DownloadHeaders: Instead of using doneChan - close blockHeadersMessageChan. (#1523)

* Change Testnet name to kaspad-testnet-2

* Fix tests that hardcoded network names

.github/workflows/SetPageFileSize.ps1

@@ -11,8 +11,8 @@
 #>
 
 param(
-    [System.UInt64] $MinimumSize = 16gb ,
+    [System.UInt64] $MinimumSize = 8gb ,
-    [System.UInt64] $MaximumSize = 16gb ,
+    [System.UInt64] $MaximumSize = 8gb ,
     [System.String] $DiskRoot = "D:"
 )
 

.github/workflows/deploy.yaml

@@ -1,76 +0,0 @@
-name: Build and upload assets
-on:
-  release:
-    types: [ published ]
-
-jobs:
-  build:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ ubuntu-latest, windows-latest, macos-latest ]
-    name: Building, ${{ matrix.os }}
-    steps:
-      - name: Fix CRLF on Windows
-        if: runner.os == 'Windows'
-        run: git config --global core.autocrlf false
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-
-      # Increase the pagefile size on Windows to aviod running out of memory
-      - name: Increase pagefile size on Windows
-        if: runner.os == 'Windows'
-        run: powershell -command .github\workflows\SetPageFileSize.ps1
-
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-
-      - name: Build on Linux
-        if: runner.os == 'Linux'
-        # `-extldflags=-static` - means static link everything,
-        # `-tags netgo,osusergo` means use pure go replacements for "os/user" and "net"
-        # `-s -w` strips the binary to produce smaller size binaries
-        run: |
-          go build -v -ldflags="-s -w -extldflags=-static" -tags netgo,osusergo -o ./bin/ . ./cmd/...
-          archive="bin/kaspad-${{ github.event.release.tag_name }}-linux.zip"
-          asset_name="kaspad-${{ github.event.release.tag_name }}-linux.zip"
-          zip -r "${archive}" ./bin/*
-          echo "archive=${archive}" >> $GITHUB_ENV
-          echo "asset_name=${asset_name}" >> $GITHUB_ENV
-
-      - name: Build on Windows
-        if: runner.os == 'Windows'
-        shell: bash
-        run: |
-          go build -v -ldflags="-s -w" -o bin/ . ./cmd/...
-          archive="bin/kaspad-${{ github.event.release.tag_name }}-win64.zip"
-          asset_name="kaspad-${{ github.event.release.tag_name }}-win64.zip"
-          powershell "Compress-Archive bin/* \"${archive}\""
-          echo "archive=${archive}" >> $GITHUB_ENV
-          echo "asset_name=${asset_name}" >> $GITHUB_ENV
-
-      - name: Build on MacOS
-        if: runner.os == 'macOS'
-        run: |
-          go build -v -ldflags="-s -w" -o ./bin/ . ./cmd/...
-          archive="bin/kaspad-${{ github.event.release.tag_name }}-osx.zip"
-          asset_name="kaspad-${{ github.event.release.tag_name }}-osx.zip"
-          zip -r "${archive}" ./bin/*
-          echo "archive=${archive}" >> $GITHUB_ENV
-          echo "asset_name=${asset_name}" >> $GITHUB_ENV
-
-
-      - name: Upload release asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ github.event.release.upload_url }}
-          asset_path: "./${{ env.archive }}"
-          asset_name: "${{ env.asset_name }}"
-          asset_content_type: application/zip

.github/workflows/go.yml

@@ -0,0 +1,69 @@
+name: Go
+
+on:
+  push:
+  pull_request:
+    # edtited - "title, body, or the base branch of the PR is modified"
+    # synchronize - "commit(s) pushed to the pull request"
+    types: [opened, synchronize, edited, reopened]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ ubuntu-16.04, macos-10.15 ]
+    name: Testing on on ${{ matrix.os }}
+    steps:
+
+      - name: Fix windows CRLF
+        run: git config --global core.autocrlf false
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      # We need to increase the page size because the tests run out of memory on github CI windows.
+      # Use the powershell script from this github action: https://github.com/al-cheb/configure-pagefile-action/blob/master/scripts/SetPageFileSize.ps1
+      # MIT License (MIT) Copyright (c) 2020 Maxim Lobanov and contributors
+      - name: Increase page size on windows
+        if: runner.os == 'Windows'
+        shell: powershell
+        run: powershell -command .\.github\workflows\SetPageFileSize.ps1
+
+
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.15
+
+
+      # Source: https://github.com/actions/cache/blob/main/examples.md#go---modules
+      - name: Go Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Test
+        shell: bash
+        run: ./build_and_test.sh
+
+  coverage:
+    runs-on: ubuntu-20.04
+    name: Produce code coverage
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.15
+
+      - name: Create coverage file
+        run: go test -covermode=atomic -coverpkg=./... -coverprofile coverage.txt ./...
+
+      - name: Upload coverage file
+        run: bash <(curl -s https://codecov.io/bash)

.github/workflows/race.yaml

@@ -1,49 +0,0 @@
-name: Race
-
-on:
-  schedule:
-    - cron: "0 0 * * *"
-  workflow_dispatch:
-
-jobs:
-  race_test:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        branch: [ master, latest ]
-    name: Race detection on ${{ matrix.branch }}
-    steps:
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-
-      - name: Set scheduled branch name
-        shell: bash
-        if: github.event_name == 'schedule'
-        run: |
-          if [ "${{ matrix.branch }}" == "master" ]; then
-            echo "run_on=master" >> $GITHUB_ENV
-          fi
-          if [ "${{ matrix.branch }}" == "latest" ]; then
-            branch=$(git branch -r | grep 'v\([0-9]\+\.\)\([0-9]\+\.\)\([0-9]\+\)-dev' | sort -Vr | head -1 | xargs)
-            echo "run_on=${branch}" >> $GITHUB_ENV
-          fi
-
-      - name: Set manual branch name
-        shell: bash
-        if: github.event_name == 'workflow_dispatch'
-        run: echo "run_on=${{ github.ref }}" >> $GITHUB_ENV
-
-      - name: Test with race detector
-        shell: bash
-        run: |
-          git checkout "${{ env.run_on }}"
-          git status
-          go test -timeout 20m -race ./...

.github/workflows/tests.yaml

@@ -1,98 +0,0 @@
-name: Tests
-
-on:
-  push:
-  pull_request:
-    # edtited - because base branch can be modified
-    # synchronize - update commits on PR
-    types: [opened, synchronize, edited]
-
-jobs:
-
-  build:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ ubuntu-latest, macos-latest ]
-    name: Tests, ${{ matrix.os }}
-    steps:
-
-      - name: Fix CRLF on Windows
-        if: runner.os == 'Windows'
-        run: git config --global core.autocrlf false
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-
-      # Increase the pagefile size on Windows to aviod running out of memory
-      - name: Increase pagefile size on Windows
-        if: runner.os == 'Windows'
-        run: powershell -command .github\workflows\SetPageFileSize.ps1
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-
-
-      # Source: https://github.com/actions/cache/blob/main/examples.md#go---modules
-      - name: Go Cache
-        uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-
-      - name: Test
-        shell: bash
-        run: ./build_and_test.sh -v
-
-
-  stability-test-fast:
-    runs-on: ubuntu-latest
-    name: Fast stability tests, ${{ github.head_ref }}
-    steps:
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-
-      - name: Checkout
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Install kaspad
-        run: go install ./...
-
-      - name: Install golint
-        run: go get -u golang.org/x/lint/golint
-
-      - name: Run fast stability tests
-        working-directory: stability-tests
-        run: ./install_and_test.sh
-
-
-  coverage:
-    runs-on: ubuntu-latest
-    name: Produce code coverage
-    steps:
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-
-      - name: Delete the stability tests from coverage
-        run: rm -r stability-tests
-
-      - name: Create coverage file
-        run: go test -v -covermode=atomic -coverpkg=./... -coverprofile coverage.txt ./...
-
-      - name: Upload coverage file
-        run: bash <(curl -s https://codecov.io/bash)

CONTRIBUTING.md

@@ -12,7 +12,8 @@ If you want to make a big change it's better to discuss it first by opening an i
 
 ## Pull Request process
 
-Any pull request should be opened against the development branch `dev`.
+Any pull request should be opened against the development branch of the target version. The development branch format is
+as follows: `vx.y.z-dev`, for example: `v0.8.5-dev`.
 
 All pull requests should pass the checks written in `build_and_test.sh`, so it's recommended to run this script before
 submitting your PR.

README.md

@@ -1,13 +1,16 @@
 
 Kaspad
 ====
+Warning: This is pre-alpha software. There's no guarantee anything works.
+====
 
 [![ISC License](http://img.shields.io/badge/license-ISC-blue.svg)](https://choosealicense.com/licenses/isc/)
 [![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](http://godoc.org/github.com/kaspanet/kaspad)
 
 Kaspad is the reference full node Kaspa implementation written in Go (golang).
 
-This project is currently under active development and is in Beta state.
+This project is currently under active development and is in a pre-Alpha state.
+Some things still don't work and APIs are far from finalized. The code is provided for reference only.
 
 ## What is kaspa
 
@@ -15,7 +18,7 @@ Kaspa is an attempt at a proof-of-work cryptocurrency with instant confirmations
 
 ## Requirements
 
-Go 1.16 or later.
+Go 1.15 or later.
 
