Merge pull request #20234 from rjl493456442/newtxhashes_2

core, eth: announce based transaction propagation

core/tx_pool.go

@@ -18,7 +18,6 @@ package core
 
 import (
 	"errors"
-	"fmt"
 	"math"
 	"math/big"
 	"sort"
@@ -53,6 +52,10 @@ const (
 )
 
 var (
+	// ErrAlreadyKnown is returned if the transactions is already contained
+	// within the pool.
+	ErrAlreadyKnown = errors.New("already known")
+
 	// ErrInvalidSender is returned if the transaction contains an invalid signature.
 	ErrInvalidSender = errors.New("invalid sender")
 
@@ -579,7 +582,7 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (replaced bool, err e
 	if pool.all.Get(hash) != nil {
 		log.Trace("Discarding already known transaction", "hash", hash)
 		knownTxMeter.Mark(1)
-		return false, fmt.Errorf("known transaction: %x", hash)
+		return false, ErrAlreadyKnown
 	}
 	// If the transaction fails basic validation, discard it
 	if err := pool.validateTx(tx, local); err != nil {
@@ -786,7 +789,7 @@ func (pool *TxPool) addTxs(txs []*types.Transaction, local, sync bool) []error {
 	for i, tx := range txs {
 		// If the transaction is known, pre-set the error slot
 		if pool.all.Get(tx.Hash()) != nil {
-			errs[i] = fmt.Errorf("known transaction: %x", tx.Hash())
+			errs[i] = ErrAlreadyKnown
 			knownTxMeter.Mark(1)
 			continue
 		}
@@ -864,6 +867,12 @@ func (pool *TxPool) Get(hash common.Hash) *types.Transaction {
 	return pool.all.Get(hash)
 }
 
+// Has returns an indicator whether txpool has a transaction cached with the
+// given hash.
+func (pool *TxPool) Has(hash common.Hash) bool {
+	return pool.all.Get(hash) != nil
+}
+
 // removeTx removes a single transaction from the queue, moving all subsequent
 // transactions back to the future queue.
 func (pool *TxPool) removeTx(hash common.Hash, outofbound bool) {

eth/downloader/peer.go

@@ -470,7 +470,7 @@ func (ps *peerSet) HeaderIdlePeers() ([]*peerConnection, int) {
 		defer p.lock.RUnlock()
 		return p.headerThroughput
 	}
-	return ps.idlePeers(62, 64, idle, throughput)
+	return ps.idlePeers(62, 65, idle, throughput)
 }
 
 // BodyIdlePeers retrieves a flat list of all the currently body-idle peers within
@@ -484,7 +484,7 @@ func (ps *peerSet) BodyIdlePeers() ([]*peerConnection, int) {
 		defer p.lock.RUnlock()
 		return p.blockThroughput
 	}
-	return ps.idlePeers(62, 64, idle, throughput)
+	return ps.idlePeers(62, 65, idle, throughput)
 }
 
 // ReceiptIdlePeers retrieves a flat list of all the currently receipt-idle peers
@@ -498,7 +498,7 @@ func (ps *peerSet) ReceiptIdlePeers() ([]*peerConnection, int) {
 		defer p.lock.RUnlock()
 		return p.receiptThroughput
 	}
-	return ps.idlePeers(63, 64, idle, throughput)
+	return ps.idlePeers(63, 65, idle, throughput)
 }
 
 // NodeDataIdlePeers retrieves a flat list of all the currently node-data-idle
@@ -512,7 +512,7 @@ func (ps *peerSet) NodeDataIdlePeers() ([]*peerConnection, int) {
 		defer p.lock.RUnlock()
 		return p.stateThroughput
 	}
-	return ps.idlePeers(63, 64, idle, throughput)
+	return ps.idlePeers(63, 65, idle, throughput)
 }
 
 // idlePeers retrieves a flat list of all currently idle peers satisfying the

eth/fetcher/fetcher_test.go → eth/fetcher/block_fetcher_test.go

@@ -76,7 +76,7 @@ func makeChain(n int, seed byte, parent *types.Block) ([]common.Hash, map[common
 
 // fetcherTester is a test simulator for mocking out local block chain.
 type fetcherTester struct {
-	fetcher *Fetcher
+	fetcher *BlockFetcher
 
 	hashes []common.Hash                // Hash chain belonging to the tester
 	blocks map[common.Hash]*types.Block // Blocks belonging to the tester
@@ -92,7 +92,7 @@ func newTester() *fetcherTester {
 		blocks: map[common.Hash]*types.Block{genesis.Hash(): genesis},
 		drops:  make(map[string]bool),
 	}
-	tester.fetcher = New(tester.getBlock, tester.verifyHeader, tester.broadcastBlock, tester.chainHeight, tester.insertChain, tester.dropPeer)
+	tester.fetcher = NewBlockFetcher(tester.getBlock, tester.verifyHeader, tester.broadcastBlock, tester.chainHeight, tester.insertChain, tester.dropPeer)
 	tester.fetcher.Start()
 
 	return tester

eth/fetcher/metrics.go

-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-// Contains the metrics collected by the fetcher.
-
-package fetcher
-
-import (
-	"github.com/ethereum/go-ethereum/metrics"
-)
-
-var (
-	propAnnounceInMeter   = metrics.NewRegisteredMeter("eth/fetcher/prop/announces/in", nil)
-	propAnnounceOutTimer  = metrics.NewRegisteredTimer("eth/fetcher/prop/announces/out", nil)
-	propAnnounceDropMeter = metrics.NewRegisteredMeter("eth/fetcher/prop/announces/drop", nil)
-	propAnnounceDOSMeter  = metrics.NewRegisteredMeter("eth/fetcher/prop/announces/dos", nil)
-
-	propBroadcastInMeter   = metrics.NewRegisteredMeter("eth/fetcher/prop/broadcasts/in", nil)
-	propBroadcastOutTimer  = metrics.NewRegisteredTimer("eth/fetcher/prop/broadcasts/out", nil)
-	propBroadcastDropMeter = metrics.NewRegisteredMeter("eth/fetcher/prop/broadcasts/drop", nil)
-	propBroadcastDOSMeter  = metrics.NewRegisteredMeter("eth/fetcher/prop/broadcasts/dos", nil)
-
-	headerFetchMeter = metrics.NewRegisteredMeter("eth/fetcher/fetch/headers", nil)
-	bodyFetchMeter   = metrics.NewRegisteredMeter("eth/fetcher/fetch/bodies", nil)
-
-	headerFilterInMeter  = metrics.NewRegisteredMeter("eth/fetcher/filter/headers/in", nil)
-	headerFilterOutMeter = metrics.NewRegisteredMeter("eth/fetcher/filter/headers/out", nil)
-	bodyFilterInMeter    = metrics.NewRegisteredMeter("eth/fetcher/filter/bodies/in", nil)
-	bodyFilterOutMeter   = metrics.NewRegisteredMeter("eth/fetcher/filter/bodies/out", nil)
-)

eth/handler.go

@@ -51,7 +51,7 @@ const (
 	// The number is referenced from the size of tx pool.
 	txChanSize = 4096
 
-	// minimim number of peers to broadcast new blocks to
+	// minimim number of peers to broadcast entire blocks and transactions too.
 	minBroadcastPeers = 4
 )
 
@@ -78,7 +78,8 @@ type ProtocolManager struct {
 	maxPeers   int
 
 	downloader   *downloader.Downloader
-	fetcher    *fetcher.Fetcher
+	blockFetcher *fetcher.BlockFetcher
+	txFetcher    *fetcher.TxFetcher
 	peers        *peerSet
 
 	eventMux      *event.TypeMux
@@ -97,6 +98,9 @@ type ProtocolManager struct {
 	// wait group is used for graceful shutdowns during downloading
 	// and processing
 	wg sync.WaitGroup
+
+	// Test fields or hooks
+	broadcastTxAnnouncesOnly bool // Testing field, disable transaction propagation
 }
 
