Bump version to 0.12.22 (#2307)

* Fix block verbosedata population from skipping transaction verbosedata population when BlockInfo errorenously reports block as Header only, but domainBlock is still fount with GetBlockEvenIfHeaderOnly.

* Update app/rpc/rpccontext/verbosedata.go

---------

Co-authored-by: Toni Lukkaroinen <toni.lukkaroinen@hoosat.fi>
Co-authored-by: Michael Sutton <mikisiton2@gmail.com>
Co-authored-by: Ori Newman <orinewman1@gmail.com>

.github/workflows/SetPageFileSize.ps1

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

.github/workflows/deploy.yaml

@@ -0,0 +1,69 @@
+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, ${{ matrix.os }}
+    steps:
+      - name: Fix CRLF on Windows
+        if: runner.os == 'Windows'
+        run: git config --global core.autocrlf false
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.21
+
+      - name: Build on Linux
+        if: runner.os == 'Linux'
+        # `-extldflags=-static` - means static link everything,
+        # `-tags netgo,osusergo` means use pure go replacements for "os/user" and "net"
+        # `-s -w` strips the binary to produce smaller size binaries
+        run: |
+          go build -v -ldflags="-s -w -extldflags=-static" -tags netgo,osusergo -o ./bin/ ./cmd/...
+          archive="bin/kaspad-${{ 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

@@ -1,69 +0,0 @@
-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

@@ -1,4 +1,4 @@
-name: Go-Race
+name: Race
 
 on:
   schedule:
@@ -7,21 +7,22 @@ on:
 
 jobs:
   race_test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
-        branch: [ master, latest ]
+        branch: [master, latest]
     name: Race detection on ${{ matrix.branch }}
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
-      - name: Set up Go 1.x
-        uses: actions/setup-go@v2
+      - name: Setup Go
+        uses: actions/setup-go@v5
         with:
-          go-version: 1.15
+          go-version: 1.23
 
       - name: Set scheduled branch name
         shell: bash
@@ -45,4 +46,4 @@ jobs:
         run: |
           git checkout "${{ env.run_on }}"
           git status
-          go test -race ./...
+          go test -timeout 20m -race ./...

.github/workflows/tests.yaml

@@ -0,0 +1,92 @@
+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@v4
+
+      # 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@v5
+        with:
+          go-version: 1.23
+
+      # Source: https://github.com/actions/cache/blob/main/examples.md#go---modules
+      - name: Go Cache
+        uses: actions/cache@v4
+        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@v5
+        with:
+          go-version: 1.23
+
+      - name: Checkout
+        uses: actions/checkout@v4
+        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@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.23
+
+      - 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)

.gitignore

@@ -53,6 +53,7 @@ _testmain.go
 debug
 debug.test
 __debug_bin
+*__debug_*
 
 # CI
 version.txt

CODE_OF_CONDUCT.md

@@ -0,0 +1,43 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project maintainers on this [Google form][gform]. The project maintainers will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project maintainers are obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[gform]: https://forms.gle/dnKXMJL7VxdUjt3x5
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/

CONTRIBUTING.md

@@ -12,8 +12,7 @@ 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 of the target version. The development branch format is
-as follows: `vx.y.z-dev`, for example: `v0.8.5-dev`.
+Any pull request should be opened against the development branch `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

@@ -1,16 +1,15 @@
+# DEPRECATED
 
-Kaspad
-====
-Warning: This is pre-alpha software. There's no guarantee anything works.
-====
+The full node reference implementation was [rewritten in Rust](https://github.com/kaspanet/rusty-kaspa), as a result, the Go implementation is now deprecated.
+
+PLEASE NOTE: Any pull requests or issues that will be opened in this repository will be closed without treatment, except for issues or pull requests related to the kaspawallet, which remains maintained. In any other case, please use the [Rust implementation](https://github.com/kaspanet/rusty-kaspa) instead.
+
+# Kaspad
 
 [![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 a pre-Alpha state.
-Some things still don't work and APIs are far from finalized. The code is provided for reference only.
+Kaspad was the reference full node Kaspa implementation written in Go (golang).
 
 ## What is kaspa
 
@@ -18,7 +17,7 @@ Kaspa is an attempt at a proof-of-work cryptocurrency with instant confirmations
 
 ## Requirements
 
-Go 1.15 or later.
+Go 1.23 or later.
 
 ## Installation
 
@@ -45,7 +44,6 @@ $ go install . ./cmd/...
   not already add the bin directory to your system path during Go installation,
   you are encouraged to do so now.
 