 ## Installation
 
@@ -53,15 +56,13 @@ $ kaspad
 ```
 
 ## Discord
-Join our discord server using the following link: https://discord.gg/YNYnNN5Pf2
+Join our discord server using the following link: https://discord.gg/WmGhhzk
 
 ## Issue Tracker
 
 The [integrated github issue tracker](https://github.com/kaspanet/kaspad/issues)
 is used for this project.
 
-Issue priorities may be seen at https://github.com/orgs/kaspanet/projects/4
-
 ## Documentation
 
 The [documentation](https://github.com/kaspanet/docs) is a work-in-progress

app/app.go

@@ -7,23 +7,22 @@ import (
 	"runtime"
 	"time"
 
-	"github.com/kaspanet/kaspad/infrastructure/config"
 	"github.com/kaspanet/kaspad/infrastructure/db/database"
 	"github.com/kaspanet/kaspad/infrastructure/db/database/ldb"
-	"github.com/kaspanet/kaspad/infrastructure/logger"
+
-	"github.com/kaspanet/kaspad/infrastructure/os/execenv"
-	"github.com/kaspanet/kaspad/infrastructure/os/limits"
 	"github.com/kaspanet/kaspad/infrastructure/os/signal"
-	"github.com/kaspanet/kaspad/infrastructure/os/winservice"
-	"github.com/kaspanet/kaspad/util/panics"
 	"github.com/kaspanet/kaspad/util/profiling"
 	"github.com/kaspanet/kaspad/version"
+
+	"github.com/kaspanet/kaspad/util/panics"
+
+	"github.com/kaspanet/kaspad/infrastructure/config"
+	"github.com/kaspanet/kaspad/infrastructure/os/execenv"
+	"github.com/kaspanet/kaspad/infrastructure/os/limits"
+	"github.com/kaspanet/kaspad/infrastructure/os/winservice"
 )
 
-const (
+const leveldbCacheSizeMiB = 256
-	leveldbCacheSizeMiB = 256
-	defaultDataDirname  = "datadir2"
-)
 
 var desiredLimits = &limits.DesiredLimits{
 	FileLimitWant: 2048,
@@ -52,7 +51,6 @@ func StartApp() error {
 		fmt.Fprintln(os.Stderr, err)
 		return err
 	}
-	defer logger.BackendLog.Close()
 	defer panics.HandlePanic(log, "MAIN", nil)
 
 	app := &kaspadApp{cfg: cfg}
@@ -87,7 +85,12 @@ func (app *kaspadApp) main(startedChan chan<- struct{}) error {
 	if app.cfg.Profile != "" {
 		profiling.Start(app.cfg.Profile, log)
 	}
-	profiling.TrackHeap(app.cfg.AppDir, log)
+
+	// Perform upgrades to kaspad as new versions require it.
+	if err := doUpgrades(); err != nil {
+		log.Error(err)
+		return err
+	}
 
 	// Return now if an interrupt signal was triggered.
 	if signal.InterruptRequested(interrupt) {
@@ -105,7 +108,7 @@ func (app *kaspadApp) main(startedChan chan<- struct{}) error {
 	// Open the database
 	databaseContext, err := openDB(app.cfg)
 	if err != nil {
-		log.Errorf("Loading database failed: %+v", err)
+		log.Error(err)
 		return err
 	}
 
@@ -161,9 +164,15 @@ func (app *kaspadApp) main(startedChan chan<- struct{}) error {
 	return nil
 }
 
+// doUpgrades performs upgrades to kaspad as new versions require it.
+// currently it's a placeholder we got from kaspad upstream, that does nothing
+func doUpgrades() error {
+	return nil
+}
+
 // dbPath returns the path to the block database given a database type.
 func databasePath(cfg *config.Config) string {
-	return filepath.Join(cfg.AppDir, defaultDataDirname)
+	return filepath.Join(cfg.DataDir, "db")
 }
 
 func removeDatabase(cfg *config.Config) error {
@@ -173,17 +182,6 @@ func removeDatabase(cfg *config.Config) error {
 
 func openDB(cfg *config.Config) (database.Database, error) {
 	dbPath := databasePath(cfg)
-
-	err := checkDatabaseVersion(dbPath)
-	if err != nil {
-		return nil, err
-	}
-
 	log.Infof("Loading database from '%s'", dbPath)
-	db, err := ldb.NewLevelDB(dbPath, leveldbCacheSizeMiB)
+	return ldb.NewLevelDB(dbPath, leveldbCacheSizeMiB)
-	if err != nil {
-		return nil, err
-	}
-
-	return db, nil
 }

app/appmessage/domainconverters.go

@@ -2,11 +2,7 @@ package appmessage
 
 import (
 	"encoding/hex"
-	"github.com/pkg/errors"
-	"math/big"
-
 	"github.com/kaspanet/kaspad/domain/consensus/utils/blockheader"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/utxo"
 
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
@@ -31,17 +27,13 @@ func DomainBlockToMsgBlock(domainBlock *externalapi.DomainBlock) *MsgBlock {
 func DomainBlockHeaderToBlockHeader(domainBlockHeader externalapi.BlockHeader) *MsgBlockHeader {
 	return &MsgBlockHeader{
 		Version:              domainBlockHeader.Version(),
-		Parents:              domainBlockHeader.Parents(),
+		ParentHashes:         domainBlockHeader.ParentHashes(),
 		HashMerkleRoot:       domainBlockHeader.HashMerkleRoot(),
 		AcceptedIDMerkleRoot: domainBlockHeader.AcceptedIDMerkleRoot(),
 		UTXOCommitment:       domainBlockHeader.UTXOCommitment(),
 		Timestamp:            mstime.UnixMilliseconds(domainBlockHeader.TimeInMilliseconds()),
 		Bits:                 domainBlockHeader.Bits(),
 		Nonce:                domainBlockHeader.Nonce(),
-		BlueScore:            domainBlockHeader.BlueScore(),
-		DAAScore:             domainBlockHeader.DAAScore(),
-		BlueWork:             domainBlockHeader.BlueWork(),
-		PruningPoint:         domainBlockHeader.PruningPoint(),
 	}
 }
 
@@ -62,17 +54,13 @@ func MsgBlockToDomainBlock(msgBlock *MsgBlock) *externalapi.DomainBlock {
 func BlockHeaderToDomainBlockHeader(blockHeader *MsgBlockHeader) externalapi.BlockHeader {
 	return blockheader.NewImmutableBlockHeader(
 		blockHeader.Version,
-		blockHeader.Parents,
+		blockHeader.ParentHashes,
 		blockHeader.HashMerkleRoot,
 		blockHeader.AcceptedIDMerkleRoot,
 		blockHeader.UTXOCommitment,
 		blockHeader.Timestamp.UnixMilliseconds(),
 		blockHeader.Bits,
 		blockHeader.Nonce,
-		blockHeader.DAAScore,
-		blockHeader.BlueScore,
-		blockHeader.BlueWork,
-		blockHeader.PruningPoint,
 	)
 }
 
@@ -95,6 +83,7 @@ func DomainTransactionToMsgTx(domainTransaction *externalapi.DomainTransaction)
 		LockTime:     domainTransaction.LockTime,
 		SubnetworkID: domainTransaction.SubnetworkID,
 		Gas:          domainTransaction.Gas,
+		PayloadHash:  domainTransaction.PayloadHash,
 		Payload:      domainTransaction.Payload,
 	}
 }
@@ -111,7 +100,6 @@ func domainTransactionInputToTxIn(domainTransactionInput *externalapi.DomainTran
 		PreviousOutpoint: *domainOutpointToOutpoint(domainTransactionInput.PreviousOutpoint),
 		SignatureScript:  domainTransactionInput.SignatureScript,
 		Sequence:         domainTransactionInput.Sequence,
-		SigOpCount:       domainTransactionInput.SigOpCount,
 	}
 }
 
@@ -145,6 +133,7 @@ func MsgTxToDomainTransaction(msgTx *MsgTx) *externalapi.DomainTransaction {
 		LockTime:     msgTx.LockTime,
 		SubnetworkID: msgTx.SubnetworkID,
 		Gas:          msgTx.Gas,
+		PayloadHash:  msgTx.PayloadHash,
 		Payload:      payload,
 	}
 }
@@ -160,7 +149,6 @@ func txInToDomainTransactionInput(txIn *TxIn) *externalapi.DomainTransactionInpu
 	return &externalapi.DomainTransactionInput{
 		PreviousOutpoint: *outpointToDomainOutpoint(&txIn.PreviousOutpoint), //TODO
 		SignatureScript:  txIn.SignatureScript,
-		SigOpCount:       txIn.SigOpCount,
 		Sequence:         txIn.Sequence,
 	}
 }
@@ -176,10 +164,18 @@ func outpointToDomainOutpoint(outpoint *Outpoint) *externalapi.DomainOutpoint {
 func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externalapi.DomainTransaction, error) {
 	inputs := make([]*externalapi.DomainTransactionInput, len(rpcTransaction.Inputs))
 	for i, input := range rpcTransaction.Inputs {
-		previousOutpoint, err := RPCOutpointToDomainOutpoint(input.PreviousOutpoint)
+		transactionIDBytes, err := hex.DecodeString(input.PreviousOutpoint.TransactionID)
 		if err != nil {
 			return nil, err
 		}
+		transactionID, err := transactionid.FromBytes(transactionIDBytes)
+		if err != nil {
+			return nil, err
+		}
+		previousOutpoint := &externalapi.DomainOutpoint{
+			TransactionID: *transactionID,
+			Index:         input.PreviousOutpoint.Index,
+		}
 		signatureScript, err := hex.DecodeString(input.SignatureScript)
 		if err != nil {
 			return nil, err
@@ -188,7 +184,6 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 			PreviousOutpoint: *previousOutpoint,
 			SignatureScript:  signatureScript,
 			Sequence:         input.Sequence,
-			SigOpCount:       input.SigOpCount,
 		}
 	}
 	outputs := make([]*externalapi.DomainTransactionOutput, len(rpcTransaction.Outputs))
@@ -203,7 +198,19 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 		}
 	}
 
-	subnetworkID, err := subnetworks.FromString(rpcTransaction.SubnetworkID)
+	subnetworkIDBytes, err := hex.DecodeString(rpcTransaction.SubnetworkID)
+	if err != nil {
+		return nil, err
+	}
+	subnetworkID, err := subnetworks.FromBytes(subnetworkIDBytes)
+	if err != nil {
+		return nil, err
+	}
+	payloadHashBytes, err := hex.DecodeString(rpcTransaction.PayloadHash)
+	if err != nil {
+		return nil, err
+	}
+	payloadHash, err := externalapi.NewDomainHashFromByteSlice(payloadHashBytes)
 	if err != nil {
 		return nil, err
 	}
@@ -219,40 +226,11 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 		LockTime:     rpcTransaction.LockTime,
 		SubnetworkID: *subnetworkID,
 		Gas:          rpcTransaction.LockTime,
+		PayloadHash:  *payloadHash,
 		Payload:      payload,
 	}, nil
 }
 
-// RPCOutpointToDomainOutpoint converts RPCOutpoint to  DomainOutpoint
-func RPCOutpointToDomainOutpoint(outpoint *RPCOutpoint) (*externalapi.DomainOutpoint, error) {
-	transactionID, err := transactionid.FromString(outpoint.TransactionID)
-	if err != nil {
-		return nil, err
-	}
-	return &externalapi.DomainOutpoint{
-		TransactionID: *transactionID,
-		Index:         outpoint.Index,
-	}, nil
-}
-
-// RPCUTXOEntryToUTXOEntry converts RPCUTXOEntry to UTXOEntry
-func RPCUTXOEntryToUTXOEntry(entry *RPCUTXOEntry) (externalapi.UTXOEntry, error) {
-	script, err := hex.DecodeString(entry.ScriptPublicKey.Script)
-	if err != nil {
-		return nil, err
-	}
-
-	return utxo.NewUTXOEntry(
-		entry.Amount,
-		&externalapi.ScriptPublicKey{
-			Script:  script,
-			Version: entry.ScriptPublicKey.Version,
-		},
-		entry.IsCoinbase,
-		entry.BlockDAAScore,
-	), nil
-}
-
 // DomainTransactionToRPCTransaction converts DomainTransactions to RPCTransactions
 func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransaction) *RPCTransaction {
 	inputs := make([]*RPCTransactionInput, len(transaction.Inputs))
@@ -267,7 +245,6 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 			PreviousOutpoint: previousOutpoint,
 			SignatureScript:  signatureScript,
 			Sequence:         input.Sequence,
-			SigOpCount:       input.SigOpCount,
 		}
 	}
 	outputs := make([]*RPCTransactionOutput, len(transaction.Outputs))
@@ -278,7 +255,8 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 			ScriptPublicKey: &RPCScriptPublicKey{Script: scriptPublicKey, Version: output.ScriptPublicKey.Version},
 		}
 	}
-	subnetworkID := transaction.SubnetworkID.String()
+	subnetworkID := hex.EncodeToString(transaction.SubnetworkID[:])
+	payloadHash := transaction.PayloadHash.String()
 	payload := hex.EncodeToString(transaction.Payload)
 	return &RPCTransaction{
 		Version:      transaction.Version,
@@ -287,6 +265,7 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 		LockTime:     transaction.LockTime,
 		SubnetworkID: subnetworkID,
 		Gas:          transaction.LockTime,
+		PayloadHash:  payloadHash,
 		Payload:      payload,
 	}
 }
@@ -298,27 +277,22 @@ func OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs(
 
 	domainOutpointAndUTXOEntryPairs := make([]*externalapi.OutpointAndUTXOEntryPair, len(outpointAndUTXOEntryPairs))
 	for i, outpointAndUTXOEntryPair := range outpointAndUTXOEntryPairs {
-		domainOutpointAndUTXOEntryPairs[i] = outpointAndUTXOEntryPairToDomainOutpointAndUTXOEntryPair(outpointAndUTXOEntryPair)
+		domainOutpointAndUTXOEntryPairs[i] = &externalapi.OutpointAndUTXOEntryPair{
+			Outpoint: &externalapi.DomainOutpoint{
+				TransactionID: outpointAndUTXOEntryPair.Outpoint.TxID,
+				Index:         outpointAndUTXOEntryPair.Outpoint.Index,
+			},
+			UTXOEntry: utxo.NewUTXOEntry(
+				outpointAndUTXOEntryPair.UTXOEntry.Amount,
+				outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey,
+				outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase,
+				outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore,
+			),
+		}
 	}
 	return domainOutpointAndUTXOEntryPairs
 }
 
-func outpointAndUTXOEntryPairToDomainOutpointAndUTXOEntryPair(
-	outpointAndUTXOEntryPair *OutpointAndUTXOEntryPair) *externalapi.OutpointAndUTXOEntryPair {
-	return &externalapi.OutpointAndUTXOEntryPair{
-		Outpoint: &externalapi.DomainOutpoint{
-			TransactionID: outpointAndUTXOEntryPair.Outpoint.TxID,
-			Index:         outpointAndUTXOEntryPair.Outpoint.Index,
-		},
-		UTXOEntry: utxo.NewUTXOEntry(
-			outpointAndUTXOEntryPair.UTXOEntry.Amount,
-			outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey,
-			outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase,
-			outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore,
-		),
-	}
-}
-
 // DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs converts
 // domain OutpointAndUTXOEntryPairs to OutpointAndUTXOEntryPairs
 func DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs(
@@ -335,267 +309,9 @@ func DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs(
 				Amount:          outpointAndUTXOEntryPair.UTXOEntry.Amount(),
 				ScriptPublicKey: outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey(),
 				IsCoinbase:      outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase(),
-				BlockDAAScore:   outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore(),
+				BlockBlueScore:  outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore(),
 			},
 		}
 	}
 	return domainOutpointAndUTXOEntryPairs
 }
-
-// DomainBlockToRPCBlock converts DomainBlocks to RPCBlocks
-func DomainBlockToRPCBlock(block *externalapi.DomainBlock) *RPCBlock {
-	parents := make([]*RPCBlockLevelParents, len(block.Header.Parents()))
-	for i, blockLevelParents := range block.Header.Parents() {
-		parents[i] = &RPCBlockLevelParents{
-			ParentHashes: hashes.ToStrings(blockLevelParents),
-		}
-	}
-	header := &RPCBlockHeader{
-		Version:              uint32(block.Header.Version()),
-		Parents:              parents,
-		HashMerkleRoot:       block.Header.HashMerkleRoot().String(),
-		AcceptedIDMerkleRoot: block.Header.AcceptedIDMerkleRoot().String(),
-		UTXOCommitment:       block.Header.UTXOCommitment().String(),
-		Timestamp:            block.Header.TimeInMilliseconds(),
-		Bits:                 block.Header.Bits(),
-		Nonce:                block.Header.Nonce(),
-		DAAScore:             block.Header.DAAScore(),
-		BlueScore:            block.Header.BlueScore(),
-		BlueWork:             block.Header.BlueWork().Text(16),
-		PruningPoint:         block.Header.PruningPoint().String(),
-	}
-	transactions := make([]*RPCTransaction, len(block.Transactions))
-	for i, transaction := range block.Transactions {
-		transactions[i] = DomainTransactionToRPCTransaction(transaction)
-	}
-	return &RPCBlock{
-		Header:       header,
-		Transactions: transactions,
-	}
-}
-
-// RPCBlockToDomainBlock converts `block` into a DomainBlock
-func RPCBlockToDomainBlock(block *RPCBlock) (*externalapi.DomainBlock, error) {
-	parents := make([]externalapi.BlockLevelParents, len(block.Header.Parents))
-	for i, blockLevelParents := range block.Header.Parents {
-		parents[i] = make(externalapi.BlockLevelParents, len(blockLevelParents.ParentHashes))
-		for j, parentHash := range blockLevelParents.ParentHashes {
-			var err error
-			parents[i][j], err = externalapi.NewDomainHashFromString(parentHash)
-			if err != nil {
-				return nil, err
-			}
-		}
-	}
-	hashMerkleRoot, err := externalapi.NewDomainHashFromString(block.Header.HashMerkleRoot)
-	if err != nil {
-		return nil, err
-	}
-	acceptedIDMerkleRoot, err := externalapi.NewDomainHashFromString(block.Header.AcceptedIDMerkleRoot)
-	if err != nil {
-		return nil, err
-	}
-	utxoCommitment, err := externalapi.NewDomainHashFromString(block.Header.UTXOCommitment)
-	if err != nil {
-		return nil, err
-	}
-	blueWork, success := new(big.Int).SetString(block.Header.BlueWork, 16)
-	if !success {
-		return nil, errors.Errorf("failed to parse blue work: %s", block.Header.BlueWork)
-	}
-	pruningPoint, err := externalapi.NewDomainHashFromString(block.Header.PruningPoint)
-	if err != nil {
-		return nil, err
-	}
-	header := blockheader.NewImmutableBlockHeader(
-		uint16(block.Header.Version),
-		parents,
-		hashMerkleRoot,
-		acceptedIDMerkleRoot,
-		utxoCommitment,
-		block.Header.Timestamp,
-		block.Header.Bits,
-		block.Header.Nonce,
-		block.Header.DAAScore,
-		block.Header.BlueScore,
-		blueWork,
-		pruningPoint)
-	transactions := make([]*externalapi.DomainTransaction, len(block.Transactions))
-	for i, transaction := range block.Transactions {
-		domainTransaction, err := RPCTransactionToDomainTransaction(transaction)
-		if err != nil {
-			return nil, err
-		}
-		transactions[i] = domainTransaction
-	}
-	return &externalapi.DomainBlock{
-		Header:       header,
-		Transactions: transactions,
-	}, nil
-}
-
-// BlockWithTrustedDataToDomainBlockWithTrustedData converts *MsgBlockWithTrustedData to *externalapi.BlockWithTrustedData
-func BlockWithTrustedDataToDomainBlockWithTrustedData(block *MsgBlockWithTrustedData) *externalapi.BlockWithTrustedData {
-	daaWindow := make([]*externalapi.TrustedDataDataDAAHeader, len(block.DAAWindow))
-	for i, daaBlock := range block.DAAWindow {
-		daaWindow[i] = &externalapi.TrustedDataDataDAAHeader{
-			Header:       BlockHeaderToDomainBlockHeader(&daaBlock.Block.Header),
-			GHOSTDAGData: ghostdagDataToDomainGHOSTDAGData(daaBlock.GHOSTDAGData),
-		}
-	}
-
-	ghostdagData := make([]*externalapi.BlockGHOSTDAGDataHashPair, len(block.GHOSTDAGData))
-	for i, datum := range block.GHOSTDAGData {
-		ghostdagData[i] = &externalapi.BlockGHOSTDAGDataHashPair{
-			Hash:         datum.Hash,
-			GHOSTDAGData: ghostdagDataToDomainGHOSTDAGData(datum.GHOSTDAGData),
-		}
-	}
-
-	return &externalapi.BlockWithTrustedData{
-		Block:        MsgBlockToDomainBlock(block.Block),
-		DAAWindow:    daaWindow,
-		GHOSTDAGData: ghostdagData,
-	}
-}
-
-// TrustedDataDataDAABlockV4ToTrustedDataDataDAAHeader converts *TrustedDataDAAHeader to *externalapi.TrustedDataDataDAAHeader
-func TrustedDataDataDAABlockV4ToTrustedDataDataDAAHeader(daaBlock *TrustedDataDAAHeader) *externalapi.TrustedDataDataDAAHeader {
-	return &externalapi.TrustedDataDataDAAHeader{
-		Header:       BlockHeaderToDomainBlockHeader(daaBlock.Header),
-		GHOSTDAGData: ghostdagDataToDomainGHOSTDAGData(daaBlock.GHOSTDAGData),
-	}
-}
-
-// GHOSTDAGHashPairToDomainGHOSTDAGHashPair converts *BlockGHOSTDAGDataHashPair to *externalapi.BlockGHOSTDAGDataHashPair
-func GHOSTDAGHashPairToDomainGHOSTDAGHashPair(datum *BlockGHOSTDAGDataHashPair) *externalapi.BlockGHOSTDAGDataHashPair {
-	return &externalapi.BlockGHOSTDAGDataHashPair{
-		Hash:         datum.Hash,
-		GHOSTDAGData: ghostdagDataToDomainGHOSTDAGData(datum.GHOSTDAGData),
-	}
-}
-
-func ghostdagDataToDomainGHOSTDAGData(data *BlockGHOSTDAGData) *externalapi.BlockGHOSTDAGData {
-	bluesAnticoneSizes := make(map[externalapi.DomainHash]externalapi.KType, len(data.BluesAnticoneSizes))
-	for _, pair := range data.BluesAnticoneSizes {
-		bluesAnticoneSizes[*pair.BlueHash] = pair.AnticoneSize
-	}
-	return externalapi.NewBlockGHOSTDAGData(
-		data.BlueScore,
-		data.BlueWork,
-		data.SelectedParent,
-		data.MergeSetBlues,
-		data.MergeSetReds,
-		bluesAnticoneSizes,
-	)
-}
-
-func domainGHOSTDAGDataGHOSTDAGData(data *externalapi.BlockGHOSTDAGData) *BlockGHOSTDAGData {
-	bluesAnticoneSizes := make([]*BluesAnticoneSizes, 0, len(data.BluesAnticoneSizes()))
-	for blueHash, anticoneSize := range data.BluesAnticoneSizes() {
-		blueHashCopy := blueHash
-		bluesAnticoneSizes = append(bluesAnticoneSizes, &BluesAnticoneSizes{
-			BlueHash:     &blueHashCopy,
-			AnticoneSize: anticoneSize,
-		})
-	}
-
-	return &BlockGHOSTDAGData{
-		BlueScore:          data.BlueScore(),
-		BlueWork:           data.BlueWork(),
-		SelectedParent:     data.SelectedParent(),
-		MergeSetBlues:      data.MergeSetBlues(),
-		MergeSetReds:       data.MergeSetReds(),
-		BluesAnticoneSizes: bluesAnticoneSizes,
-	}
-}
-
-// DomainBlockWithTrustedDataToBlockWithTrustedData converts *externalapi.BlockWithTrustedData to *MsgBlockWithTrustedData
-func DomainBlockWithTrustedDataToBlockWithTrustedData(block *externalapi.BlockWithTrustedData) *MsgBlockWithTrustedData {
-	daaWindow := make([]*TrustedDataDataDAABlock, len(block.DAAWindow))
-	for i, daaBlock := range block.DAAWindow {
-		daaWindow[i] = &TrustedDataDataDAABlock{
-			Block: &MsgBlock{
-				Header: *DomainBlockHeaderToBlockHeader(daaBlock.Header),
-			},
-			GHOSTDAGData: domainGHOSTDAGDataGHOSTDAGData(daaBlock.GHOSTDAGData),
-		}
-	}
-
-	ghostdagData := make([]*BlockGHOSTDAGDataHashPair, len(block.GHOSTDAGData))
-	for i, datum := range block.GHOSTDAGData {
-		ghostdagData[i] = &BlockGHOSTDAGDataHashPair{
-			Hash:         datum.Hash,
-			GHOSTDAGData: domainGHOSTDAGDataGHOSTDAGData(datum.GHOSTDAGData),
-		}
-	}
-
-	return &MsgBlockWithTrustedData{
-		Block:        DomainBlockToMsgBlock(block.Block),
-		DAAScore:     block.Block.Header.DAAScore(),
-		DAAWindow:    daaWindow,
-		GHOSTDAGData: ghostdagData,
-	}
-}
-
-// DomainBlockWithTrustedDataToBlockWithTrustedDataV4 converts a set of *externalapi.DomainBlock, daa window indices and ghostdag data indices
-// to *MsgBlockWithTrustedDataV4
-func DomainBlockWithTrustedDataToBlockWithTrustedDataV4(block *externalapi.DomainBlock, daaWindowIndices, ghostdagDataIndices []uint64) *MsgBlockWithTrustedDataV4 {
-	return &MsgBlockWithTrustedDataV4{
-		Block:               DomainBlockToMsgBlock(block),
-		DAAWindowIndices:    daaWindowIndices,
-		GHOSTDAGDataIndices: ghostdagDataIndices,
-	}
-}
-
-// DomainTrustedDataToTrustedData converts *externalapi.BlockWithTrustedData to *MsgBlockWithTrustedData
-func DomainTrustedDataToTrustedData(domainDAAWindow []*externalapi.TrustedDataDataDAAHeader, domainGHOSTDAGData []*externalapi.BlockGHOSTDAGDataHashPair) *MsgTrustedData {
-	daaWindow := make([]*TrustedDataDAAHeader, len(domainDAAWindow))
-	for i, daaBlock := range domainDAAWindow {
-		daaWindow[i] = &TrustedDataDAAHeader{
-			Header:       DomainBlockHeaderToBlockHeader(daaBlock.Header),
-			GHOSTDAGData: domainGHOSTDAGDataGHOSTDAGData(daaBlock.GHOSTDAGData),
-		}
-	}
-
-	ghostdagData := make([]*BlockGHOSTDAGDataHashPair, len(domainGHOSTDAGData))
-	for i, datum := range domainGHOSTDAGData {
-		ghostdagData[i] = &BlockGHOSTDAGDataHashPair{
-			Hash:         datum.Hash,
-			GHOSTDAGData: domainGHOSTDAGDataGHOSTDAGData(datum.GHOSTDAGData),
-		}
-	}
-
-	return &MsgTrustedData{
-		DAAWindow:    daaWindow,
-		GHOSTDAGData: ghostdagData,
-	}
-}
-
-// MsgPruningPointProofToDomainPruningPointProof converts *MsgPruningPointProof to *externalapi.PruningPointProof
-func MsgPruningPointProofToDomainPruningPointProof(pruningPointProofMessage *MsgPruningPointProof) *externalapi.PruningPointProof {
-	headers := make([][]externalapi.BlockHeader, len(pruningPointProofMessage.Headers))
-	for blockLevel, blockLevelParents := range pruningPointProofMessage.Headers {
-		headers[blockLevel] = make([]externalapi.BlockHeader, len(blockLevelParents))
-		for i, header := range blockLevelParents {
-			headers[blockLevel][i] = BlockHeaderToDomainBlockHeader(header)
-		}
-	}
-	return &externalapi.PruningPointProof{
-		Headers: headers,
-	}
-}
-
-// DomainPruningPointProofToMsgPruningPointProof converts *externalapi.PruningPointProof to *MsgPruningPointProof
-func DomainPruningPointProofToMsgPruningPointProof(pruningPointProof *externalapi.PruningPointProof) *MsgPruningPointProof {
-	headers := make([][]*MsgBlockHeader, len(pruningPointProof.Headers))
-	for blockLevel, blockLevelParents := range pruningPointProof.Headers {
-		headers[blockLevel] = make([]*MsgBlockHeader, len(blockLevelParents))
-		for i, header := range blockLevelParents {
-			headers[blockLevel][i] = DomainBlockHeaderToBlockHeader(header)
-		}
-	}
-	return &MsgPruningPointProof{
-		Headers: headers,
-	}
-}

app/appmessage/error.go

@@ -38,10 +38,6 @@ type RPCError struct {
 	Message string
 }
 
-func (err RPCError) Error() string {
-	return err.Message
-}
-
 // RPCErrorf formats according to a format specifier and returns the string
 // as an RPCError.
 func RPCErrorf(format string, args ...interface{}) *RPCError {

app/appmessage/message.go

@@ -45,30 +45,24 @@ const (
 	CmdRequestRelayBlocks
 	CmdInvTransaction
 	CmdRequestTransactions
+	CmdIBDBlock
 	CmdDoneHeaders
 	CmdTransactionNotFound
 	CmdReject
+	CmdHeader
 	CmdRequestNextHeaders
-	CmdRequestPruningPointUTXOSet
+	CmdRequestPruningPointUTXOSetAndBlock
 	CmdPruningPointUTXOSetChunk
+	CmdRequestIBDBlocks
 	CmdUnexpectedPruningPoint
+	CmdRequestPruningPointHash
+	CmdPruningPointHash
 	CmdIBDBlockLocator
 	CmdIBDBlockLocatorHighestHash
 	CmdIBDBlockLocatorHighestHashNotFound
 	CmdBlockHeaders
 	CmdRequestNextPruningPointUTXOSetChunk
 	CmdDonePruningPointUTXOSetChunks
-	CmdBlockWithTrustedData
-	CmdDoneBlocksWithTrustedData
-	CmdRequestPruningPointAndItsAnticone
-	CmdIBDBlock
-	CmdRequestIBDBlocks
-	CmdPruningPoints
-	CmdRequestPruningPointProof
-	CmdPruningPointProof
-	CmdReady
-	CmdTrustedData
-	CmdBlockWithTrustedDataV4
 
 	// rpc
 	CmdGetCurrentNetworkRequestMessage
@@ -123,12 +117,8 @@ const (
 	CmdNotifyUTXOsChangedRequestMessage
 	CmdNotifyUTXOsChangedResponseMessage
 	CmdUTXOsChangedNotificationMessage
-	CmdStopNotifyingUTXOsChangedRequestMessage
-	CmdStopNotifyingUTXOsChangedResponseMessage
 	CmdGetUTXOsByAddressesRequestMessage
 	CmdGetUTXOsByAddressesResponseMessage
-	CmdGetBalanceByAddressRequestMessage
-	CmdGetBalanceByAddressResponseMessage
 	CmdGetVirtualSelectedParentBlueScoreRequestMessage
 	CmdGetVirtualSelectedParentBlueScoreResponseMessage
 	CmdNotifyVirtualSelectedParentBlueScoreChangedRequestMessage
@@ -140,18 +130,6 @@ const (
 	CmdUnbanResponseMessage
 	CmdGetInfoRequestMessage
 	CmdGetInfoResponseMessage
-	CmdNotifyPruningPointUTXOSetOverrideRequestMessage
-	CmdNotifyPruningPointUTXOSetOverrideResponseMessage
-	CmdPruningPointUTXOSetOverrideNotificationMessage
-	CmdStopNotifyingPruningPointUTXOSetOverrideRequestMessage
-	CmdStopNotifyingPruningPointUTXOSetOverrideResponseMessage
-	CmdEstimateNetworkHashesPerSecondRequestMessage
-	CmdEstimateNetworkHashesPerSecondResponseMessage
-	CmdNotifyVirtualDaaScoreChangedRequestMessage
-	CmdNotifyVirtualDaaScoreChangedResponseMessage
-	CmdVirtualDaaScoreChangedNotificationMessage
-	CmdGetBalancesByAddressesRequestMessage
-	CmdGetBalancesByAddressesResponseMessage
 )
 
 // ProtocolMessageCommandToString maps all MessageCommands to their string representation
@@ -160,7 +138,7 @@ var ProtocolMessageCommandToString = map[MessageCommand]string{
 	CmdVerAck:                              "VerAck",
 	CmdRequestAddresses:                    "RequestAddresses",
 	CmdAddresses:                           "Addresses",
-	CmdRequestHeaders:                      "CmdRequestHeaders",
+	CmdRequestHeaders:                      "RequestHeaders",
 	CmdBlock:                               "Block",
 	CmdTx:                                  "Tx",
 	CmdPing:                                "Ping",
@@ -171,30 +149,24 @@ var ProtocolMessageCommandToString = map[MessageCommand]string{
 	CmdRequestRelayBlocks:                  "RequestRelayBlocks",