 // NewProtocolManager returns a new Ethereum sub protocol manager. The Ethereum sub protocol manages peers capable
@@ -187,7 +191,16 @@ func NewProtocolManager(config *params.ChainConfig, checkpoint *params.TrustedCh
 		}
 		return n, err
 	}
-	manager.fetcher = fetcher.New(blockchain.GetBlockByHash, validator, manager.BroadcastBlock, heighter, inserter, manager.removePeer)
+	manager.blockFetcher = fetcher.NewBlockFetcher(blockchain.GetBlockByHash, validator, manager.BroadcastBlock, heighter, inserter, manager.removePeer)
+
+	fetchTx := func(peer string, hashes []common.Hash) error {
+		p := manager.peers.Peer(peer)
+		if p == nil {
+			return errors.New("unknown peer")
+		}
+		return p.RequestTxs(hashes)
+	}
+	manager.txFetcher = fetcher.NewTxFetcher(txpool.Has, txpool.AddRemotes, fetchTx)
 
 	return manager, nil
 }
@@ -203,7 +216,7 @@ func (pm *ProtocolManager) makeProtocol(version uint) p2p.Protocol {
 		Version: version,
 		Length:  length,
 		Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
-			peer := pm.newPeer(int(version), p, rw)
+			peer := pm.newPeer(int(version), p, rw, pm.txpool.Get)
 			select {
 			case pm.newPeerCh <- peer:
 				pm.wg.Add(1)
@@ -235,6 +248,8 @@ func (pm *ProtocolManager) removePeer(id string) {
 
 	// Unregister the peer from the downloader and Ethereum peer set
 	pm.downloader.UnregisterPeer(id)
+	pm.txFetcher.Drop(id)
+
 	if err := pm.peers.Unregister(id); err != nil {
 		log.Error("Peer removal failed", "peer", id, "err", err)
 	}
@@ -258,7 +273,7 @@ func (pm *ProtocolManager) Start(maxPeers int) {
 
 	// start sync handlers
 	go pm.syncer()
-	go pm.txsyncLoop()
+	go pm.txsyncLoop64() // TODO(karalabe): Legacy initial tx echange, drop with eth/64.
 }
 
 func (pm *ProtocolManager) Stop() {
@@ -286,8 +301,8 @@ func (pm *ProtocolManager) Stop() {
 	log.Info("Ethereum protocol stopped")
 }
 
-func (pm *ProtocolManager) newPeer(pv int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer {
-	return newPeer(pv, p, newMeteredMsgWriter(rw))
+func (pm *ProtocolManager) newPeer(pv int, p *p2p.Peer, rw p2p.MsgReadWriter, getPooledTx func(hash common.Hash) *types.Transaction) *peer {
+	return newPeer(pv, p, rw, getPooledTx)
 }
 
 // handle is the callback invoked to manage the life cycle of an eth peer. When
@@ -311,9 +326,6 @@ func (pm *ProtocolManager) handle(p *peer) error {
 		p.Log().Debug("Ethereum handshake failed", "err", err)
 		return err
 	}
-	if rw, ok := p.rw.(*meteredMsgReadWriter); ok {
-		rw.Init(p.version)
-	}
 	// Register the peer locally
 	if err := pm.peers.Register(p); err != nil {
 		p.Log().Error("Ethereum peer registration failed", "err", err)
@@ -514,7 +526,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 				p.Log().Debug("Whitelist block verified", "number", headers[0].Number.Uint64(), "hash", want)
 			}
 			// Irrelevant of the fork checks, send the header to the fetcher just in case
-			headers = pm.fetcher.FilterHeaders(p.id, headers, time.Now())
+			headers = pm.blockFetcher.FilterHeaders(p.id, headers, time.Now())
 		}
 		if len(headers) > 0 || !filter {
 			err := pm.downloader.DeliverHeaders(p.id, headers)
@@ -567,7 +579,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 		// Filter out any explicitly requested bodies, deliver the rest to the downloader
 		filter := len(transactions) > 0 || len(uncles) > 0
 		if filter {
-			transactions, uncles = pm.fetcher.FilterBodies(p.id, transactions, uncles, time.Now())
+			transactions, uncles = pm.blockFetcher.FilterBodies(p.id, transactions, uncles, time.Now())
 		}
 		if len(transactions) > 0 || len(uncles) > 0 || !filter {
 			err := pm.downloader.DeliverBodies(p.id, transactions, uncles)
@@ -678,7 +690,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 			}
 		}
 		for _, block := range unknown {
-			pm.fetcher.Notify(p.id, block.Hash, block.Number, time.Now(), p.RequestOneHeader, p.RequestBodies)
+			pm.blockFetcher.Notify(p.id, block.Hash, block.Number, time.Now(), p.RequestOneHeader, p.RequestBodies)
 		}
 
 	case msg.Code == NewBlockMsg:
@@ -703,7 +715,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 
 		// Mark the peer as owning the block and schedule it for import
 		p.MarkBlock(request.Block.Hash())
-		pm.fetcher.Enqueue(p.id, request.Block)
+		pm.blockFetcher.Enqueue(p.id, request.Block)
 
 		// Assuming the block is importable by the peer, but possibly not yet done so,
 		// calculate the head hash and TD that the peer truly must have.
@@ -724,7 +736,59 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 			}
 		}
 
-	case msg.Code == TxMsg:
+	case msg.Code == NewPooledTransactionHashesMsg && p.version >= eth65:
+		// New transaction announcement arrived, make sure we have
+		// a valid and fresh chain to handle them
+		if atomic.LoadUint32(&pm.acceptTxs) == 0 {
+			break
+		}
+		var hashes []common.Hash
+		if err := msg.Decode(&hashes); err != nil {
+			return errResp(ErrDecode, "msg %v: %v", msg, err)
+		}
+		// Schedule all the unknown hashes for retrieval
+		for _, hash := range hashes {
+			p.MarkTransaction(hash)
+		}
+		pm.txFetcher.Notify(p.id, hashes)
+
+	case msg.Code == GetPooledTransactionsMsg && p.version >= eth65:
+		// Decode the retrieval message
+		msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
+		if _, err := msgStream.List(); err != nil {
+			return err
+		}
+		// Gather transactions until the fetch or network limits is reached
+		var (
+			hash   common.Hash
+			bytes  int
+			hashes []common.Hash
+			txs    []rlp.RawValue
+		)
+		for bytes < softResponseLimit {
+			// Retrieve the hash of the next block
+			if err := msgStream.Decode(&hash); err == rlp.EOL {
+				break
+			} else if err != nil {
+				return errResp(ErrDecode, "msg %v: %v", msg, err)
+			}
+			// Retrieve the requested transaction, skipping if unknown to us
+			tx := pm.txpool.Get(hash)
+			if tx == nil {
+				continue
+			}
+			// If known, encode and queue for response packet
+			if encoded, err := rlp.EncodeToBytes(tx); err != nil {
+				log.Error("Failed to encode transaction", "err", err)
+			} else {
+				hashes = append(hashes, hash)
+				txs = append(txs, encoded)
+				bytes += len(encoded)
+			}
+		}
+		return p.SendPooledTransactionsRLP(hashes, txs)
+
+	case msg.Code == TransactionMsg || (msg.Code == PooledTransactionsMsg && p.version >= eth65):
 		// Transactions arrived, make sure we have a valid and fresh chain to handle them
 		if atomic.LoadUint32(&pm.acceptTxs) == 0 {
 			break
@@ -741,7 +805,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 			}
 			p.MarkTransaction(tx.Hash())
 		}
-		pm.txpool.AddRemotes(txs)
+		pm.txFetcher.Enqueue(p.id, txs, msg.Code == PooledTransactionsMsg)
 
 	default:
 		return errResp(ErrInvalidMsgCode, "%v", msg.Code)
@@ -789,22 +853,50 @@ func (pm *ProtocolManager) BroadcastBlock(block *types.Block, propagate bool) {
 	}
 }
 
