
 		reachabilityDataStore: reachabilityDataStore,
 		ghostdagManager:       ghostdagManager,
+		consensusStateStore:   conssensusStateStore,
 	}
 }
 

domain/consensus/processes/syncmanager/antipast.go

@@ -12,6 +12,26 @@ import (
 func (sm *syncManager) antiPastHashesBetween(lowHash, highHash *externalapi.DomainHash,
 	maxBlueScoreDifference uint64) ([]*externalapi.DomainHash, error) {
 
+	// If lowHash is not in the selectedParentChain of highHash - SelectedChildIterator will fail.
+	// Therefore, we traverse down lowHash's selectedParentChain until we reach a block that is in
+	// highHash's selectedParentChain.
+	// We keep originalLowHash to filter out blocks in it's past later down the road
+	originalLowHash := lowHash
+	for {
+		isInSelectedParentChain, err := sm.dagTopologyManager.IsInSelectedParentChainOf(lowHash, highHash)
+		if err != nil {
+			return nil, err
+		}
+		if isInSelectedParentChain {
+			break
+		}
+		lowBlockGHOSTDAGData, err := sm.ghostdagDataStore.Get(sm.databaseContext, lowHash)
+		if err != nil {
+			return nil, err
+		}
+		lowHash = lowBlockGHOSTDAGData.SelectedParent()
+	}
+
 	lowBlockGHOSTDAGData, err := sm.ghostdagDataStore.Get(sm.databaseContext, lowHash)
 	if err != nil {
 		return nil, err
@@ -83,10 +103,17 @@ func (sm *syncManager) antiPastHashesBetween(lowHash, highHash *externalapi.Doma
 		if isCurrentAncestorOfLowHash {
 			continue
 		}
-		err = hashesUpHeap.Push(current)
+		// Push current to hashesUpHeap if it's not in the past of originalLowHash
+		isInPastOfOriginalLowHash, err := sm.dagTopologyManager.IsAncestorOf(current, originalLowHash)
 		if err != nil {
 			return nil, err
 		}
+		if !isInPastOfOriginalLowHash {
+			err = hashesUpHeap.Push(current)
+			if err != nil {
+				return nil, err
+			}
+		}
 		parents, err := sm.dagTopologyManager.Parents(current)
 		if err != nil {
 			return nil, err

infrastructure/network/netadapter/server/grpcserver/protowire/rpc.md

@@ -840,7 +840,6 @@ kaspad's current virtual.
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | lowHash | [string](#string) |  |  |
-| includeBlockHexes | [bool](#bool) |  |  |
 | includeBlockVerboseData | [bool](#bool) |  |  |
 | includeTransactionVerboseData | [bool](#bool) |  |  |
 

infrastructure/network/netadapter/server/grpcserver/protowire/rpc.pb.go

@@ -2707,9 +2707,8 @@ type GetBlocksRequestMessage struct {
 	unknownFields protoimpl.UnknownFields
 
 	LowHash                       string `protobuf:"bytes,1,opt,name=lowHash,proto3" json:"lowHash,omitempty"`
-	IncludeBlockHexes             bool   `protobuf:"varint,2,opt,name=includeBlockHexes,proto3" json:"includeBlockHexes,omitempty"`
-	IncludeBlockVerboseData       bool   `protobuf:"varint,3,opt,name=includeBlockVerboseData,proto3" json:"includeBlockVerboseData,omitempty"`
-	IncludeTransactionVerboseData bool   `protobuf:"varint,4,opt,name=includeTransactionVerboseData,proto3" json:"includeTransactionVerboseData,omitempty"`
+	IncludeBlockVerboseData       bool   `protobuf:"varint,2,opt,name=includeBlockVerboseData,proto3" json:"includeBlockVerboseData,omitempty"`
+	IncludeTransactionVerboseData bool   `protobuf:"varint,3,opt,name=includeTransactionVerboseData,proto3" json:"includeTransactionVerboseData,omitempty"`
 }
 
 func (x *GetBlocksRequestMessage) Reset() {
@@ -2751,13 +2750,6 @@ func (x *GetBlocksRequestMessage) GetLowHash() string {
 	return ""
 }
 
-func (x *GetBlocksRequestMessage) GetIncludeBlockHexes() bool {
-	if x != nil {
-		return x.IncludeBlockHexes
-	}
-	return false
-}
-
 func (x *GetBlocksRequestMessage) GetIncludeBlockVerboseData() bool {
 	if x != nil {
 		return x.IncludeBlockVerboseData
@@ -2778,8 +2770,7 @@ type GetBlocksResponseMessage struct {
 	unknownFields protoimpl.UnknownFields
 