 	CmdInvTransaction:                      "InvTransaction",
 	CmdRequestTransactions:                 "RequestTransactions",
+	CmdIBDBlock:                            "IBDBlock",
 	CmdDoneHeaders:                         "DoneHeaders",
 	CmdTransactionNotFound:                 "TransactionNotFound",
 	CmdReject:                              "Reject",
+	CmdHeader:                              "Header",
 	CmdRequestNextHeaders:                  "RequestNextHeaders",
-	CmdRequestPruningPointUTXOSet:          "RequestPruningPointUTXOSet",
+	CmdRequestPruningPointUTXOSetAndBlock:  "RequestPruningPointUTXOSetAndBlock",
 	CmdPruningPointUTXOSetChunk:            "PruningPointUTXOSetChunk",
+	CmdRequestIBDBlocks:                    "RequestIBDBlocks",
 	CmdUnexpectedPruningPoint:              "UnexpectedPruningPoint",
+	CmdRequestPruningPointHash:             "RequestPruningPointHashHash",
+	CmdPruningPointHash:                    "PruningPointHash",
 	CmdIBDBlockLocator:                     "IBDBlockLocator",
 	CmdIBDBlockLocatorHighestHash:          "IBDBlockLocatorHighestHash",
 	CmdIBDBlockLocatorHighestHashNotFound:  "IBDBlockLocatorHighestHashNotFound",
 	CmdBlockHeaders:                        "BlockHeaders",
 	CmdRequestNextPruningPointUTXOSetChunk: "RequestNextPruningPointUTXOSetChunk",
 	CmdDonePruningPointUTXOSetChunks:       "DonePruningPointUTXOSetChunks",
-	CmdBlockWithTrustedData:                "BlockWithTrustedData",
-	CmdDoneBlocksWithTrustedData:           "DoneBlocksWithTrustedData",
-	CmdRequestPruningPointAndItsAnticone:   "RequestPruningPointAndItsAnticoneHeaders",
-	CmdIBDBlock:                            "IBDBlock",
-	CmdRequestIBDBlocks:                    "RequestIBDBlocks",
-	CmdPruningPoints:                       "PruningPoints",
-	CmdRequestPruningPointProof:            "RequestPruningPointProof",
-	CmdPruningPointProof:                   "PruningPointProof",
-	CmdReady:                               "Ready",
-	CmdTrustedData:                         "TrustedData",
-	CmdBlockWithTrustedDataV4:              "BlockWithTrustedDataV4",
 }
 
 // RPCMessageCommandToString maps all MessageCommands to their string representation
@@ -249,12 +221,8 @@ var RPCMessageCommandToString = map[MessageCommand]string{
 	CmdNotifyUTXOsChangedRequestMessage:                           "NotifyUTXOsChangedRequest",
 	CmdNotifyUTXOsChangedResponseMessage:                          "NotifyUTXOsChangedResponse",
 	CmdUTXOsChangedNotificationMessage:                            "UTXOsChangedNotification",
-	CmdStopNotifyingUTXOsChangedRequestMessage:                    "StopNotifyingUTXOsChangedRequest",
-	CmdStopNotifyingUTXOsChangedResponseMessage:                   "StopNotifyingUTXOsChangedResponse",
 	CmdGetUTXOsByAddressesRequestMessage:                          "GetUTXOsByAddressesRequest",
 	CmdGetUTXOsByAddressesResponseMessage:                         "GetUTXOsByAddressesResponse",
-	CmdGetBalanceByAddressRequestMessage:                          "GetBalanceByAddressRequest",
-	CmdGetBalanceByAddressResponseMessage:                         "GetBalancesByAddressResponse",
 	CmdGetVirtualSelectedParentBlueScoreRequestMessage:            "GetVirtualSelectedParentBlueScoreRequest",
 	CmdGetVirtualSelectedParentBlueScoreResponseMessage:           "GetVirtualSelectedParentBlueScoreResponse",
 	CmdNotifyVirtualSelectedParentBlueScoreChangedRequestMessage:  "NotifyVirtualSelectedParentBlueScoreChangedRequest",
@@ -264,20 +232,8 @@ var RPCMessageCommandToString = map[MessageCommand]string{
 	CmdBanResponseMessage:                                         "BanResponse",
 	CmdUnbanRequestMessage:                                        "UnbanRequest",
 	CmdUnbanResponseMessage:                                       "UnbanResponse",
-	CmdGetInfoRequestMessage:                                      "GetInfoRequest",
+	CmdGetInfoRequestMessage:                                      "GetInfoRequestMessage",
-	CmdGetInfoResponseMessage:                                     "GeInfoResponse",
+	CmdGetInfoResponseMessage:                                     "GeInfoResponseMessage",
-	CmdNotifyPruningPointUTXOSetOverrideRequestMessage:            "NotifyPruningPointUTXOSetOverrideRequest",
-	CmdNotifyPruningPointUTXOSetOverrideResponseMessage:           "NotifyPruningPointUTXOSetOverrideResponse",
-	CmdPruningPointUTXOSetOverrideNotificationMessage:             "PruningPointUTXOSetOverrideNotification",
-	CmdStopNotifyingPruningPointUTXOSetOverrideRequestMessage:     "StopNotifyingPruningPointUTXOSetOverrideRequest",
-	CmdStopNotifyingPruningPointUTXOSetOverrideResponseMessage:    "StopNotifyingPruningPointUTXOSetOverrideResponse",
-	CmdEstimateNetworkHashesPerSecondRequestMessage:               "EstimateNetworkHashesPerSecondRequest",
-	CmdEstimateNetworkHashesPerSecondResponseMessage:              "EstimateNetworkHashesPerSecondResponse",
-	CmdNotifyVirtualDaaScoreChangedRequestMessage:                 "NotifyVirtualDaaScoreChangedRequest",
-	CmdNotifyVirtualDaaScoreChangedResponseMessage:                "NotifyVirtualDaaScoreChangedResponse",
-	CmdVirtualDaaScoreChangedNotificationMessage:                  "VirtualDaaScoreChangedNotification",
-	CmdGetBalancesByAddressesRequestMessage:                       "GetBalancesByAddressesRequest",
-	CmdGetBalancesByAddressesResponseMessage:                      "GetBalancesByAddressesResponse",
 }
 
 // Message is an interface that describes a kaspa message. A type that

app/appmessage/p2p_msgblock.go

@@ -15,6 +15,19 @@ import (
 // backing array multiple times.
 const defaultTransactionAlloc = 2048
 
+// MaxMassAcceptedByBlock is the maximum total transaction mass a block may accept.
+const MaxMassAcceptedByBlock = 10000000
+
+// MaxMassPerTx is the maximum total mass a transaction may have.
+const MaxMassPerTx = MaxMassAcceptedByBlock / 2
+
+// MaxTxPerBlock is the maximum number of transactions that could
+// possibly fit into a block.
+const MaxTxPerBlock = (MaxMassAcceptedByBlock / minTxPayload) + 1
+
+// MaxBlockParents is the maximum allowed number of parents for block.
+const MaxBlockParents = 10
+
 // TxLoc holds locator data for the offset and length of where a transaction is
 // located within a MsgBlock data buffer.
 type TxLoc struct {

app/appmessage/p2p_msgblock_test.go

@@ -18,21 +18,16 @@ import (
 
 // TestBlock tests the MsgBlock API.
 func TestBlock(t *testing.T) {
-	pver := uint32(4)
+	pver := ProtocolVersion
 
 	// Block 1 header.
-	parents := blockOne.Header.Parents
+	parentHashes := blockOne.Header.ParentHashes
 	hashMerkleRoot := blockOne.Header.HashMerkleRoot
 	acceptedIDMerkleRoot := blockOne.Header.AcceptedIDMerkleRoot
 	utxoCommitment := blockOne.Header.UTXOCommitment
 	bits := blockOne.Header.Bits
 	nonce := blockOne.Header.Nonce
-	daaScore := blockOne.Header.DAAScore
+	bh := NewBlockHeader(1, parentHashes, hashMerkleRoot, acceptedIDMerkleRoot, utxoCommitment, bits, nonce)
-	blueScore := blockOne.Header.BlueScore
-	blueWork := blockOne.Header.BlueWork
-	pruningPoint := blockOne.Header.PruningPoint
-	bh := NewBlockHeader(1, parents, hashMerkleRoot, acceptedIDMerkleRoot, utxoCommitment, bits, nonce,
-		daaScore, blueScore, blueWork, pruningPoint)
 
 	// Ensure the command is expected value.
 	wantCmd := MessageCommand(5)
@@ -136,7 +131,7 @@ func TestConvertToPartial(t *testing.T) {
 var blockOne = MsgBlock{
 	Header: MsgBlockHeader{
 		Version:              0,
-		Parents:              []externalapi.BlockLevelParents{[]*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash}},
+		ParentHashes:         []*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash},
 		HashMerkleRoot:       mainnetGenesisMerkleRoot,
 		AcceptedIDMerkleRoot: exampleAcceptedIDMerkleRoot,
 		UTXOCommitment:       exampleUTXOCommitment,

app/appmessage/p2p_msgblockheader.go

@@ -5,12 +5,13 @@
 package appmessage
 
 import (
-	"math/big"
+	"math"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
 
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/util/mstime"
+	"github.com/pkg/errors"
 )
 
 // BaseBlockHeaderPayload is the base number of bytes a block header can be,
@@ -38,8 +39,8 @@ type MsgBlockHeader struct {
 	// Version of the block. This is not the same as the protocol version.
 	Version uint16
 
-	// Parents are the parent block hashes of the block in the DAG per superblock level.
+	// Hashes of the parent block headers in the blockDAG.
-	Parents []externalapi.BlockLevelParents
+	ParentHashes []*externalapi.DomainHash
 
 	// HashMerkleRoot is the merkle tree reference to hash of all transactions for the block.
 	HashMerkleRoot *externalapi.DomainHash
@@ -59,16 +60,15 @@ type MsgBlockHeader struct {
 
 	// Nonce used to generate the block.
 	Nonce uint64
+}
 
-	// DAASCore is the DAA score of the block.
+// NumParentBlocks return the number of entries in ParentHashes
-	DAAScore uint64
+func (h *MsgBlockHeader) NumParentBlocks() byte {
-
+	numParents := len(h.ParentHashes)
-	BlueScore uint64
+	if numParents > math.MaxUint8 {
-
+		panic(errors.Errorf("number of parents is %d, which is more than one byte can fit", numParents))
-	// BlueWork is the blue work of the block.
+	}
-	BlueWork *big.Int
+	return byte(numParents)
-
-	PruningPoint *externalapi.DomainHash
 }
 
 // BlockHash computes the block identifier hash for the given block header.
@@ -76,27 +76,33 @@ func (h *MsgBlockHeader) BlockHash() *externalapi.DomainHash {
 	return consensushashing.HeaderHash(BlockHeaderToDomainBlockHeader(h))
 }
 
+// IsGenesis returns true iff this block is a genesis block
+func (h *MsgBlockHeader) IsGenesis() bool {
+	return h.NumParentBlocks() == 0
+}
+
+// Command returns the protocol command string for the message. This is part
+// of the Message interface implementation.
+func (h *MsgBlockHeader) Command() MessageCommand {
+	return CmdHeader
+}
+
 // NewBlockHeader returns a new MsgBlockHeader using the provided version, previous
 // block hash, hash merkle root, accepted ID merkle root, difficulty bits, and nonce used to generate the
 // block with defaults or calclulated values for the remaining fields.
-func NewBlockHeader(version uint16, parents []externalapi.BlockLevelParents, hashMerkleRoot *externalapi.DomainHash,
+func NewBlockHeader(version uint16, parentHashes []*externalapi.DomainHash, hashMerkleRoot *externalapi.DomainHash,
-	acceptedIDMerkleRoot *externalapi.DomainHash, utxoCommitment *externalapi.DomainHash, bits uint32, nonce,
+	acceptedIDMerkleRoot *externalapi.DomainHash, utxoCommitment *externalapi.DomainHash, bits uint32, nonce uint64) *MsgBlockHeader {
-	daaScore, blueScore uint64, blueWork *big.Int, pruningPoint *externalapi.DomainHash) *MsgBlockHeader {
 
 	// Limit the timestamp to one millisecond precision since the protocol
 	// doesn't support better.
 	return &MsgBlockHeader{
 		Version:              version,
-		Parents:              parents,
+		ParentHashes:         parentHashes,
 		HashMerkleRoot:       hashMerkleRoot,
 		AcceptedIDMerkleRoot: acceptedIDMerkleRoot,
 		UTXOCommitment:       utxoCommitment,
 		Timestamp:            mstime.Now(),
 		Bits:                 bits,
 		Nonce:                nonce,
-		DAAScore:             daaScore,
-		BlueScore:            blueScore,
-		BlueWork:             blueWork,
-		PruningPoint:         pruningPoint,
 	}
 }

app/appmessage/p2p_msgblockheader_test.go

@@ -5,34 +5,33 @@
 package appmessage
 
 import (
-	"math/big"
 	"reflect"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/util/mstime"
+	"github.com/kaspanet/kaspad/util/random"
 )
 
 // TestBlockHeader tests the MsgBlockHeader API.
 func TestBlockHeader(t *testing.T) {
-	nonce := uint64(0xba4d87a69924a93d)
+	nonce, err := random.Uint64()
+	if err != nil {
+		t.Errorf("random.Uint64: Error generating nonce: %v", err)
+	}
 
-	parents := []externalapi.BlockLevelParents{[]*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash}}
+	hashes := []*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash}
 
 	merkleHash := mainnetGenesisMerkleRoot
 	acceptedIDMerkleRoot := exampleAcceptedIDMerkleRoot
 	bits := uint32(0x1d00ffff)
-	daaScore := uint64(123)
+	bh := NewBlockHeader(1, hashes, merkleHash, acceptedIDMerkleRoot, exampleUTXOCommitment, bits, nonce)
-	blueScore := uint64(456)
-	blueWork := big.NewInt(789)
-	pruningPoint := simnetGenesisHash
-	bh := NewBlockHeader(1, parents, merkleHash, acceptedIDMerkleRoot, exampleUTXOCommitment, bits, nonce,
-		daaScore, blueScore, blueWork, pruningPoint)
 
 	// Ensure we get the same data back out.
-	if !reflect.DeepEqual(bh.Parents, parents) {
+	if !reflect.DeepEqual(bh.ParentHashes, hashes) {
-		t.Errorf("NewBlockHeader: wrong parents - got %v, want %v",
+		t.Errorf("NewBlockHeader: wrong prev hashes - got %v, want %v",
-			spew.Sprint(bh.Parents), spew.Sprint(parents))
+			spew.Sprint(bh.ParentHashes), spew.Sprint(hashes))
 	}
 	if bh.HashMerkleRoot != merkleHash {
 		t.Errorf("NewBlockHeader: wrong merkle root - got %v, want %v",
@@ -46,20 +45,44 @@ func TestBlockHeader(t *testing.T) {
 		t.Errorf("NewBlockHeader: wrong nonce - got %v, want %v",
 			bh.Nonce, nonce)
 	}
-	if bh.DAAScore != daaScore {
+}
-		t.Errorf("NewBlockHeader: wrong daaScore - got %v, want %v",
+
-			bh.DAAScore, daaScore)
+func TestIsGenesis(t *testing.T) {
+	nonce := uint64(123123) // 0x1e0f3
+	bits := uint32(0x1d00ffff)
+	timestamp := mstime.UnixMilliseconds(0x495fab29000)
+
+	baseBlockHdr := &MsgBlockHeader{
+		Version:        1,
+		ParentHashes:   []*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash},
+		HashMerkleRoot: mainnetGenesisMerkleRoot,
+		Timestamp:      timestamp,
+		Bits:           bits,
+		Nonce:          nonce,
 	}
-	if bh.BlueScore != blueScore {
+	genesisBlockHdr := &MsgBlockHeader{
-		t.Errorf("NewBlockHeader: wrong blueScore - got %v, want %v",
+		Version:        1,
-			bh.BlueScore, blueScore)
+		ParentHashes:   []*externalapi.DomainHash{},
+		HashMerkleRoot: mainnetGenesisMerkleRoot,
+		Timestamp:      timestamp,
+		Bits:           bits,
+		Nonce:          nonce,
 	}
-	if bh.BlueWork != blueWork {
+
-		t.Errorf("NewBlockHeader: wrong blueWork - got %v, want %v",
+	tests := []struct {
-			bh.BlueWork, blueWork)
+		in        *MsgBlockHeader // Block header to encode
+		isGenesis bool            // Expected result for call of .IsGenesis
+	}{
+		{genesisBlockHdr, true},
+		{baseBlockHdr, false},
 	}
-	if !bh.PruningPoint.Equal(pruningPoint) {
+
-		t.Errorf("NewBlockHeader: wrong pruningPoint - got %v, want %v",
+	t.Logf("Running %d tests", len(tests))
-			bh.PruningPoint, pruningPoint)
+	for i, test := range tests {
+		isGenesis := test.in.IsGenesis()
+		if isGenesis != test.isGenesis {
+			t.Errorf("MsgBlockHeader.IsGenesis: #%d got: %t, want: %t",
+				i, isGenesis, test.isGenesis)
+		}
 	}
 }

app/appmessage/p2p_msgblockwithtrusteddata.go

@@ -1,54 +0,0 @@
-package appmessage
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-	"math/big"
-)
-
-// MsgBlockWithTrustedData represents a kaspa BlockWithTrustedData message
-type MsgBlockWithTrustedData struct {
-	baseMessage
-
-	Block        *MsgBlock
-	DAAScore     uint64
-	DAAWindow    []*TrustedDataDataDAABlock
-	GHOSTDAGData []*BlockGHOSTDAGDataHashPair
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgBlockWithTrustedData) Command() MessageCommand {
-	return CmdBlockWithTrustedData
-}
-
-// NewMsgBlockWithTrustedData returns a new MsgBlockWithTrustedData.
-func NewMsgBlockWithTrustedData() *MsgBlockWithTrustedData {
-	return &MsgBlockWithTrustedData{}
-}
-
-// TrustedDataDataDAABlock is an appmessage representation of externalapi.TrustedDataDataDAABlock
-type TrustedDataDataDAABlock struct {
-	Block        *MsgBlock
-	GHOSTDAGData *BlockGHOSTDAGData
-}
-
-// BlockGHOSTDAGData is an appmessage representation of externalapi.BlockGHOSTDAGData
-type BlockGHOSTDAGData struct {
-	BlueScore          uint64
-	BlueWork           *big.Int
-	SelectedParent     *externalapi.DomainHash
-	MergeSetBlues      []*externalapi.DomainHash
-	MergeSetReds       []*externalapi.DomainHash
-	BluesAnticoneSizes []*BluesAnticoneSizes
-}
-
-// BluesAnticoneSizes is an appmessage representation of the BluesAnticoneSizes part of GHOSTDAG data.
-type BluesAnticoneSizes struct {
-	BlueHash     *externalapi.DomainHash
-	AnticoneSize externalapi.KType
-}
-
-// BlockGHOSTDAGDataHashPair is an appmessage representation of externalapi.BlockGHOSTDAGDataHashPair
-type BlockGHOSTDAGDataHashPair struct {
-	Hash         *externalapi.DomainHash
-	GHOSTDAGData *BlockGHOSTDAGData
-}

app/appmessage/p2p_msgblockwithtrusteddatav4.go

@@ -1,20 +0,0 @@
-package appmessage
-
-// MsgBlockWithTrustedDataV4 represents a kaspa BlockWithTrustedDataV4 message
-type MsgBlockWithTrustedDataV4 struct {
-	baseMessage
-
-	Block               *MsgBlock
-	DAAWindowIndices    []uint64
-	GHOSTDAGDataIndices []uint64
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgBlockWithTrustedDataV4) Command() MessageCommand {
-	return CmdBlockWithTrustedDataV4
-}
-
-// NewMsgBlockWithTrustedDataV4 returns a new MsgBlockWithTrustedDataV4.
-func NewMsgBlockWithTrustedDataV4() *MsgBlockWithTrustedDataV4 {
-	return &MsgBlockWithTrustedDataV4{}
-}

app/appmessage/p2p_msgdoneblockswithmetadata.go

@@ -1,21 +0,0 @@
-package appmessage
-
-// MsgDoneBlocksWithTrustedData implements the Message interface and represents a kaspa
-// DoneBlocksWithTrustedData message
-//
-// This message has no payload.
-type MsgDoneBlocksWithTrustedData struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message. This is part
-// of the Message interface implementation.
-func (msg *MsgDoneBlocksWithTrustedData) Command() MessageCommand {
-	return CmdDoneBlocksWithTrustedData
-}
-
-// NewMsgDoneBlocksWithTrustedData returns a new kaspa DoneBlocksWithTrustedData message that conforms to the
-// Message interface.
-func NewMsgDoneBlocksWithTrustedData() *MsgDoneBlocksWithTrustedData {
-	return &MsgDoneBlocksWithTrustedData{}
-}

app/appmessage/p2p_msgdrequestpruningpointanditsanticoneheaders.go

@@ -1,16 +0,0 @@
-package appmessage
-
-// MsgRequestPruningPointAndItsAnticone represents a kaspa RequestPruningPointAndItsAnticone message
-type MsgRequestPruningPointAndItsAnticone struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgRequestPruningPointAndItsAnticone) Command() MessageCommand {
-	return CmdRequestPruningPointAndItsAnticone
-}
-
-// NewMsgRequestPruningPointAndItsAnticone returns a new MsgRequestPruningPointAndItsAnticone.
-func NewMsgRequestPruningPointAndItsAnticone() *MsgRequestPruningPointAndItsAnticone {
-	return &MsgRequestPruningPointAndItsAnticone{}
-}

app/appmessage/p2p_msgibdblock_test.go

@@ -0,0 +1,65 @@
+// Copyright (c) 2013-2016 The btcsuite developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package appmessage
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/davecgh/go-spew/spew"
+)
+
+// TestIBDBlock tests the MsgIBDBlock API.
+func TestIBDBlock(t *testing.T) {
+	pver := ProtocolVersion
+
+	// Block 1 header.
+	parentHashes := blockOne.Header.ParentHashes
+	hashMerkleRoot := blockOne.Header.HashMerkleRoot
+	acceptedIDMerkleRoot := blockOne.Header.AcceptedIDMerkleRoot
+	utxoCommitment := blockOne.Header.UTXOCommitment
+	bits := blockOne.Header.Bits
+	nonce := blockOne.Header.Nonce
+	bh := NewBlockHeader(1, parentHashes, hashMerkleRoot, acceptedIDMerkleRoot, utxoCommitment, bits, nonce)
+
+	// Ensure the command is expected value.
+	wantCmd := MessageCommand(15)
+	msg := NewMsgIBDBlock(NewMsgBlock(bh))
+	if cmd := msg.Command(); cmd != wantCmd {
+		t.Errorf("NewMsgIBDBlock: wrong command - got %v want %v",
+			cmd, wantCmd)
+	}
+
+	// Ensure max payload is expected value for latest protocol version.
+	wantPayload := uint32(1024 * 1024 * 32)
+	maxPayload := msg.MaxPayloadLength(pver)
+	if maxPayload != wantPayload {
+		t.Errorf("MaxPayloadLength: wrong max payload length for "+
+			"protocol version %d - got %v, want %v", pver,
+			maxPayload, wantPayload)
+	}
+
+	// Ensure we get the same block header data back out.
+	if !reflect.DeepEqual(&msg.Header, bh) {
+		t.Errorf("NewMsgIBDBlock: wrong block header - got %v, want %v",
+			spew.Sdump(&msg.Header), spew.Sdump(bh))
+	}
+
+	// Ensure transactions are added properly.
+	tx := blockOne.Transactions[0].Copy()
+	msg.AddTransaction(tx)
+	if !reflect.DeepEqual(msg.Transactions, blockOne.Transactions) {
+		t.Errorf("AddTransaction: wrong transactions - got %v, want %v",
+			spew.Sdump(msg.Transactions),
+			spew.Sdump(blockOne.Transactions))
+	}
+
+	// Ensure transactions are properly cleared.
+	msg.ClearTransactions()
+	if len(msg.Transactions) != 0 {
+		t.Errorf("ClearTransactions: wrong transactions - got %v, want %v",
+			len(msg.Transactions), 0)
+	}
+}

app/appmessage/p2p_msgping_test.go

@@ -6,12 +6,17 @@ package appmessage
 
 import (
 	"testing"
+
+	"github.com/kaspanet/kaspad/util/random"
 )
 
 // TestPing tests the MsgPing API against the latest protocol version.
 func TestPing(t *testing.T) {
 	// Ensure we get the same nonce back out.
-	nonce := uint64(0x61c2c5535902862)
+	nonce, err := random.Uint64()
+	if err != nil {
+		t.Errorf("random.Uint64: Error generating nonce: %v", err)
+	}
 	msg := NewMsgPing(nonce)
 	if msg.Nonce != nonce {
 		t.Errorf("NewMsgPing: wrong nonce - got %v, want %v",

app/appmessage/p2p_msgpong_test.go

@@ -6,11 +6,16 @@ package appmessage
 
 import (
 	"testing"
+
+	"github.com/kaspanet/kaspad/util/random"
 )
 
 // TestPongLatest tests the MsgPong API against the latest protocol version.
 func TestPongLatest(t *testing.T) {
-	nonce := uint64(0x1a05b581a5182c)
+	nonce, err := random.Uint64()
+	if err != nil {
+		t.Errorf("random.Uint64: error generating nonce: %v", err)
+	}
 	msg := NewMsgPong(nonce)
 	if msg.Nonce != nonce {
 		t.Errorf("NewMsgPong: wrong nonce - got %v, want %v",

app/appmessage/p2p_msgpruningpointhash.go

@@ -0,0 +1,23 @@
+package appmessage
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// MsgPruningPointHashMessage represents a kaspa PruningPointHash message
+type MsgPruningPointHashMessage struct {
+	baseMessage
+	Hash *externalapi.DomainHash
+}
+
+// Command returns the protocol command string for the message
+func (msg *MsgPruningPointHashMessage) Command() MessageCommand {
+	return CmdPruningPointHash
+}
+
+// NewPruningPointHashMessage returns a new kaspa PruningPointHash message
+func NewPruningPointHashMessage(hash *externalapi.DomainHash) *MsgPruningPointHashMessage {
+	return &MsgPruningPointHashMessage{
+		Hash: hash,
+	}
+}

app/appmessage/p2p_msgpruningpointproof.go

@@ -1,20 +0,0 @@
-package appmessage
-
-// MsgPruningPointProof represents a kaspa PruningPointProof message
-type MsgPruningPointProof struct {
-	baseMessage
-
-	Headers [][]*MsgBlockHeader
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgPruningPointProof) Command() MessageCommand {
-	return CmdPruningPointProof
-}
-
-// NewMsgPruningPointProof returns a new MsgPruningPointProof.
-func NewMsgPruningPointProof(headers [][]*MsgBlockHeader) *MsgPruningPointProof {
-	return &MsgPruningPointProof{
-		Headers: headers,
-	}
-}

app/appmessage/p2p_msgpruningpoints.go

@@ -1,20 +0,0 @@
-package appmessage
-
-// MsgPruningPoints represents a kaspa PruningPoints message
-type MsgPruningPoints struct {
-	baseMessage
-
-	Headers []*MsgBlockHeader
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgPruningPoints) Command() MessageCommand {
-	return CmdPruningPoints
-}
-
-// NewMsgPruningPoints returns a new MsgPruningPoints.
-func NewMsgPruningPoints(headers []*MsgBlockHeader) *MsgPruningPoints {
-	return &MsgPruningPoints{
-		Headers: headers,
-	}
-}

app/appmessage/p2p_msgpruningpointutxosetchunk.go

@@ -31,6 +31,6 @@ type OutpointAndUTXOEntryPair struct {
 type UTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *externalapi.ScriptPublicKey
-	BlockDAAScore   uint64
+	BlockBlueScore  uint64
 	IsCoinbase      bool
 }

app/appmessage/p2p_msgrequestblocklocator.go

@@ -10,6 +10,7 @@ import (
 // The locator is returned via a locator message (MsgBlockLocator).
 type MsgRequestBlockLocator struct {
 	baseMessage
+	LowHash  *externalapi.DomainHash
 	HighHash *externalapi.DomainHash
 	Limit    uint32
 }
@@ -23,8 +24,9 @@ func (msg *MsgRequestBlockLocator) Command() MessageCommand {
 // NewMsgRequestBlockLocator returns a new RequestBlockLocator message that conforms to the
 // Message interface using the passed parameters and defaults for the remaining
 // fields.
-func NewMsgRequestBlockLocator(highHash *externalapi.DomainHash, limit uint32) *MsgRequestBlockLocator {
+func NewMsgRequestBlockLocator(lowHash, highHash *externalapi.DomainHash, limit uint32) *MsgRequestBlockLocator {
 	return &MsgRequestBlockLocator{
+		LowHash:  lowHash,
 		HighHash: highHash,
 		Limit:    limit,
 	}

app/appmessage/p2p_msgrequestblocklocator_test.go

@@ -16,7 +16,7 @@ func TestRequestBlockLocator(t *testing.T) {
 
 	// Ensure the command is expected value.
 	wantCmd := MessageCommand(9)
-	msg := NewMsgRequestBlockLocator(highHash, 0)
+	msg := NewMsgRequestBlockLocator(highHash, &externalapi.DomainHash{}, 0)
 	if cmd := msg.Command(); cmd != wantCmd {
 		t.Errorf("NewMsgRequestBlockLocator: wrong command - got %v want %v",
 			cmd, wantCmd)

app/appmessage/p2p_msgrequestheaders_test.go

@@ -10,7 +10,7 @@ import (
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 )
 
-// TestRequstIBDBlocks tests the MsgRequestIBDBlocks API.
+// TestRequstIBDBlocks tests the MsgRequestHeaders API.
 func TestRequstIBDBlocks(t *testing.T) {
 	hashStr := "000000000002e7ad7b9eef9479e4aabc65cb831269cc20d2632c13684406dee0"
 	lowHash, err := externalapi.NewDomainHashFromString(hashStr)
@@ -27,14 +27,14 @@ func TestRequstIBDBlocks(t *testing.T) {
 	// Ensure we get the same data back out.
 	msg := NewMsgRequstHeaders(lowHash, highHash)
 	if !msg.HighHash.Equal(highHash) {
-		t.Errorf("NewMsgRequstIBDBlocks: wrong high hash - got %v, want %v",
+		t.Errorf("NewMsgRequstHeaders: wrong high hash - got %v, want %v",
 			msg.HighHash, highHash)
 	}
 
 	// Ensure the command is expected value.
 	wantCmd := MessageCommand(4)
 	if cmd := msg.Command(); cmd != wantCmd {
-		t.Errorf("NewMsgRequstIBDBlocks: wrong command - got %v want %v",
+		t.Errorf("NewMsgRequstHeaders: wrong command - got %v want %v",
 			cmd, wantCmd)
 	}
 }

app/appmessage/p2p_msgrequestpruningpointproof.go

@@ -1,16 +0,0 @@
-package appmessage
-
-// MsgRequestPruningPointProof represents a kaspa RequestPruningPointProof message
-type MsgRequestPruningPointProof struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgRequestPruningPointProof) Command() MessageCommand {
-	return CmdRequestPruningPointProof
-}
-
-// NewMsgRequestPruningPointProof returns a new MsgRequestPruningPointProof.
-func NewMsgRequestPruningPointProof() *MsgRequestPruningPointProof {
-	return &MsgRequestPruningPointProof{}
-}

app/appmessage/p2p_msgrequestpruningpointutxosetandblock.go

@@ -4,20 +4,20 @@ import (
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 )
 
-// MsgRequestPruningPointUTXOSet represents a kaspa RequestPruningPointUTXOSet message
+// MsgRequestPruningPointUTXOSetAndBlock represents a kaspa RequestPruningPointUTXOSetAndBlock message