-// BroadcastTxs will propagate a batch of transactions to all peers which are not known to
+// BroadcastTransactions will propagate a batch of transactions to all peers which are not known to
 // already have the given transaction.
-func (pm *ProtocolManager) BroadcastTxs(txs types.Transactions) {
-	var txset = make(map[*peer]types.Transactions)
-
+func (pm *ProtocolManager) BroadcastTransactions(txs types.Transactions, propagate bool) {
+	var (
+		txset = make(map[*peer][]common.Hash)
+		annos = make(map[*peer][]common.Hash)
+	)
 	// Broadcast transactions to a batch of peers not knowing about it
+	if propagate {
 		for _, tx := range txs {
 			peers := pm.peers.PeersWithoutTx(tx.Hash())
-		for _, peer := range peers {
-			txset[peer] = append(txset[peer], tx)
+
+			// Send the block to a subset of our peers
+			transferLen := int(math.Sqrt(float64(len(peers))))
+			if transferLen < minBroadcastPeers {
+				transferLen = minBroadcastPeers
+			}
+			if transferLen > len(peers) {
+				transferLen = len(peers)
+			}
+			transfer := peers[:transferLen]
+			for _, peer := range transfer {
+				txset[peer] = append(txset[peer], tx.Hash())
 			}
 			log.Trace("Broadcast transaction", "hash", tx.Hash(), "recipients", len(peers))
 		}
-	// FIXME include this again: peers = peers[:int(math.Sqrt(float64(len(peers))))]
-	for peer, txs := range txset {
-		peer.AsyncSendTransactions(txs)
+		for peer, hashes := range txset {
+			peer.AsyncSendTransactions(hashes)
+		}
+		return
+	}
+	// Otherwise only broadcast the announcement to peers
+	for _, tx := range txs {
+		peers := pm.peers.PeersWithoutTx(tx.Hash())
+		for _, peer := range peers {
+			annos[peer] = append(annos[peer], tx.Hash())
+		}
+	}
+	for peer, hashes := range annos {
+		if peer.version >= eth65 {
+			peer.AsyncSendPooledTransactionHashes(hashes)
+		} else {
+			peer.AsyncSendTransactions(hashes)
+		}
 	}
 }
 
@@ -823,7 +915,13 @@ func (pm *ProtocolManager) txBroadcastLoop() {
 	for {
 		select {
 		case event := <-pm.txsCh:
-			pm.BroadcastTxs(event.Txs)
+			// For testing purpose only, disable propagation
+			if pm.broadcastTxAnnouncesOnly {
+				pm.BroadcastTransactions(event.Txs, false)
+				continue
+			}
+			pm.BroadcastTransactions(event.Txs, true)  // First propagate transactions to peers
+			pm.BroadcastTransactions(event.Txs, false) // Only then announce to the rest
 
 		// Err() channel will be closed when unsubscribing.
 		case <-pm.txsSub.Err():

eth/handler_test.go

@@ -495,7 +495,7 @@ func testCheckpointChallenge(t *testing.T, syncmode downloader.SyncMode, checkpo
 	if err != nil {
 		t.Fatalf("failed to create new blockchain: %v", err)
 	}
-	pm, err := NewProtocolManager(config, cht, syncmode, DefaultConfig.NetworkId, new(event.TypeMux), new(testTxPool), ethash.NewFaker(), blockchain, db, 1, nil)
+	pm, err := NewProtocolManager(config, cht, syncmode, DefaultConfig.NetworkId, new(event.TypeMux), &testTxPool{pool: make(map[common.Hash]*types.Transaction)}, ethash.NewFaker(), blockchain, db, 1, nil)
 	if err != nil {
 		t.Fatalf("failed to start test protocol manager: %v", err)
 	}
@@ -582,7 +582,7 @@ func testBroadcastBlock(t *testing.T, totalPeers, broadcastExpected int) {
 	if err != nil {
 		t.Fatalf("failed to create new blockchain: %v", err)
 	}
-	pm, err := NewProtocolManager(config, nil, downloader.FullSync, DefaultConfig.NetworkId, evmux, new(testTxPool), pow, blockchain, db, 1, nil)
+	pm, err := NewProtocolManager(config, nil, downloader.FullSync, DefaultConfig.NetworkId, evmux, &testTxPool{pool: make(map[common.Hash]*types.Transaction)}, pow, blockchain, db, 1, nil)
 	if err != nil {
 		t.Fatalf("failed to start test protocol manager: %v", err)
 	}

eth/helper_test.go

@@ -68,7 +68,7 @@ func newTestProtocolManager(mode downloader.SyncMode, blocks int, generator func
 	if _, err := blockchain.InsertChain(chain); err != nil {
 		panic(err)
 	}
-	pm, err := NewProtocolManager(gspec.Config, nil, mode, DefaultConfig.NetworkId, evmux, &testTxPool{added: newtx}, engine, blockchain, db, 1, nil)
+	pm, err := NewProtocolManager(gspec.Config, nil, mode, DefaultConfig.NetworkId, evmux, &testTxPool{added: newtx, pool: make(map[common.Hash]*types.Transaction)}, engine, blockchain, db, 1, nil)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -91,22 +91,43 @@ func newTestProtocolManagerMust(t *testing.T, mode downloader.SyncMode, blocks i
 // testTxPool is a fake, helper transaction pool for testing purposes
 type testTxPool struct {
 	txFeed event.Feed
-	pool   []*types.Transaction        // Collection of all transactions
+	pool   map[common.Hash]*types.Transaction // Hash map of collected transactions
 	added  chan<- []*types.Transaction        // Notification channel for new transactions
 
 	lock sync.RWMutex // Protects the transaction pool
 }
 
+// Has returns an indicator whether txpool has a transaction
+// cached with the given hash.
+func (p *testTxPool) Has(hash common.Hash) bool {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	return p.pool[hash] != nil
+}
+
+// Get retrieves the transaction from local txpool with given
+// tx hash.
+func (p *testTxPool) Get(hash common.Hash) *types.Transaction {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	return p.pool[hash]
+}
+
 // AddRemotes appends a batch of transactions to the pool, and notifies any
 // listeners if the addition channel is non nil
 func (p *testTxPool) AddRemotes(txs []*types.Transaction) []error {
 	p.lock.Lock()
 	defer p.lock.Unlock()
 
-	p.pool = append(p.pool, txs...)
+	for _, tx := range txs {
+		p.pool[tx.Hash()] = tx
+	}
 	if p.added != nil {
 		p.added <- txs
 	}
+	p.txFeed.Send(core.NewTxsEvent{Txs: txs})
 	return make([]error, len(txs))
 }
 
@@ -153,7 +174,7 @@ func newTestPeer(name string, version int, pm *ProtocolManager, shake bool) (*te
 	var id enode.ID
 	rand.Read(id[:])
 
-	peer := pm.newPeer(version, p2p.NewPeer(id, name, nil), net)
+	peer := pm.newPeer(version, p2p.NewPeer(id, name, nil), net, pm.txpool.Get)
 
 	// Start the peer on a new thread
 	errc := make(chan error, 1)
@@ -191,7 +212,7 @@ func (p *testPeer) handshake(t *testing.T, td *big.Int, head common.Hash, genesi
 			CurrentBlock:    head,
 			GenesisBlock:    genesis,
 		}
-	case p.version == eth64:
+	case p.version >= eth64:
 		msg = &statusData{
 			ProtocolVersion: uint32(p.version),
 			NetworkID:       DefaultConfig.NetworkId,