 	BlockHashes      []string            `protobuf:"bytes,1,rep,name=blockHashes,proto3" json:"blockHashes,omitempty"`
-	BlockHexes       []string            `protobuf:"bytes,2,rep,name=blockHexes,proto3" json:"blockHexes,omitempty"`
-	BlockVerboseData []*BlockVerboseData `protobuf:"bytes,3,rep,name=blockVerboseData,proto3" json:"blockVerboseData,omitempty"`
+	BlockVerboseData []*BlockVerboseData `protobuf:"bytes,2,rep,name=blockVerboseData,proto3" json:"blockVerboseData,omitempty"`
 	Error            *RPCError           `protobuf:"bytes,1000,opt,name=error,proto3" json:"error,omitempty"`
 }
 
@@ -2822,13 +2813,6 @@ func (x *GetBlocksResponseMessage) GetBlockHashes() []string {
 	return nil
 }
 
-func (x *GetBlocksResponseMessage) GetBlockHexes() []string {
-	if x != nil {
-		return x.BlockHexes
-	}
-	return nil
-}
-
 func (x *GetBlocksResponseMessage) GetBlockVerboseData() []*BlockVerboseData {
 	if x != nil {
 		return x.BlockVerboseData
@@ -5180,271 +5164,266 @@ var file_rpc_proto_rawDesc = []byte{
 	0x61, 0x64, 0x64, 0x65, 0x64, 0x43, 0x68, 0x61, 0x69, 0x6e, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x73,
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+	0x74, 0x6f, 0x77, 0x69, 0x72, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

infrastructure/network/netadapter/server/grpcserver/protowire/rpc.proto

@@ -341,15 +341,13 @@ message GetVirtualSelectedParentChainFromBlockResponseMessage{
 // kaspad's current virtual.
 message GetBlocksRequestMessage{
   string lowHash = 1;
-  bool includeBlockHexes = 2;
-  bool includeBlockVerboseData = 3;
-  bool includeTransactionVerboseData = 4;
+  bool includeBlockVerboseData = 2;
+  bool includeTransactionVerboseData = 3;
 }
 
 message GetBlocksResponseMessage{
   repeated string blockHashes = 1;
-  repeated string blockHexes = 2;
-  repeated BlockVerboseData blockVerboseData = 3;
+  repeated BlockVerboseData blockVerboseData = 2;
   RPCError error = 1000;
 }
 

infrastructure/network/netadapter/server/grpcserver/protowire/rpc_get_blocks.go

@@ -4,17 +4,17 @@ import "github.com/kaspanet/kaspad/app/appmessage"
 
 func (x *KaspadMessage_GetBlocksRequest) toAppMessage() (appmessage.Message, error) {
 	return &appmessage.GetBlocksRequestMessage{
-		LowHash:                 x.GetBlocksRequest.LowHash,
-		IncludeBlockHexes:       x.GetBlocksRequest.IncludeBlockHexes,
-		IncludeBlockVerboseData: x.GetBlocksRequest.IncludeBlockVerboseData,
+		LowHash:                       x.GetBlocksRequest.LowHash,
+		IncludeBlockVerboseData:       x.GetBlocksRequest.IncludeBlockVerboseData,
+		IncludeTransactionVerboseData: x.GetBlocksRequest.IncludeTransactionVerboseData,
 	}, nil
 }
 