-type MsgRequestPruningPointUTXOSet struct {
+type MsgRequestPruningPointUTXOSetAndBlock struct {
 	baseMessage
 	PruningPointHash *externalapi.DomainHash
 }
 
 // Command returns the protocol command string for the message
-func (msg *MsgRequestPruningPointUTXOSet) Command() MessageCommand {
+func (msg *MsgRequestPruningPointUTXOSetAndBlock) Command() MessageCommand {
-	return CmdRequestPruningPointUTXOSet
+	return CmdRequestPruningPointUTXOSetAndBlock
 }
 
-// NewMsgRequestPruningPointUTXOSet returns a new MsgRequestPruningPointUTXOSet
+// NewMsgRequestPruningPointUTXOSetAndBlock returns a new MsgRequestPruningPointUTXOSetAndBlock
-func NewMsgRequestPruningPointUTXOSet(pruningPointHash *externalapi.DomainHash) *MsgRequestPruningPointUTXOSet {
+func NewMsgRequestPruningPointUTXOSetAndBlock(pruningPointHash *externalapi.DomainHash) *MsgRequestPruningPointUTXOSetAndBlock {
-	return &MsgRequestPruningPointUTXOSet{
+	return &MsgRequestPruningPointUTXOSetAndBlock{
 		PruningPointHash: pruningPointHash,
 	}
 }

app/appmessage/p2p_msgtrusteddata.go

@@ -1,25 +0,0 @@
-package appmessage
-
-// MsgTrustedData represents a kaspa TrustedData message
-type MsgTrustedData struct {
-	baseMessage
-
-	DAAWindow    []*TrustedDataDAAHeader
-	GHOSTDAGData []*BlockGHOSTDAGDataHashPair
-}
-
-// Command returns the protocol command string for the message
-func (msg *MsgTrustedData) Command() MessageCommand {
-	return CmdTrustedData
-}
-
-// NewMsgTrustedData returns a new MsgTrustedData.
-func NewMsgTrustedData() *MsgTrustedData {
-	return &MsgTrustedData{}
-}
-
-// TrustedDataDAAHeader is an appmessage representation of externalapi.TrustedDataDataDAAHeader
-type TrustedDataDAAHeader struct {
-	Header       *MsgBlockHeader
-	GHOSTDAGData *BlockGHOSTDAGData
-}

app/appmessage/p2p_msgtx.go

@@ -6,6 +6,7 @@ package appmessage
 
 import (
 	"encoding/binary"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"strconv"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
@@ -90,18 +91,16 @@ type TxIn struct {
 	PreviousOutpoint Outpoint
 	SignatureScript  []byte
 	Sequence         uint64
-	SigOpCount       byte
 }
 
 // NewTxIn returns a new kaspa transaction input with the provided
 // previous outpoint point and signature script with a default sequence of
 // MaxTxInSequenceNum.
-func NewTxIn(prevOut *Outpoint, signatureScript []byte, sequence uint64, sigOpCount byte) *TxIn {
+func NewTxIn(prevOut *Outpoint, signatureScript []byte, sequence uint64) *TxIn {
 	return &TxIn{
 		PreviousOutpoint: *prevOut,
 		SignatureScript:  signatureScript,
 		Sequence:         sequence,
-		SigOpCount:       sigOpCount,
 	}
 }
 
@@ -134,6 +133,7 @@ type MsgTx struct {
 	LockTime     uint64
 	SubnetworkID externalapi.DomainSubnetworkID
 	Gas          uint64
+	PayloadHash  externalapi.DomainHash
 	Payload      []byte
 }
 
@@ -179,6 +179,7 @@ func (msg *MsgTx) Copy() *MsgTx {
 		LockTime:     msg.LockTime,
 		SubnetworkID: msg.SubnetworkID,
 		Gas:          msg.Gas,
+		PayloadHash:  msg.PayloadHash,
 	}
 
 	if msg.Payload != nil {
@@ -208,7 +209,6 @@ func (msg *MsgTx) Copy() *MsgTx {
 			PreviousOutpoint: newOutpoint,
 			SignatureScript:  newScript,
 			Sequence:         oldTxIn.Sequence,
-			SigOpCount:       oldTxIn.SigOpCount,
 		}
 
 		// Finally, append this fully copied txin.
@@ -280,12 +280,18 @@ func newMsgTx(version uint16, txIn []*TxIn, txOut []*TxOut, subnetworkID *extern
 		txOut = make([]*TxOut, 0, defaultTxInOutAlloc)
 	}
 
+	var payloadHash externalapi.DomainHash
+	if *subnetworkID != subnetworks.SubnetworkIDNative {
+		payloadHash = *hashes.PayloadHash(payload)
+	}
+
 	return &MsgTx{
 		Version:      version,
 		TxIn:         txIn,
 		TxOut:        txOut,
 		SubnetworkID: *subnetworkID,
 		Gas:          gas,
+		PayloadHash:  payloadHash,
 		Payload:      payload,
 		LockTime:     lockTime,
 	}

app/appmessage/p2p_msgtx_test.go

@@ -22,7 +22,7 @@ import (
 
 // TestTx tests the MsgTx API.
 func TestTx(t *testing.T) {
-	pver := uint32(4)
+	pver := ProtocolVersion
 
 	txIDStr := "000000000003ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506"
 	txID, err := transactionid.FromString(txIDStr)
@@ -68,7 +68,7 @@ func TestTx(t *testing.T) {
 
 	// Ensure we get the same transaction input back out.
 	sigScript := []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62}
-	txIn := NewTxIn(prevOut, sigScript, constants.MaxTxInSequenceNum, 1)
+	txIn := NewTxIn(prevOut, sigScript, constants.MaxTxInSequenceNum)
 	if !reflect.DeepEqual(&txIn.PreviousOutpoint, prevOut) {
 		t.Errorf("NewTxIn: wrong prev outpoint - got %v, want %v",
 			spew.Sprint(&txIn.PreviousOutpoint),
@@ -133,8 +133,8 @@ func TestTx(t *testing.T) {
 
 // TestTxHash tests the ability to generate the hash of a transaction accurately.
 func TestTxHashAndID(t *testing.T) {
-	txHash1Str := "93663e597f6c968d32d229002f76408edf30d6a0151ff679fc729812d8cb2acc"
+	txHash1Str := "4bee9ee495bd93a755de428376bd582a2bb6ec37c041753b711c0606d5745c13"
-	txID1Str := "24079c6d2bdf602fc389cc307349054937744a9c8dc0f07c023e6af0e949a4e7"
+	txID1Str := "f868bd20e816256b80eac976821be4589d24d21141bd1cec6e8005d0c16c6881"
 	wantTxID1, err := transactionid.FromString(txID1Str)
 	if err != nil {
 		t.Fatalf("NewTxIDFromStr: %v", err)
@@ -185,14 +185,14 @@ func TestTxHashAndID(t *testing.T) {
 			spew.Sprint(tx1ID), spew.Sprint(wantTxID1))
 	}
 
-	hash2Str := "8dafd1bec24527d8e3b443ceb0a3b92fffc0d60026317f890b2faf5e9afc177a"
+	hash2Str := "cb1bdb4a83d4885535fb3cceb5c96597b7df903db83f0ffcd779d703affd8efd"
 	wantHash2, err := externalapi.NewDomainHashFromString(hash2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)
 		return
 	}
 
-	id2Str := "89ffb49474637502d9059af38b8a95fc2f0d3baef5c801d7a9b9c8830671b711"
+	id2Str := "ca080073d4ddf5b84443a0964af633f3c70a5b290fd3bc35a7e6f93fd33f9330"
 	wantID2, err := transactionid.FromString(id2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)

app/appmessage/p2p_msgversion.go

@@ -82,12 +82,12 @@ func (msg *MsgVersion) Command() MessageCommand {
 // Message interface using the passed parameters and defaults for the remaining
 // fields.
 func NewMsgVersion(addr *NetAddress, id *id.ID, network string,
-	subnetworkID *externalapi.DomainSubnetworkID, protocolVersion uint32) *MsgVersion {
+	subnetworkID *externalapi.DomainSubnetworkID) *MsgVersion {
 
 	// Limit the timestamp to one millisecond precision since the protocol
 	// doesn't support better.
 	return &MsgVersion{
-		ProtocolVersion: protocolVersion,
+		ProtocolVersion: ProtocolVersion,
 		Network:         network,
 		Services:        0,
 		Timestamp:       mstime.Now(),

app/appmessage/p2p_msgversion_test.go

@@ -15,18 +15,18 @@ import (
 
 // TestVersion tests the MsgVersion API.
 func TestVersion(t *testing.T) {
-	pver := uint32(4)
+	pver := ProtocolVersion
 
 	// Create version message data.
 	tcpAddrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 16111}
-	me := NewNetAddress(tcpAddrMe)
+	me := NewNetAddress(tcpAddrMe, SFNodeNetwork)
 	generatedID, err := id.GenerateID()
 	if err != nil {
 		t.Fatalf("id.GenerateID: %s", err)
 	}
 
 	// Ensure we get the correct data back out.
-	msg := NewMsgVersion(me, generatedID, "mainnet", nil, 4)
+	msg := NewMsgVersion(me, generatedID, "mainnet", nil)
 	if msg.ProtocolVersion != pver {
 		t.Errorf("NewMsgVersion: wrong protocol version - got %v, want %v",
 			msg.ProtocolVersion, pver)

app/appmessage/p2p_netaddress.go

@@ -5,9 +5,8 @@
 package appmessage
 
 import (
-	"net"
-
 	"github.com/kaspanet/kaspad/util/mstime"
+	"net"
 )
 
 // NetAddress defines information about a peer on the network including the time
@@ -16,6 +15,9 @@ type NetAddress struct {
 	// Last time the address was seen.
 	Timestamp mstime.Time
 
+	// Bitfield which identifies the services supported by the address.
+	Services ServiceFlag
+
 	// IP address of the peer.
 	IP net.IP
 
@@ -24,6 +26,17 @@ type NetAddress struct {
 	Port uint16
 }
 
+// HasService returns whether the specified service is supported by the address.
+func (na *NetAddress) HasService(service ServiceFlag) bool {
+	return na.Services&service == service
+}
+
+// AddService adds service as a supported service by the peer generating the
+// message.
+func (na *NetAddress) AddService(service ServiceFlag) {
+	na.Services |= service
+}
+
 // TCPAddress converts the NetAddress to *net.TCPAddr
 func (na *NetAddress) TCPAddress() *net.TCPAddr {
 	return &net.TCPAddr{
@@ -34,19 +47,20 @@ func (na *NetAddress) TCPAddress() *net.TCPAddr {
 
 // NewNetAddressIPPort returns a new NetAddress using the provided IP, port, and
 // supported services with defaults for the remaining fields.
-func NewNetAddressIPPort(ip net.IP, port uint16) *NetAddress {
+func NewNetAddressIPPort(ip net.IP, port uint16, services ServiceFlag) *NetAddress {
-	return NewNetAddressTimestamp(mstime.Now(), ip, port)
+	return NewNetAddressTimestamp(mstime.Now(), services, ip, port)
 }
 
 // NewNetAddressTimestamp returns a new NetAddress using the provided
 // timestamp, IP, port, and supported services. The timestamp is rounded to
 // single millisecond precision.
 func NewNetAddressTimestamp(
-	timestamp mstime.Time, ip net.IP, port uint16) *NetAddress {
+	timestamp mstime.Time, services ServiceFlag, ip net.IP, port uint16) *NetAddress {
 	// Limit the timestamp to one millisecond precision since the protocol
 	// doesn't support better.
 	na := NetAddress{
 		Timestamp: timestamp,
+		Services:  services,
 		IP:        ip,
 		Port:      port,
 	}
@@ -55,10 +69,6 @@ func NewNetAddressTimestamp(
 
 // NewNetAddress returns a new NetAddress using the provided TCP address and
 // supported services with defaults for the remaining fields.
-func NewNetAddress(addr *net.TCPAddr) *NetAddress {
+func NewNetAddress(addr *net.TCPAddr, services ServiceFlag) *NetAddress {
-	return NewNetAddressIPPort(addr.IP, uint16(addr.Port))
+	return NewNetAddressIPPort(addr.IP, uint16(addr.Port), services)
-}
-
-func (na NetAddress) String() string {
-	return na.TCPAddress().String()
 }

app/appmessage/p2p_netaddress_test.go

@@ -15,7 +15,7 @@ func TestNetAddress(t *testing.T) {
 	port := 16111
 
 	// Test NewNetAddress.
-	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port})
+	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port}, 0)
 
 	// Ensure we get the same ip, port, and services back out.
 	if !na.IP.Equal(ip) {
@@ -25,4 +25,21 @@ func TestNetAddress(t *testing.T) {
 		t.Errorf("NetNetAddress: wrong port - got %v, want %v", na.Port,
 			port)
 	}
+	if na.Services != 0 {
+		t.Errorf("NetNetAddress: wrong services - got %v, want %v",
+			na.Services, 0)
+	}
+	if na.HasService(SFNodeNetwork) {
+		t.Errorf("HasService: SFNodeNetwork service is set")
+	}
+
+	// Ensure adding the full service node flag works.
+	na.AddService(SFNodeNetwork)
+	if na.Services != SFNodeNetwork {
+		t.Errorf("AddService: wrong services - got %v, want %v",
+			na.Services, SFNodeNetwork)
+	}
+	if !na.HasService(SFNodeNetwork) {
+		t.Errorf("HasService: SFNodeNetwork service not set")
+	}
 }

app/appmessage/p2p_ready.go

@@ -1,22 +0,0 @@
-package appmessage
-
-// MsgReady implements the Message interface and represents a kaspa
-// Ready message. It is used to notify that the peer is ready to receive
-// messages.
-//
-// This message has no payload.
-type MsgReady struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message. This is part
-// of the Message interface implementation.
-func (msg *MsgReady) Command() MessageCommand {
-	return CmdReady
-}
-
-// NewMsgReady returns a new kaspa Ready message that conforms to the
-// Message interface.
-func NewMsgReady() *MsgReady {
-	return &MsgReady{}
-}

app/appmessage/p2p_requestpruningpointhash.go

@@ -0,0 +1,16 @@
+package appmessage
+
+// MsgRequestPruningPointHashMessage represents a kaspa RequestPruningPointHashMessage message
+type MsgRequestPruningPointHashMessage struct {
+	baseMessage
+}
+
+// Command returns the protocol command string for the message
+func (msg *MsgRequestPruningPointHashMessage) Command() MessageCommand {
+	return CmdRequestPruningPointHash
+}
+
+// NewMsgRequestPruningPointHashMessage returns a new kaspa RequestPruningPointHash message
+func NewMsgRequestPruningPointHashMessage() *MsgRequestPruningPointHashMessage {
+	return &MsgRequestPruningPointHashMessage{}
+}

app/appmessage/protocol.go

@@ -11,6 +11,9 @@ import (
 )
 
 const (
+	// ProtocolVersion is the latest protocol version this package supports.
+	ProtocolVersion uint32 = 1
+
 	// DefaultServices describes the default services that are supported by
 	// the server.
 	DefaultServices = SFNodeNetwork | SFNodeBloom | SFNodeCF

app/appmessage/rpc_estimate_network_hashes_per_second.go

@@ -1,43 +0,0 @@
-package appmessage
-
-// EstimateNetworkHashesPerSecondRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type EstimateNetworkHashesPerSecondRequestMessage struct {
-	baseMessage
-	StartHash  string
-	WindowSize uint32
-}
-
-// Command returns the protocol command string for the message
-func (msg *EstimateNetworkHashesPerSecondRequestMessage) Command() MessageCommand {
-	return CmdEstimateNetworkHashesPerSecondRequestMessage
-}
-
-// NewEstimateNetworkHashesPerSecondRequestMessage returns a instance of the message
-func NewEstimateNetworkHashesPerSecondRequestMessage(startHash string, windowSize uint32) *EstimateNetworkHashesPerSecondRequestMessage {
-	return &EstimateNetworkHashesPerSecondRequestMessage{
-		StartHash:  startHash,
-		WindowSize: windowSize,
-	}
-}
-
-// EstimateNetworkHashesPerSecondResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type EstimateNetworkHashesPerSecondResponseMessage struct {
-	baseMessage
-	NetworkHashesPerSecond uint64
-
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *EstimateNetworkHashesPerSecondResponseMessage) Command() MessageCommand {
-	return CmdEstimateNetworkHashesPerSecondResponseMessage
-}
-
-// NewEstimateNetworkHashesPerSecondResponseMessage returns a instance of the message
-func NewEstimateNetworkHashesPerSecondResponseMessage(networkHashesPerSecond uint64) *EstimateNetworkHashesPerSecondResponseMessage {
-	return &EstimateNetworkHashesPerSecondResponseMessage{
-		NetworkHashesPerSecond: networkHashesPerSecond,
-	}
-}

app/appmessage/rpc_get_balance_by_address.go

@@ -1,41 +0,0 @@
-package appmessage
-
-// GetBalanceByAddressRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type GetBalanceByAddressRequestMessage struct {
-	baseMessage
-	Address string
-}
-
-// Command returns the protocol command string for the message
-func (msg *GetBalanceByAddressRequestMessage) Command() MessageCommand {
-	return CmdGetBalanceByAddressRequestMessage
-}
-
-// NewGetBalanceByAddressRequest returns a instance of the message
-func NewGetBalanceByAddressRequest(address string) *GetBalanceByAddressRequestMessage {
-	return &GetBalanceByAddressRequestMessage{
-		Address: address,
-	}
-}
-
-// GetBalanceByAddressResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type GetBalanceByAddressResponseMessage struct {
-	baseMessage
-	Balance uint64
-
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *GetBalanceByAddressResponseMessage) Command() MessageCommand {
-	return CmdGetBalanceByAddressResponseMessage
-}
-
-// NewGetBalanceByAddressResponse returns an instance of the message
-func NewGetBalanceByAddressResponse(Balance uint64) *GetBalanceByAddressResponseMessage {
-	return &GetBalanceByAddressResponseMessage{
-		Balance: Balance,
-	}
-}

app/appmessage/rpc_get_balances_by_addresses.go

@@ -1,47 +0,0 @@
-package appmessage
-
-// GetBalancesByAddressesRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type GetBalancesByAddressesRequestMessage struct {
-	baseMessage
-	Addresses []string
-}
-
-// Command returns the protocol command string for the message
-func (msg *GetBalancesByAddressesRequestMessage) Command() MessageCommand {
-	return CmdGetBalancesByAddressesRequestMessage
-}
-
-// NewGetBalancesByAddressesRequest returns a instance of the message
-func NewGetBalancesByAddressesRequest(addresses []string) *GetBalancesByAddressesRequestMessage {
-	return &GetBalancesByAddressesRequestMessage{
-		Addresses: addresses,
-	}
-}
-
-// BalancesByAddressesEntry represents the balance of some address
-type BalancesByAddressesEntry struct {
-	Address string
-	Balance uint64
-}
-
-// GetBalancesByAddressesResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type GetBalancesByAddressesResponseMessage struct {
-	baseMessage
-	Entries []*BalancesByAddressesEntry
-
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *GetBalancesByAddressesResponseMessage) Command() MessageCommand {
-	return CmdGetBalancesByAddressesResponseMessage
-}
-
-// NewGetBalancesByAddressesResponse returns an instance of the message
-func NewGetBalancesByAddressesResponse(entries []*BalancesByAddressesEntry) *GetBalancesByAddressesResponseMessage {
-	return &GetBalancesByAddressesResponseMessage{
-		Entries: entries,
-	}
-}

app/appmessage/rpc_get_block.go

@@ -4,8 +4,8 @@ package appmessage
 // its respective RPC message
 type GetBlockRequestMessage struct {
 	baseMessage
-	Hash                string
+	Hash                          string
-	IncludeTransactions bool
+	IncludeTransactionVerboseData bool
 }
 
 // Command returns the protocol command string for the message
@@ -14,10 +14,10 @@ func (msg *GetBlockRequestMessage) Command() MessageCommand {
 }
 
 // NewGetBlockRequestMessage returns a instance of the message
-func NewGetBlockRequestMessage(hash string, includeTransactions bool) *GetBlockRequestMessage {
+func NewGetBlockRequestMessage(hash string, includeTransactionVerboseData bool) *GetBlockRequestMessage {
 	return &GetBlockRequestMessage{
-		Hash:                hash,
+		Hash:                          hash,
-		IncludeTransactions: includeTransactions,
+		IncludeTransactionVerboseData: includeTransactionVerboseData,
 	}
 }
 
@@ -25,7 +25,7 @@ func NewGetBlockRequestMessage(hash string, includeTransactions bool) *GetBlockR
 // its respective RPC message
 type GetBlockResponseMessage struct {
 	baseMessage
-	Block *RPCBlock
+	BlockVerboseData *BlockVerboseData
 
 	Error *RPCError
 }
@@ -39,3 +39,69 @@ func (msg *GetBlockResponseMessage) Command() MessageCommand {
 func NewGetBlockResponseMessage() *GetBlockResponseMessage {
 	return &GetBlockResponseMessage{}
 }
+
+// BlockVerboseData holds verbose data about a block
+type BlockVerboseData struct {
+	Hash                   string
+	Version                uint16
+	VersionHex             string
+	HashMerkleRoot         string
+	AcceptedIDMerkleRoot   string
+	UTXOCommitment         string
+	TxIDs                  []string
+	TransactionVerboseData []*TransactionVerboseData
+	Time                   int64
+	Nonce                  uint64
+	Bits                   string
+	Difficulty             float64
+	ParentHashes           []string
+	SelectedParentHash     string
+	BlueScore              uint64
+	IsHeaderOnly           bool
+}
+
+// TransactionVerboseData holds verbose data about a transaction
+type TransactionVerboseData struct {
+	TxID                      string
+	Hash                      string
+	Size                      uint64
+	Version                   uint16
+	LockTime                  uint64
+	SubnetworkID              string
+	Gas                       uint64
+	PayloadHash               string
+	Payload                   string
+	TransactionVerboseInputs  []*TransactionVerboseInput
+	TransactionVerboseOutputs []*TransactionVerboseOutput
+	BlockHash                 string
+	Time                      uint64
+	BlockTime                 uint64
+}
+
+// TransactionVerboseInput holds data about a transaction input
+type TransactionVerboseInput struct {
+	TxID        string
+	OutputIndex uint32
+	ScriptSig   *ScriptSig
+	Sequence    uint64
+}
+
+// ScriptSig holds data about a script signature
+type ScriptSig struct {
+	Asm string
+	Hex string
+}
+
+// TransactionVerboseOutput holds data about a transaction output
+type TransactionVerboseOutput struct {
+	Value        uint64
+	Index        uint32
+	ScriptPubKey *ScriptPubKeyResult
+}
+
+// ScriptPubKeyResult holds data about a script public key
+type ScriptPubKeyResult struct {
+	Hex     string
+	Type    string
+	Address string
+}

app/appmessage/rpc_get_block_dag_info.go

@@ -27,8 +27,6 @@ type GetBlockDAGInfoResponseMessage struct {
 	VirtualParentHashes []string
 	Difficulty          float64
 	PastMedianTime      int64
-	PruningPointHash    string
-	VirtualDAAScore     uint64
 
 	Error *RPCError
 }

app/appmessage/rpc_get_block_template.go

@@ -23,7 +23,7 @@ func NewGetBlockTemplateRequestMessage(payAddress string) *GetBlockTemplateReque
 // its respective RPC message
 type GetBlockTemplateResponseMessage struct {
 	baseMessage
-	Block    *RPCBlock
+	MsgBlock *MsgBlock
 	IsSynced bool
 
 	Error *RPCError
@@ -35,9 +35,9 @@ func (msg *GetBlockTemplateResponseMessage) Command() MessageCommand {
 }
 
 // NewGetBlockTemplateResponseMessage returns a instance of the message
-func NewGetBlockTemplateResponseMessage(block *RPCBlock, isSynced bool) *GetBlockTemplateResponseMessage {
+func NewGetBlockTemplateResponseMessage(msgBlock *MsgBlock, isSynced bool) *GetBlockTemplateResponseMessage {
 	return &GetBlockTemplateResponseMessage{
-		Block:    block,
+		MsgBlock: msgBlock,
 		IsSynced: isSynced,
 	}
 }

app/appmessage/rpc_get_blocks.go

@@ -4,9 +4,9 @@ package appmessage
 // its respective RPC message
 type GetBlocksRequestMessage struct {
 	baseMessage
-	LowHash             string
+	LowHash                       string
-	IncludeBlocks       bool
+	IncludeBlockVerboseData       bool
-	IncludeTransactions bool
+	IncludeTransactionVerboseData bool
 }
 
 // Command returns the protocol command string for the message
@@ -15,12 +15,12 @@ func (msg *GetBlocksRequestMessage) Command() MessageCommand {
 }
 
 // NewGetBlocksRequestMessage returns a instance of the message
-func NewGetBlocksRequestMessage(lowHash string, includeBlocks bool,
+func NewGetBlocksRequestMessage(lowHash string, includeBlockVerboseData bool,
-	includeTransactions bool) *GetBlocksRequestMessage {
+	includeTransactionVerboseData bool) *GetBlocksRequestMessage {
 	return &GetBlocksRequestMessage{
-		LowHash:             lowHash,
+		LowHash:                       lowHash,
-		IncludeBlocks:       includeBlocks,
+		IncludeBlockVerboseData:       includeBlockVerboseData,
-		IncludeTransactions: includeTransactions,
+		IncludeTransactionVerboseData: includeTransactionVerboseData,
 	}
 }
 
@@ -28,8 +28,8 @@ func NewGetBlocksRequestMessage(lowHash string, includeBlocks bool,
 // its respective RPC message
 type GetBlocksResponseMessage struct {
 	baseMessage
-	BlockHashes []string
+	BlockHashes      []string
-	Blocks      []*RPCBlock
+	BlockVerboseData []*BlockVerboseData
 
 	Error *RPCError
 }
@@ -40,6 +40,11 @@ func (msg *GetBlocksResponseMessage) Command() MessageCommand {
 }
 
 // NewGetBlocksResponseMessage returns a instance of the message
-func NewGetBlocksResponseMessage() *GetBlocksResponseMessage {
+func NewGetBlocksResponseMessage(blockHashes []string, blockHexes []string,
-	return &GetBlocksResponseMessage{}
+	blockVerboseData []*BlockVerboseData) *GetBlocksResponseMessage {
+
+	return &GetBlocksResponseMessage{
+		BlockHashes:      blockHashes,
+		BlockVerboseData: blockVerboseData,
+	}
 }

app/appmessage/rpc_get_info.go

@@ -11,8 +11,8 @@ func (msg *GetInfoRequestMessage) Command() MessageCommand {
 	return CmdGetInfoRequestMessage
 }
 
-// NewGetInfoRequestMessage returns a instance of the message
+// NewGeInfoRequestMessage returns a instance of the message
-func NewGetInfoRequestMessage() *GetInfoRequestMessage {
+func NewGeInfoRequestMessage() *GetInfoRequestMessage {
 	return &GetInfoRequestMessage{}
 }
 
@@ -20,9 +20,7 @@ func NewGetInfoRequestMessage() *GetInfoRequestMessage {
 // its respective RPC message
 type GetInfoResponseMessage struct {
 	baseMessage
-	P2PID         string
+	P2PID string
-	MempoolSize   uint64
-	ServerVersion string
 
 	Error *RPCError
 }
@@ -33,10 +31,8 @@ func (msg *GetInfoResponseMessage) Command() MessageCommand {
 }
 
 // NewGetInfoResponseMessage returns a instance of the message
-func NewGetInfoResponseMessage(p2pID string, mempoolSize uint64, serverVersion string) *GetInfoResponseMessage {
+func NewGetInfoResponseMessage(p2pID string) *GetInfoResponseMessage {
 	return &GetInfoResponseMessage{
-		P2PID:         p2pID,
+		P2PID: p2pID,
-		MempoolSize:   mempoolSize,
-		ServerVersion: serverVersion,
 	}
 }

app/appmessage/rpc_get_mempool_entry.go

@@ -28,8 +28,8 @@ type GetMempoolEntryResponseMessage struct {
 
 // MempoolEntry represents a transaction in the mempool.
 type MempoolEntry struct {
-	Fee         uint64
+	Fee                    uint64
-	Transaction *RPCTransaction
+	TransactionVerboseData *TransactionVerboseData
 }
 
 // Command returns the protocol command string for the message
@@ -38,11 +38,11 @@ func (msg *GetMempoolEntryResponseMessage) Command() MessageCommand {
 }
 
 // NewGetMempoolEntryResponseMessage returns a instance of the message
-func NewGetMempoolEntryResponseMessage(fee uint64, transaction *RPCTransaction) *GetMempoolEntryResponseMessage {
+func NewGetMempoolEntryResponseMessage(fee uint64, transactionVerboseData *TransactionVerboseData) *GetMempoolEntryResponseMessage {
 	return &GetMempoolEntryResponseMessage{
 		Entry: &MempoolEntry{
-			Fee:         fee,
+			Fee:                    fee,
-			Transaction: transaction,
+			TransactionVerboseData: transactionVerboseData,
 		},
 	}
 }

app/appmessage/rpc_get_virtual_selected_parent_chain_from_block.go

@@ -24,7 +24,7 @@ func NewGetVirtualSelectedParentChainFromBlockRequestMessage(startHash string) *
 type GetVirtualSelectedParentChainFromBlockResponseMessage struct {
 	baseMessage
 	RemovedChainBlockHashes []string
-	AddedChainBlockHashes   []string
+	AddedChainBlocks        []*ChainBlock
 
 	Error *RPCError
 }
@@ -35,11 +35,11 @@ func (msg *GetVirtualSelectedParentChainFromBlockResponseMessage) Command() Mess
 }
 
 // NewGetVirtualSelectedParentChainFromBlockResponseMessage returns a instance of the message
-func NewGetVirtualSelectedParentChainFromBlockResponseMessage(removedChainBlockHashes,
+func NewGetVirtualSelectedParentChainFromBlockResponseMessage(removedChainBlockHashes []string,
-	addedChainBlockHashes []string) *GetVirtualSelectedParentChainFromBlockResponseMessage {
+	addedChainBlocks []*ChainBlock) *GetVirtualSelectedParentChainFromBlockResponseMessage {
 
 	return &GetVirtualSelectedParentChainFromBlockResponseMessage{
 		RemovedChainBlockHashes: removedChainBlockHashes,
-		AddedChainBlockHashes:   addedChainBlockHashes,
+		AddedChainBlocks:        addedChainBlocks,
 	}
 }

app/appmessage/rpc_notify_block_added.go

@@ -37,7 +37,8 @@ func NewNotifyBlockAddedResponseMessage() *NotifyBlockAddedResponseMessage {
 // its respective RPC message
 type BlockAddedNotificationMessage struct {
 	baseMessage
-	Block *RPCBlock
+	Block            *MsgBlock
+	BlockVerboseData *BlockVerboseData
 }
 
 // Command returns the protocol command string for the message
@@ -46,8 +47,9 @@ func (msg *BlockAddedNotificationMessage) Command() MessageCommand {
 }
 