-
 ## Getting Started
 
 Kaspad has several configuration options available to tweak how it runs, but all
@@ -56,13 +54,16 @@ $ kaspad
 ```
 
 ## Discord
-Join our discord server using the following link: https://discord.gg/WmGhhzk
+
+Join our discord server using the following link: https://discord.gg/YNYnNN5Pf2
 
 ## 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

@@ -7,22 +7,23 @@ 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/os/signal"
-	"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/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"
 )
 
-const leveldbCacheSizeMiB = 256
+const (
+	leveldbCacheSizeMiB = 256
+	defaultDataDirname  = "datadir2"
+)
 
 var desiredLimits = &limits.DesiredLimits{
 	FileLimitWant: 2048,
@@ -51,6 +52,7 @@ func StartApp() error {
 		fmt.Fprintln(os.Stderr, err)
 		return err
 	}
+	defer logger.BackendLog.Close()
 	defer panics.HandlePanic(log, "MAIN", nil)
 
 	app := &kaspadApp{cfg: cfg}
@@ -85,12 +87,7 @@ func (app *kaspadApp) main(startedChan chan<- struct{}) error {
 	if app.cfg.Profile != "" {
 		profiling.Start(app.cfg.Profile, log)
 	}
-
-	// Perform upgrades to kaspad as new versions require it.
-	if err := doUpgrades(); err != nil {
-		log.Error(err)
-		return err
-	}
+	profiling.TrackHeap(app.cfg.AppDir, log)
 
 	// Return now if an interrupt signal was triggered.
 	if signal.InterruptRequested(interrupt) {
@@ -108,7 +105,7 @@ func (app *kaspadApp) main(startedChan chan<- struct{}) error {
 	// Open the database
 	databaseContext, err := openDB(app.cfg)
 	if err != nil {
-		log.Error(err)
+		log.Errorf("Loading database failed: %+v", err)
 		return err
 	}
 
@@ -164,15 +161,9 @@ 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.DataDir, "db")
+	return filepath.Join(cfg.AppDir, defaultDataDirname)
 }
 
 func removeDatabase(cfg *config.Config) error {
@@ -182,6 +173,17 @@ 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)
-	return ldb.NewLevelDB(dbPath, leveldbCacheSizeMiB)
+	db, err := ldb.NewLevelDB(dbPath, leveldbCacheSizeMiB)
+	if err != nil {
+		return nil, err
+	}
+
+	return db, nil
 }

app/appmessage/doc.go

@@ -6,7 +6,7 @@ supported kaspa messages to and from the appmessage. This package does not deal
 with the specifics of message handling such as what to do when a message is
 received. This provides the caller with a high level of flexibility.
 
-Kaspa Message Overview
+# Kaspa Message Overview
 
 The kaspa protocol consists of exchanging messages between peers. Each
 message is preceded by a header which identifies information about it such as
@@ -22,7 +22,7 @@ messages, all of the details of marshalling and unmarshalling to and from the
 appmessage using kaspa encoding are handled so the caller doesn't have to concern
 themselves with the specifics.
 
-Message Interaction
+# Message Interaction
 
 The following provides a quick summary of how the kaspa messages are intended
 to interact with one another. As stated above, these interactions are not
@@ -45,13 +45,13 @@ interactions in no particular order.
 	                                        notfound message (MsgNotFound)
 	ping message (MsgPing)                  pong message (MsgPong)
 
-Common Parameters
+# Common Parameters
 
 There are several common parameters that arise when using this package to read
 and write kaspa messages. The following sections provide a quick overview of
 these parameters so the next sections can build on them.
 
-Protocol Version
+# Protocol Version
 
 The protocol version should be negotiated with the remote peer at a higher
 level than this package via the version (MsgVersion) message exchange, however,
@@ -60,18 +60,18 @@ latest protocol version this package supports and is typically the value to use
 for all outbound connections before a potentially lower protocol version is
 negotiated.
 
-Kaspa Network
+# Kaspa Network
 
 The kaspa network is a magic number which is used to identify the start of a
 message and which kaspa network the message applies to. This package provides
 the following constants:
 
-    appmessage.Mainnet
-    appmessage.Testnet (Test network)
-    appmessage.Simnet  (Simulation test network)
-    appmessage.Devnet  (Development network)
+	appmessage.Mainnet
+	appmessage.Testnet (Test network)
+	appmessage.Simnet  (Simulation test network)
+	appmessage.Devnet  (Development network)
 
-Determining Message Type
+# Determining Message Type
 
 As discussed in the kaspa message overview section, this package reads
 and writes kaspa messages using a generic interface named Message. In
@@ -89,7 +89,7 @@ switch or type assertion. An example of a type switch follows:
 		fmt.Printf("Number of tx in block: %d", msg.Header.TxnCount)
 	}
 
-Reading Messages
+# Reading Messages
 
 In order to unmarshall kaspa messages from the appmessage, use the ReadMessage
 function. It accepts any io.Reader, but typically this will be a net.Conn to
@@ -104,7 +104,7 @@ a remote node running a kaspa peer. Example syntax is:
 		// Log and handle the error
 	}
 
-Writing Messages
+# Writing Messages
 
 In order to marshall kaspa messages to the appmessage, use the WriteMessage
 function. It accepts any io.Writer, but typically this will be a net.Conn to
@@ -122,7 +122,7 @@ from a remote peer is:
 		// Log and handle the error
 	}
 
-Errors
+# Errors
 
 Errors returned by this package are either the raw errors provided by underlying
 calls to read/write from streams such as io.EOF, io.ErrUnexpectedEOF, and

app/appmessage/domainconverters.go

@@ -2,7 +2,12 @@ package appmessage
 
 import (
 	"encoding/hex"
+	"math/big"
+
+	"github.com/pkg/errors"
+
 	"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"
@@ -27,13 +32,17 @@ func DomainBlockToMsgBlock(domainBlock *externalapi.DomainBlock) *MsgBlock {
 func DomainBlockHeaderToBlockHeader(domainBlockHeader externalapi.BlockHeader) *MsgBlockHeader {
 	return &MsgBlockHeader{
 		Version:              domainBlockHeader.Version(),
-		ParentHashes:         domainBlockHeader.ParentHashes(),
+		Parents:              domainBlockHeader.Parents(),
 		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(),
 	}
 }
 
@@ -54,13 +63,17 @@ func MsgBlockToDomainBlock(msgBlock *MsgBlock) *externalapi.DomainBlock {
 func BlockHeaderToDomainBlockHeader(blockHeader *MsgBlockHeader) externalapi.BlockHeader {
 	return blockheader.NewImmutableBlockHeader(
 		blockHeader.Version,
-		blockHeader.ParentHashes,
+		blockHeader.Parents,
 		blockHeader.HashMerkleRoot,
 		blockHeader.AcceptedIDMerkleRoot,
 		blockHeader.UTXOCommitment,
 		blockHeader.Timestamp.UnixMilliseconds(),
 		blockHeader.Bits,
 		blockHeader.Nonce,
+		blockHeader.DAAScore,
+		blockHeader.BlueScore,
+		blockHeader.BlueWork,
+		blockHeader.PruningPoint,
 	)
 }
 
@@ -83,7 +96,6 @@ func DomainTransactionToMsgTx(domainTransaction *externalapi.DomainTransaction)
 		LockTime:     domainTransaction.LockTime,
 		SubnetworkID: domainTransaction.SubnetworkID,
 		Gas:          domainTransaction.Gas,
-		PayloadHash:  domainTransaction.PayloadHash,
 		Payload:      domainTransaction.Payload,
 	}
 }
@@ -100,6 +112,7 @@ func domainTransactionInputToTxIn(domainTransactionInput *externalapi.DomainTran
 		PreviousOutpoint: *domainOutpointToOutpoint(domainTransactionInput.PreviousOutpoint),
 		SignatureScript:  domainTransactionInput.SignatureScript,
 		Sequence:         domainTransactionInput.Sequence,
+		SigOpCount:       domainTransactionInput.SigOpCount,
 	}
 }
 
@@ -133,7 +146,6 @@ func MsgTxToDomainTransaction(msgTx *MsgTx) *externalapi.DomainTransaction {
 		LockTime:     msgTx.LockTime,
 		SubnetworkID: msgTx.SubnetworkID,
 		Gas:          msgTx.Gas,
-		PayloadHash:  msgTx.PayloadHash,
 		Payload:      payload,
 	}
 }
@@ -149,6 +161,7 @@ func txInToDomainTransactionInput(txIn *TxIn) *externalapi.DomainTransactionInpu
 	return &externalapi.DomainTransactionInput{
 		PreviousOutpoint: *outpointToDomainOutpoint(&txIn.PreviousOutpoint), //TODO
 		SignatureScript:  txIn.SignatureScript,
+		SigOpCount:       txIn.SigOpCount,
 		Sequence:         txIn.Sequence,
 	}
 }
@@ -164,18 +177,10 @@ 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 {
-		transactionIDBytes, err := hex.DecodeString(input.PreviousOutpoint.TransactionID)
+		previousOutpoint, err := RPCOutpointToDomainOutpoint(input.PreviousOutpoint)
 		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
@@ -184,6 +189,7 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 			PreviousOutpoint: *previousOutpoint,
 			SignatureScript:  signatureScript,
 			Sequence:         input.Sequence,
+			SigOpCount:       input.SigOpCount,
 		}
 	}
 	outputs := make([]*externalapi.DomainTransactionOutput, len(rpcTransaction.Outputs))
@@ -198,19 +204,7 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 		}
 	}
 
-	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)
+	subnetworkID, err := subnetworks.FromString(rpcTransaction.SubnetworkID)
 	if err != nil {
 		return nil, err
 	}
@@ -220,17 +214,47 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 	}
 
 	return &externalapi.DomainTransaction{
-		Version:      rpcTransaction.Version,
-		Inputs:       inputs,
-		Outputs:      outputs,
-		LockTime:     rpcTransaction.LockTime,
-		SubnetworkID: *subnetworkID,
-		Gas:          rpcTransaction.LockTime,
-		PayloadHash:  *payloadHash,
-		Payload:      payload,
+		Version:        rpcTransaction.Version,
+		Inputs:         inputs,
+		Outputs:        outputs,
+		LockTime:       rpcTransaction.LockTime,
+		SubnetworkID:   *subnetworkID,
+		Gas:            rpcTransaction.Gas,
+		MassCommitment: rpcTransaction.Mass,
+		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))
@@ -245,6 +269,7 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 			PreviousOutpoint: previousOutpoint,
 			SignatureScript:  signatureScript,
 			Sequence:         input.Sequence,
+			SigOpCount:       input.SigOpCount,
 		}
 	}
 	outputs := make([]*RPCTransactionOutput, len(transaction.Outputs))
@@ -255,8 +280,7 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 			ScriptPublicKey: &RPCScriptPublicKey{Script: scriptPublicKey, Version: output.ScriptPublicKey.Version},
 		}
 	}
-	subnetworkID := hex.EncodeToString(transaction.SubnetworkID[:])
-	payloadHash := transaction.PayloadHash.String()
+	subnetworkID := transaction.SubnetworkID.String()
 	payload := hex.EncodeToString(transaction.Payload)
 	return &RPCTransaction{
 		Version:      transaction.Version,
@@ -264,8 +288,8 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 		Outputs:      outputs,
 		LockTime:     transaction.LockTime,
 		SubnetworkID: subnetworkID,
-		Gas:          transaction.LockTime,
-		PayloadHash:  payloadHash,
+		Gas:          transaction.Gas,
+		Mass:         transaction.MassCommitment,
 		Payload:      payload,
 	}
 }
@@ -277,22 +301,27 @@ func OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs(
 
 	domainOutpointAndUTXOEntryPairs := make([]*externalapi.OutpointAndUTXOEntryPair, len(outpointAndUTXOEntryPairs))
 	for i, outpointAndUTXOEntryPair := range outpointAndUTXOEntryPairs {
-		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,
-			),
-		}
+		domainOutpointAndUTXOEntryPairs[i] = outpointAndUTXOEntryPairToDomainOutpointAndUTXOEntryPair(outpointAndUTXOEntryPair)
 	}
 	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(
@@ -309,9 +338,267 @@ func DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs(
 				Amount:          outpointAndUTXOEntryPair.UTXOEntry.Amount(),
 				ScriptPublicKey: outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey(),
 				IsCoinbase:      outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase(),
-				BlockBlueScore:  outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore(),
+				BlockDAAScore:   outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore(),
 			},
 		}
 	}
 	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

@@ -38,6 +38,10 @@ 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

@@ -45,24 +45,34 @@ const (
 	CmdRequestRelayBlocks
 	CmdInvTransaction
 	CmdRequestTransactions
-	CmdIBDBlock
 	CmdDoneHeaders
 	CmdTransactionNotFound
 	CmdReject
-	CmdHeader
 	CmdRequestNextHeaders
-	CmdRequestPruningPointUTXOSetAndBlock
+	CmdRequestPruningPointUTXOSet
 	CmdPruningPointUTXOSetChunk
-	CmdRequestIBDBlocks
 	CmdUnexpectedPruningPoint
-	CmdRequestPruningPointHash
-	CmdPruningPointHash
 	CmdIBDBlockLocator
 	CmdIBDBlockLocatorHighestHash
 	CmdIBDBlockLocatorHighestHashNotFound
 	CmdBlockHeaders
 	CmdRequestNextPruningPointUTXOSetChunk
 	CmdDonePruningPointUTXOSetChunks
+	CmdBlockWithTrustedData
+	CmdDoneBlocksWithTrustedData
+	CmdRequestPruningPointAndItsAnticone
+	CmdIBDBlock
+	CmdRequestIBDBlocks
+	CmdPruningPoints
+	CmdRequestPruningPointProof
+	CmdPruningPointProof
+	CmdReady
+	CmdTrustedData
+	CmdBlockWithTrustedDataV4
+	CmdRequestNextPruningPointAndItsAnticoneBlocks
+	CmdRequestIBDChainBlockLocator
+	CmdIBDChainBlockLocator
+	CmdRequestAnticone
 
 	// rpc
 	CmdGetCurrentNetworkRequestMessage
@@ -121,6 +131,8 @@ const (
 	CmdStopNotifyingUTXOsChangedResponseMessage
 	CmdGetUTXOsByAddressesRequestMessage
 	CmdGetUTXOsByAddressesResponseMessage
+	CmdGetBalanceByAddressRequestMessage
+	CmdGetBalanceByAddressResponseMessage
 	CmdGetVirtualSelectedParentBlueScoreRequestMessage
 	CmdGetVirtualSelectedParentBlueScoreResponseMessage
 	CmdNotifyVirtualSelectedParentBlueScoreChangedRequestMessage
@@ -132,6 +144,29 @@ const (
 	CmdUnbanResponseMessage
 	CmdGetInfoRequestMessage
 	CmdGetInfoResponseMessage
+	CmdNotifyPruningPointUTXOSetOverrideRequestMessage
+	CmdNotifyPruningPointUTXOSetOverrideResponseMessage
+	CmdPruningPointUTXOSetOverrideNotificationMessage
+	CmdStopNotifyingPruningPointUTXOSetOverrideRequestMessage
+	CmdStopNotifyingPruningPointUTXOSetOverrideResponseMessage
+	CmdEstimateNetworkHashesPerSecondRequestMessage
+	CmdEstimateNetworkHashesPerSecondResponseMessage
+	CmdNotifyVirtualDaaScoreChangedRequestMessage
+	CmdNotifyVirtualDaaScoreChangedResponseMessage
+	CmdVirtualDaaScoreChangedNotificationMessage
+	CmdGetBalancesByAddressesRequestMessage
+	CmdGetBalancesByAddressesResponseMessage
+	CmdNotifyNewBlockTemplateRequestMessage
+	CmdNotifyNewBlockTemplateResponseMessage
+	CmdNewBlockTemplateNotificationMessage
+	CmdGetMempoolEntriesByAddressesRequestMessage
+	CmdGetMempoolEntriesByAddressesResponseMessage
+	CmdGetCoinSupplyRequestMessage
+	CmdGetCoinSupplyResponseMessage
+	CmdGetFeeEstimateRequestMessage
+	CmdGetFeeEstimateResponseMessage
+	CmdSubmitTransactionReplacementRequestMessage
+	CmdSubmitTransactionReplacementResponseMessage
 )
 
 // ProtocolMessageCommandToString maps all MessageCommands to their string representation
@@ -140,7 +175,7 @@ var ProtocolMessageCommandToString = map[MessageCommand]string{
 	CmdVerAck:                              "VerAck",
 	CmdRequestAddresses:                    "RequestAddresses",
 	CmdAddresses:                           "Addresses",
-	CmdRequestHeaders:                      "RequestHeaders",
+	CmdRequestHeaders:                      "CmdRequestHeaders",
 	CmdBlock:                               "Block",