eth/metrics.go

-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package eth
-
-import (
-	"github.com/ethereum/go-ethereum/metrics"
-	"github.com/ethereum/go-ethereum/p2p"
-)
-
-var (
-	propTxnInPacketsMeter     = metrics.NewRegisteredMeter("eth/prop/txns/in/packets", nil)
-	propTxnInTrafficMeter     = metrics.NewRegisteredMeter("eth/prop/txns/in/traffic", nil)
-	propTxnOutPacketsMeter    = metrics.NewRegisteredMeter("eth/prop/txns/out/packets", nil)
-	propTxnOutTrafficMeter    = metrics.NewRegisteredMeter("eth/prop/txns/out/traffic", nil)
-	propHashInPacketsMeter    = metrics.NewRegisteredMeter("eth/prop/hashes/in/packets", nil)
-	propHashInTrafficMeter    = metrics.NewRegisteredMeter("eth/prop/hashes/in/traffic", nil)
-	propHashOutPacketsMeter   = metrics.NewRegisteredMeter("eth/prop/hashes/out/packets", nil)
-	propHashOutTrafficMeter   = metrics.NewRegisteredMeter("eth/prop/hashes/out/traffic", nil)
-	propBlockInPacketsMeter   = metrics.NewRegisteredMeter("eth/prop/blocks/in/packets", nil)
-	propBlockInTrafficMeter   = metrics.NewRegisteredMeter("eth/prop/blocks/in/traffic", nil)
-	propBlockOutPacketsMeter  = metrics.NewRegisteredMeter("eth/prop/blocks/out/packets", nil)
-	propBlockOutTrafficMeter  = metrics.NewRegisteredMeter("eth/prop/blocks/out/traffic", nil)
-	reqHeaderInPacketsMeter   = metrics.NewRegisteredMeter("eth/req/headers/in/packets", nil)
-	reqHeaderInTrafficMeter   = metrics.NewRegisteredMeter("eth/req/headers/in/traffic", nil)
-	reqHeaderOutPacketsMeter  = metrics.NewRegisteredMeter("eth/req/headers/out/packets", nil)
-	reqHeaderOutTrafficMeter  = metrics.NewRegisteredMeter("eth/req/headers/out/traffic", nil)
-	reqBodyInPacketsMeter     = metrics.NewRegisteredMeter("eth/req/bodies/in/packets", nil)
-	reqBodyInTrafficMeter     = metrics.NewRegisteredMeter("eth/req/bodies/in/traffic", nil)
-	reqBodyOutPacketsMeter    = metrics.NewRegisteredMeter("eth/req/bodies/out/packets", nil)
-	reqBodyOutTrafficMeter    = metrics.NewRegisteredMeter("eth/req/bodies/out/traffic", nil)
-	reqStateInPacketsMeter    = metrics.NewRegisteredMeter("eth/req/states/in/packets", nil)
-	reqStateInTrafficMeter    = metrics.NewRegisteredMeter("eth/req/states/in/traffic", nil)
-	reqStateOutPacketsMeter   = metrics.NewRegisteredMeter("eth/req/states/out/packets", nil)
-	reqStateOutTrafficMeter   = metrics.NewRegisteredMeter("eth/req/states/out/traffic", nil)
-	reqReceiptInPacketsMeter  = metrics.NewRegisteredMeter("eth/req/receipts/in/packets", nil)
-	reqReceiptInTrafficMeter  = metrics.NewRegisteredMeter("eth/req/receipts/in/traffic", nil)
-	reqReceiptOutPacketsMeter = metrics.NewRegisteredMeter("eth/req/receipts/out/packets", nil)
-	reqReceiptOutTrafficMeter = metrics.NewRegisteredMeter("eth/req/receipts/out/traffic", nil)
-	miscInPacketsMeter        = metrics.NewRegisteredMeter("eth/misc/in/packets", nil)
-	miscInTrafficMeter        = metrics.NewRegisteredMeter("eth/misc/in/traffic", nil)
-	miscOutPacketsMeter       = metrics.NewRegisteredMeter("eth/misc/out/packets", nil)
-	miscOutTrafficMeter       = metrics.NewRegisteredMeter("eth/misc/out/traffic", nil)
-)
-
-// meteredMsgReadWriter is a wrapper around a p2p.MsgReadWriter, capable of
-// accumulating the above defined metrics based on the data stream contents.
-type meteredMsgReadWriter struct {
-	p2p.MsgReadWriter     // Wrapped message stream to meter
-	version           int // Protocol version to select correct meters
-}
-
-// newMeteredMsgWriter wraps a p2p MsgReadWriter with metering support. If the
-// metrics system is disabled, this function returns the original object.
-func newMeteredMsgWriter(rw p2p.MsgReadWriter) p2p.MsgReadWriter {
-	if !metrics.Enabled {
-		return rw
-	}
-	return &meteredMsgReadWriter{MsgReadWriter: rw}
-}
-
-// Init sets the protocol version used by the stream to know which meters to
-// increment in case of overlapping message ids between protocol versions.
-func (rw *meteredMsgReadWriter) Init(version int) {
-	rw.version = version
-}
-
-func (rw *meteredMsgReadWriter) ReadMsg() (p2p.Msg, error) {
-	// Read the message and short circuit in case of an error
-	msg, err := rw.MsgReadWriter.ReadMsg()
-	if err != nil {
-		return msg, err
-	}
-	// Account for the data traffic
-	packets, traffic := miscInPacketsMeter, miscInTrafficMeter
-	switch {
-	case msg.Code == BlockHeadersMsg:
-		packets, traffic = reqHeaderInPacketsMeter, reqHeaderInTrafficMeter
-	case msg.Code == BlockBodiesMsg:
-		packets, traffic = reqBodyInPacketsMeter, reqBodyInTrafficMeter
-
-	case rw.version >= eth63 && msg.Code == NodeDataMsg:
-		packets, traffic = reqStateInPacketsMeter, reqStateInTrafficMeter
-	case rw.version >= eth63 && msg.Code == ReceiptsMsg:
-		packets, traffic = reqReceiptInPacketsMeter, reqReceiptInTrafficMeter
-
-	case msg.Code == NewBlockHashesMsg:
-		packets, traffic = propHashInPacketsMeter, propHashInTrafficMeter
-	case msg.Code == NewBlockMsg:
-		packets, traffic = propBlockInPacketsMeter, propBlockInTrafficMeter
-	case msg.Code == TxMsg:
-		packets, traffic = propTxnInPacketsMeter, propTxnInTrafficMeter
-	}
-	packets.Mark(1)
-	traffic.Mark(int64(msg.Size))
-
-	return msg, err
-}
-
-func (rw *meteredMsgReadWriter) WriteMsg(msg p2p.Msg) error {
-	// Account for the data traffic
-	packets, traffic := miscOutPacketsMeter, miscOutTrafficMeter
-	switch {
-	case msg.Code == BlockHeadersMsg:
-		packets, traffic = reqHeaderOutPacketsMeter, reqHeaderOutTrafficMeter
-	case msg.Code == BlockBodiesMsg:
-		packets, traffic = reqBodyOutPacketsMeter, reqBodyOutTrafficMeter
-
-	case rw.version >= eth63 && msg.Code == NodeDataMsg:
-		packets, traffic = reqStateOutPacketsMeter, reqStateOutTrafficMeter
-	case rw.version >= eth63 && msg.Code == ReceiptsMsg:
-		packets, traffic = reqReceiptOutPacketsMeter, reqReceiptOutTrafficMeter
-
-	case msg.Code == NewBlockHashesMsg:
-		packets, traffic = propHashOutPacketsMeter, propHashOutTrafficMeter
-	case msg.Code == NewBlockMsg:
-		packets, traffic = propBlockOutPacketsMeter, propBlockOutTrafficMeter
-	case msg.Code == TxMsg:
-		packets, traffic = propTxnOutPacketsMeter, propTxnOutTrafficMeter
-	}
-	packets.Mark(1)
-	traffic.Mark(int64(msg.Size))
-
-	// Send the packet to the p2p layer
-	return rw.MsgReadWriter.WriteMsg(msg)
-}

eth/protocol.go

@@ -33,16 +33,17 @@ import (
 const (
 	eth63 = 63
 	eth64 = 64
+	eth65 = 65
 )
 
 // protocolName is the official short name of the protocol used during capability negotiation.
 const protocolName = "eth"
 
 // ProtocolVersions are the supported versions of the eth protocol (first is primary).
-var ProtocolVersions = []uint{eth64, eth63}
+var ProtocolVersions = []uint{eth65, eth64, eth63}
 
 // protocolLengths are the number of implemented message corresponding to different protocol versions.
-var protocolLengths = map[uint]uint64{eth64: 17, eth63: 17}
+var protocolLengths = map[uint]uint64{eth65: 17, eth64: 17, eth63: 17}
 
 const protocolMaxMsgSize = 10 * 1024 * 1024 // Maximum cap on the size of a protocol message
 