 // NewBlockAddedNotificationMessage returns a instance of the message
-func NewBlockAddedNotificationMessage(block *RPCBlock) *BlockAddedNotificationMessage {
+func NewBlockAddedNotificationMessage(block *MsgBlock, blockVerboseData *BlockVerboseData) *BlockAddedNotificationMessage {
 	return &BlockAddedNotificationMessage{
-		Block: block,
+		Block:            block,
+		BlockVerboseData: blockVerboseData,
 	}
 }

app/appmessage/rpc_notify_pruning_point_utxo_set_override.go

@@ -1,83 +0,0 @@
-package appmessage
-
-// NotifyPruningPointUTXOSetOverrideRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type NotifyPruningPointUTXOSetOverrideRequestMessage struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message
-func (msg *NotifyPruningPointUTXOSetOverrideRequestMessage) Command() MessageCommand {
-	return CmdNotifyPruningPointUTXOSetOverrideRequestMessage
-}
-
-// NewNotifyPruningPointUTXOSetOverrideRequestMessage returns a instance of the message
-func NewNotifyPruningPointUTXOSetOverrideRequestMessage() *NotifyPruningPointUTXOSetOverrideRequestMessage {
-	return &NotifyPruningPointUTXOSetOverrideRequestMessage{}
-}
-
-// NotifyPruningPointUTXOSetOverrideResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type NotifyPruningPointUTXOSetOverrideResponseMessage struct {
-	baseMessage
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *NotifyPruningPointUTXOSetOverrideResponseMessage) Command() MessageCommand {
-	return CmdNotifyPruningPointUTXOSetOverrideResponseMessage
-}
-
-// NewNotifyPruningPointUTXOSetOverrideResponseMessage returns a instance of the message
-func NewNotifyPruningPointUTXOSetOverrideResponseMessage() *NotifyPruningPointUTXOSetOverrideResponseMessage {
-	return &NotifyPruningPointUTXOSetOverrideResponseMessage{}
-}
-
-// PruningPointUTXOSetOverrideNotificationMessage is an appmessage corresponding to
-// its respective RPC message
-type PruningPointUTXOSetOverrideNotificationMessage struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message
-func (msg *PruningPointUTXOSetOverrideNotificationMessage) Command() MessageCommand {
-	return CmdPruningPointUTXOSetOverrideNotificationMessage
-}
-
-// NewPruningPointUTXOSetOverrideNotificationMessage returns a instance of the message
-func NewPruningPointUTXOSetOverrideNotificationMessage() *PruningPointUTXOSetOverrideNotificationMessage {
-	return &PruningPointUTXOSetOverrideNotificationMessage{}
-}
-
-// StopNotifyingPruningPointUTXOSetOverrideRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type StopNotifyingPruningPointUTXOSetOverrideRequestMessage struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message
-func (msg *StopNotifyingPruningPointUTXOSetOverrideRequestMessage) Command() MessageCommand {
-	return CmdNotifyPruningPointUTXOSetOverrideRequestMessage
-}
-
-// NewStopNotifyingPruningPointUTXOSetOverrideRequestMessage returns a instance of the message
-func NewStopNotifyingPruningPointUTXOSetOverrideRequestMessage() *StopNotifyingPruningPointUTXOSetOverrideRequestMessage {
-	return &StopNotifyingPruningPointUTXOSetOverrideRequestMessage{}
-}
-
-// StopNotifyingPruningPointUTXOSetOverrideResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type StopNotifyingPruningPointUTXOSetOverrideResponseMessage struct {
-	baseMessage
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *StopNotifyingPruningPointUTXOSetOverrideResponseMessage) Command() MessageCommand {
-	return CmdNotifyPruningPointUTXOSetOverrideResponseMessage
-}
-
-// NewStopNotifyingPruningPointUTXOSetOverrideResponseMessage returns a instance of the message
-func NewStopNotifyingPruningPointUTXOSetOverrideResponseMessage() *StopNotifyingPruningPointUTXOSetOverrideResponseMessage {
-	return &StopNotifyingPruningPointUTXOSetOverrideResponseMessage{}
-}

app/appmessage/rpc_notify_virtual_daa_score_changed.go

@@ -1,55 +0,0 @@
-package appmessage
-
-// NotifyVirtualDaaScoreChangedRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type NotifyVirtualDaaScoreChangedRequestMessage struct {
-	baseMessage
-}
-
-// Command returns the protocol command string for the message
-func (msg *NotifyVirtualDaaScoreChangedRequestMessage) Command() MessageCommand {
-	return CmdNotifyVirtualDaaScoreChangedRequestMessage
-}
-
-// NewNotifyVirtualDaaScoreChangedRequestMessage returns a instance of the message
-func NewNotifyVirtualDaaScoreChangedRequestMessage() *NotifyVirtualDaaScoreChangedRequestMessage {
-	return &NotifyVirtualDaaScoreChangedRequestMessage{}
-}
-
-// NotifyVirtualDaaScoreChangedResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type NotifyVirtualDaaScoreChangedResponseMessage struct {
-	baseMessage
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *NotifyVirtualDaaScoreChangedResponseMessage) Command() MessageCommand {
-	return CmdNotifyVirtualDaaScoreChangedResponseMessage
-}
-
-// NewNotifyVirtualDaaScoreChangedResponseMessage returns a instance of the message
-func NewNotifyVirtualDaaScoreChangedResponseMessage() *NotifyVirtualDaaScoreChangedResponseMessage {
-	return &NotifyVirtualDaaScoreChangedResponseMessage{}
-}
-
-// VirtualDaaScoreChangedNotificationMessage is an appmessage corresponding to
-// its respective RPC message
-type VirtualDaaScoreChangedNotificationMessage struct {
-	baseMessage
-	VirtualDaaScore uint64
-}
-
-// Command returns the protocol command string for the message
-func (msg *VirtualDaaScoreChangedNotificationMessage) Command() MessageCommand {
-	return CmdVirtualDaaScoreChangedNotificationMessage
-}
-
-// NewVirtualDaaScoreChangedNotificationMessage returns a instance of the message
-func NewVirtualDaaScoreChangedNotificationMessage(
-	virtualDaaScore uint64) *VirtualDaaScoreChangedNotificationMessage {
-
-	return &VirtualDaaScoreChangedNotificationMessage{
-		VirtualDaaScore: virtualDaaScore,
-	}
-}

app/appmessage/rpc_notify_virtual_selected_parent_chain_changed.go

@@ -38,7 +38,19 @@ func NewNotifyVirtualSelectedParentChainChangedResponseMessage() *NotifyVirtualS
 type VirtualSelectedParentChainChangedNotificationMessage struct {
 	baseMessage
 	RemovedChainBlockHashes []string
-	AddedChainBlockHashes   []string
+	AddedChainBlocks        []*ChainBlock
+}
+
+// ChainBlock represents a DAG chain-block
+type ChainBlock struct {
+	Hash           string
+	AcceptedBlocks []*AcceptedBlock
+}
+
+// AcceptedBlock represents a block accepted into the DAG
+type AcceptedBlock struct {
+	Hash                   string
+	AcceptedTransactionIDs []string
 }
 
 // Command returns the protocol command string for the message
@@ -47,11 +59,11 @@ func (msg *VirtualSelectedParentChainChangedNotificationMessage) Command() Messa
 }
 
 // NewVirtualSelectedParentChainChangedNotificationMessage returns a instance of the message
-func NewVirtualSelectedParentChainChangedNotificationMessage(removedChainBlockHashes,
+func NewVirtualSelectedParentChainChangedNotificationMessage(removedChainBlockHashes []string,
-	addedChainBlocks []string) *VirtualSelectedParentChainChangedNotificationMessage {
+	addedChainBlocks []*ChainBlock) *VirtualSelectedParentChainChangedNotificationMessage {
 
 	return &VirtualSelectedParentChainChangedNotificationMessage{
 		RemovedChainBlockHashes: removedChainBlockHashes,
-		AddedChainBlockHashes:   addedChainBlocks,
+		AddedChainBlocks:        addedChainBlocks,
 	}
 }

app/appmessage/rpc_stop_notifying_utxos_changed.go

@@ -1,37 +0,0 @@
-package appmessage
-
-// StopNotifyingUTXOsChangedRequestMessage is an appmessage corresponding to
-// its respective RPC message
-type StopNotifyingUTXOsChangedRequestMessage struct {
-	baseMessage
-	Addresses []string
-}
-
-// Command returns the protocol command string for the message
-func (msg *StopNotifyingUTXOsChangedRequestMessage) Command() MessageCommand {
-	return CmdStopNotifyingUTXOsChangedRequestMessage
-}
-
-// NewStopNotifyingUTXOsChangedRequestMessage returns a instance of the message
-func NewStopNotifyingUTXOsChangedRequestMessage(addresses []string) *StopNotifyingUTXOsChangedRequestMessage {
-	return &StopNotifyingUTXOsChangedRequestMessage{
-		Addresses: addresses,
-	}
-}
-
-// StopNotifyingUTXOsChangedResponseMessage is an appmessage corresponding to
-// its respective RPC message
-type StopNotifyingUTXOsChangedResponseMessage struct {
-	baseMessage
-	Error *RPCError
-}
-
-// Command returns the protocol command string for the message
-func (msg *StopNotifyingUTXOsChangedResponseMessage) Command() MessageCommand {
-	return CmdStopNotifyingUTXOsChangedResponseMessage
-}
-
-// NewStopNotifyingUTXOsChangedResponseMessage returns a instance of the message
-func NewStopNotifyingUTXOsChangedResponseMessage() *StopNotifyingUTXOsChangedResponseMessage {
-	return &StopNotifyingUTXOsChangedResponseMessage{}
-}

app/appmessage/rpc_submit_block.go

@@ -4,8 +4,7 @@ package appmessage
 // its respective RPC message
 type SubmitBlockRequestMessage struct {
 	baseMessage
-	Block             *RPCBlock
+	Block *MsgBlock
-	AllowNonDAABlocks bool
 }
 
 // Command returns the protocol command string for the message
@@ -14,10 +13,9 @@ func (msg *SubmitBlockRequestMessage) Command() MessageCommand {
 }
 
 // NewSubmitBlockRequestMessage returns a instance of the message
-func NewSubmitBlockRequestMessage(block *RPCBlock, allowNonDAABlocks bool) *SubmitBlockRequestMessage {
+func NewSubmitBlockRequestMessage(block *MsgBlock) *SubmitBlockRequestMessage {
 	return &SubmitBlockRequestMessage{
-		Block:             block,
+		Block: block,
-		AllowNonDAABlocks: allowNonDAABlocks,
 	}
 }
 
@@ -55,51 +53,7 @@ func (msg *SubmitBlockResponseMessage) Command() MessageCommand {
 	return CmdSubmitBlockResponseMessage
 }
 
-// NewSubmitBlockResponseMessage returns an instance of the message
+// NewSubmitBlockResponseMessage returns a instance of the message
 func NewSubmitBlockResponseMessage() *SubmitBlockResponseMessage {
 	return &SubmitBlockResponseMessage{}
 }
-
-// RPCBlock is a kaspad block representation meant to be
-// used over RPC
-type RPCBlock struct {
-	Header       *RPCBlockHeader
-	Transactions []*RPCTransaction
-	VerboseData  *RPCBlockVerboseData
-}
-
-// RPCBlockHeader is a kaspad block header representation meant to be
-// used over RPC
-type RPCBlockHeader struct {
-	Version              uint32
-	Parents              []*RPCBlockLevelParents
-	HashMerkleRoot       string
-	AcceptedIDMerkleRoot string
-	UTXOCommitment       string
-	Timestamp            int64
-	Bits                 uint32
-	Nonce                uint64
-	DAAScore             uint64
-	BlueScore            uint64
-	BlueWork             string
-	PruningPoint         string
-}
-
-// RPCBlockLevelParents holds parent hashes for one block level
-type RPCBlockLevelParents struct {
-	ParentHashes []string
-}
-
-// RPCBlockVerboseData holds verbose data about a block
-type RPCBlockVerboseData struct {
-	Hash                string
-	Difficulty          float64
-	SelectedParentHash  string
-	TransactionIDs      []string
-	IsHeaderOnly        bool
-	BlueScore           uint64
-	ChildrenHashes      []string
-	MergeSetBluesHashes []string
-	MergeSetRedsHashes  []string
-	IsChainBlock        bool
-}

app/appmessage/rpc_submit_transaction.go

@@ -5,7 +5,6 @@ package appmessage
 type SubmitTransactionRequestMessage struct {
 	baseMessage
 	Transaction *RPCTransaction
-	AllowOrphan bool
 }
 
 // Command returns the protocol command string for the message
@@ -14,10 +13,9 @@ func (msg *SubmitTransactionRequestMessage) Command() MessageCommand {
 }
 
 // NewSubmitTransactionRequestMessage returns a instance of the message
-func NewSubmitTransactionRequestMessage(transaction *RPCTransaction, allowOrphan bool) *SubmitTransactionRequestMessage {
+func NewSubmitTransactionRequestMessage(transaction *RPCTransaction) *SubmitTransactionRequestMessage {
 	return &SubmitTransactionRequestMessage{
 		Transaction: transaction,
-		AllowOrphan: allowOrphan,
 	}
 }
 
@@ -51,8 +49,8 @@ type RPCTransaction struct {
 	LockTime     uint64
 	SubnetworkID string
 	Gas          uint64
+	PayloadHash  string
 	Payload      string
-	VerboseData  *RPCTransactionVerboseData
 }
 
 // RPCTransactionInput is a kaspad transaction input representation
@@ -61,8 +59,6 @@ type RPCTransactionInput struct {
 	PreviousOutpoint *RPCOutpoint
 	SignatureScript  string
 	Sequence         uint64
-	SigOpCount       byte
-	VerboseData      *RPCTransactionInputVerboseData
 }
 
 // RPCScriptPublicKey is a kaspad ScriptPublicKey representation
@@ -76,7 +72,6 @@ type RPCScriptPublicKey struct {
 type RPCTransactionOutput struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
-	VerboseData     *RPCTransactionOutputVerboseData
 }
 
 // RPCOutpoint is a kaspad outpoint representation meant to be used
@@ -91,25 +86,6 @@ type RPCOutpoint struct {
 type RPCUTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
-	BlockDAAScore   uint64
+	BlockBlueScore  uint64
 	IsCoinbase      bool
 }
-
-// RPCTransactionVerboseData holds verbose data about a transaction
-type RPCTransactionVerboseData struct {
-	TransactionID string
-	Hash          string
-	Mass          uint64
-	BlockHash     string
-	BlockTime     uint64
-}
-
-// RPCTransactionInputVerboseData holds data about a transaction input
-type RPCTransactionInputVerboseData struct {
-}
-
-// RPCTransactionOutputVerboseData holds data about a transaction output
-type RPCTransactionOutputVerboseData struct {
-	ScriptPublicKeyType    string
-	ScriptPublicKeyAddress string
-}

app/component_manager.go

@@ -4,19 +4,23 @@ import (
 	"fmt"
 	"sync/atomic"
 
-	"github.com/kaspanet/kaspad/domain/miningmanager/mempool"
+	"github.com/kaspanet/kaspad/domain/utxoindex"
 
+	infrastructuredatabase "github.com/kaspanet/kaspad/infrastructure/db/database"
+
+	"github.com/kaspanet/kaspad/domain"
+
+	"github.com/kaspanet/kaspad/infrastructure/network/addressmanager"
+
+	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/id"
+
+	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol"
 	"github.com/kaspanet/kaspad/app/rpc"
-	"github.com/kaspanet/kaspad/domain"
-	"github.com/kaspanet/kaspad/domain/consensus"
-	"github.com/kaspanet/kaspad/domain/utxoindex"
 	"github.com/kaspanet/kaspad/infrastructure/config"
-	infrastructuredatabase "github.com/kaspanet/kaspad/infrastructure/db/database"
-	"github.com/kaspanet/kaspad/infrastructure/network/addressmanager"
 	"github.com/kaspanet/kaspad/infrastructure/network/connmanager"
+	"github.com/kaspanet/kaspad/infrastructure/network/dnsseed"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter"
-	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/id"
 	"github.com/kaspanet/kaspad/util/panics"
 )
 
@@ -46,6 +50,8 @@ func (a *ComponentManager) Start() {
 		panics.Exit(log, fmt.Sprintf("Error starting the net adapter: %+v", err))
 	}
 
+	a.maybeSeedFromDNS()
+
 	a.connectionManager.Start()
 }
 
@@ -66,8 +72,6 @@ func (a *ComponentManager) Stop() {
 		log.Errorf("Error stopping the net adapter: %+v", err)
 	}
 
-	a.protocolManager.Close()
-
 	return
 }
 
@@ -76,16 +80,7 @@ func (a *ComponentManager) Stop() {
 func NewComponentManager(cfg *config.Config, db infrastructuredatabase.Database, interrupt chan<- struct{}) (
 	*ComponentManager, error) {
 
-	consensusConfig := consensus.Config{
+	domain, err := domain.New(cfg.ActiveNetParams, db, cfg.IsArchivalNode)
-		Params:                          *cfg.ActiveNetParams,
-		IsArchival:                      cfg.IsArchivalNode,
-		EnableSanityCheckPruningUTXOSet: cfg.EnableSanityCheckPruningUTXOSet,
-	}
-	mempoolConfig := mempool.DefaultConfig(&consensusConfig.Params)
-	mempoolConfig.MaximumOrphanTransactionCount = cfg.MaxOrphanTxs
-	mempoolConfig.MinimumRelayTransactionFee = cfg.MinRelayTxFee
-
-	domain, err := domain.New(&consensusConfig, mempoolConfig, db)
 	if err != nil {
 		return nil, err
 	}
@@ -95,18 +90,14 @@ func NewComponentManager(cfg *config.Config, db infrastructuredatabase.Database,
 		return nil, err
 	}
 
-	addressManager, err := addressmanager.New(addressmanager.NewConfig(cfg), db)
+	addressManager, err := addressmanager.New(addressmanager.NewConfig(cfg))
 	if err != nil {
 		return nil, err
 	}
 
 	var utxoIndex *utxoindex.UTXOIndex
 	if cfg.UTXOIndex {
-		utxoIndex, err = utxoindex.New(domain, db)
+		utxoIndex = utxoindex.New(domain.Consensus(), db)
-		if err != nil {
-			return nil, err
-		}
-
 		log.Infof("UTXO index started")
 	}
 
@@ -152,13 +143,28 @@ func setupRPC(
 		utxoIndex,
 		shutDownChan,
 	)
-	protocolManager.SetOnVirtualChange(rpcManager.NotifyVirtualChange)
 	protocolManager.SetOnBlockAddedToDAGHandler(rpcManager.NotifyBlockAddedToDAG)
-	protocolManager.SetOnPruningPointUTXOSetOverrideHandler(rpcManager.NotifyPruningPointUTXOSetOverride)
 
 	return rpcManager
 }
 
+func (a *ComponentManager) maybeSeedFromDNS() {
+	if !a.cfg.DisableDNSSeed {
+		dnsseed.SeedFromDNS(a.cfg.NetParams(), a.cfg.DNSSeed, appmessage.SFNodeNetwork, false, nil,
+			a.cfg.Lookup, func(addresses []*appmessage.NetAddress) {
+				// Kaspad uses a lookup of the dns seeder here. Since seeder returns
+				// IPs of nodes and not its own IP, we can not know real IP of
+				// source. So we'll take first returned address as source.
+				a.addressManager.AddAddresses(addresses...)
+			})
+
+		dnsseed.SeedFromGRPC(a.cfg.NetParams(), a.cfg.GRPCSeed, appmessage.SFNodeNetwork, false, nil,
+			func(addresses []*appmessage.NetAddress) {
+				a.addressManager.AddAddresses(addresses...)
+			})
+	}
+}
+
 // P2PNodeID returns the network ID associated with this ComponentManager
 func (a *ComponentManager) P2PNodeID() *id.ID {
 	return a.netAdapter.ID()

app/db_version.go

@@ -1,57 +0,0 @@
-package app
-
-import (
-	"os"
-	"path"
-	"strconv"
-
-	"github.com/pkg/errors"
-)
-
-const currentDatabaseVersion = 1
-
-func checkDatabaseVersion(dbPath string) (err error) {
-	versionFileName := versionFilePath(dbPath)
-
-	versionBytes, err := os.ReadFile(versionFileName)
-	if err != nil {
-		if os.IsNotExist(err) { // If version file doesn't exist, we assume that the database is new
-			return createDatabaseVersionFile(dbPath, versionFileName)
-		}
-		return err
-	}
-
-	databaseVersion, err := strconv.Atoi(string(versionBytes))
-	if err != nil {
-		return err
-	}
-
-	if databaseVersion != currentDatabaseVersion {
-		// TODO: Once there's more then one database version, it might make sense to add upgrade logic at this point
-		return errors.Errorf("Invalid database version %d. Expected version: %d", databaseVersion, currentDatabaseVersion)
-	}
-
-	return nil
-}
-
-func createDatabaseVersionFile(dbPath string, versionFileName string) error {
-	err := os.MkdirAll(dbPath, 0700)
-	if err != nil {
-		return err
-	}
-
-	versionFile, err := os.Create(versionFileName)
-	if err != nil {
-		return nil
-	}
-	defer versionFile.Close()
-
-	versionString := strconv.Itoa(currentDatabaseVersion)
-	_, err = versionFile.Write([]byte(versionString))
-	return err
-}
-
-func versionFilePath(dbPath string) string {
-	dbVersionFileName := path.Join(dbPath, "version")
-	return dbVersionFileName
-}

app/log.go

@@ -7,6 +7,8 @@ package app
 
 import (
 	"github.com/kaspanet/kaspad/infrastructure/logger"
+	"github.com/kaspanet/kaspad/util/panics"
 )
 
-var log = logger.RegisterSubSystem("KASD")
+var log, _ = logger.Get(logger.SubsystemTags.KASD)
+var spawn = panics.GoroutineWrapperFunc(log)

app/protocol/common/common.go

@@ -1,8 +1,6 @@
 package common
 
 import (
-	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
-	routerpkg "github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 	"time"
 
 	"github.com/pkg/errors"
@@ -10,18 +8,7 @@ import (
 
 // DefaultTimeout is the default duration to wait for enqueuing/dequeuing
 // to/from routes.
-const DefaultTimeout = 120 * time.Second
+const DefaultTimeout = 30 * time.Second
 
 // ErrPeerWithSameIDExists signifies that a peer with the same ID already exist.
 var ErrPeerWithSameIDExists = errors.New("ready peer with the same ID already exists")
-
-type flowExecuteFunc func(peer *peerpkg.Peer)
-
-// Flow is a a data structure that is used in order to associate a p2p flow to some route in a router.
-type Flow struct {
-	Name        string
-	ExecuteFunc flowExecuteFunc
-}
-
-// FlowInitializeFunc is a function that is used in order to initialize a flow
-type FlowInitializeFunc func(route *routerpkg.Route, peer *peerpkg.Peer) error

app/protocol/flowcontext/blocks.go

@@ -1,23 +1,22 @@
 package flowcontext
 
 import (
-	"time"
-
 	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
-	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/ruleerrors"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
 	"github.com/pkg/errors"
 
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
+
 	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/app/protocol/flows/blockrelay"
 )
 
 // OnNewBlock updates the mempool after a new block arrival, and
 // relays newly unorphaned transactions and possibly rebroadcast
 // manually added transactions when not in IBD.
 func (f *FlowContext) OnNewBlock(block *externalapi.DomainBlock,
-	virtualChangeSet *externalapi.VirtualChangeSet) error {
+	blockInsertionResult *externalapi.BlockInsertionResult) error {
 
 	hash := consensushashing.BlockHash(block)
 	log.Debugf("OnNewBlock start for block %s", hash)
@@ -31,54 +30,36 @@ func (f *FlowContext) OnNewBlock(block *externalapi.DomainBlock,
 	log.Debugf("OnNewBlock: block %s unorphaned %d blocks", hash, len(unorphaningResults))
 
 	newBlocks := []*externalapi.DomainBlock{block}
-	newVirtualChangeSets := []*externalapi.VirtualChangeSet{virtualChangeSet}
+	newBlockInsertionResults := []*externalapi.BlockInsertionResult{blockInsertionResult}
 	for _, unorphaningResult := range unorphaningResults {
 		newBlocks = append(newBlocks, unorphaningResult.block)
-		newVirtualChangeSets = append(newVirtualChangeSets, unorphaningResult.virtualChangeSet)
+		newBlockInsertionResults = append(newBlockInsertionResults, unorphaningResult.blockInsertionResult)
 	}
 
-	allAcceptedTransactions := make([]*externalapi.DomainTransaction, 0)
 	for i, newBlock := range newBlocks {
 		log.Debugf("OnNewBlock: passing block %s transactions to mining manager", hash)
-		acceptedTransactions, err := f.Domain().MiningManager().HandleNewBlockTransactions(newBlock.Transactions)
+		_, err = f.Domain().MiningManager().HandleNewBlockTransactions(newBlock.Transactions)
 		if err != nil {
 			return err
 		}
-		allAcceptedTransactions = append(allAcceptedTransactions, acceptedTransactions...)
 
 		if f.onBlockAddedToDAGHandler != nil {
 			log.Debugf("OnNewBlock: calling f.onBlockAddedToDAGHandler for block %s", hash)
-			virtualChangeSet = newVirtualChangeSets[i]
+			blockInsertionResult = newBlockInsertionResults[i]
-			err := f.onBlockAddedToDAGHandler(newBlock, virtualChangeSet)
+			err := f.onBlockAddedToDAGHandler(newBlock, blockInsertionResult)
 			if err != nil {
 				return err
 			}
 		}
 	}
 
-	return f.broadcastTransactionsAfterBlockAdded(newBlocks, allAcceptedTransactions)
-}
-
-// OnVirtualChange calls the handler function whenever the virtual block changes.
-func (f *FlowContext) OnVirtualChange(virtualChangeSet *externalapi.VirtualChangeSet) error {
-	if f.onVirtualChangeHandler != nil && virtualChangeSet != nil {
-		return f.onVirtualChangeHandler(virtualChangeSet)
-	}
-
-	return nil
-}
-
-// OnPruningPointUTXOSetOverride calls the handler function whenever the UTXO set
-// resets due to pruning point change via IBD.
-func (f *FlowContext) OnPruningPointUTXOSetOverride() error {
-	if f.onPruningPointUTXOSetOverrideHandler != nil {
-		return f.onPruningPointUTXOSetOverrideHandler()
-	}
 	return nil
 }
 
 func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
-	addedBlocks []*externalapi.DomainBlock, transactionsAcceptedToMempool []*externalapi.DomainTransaction) error {
+	block *externalapi.DomainBlock, transactionsAcceptedToMempool []*externalapi.DomainTransaction) error {
+
+	f.updateTransactionsToRebroadcast(block)
 
 	// Don't relay transactions when in IBD.
 	if f.IsIBDRunning() {
@@ -87,12 +68,7 @@ func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
 
 	var txIDsToRebroadcast []*externalapi.DomainTransactionID
 	if f.shouldRebroadcastTransactions() {
-		txsToRebroadcast, err := f.Domain().MiningManager().RevalidateHighPriorityTransactions()
+		txIDsToRebroadcast = f.txIDsToRebroadcast()
-		if err != nil {
-			return err
-		}
-		txIDsToRebroadcast = consensushashing.TransactionIDs(txsToRebroadcast)
-		f.lastRebroadcastTime = time.Now()
 	}
 
 	txIDsToBroadcast := make([]*externalapi.DomainTransactionID, len(transactionsAcceptedToMempool)+len(txIDsToRebroadcast))
@@ -103,29 +79,33 @@ func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
 	for i, txID := range txIDsToRebroadcast {
 		txIDsToBroadcast[offset+i] = txID
 	}
-	return f.EnqueueTransactionIDsForPropagation(txIDsToBroadcast)
+
+	if len(txIDsToBroadcast) == 0 {
+		return nil
+	}
+	if len(txIDsToBroadcast) > appmessage.MaxInvPerTxInvMsg {
+		txIDsToBroadcast = txIDsToBroadcast[:appmessage.MaxInvPerTxInvMsg]
+	}
+	inv := appmessage.NewMsgInvTransaction(txIDsToBroadcast)
+	return f.Broadcast(inv)
 }
 
 // SharedRequestedBlocks returns a *blockrelay.SharedRequestedBlocks for sharing
 // data about requested blocks between different peers.
-func (f *FlowContext) SharedRequestedBlocks() *SharedRequestedBlocks {
+func (f *FlowContext) SharedRequestedBlocks() *blockrelay.SharedRequestedBlocks {
 	return f.sharedRequestedBlocks
 }
 
 // AddBlock adds the given block to the DAG and propagates it.
 func (f *FlowContext) AddBlock(block *externalapi.DomainBlock) error {
-	if len(block.Transactions) == 0 {
+	blockInsertionResult, err := f.Domain().Consensus().ValidateAndInsertBlock(block)
-		return protocolerrors.Errorf(false, "cannot add header only block")
-	}
-
-	virtualChangeSet, err := f.Domain().Consensus().ValidateAndInsertBlock(block, true)
 	if err != nil {
 		if errors.As(err, &ruleerrors.RuleError{}) {
 			log.Warnf("Validation failed for block %s: %s", consensushashing.BlockHash(block), err)
 		}
 		return err
 	}
-	err = f.OnNewBlock(block, virtualChangeSet)
+	err = f.OnNewBlock(block, blockInsertionResult)
 	if err != nil {
 		return err
 	}
@@ -165,6 +145,7 @@ func (f *FlowContext) UnsetIBDRunning() {
 	}
 
 	f.ibdPeer = nil
+	log.Infof("IBD finished")
 }
 
 // IBDPeer returns the current IBD peer or null if the node is not

app/protocol/flowcontext/errors.go

@@ -18,7 +18,7 @@ import (
 func (*FlowContext) HandleError(err error, flowName string, isStopping *uint32, errChan chan<- error) {
 	isErrRouteClosed := errors.Is(err, router.ErrRouteClosed)
 	if !isErrRouteClosed {
-		if protocolErr := (protocolerrors.ProtocolError{}); !errors.As(err, &protocolErr) {
+		if protocolErr := &(protocolerrors.ProtocolError{}); !errors.As(err, &protocolErr) {
 			panic(err)
 		}
 
@@ -29,8 +29,3 @@ func (*FlowContext) HandleError(err error, flowName string, isStopping *uint32,
 		errChan <- err
 	}
 }
-
-// IsRecoverableError returns whether the error is recoverable
-func (*FlowContext) IsRecoverableError(err error) bool {
-	return err == nil || errors.Is(err, router.ErrRouteClosed) || errors.As(err, &protocolerrors.ProtocolError{})
-}

app/protocol/flowcontext/flow_context.go