 	CmdTx:                                  "Tx",
 	CmdPing:                                "Ping",
@@ -151,24 +186,34 @@ var ProtocolMessageCommandToString = map[MessageCommand]string{
 	CmdRequestRelayBlocks:                  "RequestRelayBlocks",
 	CmdInvTransaction:                      "InvTransaction",
 	CmdRequestTransactions:                 "RequestTransactions",
-	CmdIBDBlock:                            "IBDBlock",
 	CmdDoneHeaders:                         "DoneHeaders",
 	CmdTransactionNotFound:                 "TransactionNotFound",
 	CmdReject:                              "Reject",
-	CmdHeader:                              "Header",
 	CmdRequestNextHeaders:                  "RequestNextHeaders",
-	CmdRequestPruningPointUTXOSetAndBlock:  "RequestPruningPointUTXOSetAndBlock",
+	CmdRequestPruningPointUTXOSet:          "RequestPruningPointUTXOSet",
 	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",
+	CmdRequestNextPruningPointAndItsAnticoneBlocks: "RequestNextPruningPointAndItsAnticoneBlocks",
+	CmdRequestIBDChainBlockLocator:                 "RequestIBDChainBlockLocator",
+	CmdIBDChainBlockLocator:                        "IBDChainBlockLocator",
+	CmdRequestAnticone:                             "RequestAnticone",
 }
 
 // RPCMessageCommandToString maps all MessageCommands to their string representation
@@ -227,6 +272,8 @@ var RPCMessageCommandToString = map[MessageCommand]string{
 	CmdStopNotifyingUTXOsChangedResponseMessage:                   "StopNotifyingUTXOsChangedResponse",
 	CmdGetUTXOsByAddressesRequestMessage:                          "GetUTXOsByAddressesRequest",
 	CmdGetUTXOsByAddressesResponseMessage:                         "GetUTXOsByAddressesResponse",
+	CmdGetBalanceByAddressRequestMessage:                          "GetBalanceByAddressRequest",
+	CmdGetBalanceByAddressResponseMessage:                         "GetBalancesByAddressResponse",
 	CmdGetVirtualSelectedParentBlueScoreRequestMessage:            "GetVirtualSelectedParentBlueScoreRequest",
 	CmdGetVirtualSelectedParentBlueScoreResponseMessage:           "GetVirtualSelectedParentBlueScoreResponse",
 	CmdNotifyVirtualSelectedParentBlueScoreChangedRequestMessage:  "NotifyVirtualSelectedParentBlueScoreChangedRequest",
@@ -236,8 +283,31 @@ var RPCMessageCommandToString = map[MessageCommand]string{
 	CmdBanResponseMessage:                                         "BanResponse",
 	CmdUnbanRequestMessage:                                        "UnbanRequest",
 	CmdUnbanResponseMessage:                                       "UnbanResponse",
-	CmdGetInfoRequestMessage:                                      "GetInfoRequestMessage",
-	CmdGetInfoResponseMessage:                                     "GeInfoResponseMessage",
+	CmdGetInfoRequestMessage:                                      "GetInfoRequest",
+	CmdGetInfoResponseMessage:                                     "GeInfoResponse",
+	CmdNotifyPruningPointUTXOSetOverrideRequestMessage:            "NotifyPruningPointUTXOSetOverrideRequest",
+	CmdNotifyPruningPointUTXOSetOverrideResponseMessage:           "NotifyPruningPointUTXOSetOverrideResponse",
+	CmdPruningPointUTXOSetOverrideNotificationMessage:             "PruningPointUTXOSetOverrideNotification",
+	CmdStopNotifyingPruningPointUTXOSetOverrideRequestMessage:     "StopNotifyingPruningPointUTXOSetOverrideRequest",
+	CmdStopNotifyingPruningPointUTXOSetOverrideResponseMessage:    "StopNotifyingPruningPointUTXOSetOverrideResponse",
+	CmdEstimateNetworkHashesPerSecondRequestMessage:               "EstimateNetworkHashesPerSecondRequest",
+	CmdEstimateNetworkHashesPerSecondResponseMessage:              "EstimateNetworkHashesPerSecondResponse",
+	CmdNotifyVirtualDaaScoreChangedRequestMessage:                 "NotifyVirtualDaaScoreChangedRequest",
+	CmdNotifyVirtualDaaScoreChangedResponseMessage:                "NotifyVirtualDaaScoreChangedResponse",
+	CmdVirtualDaaScoreChangedNotificationMessage:                  "VirtualDaaScoreChangedNotification",
+	CmdGetBalancesByAddressesRequestMessage:                       "GetBalancesByAddressesRequest",
+	CmdGetBalancesByAddressesResponseMessage:                      "GetBalancesByAddressesResponse",
+	CmdNotifyNewBlockTemplateRequestMessage:                       "NotifyNewBlockTemplateRequest",
+	CmdNotifyNewBlockTemplateResponseMessage:                      "NotifyNewBlockTemplateResponse",
+	CmdNewBlockTemplateNotificationMessage:                        "NewBlockTemplateNotification",
+	CmdGetMempoolEntriesByAddressesRequestMessage:                 "GetMempoolEntriesByAddressesRequest",
+	CmdGetMempoolEntriesByAddressesResponseMessage:                "GetMempoolEntriesByAddressesResponse",
+	CmdGetCoinSupplyRequestMessage:                                "GetCoinSupplyRequest",
+	CmdGetCoinSupplyResponseMessage:                               "GetCoinSupplyResponse",
+	CmdGetFeeEstimateRequestMessage:                               "GetFeeEstimateRequest",
+	CmdGetFeeEstimateResponseMessage:                              "GetFeeEstimateResponse",
+	CmdSubmitTransactionReplacementRequestMessage:                 "SubmitTransactionReplacementRequest",
+	CmdSubmitTransactionReplacementResponseMessage:                "SubmitTransactionReplacementResponse",
 }
 
 // Message is an interface that describes a kaspa message. A type that

app/appmessage/p2p_msgblock.go

@@ -15,19 +15,6 @@ 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

@@ -18,16 +18,21 @@ import (
 
 // TestBlock tests the MsgBlock API.
 func TestBlock(t *testing.T) {
-	pver := ProtocolVersion
+	pver := uint32(4)
 
 	// Block 1 header.
-	parentHashes := blockOne.Header.ParentHashes
+	parents := blockOne.Header.Parents
 	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)
+	daaScore := blockOne.Header.DAAScore
+	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)
@@ -127,11 +132,11 @@ func TestConvertToPartial(t *testing.T) {
 	}
 }
 
-//blockOne is the first block in the mainnet block DAG.
+// blockOne is the first block in the mainnet block DAG.
 var blockOne = MsgBlock{
 	Header: MsgBlockHeader{
 		Version:              0,
-		ParentHashes:         []*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash},
+		Parents:              []externalapi.BlockLevelParents{[]*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash}},
 		HashMerkleRoot:       mainnetGenesisMerkleRoot,
 		AcceptedIDMerkleRoot: exampleAcceptedIDMerkleRoot,
 		UTXOCommitment:       exampleUTXOCommitment,

app/appmessage/p2p_msgblockheader.go

@@ -5,13 +5,12 @@
 package appmessage
 
 import (
-	"math"
+	"math/big"
 
 	"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,
@@ -39,8 +38,8 @@ type MsgBlockHeader struct {
 	// Version of the block. This is not the same as the protocol version.
 	Version uint16
 
-	// Hashes of the parent block headers in the blockDAG.
-	ParentHashes []*externalapi.DomainHash
+	// Parents are the parent block hashes of the block in the DAG per superblock level.
+	Parents []externalapi.BlockLevelParents
 
 	// HashMerkleRoot is the merkle tree reference to hash of all transactions for the block.
 	HashMerkleRoot *externalapi.DomainHash
@@ -60,15 +59,16 @@ type MsgBlockHeader struct {
 
 	// Nonce used to generate the block.
 	Nonce uint64
-}
 
-// NumParentBlocks return the number of entries in ParentHashes
-func (h *MsgBlockHeader) NumParentBlocks() byte {
-	numParents := len(h.ParentHashes)
-	if numParents > math.MaxUint8 {
-		panic(errors.Errorf("number of parents is %d, which is more than one byte can fit", numParents))
-	}
-	return byte(numParents)
+	// DAASCore is the DAA score of the block.
+	DAAScore uint64
+
+	BlueScore uint64
+
+	// BlueWork is the blue work of the block.
+	BlueWork *big.Int
+
+	PruningPoint *externalapi.DomainHash
 }
 
 // BlockHash computes the block identifier hash for the given block header.
@@ -76,33 +76,27 @@ 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, parentHashes []*externalapi.DomainHash, hashMerkleRoot *externalapi.DomainHash,
-	acceptedIDMerkleRoot *externalapi.DomainHash, utxoCommitment *externalapi.DomainHash, bits uint32, nonce uint64) *MsgBlockHeader {
+func NewBlockHeader(version uint16, parents []externalapi.BlockLevelParents, hashMerkleRoot *externalapi.DomainHash,
+	acceptedIDMerkleRoot *externalapi.DomainHash, utxoCommitment *externalapi.DomainHash, bits uint32, nonce,
+	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,
-		ParentHashes:         parentHashes,
+		Parents:              parents,
 		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

@@ -5,29 +5,34 @@
 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"
 )
 
 // TestBlockHeader tests the MsgBlockHeader API.
 func TestBlockHeader(t *testing.T) {
 	nonce := uint64(0xba4d87a69924a93d)
 
-	hashes := []*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash}
+	parents := []externalapi.BlockLevelParents{[]*externalapi.DomainHash{mainnetGenesisHash, simnetGenesisHash}}
 
 	merkleHash := mainnetGenesisMerkleRoot
 	acceptedIDMerkleRoot := exampleAcceptedIDMerkleRoot
 	bits := uint32(0x1d00ffff)
-	bh := NewBlockHeader(1, hashes, merkleHash, acceptedIDMerkleRoot, exampleUTXOCommitment, bits, nonce)
+	daaScore := uint64(123)
+	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.ParentHashes, hashes) {
-		t.Errorf("NewBlockHeader: wrong prev hashes - got %v, want %v",
-			spew.Sprint(bh.ParentHashes), spew.Sprint(hashes))
+	if !reflect.DeepEqual(bh.Parents, parents) {
+		t.Errorf("NewBlockHeader: wrong parents - got %v, want %v",
+			spew.Sprint(bh.Parents), spew.Sprint(parents))
 	}
 	if bh.HashMerkleRoot != merkleHash {
 		t.Errorf("NewBlockHeader: wrong merkle root - got %v, want %v",
@@ -41,44 +46,20 @@ func TestBlockHeader(t *testing.T) {
 		t.Errorf("NewBlockHeader: wrong nonce - got %v, want %v",
 			bh.Nonce, nonce)
 	}
-}
-
-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.DAAScore != daaScore {
+		t.Errorf("NewBlockHeader: wrong daaScore - got %v, want %v",
+			bh.DAAScore, daaScore)
 	}
-	genesisBlockHdr := &MsgBlockHeader{
-		Version:        1,
-		ParentHashes:   []*externalapi.DomainHash{},
-		HashMerkleRoot: mainnetGenesisMerkleRoot,
-		Timestamp:      timestamp,
-		Bits:           bits,
-		Nonce:          nonce,
+	if bh.BlueScore != blueScore {
+		t.Errorf("NewBlockHeader: wrong blueScore - got %v, want %v",
+			bh.BlueScore, blueScore)
 	}
-
-	tests := []struct {
-		in        *MsgBlockHeader // Block header to encode
-		isGenesis bool            // Expected result for call of .IsGenesis
-	}{
-		{genesisBlockHdr, true},
-		{baseBlockHdr, false},
+	if bh.BlueWork != blueWork {
+		t.Errorf("NewBlockHeader: wrong blueWork - got %v, want %v",
+			bh.BlueWork, blueWork)
 	}
-
-	t.Logf("Running %d tests", len(tests))
-	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)
-		}
+	if !bh.PruningPoint.Equal(pruningPoint) {
+		t.Errorf("NewBlockHeader: wrong pruningPoint - got %v, want %v",
+			bh.PruningPoint, pruningPoint)
 	}
 }

app/appmessage/p2p_msgblockwithtrusteddata.go

@@ -0,0 +1,54 @@
+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

@@ -0,0 +1,20 @@
+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

@@ -0,0 +1,21 @@
+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

@@ -0,0 +1,16 @@
+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

@@ -1,65 +0,0 @@
-// 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_msgibdchainblocklocator.go

@@ -0,0 +1,27 @@
+package appmessage
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// MsgIBDChainBlockLocator implements the Message interface and represents a kaspa
+// locator message. It is used to find the blockLocator of a peer that is
+// syncing with you.
+type MsgIBDChainBlockLocator struct {
+	baseMessage
+	BlockLocatorHashes []*externalapi.DomainHash
+}
+
+// Command returns the protocol command string for the message. This is part
+// of the Message interface implementation.
+func (msg *MsgIBDChainBlockLocator) Command() MessageCommand {
+	return CmdIBDChainBlockLocator
+}
+
+// NewMsgIBDChainBlockLocator returns a new kaspa locator message that conforms to
+// the Message interface. See MsgBlockLocator for details.
+func NewMsgIBDChainBlockLocator(locatorHashes []*externalapi.DomainHash) *MsgIBDChainBlockLocator {
+	return &MsgIBDChainBlockLocator{
+		BlockLocatorHashes: locatorHashes,
+	}
+}

app/appmessage/p2p_msgpruningpointhash.go

@@ -1,23 +0,0 @@
-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

@@ -0,0 +1,20 @@
+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

@@ -0,0 +1,20 @@
+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
-	BlockBlueScore  uint64
+	BlockDAAScore   uint64
 	IsCoinbase      bool
 }

app/appmessage/p2p_msgrequestanticone.go

@@ -0,0 +1,33 @@
+// 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 (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// MsgRequestAnticone implements the Message interface and represents a kaspa
+// RequestHeaders message. It is used to request the set past(ContextHash) \cap anticone(BlockHash)
+type MsgRequestAnticone struct {
+	baseMessage
+	BlockHash   *externalapi.DomainHash
+	ContextHash *externalapi.DomainHash
+}
+
+// Command returns the protocol command string for the message. This is part
+// of the Message interface implementation.
+func (msg *MsgRequestAnticone) Command() MessageCommand {
+	return CmdRequestAnticone
+}
+
+// NewMsgRequestAnticone returns a new kaspa RequestPastDiff message that conforms to the
+// Message interface using the passed parameters and defaults for the remaining
+// fields.
+func NewMsgRequestAnticone(blockHash, contextHash *externalapi.DomainHash) *MsgRequestAnticone {
+	return &MsgRequestAnticone{
+		BlockHash:   blockHash,
+		ContextHash: contextHash,
+	}
+}

app/appmessage/p2p_msgrequestblocklocator.go

@@ -10,7 +10,6 @@ import (
 // The locator is returned via a locator message (MsgBlockLocator).
 type MsgRequestBlockLocator struct {
 	baseMessage
-	LowHash  *externalapi.DomainHash
 	HighHash *externalapi.DomainHash
 	Limit    uint32
 }
@@ -24,9 +23,8 @@ 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(lowHash, highHash *externalapi.DomainHash, limit uint32) *MsgRequestBlockLocator {
+func NewMsgRequestBlockLocator(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, &externalapi.DomainHash{}, 0)
+	msg := NewMsgRequestBlockLocator(highHash, 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 MsgRequestHeaders API.
+// TestRequstIBDBlocks tests the MsgRequestIBDBlocks 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("NewMsgRequstHeaders: wrong high hash - got %v, want %v",
+		t.Errorf("NewMsgRequstIBDBlocks: 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("NewMsgRequstHeaders: wrong command - got %v want %v",
+		t.Errorf("NewMsgRequstIBDBlocks: wrong command - got %v want %v",
 			cmd, wantCmd)
 	}
 }

app/appmessage/p2p_msgrequestibdchainblocklocator.go

@@ -0,0 +1,31 @@
+package appmessage
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// MsgRequestIBDChainBlockLocator implements the Message interface and represents a kaspa
