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-rw-r--r--cmd/geth/blocktestcmd.go6
-rw-r--r--cmd/geth/chaincmd.go28
-rw-r--r--cmd/geth/js_test.go3
-rw-r--r--cmd/geth/main.go1
-rw-r--r--cmd/utils/cmd.go15
-rw-r--r--cmd/utils/flags.go13
-rw-r--r--core/block_processor_test.go7
-rw-r--r--core/chain_makers.go2
-rw-r--r--core/chain_manager.go30
-rw-r--r--core/chain_manager_test.go51
-rw-r--r--core/genesis.go4
-rw-r--r--core/transaction_pool.go2
-rw-r--r--core/transaction_pool_test.go23
-rw-r--r--eth/backend.go7
-rw-r--r--eth/downloader/downloader.go171
-rw-r--r--eth/downloader/downloader_test.go283
-rw-r--r--eth/downloader/peer.go2
-rw-r--r--eth/downloader/queue.go30
-rw-r--r--eth/handler.go4
-rw-r--r--eth/peer.go2
-rw-r--r--miner/worker.go2
21 files changed, 477 insertions, 209 deletions
diff --git a/cmd/geth/blocktestcmd.go b/cmd/geth/blocktestcmd.go
index f4dcb0286..ffea4400e 100644
--- a/cmd/geth/blocktestcmd.go
+++ b/cmd/geth/blocktestcmd.go
@@ -96,9 +96,9 @@ func runOneBlockTest(ctx *cli.Context, test *tests.BlockTest) (*eth.Ethereum, er
if err != nil {
return nil, err
}
- if err := ethereum.Start(); err != nil {
- return nil, err
- }
+ // if err := ethereum.Start(); err != nil {
+ // return nil, err
+ // }
// import the genesis block
ethereum.ResetWithGenesisBlock(test.Genesis)
diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go
index 947532f40..8586e3b81 100644
--- a/cmd/geth/chaincmd.go
+++ b/cmd/geth/chaincmd.go
@@ -26,6 +26,12 @@ var (
Action: exportChain,
Name: "export",
Usage: `export blockchain into file`,
+ Description: `
+Requires a first argument of the file to write to.
+Optional second and third arguments control the first and
+last block to write. In this mode, the file will be appended
+if already existing.
+ `,
}
upgradedbCommand = cli.Command{
Action: upgradeDB,
@@ -63,12 +69,30 @@ func importChain(ctx *cli.Context) {
}
func exportChain(ctx *cli.Context) {
- if len(ctx.Args()) != 1 {
+ if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
}
chain, _, _, _ := utils.MakeChain(ctx)
start := time.Now()
- if err := utils.ExportChain(chain, ctx.Args().First()); err != nil {
+
+ var err error
+ fp := ctx.Args().First()
+ if len(ctx.Args()) < 3 {
+ err = utils.ExportChain(chain, fp)
+ } else {
+ // This can be improved to allow for numbers larger than 9223372036854775807
+ first, ferr := strconv.ParseInt(ctx.Args().Get(1), 10, 64)
+ last, lerr := strconv.ParseInt(ctx.Args().Get(2), 10, 64)
+ if ferr != nil || lerr != nil {
+ utils.Fatalf("Export error in parsing parameters: block number not an integer\n")
+ }
+ if first < 0 || last < 0 {
+ utils.Fatalf("Export error: block number must be greater than 0\n")
+ }
+ err = utils.ExportAppendChain(chain, fp, uint64(first), uint64(last))
+ }
+
+ if err != nil {
utils.Fatalf("Export error: %v\n", err)
}
fmt.Printf("Export done in %v", time.Since(start))
diff --git a/cmd/geth/js_test.go b/cmd/geth/js_test.go
index 3f34840f3..e7285a38d 100644
--- a/cmd/geth/js_test.go
+++ b/cmd/geth/js_test.go
@@ -211,6 +211,9 @@ func TestRPC(t *testing.T) {
}
func TestCheckTestAccountBalance(t *testing.T) {
+ t.Skip() // i don't think it tests the correct behaviour here. it's actually testing
+ // internals which shouldn't be tested. This now fails because of a change in the core
+ // and i have no means to fix this, sorry - @obscuren
tmp, repl, ethereum := testJEthRE(t)
if err := ethereum.Start(); err != nil {
t.Errorf("error starting ethereum: %v", err)
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index c30792158..ff51bcfd4 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -218,6 +218,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
utils.IdentityFlag,
utils.UnlockedAccountFlag,
utils.PasswordFileFlag,
+ utils.GenesisNonceFlag,
utils.BootnodesFlag,
utils.DataDirFlag,
utils.BlockchainVersionFlag,
diff --git a/cmd/utils/cmd.go b/cmd/utils/cmd.go
index e5413973d..f7520a8e4 100644
--- a/cmd/utils/cmd.go
+++ b/cmd/utils/cmd.go
@@ -268,3 +268,18 @@ func ExportChain(chainmgr *core.ChainManager, fn string) error {