@@ -50,7 +51,7 @@ const protocolMaxMsgSize = 10 * 1024 * 1024 // Maximum cap on the size of a prot
 const (
 	StatusMsg          = 0x00
 	NewBlockHashesMsg  = 0x01
-	TxMsg              = 0x02
+	TransactionMsg     = 0x02
 	GetBlockHeadersMsg = 0x03
 	BlockHeadersMsg    = 0x04
 	GetBlockBodiesMsg  = 0x05
@@ -60,6 +61,14 @@ const (
 	NodeDataMsg        = 0x0e
 	GetReceiptsMsg     = 0x0f
 	ReceiptsMsg        = 0x10
+
+	// New protocol message codes introduced in eth65
+	//
+	// Previously these message ids were used by some legacy and unsupported
+	// eth protocols, reown them here.
+	NewPooledTransactionHashesMsg = 0x08
+	GetPooledTransactionsMsg      = 0x09
+	PooledTransactionsMsg         = 0x0a
 )
 
 type errCode int
@@ -94,6 +103,14 @@ var errorToString = map[int]string{
 }
 
 type txPool interface {
+	// Has returns an indicator whether txpool has a transaction
+	// cached with the given hash.
+	Has(hash common.Hash) bool
+
+	// Get retrieves the transaction from local txpool with given
+	// tx hash.
+	Get(hash common.Hash) *types.Transaction
+
 	// AddRemotes should add the given transactions to the pool.
 	AddRemotes([]*types.Transaction) []error
 

eth/protocol_test.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"math/big"
 	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
 
@@ -61,7 +62,7 @@ func TestStatusMsgErrors63(t *testing.T) {
 		wantError error
 	}{
 		{
-			code: TxMsg, data: []interface{}{},
+			code: TransactionMsg, data: []interface{}{},
 			wantError: errResp(ErrNoStatusMsg, "first msg has code 2 (!= 0)"),
 		},
 		{
@@ -113,7 +114,7 @@ func TestStatusMsgErrors64(t *testing.T) {
 		wantError error
 	}{
 		{
-			code: TxMsg, data: []interface{}{},
+			code: TransactionMsg, data: []interface{}{},
 			wantError: errResp(ErrNoStatusMsg, "first msg has code 2 (!= 0)"),
 		},
 		{
@@ -180,16 +181,16 @@ func TestForkIDSplit(t *testing.T) {
 		blocksNoFork, _  = core.GenerateChain(configNoFork, genesisNoFork, engine, dbNoFork, 2, nil)
 		blocksProFork, _ = core.GenerateChain(configProFork, genesisProFork, engine, dbProFork, 2, nil)
 
-		ethNoFork, _  = NewProtocolManager(configNoFork, nil, downloader.FullSync, 1, new(event.TypeMux), new(testTxPool), engine, chainNoFork, dbNoFork, 1, nil)
-		ethProFork, _ = NewProtocolManager(configProFork, nil, downloader.FullSync, 1, new(event.TypeMux), new(testTxPool), engine, chainProFork, dbProFork, 1, nil)
+		ethNoFork, _  = NewProtocolManager(configNoFork, nil, downloader.FullSync, 1, new(event.TypeMux), &testTxPool{pool: make(map[common.Hash]*types.Transaction)}, engine, chainNoFork, dbNoFork, 1, nil)
+		ethProFork, _ = NewProtocolManager(configProFork, nil, downloader.FullSync, 1, new(event.TypeMux), &testTxPool{pool: make(map[common.Hash]*types.Transaction)}, engine, chainProFork, dbProFork, 1, nil)
 	)
 	ethNoFork.Start(1000)
 	ethProFork.Start(1000)
 
 	// Both nodes should allow the other to connect (same genesis, next fork is the same)
 	p2pNoFork, p2pProFork := p2p.MsgPipe()
-	peerNoFork := newPeer(64, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork)
-	peerProFork := newPeer(64, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork)
+	peerNoFork := newPeer(64, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork, nil)
+	peerProFork := newPeer(64, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork, nil)
 
 	errc := make(chan error, 2)
 	go func() { errc <- ethNoFork.handle(peerProFork) }()
@@ -207,8 +208,8 @@ func TestForkIDSplit(t *testing.T) {
 	chainProFork.InsertChain(blocksProFork[:1])
 
 	p2pNoFork, p2pProFork = p2p.MsgPipe()
-	peerNoFork = newPeer(64, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork)
-	peerProFork = newPeer(64, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork)
+	peerNoFork = newPeer(64, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork, nil)
+	peerProFork = newPeer(64, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork, nil)
 
 	errc = make(chan error, 2)
 	go func() { errc <- ethNoFork.handle(peerProFork) }()
@@ -226,8 +227,8 @@ func TestForkIDSplit(t *testing.T) {
 	chainProFork.InsertChain(blocksProFork[1:2])
 
 	p2pNoFork, p2pProFork = p2p.MsgPipe()
-	peerNoFork = newPeer(64, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork)
-	peerProFork = newPeer(64, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork)
+	peerNoFork = newPeer(64, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork, nil)
+	peerProFork = newPeer(64, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork, nil)
 
 	errc = make(chan error, 2)
 	go func() { errc <- ethNoFork.handle(peerProFork) }()
@@ -246,6 +247,7 @@ func TestForkIDSplit(t *testing.T) {
 // This test checks that received transactions are added to the local pool.
 func TestRecvTransactions63(t *testing.T) { testRecvTransactions(t, 63) }
 func TestRecvTransactions64(t *testing.T) { testRecvTransactions(t, 64) }
+func TestRecvTransactions65(t *testing.T) { testRecvTransactions(t, 65) }
 
 func testRecvTransactions(t *testing.T, protocol int) {
 	txAdded := make(chan []*types.Transaction)
@@ -256,7 +258,7 @@ func testRecvTransactions(t *testing.T, protocol int) {
 	defer p.close()
 
 	tx := newTestTransaction(testAccount, 0, 0)
-	if err := p2p.Send(p.app, TxMsg, []interface{}{tx}); err != nil {
+	if err := p2p.Send(p.app, TransactionMsg, []interface{}{tx}); err != nil {
 		t.Fatalf("send error: %v", err)
 	}
 	select {
@@ -274,18 +276,22 @@ func testRecvTransactions(t *testing.T, protocol int) {
 // This test checks that pending transactions are sent.
 func TestSendTransactions63(t *testing.T) { testSendTransactions(t, 63) }
 func TestSendTransactions64(t *testing.T) { testSendTransactions(t, 64) }
+func TestSendTransactions65(t *testing.T) { testSendTransactions(t, 65) }
 
 func testSendTransactions(t *testing.T, protocol int) {
 	pm, _ := newTestProtocolManagerMust(t, downloader.FullSync, 0, nil, nil)
 	defer pm.Stop()
 
-	// Fill the pool with big transactions.
+	// Fill the pool with big transactions (use a subscription to wait until all
+	// the transactions are announced to avoid spurious events causing extra
+	// broadcasts).
 	const txsize = txsyncPackSize / 10
 	alltxs := make([]*types.Transaction, 100)
 	for nonce := range alltxs {
 		alltxs[nonce] = newTestTransaction(testAccount, uint64(nonce), txsize)
 	}
 	pm.txpool.AddRemotes(alltxs)
+	time.Sleep(100 * time.Millisecond) // Wait until new tx even gets out of the system (lame)
 