+// IBDRequestChainBlockLocator message. It is used to request a block locator between low
+// and high hash.
+// The locator is returned via a locator message (MsgIBDChainBlockLocator).
+type MsgRequestIBDChainBlockLocator struct {
+	baseMessage
+	HighHash *externalapi.DomainHash
+	LowHash  *externalapi.DomainHash
+}
+
+// Command returns the protocol command string for the message. This is part
+// of the Message interface implementation.
+func (msg *MsgRequestIBDChainBlockLocator) Command() MessageCommand {
+	return CmdRequestIBDChainBlockLocator
+}
+
+// NewMsgIBDRequestChainBlockLocator returns a new IBDRequestChainBlockLocator message that conforms to the
+// Message interface using the passed parameters and defaults for the remaining
+// fields.
+func NewMsgIBDRequestChainBlockLocator(highHash, lowHash *externalapi.DomainHash) *MsgRequestIBDChainBlockLocator {
+	return &MsgRequestIBDChainBlockLocator{
+		HighHash: highHash,
+		LowHash:  lowHash,
+	}
+}

app/appmessage/p2p_msgrequestnextpruningpointanditsanticoneblocks.go

@@ -0,0 +1,22 @@
+package appmessage
+
+// MsgRequestNextPruningPointAndItsAnticoneBlocks implements the Message interface and represents a kaspa
+// RequestNextPruningPointAndItsAnticoneBlocks message. It is used to notify the IBD syncer peer to send
+// more blocks from the pruning anticone.
+//
+// This message has no payload.
+type MsgRequestNextPruningPointAndItsAnticoneBlocks struct {
+	baseMessage
+}
+
+// Command returns the protocol command string for the message. This is part
+// of the Message interface implementation.
+func (msg *MsgRequestNextPruningPointAndItsAnticoneBlocks) Command() MessageCommand {
+	return CmdRequestNextPruningPointAndItsAnticoneBlocks
+}
+
+// NewMsgRequestNextPruningPointAndItsAnticoneBlocks returns a new kaspa RequestNextPruningPointAndItsAnticoneBlocks message that conforms to the
+// Message interface.
+func NewMsgRequestNextPruningPointAndItsAnticoneBlocks() *MsgRequestNextPruningPointAndItsAnticoneBlocks {
+	return &MsgRequestNextPruningPointAndItsAnticoneBlocks{}
+}

app/appmessage/p2p_msgrequestpruningpointproof.go

@@ -0,0 +1,16 @@
+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"
 )
 
-// MsgRequestPruningPointUTXOSetAndBlock represents a kaspa RequestPruningPointUTXOSetAndBlock message
-type MsgRequestPruningPointUTXOSetAndBlock struct {
+// MsgRequestPruningPointUTXOSet represents a kaspa RequestPruningPointUTXOSet message
+type MsgRequestPruningPointUTXOSet struct {
 	baseMessage
 	PruningPointHash *externalapi.DomainHash
 }
 
 // Command returns the protocol command string for the message
-func (msg *MsgRequestPruningPointUTXOSetAndBlock) Command() MessageCommand {
-	return CmdRequestPruningPointUTXOSetAndBlock
+func (msg *MsgRequestPruningPointUTXOSet) Command() MessageCommand {
+	return CmdRequestPruningPointUTXOSet
 }
 
-// NewMsgRequestPruningPointUTXOSetAndBlock returns a new MsgRequestPruningPointUTXOSetAndBlock
-func NewMsgRequestPruningPointUTXOSetAndBlock(pruningPointHash *externalapi.DomainHash) *MsgRequestPruningPointUTXOSetAndBlock {
-	return &MsgRequestPruningPointUTXOSetAndBlock{
+// NewMsgRequestPruningPointUTXOSet returns a new MsgRequestPruningPointUTXOSet
+func NewMsgRequestPruningPointUTXOSet(pruningPointHash *externalapi.DomainHash) *MsgRequestPruningPointUTXOSet {
+	return &MsgRequestPruningPointUTXOSet{
 		PruningPointHash: pruningPointHash,
 	}
 }

app/appmessage/p2p_msgtrusteddata.go

@@ -0,0 +1,25 @@
+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

@@ -6,7 +6,6 @@ package appmessage
 
 import (
 	"encoding/binary"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"strconv"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
@@ -91,16 +90,18 @@ 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) *TxIn {
+func NewTxIn(prevOut *Outpoint, signatureScript []byte, sequence uint64, sigOpCount byte) *TxIn {
 	return &TxIn{
 		PreviousOutpoint: *prevOut,
 		SignatureScript:  signatureScript,
 		Sequence:         sequence,
+		SigOpCount:       sigOpCount,
 	}
 }
 
@@ -133,7 +134,6 @@ type MsgTx struct {
 	LockTime     uint64
 	SubnetworkID externalapi.DomainSubnetworkID
 	Gas          uint64
-	PayloadHash  externalapi.DomainHash
 	Payload      []byte
 }
 
@@ -179,7 +179,6 @@ func (msg *MsgTx) Copy() *MsgTx {
 		LockTime:     msg.LockTime,
 		SubnetworkID: msg.SubnetworkID,
 		Gas:          msg.Gas,
-		PayloadHash:  msg.PayloadHash,
 	}
 
 	if msg.Payload != nil {
@@ -209,6 +208,7 @@ func (msg *MsgTx) Copy() *MsgTx {
 			PreviousOutpoint: newOutpoint,
 			SignatureScript:  newScript,
 			Sequence:         oldTxIn.Sequence,
+			SigOpCount:       oldTxIn.SigOpCount,
 		}
 
 		// Finally, append this fully copied txin.
@@ -280,18 +280,12 @@ 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 := ProtocolVersion
+	pver := uint32(4)
 
 	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)
+	txIn := NewTxIn(prevOut, sigScript, constants.MaxTxInSequenceNum, 1)
 	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 := "4bee9ee495bd93a755de428376bd582a2bb6ec37c041753b711c0606d5745c13"
-	txID1Str := "f868bd20e816256b80eac976821be4589d24d21141bd1cec6e8005d0c16c6881"
+	txHash1Str := "b06f8b650115b5cf4d59499e10764a9312742930cb43c9b4ff6495d76f332ed7"
+	txID1Str := "e20225c3d065ee41743607ee627db44d01ef396dc9779b05b2caf55bac50e12d"
 	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 := "cb1bdb4a83d4885535fb3cceb5c96597b7df903db83f0ffcd779d703affd8efd"
+	hash2Str := "fa16a8ce88d52ca1ff45187bbba0d33044e9f5fe309e8d0b22d4812dcf1782b7"
 	wantHash2, err := externalapi.NewDomainHashFromString(hash2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)
 		return
 	}
 
-	id2Str := "ca080073d4ddf5b84443a0964af633f3c70a5b290fd3bc35a7e6f93fd33f9330"
+	id2Str := "89ffb49474637502d9059af38b8a95fc2f0d3baef5c801d7a9b9c8830671b711"
 	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) *MsgVersion {
+	subnetworkID *externalapi.DomainSubnetworkID, protocolVersion uint32) *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 := ProtocolVersion
+	pver := uint32(4)
 
 	// Create version message data.
 	tcpAddrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 16111}
-	me := NewNetAddress(tcpAddrMe, SFNodeNetwork)
+	me := NewNetAddress(tcpAddrMe)
 	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)
+	msg := NewMsgVersion(me, generatedID, "mainnet", nil, 4)
 	if msg.ProtocolVersion != pver {
 		t.Errorf("NewMsgVersion: wrong protocol version - got %v, want %v",
 			msg.ProtocolVersion, pver)

app/appmessage/p2p_netaddress.go

@@ -5,8 +5,9 @@
 package appmessage
 
 import (
-	"github.com/kaspanet/kaspad/util/mstime"
 	"net"
+
+	"github.com/kaspanet/kaspad/util/mstime"
 )
 
 // NetAddress defines information about a peer on the network including the time
@@ -15,9 +16,6 @@ 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
 
@@ -26,17 +24,6 @@ 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{
@@ -47,20 +34,19 @@ 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, services ServiceFlag) *NetAddress {
-	return NewNetAddressTimestamp(mstime.Now(), services, ip, port)
+func NewNetAddressIPPort(ip net.IP, port uint16) *NetAddress {
+	return NewNetAddressTimestamp(mstime.Now(), 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, services ServiceFlag, ip net.IP, port uint16) *NetAddress {
+	timestamp mstime.Time, 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,
 	}
@@ -69,6 +55,10 @@ 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, services ServiceFlag) *NetAddress {
-	return NewNetAddressIPPort(addr.IP, uint16(addr.Port), services)
+func NewNetAddress(addr *net.TCPAddr) *NetAddress {
+	return NewNetAddressIPPort(addr.IP, uint16(addr.Port))
+}
+
+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}, 0)
+	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port})
 
 	// Ensure we get the same ip, port, and services back out.
 	if !na.IP.Equal(ip) {
@@ -25,21 +25,4 @@ 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

@@ -0,0 +1,22 @@
+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

@@ -1,16 +0,0 @@
-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

@@ -11,9 +11,6 @@ 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

@@ -0,0 +1,43 @@
+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_fee_estimate.go

@@ -0,0 +1,47 @@
+package appmessage
+
+// GetFeeEstimateRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type GetFeeEstimateRequestMessage struct {
+	baseMessage
+}
+
+// Command returns the protocol command string for the message
+func (msg *GetFeeEstimateRequestMessage) Command() MessageCommand {
+	return CmdGetFeeEstimateRequestMessage
+}
+
+// NewGetFeeEstimateRequestMessage returns a instance of the message
+func NewGetFeeEstimateRequestMessage() *GetFeeEstimateRequestMessage {
+	return &GetFeeEstimateRequestMessage{}
+}
+
+type RPCFeeRateBucket struct {
+	Feerate          float64
+	EstimatedSeconds float64
+}
+
+type RPCFeeEstimate struct {
+	PriorityBucket RPCFeeRateBucket
+	NormalBuckets  []RPCFeeRateBucket
+	LowBuckets     []RPCFeeRateBucket
+}
+
+// GetCoinSupplyResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type GetFeeEstimateResponseMessage struct {
+	baseMessage
+	Estimate RPCFeeEstimate
+
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *GetFeeEstimateResponseMessage) Command() MessageCommand {
+	return CmdGetFeeEstimateResponseMessage
+}
+
+// NewGetFeeEstimateResponseMessage returns a instance of the message
+func NewGetFeeEstimateResponseMessage() *GetFeeEstimateResponseMessage {
+	return &GetFeeEstimateResponseMessage{}
+}

app/appmessage/rpc_get_balance_by_address.go

@@ -0,0 +1,41 @@
+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

@@ -0,0 +1,47 @@
+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
-	IncludeTransactionVerboseData bool
+	Hash                string
+	IncludeTransactions 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, includeTransactionVerboseData bool) *GetBlockRequestMessage {
+func NewGetBlockRequestMessage(hash string, includeTransactions bool) *GetBlockRequestMessage {
 	return &GetBlockRequestMessage{
-		Hash:                          hash,
-		IncludeTransactionVerboseData: includeTransactionVerboseData,
+		Hash:                hash,
+		IncludeTransactions: includeTransactions,
 	}
 }
 
@@ -25,7 +25,7 @@ func NewGetBlockRequestMessage(hash string, includeTransactionVerboseData bool)
 // its respective RPC message
 type GetBlockResponseMessage struct {
 	baseMessage
-	BlockVerboseData *BlockVerboseData
+	Block *RPCBlock
 
 	Error *RPCError
 }
@@ -39,69 +39,3 @@ 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

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

app/appmessage/rpc_get_block_template.go

@@ -5,6 +5,7 @@ package appmessage
 type GetBlockTemplateRequestMessage struct {
 	baseMessage
 	PayAddress string
+	ExtraData  string
 }
 
 // Command returns the protocol command string for the message
@@ -13,9 +14,10 @@ func (msg *GetBlockTemplateRequestMessage) Command() MessageCommand {
 }
 
 // NewGetBlockTemplateRequestMessage returns a instance of the message
-func NewGetBlockTemplateRequestMessage(payAddress string) *GetBlockTemplateRequestMessage {
+func NewGetBlockTemplateRequestMessage(payAddress, extraData string) *GetBlockTemplateRequestMessage {
 	return &GetBlockTemplateRequestMessage{
 		PayAddress: payAddress,
+		ExtraData:  extraData,
 	}
 }
 
@@ -23,7 +25,7 @@ func NewGetBlockTemplateRequestMessage(payAddress string) *GetBlockTemplateReque
 // its respective RPC message
 type GetBlockTemplateResponseMessage struct {
 	baseMessage
-	MsgBlock *MsgBlock
+	Block    *RPCBlock
 	IsSynced bool
 
 	Error *RPCError
@@ -35,9 +37,9 @@ func (msg *GetBlockTemplateResponseMessage) Command() MessageCommand {
 }
 
 // NewGetBlockTemplateResponseMessage returns a instance of the message
-func NewGetBlockTemplateResponseMessage(msgBlock *MsgBlock, isSynced bool) *GetBlockTemplateResponseMessage {
+func NewGetBlockTemplateResponseMessage(block *RPCBlock, isSynced bool) *GetBlockTemplateResponseMessage {
 	return &GetBlockTemplateResponseMessage{
-		MsgBlock: msgBlock,
+		Block:    block,
 		IsSynced: isSynced,
 	}
 }

app/appmessage/rpc_get_blocks.go

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

app/appmessage/rpc_get_coin_supply.go

@@ -0,0 +1,40 @@
+package appmessage
+
+// GetCoinSupplyRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type GetCoinSupplyRequestMessage struct {
+	baseMessage
+}
+
+// Command returns the protocol command string for the message
+func (msg *GetCoinSupplyRequestMessage) Command() MessageCommand {
+	return CmdGetCoinSupplyRequestMessage
+}
+
+// NewGetCoinSupplyRequestMessage returns a instance of the message
+func NewGetCoinSupplyRequestMessage() *GetCoinSupplyRequestMessage {
+	return &GetCoinSupplyRequestMessage{}
+}
+
+// GetCoinSupplyResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type GetCoinSupplyResponseMessage struct {
+	baseMessage
+	MaxSompi         uint64
+	CirculatingSompi uint64
+
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *GetCoinSupplyResponseMessage) Command() MessageCommand {
+	return CmdGetCoinSupplyResponseMessage
+}
+
+// NewGetCoinSupplyResponseMessage returns a instance of the message
+func NewGetCoinSupplyResponseMessage(maxSompi uint64, circulatingSompi uint64) *GetCoinSupplyResponseMessage {
+	return &GetCoinSupplyResponseMessage{
+		MaxSompi:         maxSompi,
+		CirculatingSompi: circulatingSompi,
+	}
+}

app/appmessage/rpc_get_info.go

@@ -11,8 +11,8 @@ func (msg *GetInfoRequestMessage) Command() MessageCommand {
 	return CmdGetInfoRequestMessage
 }
 
-// NewGeInfoRequestMessage returns a instance of the message
-func NewGeInfoRequestMessage() *GetInfoRequestMessage {
+// NewGetInfoRequestMessage returns a instance of the message
+func NewGetInfoRequestMessage() *GetInfoRequestMessage {
 	return &GetInfoRequestMessage{}
 }
 
@@ -20,7 +20,11 @@ func NewGeInfoRequestMessage() *GetInfoRequestMessage {
 // its respective RPC message
 type GetInfoResponseMessage struct {
 	baseMessage
-	P2PID string
+	P2PID         string
+	MempoolSize   uint64
+	ServerVersion string
+	IsUtxoIndexed bool
+	IsSynced      bool
 
 	Error *RPCError
 }
@@ -31,8 +35,12 @@ func (msg *GetInfoResponseMessage) Command() MessageCommand {
 }
 
 // NewGetInfoResponseMessage returns a instance of the message
-func NewGetInfoResponseMessage(p2pID string) *GetInfoResponseMessage {
+func NewGetInfoResponseMessage(p2pID string, mempoolSize uint64, serverVersion string, isUtxoIndexed bool, isSynced bool) *GetInfoResponseMessage {
 	return &GetInfoResponseMessage{
-		P2PID: p2pID,
+		P2PID:         p2pID,
+		MempoolSize:   mempoolSize,
+		ServerVersion: serverVersion,
+		IsUtxoIndexed: isUtxoIndexed,
+		IsSynced:      isSynced,
 	}
 }

app/appmessage/rpc_get_mempool_entries.go

@@ -4,6 +4,8 @@ package appmessage
 // its respective RPC message
 type GetMempoolEntriesRequestMessage struct {
 	baseMessage
+	IncludeOrphanPool     bool
+	FilterTransactionPool bool
 }
 