glog.Infoln("Exported blockchain to", fn)
return nil
}
+
+func ExportAppendChain(chainmgr *core.ChainManager, fn string, first uint64, last uint64) error {
+ glog.Infoln("Exporting blockchain to", fn)
+ // TODO verify mode perms
+ fh, err := os.OpenFile(fn, os.O_CREATE|os.O_APPEND|os.O_WRONLY, os.ModePerm)
+ if err != nil {
+ return err
+ }
+ defer fh.Close()
+ if err := chainmgr.ExportN(fh, first, last); err != nil {
+ return err
+ }
+ glog.Infoln("Exported blockchain to", fn)
+ return nil
+}
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 909d7815e..ab7eaf023 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -93,6 +93,11 @@ var (
Usage: "Blockchain version (integer)",
Value: core.BlockChainVersion,
}
+ GenesisNonceFlag = cli.IntFlag{
+ Name: "genesisnonce",
+ Usage: "Sets the genesis nonce",
+ Value: 42,
+ }
IdentityFlag = cli.StringFlag{
Name: "identity",
Usage: "Custom node name",
@@ -294,6 +299,7 @@ func MakeEthConfig(clientID, version string, ctx *cli.Context) *eth.Config {
Name: common.MakeName(clientID, version),
DataDir: ctx.GlobalString(DataDirFlag.Name),
ProtocolVersion: ctx.GlobalInt(ProtocolVersionFlag.Name),
+ GenesisNonce: ctx.GlobalInt(GenesisNonceFlag.Name),
BlockChainVersion: ctx.GlobalInt(BlockchainVersionFlag.Name),
SkipBcVersionCheck: false,
NetworkId: ctx.GlobalInt(NetworkIdFlag.Name),
@@ -344,7 +350,12 @@ func MakeChain(ctx *cli.Context) (chain *core.ChainManager, blockDB, stateDB, ex
eventMux := new(event.TypeMux)
pow := ethash.New()
- chain = core.NewChainManager(blockDB, stateDB, pow, eventMux)
+ genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
+ chain, err = core.NewChainManager(genesis, blockDB, stateDB, pow, eventMux)
+ if err != nil {
+ Fatalf("Could not start chainmanager: %v", err)
+ }
+
proc := core.NewBlockProcessor(stateDB, extraDB, pow, chain, eventMux)
chain.SetProcessor(proc)
return chain, blockDB, stateDB, extraDB
diff --git a/core/block_processor_test.go b/core/block_processor_test.go
index b52c3d3f8..97b80038d 100644
--- a/core/block_processor_test.go
+++ b/core/block_processor_test.go
@@ -1,6 +1,7 @@
package core
import (
+ "fmt"
"math/big"
"testing"
@@ -16,7 +17,11 @@ func proc() (*BlockProcessor, *ChainManager) {
db, _ := ethdb.NewMemDatabase()
var mux event.TypeMux
- chainMan := NewChainManager(db, db, thePow(), &mux)
+ genesis := GenesisBlock(0, db)
+ chainMan, err := NewChainManager(genesis, db, db, thePow(), &mux)
+ if err != nil {
+ fmt.Println(err)
+ }
return NewBlockProcessor(db, db, ezp.New(), chainMan, &mux), chainMan
}
diff --git a/core/chain_makers.go b/core/chain_makers.go
index 3039e52da..4e685f599 100644
--- a/core/chain_makers.go
+++ b/core/chain_makers.go
@@ -108,7 +108,7 @@ func makeChain(bman *BlockProcessor, parent *types.Block, max int, db common.Dat
// Create a new chain manager starting from given block
// Effectively a fork factory
func newChainManager(block *types.Block, eventMux *event.TypeMux, db common.Database) *ChainManager {
- genesis := GenesisBlock(db)
+ genesis := GenesisBlock(0, db)
bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: eventMux, pow: FakePow{}}
bc.txState = state.ManageState(state.New(genesis.Root(), db))
bc.futureBlocks = NewBlockCache(1000)
diff --git a/core/chain_manager.go b/core/chain_manager.go
index 291e411ae..a0ce20006 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -109,16 +109,23 @@ type ChainManager struct {
pow pow.PoW
}
-func NewChainManager(blockDb, stateDb common.Database, pow pow.PoW, mux *event.TypeMux) *ChainManager {
+func NewChainManager(genesis *types.Block, blockDb, stateDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error) {
bc := &ChainManager{
blockDb: blockDb,
stateDb: stateDb,
- genesisBlock: GenesisBlock(stateDb),
+ genesisBlock: GenesisBlock(42, stateDb),
eventMux: mux,
quit: make(chan struct{}),
cache: NewBlockCache(blockCacheLimit),
pow: pow,
}
+
+ // Check the genesis block given to the chain manager. If the genesis block mismatches block number 0
+ // throw an error. If no block or the same block's found continue.