@@ -1,15 +1,16 @@
 package flowcontext
 
 import (
+	"github.com/kaspanet/kaspad/util/mstime"
 	"sync"
 	"time"
 
-	"github.com/kaspanet/kaspad/util/mstime"
-
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 
 	"github.com/kaspanet/kaspad/domain"
 
+	"github.com/kaspanet/kaspad/app/protocol/flows/blockrelay"
+	"github.com/kaspanet/kaspad/app/protocol/flows/transactionrelay"
 	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
 	"github.com/kaspanet/kaspad/infrastructure/config"
 	"github.com/kaspanet/kaspad/infrastructure/network/addressmanager"
@@ -20,14 +21,7 @@ import (
 
 // OnBlockAddedToDAGHandler is a handler function that's triggered
 // when a block is added to the DAG
-type OnBlockAddedToDAGHandler func(block *externalapi.DomainBlock, virtualChangeSet *externalapi.VirtualChangeSet) error
+type OnBlockAddedToDAGHandler func(block *externalapi.DomainBlock, blockInsertionResult *externalapi.BlockInsertionResult) error
-
-// OnVirtualChangeHandler is a handler function that's triggered when the virtual changes
-type OnVirtualChangeHandler func(virtualChangeSet *externalapi.VirtualChangeSet) error
-
-// OnPruningPointUTXOSetOverrideHandler is a handle function that's triggered whenever the UTXO set
-// resets due to pruning point change via IBD.
-type OnPruningPointUTXOSetOverrideHandler func() error
 
 // OnTransactionAddedToMempoolHandler is a handler function that's triggered
 // when a transaction is added to the mempool
@@ -44,15 +38,15 @@ type FlowContext struct {
 
 	timeStarted int64
 
-	onVirtualChangeHandler               OnVirtualChangeHandler
+	onBlockAddedToDAGHandler           OnBlockAddedToDAGHandler
-	onBlockAddedToDAGHandler             OnBlockAddedToDAGHandler
+	onTransactionAddedToMempoolHandler OnTransactionAddedToMempoolHandler
-	onPruningPointUTXOSetOverrideHandler OnPruningPointUTXOSetOverrideHandler
-	onTransactionAddedToMempoolHandler   OnTransactionAddedToMempoolHandler
 
-	lastRebroadcastTime         time.Time
+	transactionsToRebroadcastLock sync.Mutex
-	sharedRequestedTransactions *SharedRequestedTransactions
+	transactionsToRebroadcast     map[externalapi.DomainTransactionID]*externalapi.DomainTransaction
+	lastRebroadcastTime           time.Time
+	sharedRequestedTransactions   *transactionrelay.SharedRequestedTransactions
 
-	sharedRequestedBlocks *SharedRequestedBlocks
+	sharedRequestedBlocks *blockrelay.SharedRequestedBlocks
 
 	ibdPeer      *peerpkg.Peer
 	ibdPeerMutex sync.RWMutex
@@ -62,12 +56,6 @@ type FlowContext struct {
 
 	orphans      map[externalapi.DomainHash]*externalapi.DomainBlock
 	orphansMutex sync.RWMutex
-
-	transactionIDsToPropagate        []*externalapi.DomainTransactionID
-	lastTransactionIDPropagationTime time.Time
-	transactionIDPropagationLock     sync.Mutex
-
-	shutdownChan chan struct{}
 }
 
 // New returns a new instance of FlowContext.
@@ -75,48 +63,25 @@ func New(cfg *config.Config, domain domain.Domain, addressManager *addressmanage
 	netAdapter *netadapter.NetAdapter, connectionManager *connmanager.ConnectionManager) *FlowContext {
 
 	return &FlowContext{
-		cfg:                              cfg,
+		cfg:                         cfg,
-		netAdapter:                       netAdapter,
+		netAdapter:                  netAdapter,
-		domain:                           domain,
+		domain:                      domain,
-		addressManager:                   addressManager,
+		addressManager:              addressManager,
-		connectionManager:                connectionManager,
+		connectionManager:           connectionManager,
-		sharedRequestedTransactions:      NewSharedRequestedTransactions(),
+		sharedRequestedTransactions: transactionrelay.NewSharedRequestedTransactions(),
-		sharedRequestedBlocks:            NewSharedRequestedBlocks(),
+		sharedRequestedBlocks:       blockrelay.NewSharedRequestedBlocks(),
-		peers:                            make(map[id.ID]*peerpkg.Peer),
+		peers:                       make(map[id.ID]*peerpkg.Peer),
-		orphans:                          make(map[externalapi.DomainHash]*externalapi.DomainBlock),
+		transactionsToRebroadcast:   make(map[externalapi.DomainTransactionID]*externalapi.DomainTransaction),
-		timeStarted:                      mstime.Now().UnixMilliseconds(),
+		orphans:                     make(map[externalapi.DomainHash]*externalapi.DomainBlock),
-		transactionIDsToPropagate:        []*externalapi.DomainTransactionID{},
+		timeStarted:                 mstime.Now().UnixMilliseconds(),
-		lastTransactionIDPropagationTime: time.Now(),
-		shutdownChan:                     make(chan struct{}),
 	}
 }
 
-// Close signals to all flows the the protocol manager is closed.
-func (f *FlowContext) Close() {
-	close(f.shutdownChan)
-}
-
-// ShutdownChan is a chan where flows can subscribe to shutdown
-// event.
-func (f *FlowContext) ShutdownChan() <-chan struct{} {
-	return f.shutdownChan
-}
-
-// SetOnVirtualChangeHandler sets the onVirtualChangeHandler handler
-func (f *FlowContext) SetOnVirtualChangeHandler(onVirtualChangeHandler OnVirtualChangeHandler) {
-	f.onVirtualChangeHandler = onVirtualChangeHandler
-}
-
 // SetOnBlockAddedToDAGHandler sets the onBlockAddedToDAG handler
 func (f *FlowContext) SetOnBlockAddedToDAGHandler(onBlockAddedToDAGHandler OnBlockAddedToDAGHandler) {
 	f.onBlockAddedToDAGHandler = onBlockAddedToDAGHandler
 }
 
-// SetOnPruningPointUTXOSetOverrideHandler sets the onPruningPointUTXOSetOverrideHandler handler
-func (f *FlowContext) SetOnPruningPointUTXOSetOverrideHandler(onPruningPointUTXOSetOverrideHandler OnPruningPointUTXOSetOverrideHandler) {
-	f.onPruningPointUTXOSetOverrideHandler = onPruningPointUTXOSetOverrideHandler
-}
-
 // SetOnTransactionAddedToMempoolHandler sets the onTransactionAddedToMempool handler
 func (f *FlowContext) SetOnTransactionAddedToMempoolHandler(onTransactionAddedToMempoolHandler OnTransactionAddedToMempoolHandler) {
 	f.onTransactionAddedToMempoolHandler = onTransactionAddedToMempoolHandler

app/protocol/flowcontext/log.go

@@ -2,6 +2,8 @@ package flowcontext
 
 import (
 	"github.com/kaspanet/kaspad/infrastructure/logger"
+	"github.com/kaspanet/kaspad/util/panics"
 )
 
-var log = logger.RegisterSubSystem("PROT")
+var log, _ = logger.Get(logger.SubsystemTags.PROT)
+var spawn = panics.GoroutineWrapperFunc(log)

app/protocol/flowcontext/orphans.go

@@ -17,8 +17,8 @@ const maxOrphans = 600
 
 // UnorphaningResult is the result of unorphaning a block
 type UnorphaningResult struct {
-	block            *externalapi.DomainBlock
+	block                *externalapi.DomainBlock
-	virtualChangeSet *externalapi.VirtualChangeSet
+	blockInsertionResult *externalapi.BlockInsertionResult
 }
 
 // AddOrphan adds the block to the orphan set
@@ -73,10 +73,10 @@ func (f *FlowContext) UnorphanBlocks(rootBlock *externalapi.DomainBlock) ([]*Uno
 		orphanBlock := f.orphans[orphanHash]
 
 		log.Debugf("Considering to unorphan block %s with parents %s",
-			orphanHash, orphanBlock.Header.DirectParents())
+			orphanHash, orphanBlock.Header.ParentHashes())
 
 		canBeUnorphaned := true
-		for _, orphanBlockParentHash := range orphanBlock.Header.DirectParents() {
+		for _, orphanBlockParentHash := range orphanBlock.Header.ParentHashes() {
 			orphanBlockParentInfo, err := f.domain.Consensus().GetBlockInfo(orphanBlockParentHash)
 			if err != nil {
 				return nil, err
@@ -90,14 +90,14 @@ func (f *FlowContext) UnorphanBlocks(rootBlock *externalapi.DomainBlock) ([]*Uno
 			}
 		}
 		if canBeUnorphaned {
-			virtualChangeSet, unorphaningSucceeded, err := f.unorphanBlock(orphanHash)
+			blockInsertionResult, unorphaningSucceeded, err := f.unorphanBlock(orphanHash)
 			if err != nil {
 				return nil, err
 			}
 			if unorphaningSucceeded {
 				unorphaningResults = append(unorphaningResults, &UnorphaningResult{
-					block:            orphanBlock,
+					block:                orphanBlock,
-					virtualChangeSet: virtualChangeSet,
+					blockInsertionResult: blockInsertionResult,
 				})
 				processQueue = f.addChildOrphansToProcessQueue(&orphanHash, processQueue)
 			}
@@ -133,7 +133,7 @@ func (f *FlowContext) addChildOrphansToProcessQueue(blockHash *externalapi.Domai
 func (f *FlowContext) findChildOrphansOfBlock(blockHash *externalapi.DomainHash) []externalapi.DomainHash {
 	var childOrphans []externalapi.DomainHash
 	for orphanHash, orphanBlock := range f.orphans {
-		for _, orphanBlockParentHash := range orphanBlock.Header.DirectParents() {
+		for _, orphanBlockParentHash := range orphanBlock.Header.ParentHashes() {
 			if orphanBlockParentHash.Equal(blockHash) {
 				childOrphans = append(childOrphans, orphanHash)
 				break
@@ -143,14 +143,14 @@ func (f *FlowContext) findChildOrphansOfBlock(blockHash *externalapi.DomainHash)
 	return childOrphans
 }
 
-func (f *FlowContext) unorphanBlock(orphanHash externalapi.DomainHash) (*externalapi.VirtualChangeSet, bool, error) {
+func (f *FlowContext) unorphanBlock(orphanHash externalapi.DomainHash) (*externalapi.BlockInsertionResult, bool, error) {
 	orphanBlock, ok := f.orphans[orphanHash]
 	if !ok {
 		return nil, false, errors.Errorf("attempted to unorphan a non-orphan block %s", orphanHash)
 	}
 	delete(f.orphans, orphanHash)
 
-	virtualChangeSet, err := f.domain.Consensus().ValidateAndInsertBlock(orphanBlock, true)
+	blockInsertionResult, err := f.domain.Consensus().ValidateAndInsertBlock(orphanBlock)
 	if err != nil {
 		if errors.As(err, &ruleerrors.RuleError{}) {
 			log.Warnf("Validation failed for orphan block %s: %s", orphanHash, err)
@@ -160,7 +160,7 @@ func (f *FlowContext) unorphanBlock(orphanHash externalapi.DomainHash) (*externa
 	}
 
 	log.Infof("Unorphaned block %s", orphanHash)
-	return virtualChangeSet, true, nil
+	return blockInsertionResult, true, nil
 }
 
 // GetOrphanRoots returns the roots of the missing ancestors DAG of the given orphan
@@ -201,7 +201,7 @@ func (f *FlowContext) GetOrphanRoots(orphan *externalapi.DomainHash) ([]*externa
 			continue
 		}
 
-		for _, parent := range block.Header.DirectParents() {
+		for _, parent := range block.Header.ParentHashes() {
 			if !addedToQueueSet.Contains(parent) {
 				queue = append(queue, parent)
 				addedToQueueSet.Add(parent)

app/protocol/flowcontext/should_mine.go

@@ -25,10 +25,6 @@ func (f *FlowContext) ShouldMine() (bool, error) {
 		return false, err
 	}
 
-	if virtualSelectedParent.Equal(f.Config().NetParams().GenesisHash) {
-		return false, nil
-	}
-
 	virtualSelectedParentHeader, err := f.domain.Consensus().GetBlockHeader(virtualSelectedParent)
 	if err != nil {
 		return false, err

app/protocol/flowcontext/transactions.go

@@ -4,22 +4,36 @@ import (
 	"time"
 
 	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/app/protocol/flows/transactionrelay"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
 )
 
-// TransactionIDPropagationInterval is the interval between transaction IDs propagations
-const TransactionIDPropagationInterval = 500 * time.Millisecond
-
 // AddTransaction adds transaction to the mempool and propagates it.
-func (f *FlowContext) AddTransaction(tx *externalapi.DomainTransaction, allowOrphan bool) error {
+func (f *FlowContext) AddTransaction(tx *externalapi.DomainTransaction) error {
-	acceptedTransactions, err := f.Domain().MiningManager().ValidateAndInsertTransaction(tx, true, allowOrphan)
+	f.transactionsToRebroadcastLock.Lock()
+	defer f.transactionsToRebroadcastLock.Unlock()
+
+	err := f.Domain().MiningManager().ValidateAndInsertTransaction(tx, false)
 	if err != nil {
 		return err
 	}
 
-	acceptedTransactionIDs := consensushashing.TransactionIDs(acceptedTransactions)
+	transactionID := consensushashing.TransactionID(tx)
-	return f.EnqueueTransactionIDsForPropagation(acceptedTransactionIDs)
+	f.transactionsToRebroadcast[*transactionID] = tx
+	inv := appmessage.NewMsgInvTransaction([]*externalapi.DomainTransactionID{transactionID})
+	return f.Broadcast(inv)
+}
+
+func (f *FlowContext) updateTransactionsToRebroadcast(block *externalapi.DomainBlock) {
+	f.transactionsToRebroadcastLock.Lock()
+	defer f.transactionsToRebroadcastLock.Unlock()
+	// Note: if the block is red, its transactions won't be rebroadcasted
+	// anymore, although they are not included in the UTXO set.
+	// This is probably ok, since red blocks are quite rare.
+	for _, tx := range block.Transactions {
+		delete(f.transactionsToRebroadcast, *consensushashing.TransactionID(tx))
+	}
 }
 
 func (f *FlowContext) shouldRebroadcastTransactions() bool {
@@ -27,9 +41,22 @@ func (f *FlowContext) shouldRebroadcastTransactions() bool {
 	return time.Since(f.lastRebroadcastTime) > rebroadcastInterval
 }
 
+func (f *FlowContext) txIDsToRebroadcast() []*externalapi.DomainTransactionID {
+	f.transactionsToRebroadcastLock.Lock()
+	defer f.transactionsToRebroadcastLock.Unlock()
+
+	txIDs := make([]*externalapi.DomainTransactionID, len(f.transactionsToRebroadcast))
+	i := 0
+	for _, tx := range f.transactionsToRebroadcast {
+		txIDs[i] = consensushashing.TransactionID(tx)
+		i++
+	}
+	return txIDs
+}
+
 // SharedRequestedTransactions returns a *transactionrelay.SharedRequestedTransactions for sharing
 // data about requested transactions between different peers.
-func (f *FlowContext) SharedRequestedTransactions() *SharedRequestedTransactions {
+func (f *FlowContext) SharedRequestedTransactions() *transactionrelay.SharedRequestedTransactions {
 	return f.sharedRequestedTransactions
 }
 
@@ -40,42 +67,3 @@ func (f *FlowContext) OnTransactionAddedToMempool() {
 		f.onTransactionAddedToMempoolHandler()
 	}
 }
-
-// EnqueueTransactionIDsForPropagation add the given transactions IDs to a set of IDs to
-// propagate. The IDs will be broadcast to all peers within a single transaction Inv message.
-// The broadcast itself may happen only during a subsequent call to this method
-func (f *FlowContext) EnqueueTransactionIDsForPropagation(transactionIDs []*externalapi.DomainTransactionID) error {
-	f.transactionIDPropagationLock.Lock()
-	defer f.transactionIDPropagationLock.Unlock()
-
-	f.transactionIDsToPropagate = append(f.transactionIDsToPropagate, transactionIDs...)
-
-	return f.maybePropagateTransactions()
-}
-
-func (f *FlowContext) maybePropagateTransactions() error {
-	if time.Since(f.lastTransactionIDPropagationTime) < TransactionIDPropagationInterval &&
-		len(f.transactionIDsToPropagate) < appmessage.MaxInvPerTxInvMsg {
-		return nil
-	}
-
-	for len(f.transactionIDsToPropagate) > 0 {
-		transactionIDsToBroadcast := f.transactionIDsToPropagate
-		if len(transactionIDsToBroadcast) > appmessage.MaxInvPerTxInvMsg {
-			transactionIDsToBroadcast = f.transactionIDsToPropagate[:len(transactionIDsToBroadcast)]
-		}
-		log.Debugf("Transaction propagation: broadcasting %d transactions", len(transactionIDsToBroadcast))
-
-		inv := appmessage.NewMsgInvTransaction(transactionIDsToBroadcast)
-		err := f.Broadcast(inv)
-		if err != nil {
-			return err
-		}
-
-		f.transactionIDsToPropagate = f.transactionIDsToPropagate[len(transactionIDsToBroadcast):]
-	}
-
-	f.lastTransactionIDPropagationTime = time.Now()
-
-	return nil
-}

app/protocol/flows/addressexchange/receiveaddresses.go

@@ -35,5 +35,6 @@ func ReceiveAddresses(context ReceiveAddressesContext, incomingRoute *router.Rou
 		return protocolerrors.Errorf(true, "address count exceeded %d", addressmanager.GetAddressesMax)
 	}
 
-	return context.AddressManager().AddAddresses(msgAddresses.AddressList...)
+	context.AddressManager().AddAddresses(msgAddresses.AddressList...)
+	return nil
 }

app/protocol/flows/blockrelay/block_locator.go

@@ -0,0 +1,29 @@
+package blockrelay
+
+import (
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/app/protocol/common"
+	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+func (flow *handleRelayInvsFlow) sendGetBlockLocator(lowHash *externalapi.DomainHash,
+	highHash *externalapi.DomainHash, limit uint32) error {
+
+	msgGetBlockLocator := appmessage.NewMsgRequestBlockLocator(lowHash, highHash, limit)
+	return flow.outgoingRoute.Enqueue(msgGetBlockLocator)
+}
+
+func (flow *handleRelayInvsFlow) receiveBlockLocator() (blockLocatorHashes []*externalapi.DomainHash, err error) {
+	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
+	if err != nil {
+		return nil, err
+	}
+	msgBlockLocator, ok := message.(*appmessage.MsgBlockLocator)
+	if !ok {
+		return nil,
+			protocolerrors.Errorf(true, "received unexpected message type. "+
+				"expected: %s, got: %s", appmessage.CmdBlockLocator, message.Command())
+	}
+	return msgBlockLocator.BlockLocatorHashes, nil
+}

app/protocol/flows/blockrelay/handle_ibd_block_locator.go

@@ -5,7 +5,6 @@ import (
 	"github.com/kaspanet/kaspad/app/protocol/peer"
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
 	"github.com/kaspanet/kaspad/domain"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 )
 
@@ -45,9 +44,7 @@ func HandleIBDBlockLocator(context HandleIBDBlockLocatorContext, incomingRoute *
 			if err != nil {
 				return err
 			}
-
+			if !blockInfo.Exists {
-			// The IBD block locator is checking only existing blocks with bodies.
-			if !blockInfo.Exists || blockInfo.BlockStatus == externalapi.StatusHeaderOnly {
 				continue
 			}
 

app/protocol/flows/blockrelay/handle_ibd_block_requests.go

@@ -48,7 +48,7 @@ func HandleIBDBlockRequests(context HandleIBDBlockRequestsContext, incomingRoute
 			if err != nil {
 				return err
 			}
-			log.Debugf("sent %d out of %d", i+1, len(msgRequestIBDBlocks.Hashes))
+			log.Debugf("sent %d out of %d", i, len(msgRequestIBDBlocks.Hashes))
 		}
 	}
 }

app/protocol/flows/blockrelay/handle_pruning_point_hash_requests.go

@@ -0,0 +1,51 @@
+package blockrelay
+
+import (
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/domain"
+	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
+)
+
+// HandlePruningPointHashRequestsFlowContext is the interface for the context needed for the handlePruningPointHashRequestsFlow flow.
+type HandlePruningPointHashRequestsFlowContext interface {
+	Domain() domain.Domain
+}
+
+type handlePruningPointHashRequestsFlow struct {
+	HandlePruningPointHashRequestsFlowContext
+	incomingRoute, outgoingRoute *router.Route
+}
+
+// HandlePruningPointHashRequests listens to appmessage.MsgRequestPruningPointHashMessage messages and sends
+// the pruning point hash as response.
+func HandlePruningPointHashRequests(context HandlePruningPointHashRequestsFlowContext, incomingRoute,
+	outgoingRoute *router.Route) error {
+	flow := &handlePruningPointHashRequestsFlow{
+		HandlePruningPointHashRequestsFlowContext: context,
+		incomingRoute: incomingRoute,
+		outgoingRoute: outgoingRoute,
+	}
+
+	return flow.start()
+}
+
+func (flow *handlePruningPointHashRequestsFlow) start() error {
+	for {
+		_, err := flow.incomingRoute.Dequeue()
+		if err != nil {
+			return err
+		}
+		log.Debugf("Got request for a pruning point hash")
+
+		pruningPoint, err := flow.Domain().Consensus().PruningPoint()
+		if err != nil {
+			return err
+		}
+
+		err = flow.outgoingRoute.Enqueue(appmessage.NewPruningPointHashMessage(pruningPoint))
+		if err != nil {
+			return err
+		}
+		log.Debugf("Sent pruning point hash %s", pruningPoint)
+	}
+}

app/protocol/flows/blockrelay/handle_relay_invs.go

@@ -3,7 +3,6 @@ package blockrelay
 import (
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol/common"
-	"github.com/kaspanet/kaspad/app/protocol/flowcontext"
 	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
 	"github.com/kaspanet/kaspad/domain"
@@ -24,16 +23,15 @@ var orphanResolutionRange uint32 = 5
 type RelayInvsContext interface {
 	Domain() domain.Domain
 	Config() *config.Config
-	OnNewBlock(block *externalapi.DomainBlock, virtualChangeSet *externalapi.VirtualChangeSet) error
+	OnNewBlock(block *externalapi.DomainBlock, blockInsertionResult *externalapi.BlockInsertionResult) error
-	OnVirtualChange(virtualChangeSet *externalapi.VirtualChangeSet) error
+	SharedRequestedBlocks() *SharedRequestedBlocks
-	OnPruningPointUTXOSetOverride() error
-	SharedRequestedBlocks() *flowcontext.SharedRequestedBlocks
 	Broadcast(message appmessage.Message) error
 	AddOrphan(orphanBlock *externalapi.DomainBlock)
 	GetOrphanRoots(orphanHash *externalapi.DomainHash) ([]*externalapi.DomainHash, bool, error)
 	IsOrphan(blockHash *externalapi.DomainHash) bool
 	IsIBDRunning() bool
-	IsRecoverableError(err error) bool
+	TrySetIBDRunning(ibdPeer *peerpkg.Peer) bool
+	UnsetIBDRunning()
 }
 
 type handleRelayInvsFlow struct {
@@ -55,10 +53,7 @@ func HandleRelayInvs(context RelayInvsContext, incomingRoute *router.Route, outg
 		peer:             peer,
 		invsQueue:        make([]*appmessage.MsgInvRelayBlock, 0),
 	}
-	err := flow.start()
+	return flow.start()
-	// Currently, HandleRelayInvs flow is the only place where IBD is triggered, so the channel can be closed now
-	close(peer.IBDRequestChannel())
-	return err
 }
 
 func (flow *handleRelayInvsFlow) start() error {
@@ -84,18 +79,7 @@ func (flow *handleRelayInvsFlow) start() error {
 			continue
 		}
 
-		isGenesisVirtualSelectedParent, err := flow.isGenesisVirtualSelectedParent()
-		if err != nil {
-			return err
-		}
-
 		if flow.IsOrphan(inv.Hash) {
-			if flow.Config().NetParams().DisallowDirectBlocksOnTopOfGenesis && !flow.Config().AllowSubmitBlockWhenNotSynced && isGenesisVirtualSelectedParent {
-				log.Infof("Cannot process orphan %s for a node with only the genesis block. The node needs to IBD "+
-					"to the recent pruning point before normal operation can resume.", inv.Hash)
-				continue
-			}
-
 			log.Debugf("Block %s is a known orphan. Requesting its missing ancestors", inv.Hash)
 			err := flow.AddOrphanRootsToQueue(inv.Hash)
 			if err != nil {
@@ -120,24 +104,9 @@ func (flow *handleRelayInvsFlow) start() error {
 			continue
 		}
 
-		err = flow.banIfBlockIsHeaderOnly(block)
-		if err != nil {
-			return err
-		}
-
-		if flow.Config().NetParams().DisallowDirectBlocksOnTopOfGenesis && !flow.Config().AllowSubmitBlockWhenNotSynced && !flow.Config().Devnet && flow.isChildOfGenesis(block) {
-			log.Infof("Cannot process %s because it's a direct child of genesis.", consensushashing.BlockHash(block))
-			continue
-		}
-
 		log.Debugf("Processing block %s", inv.Hash)
-		missingParents, virtualChangeSet, err := flow.processBlock(block)
+		missingParents, blockInsertionResult, err := flow.processBlock(block)
 		if err != nil {
-			if errors.Is(err, ruleerrors.ErrPrunedBlock) {
-				log.Infof("Ignoring pruned block %s", inv.Hash)
-				continue
-			}
-
 			if errors.Is(err, ruleerrors.ErrDuplicateBlock) {
 				log.Infof("Ignoring duplicate block %s", inv.Hash)
 				continue
@@ -146,7 +115,7 @@ func (flow *handleRelayInvsFlow) start() error {
 		}
 		if len(missingParents) > 0 {
 			log.Debugf("Block %s is orphan and has missing parents: %s", inv.Hash, missingParents)
-			err := flow.processOrphan(block)
+			err := flow.processOrphan(block, missingParents)
 			if err != nil {
 				return err
 			}
@@ -159,22 +128,13 @@ func (flow *handleRelayInvsFlow) start() error {
 			return err
 		}
 		log.Infof("Accepted block %s via relay", inv.Hash)
-		err = flow.OnNewBlock(block, virtualChangeSet)
+		err = flow.OnNewBlock(block, blockInsertionResult)
 		if err != nil {
 			return err
 		}
 	}
 }
 
-func (flow *handleRelayInvsFlow) banIfBlockIsHeaderOnly(block *externalapi.DomainBlock) error {
-	if len(block.Transactions) == 0 {
-		return protocolerrors.Errorf(true, "sent header of %s block where expected block with body",
-			consensushashing.BlockHash(block))
-	}
-
-	return nil
-}
-
 func (flow *handleRelayInvsFlow) readInv() (*appmessage.MsgInvRelayBlock, error) {
 	if len(flow.invsQueue) > 0 {
 		var inv *appmessage.MsgInvRelayBlock
@@ -196,14 +156,14 @@ func (flow *handleRelayInvsFlow) readInv() (*appmessage.MsgInvRelayBlock, error)
 }
 
 func (flow *handleRelayInvsFlow) requestBlock(requestHash *externalapi.DomainHash) (*externalapi.DomainBlock, bool, error) {
-	exists := flow.SharedRequestedBlocks().AddIfNotExists(requestHash)
+	exists := flow.SharedRequestedBlocks().addIfNotExists(requestHash)
 	if exists {
 		return nil, true, nil
 	}
 
 	// In case the function returns earlier than expected, we want to make sure flow.SharedRequestedBlocks() is
 	// clean from any pending blocks.
-	defer flow.SharedRequestedBlocks().Remove(requestHash)
+	defer flow.SharedRequestedBlocks().remove(requestHash)
 
 	getRelayBlocksMsg := appmessage.NewMsgRequestRelayBlocks([]*externalapi.DomainHash{requestHash})
 	err := flow.outgoingRoute.Enqueue(getRelayBlocksMsg)
@@ -246,9 +206,9 @@ func (flow *handleRelayInvsFlow) readMsgBlock() (msgBlock *appmessage.MsgBlock,
 	}
 }
 
-func (flow *handleRelayInvsFlow) processBlock(block *externalapi.DomainBlock) ([]*externalapi.DomainHash, *externalapi.VirtualChangeSet, error) {
+func (flow *handleRelayInvsFlow) processBlock(block *externalapi.DomainBlock) ([]*externalapi.DomainHash, *externalapi.BlockInsertionResult, error) {
 	blockHash := consensushashing.BlockHash(block)
-	virtualChangeSet, err := flow.Domain().Consensus().ValidateAndInsertBlock(block, true)
+	blockInsertionResult, err := flow.Domain().Consensus().ValidateAndInsertBlock(block)
 	if err != nil {
 		if !errors.As(err, &ruleerrors.RuleError{}) {
 			return nil, nil, errors.Wrapf(err, "failed to process block %s", blockHash)
@@ -261,7 +221,7 @@ func (flow *handleRelayInvsFlow) processBlock(block *externalapi.DomainBlock) ([
 		log.Warnf("Rejected block %s from %s: %s", blockHash, flow.peer, err)
 		return nil, nil, protocolerrors.Wrapf(true, err, "got invalid block %s from relay", blockHash)
 	}
-	return nil, virtualChangeSet, nil
+	return nil, blockInsertionResult, nil
 }
 
 func (flow *handleRelayInvsFlow) relayBlock(block *externalapi.DomainBlock) error {
@@ -269,7 +229,7 @@ func (flow *handleRelayInvsFlow) relayBlock(block *externalapi.DomainBlock) erro
 	return flow.Broadcast(appmessage.NewMsgInvBlock(blockHash))
 }
 
-func (flow *handleRelayInvsFlow) processOrphan(block *externalapi.DomainBlock) error {
+func (flow *handleRelayInvsFlow) processOrphan(block *externalapi.DomainBlock, missingParents []*externalapi.DomainHash) error {
 	blockHash := consensushashing.BlockHash(block)
 
 	// Return if the block has been orphaned from elsewhere already
@@ -284,19 +244,6 @@ func (flow *handleRelayInvsFlow) processOrphan(block *externalapi.DomainBlock) e
 		return err
 	}
 	if isBlockInOrphanResolutionRange {
-		if flow.Config().NetParams().DisallowDirectBlocksOnTopOfGenesis && !flow.Config().AllowSubmitBlockWhenNotSynced {
-			isGenesisVirtualSelectedParent, err := flow.isGenesisVirtualSelectedParent()
-			if err != nil {
-				return err
-			}
-
-			if isGenesisVirtualSelectedParent {
-				log.Infof("Cannot process orphan %s for a node with only the genesis block. The node needs to IBD "+
-					"to the recent pruning point before normal operation can resume.", blockHash)
-				return nil
-			}
-		}
-
 		log.Debugf("Block %s is within orphan resolution range. "+
 			"Adding it to the orphan set", blockHash)
 		flow.AddOrphan(block)
@@ -307,28 +254,7 @@ func (flow *handleRelayInvsFlow) processOrphan(block *externalapi.DomainBlock) e
 	// Start IBD unless we already are in IBD
 	log.Debugf("Block %s is out of orphan resolution range. "+