 // Command returns the protocol command string for the message
@@ -12,8 +14,11 @@ func (msg *GetMempoolEntriesRequestMessage) Command() MessageCommand {
 }
 
 // NewGetMempoolEntriesRequestMessage returns a instance of the message
-func NewGetMempoolEntriesRequestMessage() *GetMempoolEntriesRequestMessage {
-	return &GetMempoolEntriesRequestMessage{}
+func NewGetMempoolEntriesRequestMessage(includeOrphanPool bool, filterTransactionPool bool) *GetMempoolEntriesRequestMessage {
+	return &GetMempoolEntriesRequestMessage{
+		IncludeOrphanPool:     includeOrphanPool,
+		FilterTransactionPool: filterTransactionPool,
+	}
 }
 
 // GetMempoolEntriesResponseMessage is an appmessage corresponding to

app/appmessage/rpc_get_mempool_entries_by_addresses.go

@@ -0,0 +1,52 @@
+package appmessage
+
+// MempoolEntryByAddress represents MempoolEntries associated with some address
+type MempoolEntryByAddress struct {
+	Address   string
+	Receiving []*MempoolEntry
+	Sending   []*MempoolEntry
+}
+
+// GetMempoolEntriesByAddressesRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type GetMempoolEntriesByAddressesRequestMessage struct {
+	baseMessage
+	Addresses             []string
+	IncludeOrphanPool     bool
+	FilterTransactionPool bool
+}
+
+// Command returns the protocol command string for the message
+func (msg *GetMempoolEntriesByAddressesRequestMessage) Command() MessageCommand {
+	return CmdGetMempoolEntriesByAddressesRequestMessage
+}
+
+// NewGetMempoolEntriesByAddressesRequestMessage returns a instance of the message
+func NewGetMempoolEntriesByAddressesRequestMessage(addresses []string, includeOrphanPool bool, filterTransactionPool bool) *GetMempoolEntriesByAddressesRequestMessage {
+	return &GetMempoolEntriesByAddressesRequestMessage{
+		Addresses:             addresses,
+		IncludeOrphanPool:     includeOrphanPool,
+		FilterTransactionPool: filterTransactionPool,
+	}
+}
+
+// GetMempoolEntriesByAddressesResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type GetMempoolEntriesByAddressesResponseMessage struct {
+	baseMessage
+	Entries []*MempoolEntryByAddress
+
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *GetMempoolEntriesByAddressesResponseMessage) Command() MessageCommand {
+	return CmdGetMempoolEntriesByAddressesResponseMessage
+}
+
+// NewGetMempoolEntriesByAddressesResponseMessage returns a instance of the message
+func NewGetMempoolEntriesByAddressesResponseMessage(entries []*MempoolEntryByAddress) *GetMempoolEntriesByAddressesResponseMessage {
+	return &GetMempoolEntriesByAddressesResponseMessage{
+		Entries: entries,
+	}
+}

app/appmessage/rpc_get_mempool_entry.go

@@ -4,7 +4,9 @@ package appmessage
 // its respective RPC message
 type GetMempoolEntryRequestMessage struct {
 	baseMessage
-	TxID string
+	TxID                  string
+	IncludeOrphanPool     bool
+	FilterTransactionPool bool
 }
 
 // Command returns the protocol command string for the message
@@ -13,8 +15,12 @@ func (msg *GetMempoolEntryRequestMessage) Command() MessageCommand {
 }
 
 // NewGetMempoolEntryRequestMessage returns a instance of the message
-func NewGetMempoolEntryRequestMessage(txID string) *GetMempoolEntryRequestMessage {
-	return &GetMempoolEntryRequestMessage{TxID: txID}
+func NewGetMempoolEntryRequestMessage(txID string, includeOrphanPool bool, filterTransactionPool bool) *GetMempoolEntryRequestMessage {
+	return &GetMempoolEntryRequestMessage{
+		TxID:                  txID,
+		IncludeOrphanPool:     includeOrphanPool,
+		FilterTransactionPool: filterTransactionPool,
+	}
 }
 
 // GetMempoolEntryResponseMessage is an appmessage corresponding to
@@ -28,8 +34,9 @@ type GetMempoolEntryResponseMessage struct {
 
 // MempoolEntry represents a transaction in the mempool.
 type MempoolEntry struct {
-	Fee                    uint64
-	TransactionVerboseData *TransactionVerboseData
+	Fee         uint64
+	Transaction *RPCTransaction
+	IsOrphan    bool
 }
 
 // Command returns the protocol command string for the message
@@ -38,11 +45,12 @@ func (msg *GetMempoolEntryResponseMessage) Command() MessageCommand {
 }
 
 // NewGetMempoolEntryResponseMessage returns a instance of the message
-func NewGetMempoolEntryResponseMessage(fee uint64, transactionVerboseData *TransactionVerboseData) *GetMempoolEntryResponseMessage {
+func NewGetMempoolEntryResponseMessage(fee uint64, transaction *RPCTransaction, isOrphan bool) *GetMempoolEntryResponseMessage {
 	return &GetMempoolEntryResponseMessage{
 		Entry: &MempoolEntry{
-			Fee:                    fee,
-			TransactionVerboseData: transactionVerboseData,
+			Fee:         fee,
+			Transaction: transaction,
+			IsOrphan:    isOrphan,
 		},
 	}
 }

app/appmessage/rpc_get_virtual_selected_parent_chain_from_block.go

@@ -4,7 +4,8 @@ package appmessage
 // its respective RPC message
 type GetVirtualSelectedParentChainFromBlockRequestMessage struct {
 	baseMessage
-	StartHash string
+	StartHash                     string
+	IncludeAcceptedTransactionIDs bool
 }
 
 // Command returns the protocol command string for the message
@@ -13,18 +14,29 @@ func (msg *GetVirtualSelectedParentChainFromBlockRequestMessage) Command() Messa
 }
 
 // NewGetVirtualSelectedParentChainFromBlockRequestMessage returns a instance of the message
-func NewGetVirtualSelectedParentChainFromBlockRequestMessage(startHash string) *GetVirtualSelectedParentChainFromBlockRequestMessage {
+func NewGetVirtualSelectedParentChainFromBlockRequestMessage(
+	startHash string, includeAcceptedTransactionIDs bool) *GetVirtualSelectedParentChainFromBlockRequestMessage {
+
 	return &GetVirtualSelectedParentChainFromBlockRequestMessage{
-		StartHash: startHash,
+		StartHash:                     startHash,
+		IncludeAcceptedTransactionIDs: includeAcceptedTransactionIDs,
 	}
 }
 
+// AcceptedTransactionIDs is a part of the GetVirtualSelectedParentChainFromBlockResponseMessage and
+// VirtualSelectedParentChainChangedNotificationMessage appmessages
+type AcceptedTransactionIDs struct {
+	AcceptingBlockHash     string
+	AcceptedTransactionIDs []string
+}
+
 // GetVirtualSelectedParentChainFromBlockResponseMessage is an appmessage corresponding to
 // its respective RPC message
 type GetVirtualSelectedParentChainFromBlockResponseMessage struct {
 	baseMessage
 	RemovedChainBlockHashes []string
-	AddedChainBlocks        []*ChainBlock
+	AddedChainBlockHashes   []string
+	AcceptedTransactionIDs  []*AcceptedTransactionIDs
 
 	Error *RPCError
 }
@@ -35,11 +47,12 @@ func (msg *GetVirtualSelectedParentChainFromBlockResponseMessage) Command() Mess
 }
 
 // NewGetVirtualSelectedParentChainFromBlockResponseMessage returns a instance of the message
-func NewGetVirtualSelectedParentChainFromBlockResponseMessage(removedChainBlockHashes []string,
-	addedChainBlocks []*ChainBlock) *GetVirtualSelectedParentChainFromBlockResponseMessage {
+func NewGetVirtualSelectedParentChainFromBlockResponseMessage(removedChainBlockHashes,
+	addedChainBlockHashes []string, acceptedTransactionIDs []*AcceptedTransactionIDs) *GetVirtualSelectedParentChainFromBlockResponseMessage {
 
 	return &GetVirtualSelectedParentChainFromBlockResponseMessage{
 		RemovedChainBlockHashes: removedChainBlockHashes,
-		AddedChainBlocks:        addedChainBlocks,
+		AddedChainBlockHashes:   addedChainBlockHashes,
+		AcceptedTransactionIDs:  acceptedTransactionIDs,
 	}
 }

app/appmessage/rpc_notify_block_added.go

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

app/appmessage/rpc_notify_new_block_template.go

@@ -0,0 +1,50 @@
+package appmessage
+
+// NotifyNewBlockTemplateRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type NotifyNewBlockTemplateRequestMessage struct {
+	baseMessage
+}
+
+// Command returns the protocol command string for the message
+func (msg *NotifyNewBlockTemplateRequestMessage) Command() MessageCommand {
+	return CmdNotifyNewBlockTemplateRequestMessage
+}
+
+// NewNotifyNewBlockTemplateRequestMessage returns an instance of the message
+func NewNotifyNewBlockTemplateRequestMessage() *NotifyNewBlockTemplateRequestMessage {
+	return &NotifyNewBlockTemplateRequestMessage{}
+}
+
+// NotifyNewBlockTemplateResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type NotifyNewBlockTemplateResponseMessage struct {
+	baseMessage
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *NotifyNewBlockTemplateResponseMessage) Command() MessageCommand {
+	return CmdNotifyNewBlockTemplateResponseMessage
+}
+
+// NewNotifyNewBlockTemplateResponseMessage returns an instance of the message
+func NewNotifyNewBlockTemplateResponseMessage() *NotifyNewBlockTemplateResponseMessage {
+	return &NotifyNewBlockTemplateResponseMessage{}
+}
+
+// NewBlockTemplateNotificationMessage is an appmessage corresponding to
+// its respective RPC message
+type NewBlockTemplateNotificationMessage struct {
+	baseMessage
+}
+
+// Command returns the protocol command string for the message
+func (msg *NewBlockTemplateNotificationMessage) Command() MessageCommand {
+	return CmdNewBlockTemplateNotificationMessage
+}
+
+// NewNewBlockTemplateNotificationMessage returns an instance of the message
+func NewNewBlockTemplateNotificationMessage() *NewBlockTemplateNotificationMessage {
+	return &NewBlockTemplateNotificationMessage{}
+}

app/appmessage/rpc_notify_pruning_point_utxo_set_override.go

@@ -0,0 +1,83 @@
+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

@@ -0,0 +1,55 @@
+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

@@ -4,6 +4,7 @@ package appmessage
 // its respective RPC message
 type NotifyVirtualSelectedParentChainChangedRequestMessage struct {
 	baseMessage
+	IncludeAcceptedTransactionIDs bool
 }
 
 // Command returns the protocol command string for the message
@@ -11,9 +12,13 @@ func (msg *NotifyVirtualSelectedParentChainChangedRequestMessage) Command() Mess
 	return CmdNotifyVirtualSelectedParentChainChangedRequestMessage
 }
 
-// NewNotifyVirtualSelectedParentChainChangedRequestMessage returns a instance of the message
-func NewNotifyVirtualSelectedParentChainChangedRequestMessage() *NotifyVirtualSelectedParentChainChangedRequestMessage {
-	return &NotifyVirtualSelectedParentChainChangedRequestMessage{}
+// NewNotifyVirtualSelectedParentChainChangedRequestMessage returns an instance of the message
+func NewNotifyVirtualSelectedParentChainChangedRequestMessage(
+	includeAcceptedTransactionIDs bool) *NotifyVirtualSelectedParentChainChangedRequestMessage {
+
+	return &NotifyVirtualSelectedParentChainChangedRequestMessage{
+		IncludeAcceptedTransactionIDs: includeAcceptedTransactionIDs,
+	}
 }
 
 // NotifyVirtualSelectedParentChainChangedResponseMessage is an appmessage corresponding to
@@ -38,19 +43,8 @@ func NewNotifyVirtualSelectedParentChainChangedResponseMessage() *NotifyVirtualS
 type VirtualSelectedParentChainChangedNotificationMessage struct {
 	baseMessage
 	RemovedChainBlockHashes []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
+	AddedChainBlockHashes   []string
+	AcceptedTransactionIDs  []*AcceptedTransactionIDs
 }
 
 // Command returns the protocol command string for the message
@@ -59,11 +53,12 @@ func (msg *VirtualSelectedParentChainChangedNotificationMessage) Command() Messa
 }
 
 // NewVirtualSelectedParentChainChangedNotificationMessage returns a instance of the message
-func NewVirtualSelectedParentChainChangedNotificationMessage(removedChainBlockHashes []string,
-	addedChainBlocks []*ChainBlock) *VirtualSelectedParentChainChangedNotificationMessage {
+func NewVirtualSelectedParentChainChangedNotificationMessage(removedChainBlockHashes,
+	addedChainBlocks []string, acceptedTransactionIDs []*AcceptedTransactionIDs) *VirtualSelectedParentChainChangedNotificationMessage {
 
 	return &VirtualSelectedParentChainChangedNotificationMessage{
 		RemovedChainBlockHashes: removedChainBlockHashes,
-		AddedChainBlocks:        addedChainBlocks,
+		AddedChainBlockHashes:   addedChainBlocks,
+		AcceptedTransactionIDs:  acceptedTransactionIDs,
 	}
 }

app/appmessage/rpc_submit_block.go

@@ -4,7 +4,8 @@ package appmessage
 // its respective RPC message
 type SubmitBlockRequestMessage struct {
 	baseMessage
-	Block *MsgBlock
+	Block             *RPCBlock
+	AllowNonDAABlocks bool
 }
 
 // Command returns the protocol command string for the message
@@ -13,9 +14,10 @@ func (msg *SubmitBlockRequestMessage) Command() MessageCommand {
 }
 
 // NewSubmitBlockRequestMessage returns a instance of the message
-func NewSubmitBlockRequestMessage(block *MsgBlock) *SubmitBlockRequestMessage {
+func NewSubmitBlockRequestMessage(block *RPCBlock, allowNonDAABlocks bool) *SubmitBlockRequestMessage {
 	return &SubmitBlockRequestMessage{
-		Block: block,
+		Block:             block,
+		AllowNonDAABlocks: allowNonDAABlocks,
 	}
 }
 
@@ -53,7 +55,51 @@ func (msg *SubmitBlockResponseMessage) Command() MessageCommand {
 	return CmdSubmitBlockResponseMessage
 }
 
-// NewSubmitBlockResponseMessage returns a instance of the message
+// NewSubmitBlockResponseMessage returns an 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

@@ -5,6 +5,7 @@ package appmessage
 type SubmitTransactionRequestMessage struct {
 	baseMessage
 	Transaction *RPCTransaction
+	AllowOrphan bool
 }
 
 // Command returns the protocol command string for the message
@@ -13,9 +14,10 @@ func (msg *SubmitTransactionRequestMessage) Command() MessageCommand {
 }
 
 // NewSubmitTransactionRequestMessage returns a instance of the message
-func NewSubmitTransactionRequestMessage(transaction *RPCTransaction) *SubmitTransactionRequestMessage {
+func NewSubmitTransactionRequestMessage(transaction *RPCTransaction, allowOrphan bool) *SubmitTransactionRequestMessage {
 	return &SubmitTransactionRequestMessage{
 		Transaction: transaction,
+		AllowOrphan: allowOrphan,
 	}
 }
 
@@ -49,8 +51,9 @@ type RPCTransaction struct {
 	LockTime     uint64
 	SubnetworkID string
 	Gas          uint64
-	PayloadHash  string
 	Payload      string
+	Mass         uint64
+	VerboseData  *RPCTransactionVerboseData
 }
 
 // RPCTransactionInput is a kaspad transaction input representation
@@ -59,6 +62,8 @@ type RPCTransactionInput struct {
 	PreviousOutpoint *RPCOutpoint
 	SignatureScript  string
 	Sequence         uint64
+	SigOpCount       byte
+	VerboseData      *RPCTransactionInputVerboseData
 }
 
 // RPCScriptPublicKey is a kaspad ScriptPublicKey representation
@@ -72,6 +77,7 @@ type RPCScriptPublicKey struct {
 type RPCTransactionOutput struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
+	VerboseData     *RPCTransactionOutputVerboseData
 }
 
 // RPCOutpoint is a kaspad outpoint representation meant to be used
@@ -86,6 +92,25 @@ type RPCOutpoint struct {
 type RPCUTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
-	BlockBlueScore  uint64
+	BlockDAAScore   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/appmessage/rpc_submit_transaction_replacement.go

@@ -0,0 +1,42 @@
+package appmessage
+
+// SubmitTransactionReplacementRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type SubmitTransactionReplacementRequestMessage struct {
+	baseMessage
+	Transaction *RPCTransaction
+}
+
+// Command returns the protocol command string for the message