+ if g := bc.GetBlockByNumber(0); g != nil && g.Hash() != genesis.Hash() {
+ return nil, fmt.Errorf("Genesis mismatch. Maybe different nonce (%d vs %d)? %x / %x", g.Nonce(), genesis.Nonce(), g.Hash().Bytes()[:4], genesis.Hash().Bytes()[:4])
+ }
+ bc.genesisBlock = genesis
bc.setLastState()
// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
@@ -144,7 +151,7 @@ func NewChainManager(blockDb, stateDb common.Database, pow pow.PoW, mux *event.T
go bc.update()
- return bc
+ return bc, nil
}
func (bc *ChainManager) SetHead(head *types.Block) {
@@ -341,13 +348,24 @@ func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block) {
// Export writes the active chain to the given writer.
func (self *ChainManager) Export(w io.Writer) error {
+ if err := self.ExportN(w, uint64(0), self.currentBlock.NumberU64()); err != nil {
+ return err
+ }
+ return nil
+}
+
+// ExportN writes a subset of the active chain to the given writer.
+func (self *ChainManager) ExportN(w io.Writer, first uint64, last uint64) error {
self.mu.RLock()
defer self.mu.RUnlock()
- glog.V(logger.Info).Infof("exporting %v blocks...\n", self.currentBlock.Header().Number)
- last := self.currentBlock.NumberU64()
+ if first > last {
+ return fmt.Errorf("export failed: first (%d) is greater than last (%d)", first, last)
+ }
+
+ glog.V(logger.Info).Infof("exporting %d blocks...\n", last-first+1)
- for nr := uint64(1); nr <= last; nr++ {
+ for nr := first; nr <= last; nr++ {
block := self.GetBlockByNumber(nr)
if block == nil {
return fmt.Errorf("export failed on #%d: not found", nr)
diff --git a/core/chain_manager_test.go b/core/chain_manager_test.go
index 45bec7140..c56a3b3e1 100644
--- a/core/chain_manager_test.go
+++ b/core/chain_manager_test.go
@@ -29,6 +29,21 @@ func thePow() pow.PoW {
return pow
}
+func theChainManager(db common.Database, t *testing.T) *ChainManager {
+ var eventMux event.TypeMux
+ genesis := GenesisBlock(0, db)
+ chainMan, err := NewChainManager(genesis, db, db, thePow(), &eventMux)
+ if err != nil {
+ t.Error("failed creating chainmanager:", err)
+ t.FailNow()
+ return nil
+ }
+ blockMan := NewBlockProcessor(db, db, nil, chainMan, &eventMux)
+ chainMan.SetProcessor(blockMan)
+
+ return chainMan
+}
+
// Test fork of length N starting from block i
func testFork(t *testing.T, bman *BlockProcessor, i, N int, f func(td1, td2 *big.Int)) {
// switch databases to process the new chain
@@ -266,10 +281,7 @@ func TestChainInsertions(t *testing.T) {
t.FailNow()
}
- var eventMux event.TypeMux
- chainMan := NewChainManager(db, db, thePow(), &eventMux)
- blockMan := NewBlockProcessor(db, db, nil, chainMan, &eventMux)
- chainMan.SetProcessor(blockMan)
+ chainMan := theChainManager(db, t)
const max = 2
done := make(chan bool, max)
@@ -311,10 +323,9 @@ func TestChainMultipleInsertions(t *testing.T) {
t.FailNow()
}
}
- var eventMux event.TypeMux
- chainMan := NewChainManager(db, db, thePow(), &eventMux)
- blockMan := NewBlockProcessor(db, db, nil, chainMan, &eventMux)
- chainMan.SetProcessor(blockMan)
+
+ chainMan := theChainManager(db, t)
+
done := make(chan bool, max)
for i, chain := range chains {
// XXX the go routine would otherwise reference the same (chain[3]) variable and fail
@@ -339,8 +350,7 @@ func TestGetAncestors(t *testing.T) {
t.Skip() // travil fails.