 func (x *KaspadMessage_GetBlocksRequest) fromAppMessage(message *appmessage.GetBlocksRequestMessage) error {
 	x.GetBlocksRequest = &GetBlocksRequestMessage{
-		LowHash:                 message.LowHash,
-		IncludeBlockHexes:       message.IncludeBlockHexes,
-		IncludeBlockVerboseData: message.IncludeBlockVerboseData,
+		LowHash:                       message.LowHash,
+		IncludeBlockVerboseData:       message.IncludeBlockVerboseData,
+		IncludeTransactionVerboseData: message.IncludeTransactionVerboseData,
 	}
 	return nil
 }
@@ -24,20 +24,22 @@ func (x *KaspadMessage_GetBlocksResponse) toAppMessage() (appmessage.Message, er
 	if x.GetBlocksResponse.Error != nil {
 		err = &appmessage.RPCError{Message: x.GetBlocksResponse.Error.Message}
 	}
-	blockVerboseData := make([]*appmessage.BlockVerboseData, len(x.GetBlocksResponse.BlockVerboseData))
-	for i, blockVerboseDatum := range x.GetBlocksResponse.BlockVerboseData {
-		appBlockVerboseDatum, err := blockVerboseDatum.toAppMessage()
-		if err != nil {
-			return nil, err
-		}
-		blockVerboseData[i] = appBlockVerboseDatum
+	appMessage := &appmessage.GetBlocksResponseMessage{
+		BlockHashes: x.GetBlocksResponse.BlockHashes,
+		Error:       err,
 	}
-	return &appmessage.GetBlocksResponseMessage{
-		BlockHashes:      x.GetBlocksResponse.BlockHashes,
-		BlockHexes:       x.GetBlocksResponse.BlockHexes,
-		BlockVerboseData: blockVerboseData,
-		Error:            err,
-	}, nil
+	if x.GetBlocksResponse.BlockVerboseData != nil {
+		appMessage.BlockVerboseData = make([]*appmessage.BlockVerboseData, len(x.GetBlocksResponse.BlockVerboseData))
+		for i, blockVerboseDatum := range x.GetBlocksResponse.BlockVerboseData {
+			appBlockVerboseDatum, err := blockVerboseDatum.toAppMessage()
+			if err != nil {
+				return nil, err
+			}
+			appMessage.BlockVerboseData[i] = appBlockVerboseDatum
+		}
+	}
+
+	return appMessage, nil
 }
 
 func (x *KaspadMessage_GetBlocksResponse) fromAppMessage(message *appmessage.GetBlocksResponseMessage) error {
@@ -45,20 +47,20 @@ func (x *KaspadMessage_GetBlocksResponse) fromAppMessage(message *appmessage.Get
 	if message.Error != nil {
 		err = &RPCError{Message: message.Error.Message}
 	}
-	blockVerboseData := make([]*BlockVerboseData, len(message.BlockVerboseData))
-	for i, blockVerboseDatum := range message.BlockVerboseData {
-		protoBlockVerboseDatum := &BlockVerboseData{}
-		err := protoBlockVerboseDatum.fromAppMessage(blockVerboseDatum)
-		if err != nil {
-			return err
-		}
-		blockVerboseData[i] = protoBlockVerboseDatum
-	}
 	x.GetBlocksResponse = &GetBlocksResponseMessage{
-		BlockHashes:      message.BlockHashes,
-		BlockHexes:       message.BlockHexes,
-		BlockVerboseData: blockVerboseData,
-		Error:            err,
+		BlockHashes: message.BlockHashes,
+		Error:       err,
+	}
+	if message.BlockVerboseData != nil {
+		x.GetBlocksResponse.BlockVerboseData = make([]*BlockVerboseData, len(message.BlockVerboseData))
+		for i, blockVerboseDatum := range message.BlockVerboseData {
+			protoBlockVerboseDatum := &BlockVerboseData{}
+			err := protoBlockVerboseDatum.fromAppMessage(blockVerboseDatum)
+			if err != nil {
+				return err
+			}
+			x.GetBlocksResponse.BlockVerboseData[i] = protoBlockVerboseDatum
+		}
 	}
 	return nil
 }

infrastructure/network/rpcclient/rpc_get_blocks.go

@@ -3,10 +3,11 @@ package rpcclient
 import "github.com/kaspanet/kaspad/app/appmessage"
 
 // GetBlocks sends an RPC request respective to the function's name and returns the RPC server's response
-func (c *RPCClient) GetBlocks(lowHash string, includeBlockHexes bool,
-	includeBlockVerboseData bool) (*appmessage.GetBlocksResponseMessage, error) {
+func (c *RPCClient) GetBlocks(lowHash string, includeBlockVerboseData bool,
+	includeTransactionVerboseData bool) (*appmessage.GetBlocksResponseMessage, error) {
 
-	err := c.rpcRouter.outgoingRoute().Enqueue(appmessage.NewGetBlocksRequestMessage(lowHash, includeBlockHexes, includeBlockVerboseData))
+	err := c.rpcRouter.outgoingRoute().Enqueue(
+		appmessage.NewGetBlocksRequestMessage(lowHash, includeBlockVerboseData, includeTransactionVerboseData))
 	if err != nil {
 		return nil, err
 	}