+func (msg *SubmitTransactionReplacementRequestMessage) Command() MessageCommand {
+	return CmdSubmitTransactionReplacementRequestMessage
+}
+
+// NewSubmitTransactionReplacementRequestMessage returns a instance of the message
+func NewSubmitTransactionReplacementRequestMessage(transaction *RPCTransaction) *SubmitTransactionReplacementRequestMessage {
+	return &SubmitTransactionReplacementRequestMessage{
+		Transaction: transaction,
+	}
+}
+
+// SubmitTransactionReplacementResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type SubmitTransactionReplacementResponseMessage struct {
+	baseMessage
+	TransactionID       string
+	ReplacedTransaction *RPCTransaction
+
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *SubmitTransactionReplacementResponseMessage) Command() MessageCommand {
+	return CmdSubmitTransactionReplacementResponseMessage
+}
+
+// NewSubmitTransactionReplacementResponseMessage returns a instance of the message
+func NewSubmitTransactionReplacementResponseMessage(transactionID string) *SubmitTransactionReplacementResponseMessage {
+	return &SubmitTransactionReplacementResponseMessage{
+		TransactionID: transactionID,
+	}
+}

app/component_manager.go

@@ -4,23 +4,21 @@ import (
 	"fmt"
 	"sync/atomic"
 
-	"github.com/kaspanet/kaspad/domain/utxoindex"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 
-	infrastructuredatabase "github.com/kaspanet/kaspad/infrastructure/db/database"
+	"github.com/kaspanet/kaspad/domain/miningmanager/mempool"
 
-	"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"
 )
 
@@ -50,8 +48,6 @@ func (a *ComponentManager) Start() {
 		panics.Exit(log, fmt.Sprintf("Error starting the net adapter: %+v", err))
 	}
 
-	a.maybeSeedFromDNS()
-
 	a.connectionManager.Start()
 }
 
@@ -72,6 +68,9 @@ func (a *ComponentManager) Stop() {
 		log.Errorf("Error stopping the net adapter: %+v", err)
 	}
 
+	a.protocolManager.Close()
+	close(a.protocolManager.Context().Domain().ConsensusEventsChannel())
+
 	return
 }
 
@@ -80,7 +79,16 @@ func (a *ComponentManager) Stop() {
 func NewComponentManager(cfg *config.Config, db infrastructuredatabase.Database, interrupt chan<- struct{}) (
 	*ComponentManager, error) {
 
-	domain, err := domain.New(cfg.ActiveNetParams, db, cfg.IsArchivalNode)
+	consensusConfig := consensus.Config{
+		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
 	}
@@ -97,7 +105,11 @@ func NewComponentManager(cfg *config.Config, db infrastructuredatabase.Database,
 
 	var utxoIndex *utxoindex.UTXOIndex
 	if cfg.UTXOIndex {
-		utxoIndex = utxoindex.New(domain.Consensus(), db)
+		utxoIndex, err = utxoindex.New(domain, db)
+		if err != nil {
+			return nil, err
+		}
+
 		log.Infof("UTXO index started")
 	}
 
@@ -109,7 +121,7 @@ func NewComponentManager(cfg *config.Config, db infrastructuredatabase.Database,
 	if err != nil {
 		return nil, err
 	}
-	rpcManager := setupRPC(cfg, domain, netAdapter, protocolManager, connectionManager, addressManager, utxoIndex, interrupt)
+	rpcManager := setupRPC(cfg, domain, netAdapter, protocolManager, connectionManager, addressManager, utxoIndex, domain.ConsensusEventsChannel(), interrupt)
 
 	return &ComponentManager{
 		cfg:               cfg,
@@ -130,6 +142,7 @@ func setupRPC(
 	connectionManager *connmanager.ConnectionManager,
 	addressManager *addressmanager.AddressManager,
 	utxoIndex *utxoindex.UTXOIndex,
+	consensusEventsChan chan externalapi.ConsensusEvent,
 	shutDownChan chan<- struct{},
 ) *rpc.Manager {
 
@@ -141,30 +154,15 @@ func setupRPC(
 		connectionManager,
 		addressManager,
 		utxoIndex,
+		consensusEventsChan,
 		shutDownChan,
 	)
-	protocolManager.SetOnBlockAddedToDAGHandler(rpcManager.NotifyBlockAddedToDAG)
+	protocolManager.SetOnNewBlockTemplateHandler(rpcManager.NotifyNewBlockTemplate)
+	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

@@ -0,0 +1,57 @@
+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

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

app/protocol/common/common.go

@@ -1,6 +1,8 @@
 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"
@@ -8,7 +10,18 @@ import (
 
 // DefaultTimeout is the default duration to wait for enqueuing/dequeuing
 // to/from routes.
-const DefaultTimeout = 30 * time.Second
+const DefaultTimeout = 120 * 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

@@ -1,65 +1,73 @@
 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,
-	blockInsertionResult *externalapi.BlockInsertionResult) error {
+func (f *FlowContext) OnNewBlock(block *externalapi.DomainBlock) error {
 
 	hash := consensushashing.BlockHash(block)
-	log.Debugf("OnNewBlock start for block %s", hash)
-	defer log.Debugf("OnNewBlock end for block %s", hash)
+	log.Tracef("OnNewBlock start for block %s", hash)
+	defer log.Tracef("OnNewBlock end for block %s", hash)
 
-	unorphaningResults, err := f.UnorphanBlocks(block)
+	unorphanedBlocks, err := f.UnorphanBlocks(block)
 	if err != nil {
 		return err
 	}
 
-	log.Debugf("OnNewBlock: block %s unorphaned %d blocks", hash, len(unorphaningResults))
+	log.Debugf("OnNewBlock: block %s unorphaned %d blocks", hash, len(unorphanedBlocks))
 
 	newBlocks := []*externalapi.DomainBlock{block}
-	newBlockInsertionResults := []*externalapi.BlockInsertionResult{blockInsertionResult}
-	for _, unorphaningResult := range unorphaningResults {
-		newBlocks = append(newBlocks, unorphaningResult.block)
-		newBlockInsertionResults = append(newBlockInsertionResults, unorphaningResult.blockInsertionResult)
-	}
+	newBlocks = append(newBlocks, unorphanedBlocks...)
 
-	for i, newBlock := range newBlocks {
+	allAcceptedTransactions := make([]*externalapi.DomainTransaction, 0)
+	for _, newBlock := range newBlocks {
 		log.Debugf("OnNewBlock: passing block %s transactions to mining manager", hash)
-		_, err = f.Domain().MiningManager().HandleNewBlockTransactions(newBlock.Transactions)
+		acceptedTransactions, 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)
-			blockInsertionResult = newBlockInsertionResults[i]
-			err := f.onBlockAddedToDAGHandler(newBlock, blockInsertionResult)
-			if err != nil {
-				return err
-			}
-		}
+	return f.broadcastTransactionsAfterBlockAdded(newBlocks, allAcceptedTransactions)
+}
+
+// OnNewBlockTemplate calls the handler function whenever a new block template is available for miners.
+func (f *FlowContext) OnNewBlockTemplate() error {
+	// Clear current template cache. Note we call this even if the handler is nil, in order to keep the
+	// state consistent without dependency on external event registration
+	f.Domain().MiningManager().ClearBlockTemplate()
+	if f.onNewBlockTemplateHandler != nil {
+		return f.onNewBlockTemplateHandler()
 	}
 
 	return nil
 }
 
-func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
-	block *externalapi.DomainBlock, transactionsAcceptedToMempool []*externalapi.DomainTransaction) error {
+// 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
+}
 
-	f.updateTransactionsToRebroadcast(block)
+func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
+	addedBlocks []*externalapi.DomainBlock, transactionsAcceptedToMempool []*externalapi.DomainTransaction) error {
 
 	// Don't relay transactions when in IBD.
 	if f.IsIBDRunning() {
@@ -68,7 +76,12 @@ func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
 
 	var txIDsToRebroadcast []*externalapi.DomainTransactionID
 	if f.shouldRebroadcastTransactions() {
-		txIDsToRebroadcast = f.txIDsToRebroadcast()
+		txsToRebroadcast, err := f.Domain().MiningManager().RevalidateHighPriorityTransactions()
+		if err != nil {
+			return err
+		}
+		txIDsToRebroadcast = consensushashing.TransactionIDs(txsToRebroadcast)
+		f.lastRebroadcastTime = time.Now()
 	}
 
 	txIDsToBroadcast := make([]*externalapi.DomainTransactionID, len(transactionsAcceptedToMempool)+len(txIDsToRebroadcast))
@@ -79,33 +92,33 @@ func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
 	for i, txID := range txIDsToRebroadcast {
 		txIDsToBroadcast[offset+i] = txID
 	}
-
-	if len(txIDsToBroadcast) == 0 {
-		return nil
-	}
-	if len(txIDsToBroadcast) > appmessage.MaxInvPerTxInvMsg {
-		txIDsToBroadcast = txIDsToBroadcast[:appmessage.MaxInvPerTxInvMsg]
-	}
-	inv := appmessage.NewMsgInvTransaction(txIDsToBroadcast)
-	return f.Broadcast(inv)
+	return f.EnqueueTransactionIDsForPropagation(txIDsToBroadcast)
 }
 
 // SharedRequestedBlocks returns a *blockrelay.SharedRequestedBlocks for sharing
 // data about requested blocks between different peers.
-func (f *FlowContext) SharedRequestedBlocks() *blockrelay.SharedRequestedBlocks {
+func (f *FlowContext) SharedRequestedBlocks() *SharedRequestedBlocks {
 	return f.sharedRequestedBlocks
 }
 
 // AddBlock adds the given block to the DAG and propagates it.
 func (f *FlowContext) AddBlock(block *externalapi.DomainBlock) error {
-	blockInsertionResult, err := f.Domain().Consensus().ValidateAndInsertBlock(block)
+	if len(block.Transactions) == 0 {
+		return protocolerrors.Errorf(false, "cannot add header only block")
+	}
+
+	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, blockInsertionResult)
+	err = f.OnNewBlockTemplate()
+	if err != nil {
+		return err
+	}
+	err = f.OnNewBlock(block)
 	if err != nil {
 		return err
 	}
@@ -130,7 +143,7 @@ func (f *FlowContext) TrySetIBDRunning(ibdPeer *peerpkg.Peer) bool {
 		return false
 	}
 	f.ibdPeer = ibdPeer
-	log.Infof("IBD started")
+	log.Infof("IBD started with peer %s", ibdPeer)
 
 	return true
 }
@@ -145,7 +158,6 @@ 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

@@ -2,6 +2,7 @@ package flowcontext
 
 import (
 	"errors"
+	"strings"
 	"sync/atomic"
 
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
@@ -9,6 +10,11 @@ import (
 	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
 )
 
+var (
+	// ErrPingTimeout signifies that a ping operation timed out.
+	ErrPingTimeout = protocolerrors.New(false, "timeout expired on ping")
+)
+
 // HandleError handles an error from a flow,
 // It sends the error to errChan if isStopping == 0 and increments isStopping
 //
@@ -18,14 +24,26 @@ 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)
 		}
-
-		log.Errorf("error from %s: %s", flowName, err)
+		if errors.Is(err, ErrPingTimeout) {
+			// Avoid printing the call stack on ping timeouts, since users get panicked and this case is not interesting
+			log.Errorf("error from %s: %s", flowName, err)
+		} else {
+			// Explain to the user that this is not a panic, but only a protocol error with a specific peer
+			logFrame := strings.Repeat("=", 52)
+			log.Errorf("Non-critical peer protocol error from %s, printing the full stack for debug purposes: \n%s\n%+v \n%s",
+				flowName, logFrame, err, logFrame)
+		}
 	}
 
 	if atomic.AddUint32(isStopping, 1) == 1 {
 		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

@@ -1,16 +1,15 @@
 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"
@@ -19,9 +18,12 @@ import (
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/id"
 )
 
-// OnBlockAddedToDAGHandler is a handler function that's triggered
-// when a block is added to the DAG
-type OnBlockAddedToDAGHandler func(block *externalapi.DomainBlock, blockInsertionResult *externalapi.BlockInsertionResult) error
+// OnNewBlockTemplateHandler is a handler function that's triggered when a new block template is available
+type OnNewBlockTemplateHandler func() 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
@@ -38,15 +40,14 @@ type FlowContext struct {
 
 	timeStarted int64
 
-	onBlockAddedToDAGHandler           OnBlockAddedToDAGHandler
-	onTransactionAddedToMempoolHandler OnTransactionAddedToMempoolHandler
+	onNewBlockTemplateHandler            OnNewBlockTemplateHandler
+	onPruningPointUTXOSetOverrideHandler OnPruningPointUTXOSetOverrideHandler
+	onTransactionAddedToMempoolHandler   OnTransactionAddedToMempoolHandler
 
-	transactionsToRebroadcastLock sync.Mutex
-	transactionsToRebroadcast     map[externalapi.DomainTransactionID]*externalapi.DomainTransaction
-	lastRebroadcastTime           time.Time
-	sharedRequestedTransactions   *transactionrelay.SharedRequestedTransactions
+	lastRebroadcastTime         time.Time
+	sharedRequestedTransactions *SharedRequestedTransactions
 
-	sharedRequestedBlocks *blockrelay.SharedRequestedBlocks
+	sharedRequestedBlocks *SharedRequestedBlocks
 
 	ibdPeer      *peerpkg.Peer
 	ibdPeerMutex sync.RWMutex
@@ -56,6 +57,12 @@ 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.
@@ -63,23 +70,46 @@ func New(cfg *config.Config, domain domain.Domain, addressManager *addressmanage
 	netAdapter *netadapter.NetAdapter, connectionManager *connmanager.ConnectionManager) *FlowContext {
 
 	return &FlowContext{
-		cfg:                         cfg,
-		netAdapter:                  netAdapter,
-		domain:                      domain,
-		addressManager:              addressManager,
-		connectionManager:           connectionManager,
-		sharedRequestedTransactions: transactionrelay.NewSharedRequestedTransactions(),
-		sharedRequestedBlocks:       blockrelay.NewSharedRequestedBlocks(),
-		peers:                       make(map[id.ID]*peerpkg.Peer),
-		transactionsToRebroadcast:   make(map[externalapi.DomainTransactionID]*externalapi.DomainTransaction),
-		orphans:                     make(map[externalapi.DomainHash]*externalapi.DomainBlock),
-		timeStarted:                 mstime.Now().UnixMilliseconds(),
+		cfg:                              cfg,
+		netAdapter:                       netAdapter,
+		domain:                           domain,
+		addressManager:                   addressManager,
+		connectionManager:                connectionManager,
+		sharedRequestedTransactions:      NewSharedRequestedTransactions(),
+		sharedRequestedBlocks:            NewSharedRequestedBlocks(),
+		peers:                            make(map[id.ID]*peerpkg.Peer),
+		orphans:                          make(map[externalapi.DomainHash]*externalapi.DomainBlock),
+		timeStarted:                      mstime.Now().UnixMilliseconds(),
+		transactionIDsToPropagate:        []*externalapi.DomainTransactionID{},
+		lastTransactionIDPropagationTime: time.Now(),
+		shutdownChan:                     make(chan struct{}),
 	}
 }
 
-// SetOnBlockAddedToDAGHandler sets the onBlockAddedToDAG handler
-func (f *FlowContext) SetOnBlockAddedToDAGHandler(onBlockAddedToDAGHandler OnBlockAddedToDAGHandler) {
-	f.onBlockAddedToDAGHandler = onBlockAddedToDAGHandler
+// 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
+}
+
+// IsNearlySynced returns whether current consensus is considered synced or close to being synced.
+func (f *FlowContext) IsNearlySynced() (bool, error) {
+	return f.Domain().Consensus().IsNearlySynced()
+}
+
+// SetOnNewBlockTemplateHandler sets the onNewBlockTemplateHandler handler
+func (f *FlowContext) SetOnNewBlockTemplateHandler(onNewBlockTemplateHandler OnNewBlockTemplateHandler) {
+	f.onNewBlockTemplateHandler = onNewBlockTemplateHandler
+}
+
+// SetOnPruningPointUTXOSetOverrideHandler sets the onPruningPointUTXOSetOverrideHandler handler
+func (f *FlowContext) SetOnPruningPointUTXOSetOverrideHandler(onPruningPointUTXOSetOverrideHandler OnPruningPointUTXOSetOverrideHandler) {