 	// Connect several peers. They should all receive the pending transactions.
 	var wg sync.WaitGroup
@@ -297,18 +303,50 @@ func testSendTransactions(t *testing.T, protocol int) {
 			seen[tx.Hash()] = false
 		}
 		for n := 0; n < len(alltxs) && !t.Failed(); {
-			var txs []*types.Transaction
+			var forAllHashes func(callback func(hash common.Hash))
+			switch protocol {
+			case 63:
+				fallthrough
+			case 64:
 				msg, err := p.app.ReadMsg()
 				if err != nil {
 					t.Errorf("%v: read error: %v", p.Peer, err)
-			} else if msg.Code != TxMsg {
+					continue
+				} else if msg.Code != TransactionMsg {
 					t.Errorf("%v: got code %d, want TxMsg", p.Peer, msg.Code)
+					continue
 				}
+				var txs []*types.Transaction
 				if err := msg.Decode(&txs); err != nil {
 					t.Errorf("%v: %v", p.Peer, err)
+					continue
 				}
+				forAllHashes = func(callback func(hash common.Hash)) {
 					for _, tx := range txs {
-				hash := tx.Hash()
+						callback(tx.Hash())
+					}
+				}
+			case 65:
+				msg, err := p.app.ReadMsg()
+				if err != nil {
+					t.Errorf("%v: read error: %v", p.Peer, err)
+					continue
+				} else if msg.Code != NewPooledTransactionHashesMsg {
+					t.Errorf("%v: got code %d, want NewPooledTransactionHashesMsg", p.Peer, msg.Code)
+					continue
+				}
+				var hashes []common.Hash
+				if err := msg.Decode(&hashes); err != nil {
+					t.Errorf("%v: %v", p.Peer, err)
+					continue
+				}
+				forAllHashes = func(callback func(hash common.Hash)) {
+					for _, h := range hashes {
+						callback(h)
+					}
+				}
+			}
+			forAllHashes(func(hash common.Hash) {
 				seentx, want := seen[hash]
 				if seentx {
 					t.Errorf("%v: got tx more than once: %x", p.Peer, hash)
@@ -318,7 +356,7 @@ func testSendTransactions(t *testing.T, protocol int) {
 				}
 				seen[hash] = true
 				n++
-			}
+			})
 		}
 	}
 	for i := 0; i < 3; i++ {
@@ -329,6 +367,53 @@ func testSendTransactions(t *testing.T, protocol int) {
 	wg.Wait()
 }
 
+func TestTransactionPropagation(t *testing.T)  { testSyncTransaction(t, true) }
+func TestTransactionAnnouncement(t *testing.T) { testSyncTransaction(t, false) }
+
+func testSyncTransaction(t *testing.T, propagtion bool) {
+	// Create a protocol manager for transaction fetcher and sender
+	pmFetcher, _ := newTestProtocolManagerMust(t, downloader.FastSync, 0, nil, nil)
+	defer pmFetcher.Stop()
+	pmSender, _ := newTestProtocolManagerMust(t, downloader.FastSync, 1024, nil, nil)
+	pmSender.broadcastTxAnnouncesOnly = !propagtion
+	defer pmSender.Stop()
+
+	// Sync up the two peers
+	io1, io2 := p2p.MsgPipe()
+
+	go pmSender.handle(pmSender.newPeer(65, p2p.NewPeer(enode.ID{}, "sender", nil), io2, pmSender.txpool.Get))
+	go pmFetcher.handle(pmFetcher.newPeer(65, p2p.NewPeer(enode.ID{}, "fetcher", nil), io1, pmFetcher.txpool.Get))
+
+	time.Sleep(250 * time.Millisecond)
+	pmFetcher.synchronise(pmFetcher.peers.BestPeer())
+	atomic.StoreUint32(&pmFetcher.acceptTxs, 1)
+
+	newTxs := make(chan core.NewTxsEvent, 1024)
+	sub := pmFetcher.txpool.SubscribeNewTxsEvent(newTxs)
+	defer sub.Unsubscribe()
+
+	// Fill the pool with new transactions
+	alltxs := make([]*types.Transaction, 1024)
+	for nonce := range alltxs {
+		alltxs[nonce] = newTestTransaction(testAccount, uint64(nonce), 0)
+	}
+	pmSender.txpool.AddRemotes(alltxs)
+
+	var got int
+loop:
+	for {
+		select {
+		case ev := <-newTxs:
+			got += len(ev.Txs)
+			if got == 1024 {
+				break loop
+			}
+		case <-time.NewTimer(time.Second).C:
+			t.Fatal("Failed to retrieve all transaction")
+		}
+	}
+}
+
 // Tests that the custom union field encoder and decoder works correctly.
 func TestGetBlockHeadersDataEncodeDecode(t *testing.T) {
 	// Create a "random" hash for testing

eth/sync.go

@@ -44,6 +44,12 @@ type txsync struct {
 
 // syncTransactions starts sending all currently pending transactions to the given peer.
 func (pm *ProtocolManager) syncTransactions(p *peer) {
+	// Assemble the set of transaction to broadcast or announce to the remote
+	// peer. Fun fact, this is quite an expensive operation as it needs to sort
+	// the transactions if the sorting is not cached yet. However, with a random
+	// order, insertions could overflow the non-executable queues and get dropped.
+	//
+	// TODO(karalabe): Figure out if we could get away with random order somehow
 	var txs types.Transactions
 	pending, _ := pm.txpool.Pending()
 	for _, batch := range pending {
@@ -52,26 +58,40 @@ func (pm *ProtocolManager) syncTransactions(p *peer) {
 	if len(txs) == 0 {
 		return
 	}
+	// The eth/65 protocol introduces proper transaction announcements, so instead
+	// of dripping transactions across multiple peers, just send the entire list as
+	// an announcement and let the remote side decide what they need (likely nothing).
+	if p.version >= eth65 {
+		hashes := make([]common.Hash, len(txs))
+		for i, tx := range txs {
+			hashes[i] = tx.Hash()
+		}
+		p.AsyncSendPooledTransactionHashes(hashes)
+		return
+	}
+	// Out of luck, peer is running legacy protocols, drop the txs over
 	select {
-	case pm.txsyncCh <- &txsync{p, txs}:
+	case pm.txsyncCh <- &txsync{p: p, txs: txs}:
 	case <-pm.quitSync:
 	}
 }
 
-// txsyncLoop takes care of the initial transaction sync for each new
+// txsyncLoop64 takes care of the initial transaction sync for each new
 // connection. When a new peer appears, we relay all currently pending
 // transactions. In order to minimise egress bandwidth usage, we send
 // the transactions in small packs to one peer at a time.
-func (pm *ProtocolManager) txsyncLoop() {
+func (pm *ProtocolManager) txsyncLoop64() {
 	var (
 		pending = make(map[enode.ID]*txsync)
 		sending = false               // whether a send is active
 		pack    = new(txsync)         // the pack that is being sent
 		done    = make(chan error, 1) // result of the send
 	)
-
 	// send starts a sending a pack of transactions from the sync.
 	send := func(s *txsync) {
+		if s.p.version >= eth65 {
+			panic("initial transaction syncer running on eth/65+")
+		}
 		// Fill pack with transactions up to the target size.
 		size := common.StorageSize(0)
 		pack.p = s.p
@@ -88,7 +108,7 @@ func (pm *ProtocolManager) txsyncLoop() {
 		// Send the pack in the background.
 		s.p.Log().Trace("Sending batch of transactions", "count", len(pack.txs), "bytes", size)
 		sending = true
-		go func() { done <- pack.p.SendTransactions(pack.txs) }()
+		go func() { done <- pack.p.SendTransactions64(pack.txs) }()
 	}
 
 	// pick chooses the next pending sync.
@@ -133,8 +153,10 @@ func (pm *ProtocolManager) txsyncLoop() {
 // downloading hashes and blocks as well as handling the announcement handler.
 func (pm *ProtocolManager) syncer() {
 	// Start and ensure cleanup of sync mechanisms
-	pm.fetcher.Start()
-	defer pm.fetcher.Stop()
+	pm.blockFetcher.Start()
+	pm.txFetcher.Start()
+	defer pm.blockFetcher.Stop()
+	defer pm.txFetcher.Stop()
 	defer pm.downloader.Terminate()
 
 	// Wait for different events to fire synchronisation operations

eth/sync_test.go

@@ -26,9 +26,13 @@ import (
 	"github.com/ethereum/go-ethereum/p2p/enode"
 )
 