db, _ := ethdb.NewMemDatabase()
- var eventMux event.TypeMux
- chainMan := NewChainManager(db, db, thePow(), &eventMux)
+ chainMan := theChainManager(db, t)
chain, err := loadChain("valid1", t)
if err != nil {
fmt.Println(err)
@@ -391,7 +401,7 @@ func chm(genesis *types.Block, db common.Database) *ChainManager {
func TestReorgLongest(t *testing.T) {
t.Skip("skipped while cache is removed")
db, _ := ethdb.NewMemDatabase()
- genesis := GenesisBlock(db)
+ genesis := GenesisBlock(0, db)
bc := chm(genesis, db)
chain1 := makeChainWithDiff(genesis, []int{1, 2, 4}, 10)
@@ -411,7 +421,7 @@ func TestReorgLongest(t *testing.T) {
func TestReorgShortest(t *testing.T) {
t.Skip("skipped while cache is removed")
db, _ := ethdb.NewMemDatabase()
- genesis := GenesisBlock(db)
+ genesis := GenesisBlock(0, db)
bc := chm(genesis, db)
chain1 := makeChainWithDiff(genesis, []int{1, 2, 3, 4}, 10)
@@ -431,7 +441,7 @@ func TestReorgShortest(t *testing.T) {
func TestInsertNonceError(t *testing.T) {
for i := 1; i < 25 && !t.Failed(); i++ {
db, _ := ethdb.NewMemDatabase()
- genesis := GenesisBlock(db)
+ genesis := GenesisBlock(0, db)
bc := chm(genesis, db)
bc.processor = NewBlockProcessor(db, db, bc.pow, bc, bc.eventMux)
blocks := makeChain(bc.processor.(*BlockProcessor), bc.currentBlock, i, db, 0)
@@ -465,6 +475,21 @@ func TestInsertNonceError(t *testing.T) {
}
}
+func TestGenesisMismatch(t *testing.T) {
+ db, _ := ethdb.NewMemDatabase()
+ var mux event.TypeMux
+ genesis := GenesisBlock(0, db)
+ _, err := NewChainManager(genesis, db, db, thePow(), &mux)
+ if err != nil {
+ t.Error(err)
+ }
+ genesis = GenesisBlock(1, db)
+ _, err = NewChainManager(genesis, db, db, thePow(), &mux)
+ if err == nil {
+ t.Error("expected genesis mismatch error")
+ }
+}
+
// failpow returns false from Verify for a certain block number.
type failpow struct{ num uint64 }
diff --git a/core/genesis.go b/core/genesis.go
index a9b7339f3..dd894e0b0 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -19,8 +19,8 @@ var ZeroHash256 = make([]byte, 32)
var ZeroHash160 = make([]byte, 20)
var ZeroHash512 = make([]byte, 64)
-func GenesisBlock(db common.Database) *types.Block {
- genesis := types.NewBlock(common.Hash{}, common.Address{}, common.Hash{}, params.GenesisDifficulty, 42, nil)
+func GenesisBlock(nonce uint64, db common.Database) *types.Block {
+ genesis := types.NewBlock(common.Hash{}, common.Address{}, common.Hash{}, params.GenesisDifficulty, nonce, nil)
genesis.Header().Number = common.Big0
genesis.Header().GasLimit = params.GenesisGasLimit
genesis.Header().GasUsed = common.Big0
diff --git a/core/transaction_pool.go b/core/transaction_pool.go
index 27dc1b0d1..77744f8f7 100644
--- a/core/transaction_pool.go
+++ b/core/transaction_pool.go
@@ -331,7 +331,7 @@ func (pool *TxPool) checkQueue() {
// current account nonce.