+	f.onPruningPointUTXOSetOverrideHandler = onPruningPointUTXOSetOverrideHandler
 }
 
 // SetOnTransactionAddedToMempoolHandler sets the onTransactionAddedToMempool handler

app/protocol/flowcontext/log.go

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

app/protocol/flowcontext/network.go

@@ -72,3 +72,10 @@ func (f *FlowContext) Peers() []*peerpkg.Peer {
 	}
 	return peers
 }
+
+// HasPeers returns whether there are currently active peers
+func (f *FlowContext) HasPeers() bool {
+	f.peersMutex.RLock()
+	defer f.peersMutex.RUnlock()
+	return len(f.peers) > 0
+}

app/protocol/flowcontext/orphans.go

@@ -15,12 +15,6 @@ import (
 // on: 2^orphanResolutionRange * PHANTOM K.
 const maxOrphans = 600
 
-// UnorphaningResult is the result of unorphaning a block
-type UnorphaningResult struct {
-	block                *externalapi.DomainBlock
-	blockInsertionResult *externalapi.BlockInsertionResult
-}
-
 // AddOrphan adds the block to the orphan set
 func (f *FlowContext) AddOrphan(orphanBlock *externalapi.DomainBlock) {
 	f.orphansMutex.Lock()
@@ -57,7 +51,7 @@ func (f *FlowContext) IsOrphan(blockHash *externalapi.DomainHash) bool {
 }
 
 // UnorphanBlocks removes the block from the orphan set, and remove all of the blocks that are not orphans anymore.
-func (f *FlowContext) UnorphanBlocks(rootBlock *externalapi.DomainBlock) ([]*UnorphaningResult, error) {
+func (f *FlowContext) UnorphanBlocks(rootBlock *externalapi.DomainBlock) ([]*externalapi.DomainBlock, error) {
 	f.orphansMutex.Lock()
 	defer f.orphansMutex.Unlock()
 
@@ -66,17 +60,17 @@ func (f *FlowContext) UnorphanBlocks(rootBlock *externalapi.DomainBlock) ([]*Uno
 	rootBlockHash := consensushashing.BlockHash(rootBlock)
 	processQueue := f.addChildOrphansToProcessQueue(rootBlockHash, []externalapi.DomainHash{})
 
-	var unorphaningResults []*UnorphaningResult
+	var unorphanedBlocks []*externalapi.DomainBlock
 	for len(processQueue) > 0 {
 		var orphanHash externalapi.DomainHash
 		orphanHash, processQueue = processQueue[0], processQueue[1:]
 		orphanBlock := f.orphans[orphanHash]
 
 		log.Debugf("Considering to unorphan block %s with parents %s",
-			orphanHash, orphanBlock.Header.ParentHashes())
+			orphanHash, orphanBlock.Header.DirectParents())
 
 		canBeUnorphaned := true
-		for _, orphanBlockParentHash := range orphanBlock.Header.ParentHashes() {
+		for _, orphanBlockParentHash := range orphanBlock.Header.DirectParents() {
 			orphanBlockParentInfo, err := f.domain.Consensus().GetBlockInfo(orphanBlockParentHash)
 			if err != nil {
 				return nil, err
@@ -90,21 +84,18 @@ func (f *FlowContext) UnorphanBlocks(rootBlock *externalapi.DomainBlock) ([]*Uno
 			}
 		}
 		if canBeUnorphaned {
-			blockInsertionResult, unorphaningSucceeded, err := f.unorphanBlock(orphanHash)
+			unorphaningSucceeded, err := f.unorphanBlock(orphanHash)
 			if err != nil {
 				return nil, err
 			}
 			if unorphaningSucceeded {
-				unorphaningResults = append(unorphaningResults, &UnorphaningResult{
-					block:                orphanBlock,
-					blockInsertionResult: blockInsertionResult,
-				})
+				unorphanedBlocks = append(unorphanedBlocks, orphanBlock)
 				processQueue = f.addChildOrphansToProcessQueue(&orphanHash, processQueue)
 			}
 		}
 	}
 
-	return unorphaningResults, nil
+	return unorphanedBlocks, nil
 }
 
 // addChildOrphansToProcessQueue finds all child orphans of `blockHash`
@@ -133,7 +124,7 @@ 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.ParentHashes() {
+		for _, orphanBlockParentHash := range orphanBlock.Header.DirectParents() {
 			if orphanBlockParentHash.Equal(blockHash) {
 				childOrphans = append(childOrphans, orphanHash)
 				break
@@ -143,24 +134,24 @@ func (f *FlowContext) findChildOrphansOfBlock(blockHash *externalapi.DomainHash)
 	return childOrphans
 }
 
-func (f *FlowContext) unorphanBlock(orphanHash externalapi.DomainHash) (*externalapi.BlockInsertionResult, bool, error) {
+func (f *FlowContext) unorphanBlock(orphanHash externalapi.DomainHash) (bool, error) {
 	orphanBlock, ok := f.orphans[orphanHash]
 	if !ok {
-		return nil, false, errors.Errorf("attempted to unorphan a non-orphan block %s", orphanHash)
+		return false, errors.Errorf("attempted to unorphan a non-orphan block %s", orphanHash)
 	}
 	delete(f.orphans, orphanHash)
 
-	blockInsertionResult, err := f.domain.Consensus().ValidateAndInsertBlock(orphanBlock)
+	err := f.domain.Consensus().ValidateAndInsertBlock(orphanBlock, true)
 	if err != nil {
 		if errors.As(err, &ruleerrors.RuleError{}) {
 			log.Warnf("Validation failed for orphan block %s: %s", orphanHash, err)
-			return nil, false, nil
+			return false, nil
 		}
-		return nil, false, err
+		return false, err
 	}
 
 	log.Infof("Unorphaned block %s", orphanHash)
-	return blockInsertionResult, true, nil
+	return true, nil
 }
 
 // GetOrphanRoots returns the roots of the missing ancestors DAG of the given orphan
@@ -201,7 +192,7 @@ func (f *FlowContext) GetOrphanRoots(orphan *externalapi.DomainHash) ([]*externa
 			continue
 		}
 
-		for _, parent := range block.Header.ParentHashes() {
+		for _, parent := range block.Header.DirectParents() {
 			if !addedToQueueSet.Contains(parent) {
 				queue = append(queue, parent)
 				addedToQueueSet.Add(parent)

app/protocol/flowcontext/shared_requested_blocks.go

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

app/protocol/flowcontext/shared_requested_transactions.go

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

app/protocol/flowcontext/should_mine.go

@@ -1,43 +0,0 @@
-package flowcontext
-
-import "github.com/kaspanet/kaspad/util/mstime"
-
-const (
-	maxSelectedParentTimeDiffToAllowMiningInMilliSeconds = 60 * 60 * 1000 // 1 Hour
-)
-
-// ShouldMine returns whether it's ok to use block template from this node
-// for mining purposes.
-func (f *FlowContext) ShouldMine() (bool, error) {
-	peers := f.Peers()
-	if len(peers) == 0 {
-		log.Debugf("The node is not connected, so ShouldMine returns false")
-		return false, nil
-	}
-
-	if f.IsIBDRunning() {
-		log.Debugf("IBD is running, so ShouldMine returns false")
-		return false, nil
-	}
-
-	virtualSelectedParent, err := f.domain.Consensus().GetVirtualSelectedParent()
-	if err != nil {
-		return false, err
-	}
-
-	virtualSelectedParentHeader, err := f.domain.Consensus().GetBlockHeader(virtualSelectedParent)
-	if err != nil {
-		return false, err
-	}
-
-	now := mstime.Now().UnixMilliseconds()
-	if now-virtualSelectedParentHeader.TimeInMilliseconds() < maxSelectedParentTimeDiffToAllowMiningInMilliSeconds {
-		log.Debugf("The selected tip timestamp is recent (%d), so ShouldMine returns true",
-			virtualSelectedParentHeader.TimeInMilliseconds())
-		return true, nil
-	}
-
-	log.Debugf("The selected tip timestamp is old (%d), so ShouldMine returns false",
-		virtualSelectedParentHeader.TimeInMilliseconds())
-	return false, nil
-}

app/protocol/flowcontext/transactions.go

@@ -4,36 +4,22 @@ 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"
 )
 
-// AddTransaction adds transaction to the mempool and propagates it.
-func (f *FlowContext) AddTransaction(tx *externalapi.DomainTransaction) error {
-	f.transactionsToRebroadcastLock.Lock()
-	defer f.transactionsToRebroadcastLock.Unlock()
+// TransactionIDPropagationInterval is the interval between transaction IDs propagations
+const TransactionIDPropagationInterval = 500 * time.Millisecond
 
-	err := f.Domain().MiningManager().ValidateAndInsertTransaction(tx, false)
+// AddTransaction adds transaction to the mempool and propagates it.
+func (f *FlowContext) AddTransaction(tx *externalapi.DomainTransaction, allowOrphan bool) error {
+	acceptedTransactions, err := f.Domain().MiningManager().ValidateAndInsertTransaction(tx, true, allowOrphan)
 	if err != nil {
 		return err
 	}
 
-	transactionID := consensushashing.TransactionID(tx)
-	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))
-	}
+	acceptedTransactionIDs := consensushashing.TransactionIDs(acceptedTransactions)
+	return f.EnqueueTransactionIDsForPropagation(acceptedTransactionIDs)
 }
 
 func (f *FlowContext) shouldRebroadcastTransactions() bool {
@@ -41,22 +27,9 @@ 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() *transactionrelay.SharedRequestedTransactions {
+func (f *FlowContext) SharedRequestedTransactions() *SharedRequestedTransactions {
 	return f.sharedRequestedTransactions
 }
 
@@ -67,3 +40,42 @@ 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/blockrelay/block_locator.go

@@ -1,29 +0,0 @@
-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_pruning_point_hash_requests.go

@@ -1,51 +0,0 @@
-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_request_pruning_point_utxo_set_and_block.go

@@ -1,144 +0,0 @@
-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

@@ -1,567 +0,0 @@
-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"
-	"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"
-)
-
-func (flow *handleRelayInvsFlow) runIBDIfNotRunning(highHash *externalapi.DomainHash) error {
-	wasIBDNotRunning := flow.TrySetIBDRunning(flow.peer)
-	if !wasIBDNotRunning {
-		log.Debugf("IBD is already running")
-		return nil
-	}
-	defer flow.UnsetIBDRunning()
-
-	log.Debugf("IBD started with peer %s and highHash %s", flow.peer, highHash)
-
-	log.Debugf("Syncing headers up to %s", highHash)
-	headersSynced, err := flow.syncHeaders(highHash)
-	if err != nil {
-		return err
-	}
-	if !headersSynced {
-		log.Debugf("Aborting IBD because the headers failed to sync")
-		return nil
-	}
-	log.Debugf("Finished syncing headers up to %s", highHash)
-
-	log.Debugf("Syncing the current pruning point UTXO set")
-	syncedPruningPointUTXOSetSuccessfully, err := flow.syncPruningPointUTXOSet()
-	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)
-
-	return nil
-}
-
-// syncHeaders attempts to sync headers from the peer. This method may fail
-// 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
-	}
-
-	// If the highHash has not been received, the peer is misbehaving
-	highHashBlockInfo, err := flow.Domain().Consensus().GetBlockInfo(highHash)
-	if err != nil {
-		return false, err
-	}
-	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 *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)
-	blockLocator, err := flow.Domain().Consensus().CreateFullHeadersSelectedChainBlockLocator()
-	if err != nil {
-		return nil, false, err
-	}
-
-	for {
-		highestHash, highestHashFound, err := flow.fetchHighestHash(targetHash, blockLocator)
-		if err != nil {
-			return nil, false, err
-		}
-		if !highestHashFound {
-			return nil, false, nil
-		}
-		highestHashIndex, err := flow.findHighestHashIndex(highestHash, blockLocator)
-		if err != nil {
-			return nil, false, err
-		}
-
-		if highestHashIndex == 0 ||
-			// If the block locator contains only two adjacent chain blocks, the
-			// syncer will always find the same highest chain block, so to avoid
-			// an endless loop, we explicitly stop the loop in such situation.
-			(len(blockLocator) == 2 && highestHashIndex == 1) {
-
-			return highestHash, true, nil
-		}
-
-		locatorHashAboveHighestHash := highestHash
-		if highestHashIndex > 0 {
-			locatorHashAboveHighestHash = blockLocator[highestHashIndex-1]
-		}
-
-		blockLocator, err = flow.nextBlockLocator(highestHash, locatorHashAboveHighestHash)
-		if err != nil {
-			return nil, false, err
-		}
-	}
-}
-
-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 {
-		if errors.Is(model.ErrBlockNotInSelectedParentChain, err) {
-			return nil, err
-		}
-		log.Debugf("Headers selected parent chain moved since findHighestSharedBlockHash - " +
-			"restarting with full block locator")
-		blockLocator, err = flow.Domain().Consensus().CreateFullHeadersSelectedChainBlockLocator()
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return blockLocator, nil
-}
-
-func (flow *handleRelayInvsFlow) findHighestHashIndex(
-	highestHash *externalapi.DomainHash, blockLocator externalapi.BlockLocator) (int, error) {
-
-	highestHashIndex := 0
-	highestHashIndexFound := false
-	for i, blockLocatorHash := range blockLocator {
-		if highestHash.Equal(blockLocatorHash) {
-			highestHashIndex = i
-			highestHashIndexFound = true
-			break
-		}
-	}
-	if !highestHashIndexFound {
-		return 0, protocolerrors.Errorf(true, "highest hash %s "+
-			"returned from peer %s is not in the original blockLocator", highestHash, flow.peer)
-	}
-	log.Debugf("The index of the highest hash in the original "+
-		"blockLocator sent to %s is %d", flow.peer, highestHashIndex)
-
-	return highestHashIndex, nil
-}
-
-// 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 *handleRelayInvsFlow) fetchHighestHash(
-	targetHash *externalapi.DomainHash, blockLocator externalapi.BlockLocator) (*externalapi.DomainHash, bool, error) {
-
-	ibdBlockLocatorMessage := appmessage.NewMsgIBDBlockLocator(targetHash, blockLocator)
-	err := flow.outgoingRoute.Enqueue(ibdBlockLocatorMessage)
-	if err != nil {
-		return nil, false, err
-	}
-	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
-	if err != nil {
-		return nil, false, err
-	}
-	switch message := message.(type) {
-	case *appmessage.MsgIBDBlockLocatorHighestHash:
-		highestHash := message.HighestHash
-		log.Debugf("The highest hash the peer %s knows is %s", flow.peer, highestHash)
-
-		return highestHash, true, nil
-	case *appmessage.MsgIBDBlockLocatorHighestHashNotFound:
-		log.Debugf("Peer %s does not know any block within our blockLocator. "+
-			"This should only happen if there's a DAG split deeper than the pruning point.", flow.peer)
-		return nil, false, nil
-	default:
-		return nil, false, protocolerrors.Errorf(true, "received unexpected message type. "+
-			"expected: %s, got: %s", appmessage.CmdIBDBlockLocatorHighestHash, message.Command())
-	}
-}
-
-func (flow *handleRelayInvsFlow) downloadHeaders(highestSharedBlockHash *externalapi.DomainHash,
-	highHash *externalapi.DomainHash) error {
-
-	err := flow.sendRequestHeaders(highestSharedBlockHash, highHash)
-	if err != nil {
-		return err
-	}
-
-	// 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-downloadHeaders", func() {
-		for {
-			blockHeadersMessage, doneIBD, err := flow.receiveHeaders()
-			if err != nil {
-				errChan <- err
-				return
-			}
-			if doneIBD {
-				close(blockHeadersMessageChan)
-				return
-			}
-
-			blockHeadersMessageChan <- blockHeadersMessage
-
-			err = flow.outgoingRoute.Enqueue(appmessage.NewMsgRequestNextHeaders())
-			if err != nil {
-				errChan <- err
-				return
-			}
-		}
-	})
-
-	for {
-		select {
-		case blockHeadersMessage, ok := <-blockHeadersMessageChan:
-			if !ok {
-				return nil
-			}
-			for _, header := range blockHeadersMessage.BlockHeaders {
-				err = flow.processHeader(header)
-				if err != nil {
-					return err
-				}
-			}
-		case err := <-errChan:
-			return err
-		}
-	}
-}
-
-func (flow *handleRelayInvsFlow) sendRequestHeaders(highestSharedBlockHash *externalapi.DomainHash,
-	peerSelectedTipHash *externalapi.DomainHash) error {
-
-	msgGetBlockInvs := appmessage.NewMsgRequstHeaders(highestSharedBlockHash, peerSelectedTipHash)