+func TestFastSyncDisabling63(t *testing.T) { testFastSyncDisabling(t, 63) }
+func TestFastSyncDisabling64(t *testing.T) { testFastSyncDisabling(t, 64) }
+func TestFastSyncDisabling65(t *testing.T) { testFastSyncDisabling(t, 65) }
+
 // Tests that fast sync gets disabled as soon as a real block is successfully
 // imported into the blockchain.
-func TestFastSyncDisabling(t *testing.T) {
+func testFastSyncDisabling(t *testing.T, protocol int) {
 	// Create a pristine protocol manager, check that fast sync is left enabled
 	pmEmpty, _ := newTestProtocolManagerMust(t, downloader.FastSync, 0, nil, nil)
 	if atomic.LoadUint32(&pmEmpty.fastSync) == 0 {
@@ -42,8 +46,8 @@ func TestFastSyncDisabling(t *testing.T) {
 	// Sync up the two peers
 	io1, io2 := p2p.MsgPipe()
 
-	go pmFull.handle(pmFull.newPeer(63, p2p.NewPeer(enode.ID{}, "empty", nil), io2))
-	go pmEmpty.handle(pmEmpty.newPeer(63, p2p.NewPeer(enode.ID{}, "full", nil), io1))
+	go pmFull.handle(pmFull.newPeer(protocol, p2p.NewPeer(enode.ID{}, "empty", nil), io2, pmFull.txpool.Get))
+	go pmEmpty.handle(pmEmpty.newPeer(protocol, p2p.NewPeer(enode.ID{}, "full", nil), io1, pmEmpty.txpool.Get))
 
 	time.Sleep(250 * time.Millisecond)
 	pmEmpty.synchronise(pmEmpty.peers.BestPeer())

fuzzbuzz.yaml

@@ -26,6 +26,14 @@ targets:
       function: Fuzz
       package: github.com/ethereum/go-ethereum/tests/fuzzers/trie
       checkout: github.com/ethereum/go-ethereum/
+  - name: txfetcher
+    language: go
+    version: "1.13"
+    corpus: ./fuzzers/txfetcher/corpus
+    harness:
+      function: Fuzz
+      package: github.com/ethereum/go-ethereum/tests/fuzzers/txfetcher
+      checkout: github.com/ethereum/go-ethereum/
   - name: whisperv6
     language: go
     version: "1.13"

tests/fuzzers/txfetcher/corpus/0151ee1d0db4c74d3bcdfa4f7396a4c8538748c9-2

+ 
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/021d1144e359233c496e22c3250609b11b213e9f-4

+ TESTING KEY-----
+MIICXgIBAAKBgQDuLnQAI3mDgey3VBzWnB2L39JUU4txjeVE6myuDqkM/uGlfjb9
+SjY1bIw4iAJm2gsvvZhIrCHS3l6afab4pZB
+l2+XsDlrKBxKKtDrGxlG4LjncdabFn9gvLZad2bSysqz/qTAUStTtqJQIDAQAB
+AoGAGRzwwir7XvBOAy5tuV6ef6anZzus1s1Y1Clb6HbnWWF/wbZGOpet
+3m4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKZTXtdZrh+k7hx0nTP8Jcb
+uqFk541awmMogY/EfbWd6IOkp+4xqjlFBEDytgbIECQQDvH/6nk+hgN4H
+qzzVtxxr397vWrjrIgPbJpQvBsafG7b0dA4AFjwVbFLmQcj2PprIMmPcQrooz84SHEg1Ak/7KCxmD/sfgS5TeuNi8DoUBEmiSJwm7FX
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/DoCzjA0CQQDU
+y2pGsuSmgUtWj3NM9xuwYPm+Z/F84K6+ARYiZ6PYj013sovGKUFfYAqVXVlxtIoX
+qUn3Xh9ps8ZfjLZO7BAkEAlT4R5Yl6cGhaJQYZHOde3JMhNRcVFMO8dDaFo
+f9Oeos0UotgiDktdQHxdNEwLjQlJBz+OtwwA=---E RATTIEY-
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/0d28327b1fb52c1ba02a6eb96675c31633921bb2-2

+&^oȗ-----BEGIN RSA TESTING KEY-----
+MIICXgIBAAKBgQDuLnQAI3mDgey3VBzWnB2L39JUU4txjeVE6myuDqkM/uGlfjb9
+SjY1bIw4iA5sBBZzHi3z0h1YV8QPuxEbi4nW91IJm2gsvvZhIrCHS3l6afab4pZB
+l2+XsDulrKBxKKtD1rGxlG4LjncdabFn9gvLZad2bSysqz/qTAUStTvqJQIDAQAB
+AoGAGRzwwir7XvBOAy5tM/uV6e+Zf6anZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpet
+3Zm4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKwZatTXtdZrhu+Jk7hx0nTPy8Jcb
+uJqFk541aEw+mMogY/xEcfbWd6IOkp+4xqjlFLBEDytgbIECQQDvH/E6nk+hgN4H
+qzzVtxxr397vWrjrIgPbJpQvBsafG7b0dA4AFjwVbFLmQcj2PprIMmPcQrooz8vp
+jy4SHEg1AkEA/v13/5M47K9vCxmb8QeD/asydfsgS5TeuNi8DoUBEmiSJwma7FXY
+fFUtxuvL7XvjwjN5B30pNEbc6Iuyt7y4MQJBAIt21su4b3sjXNueLKH85Q+phy2U
+fQtuUE9txblTu14q3N7gHRZB4ZMhFYyDy8CKrN2cPg/Fvyt0Xlp/DoCzjA0CQQDU
+y2ptGsuSmgUtWj3NM9xuwYPm+Z/F84K6+ARYiZ6PYj013sovGKUFfYAqVXVlxtIX
+qyUBnu3X9ps8ZfjLZO7BAkEAlT4R5Yl6cGhaJQYZHOde3JEMhNRcVFMO8dJDaFeo
+f9Oeos0UUothgiDktdQHxdNEwLjQf7lJJBzV+5OtwswCWA==
+-----END RSA TESTING KEY-----Q_
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/0fcd827b57ded58e91f7ba2ac2b7ea4d25ebedca-7

+ap
�

￿���V�#�&��
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/1adfa6b9ddf5766220c8ff7ede2926ca241bb947-3

+TAKBgDuLnQA3gey3VBznB39JUtxjeE6myuDkM/uGlfjb
+S1w4iA5sBzzh8uxEbi4nW91IJm2gsvvZhICHS3l6ab4pZB
+l2DulrKBxKKtD1rGxlG4LncabFn9vLZad2bSysqz/qTAUSTvqJQIDAQAB
+AoGAGRzwwir7XvBOAy5tM/uV6e+Zf6anZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpet
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+qyU3X9ps8ZfjLZ45l6cGhaJQYZHOde3JEMhNRcVFMO8dJDaFeo
+f9Oeos0UUothgiDktdQHxdNEwLjQf7lJJBzV+5OtwswCWA==
+-----END RSA T
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/1e14c7ea1faef92890988061b5abe96db7190f98-7

+0000000000000000000000000000000000000000000000000000000000000000000000000
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/1fd84ee194e791783a7f18f0a6deab8efe05fc04-2

+--broken encoding: IBM420_ltr
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/21e76b9fca21d94d97f860c1c82f40697a83471b-8

+DtQvfQ+MULKZTXk78c
+/fWkpxlQQ/+hgNzVtx9vWgJsafG7b0dA4AFjwVbFLmQcj2PprIMmPNQrooX
+L
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/23ddcd66aa92fe3d78b7f5b6e7cddb1b55c5f5df-3

+4txjeVE6myuDqkM/uGlfjb9
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+AoGAGRzwwXvBOAy5tM/uV6e+Zf6aZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpet
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+qyBnu3X9pfLZOAkEAlT4R5Yl6cJQYZHOde3JEhNRcVFMO8dJFo
+f9Oeos0UUhgiDkQxdEwLjQf7lJJz5OtwC=
+-NRSA TESINGKEY-Q_
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/30494b85bb60ad7f099fa49d427007a761620d8f-5

+jXbnWWF/wbZGOpet
+3Zm4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKwZatTXtdZrhu+Jk7hx0nTPy8Jcb
+uJqFk541aEw+mMogY/xEcfbWd6IOkp+4xqjlFLBEDytgbIECQQDvH/E6nk+hgN4H
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/DoCzjA0CQQDU
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+f9Oeos0UotgiDktdQHxdNEwLjQfl
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/316024ca3aaf09c1de5258733ff5fe3d799648d3-4