 		"Attempting to start IBD against it.", blockHash)
-
+	return flow.runIBDIfNotRunning(blockHash)
-	// Send the block to IBD flow via the IBDRequestChannel.
-	// Note that this is a non-blocking send, since if IBD is already running, there is no need to trigger it
-	select {
-	case flow.peer.IBDRequestChannel() <- block:
-	default:
-	}
-	return nil
-}
-
-func (flow *handleRelayInvsFlow) isGenesisVirtualSelectedParent() (bool, error) {
-	virtualSelectedParent, err := flow.Domain().Consensus().GetVirtualSelectedParent()
-	if err != nil {
-		return false, err
-	}
-
-	return virtualSelectedParent.Equal(flow.Config().NetParams().GenesisHash), nil
-}
-
-func (flow *handleRelayInvsFlow) isChildOfGenesis(block *externalapi.DomainBlock) bool {
-	parents := block.Header.DirectParents()
-	return len(parents) == 1 && parents[0].Equal(flow.Config().NetParams().GenesisHash)
 }
 
 // isBlockInOrphanResolutionRange finds out whether the given blockHash should be
@@ -337,7 +263,8 @@ func (flow *handleRelayInvsFlow) isChildOfGenesis(block *externalapi.DomainBlock
 // In the response, if we know none of the hashes, we should retrieve the given
 // blockHash via IBD. Otherwise, via unorphaning.
 func (flow *handleRelayInvsFlow) isBlockInOrphanResolutionRange(blockHash *externalapi.DomainHash) (bool, error) {
-	err := flow.sendGetBlockLocator(blockHash, orphanResolutionRange)
+	lowHash := flow.Config().ActiveNetParams.GenesisHash
+	err := flow.sendGetBlockLocator(lowHash, blockHash, orphanResolutionRange)
 	if err != nil {
 		return false, err
 	}

app/protocol/flows/blockrelay/handle_request_block_locator.go

@@ -32,19 +32,20 @@ func HandleRequestBlockLocator(context RequestBlockLocatorContext, incomingRoute
 
 func (flow *handleRequestBlockLocatorFlow) start() error {
 	for {
-		highHash, limit, err := flow.receiveGetBlockLocator()
+		lowHash, highHash, limit, err := flow.receiveGetBlockLocator()
 		if err != nil {
 			return err
 		}
-		log.Debugf("Received getBlockLocator with highHash: %s, limit: %d", highHash, limit)
+		log.Debugf("Received getBlockLocator with lowHash: %s, highHash: %s, limit: %d",
+			lowHash, highHash, limit)
 
-		locator, err := flow.Domain().Consensus().CreateBlockLocatorFromPruningPoint(highHash, limit)
+		locator, err := flow.Domain().Consensus().CreateBlockLocator(lowHash, highHash, limit)
 		if err != nil || len(locator) == 0 {
 			if err != nil {
-				log.Debugf("Received error from CreateBlockLocatorFromPruningPoint: %s", err)
+				log.Debugf("Received error from CreateBlockLocator: %s", err)
 			}
 			return protocolerrors.Errorf(true, "couldn't build a block "+
-				"locator between the pruning point and %s", highHash)
+				"locator between blocks %s and %s", lowHash, highHash)
 		}
 
 		err = flow.sendBlockLocator(locator)
@@ -54,15 +55,16 @@ func (flow *handleRequestBlockLocatorFlow) start() error {
 	}
 }
 
-func (flow *handleRequestBlockLocatorFlow) receiveGetBlockLocator() (highHash *externalapi.DomainHash, limit uint32, err error) {
+func (flow *handleRequestBlockLocatorFlow) receiveGetBlockLocator() (lowHash *externalapi.DomainHash,
+	highHash *externalapi.DomainHash, limit uint32, err error) {
 
 	message, err := flow.incomingRoute.Dequeue()
 	if err != nil {
-		return nil, 0, err
+		return nil, nil, 0, err
 	}
 	msgGetBlockLocator := message.(*appmessage.MsgRequestBlockLocator)
 
-	return msgGetBlockLocator.HighHash, msgGetBlockLocator.Limit, nil
+	return msgGetBlockLocator.LowHash, msgGetBlockLocator.HighHash, msgGetBlockLocator.Limit, nil
 }
 
 func (flow *handleRequestBlockLocatorFlow) sendBlockLocator(locator externalapi.BlockLocator) error {

app/protocol/flows/blockrelay/handle_request_headers.go

@@ -12,31 +12,31 @@ import (
 
 const ibdBatchSize = router.DefaultMaxMessages
 
-// RequestHeadersContext is the interface for the context needed for the HandleRequestHeaders flow.
+// RequestIBDBlocksContext is the interface for the context needed for the HandleRequestHeaders flow.
-type RequestHeadersContext interface {
+type RequestIBDBlocksContext interface {
 	Domain() domain.Domain
 }
 
-type handleRequestHeadersFlow struct {
+type handleRequestBlocksFlow struct {
-	RequestHeadersContext
+	RequestIBDBlocksContext
 	incomingRoute, outgoingRoute *router.Route
 	peer                         *peer.Peer
 }
 
 // HandleRequestHeaders handles RequestHeaders messages
-func HandleRequestHeaders(context RequestHeadersContext, incomingRoute *router.Route,
+func HandleRequestHeaders(context RequestIBDBlocksContext, incomingRoute *router.Route,
 	outgoingRoute *router.Route, peer *peer.Peer) error {
 
-	flow := &handleRequestHeadersFlow{
+	flow := &handleRequestBlocksFlow{
-		RequestHeadersContext: context,
+		RequestIBDBlocksContext: context,
-		incomingRoute:         incomingRoute,
+		incomingRoute:           incomingRoute,
-		outgoingRoute:         outgoingRoute,
+		outgoingRoute:           outgoingRoute,
-		peer:                  peer,
+		peer:                    peer,
 	}
 	return flow.start()
 }
 
-func (flow *handleRequestHeadersFlow) start() error {
+func (flow *handleRequestBlocksFlow) start() error {
 	for {
 		lowHash, highHash, err := receiveRequestHeaders(flow.incomingRoute)
 		if err != nil {
@@ -49,9 +49,8 @@ func (flow *handleRequestHeadersFlow) start() error {
 
 			// GetHashesBetween is a relatively heavy operation so we limit it
 			// in order to avoid locking the consensus for too long
-			// maxBlocks MUST be >= MergeSetSizeLimit + 1
+			const maxBlueScoreDifference = 1 << 10
-			const maxBlocks = 1 << 10
+			blockHashes, err := flow.Domain().Consensus().GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
-			blockHashes, _, err := flow.Domain().Consensus().GetHashesBetween(lowHash, highHash, maxBlocks)
 			if err != nil {
 				return err
 			}

app/protocol/flows/blockrelay/handle_request_pruning_point_utxo_set_and_block.go

@@ -0,0 +1,144 @@
+package blockrelay
+
+import (
+	"errors"
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/app/protocol/common"
+	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
+	"github.com/kaspanet/kaspad/domain"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/ruleerrors"
+	"github.com/kaspanet/kaspad/infrastructure/logger"
+	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
+)
+
+// HandleRequestPruningPointUTXOSetAndBlockContext is the interface for the context needed for the HandleRequestPruningPointUTXOSetAndBlock flow.
+type HandleRequestPruningPointUTXOSetAndBlockContext interface {
+	Domain() domain.Domain
+}
+
+type handleRequestPruningPointUTXOSetAndBlockFlow struct {
+	HandleRequestPruningPointUTXOSetAndBlockContext
+	incomingRoute, outgoingRoute *router.Route
+}
+
+// HandleRequestPruningPointUTXOSetAndBlock listens to appmessage.MsgRequestPruningPointUTXOSetAndBlock messages and sends
+// the pruning point UTXO set and block body.
+func HandleRequestPruningPointUTXOSetAndBlock(context HandleRequestPruningPointUTXOSetAndBlockContext, incomingRoute,
+	outgoingRoute *router.Route) error {
+	flow := &handleRequestPruningPointUTXOSetAndBlockFlow{
+		HandleRequestPruningPointUTXOSetAndBlockContext: context,
+		incomingRoute: incomingRoute,
+		outgoingRoute: outgoingRoute,
+	}
+
+	return flow.start()
+}
+
+func (flow *handleRequestPruningPointUTXOSetAndBlockFlow) start() error {
+	for {
+		msgRequestPruningPointUTXOSetAndBlock, err := flow.waitForRequestPruningPointUTXOSetAndBlockMessages()
+		if err != nil {
+			return err
+		}
+
+		err = flow.handleRequestPruningPointUTXOSetAndBlockMessage(msgRequestPruningPointUTXOSetAndBlock)
+		if err != nil {
+			return err
+		}
+	}
+}
+
+func (flow *handleRequestPruningPointUTXOSetAndBlockFlow) handleRequestPruningPointUTXOSetAndBlockMessage(
+	msgRequestPruningPointUTXOSetAndBlock *appmessage.MsgRequestPruningPointUTXOSetAndBlock) error {
+
+	onEnd := logger.LogAndMeasureExecutionTime(log, "handleRequestPruningPointUTXOSetAndBlockFlow")
+	defer onEnd()
+
+	log.Debugf("Got request for PruningPointHash UTXOSet and Block")
+
+	err := flow.sendPruningPointBlock(msgRequestPruningPointUTXOSetAndBlock)
+	if err != nil {
+		return err
+	}
+
+	return flow.sendPruningPointUTXOSet(msgRequestPruningPointUTXOSetAndBlock)
+}
+
+func (flow *handleRequestPruningPointUTXOSetAndBlockFlow) waitForRequestPruningPointUTXOSetAndBlockMessages() (
+	*appmessage.MsgRequestPruningPointUTXOSetAndBlock, error) {
+
+	message, err := flow.incomingRoute.Dequeue()
+	if err != nil {
+		return nil, err
+	}
+	msgRequestPruningPointUTXOSetAndBlock, ok := message.(*appmessage.MsgRequestPruningPointUTXOSetAndBlock)
+	if !ok {
+		return nil, protocolerrors.Errorf(true, "received unexpected message type. "+
+			"expected: %s, got: %s", appmessage.CmdRequestPruningPointUTXOSetAndBlock, message.Command())
+	}
+	return msgRequestPruningPointUTXOSetAndBlock, nil
+}
+
+func (flow *handleRequestPruningPointUTXOSetAndBlockFlow) sendPruningPointBlock(
+	msgRequestPruningPointUTXOSetAndBlock *appmessage.MsgRequestPruningPointUTXOSetAndBlock) error {
+
+	block, err := flow.Domain().Consensus().GetBlock(msgRequestPruningPointUTXOSetAndBlock.PruningPointHash)
+	if err != nil {
+		return err
+	}
+	log.Debugf("Retrieved pruning block %s", msgRequestPruningPointUTXOSetAndBlock.PruningPointHash)
+
+	return flow.outgoingRoute.Enqueue(appmessage.NewMsgIBDBlock(appmessage.DomainBlockToMsgBlock(block)))
+}
+
+func (flow *handleRequestPruningPointUTXOSetAndBlockFlow) sendPruningPointUTXOSet(
+	msgRequestPruningPointUTXOSetAndBlock *appmessage.MsgRequestPruningPointUTXOSetAndBlock) error {
+
+	// Send the UTXO set in `step`-sized chunks
+	const step = 1000
+	var fromOutpoint *externalapi.DomainOutpoint
+	chunksSent := 0
+	for {
+		pruningPointUTXOs, err := flow.Domain().Consensus().GetPruningPointUTXOs(
+			msgRequestPruningPointUTXOSetAndBlock.PruningPointHash, fromOutpoint, step)
+		if err != nil {
+			if errors.Is(err, ruleerrors.ErrWrongPruningPointHash) {
+				return flow.outgoingRoute.Enqueue(appmessage.NewMsgUnexpectedPruningPoint())
+			}
+		}
+
+		log.Debugf("Retrieved %d UTXOs for pruning block %s",
+			len(pruningPointUTXOs), msgRequestPruningPointUTXOSetAndBlock.PruningPointHash)
+
+		outpointAndUTXOEntryPairs :=
+			appmessage.DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs(pruningPointUTXOs)
+		err = flow.outgoingRoute.Enqueue(appmessage.NewMsgPruningPointUTXOSetChunk(outpointAndUTXOEntryPairs))
+		if err != nil {
+			return err
+		}
+
+		if len(pruningPointUTXOs) < step {
+			log.Debugf("Finished sending UTXOs for pruning block %s",
+				msgRequestPruningPointUTXOSetAndBlock.PruningPointHash)
+
+			return flow.outgoingRoute.Enqueue(appmessage.NewMsgDonePruningPointUTXOSetChunks())
+		}
+
+		fromOutpoint = pruningPointUTXOs[len(pruningPointUTXOs)-1].Outpoint
+		chunksSent++
+
+		// Wait for the peer to request more chunks every `ibdBatchSize` chunks
+		if chunksSent%ibdBatchSize == 0 {
+			message, err := flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
+			if err != nil {
+				return err
+			}
+			_, ok := message.(*appmessage.MsgRequestNextPruningPointUTXOSetChunk)
+			if !ok {
+				return protocolerrors.Errorf(true, "received unexpected message type. "+
+					"expected: %s, got: %s", appmessage.CmdRequestNextPruningPointUTXOSetChunk, message.Command())
+			}
+		}
+	}
+}

app/protocol/flows/blockrelay/ibd.go

@@ -1,178 +1,100 @@
 package blockrelay
 
 import (
+	"fmt"
+	"time"
+
+	"github.com/kaspanet/kaspad/infrastructure/logger"
+
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol/common"
-	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
-	"github.com/kaspanet/kaspad/domain"
-	"github.com/kaspanet/kaspad/domain/consensus/model"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/ruleerrors"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
-	"github.com/kaspanet/kaspad/infrastructure/config"
-	"github.com/kaspanet/kaspad/infrastructure/logger"
-	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 	"github.com/pkg/errors"
-	"time"
 )
 
-// IBDContext is the interface for the context needed for the HandleIBD flow.
+func (flow *handleRelayInvsFlow) runIBDIfNotRunning(highHash *externalapi.DomainHash) error {
-type IBDContext interface {
-	Domain() domain.Domain
-	Config() *config.Config
-	OnNewBlock(block *externalapi.DomainBlock, virtualChangeSet *externalapi.VirtualChangeSet) error
-	OnVirtualChange(virtualChangeSet *externalapi.VirtualChangeSet) error
-	OnPruningPointUTXOSetOverride() error
-	IsIBDRunning() bool
-	TrySetIBDRunning(ibdPeer *peerpkg.Peer) bool
-	UnsetIBDRunning()
-	IsRecoverableError(err error) bool
-}
-
-type handleIBDFlow struct {
-	IBDContext
-	incomingRoute, outgoingRoute *router.Route
-	peer                         *peerpkg.Peer
-}
-
-// HandleIBD handles IBD
-func HandleIBD(context IBDContext, incomingRoute *router.Route, outgoingRoute *router.Route,
-	peer *peerpkg.Peer) error {
-
-	flow := &handleIBDFlow{
-		IBDContext:    context,
-		incomingRoute: incomingRoute,
-		outgoingRoute: outgoingRoute,
-		peer:          peer,
-	}
-	return flow.start()
-}
-
-func (flow *handleIBDFlow) start() error {
-	for {
-		// Wait for IBD requests triggered by other flows
-		block, ok := <-flow.peer.IBDRequestChannel()
-		if !ok {
-			return nil
-		}
-		err := flow.runIBDIfNotRunning(block)
-		if err != nil {
-			return err
-		}
-	}
-}
-
-func (flow *handleIBDFlow) runIBDIfNotRunning(block *externalapi.DomainBlock) error {
 	wasIBDNotRunning := flow.TrySetIBDRunning(flow.peer)
 	if !wasIBDNotRunning {
 		log.Debugf("IBD is already running")
 		return nil
 	}
+	defer flow.UnsetIBDRunning()
 
-	isFinishedSuccessfully := false
+	log.Debugf("IBD started with peer %s and highHash %s", flow.peer, highHash)
-	defer func() {
-		flow.UnsetIBDRunning()
-		flow.logIBDFinished(isFinishedSuccessfully)
-	}()
 
-	highHash := consensushashing.BlockHash(block)
+	log.Debugf("Syncing headers up to %s", highHash)
-	log.Criticalf("IBD started with peer %s and highHash %s", flow.peer, highHash)
+	headersSynced, err := flow.syncHeaders(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)
-	highestSharedBlockHash, highestSharedBlockFound, err := flow.findHighestSharedBlockHash(highHash)
 	if err != nil {
 		return err
 	}
-	log.Criticalf("Found highest shared chain block %s with peer %s", highestSharedBlockHash, flow.peer)
+	if !headersSynced {
-	checkpoint, err := externalapi.NewDomainHashFromString("05ff0f2e1d201dcaee7c5e567cc2c1d42ca3cce9fefbd3b519dc68b5bb89d0b9")
+		log.Debugf("Aborting IBD because the headers failed to sync")
-	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 {
-		return err
-	}
-
-	if !shouldSync {
 		return nil
 	}
+	log.Debugf("Finished syncing headers up to %s", highHash)
 
-	if shouldDownloadHeadersProof {
+	log.Debugf("Syncing the current pruning point UTXO set")
-		log.Infof("Starting IBD with headers proof")
+	syncedPruningPointUTXOSetSuccessfully, err := flow.syncPruningPointUTXOSet()
-		err := flow.ibdWithHeadersProof(highHash, block.Header.DAAScore())
+	if err != nil {
-		if err != nil {
+		return err
-			return err
-		}
-	} else {
-		if flow.Config().NetParams().DisallowDirectBlocksOnTopOfGenesis && !flow.Config().AllowSubmitBlockWhenNotSynced {
-			isGenesisVirtualSelectedParent, err := flow.isGenesisVirtualSelectedParent()
-			if err != nil {
-				return err
-			}
-
-			if isGenesisVirtualSelectedParent {
-				log.Infof("Cannot IBD to %s because it won't change the pruning point. The node needs to IBD "+
-					"to the recent pruning point before normal operation can resume.", highHash)
-				return nil
-			}
-		}
-
-		err = flow.syncPruningPointFutureHeaders(flow.Domain().Consensus(), highestSharedBlockHash, highHash, block.Header.DAAScore())
-		if err != nil {
-			return err
-		}
 	}
+	if !syncedPruningPointUTXOSetSuccessfully {
+		log.Debugf("Aborting IBD because the pruning point UTXO set failed to sync")
+		return nil
+	}
+	log.Debugf("Finished syncing the current pruning point UTXO set")
 
+	log.Debugf("Downloading block bodies up to %s", highHash)
 	err = flow.syncMissingBlockBodies(highHash)
 	if err != nil {
 		return err
 	}
+	log.Debugf("Finished downloading block bodies up to %s", highHash)
 
-	log.Debugf("Finished syncing blocks up to %s", highHash)
-	isFinishedSuccessfully = true
 	return nil
 }
 
-func (flow *handleIBDFlow) isGenesisVirtualSelectedParent() (bool, error) {
+// syncHeaders attempts to sync headers from the peer. This method may fail
-	virtualSelectedParent, err := flow.Domain().Consensus().GetVirtualSelectedParent()
+// because the peer and us have conflicting pruning points. In that case we
+// return (false, nil) so that we may stop IBD gracefully.
+func (flow *handleRelayInvsFlow) syncHeaders(highHash *externalapi.DomainHash) (bool, error) {
+	log.Debugf("Trying to find highest shared chain block with peer %s with high hash %s", flow.peer, highHash)
+	highestSharedBlockHash, highestSharedBlockFound, err := flow.findHighestSharedBlockHash(highHash)
+	if err != nil {
+		return false, err
+	}
+	if !highestSharedBlockFound {
+		return false, nil
+	}
+	log.Debugf("Found highest shared chain block %s with peer %s", highestSharedBlockHash, flow.peer)
+
+	err = flow.downloadHeaders(highestSharedBlockHash, highHash)
 	if err != nil {
 		return false, err
 	}
 
-	return virtualSelectedParent.Equal(flow.Config().NetParams().GenesisHash), nil
+	// If the highHash has not been received, the peer is misbehaving
-}
+	highHashBlockInfo, err := flow.Domain().Consensus().GetBlockInfo(highHash)
-
+	if err != nil {
-func (flow *handleIBDFlow) logIBDFinished(isFinishedSuccessfully bool) {
+		return false, err
-	successString := "successfully"
-	if !isFinishedSuccessfully {
-		successString = "(interrupted)"
 	}
-	log.Infof("IBD finished %s", successString)
+	if !highHashBlockInfo.Exists {
+		return false, protocolerrors.Errorf(true, "did not receive "+
+			"highHash header %s from peer %s during header download", highHash, flow.peer)
+	}
+	log.Debugf("Headers downloaded from peer %s", flow.peer)
+	return true, nil
 }
 
 // findHighestSharedBlock attempts to find the highest shared block between the peer
 // and this node. This method may fail because the peer and us have conflicting pruning
 // points. In that case we return (nil, false, nil) so that we may stop IBD gracefully.
-func (flow *handleIBDFlow) findHighestSharedBlockHash(
+func (flow *handleRelayInvsFlow) findHighestSharedBlockHash(
 	targetHash *externalapi.DomainHash) (*externalapi.DomainHash, bool, error) {
 
 	log.Debugf("Sending a blockLocator to %s between pruning point and headers selected tip", flow.peer)
@@ -215,7 +137,7 @@ func (flow *handleIBDFlow) findHighestSharedBlockHash(
 	}
 }
 
-func (flow *handleIBDFlow) nextBlockLocator(lowHash, highHash *externalapi.DomainHash) (externalapi.BlockLocator, error) {
+func (flow *handleRelayInvsFlow) nextBlockLocator(lowHash, highHash *externalapi.DomainHash) (externalapi.BlockLocator, error) {
 	log.Debugf("Sending a blockLocator to %s between %s and %s", flow.peer, lowHash, highHash)
 	blockLocator, err := flow.Domain().Consensus().CreateHeadersSelectedChainBlockLocator(lowHash, highHash)
 	if err != nil {
@@ -233,7 +155,7 @@ func (flow *handleIBDFlow) nextBlockLocator(lowHash, highHash *externalapi.Domai
 	return blockLocator, nil
 }
 
-func (flow *handleIBDFlow) findHighestHashIndex(
+func (flow *handleRelayInvsFlow) findHighestHashIndex(
 	highestHash *externalapi.DomainHash, blockLocator externalapi.BlockLocator) (int, error) {
 
 	highestHashIndex := 0
@@ -258,7 +180,7 @@ func (flow *handleIBDFlow) findHighestHashIndex(
 // fetchHighestHash attempts to fetch the highest hash the peer knows amongst the given
 // blockLocator. This method may fail because the peer and us have conflicting pruning
 // points. In that case we return (nil, false, nil) so that we may stop IBD gracefully.
-func (flow *handleIBDFlow) fetchHighestHash(
+func (flow *handleRelayInvsFlow) fetchHighestHash(
 	targetHash *externalapi.DomainHash, blockLocator externalapi.BlockLocator) (*externalapi.DomainHash, bool, error) {
 
 	ibdBlockLocatorMessage := appmessage.NewMsgIBDBlockLocator(targetHash, blockLocator)
@@ -266,7 +188,7 @@ func (flow *handleIBDFlow) fetchHighestHash(
 	if err != nil {
 		return nil, false, err
 	}
-	message, err := flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
+	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
 	if err != nil {
 		return nil, false, err
 	}
@@ -286,28 +208,20 @@ func (flow *handleIBDFlow) fetchHighestHash(
 	}
 }
 
-func (flow *handleIBDFlow) syncPruningPointFutureHeaders(consensus externalapi.Consensus, highestSharedBlockHash *externalapi.DomainHash,
+func (flow *handleRelayInvsFlow) downloadHeaders(highestSharedBlockHash *externalapi.DomainHash,
-	highHash *externalapi.DomainHash, highBlockDAAScore uint64) error {
+	highHash *externalapi.DomainHash) error {
-
-	log.Infof("Downloading headers from %s", flow.peer)
 
 	err := flow.sendRequestHeaders(highestSharedBlockHash, highHash)
 	if err != nil {
 		return err
 	}
 
-	highestSharedBlockHeader, err := consensus.GetBlockHeader(highestSharedBlockHash)
+	// Keep a short queue of blockHeadersMessages so that there's
-	if err != nil {
-		return err
-	}
-	progressReporter := newIBDProgressReporter(highestSharedBlockHeader.DAAScore(), highBlockDAAScore, "block headers")
-
-	// Keep a short queue of BlockHeadersMessages so that there's
 	// never a moment when the node is not validating and inserting
 	// headers
 	blockHeadersMessageChan := make(chan *appmessage.BlockHeadersMessage, 2)
 	errChan := make(chan error)
-	spawn("handleRelayInvsFlow-syncPruningPointFutureHeaders", func() {
+	spawn("handleRelayInvsFlow-downloadHeaders", func() {
 		for {
 			blockHeadersMessage, doneIBD, err := flow.receiveHeaders()
 			if err != nil {
@@ -329,46 +243,33 @@ func (flow *handleIBDFlow) syncPruningPointFutureHeaders(consensus externalapi.C
 		}
 	})
 
-	count := 0
 	for {
 		select {
-		case ibdBlocksMessage, ok := <-blockHeadersMessageChan:
+		case blockHeadersMessage, ok := <-blockHeadersMessageChan:
 			if !ok {
-				// If the highHash has not been received, the peer is misbehaving
-				highHashBlockInfo, err := consensus.GetBlockInfo(highHash)
-				if err != nil {
-					return err
-				}
-				if !highHashBlockInfo.Exists {
-					return protocolerrors.Errorf(true, "did not receive "+
-						"highHash block %s from peer %s during block download", highHash, flow.peer)
-				}
 				return nil
 			}
-			for _, header := range ibdBlocksMessage.BlockHeaders {
+			for _, header := range blockHeadersMessage.BlockHeaders {
-				_, err := flow.processHeader(consensus, header)
+				err = flow.processHeader(header)
 				if err != nil {
 					return err
 				}
 			}
-
-			lastReceivedHeader := ibdBlocksMessage.BlockHeaders[len(ibdBlocksMessage.BlockHeaders)-1]
-			progressReporter.reportProgress(len(ibdBlocksMessage.BlockHeaders), lastReceivedHeader.DAAScore)
 		case err := <-errChan:
 			return err
 		}
 	}
 }
 
-func (flow *handleIBDFlow) sendRequestHeaders(highestSharedBlockHash *externalapi.DomainHash,
+func (flow *handleRelayInvsFlow) sendRequestHeaders(highestSharedBlockHash *externalapi.DomainHash,
 	peerSelectedTipHash *externalapi.DomainHash) error {
 
 	msgGetBlockInvs := appmessage.NewMsgRequstHeaders(highestSharedBlockHash, peerSelectedTipHash)
 	return flow.outgoingRoute.Enqueue(msgGetBlockInvs)
 }
 
-func (flow *handleIBDFlow) receiveHeaders() (msgIBDBlock *appmessage.BlockHeadersMessage, doneHeaders bool, err error) {
+func (flow *handleRelayInvsFlow) receiveHeaders() (msgIBDBlock *appmessage.BlockHeadersMessage, doneIBD bool, err error) {
-	message, err := flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
+	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
 	if err != nil {
 		return nil, false, err
 	}
@@ -380,14 +281,11 @@ func (flow *handleIBDFlow) receiveHeaders() (msgIBDBlock *appmessage.BlockHeader
 	default:
 		return nil, false,
 			protocolerrors.Errorf(true, "received unexpected message type. "+
-				"expected: %s or %s, got: %s",
+				"expected: %s or %s, got: %s", appmessage.CmdHeader, appmessage.CmdDoneHeaders, message.Command())
-				appmessage.CmdBlockHeaders,
-				appmessage.CmdDoneHeaders,
-				message.Command())
 	}
 }
 
-func (flow *handleIBDFlow) processHeader(consensus externalapi.Consensus, msgBlockHeader *appmessage.MsgBlockHeader) (bool, error) {
+func (flow *handleRelayInvsFlow) processHeader(msgBlockHeader *appmessage.MsgBlockHeader) error {
 	header := appmessage.BlockHeaderToDomainBlockHeader(msgBlockHeader)
 	block := &externalapi.DomainBlock{
 		Header:       header,
@@ -395,66 +293,149 @@ func (flow *handleIBDFlow) processHeader(consensus externalapi.Consensus, msgBlo
 	}
 
 	blockHash := consensushashing.BlockHash(block)
-	blockInfo, err := consensus.GetBlockInfo(blockHash)
+	blockInfo, err := flow.Domain().Consensus().GetBlockInfo(blockHash)
 	if err != nil {
-		return false, err
+		return err
 	}
 	if blockInfo.Exists {
 		log.Debugf("Block header %s is already in the DAG. Skipping...", blockHash)
-		return false, nil
+		return nil
 	}
-	_, err = consensus.ValidateAndInsertBlock(block, false)
+	_, err = flow.Domain().Consensus().ValidateAndInsertBlock(block)
 	if err != nil {
 		if !errors.As(err, &ruleerrors.RuleError{}) {
-			return false, errors.Wrapf(err, "failed to process header %s during IBD", blockHash)
+			return errors.Wrapf(err, "failed to process header %s during IBD", blockHash)
 		}
 
 		if errors.Is(err, ruleerrors.ErrDuplicateBlock) {
 			log.Debugf("Skipping block header %s as it is a duplicate", blockHash)
 		} else {
 			log.Infof("Rejected block header %s from %s during IBD: %s", blockHash, flow.peer, err)
-			return false, protocolerrors.Wrapf(true, err, "got invalid block header %s during IBD", blockHash)
+			return protocolerrors.Wrapf(true, err, "got invalid block header %s during IBD", blockHash)
 		}
 	}
-	return true, nil
-}
 
-func (flow *handleIBDFlow) validatePruningPointFutureHeaderTimestamps() error {
-	headerSelectedTipHash, err := flow.Domain().StagingConsensus().GetHeadersSelectedTip()
-	if err != nil {
-		return err
-	}
-	headerSelectedTipHeader, err := flow.Domain().StagingConsensus().GetBlockHeader(headerSelectedTipHash)
-	if err != nil {
-		return err
-	}
-	headerSelectedTipTimestamp := headerSelectedTipHeader.TimeInMilliseconds()
-
-	currentSelectedTipHash, err := flow.Domain().Consensus().GetHeadersSelectedTip()
-	if err != nil {
-		return err
-	}
-	currentSelectedTipHeader, err := flow.Domain().Consensus().GetBlockHeader(currentSelectedTipHash)
-	if err != nil {
-		return err
-	}
-	currentSelectedTipTimestamp := currentSelectedTipHeader.TimeInMilliseconds()
-
-	if headerSelectedTipTimestamp < currentSelectedTipTimestamp {
-		return protocolerrors.Errorf(false, "the timestamp of the candidate selected "+
-			"tip is smaller than the current selected tip")
-	}
-
-	minTimestampDifferenceInMilliseconds := (10 * time.Minute).Milliseconds()
-	if headerSelectedTipTimestamp-currentSelectedTipTimestamp < minTimestampDifferenceInMilliseconds {