-	return flow.outgoingRoute.Enqueue(msgGetBlockInvs)
-}
-
-func (flow *handleRelayInvsFlow) receiveHeaders() (msgIBDBlock *appmessage.BlockHeadersMessage, doneIBD bool, err error) {
-	message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
-	if err != nil {
-		return nil, false, err
-	}
-	switch message := message.(type) {
-	case *appmessage.BlockHeadersMessage:
-		return message, false, nil
-	case *appmessage.MsgDoneHeaders:
-		return nil, true, nil
-	default:
-		return nil, false,
-			protocolerrors.Errorf(true, "received unexpected message type. "+
-				"expected: %s or %s, got: %s", appmessage.CmdHeader, appmessage.CmdDoneHeaders, message.Command())
-	}
-}
-
-func (flow *handleRelayInvsFlow) processHeader(msgBlockHeader *appmessage.MsgBlockHeader) error {
-	header := appmessage.BlockHeaderToDomainBlockHeader(msgBlockHeader)
-	block := &externalapi.DomainBlock{
-		Header:       header,
-		Transactions: nil,
-	}
-
-	blockHash := consensushashing.BlockHash(block)
-	blockInfo, err := flow.Domain().Consensus().GetBlockInfo(blockHash)
-	if err != nil {
-		return err
-	}
-	if blockInfo.Exists {
-		log.Debugf("Block header %s is already in the DAG. Skipping...", blockHash)
-		return nil
-	}
-	_, err = flow.Domain().Consensus().ValidateAndInsertBlock(block)
-	if err != nil {
-		if !errors.As(err, &ruleerrors.RuleError{}) {
-			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 protocolerrors.Wrapf(true, err, "got invalid block header %s during IBD", blockHash)
-		}
-	}
-
-	return nil
-}
-
-func (flow *handleRelayInvsFlow) syncPruningPointUTXOSet() (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()
-
-	receivedChunkCount := 0
-	receivedUTXOCount := 0
-	for {
-		message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
-		if err != nil {
-			return false, err
-		}
-
-		switch message := message.(type) {
-		case *appmessage.MsgPruningPointUTXOSetChunk:
-			receivedUTXOCount += len(message.OutpointAndUTXOEntryPairs)
-			domainOutpointAndUTXOEntryPairs :=
-				appmessage.OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs(message.OutpointAndUTXOEntryPairs)
-
-			err := flow.Domain().Consensus().AppendImportedPruningPointUTXOs(domainOutpointAndUTXOEntryPairs)
-			if err != nil {
-				return false, err
-			}
-
-			receivedChunkCount++
-			if receivedChunkCount%ibdBatchSize == 0 {
-				log.Debugf("Received %d UTXO set chunks so far, totaling in %d UTXOs",
-					receivedChunkCount, receivedUTXOCount)
-
-				requestNextPruningPointUTXOSetChunkMessage := appmessage.NewMsgRequestNextPruningPointUTXOSetChunk()
-				err := flow.outgoingRoute.Enqueue(requestNextPruningPointUTXOSetChunkMessage)
-				if err != nil {
-					return false, err
-				}
-			}
-
-		case *appmessage.MsgDonePruningPointUTXOSetChunks:
-			log.Infof("Finished receiving the UTXO set. Total UTXOs: %d", receivedUTXOCount)
-			return true, nil
-
-		case *appmessage.MsgUnexpectedPruningPoint:
-			log.Infof("Could not receive the next UTXO chunk because the pruning point %s "+
-				"is no longer the pruning point of peer %s", pruningPointHash, flow.peer)
-			return false, nil
-
-		default:
-			return false, protocolerrors.Errorf(true, "received unexpected message type. "+
-				"expected: %s or %s or %s, got: %s", appmessage.CmdPruningPointUTXOSetChunk,
-				appmessage.CmdDonePruningPointUTXOSetChunks, appmessage.CmdUnexpectedPruningPoint, message.Command(),
-			)
-		}
-	}
-}
-
-func (flow *handleRelayInvsFlow) syncMissingBlockBodies(highHash *externalapi.DomainHash) error {
-	hashes, err := flow.Domain().Consensus().GetMissingBlockBodyHashes(highHash)
-	if err != nil {
-		return err
-	}
-	if len(hashes) == 0 {
-		// Blocks can be inserted inside the DAG during IBD if those were requested before IBD started.
-		// In rare cases, all the IBD blocks might be already inserted by the time we reach this point.
-		// In these cases - GetMissingBlockBodyHashes would return an empty array.
-		log.Debugf("No missing block body hashes found.")
-		return nil
-	}
-
-	for offset := 0; offset < len(hashes); offset += ibdBatchSize {
-		var hashesToRequest []*externalapi.DomainHash
-		if offset+ibdBatchSize < len(hashes) {
-			hashesToRequest = hashes[offset : offset+ibdBatchSize]
-		} else {
-			hashesToRequest = hashes[offset:]
-		}
-
-		err := flow.outgoingRoute.Enqueue(appmessage.NewMsgRequestIBDBlocks(hashesToRequest))
-		if err != nil {
-			return err
-		}
-
-		for _, expectedHash := range hashesToRequest {
-			message, err := flow.dequeueIncomingMessageAndSkipInvs(common.DefaultTimeout)
-			if err != nil {
-				return err
-			}
-
-			msgIBDBlock, ok := message.(*appmessage.MsgIBDBlock)
-			if !ok {
-				return protocolerrors.Errorf(true, "received unexpected message type. "+
-					"expected: %s, got: %s", appmessage.CmdIBDBlock, message.Command())
-			}
-
-			block := appmessage.MsgBlockToDomainBlock(msgIBDBlock.MsgBlock)
-			blockHash := consensushashing.BlockHash(block)
-			if !expectedHash.Equal(blockHash) {
-				return protocolerrors.Errorf(true, "expected block %s but got %s", expectedHash, blockHash)
-			}
-
-			blockInsertionResult, err := flow.Domain().Consensus().ValidateAndInsertBlock(block)
-			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)
-					continue
-				}
-				return protocolerrors.ConvertToBanningProtocolErrorIfRuleError(err, "invalid block %s", blockHash)
-			}
-			err = flow.OnNewBlock(block, blockInsertionResult)
-			if err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-// dequeueIncomingMessageAndSkipInvs is a convenience method to be used during
-// IBD. Inv messages are expected to arrive at any given moment, but should be
-// ignored while we're in IBD
-func (flow *handleRelayInvsFlow) dequeueIncomingMessageAndSkipInvs(timeout time.Duration) (appmessage.Message, error) {
-	for {
-		message, err := flow.incomingRoute.DequeueWithTimeout(timeout)
-		if err != nil {
-			return nil, err
-		}
-		if _, ok := message.(*appmessage.MsgInvRelayBlock); !ok {
-			return message, nil
-		}
-	}
-}

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 handshake protocol - It sends a version message and waits for an incoming
+// HandleHandshake sets up the new_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,
@@ -98,7 +98,7 @@ func HandleHandshake(context HandleHandshakeContext, netConnection *netadapter.N
 }
 
 // Handshake is different from other flows, since in it should forward router.ErrRouteClosed to errChan
-// Therefore we implement a separate handleError for handshake
+// Therefore we implement a separate handleError for new_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 +107,7 @@ 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.Get(logger.SubsystemTags.PROT)
+var log = logger.RegisterSubSystem("PROT")
 var spawn = panics.GoroutineWrapperFunc(log)

app/protocol/flows/handshake/receiveversion.go

@@ -7,6 +7,7 @@ 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 (
@@ -17,7 +18,9 @@ var (
 
 	// minAcceptableProtocolVersion is the lowest protocol version that a
 	// connected peer may support.
-	minAcceptableProtocolVersion = appmessage.ProtocolVersion
+	minAcceptableProtocolVersion = uint32(5)
+
+	maxAcceptableProtocolVersion = uint32(5)
 )
 
 type receiveVersionFlow struct {
@@ -97,7 +100,12 @@ func (flow *receiveVersionFlow) start() (*appmessage.NetAddress, error) {
 		return nil, protocolerrors.New(false, "incompatible subnetworks")
 	}
 
-	flow.peer.UpdateFieldsFromMsgVersion(msgVersion)
+	if flow.Config().ProtocolVersion > maxAcceptableProtocolVersion {
+		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

@@ -7,6 +7,7 @@ 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 (
@@ -56,15 +57,18 @@ 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().ActiveNetParams.Name, subnetworkID, flow.Config().ProtocolVersion)
 	msg.AddUserAgent(userAgentName, userAgentVersion, flow.Config().UserAgentComments...)
 
 	// Advertise the services flag
 	msg.Services = defaultServices
 
 	// Advertise our max supported protocol version.
-	msg.ProtocolVersion = appmessage.ProtocolVersion
+	msg.ProtocolVersion = flow.Config().ProtocolVersion
 
 	// Advertise if inv messages for transactions are desired.
 	msg.DisableRelayTx = flow.Config().BlocksOnly

app/protocol/flows/ready/log.go

@@ -0,0 +1,9 @@
+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

@@ -0,0 +1,56 @@
+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/v5/blockrelay/batch_size_test.go

@@ -0,0 +1,16 @@
+package blockrelay
+
+import (
+	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
+	"testing"
+)
+
+func TestIBDBatchSizeLessThanRouteCapacity(t *testing.T) {
+	// The `ibdBatchSize` constant must be equal at both syncer and syncee. Therefore, we do not want
+	// to set it to `router.DefaultMaxMessages` to avoid confusion and human errors.
+	// However, nonetheless we must enforce that it does not exceed `router.DefaultMaxMessages`
+	if ibdBatchSize >= router.DefaultMaxMessages {
+		t.Fatalf("IBD batch size (%d) must be smaller than router.DefaultMaxMessages (%d)",
+			ibdBatchSize, router.DefaultMaxMessages)
+	}
+}

app/protocol/flows/v5/blockrelay/block_locator.go

@@ -0,0 +1,33 @@
+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(highHash *externalapi.DomainHash, limit uint32) error {
+	msgGetBlockLocator := appmessage.NewMsgRequestBlockLocator(highHash, limit)
+	return flow.outgoingRoute.Enqueue(msgGetBlockLocator)
+}
+
+func (flow *handleRelayInvsFlow) receiveBlockLocator() (blockLocatorHashes []*externalapi.DomainHash, err error) {
+	for {
+		message, err := flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
+		if err != nil {
+			return nil, err
+		}
+
+		switch message := message.(type) {
+		case *appmessage.MsgInvRelayBlock:
+			flow.invsQueue = append(flow.invsQueue, invRelayBlock{Hash: message.Hash, IsOrphanRoot: false})
+		case *appmessage.MsgBlockLocator:
+			return message.BlockLocatorHashes, nil
+		default:
+			return nil,
+				protocolerrors.Errorf(true, "received unexpected message type. "+
+					"expected: %s, got: %s", appmessage.CmdBlockLocator, message.Command())
+		}
+	}
+}

app/protocol/flows/v5/blockrelay/handle_ibd_block_locator.go

@@ -33,7 +33,7 @@ func HandleIBDBlockLocator(context HandleIBDBlockLocatorContext, incomingRoute *
 		if err != nil {
 			return err
 		}
-		if !blockInfo.Exists {
+		if !blockInfo.HasHeader() {
 			return protocolerrors.Errorf(true, "received IBDBlockLocator "+
 				"with an unknown targetHash %s", targetHash)
 		}
@@ -44,7 +44,9 @@ 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.HasBody() {
 				continue
 			}
 

app/protocol/flows/v5/blockrelay/handle_ibd_block_requests.go

@@ -4,7 +4,6 @@ import (
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"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"
 	"github.com/pkg/errors"
 )
@@ -28,18 +27,15 @@ func HandleIBDBlockRequests(context HandleIBDBlockRequestsContext, incomingRoute
 		log.Debugf("Got request for %d ibd blocks", len(msgRequestIBDBlocks.Hashes))
 		for i, hash := range msgRequestIBDBlocks.Hashes {
 			// Fetch the block from the database.
-			blockInfo, err := context.Domain().Consensus().GetBlockInfo(hash)
-			if err != nil {
-				return err
-			}
-			if !blockInfo.Exists || blockInfo.BlockStatus == externalapi.StatusHeaderOnly {
-				return protocolerrors.Errorf(true, "block %s not found", hash)
-			}
-			block, err := context.Domain().Consensus().GetBlock(hash)
+			block, found, err := context.Domain().Consensus().GetBlock(hash)
 			if err != nil {
 				return errors.Wrapf(err, "unable to fetch requested block hash %s", hash)
 			}
 
+			if !found {
+				return protocolerrors.Errorf(false, "IBD block %s not found", hash)
+			}
+
 			// TODO (Partial nodes): Convert block to partial block if needed
 
 			blockMessage := appmessage.DomainBlockToMsgBlock(block)
@@ -48,7 +44,7 @@ func HandleIBDBlockRequests(context HandleIBDBlockRequestsContext, incomingRoute
 			if err != nil {
 				return err
 			}
-			log.Debugf("sent %d out of %d", i, len(msgRequestIBDBlocks.Hashes))
+			log.Debugf("sent %d out of %d", i+1, len(msgRequestIBDBlocks.Hashes))
 		}
 	}
 }

app/protocol/flows/v5/blockrelay/handle_ibd_request_chain_block_locator.go

@@ -0,0 +1,85 @@
+package blockrelay
+
+import (
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"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/infrastructure/network/netadapter/router"
+	"github.com/pkg/errors"
+)
+
+// RequestIBDChainBlockLocatorContext is the interface for the context needed for the HandleRequestBlockLocator flow.
+type RequestIBDChainBlockLocatorContext interface {
+	Domain() domain.Domain
+}
+
+type handleRequestIBDChainBlockLocatorFlow struct {
+	RequestIBDChainBlockLocatorContext
+	incomingRoute, outgoingRoute *router.Route
+}
+
+// HandleRequestIBDChainBlockLocator handles getBlockLocator messages
+func HandleRequestIBDChainBlockLocator(context RequestIBDChainBlockLocatorContext, incomingRoute *router.Route,
+	outgoingRoute *router.Route) error {
+
+	flow := &handleRequestIBDChainBlockLocatorFlow{
+		RequestIBDChainBlockLocatorContext: context,
+		incomingRoute:                      incomingRoute,
+		outgoingRoute:                      outgoingRoute,
+	}
+	return flow.start()
+}
+
+func (flow *handleRequestIBDChainBlockLocatorFlow) start() error {
+	for {
+		highHash, lowHash, err := flow.receiveRequestIBDChainBlockLocator()
+		if err != nil {
+			return err
+		}
+		log.Debugf("Received getIBDChainBlockLocator with highHash: %s, lowHash: %s", highHash, lowHash)
+
+		var locator externalapi.BlockLocator
+		if highHash == nil || lowHash == nil {
+			locator, err = flow.Domain().Consensus().CreateFullHeadersSelectedChainBlockLocator()
+		} else {
+			locator, err = flow.Domain().Consensus().CreateHeadersSelectedChainBlockLocator(lowHash, highHash)
+			if errors.Is(model.ErrBlockNotInSelectedParentChain, err) {
+				// The chain has been modified, signal it by sending an empty locator
+				locator, err = externalapi.BlockLocator{}, nil
+			}
+		}
+
+		if err != nil {
+			log.Debugf("Received error from CreateHeadersSelectedChainBlockLocator: %s", err)
+			return protocolerrors.Errorf(true, "couldn't build a block "+
+				"locator between %s and %s", lowHash, highHash)
+		}
+
+		err = flow.sendIBDChainBlockLocator(locator)
+		if err != nil {
+			return err
+		}
+	}
+}
+
+func (flow *handleRequestIBDChainBlockLocatorFlow) receiveRequestIBDChainBlockLocator() (highHash, lowHash *externalapi.DomainHash, err error) {
+
+	message, err := flow.incomingRoute.Dequeue()
+	if err != nil {
+		return nil, nil, err
+	}
+	msgGetBlockLocator := message.(*appmessage.MsgRequestIBDChainBlockLocator)
+
+	return msgGetBlockLocator.HighHash, msgGetBlockLocator.LowHash, nil
+}
+
+func (flow *handleRequestIBDChainBlockLocatorFlow) sendIBDChainBlockLocator(locator externalapi.BlockLocator) error {
+	msgIBDChainBlockLocator := appmessage.NewMsgIBDChainBlockLocator(locator)
+	err := flow.outgoingRoute.Enqueue(msgIBDChainBlockLocator)
+	if err != nil {
+		return err
+	}
+	return nil
+}