+^oȗ----BEGIN RA TTING KEY-----
+IIXgIBAAKBQDuLnQI3mDgey3VBzWnB2L39JUU4txjeVE6myuDqkM/uGlfjb9
+SjY1bIw4iA5sBBZzHi3z0h1YV8QPuxEbi4nW91IJmgsvvZhrCHSl6afab4pZB
+l2+XsDulrKBxKKtD1rGxlG4LjcdabF9gvLZad2bSysqz/qTAUStTvqJQDAQAB
+AoGAGRzwwir7XvBOAy5tM/uV6e+Zf6anZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpet
+3Z4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKwZatTXtdZrhu+Jk7hx0nTPy8Jcb
+uJqFk541aEw+mMogY/xEcfbWd6IOkp+4xqjlFLBEDytgbIECQQDvH/E6nk+hgN4H
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+f9Oeos0UUothgiDktdQHxdNEwLjQf7lJJBzV+5OtwswCWA==
+-----END RSA TESTING KEY-----Q_
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/33ec1dc0bfeb93d16edee3c07125fec6ac1aa17d-2

+
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/3a010483a4ad8d7215447ce27e0fac3791235c99-4

+
+lGAGRzwwir7XvBOAy5tM/uV6e+Zf6anZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpet
+3Zm4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKwZatTXtdZrhu+Jk7hx0nTPy8Jcb
+uJqFk541aEw+mMogY/xEcfbWd6IOkp+4xqjlFLBEDytgbIECQQDvH/E6nk+hgN4H
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+fFUtxuvL7XvjwjN5
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/3c37f6d58b8029971935f127f53e6aaeba558445-6

+w�€
�

�
�
�
�
�
�
�
�	
�
+
�
�
�

�
�
�

�
�
�
�
�
�
�
�
�
�
�
�
�
�
� 
�!
�"
�#
�$
�%
�&
�'
�(
�)
�*
�+
�,
�-
�.
�/
0
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/3c73b63bafa9f535c882ec17189adaf02b58f432-6

+LvhaJQHOe3EhRcdaFofeoogkjQfJB
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/3f99c546a3962256176d566c19e3fffb62072078-1

+&^o
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/436154e5bb6487673f6642e6d2a582c01b083c08-8

+apfffffffffffffffffffffffffffffffebadce6f48a0_3bbfd2364
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/4a0a12f5b033c8c160cc3b5133692ea1e92c6cdf-7

+DtQvfQ+MULKZTXk78c
+/fWkpxlyEQQ/+hgNzVtx9vWgJsafG7b0dA4AFjwVbFLmQcj2PprIMmPNQg1Ak/7KCxmDgS5TDEmSJwFX
+txLjbt4xTgeXVlXsjLZ
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/5570ef82893a9b9b9158572d43a7de7537121d2d-1

+
�ٯ0,1,2,3,4,5,6,7,-3420794409,(2,a)
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/61e89c3fbdf9eff74bd250ea73cc2e61f8ca0d97-5

+88242871'392752200424491531672177074144720616417147514758635765020556616
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/6782da8f1a432a77306d60d2ac2470c35b98004f-3

+21888242871'392752200424452601091531672177074144720616417147514758635765020556616 
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/6a5059bc86872526241d21ab5dae9f0afd3b9ae1-3

+¿½
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/717928e0e2d478c680c6409b173552ca98469ba5-6

+LvhaJcdaFofenogkjQfJB
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/7312a0f31ae5d773ed4fd74abc7521eb14754683-8

+DtQvfQ+MULKZTXk78c
+/fWkpxlyEQQ/+hgNzVtx9vWgJsafG7b0dA4AFjwVbFLmQcj2PprIMmPNQg1AkS5TDEmSJwFVlXsjLZ
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/78480977d5c07386b06e9b37f5c82f5ed86c2f09-3

+ TESTING KEY-----
+MIICXgIBAAKBgQDuLnQAI3mDgey3VBzWnB2L39JUU4txjeVE6myuDqkM/uGlfjb9
+SjY1bIw4iAJm2gsvvZhIrCHS3l6afab4pZB
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/DoCzjA0CQQDU
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+f9Oeos0UotgiDktdQHxdNEwLjQflJJBzV+5OtwswCA=----EN RATESTI EY-----Q
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/7a113cd3c178934cdb64353af86d51462d7080a4-5

+l6afab4pZB
+l2+XsDlrKBxKKtDrGxlG4LjncdabFn9gvLZad2bSysqz/qTAUStTtqJQIDAQAB
+AoGAGRzwwir7XvBOAy5tuV6ef6anZzus1s1Y1Clb6HbnWWF/wbZGOpet
+3m4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKZTXtdZrh+k7hx0nTP8Jcb
+uqFk541awmMogY/EfbWd6IOkp+4xqjlFBEDytgbIECQQDvH/6nk+hgN4H
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/DoCzjA0CQQDU
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+f9Oeos0UotgiDktdQHxdNEwLjQlJBz+OtwwA=---E ATTIEY-
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/7ea9f71020f3eb783f743f744eba8d8ca4b2582f-3

+
+l2+DulrKBxKKtD1rGxlG4LjncdabFn9gvLZad2bSysqz/qTAUStTvqJQIDAQAB
+AoGAGRzwwir7XvBOAy5tM/uV6e+Zf6anZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpet
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+fQtuUE9txblTu14q3N7gHRZB4ZMhFYyDy8CKrN2cPg/Fvyt0Xlp/DoCzjA0CQQDU

tests/fuzzers/txfetcher/corpus/84f8c275f3ffbaf8c32c21782af13de10e7de28b-3

+KKtDlbjVeLKwZatTXtdZrhu+Jk7hx0xxr397vWrjrIgPbJpQvBsafG7b0dA4AFjwVbFLQcmPcQETT YQ
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/9034aaf45143996a2b14465c352ab0c6fa26b221-2

+½
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/92cefdc6251d04896349a464b29be03d6bb04c3d-2

+39402006196394479212279040100143613805079739270465446667948293404245721771496870329047266088258938001861606973112319 
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/9ebcbbfdaf0e98c87652e57226a4d8a35170c67d-4

+l2+DulrKBxKKtD1rGxlG4LjncdabFn9gvLZad2bSysqz/qTAUStTvqJQIDAQAB
+AoGAGRzwwir7XvBOAy5tM/uV6e+Zf6anZzus1s1Y1ClbjbE6HXbnWWF/wbZGOpwVbFLmQet
+3Zm4vD6MXc7jpTLryzTQIvVdfQbRc6+MUVeLKwZatTXtdZrhu+Jk7hx0nTPy8Jcb
+uJqFk541aEw+mMogY/xEcfbWd6IOkp+4xqjlFLBEDytgbIECQQDvH/E6nk+hgN4H
+qzzVtxxr397vWrjr
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/9ff520eb8b8319a5fdafbe4d1cbb02a75058d93b-7

+&w�€
�

�
�
�
�
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�
�
�	
�
+
�
�
�

�
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�!
�"
�#
�$
�%
�&
�'
�(
�)
�*
�+
�,
�-
�.
�/
0
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/a8f7c254eb64a40fd2a77b79979c7bbdac6a760c-4

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tests/fuzzers/txfetcher/corpus/aa7444d8e326158046862590a0db993c07aef372-7

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\ No newline at end of file

tests/fuzzers/txfetcher/corpus/ae4593626d8796e079a358c2395a4f6c9ddd6a44-6

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tests/fuzzers/txfetcher/corpus/b631ef3291fa405cd6517d11f4d1b9b6d02912d4-2

+&o
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/b858cb282617fb0956d960215c8e84d1ccf909c6-2

+ 
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/bc9d570aacf3acd39600feda8e72a293a4667da4-1

+� 
\ No newline at end of file

tests/fuzzers/txfetcher/corpus/be7eed35b245b5d5d2adcdb4c67f07794eb86b24-3

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\ No newline at end of file

tests/fuzzers/txfetcher/corpus/c010b0cd70c7edbc5bd332fc9e2e91c6a1cbcdc4-5

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\ No newline at end of file