-		return protocolerrors.Errorf(false, "difference between the timestamps of "+
-			"the current pruning point and the candidate pruning point is too small. Aborting IBD...")
-	}
 	return nil
 }
 
-func (flow *handleIBDFlow) receiveAndInsertPruningPointUTXOSet(
+func (flow *handleRelayInvsFlow) syncPruningPointUTXOSet() (bool, error) {
-	consensus externalapi.Consensus, pruningPointHash *externalapi.DomainHash) (bool, error) {
+	log.Debugf("Checking if a new pruning point is available")
+	err := flow.outgoingRoute.Enqueue(appmessage.NewMsgRequestPruningPointHashMessage())
+	if err != nil {
+		return false, err
+	}
+	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
+	if err != nil {
+		return false, err
+	}
+	msgPruningPointHash, ok := message.(*appmessage.MsgPruningPointHashMessage)
+	if !ok {
+		return false, protocolerrors.Errorf(true, "received unexpected message type. "+
+			"expected: %s, got: %s", appmessage.CmdPruningPointHash, message.Command())
+	}
+
+	blockInfo, err := flow.Domain().Consensus().GetBlockInfo(msgPruningPointHash.Hash)
+	if err != nil {
+		return false, err
+	}
+
+	if !blockInfo.Exists {
+		return false, errors.Errorf("The pruning point header is missing")
+	}
+
+	if blockInfo.BlockStatus != externalapi.StatusHeaderOnly {
+		log.Debugf("Already has the block data of the new suggested pruning point %s", msgPruningPointHash.Hash)
+		return true, nil
+	}
+
+	log.Infof("Checking if the suggested pruning point %s is compatible to the node DAG", msgPruningPointHash.Hash)
+	isValid, err := flow.Domain().Consensus().IsValidPruningPoint(msgPruningPointHash.Hash)
+	if err != nil {
+		return false, err
+	}
+
+	if !isValid {
+		log.Infof("The suggested pruning point %s is incompatible to this node DAG, so stopping IBD with this"+
+			" peer", msgPruningPointHash.Hash)
+		return false, nil
+	}
+
+	log.Info("Fetching the pruning point UTXO set")
+	succeed, err := flow.fetchMissingUTXOSet(msgPruningPointHash.Hash)
+	if err != nil {
+		return false, err
+	}
+
+	if !succeed {
+		log.Infof("Couldn't successfully fetch the pruning point UTXO set. Stopping IBD.")
+		return false, nil
+	}
+
+	log.Info("Fetched the new pruning point UTXO set")
+	return true, nil
+}
+
+func (flow *handleRelayInvsFlow) fetchMissingUTXOSet(pruningPointHash *externalapi.DomainHash) (succeed bool, err error) {
+	defer func() {
+		err := flow.Domain().Consensus().ClearImportedPruningPointData()
+		if err != nil {
+			panic(fmt.Sprintf("failed to clear imported pruning point data: %s", err))
+		}
+	}()
+
+	err = flow.outgoingRoute.Enqueue(appmessage.NewMsgRequestPruningPointUTXOSetAndBlock(pruningPointHash))
+	if err != nil {
+		return false, err
+	}
+
+	block, err := flow.receivePruningPointBlock()
+	if err != nil {
+		return false, err
+	}
+
+	receivedAll, err := flow.receiveAndInsertPruningPointUTXOSet(pruningPointHash)
+	if err != nil {
+		return false, err
+	}
+	if !receivedAll {
+		return false, nil
+	}
+
+	err = flow.Domain().Consensus().ValidateAndInsertImportedPruningPoint(block)
+	if err != nil {
+		// TODO: Find a better way to deal with finality conflicts.
+		if errors.Is(err, ruleerrors.ErrSuggestedPruningViolatesFinality) {
+			return false, nil
+		}
+		return false, protocolerrors.ConvertToBanningProtocolErrorIfRuleError(err, "error with pruning point UTXO set")
+	}
+
+	return true, nil
+}
+
+func (flow *handleRelayInvsFlow) receivePruningPointBlock() (*externalapi.DomainBlock, error) {
+	onEnd := logger.LogAndMeasureExecutionTime(log, "receivePruningPointBlock")
+	defer onEnd()
+
+	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
+	if err != nil {
+		return nil, err
+	}
+
+	ibdBlockMessage, ok := message.(*appmessage.MsgIBDBlock)
+	if !ok {
+		return nil, protocolerrors.Errorf(true, "received unexpected message type. "+
+			"expected: %s, got: %s", appmessage.CmdIBDBlock, message.Command())
+	}
+	block := appmessage.MsgBlockToDomainBlock(ibdBlockMessage.MsgBlock)
+
+	log.Debugf("Received pruning point block %s", consensushashing.BlockHash(block))
+
+	return block, nil
+}
+
+func (flow *handleRelayInvsFlow) receiveAndInsertPruningPointUTXOSet(
+	pruningPointHash *externalapi.DomainHash) (bool, error) {
 
 	onEnd := logger.LogAndMeasureExecutionTime(log, "receiveAndInsertPruningPointUTXOSet")
 	defer onEnd()
@@ -462,7 +443,7 @@ func (flow *handleIBDFlow) receiveAndInsertPruningPointUTXOSet(
 	receivedChunkCount := 0
 	receivedUTXOCount := 0
 	for {
-		message, err := flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
+		message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
 		if err != nil {
 			return false, err
 		}
@@ -473,7 +454,7 @@ func (flow *handleIBDFlow) receiveAndInsertPruningPointUTXOSet(
 			domainOutpointAndUTXOEntryPairs :=
 				appmessage.OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs(message.OutpointAndUTXOEntryPairs)
 
-			err := consensus.AppendImportedPruningPointUTXOs(domainOutpointAndUTXOEntryPairs)
+			err := flow.Domain().Consensus().AppendImportedPruningPointUTXOs(domainOutpointAndUTXOEntryPairs)
 			if err != nil {
 				return false, err
 			}
@@ -508,7 +489,7 @@ func (flow *handleIBDFlow) receiveAndInsertPruningPointUTXOSet(
 	}
 }
 
-func (flow *handleIBDFlow) syncMissingBlockBodies(highHash *externalapi.DomainHash) error {
+func (flow *handleRelayInvsFlow) syncMissingBlockBodies(highHash *externalapi.DomainHash) error {
 	hashes, err := flow.Domain().Consensus().GetMissingBlockBodyHashes(highHash)
 	if err != nil {
 		return err
@@ -521,17 +502,6 @@ func (flow *handleIBDFlow) syncMissingBlockBodies(highHash *externalapi.DomainHa
 		return nil
 	}
 
-	lowBlockHeader, err := flow.Domain().Consensus().GetBlockHeader(hashes[0])
-	if err != nil {
-		return err
-	}
-	highBlockHeader, err := flow.Domain().Consensus().GetBlockHeader(hashes[len(hashes)-1])
-	if err != nil {
-		return err
-	}
-	progressReporter := newIBDProgressReporter(lowBlockHeader.DAAScore(), highBlockHeader.DAAScore(), "blocks")
-	highestProcessedDAAScore := lowBlockHeader.DAAScore()
-
 	for offset := 0; offset < len(hashes); offset += ibdBatchSize {
 		var hashesToRequest []*externalapi.DomainHash
 		if offset+ibdBatchSize < len(hashes) {
@@ -546,7 +516,7 @@ func (flow *handleIBDFlow) syncMissingBlockBodies(highHash *externalapi.DomainHa
 		}
 
 		for _, expectedHash := range hashesToRequest {
-			message, err := flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
+			message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
 			if err != nil {
 				return err
 			}
@@ -563,12 +533,7 @@ func (flow *handleIBDFlow) syncMissingBlockBodies(highHash *externalapi.DomainHa
 				return protocolerrors.Errorf(true, "expected block %s but got %s", expectedHash, blockHash)
 			}
 
-			err = flow.banIfBlockIsHeaderOnly(block)
+			blockInsertionResult, err := flow.Domain().Consensus().ValidateAndInsertBlock(block)
-			if err != nil {
-				return err
-			}
-
-			virtualChangeSet, err := flow.Domain().Consensus().ValidateAndInsertBlock(block, false)
 			if err != nil {
 				if errors.Is(err, ruleerrors.ErrDuplicateBlock) {
 					log.Debugf("Skipping IBD Block %s as it has already been added to the DAG", blockHash)
@@ -576,62 +541,27 @@ func (flow *handleIBDFlow) syncMissingBlockBodies(highHash *externalapi.DomainHa
 				}
 				return protocolerrors.ConvertToBanningProtocolErrorIfRuleError(err, "invalid block %s", blockHash)
 			}
-			err = flow.OnNewBlock(block, virtualChangeSet)
+			err = flow.OnNewBlock(block, blockInsertionResult)
 			if err != nil {
 				return err
 			}
-
-			highestProcessedDAAScore = block.Header.DAAScore()
 		}
-
-		progressReporter.reportProgress(len(hashesToRequest), highestProcessedDAAScore)
-	}
-
-	return flow.resolveVirtual(highestProcessedDAAScore)
-}
-
-func (flow *handleIBDFlow) banIfBlockIsHeaderOnly(block *externalapi.DomainBlock) error {
-	if len(block.Transactions) == 0 {
-		return protocolerrors.Errorf(true, "sent header of %s block where expected block with body",
-			consensushashing.BlockHash(block))
 	}
 
 	return nil
 }
 
-func (flow *handleIBDFlow) resolveVirtual(estimatedVirtualDAAScoreTarget uint64) error {
+// dequeueIncomingMessageAndSkipInvs is a convenience method to be used during
-	virtualDAAScoreStart, err := flow.Domain().Consensus().GetVirtualDAAScore()
+// IBD. Inv messages are expected to arrive at any given moment, but should be
-	if err != nil {
+// ignored while we're in IBD
-		return err
+func (flow *handleRelayInvsFlow) dequeueIncomingMessageAndSkipInvs(timeout time.Duration) (appmessage.Message, error) {
-	}
+	for {
-
+		message, err := flow.incomingRoute.DequeueWithTimeout(timeout)
-	for i := 0; ; i++ {
-		if i%10 == 0 {
-			virtualDAAScore, err := flow.Domain().Consensus().GetVirtualDAAScore()
-			if err != nil {
-				return err
-			}
-			var percents int
-			if estimatedVirtualDAAScoreTarget-virtualDAAScoreStart <= 0 {
-				percents = 100
-			} else {
-				percents = int(float64(virtualDAAScore-virtualDAAScoreStart) / float64(estimatedVirtualDAAScoreTarget-virtualDAAScoreStart) * 100)
-			}
-			log.Infof("Resolving virtual. Estimated progress: %d%%", percents)
-		}
-		virtualChangeSet, isCompletelyResolved, err := flow.Domain().Consensus().ResolveVirtual()
 		if err != nil {
-			return err
+			return nil, err
 		}
-
+		if _, ok := message.(*appmessage.MsgInvRelayBlock); !ok {
-		err = flow.OnVirtualChange(virtualChangeSet)
+			return message, nil
-		if err != nil {
-			return err
-		}
-
-		if isCompletelyResolved {
-			log.Infof("Resolved virtual")
-			return nil
 		}
 	}
 }

app/protocol/flows/blockrelay/log.go

@@ -5,5 +5,5 @@ import (
 	"github.com/kaspanet/kaspad/util/panics"
 )
 
-var log = logger.RegisterSubSystem("PROT")
+var log, _ = logger.Get(logger.SubsystemTags.PROT)
 var spawn = panics.GoroutineWrapperFunc(log)

app/protocol/flows/blockrelay/send_virtual_selected_parent_inv.go

@@ -4,14 +4,12 @@ import (
 	"github.com/kaspanet/kaspad/app/appmessage"
 	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
 	"github.com/kaspanet/kaspad/domain"
-	"github.com/kaspanet/kaspad/infrastructure/config"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 )
 
 // SendVirtualSelectedParentInvContext is the interface for the context needed for the SendVirtualSelectedParentInv flow.
 type SendVirtualSelectedParentInvContext interface {
 	Domain() domain.Domain
-	Config() *config.Config
 }
 
 // SendVirtualSelectedParentInv sends a peer the selected parent hash of the virtual
@@ -23,11 +21,6 @@ func SendVirtualSelectedParentInv(context SendVirtualSelectedParentInvContext,
 		return err
 	}
 
-	if virtualSelectedParent.Equal(context.Config().NetParams().GenesisHash) {
-		log.Debugf("Skipping sending the virtual selected parent hash to peer %s because it's the genesis", peer)
-		return nil
-	}
-
 	log.Debugf("Sending virtual selected parent hash %s to peer %s", virtualSelectedParent, peer)
 
 	virtualSelectedParentInv := appmessage.NewMsgInvBlock(virtualSelectedParent)

app/protocol/flows/blockrelay/shared_requested_blocks.go

@@ -1,4 +1,4 @@
-package flowcontext
+package blockrelay
 
 import (
 	"sync"
@@ -13,15 +13,13 @@ type SharedRequestedBlocks struct {
 	sync.Mutex
 }
 
-// Remove removes a block from the set.
+func (s *SharedRequestedBlocks) remove(hash *externalapi.DomainHash) {
-func (s *SharedRequestedBlocks) Remove(hash *externalapi.DomainHash) {
 	s.Lock()
 	defer s.Unlock()
 	delete(s.blocks, *hash)
 }
 
-// RemoveSet removes a set of blocks from the set.
+func (s *SharedRequestedBlocks) removeSet(blockHashes map[externalapi.DomainHash]struct{}) {
-func (s *SharedRequestedBlocks) RemoveSet(blockHashes map[externalapi.DomainHash]struct{}) {
 	s.Lock()
 	defer s.Unlock()
 	for hash := range blockHashes {
@@ -29,8 +27,7 @@ func (s *SharedRequestedBlocks) RemoveSet(blockHashes map[externalapi.DomainHash
 	}
 }
 
-// AddIfNotExists adds a block to the set if it doesn't exist yet.
+func (s *SharedRequestedBlocks) addIfNotExists(hash *externalapi.DomainHash) (exists bool) {
-func (s *SharedRequestedBlocks) AddIfNotExists(hash *externalapi.DomainHash) (exists bool) {
 	s.Lock()
 	defer s.Unlock()
 	_, ok := s.blocks[*hash]

app/protocol/flows/handshake/handshake.go

@@ -28,7 +28,7 @@ type HandleHandshakeContext interface {
 	HandleError(err error, flowName string, isStopping *uint32, errChan chan<- error)
 }
 
-// HandleHandshake sets up the new_handshake protocol - It sends a version message and waits for an incoming
+// HandleHandshake sets up the handshake protocol - It sends a version message and waits for an incoming
 // version message, as well as a verack for the sent version
 func HandleHandshake(context HandleHandshakeContext, netConnection *netadapter.NetConnection,
 	receiveVersionRoute *routerpkg.Route, sendVersionRoute *routerpkg.Route, outgoingRoute *routerpkg.Route,
@@ -89,16 +89,13 @@ func HandleHandshake(context HandleHandshakeContext, netConnection *netadapter.N
 	}
 
 	if peerAddress != nil {
-		err := context.AddressManager().AddAddresses(peerAddress)
+		context.AddressManager().AddAddresses(peerAddress)
-		if err != nil {
-			return nil, err
-		}
 	}
 	return peer, nil
 }
 
 // Handshake is different from other flows, since in it should forward router.ErrRouteClosed to errChan
-// Therefore we implement a separate handleError for new_handshake
+// Therefore we implement a separate handleError for handshake
 func handleError(err error, flowName string, isStopping *uint32, errChan chan error) {
 	if errors.Is(err, routerpkg.ErrRouteClosed) {
 		if atomic.AddUint32(isStopping, 1) == 1 {
@@ -107,7 +104,7 @@ func handleError(err error, flowName string, isStopping *uint32, errChan chan er
 		return
 	}
 
-	if protocolErr := (protocolerrors.ProtocolError{}); errors.As(err, &protocolErr) {
+	if protocolErr := &(protocolerrors.ProtocolError{}); errors.As(err, &protocolErr) {
 		log.Errorf("Handshake protocol error from %s: %s", flowName, err)
 		if atomic.AddUint32(isStopping, 1) == 1 {
 			errChan <- err

app/protocol/flows/handshake/log.go

@@ -5,5 +5,5 @@ import (
 	"github.com/kaspanet/kaspad/util/panics"
 )
 
-var log = logger.RegisterSubSystem("PROT")
+var log, _ = logger.Get(logger.SubsystemTags.PROT)
 var spawn = panics.GoroutineWrapperFunc(log)

app/protocol/flows/handshake/receiveversion.go

@@ -7,7 +7,6 @@ import (
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
 	"github.com/kaspanet/kaspad/infrastructure/logger"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
-	"github.com/pkg/errors"
 )
 
 var (
@@ -18,9 +17,7 @@ var (
 
 	// minAcceptableProtocolVersion is the lowest protocol version that a
 	// connected peer may support.
-	minAcceptableProtocolVersion = uint32(4)
+	minAcceptableProtocolVersion = appmessage.ProtocolVersion
-
-	maxAcceptableProtocolVersion = uint32(4)
 )
 
 type receiveVersionFlow struct {
@@ -100,12 +97,7 @@ func (flow *receiveVersionFlow) start() (*appmessage.NetAddress, error) {
 		return nil, protocolerrors.New(false, "incompatible subnetworks")
 	}
 
-	if flow.Config().ProtocolVersion > maxAcceptableProtocolVersion {
+	flow.peer.UpdateFieldsFromMsgVersion(msgVersion)
-		return nil, errors.Errorf("%d is a non existing protocol version", flow.Config().ProtocolVersion)
-	}
-
-	maxProtocolVersion := flow.Config().ProtocolVersion
-	flow.peer.UpdateFieldsFromMsgVersion(msgVersion, maxProtocolVersion)
 	err = flow.outgoingRoute.Enqueue(appmessage.NewMsgVerAck())
 	if err != nil {
 		return nil, err

app/protocol/flows/handshake/sendversion.go

@@ -7,7 +7,6 @@ import (
 	"github.com/kaspanet/kaspad/infrastructure/logger"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 	"github.com/kaspanet/kaspad/version"
-	"github.com/pkg/errors"
 )
 
 var (
@@ -57,18 +56,15 @@ func (flow *sendVersionFlow) start() error {
 	// Version message.
 	localAddress := flow.AddressManager().BestLocalAddress(flow.peer.Connection().NetAddress())
 	subnetworkID := flow.Config().SubnetworkID
-	if flow.Config().ProtocolVersion < minAcceptableProtocolVersion {
-		return errors.Errorf("configured protocol version %d is obsolete", flow.Config().ProtocolVersion)
-	}
 	msg := appmessage.NewMsgVersion(localAddress, flow.NetAdapter().ID(),
-		flow.Config().ActiveNetParams.Name, subnetworkID, flow.Config().ProtocolVersion)
+		flow.Config().ActiveNetParams.Name, subnetworkID)
 	msg.AddUserAgent(userAgentName, userAgentVersion, flow.Config().UserAgentComments...)
 
 	// Advertise the services flag
 	msg.Services = defaultServices
 
 	// Advertise our max supported protocol version.
-	msg.ProtocolVersion = flow.Config().ProtocolVersion
+	msg.ProtocolVersion = appmessage.ProtocolVersion
 
 	// Advertise if inv messages for transactions are desired.
 	msg.DisableRelayTx = flow.Config().BlocksOnly

app/protocol/flows/ping/send.go

@@ -13,7 +13,6 @@ import (
 
 // SendPingsContext is the interface for the context needed for the SendPings flow.
 type SendPingsContext interface {
-	ShutdownChan() <-chan struct{}
 }
 
 type sendPingsFlow struct {
@@ -40,13 +39,7 @@ func (flow *sendPingsFlow) start() error {
 	ticker := time.NewTicker(pingInterval)
 	defer ticker.Stop()
 
-	for {
+	for range ticker.C {
-		select {
-		case <-flow.ShutdownChan():
-			return nil
-		case <-ticker.C:
-		}
-
 		nonce, err := random.Uint64()
 		if err != nil {
 			return err
@@ -69,4 +62,5 @@ func (flow *sendPingsFlow) start() error {
 		}
 		flow.peer.SetPingIdle()
 	}
+	return nil
 }

app/protocol/flows/ready/log.go

@@ -1,9 +0,0 @@
-package ready
-
-import (
-	"github.com/kaspanet/kaspad/infrastructure/logger"
-	"github.com/kaspanet/kaspad/util/panics"
-)
-
-var log = logger.RegisterSubSystem("PROT")
-var spawn = panics.GoroutineWrapperFunc(log)

app/protocol/flows/ready/ready.go

@@ -1,56 +0,0 @@
-package ready
-
-import (
-	"github.com/kaspanet/kaspad/app/appmessage"
-	"github.com/kaspanet/kaspad/app/protocol/common"
-	"sync/atomic"
-
-	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
-	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
-	routerpkg "github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
-	"github.com/pkg/errors"
-)
-
-// HandleReady notify the other peer that peer is ready for messages, and wait for the other peer
-// to send a ready message before start running the flows.
-func HandleReady(incomingRoute *routerpkg.Route, outgoingRoute *routerpkg.Route,
-	peer *peerpkg.Peer,
-) error {
-
-	log.Debugf("Sending ready message to %s", peer)
-
-	isStopping := uint32(0)
-	err := outgoingRoute.Enqueue(appmessage.NewMsgReady())
-	if err != nil {
-		return handleError(err, "HandleReady", &isStopping)
-	}
-
-	_, err = incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
-	if err != nil {
-		return handleError(err, "HandleReady", &isStopping)
-	}
-
-	log.Debugf("Got ready message from %s", peer)
-
-	return nil
-}
-
-// Ready is different from other flows, since in it should forward router.ErrRouteClosed to errChan
-// Therefore we implement a separate handleError for 'ready'
-func handleError(err error, flowName string, isStopping *uint32) error {
-	if errors.Is(err, routerpkg.ErrRouteClosed) {
-		if atomic.AddUint32(isStopping, 1) == 1 {
-			return err
-		}
-		return nil
-	}
-
-	if protocolErr := (protocolerrors.ProtocolError{}); errors.As(err, &protocolErr) {
-		log.Errorf("Ready protocol error from %s: %s", flowName, err)
-		if atomic.AddUint32(isStopping, 1) == 1 {
-			return err
-		}
-		return nil
-	}
-	panic(err)
-}

app/protocol/flows/rejects/handle_rejects.go

@@ -33,5 +33,10 @@ func (flow *handleRejectsFlow) start() error {
 	}
 	rejectMessage := message.(*appmessage.MsgReject)
 
+	const maxReasonLength = 255
+	if len(rejectMessage.Reason) > maxReasonLength {
+		return protocolerrors.Errorf(false, "got reject message longer than %d", maxReasonLength)
+	}
+
 	return protocolerrors.Errorf(false, "got reject message: `%s`", rejectMessage.Reason)
 }

app/protocol/flows/testing/common_test.go

@@ -1,15 +1,14 @@
 package testing
 
 import (
-	"strings"
-	"testing"
-
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
 	"github.com/pkg/errors"
+	"strings"
+	"testing"
 )
 
 func checkFlowError(t *testing.T, err error, isProtocolError bool, shouldBan bool, contains string) {
-	pErr := protocolerrors.ProtocolError{}
+	pErr := &protocolerrors.ProtocolError{}
 	if errors.As(err, &pErr) != isProtocolError {
 		t.Fatalf("Unexepcted error %+v", err)
 	}

app/protocol/flows/testing/receiveaddresses_test.go

@@ -1,16 +1,15 @@
 package testing
 
 import (
-	"github.com/kaspanet/kaspad/app/protocol/flows/v4/addressexchange"
-	"testing"
-	"time"
-
 	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/app/protocol/flows/addressexchange"
 	peerpkg "github.com/kaspanet/kaspad/app/protocol/peer"
-	"github.com/kaspanet/kaspad/domain/consensus"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/testutils"
+	"github.com/kaspanet/kaspad/domain/dagconfig"
 	"github.com/kaspanet/kaspad/infrastructure/network/addressmanager"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
+	"testing"
+	"time"
 )
 
 type fakeReceiveAddressesContext struct{}
@@ -20,9 +19,9 @@ func (f fakeReceiveAddressesContext) AddressManager() *addressmanager.AddressMan
 }
 
 func TestReceiveAddressesErrors(t *testing.T) {
-	testutils.ForAllNets(t, true, func(t *testing.T, consensusConfig *consensus.Config) {
+	testutils.ForAllNets(t, true, func(t *testing.T, params *dagconfig.Params) {
-		incomingRoute := router.NewRoute("incoming")
+		incomingRoute := router.NewRoute()
-		outgoingRoute := router.NewRoute("outgoing")
+		outgoingRoute := router.NewRoute()
 		peer := peerpkg.New(nil)
 		errChan := make(chan error)
 		go func() {

app/protocol/flows/transactionrelay/handle_relayed_transactions.go

@@ -3,7 +3,6 @@ package transactionrelay
 import (
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol/common"
-	"github.com/kaspanet/kaspad/app/protocol/flowcontext"
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
 	"github.com/kaspanet/kaspad/domain"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
@@ -19,10 +18,9 @@ import (
 type TransactionsRelayContext interface {
 	NetAdapter() *netadapter.NetAdapter
 	Domain() domain.Domain
-	SharedRequestedTransactions() *flowcontext.SharedRequestedTransactions
+	SharedRequestedTransactions() *SharedRequestedTransactions
+	Broadcast(message appmessage.Message) error
 	OnTransactionAddedToMempool()
-	EnqueueTransactionIDsForPropagation(transactionIDs []*externalapi.DomainTransactionID) error
-	IsIBDRunning() bool
 }
 
 type handleRelayedTransactionsFlow struct {
@@ -50,10 +48,6 @@ func (flow *handleRelayedTransactionsFlow) start() error {
 			return err
 		}
 
-		if flow.IsIBDRunning() {
-			continue
-		}
-
 		requestedIDs, err := flow.requestInvTransactions(inv)
 		if err != nil {
 			return err
@@ -74,7 +68,7 @@ func (flow *handleRelayedTransactionsFlow) requestInvTransactions(
 		if flow.isKnownTransaction(txID) {
 			continue
 		}
-		exists := flow.SharedRequestedTransactions().AddIfNotExists(txID)
+		exists := flow.SharedRequestedTransactions().addIfNotExists(txID)
 		if exists {
 			continue
 		}
@@ -88,7 +82,7 @@ func (flow *handleRelayedTransactionsFlow) requestInvTransactions(
 	msgGetTransactions := appmessage.NewMsgRequestTransactions(idsToRequest)
 	err = flow.outgoingRoute.Enqueue(msgGetTransactions)
 	if err != nil {
-		flow.SharedRequestedTransactions().RemoveMany(idsToRequest)
+		flow.SharedRequestedTransactions().removeMany(idsToRequest)
 		return nil, err
 	}
 	return idsToRequest, nil
@@ -125,7 +119,8 @@ func (flow *handleRelayedTransactionsFlow) readInv() (*appmessage.MsgInvTransact
 }
 
 func (flow *handleRelayedTransactionsFlow) broadcastAcceptedTransactions(acceptedTxIDs []*externalapi.DomainTransactionID) error {
-	return flow.EnqueueTransactionIDsForPropagation(acceptedTxIDs)
+	inv := appmessage.NewMsgInvTransaction(acceptedTxIDs)
+	return flow.Broadcast(inv)
 }
 
 // readMsgTxOrNotFound returns the next msgTx or msgTransactionNotFound in incomingRoute,
@@ -157,7 +152,7 @@ func (flow *handleRelayedTransactionsFlow) readMsgTxOrNotFound() (
 func (flow *handleRelayedTransactionsFlow) receiveTransactions(requestedTransactions []*externalapi.DomainTransactionID) error {
 	// In case the function returns earlier than expected, we want to make sure sharedRequestedTransactions is
 	// clean from any pending transactions.
-	defer flow.SharedRequestedTransactions().RemoveMany(requestedTransactions)
+	defer flow.SharedRequestedTransactions().removeMany(requestedTransactions)
 	for _, expectedID := range requestedTransactions {
 		msgTx, msgTxNotFound, err := flow.readMsgTxOrNotFound()
 		if err != nil {
@@ -178,18 +173,17 @@ func (flow *handleRelayedTransactionsFlow) receiveTransactions(requestedTransact
 				expectedID, txID)
 		}
 
-		acceptedTransactions, err :=
+		err = flow.Domain().MiningManager().ValidateAndInsertTransaction(tx, true)
-			flow.Domain().MiningManager().ValidateAndInsertTransaction(tx, false, true)
 		if err != nil {
 			ruleErr := &mempool.RuleError{}
 			if !errors.As(err, ruleErr) {
 				return errors.Wrapf(err, "failed to process transaction %s", txID)
 			}
 
-			shouldBan := false
+			shouldBan := true
 			if txRuleErr := (&mempool.TxRuleError{}); errors.As(ruleErr.Err, txRuleErr) {
-				if txRuleErr.RejectCode == mempool.RejectInvalid {
+				if txRuleErr.RejectCode != mempool.RejectInvalid {
-					shouldBan = true
+					shouldBan = false
 				}
 			}
 
@@ -197,9 +191,9 @@ func (flow *handleRelayedTransactionsFlow) receiveTransactions(requestedTransact
 				continue
 			}
 
-			return protocolerrors.Errorf(true, "rejected transaction %s: %s", txID, ruleErr)
+			return protocolerrors.Errorf(true, "rejected transaction %s", txID)
 		}
-		err = flow.broadcastAcceptedTransactions(consensushashing.TransactionIDs(acceptedTransactions))
+		err = flow.broadcastAcceptedTransactions([]*externalapi.DomainTransactionID{txID})
 		if err != nil {
 			return err
 		}

app/protocol/flows/transactionrelay/shared_requested_transactions.go

@@ -1,4 +1,4 @@
-package flowcontext
+package transactionrelay
 
 import (
 	"sync"
@@ -13,15 +13,13 @@ type SharedRequestedTransactions struct {
 	sync.Mutex
 }
 
-// Remove removes a transaction from the set.
+func (s *SharedRequestedTransactions) remove(txID *externalapi.DomainTransactionID) {
-func (s *SharedRequestedTransactions) Remove(txID *externalapi.DomainTransactionID) {
 	s.Lock()
 	defer s.Unlock()
 	delete(s.transactions, *txID)
 }
 
-// RemoveMany removes a set of transactions from the set.
+func (s *SharedRequestedTransactions) removeMany(txIDs []*externalapi.DomainTransactionID) {
-func (s *SharedRequestedTransactions) RemoveMany(txIDs []*externalapi.DomainTransactionID) {
 	s.Lock()
 	defer s.Unlock()
 	for _, txID := range txIDs {
@@ -29,8 +27,7 @@ func (s *SharedRequestedTransactions) RemoveMany(txIDs []*externalapi.DomainTran
 	}
 }
 
-// AddIfNotExists adds a transaction to the set if it doesn't exist yet.
+func (s *SharedRequestedTransactions) addIfNotExists(txID *externalapi.DomainTransactionID) (exists bool) {
-func (s *SharedRequestedTransactions) AddIfNotExists(txID *externalapi.DomainTransactionID) (exists bool) {
 	s.Lock()
 	defer s.Unlock()
 	_, ok := s.transactions[*txID]