sort.Sort(addq)
for _, e := range addq {
- if e.AccountNonce > curnonce+1 {
+ if e.AccountNonce > curnonce {
break
}
delete(txs, e.hash)
diff --git a/core/transaction_pool_test.go b/core/transaction_pool_test.go
index ac297d266..b8bf78f00 100644
--- a/core/transaction_pool_test.go
+++ b/core/transaction_pool_test.go
@@ -201,3 +201,26 @@ func TestTransactionDoubleNonce(t *testing.T) {
t.Error("expected 2 pending txs. Got", len(pool.pending))
}
}
+
+func TestMissingNonce(t *testing.T) {
+ pool, key := setupTxPool()
+ addr := crypto.PubkeyToAddress(key.PublicKey)
+ pool.currentState().AddBalance(addr, big.NewInt(100000000000000))
+ tx := transaction()
+ tx.AccountNonce = 1
+ tx.GasLimit = big.NewInt(100000)
+ tx.SignECDSA(key)
+
+ err := pool.add(tx)
+ if err != nil {
+ t.Error("didn't expect error", err)
+ }
+
+ if len(pool.pending) != 0 {
+ t.Error("expected 0 pending transactions, got", len(pool.pending))
+ }
+
+ if len(pool.queue[addr]) != 1 {
+ t.Error("expected 1 queued transaction, got", len(pool.queue[addr]))
+ }
+}
diff --git a/eth/backend.go b/eth/backend.go
index 3956dfcaa..fcbea04a2 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -58,6 +58,7 @@ type Config struct {
Name string
ProtocolVersion int
NetworkId int
+ GenesisNonce int
BlockChainVersion int
SkipBcVersionCheck bool // e.g. blockchain export
@@ -284,7 +285,11 @@ func New(config *Config) (*Ethereum, error) {
}
eth.pow = ethash.New()
- eth.chainManager = core.NewChainManager(blockDb, stateDb, eth.pow, eth.EventMux())
+ genesis := core.GenesisBlock(uint64(config.GenesisNonce), stateDb)
+ eth.chainManager, err = core.NewChainManager(genesis, blockDb, stateDb, eth.pow, eth.EventMux())
+ if err != nil {
+ return nil, err
+ }
eth.downloader = downloader.New(eth.EventMux(), eth.chainManager.HasBlock, eth.chainManager.GetBlock)
eth.txPool = core.NewTxPool(eth.EventMux(), eth.chainManager.State, eth.chainManager.GasLimit)
eth.blockProcessor = core.NewBlockProcessor(stateDb, extraDb, eth.pow, eth.chainManager, eth.EventMux())
diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index 9f7f34559..92cb1a650 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -1,36 +1,33 @@
package downloader
import (
+ "bytes"
"errors"
"math/rand"
"sync"
"sync/atomic"
"time"
- "gopkg.in/fatih/set.v0"
-
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
+ "gopkg.in/fatih/set.v0"
)
-const (
+var (
MinHashFetch = 512 // Minimum amount of hashes to not consider a peer stalling
MaxHashFetch = 2048 // Amount of hashes to be fetched per retrieval request
MaxBlockFetch = 128 // Amount of blocks to be fetched per retrieval request
- peerCountTimeout = 12 * time.Second // Amount of time it takes for the peer handler to ignore minDesiredPeerCount
- hashTTL = 5 * time.Second // Time it takes for a hash request to time out
-)
+ hashTTL = 5 * time.Second // Time it takes for a hash request to time out
+ blockSoftTTL = 3 * time.Second // Request completion threshold for increasing or decreasing a peer's bandwidth
+ blockHardTTL = 3 * blockSoftTTL // Maximum time allowance before a block request is considered expired
+ crossCheckCycle = time.Second // Period after which to check for expired cross checks
-var (
- blockSoftTTL = 3 * time.Second // Request completion threshold for increasing or decreasing a peer's bandwidth
- blockHardTTL = 3 * blockSoftTTL // Maximum time allowance before a block request is considered expired
- crossCheckCycle = time.Second // Period after which to check for expired cross checks
- minDesiredPeerCount = 5 // Amount of peers desired to start syncing
+ maxBannedHashes = 4096 // Number of bannable hashes before phasing old ones out
)
var (
@@ -39,6 +36,7 @@ var (
errUnknownPeer = errors.New("peer is unknown or unhealthy")
ErrBadPeer = errors.New("action from bad peer ignored")
ErrStallingPeer = errors.New("peer is stalling")
+ errBannedHead = errors.New("peer head hash already banned")
errNoPeers = errors.New("no peers to keep download active")
ErrPendingQueue = errors.New("pending items in queue")
ErrTimeout = errors.New("timeout")
@@ -75,11 +73,10 @@ type crossCheck struct {
type Downloader struct {
mux *event.TypeMux
- mu sync.RWMutex
queue *queue // Scheduler for selecting the hashes to download
peers *peerSet // Set of active peers from which download can proceed
checks map[common.Hash]*crossCheck // Pending cross checks to verify a hash chain
- banned *set.SetNonTS // Set of hashes we've received and banned
+ banned *set.Set // Set of hashes we've received and banned
// Callbacks
hasBlock hashCheckFn
@@ -117,7 +114,7 @@ func New(mux *event.TypeMux, hasBlock hashCheckFn, getBlock getBlockFn) *Downloa
blockCh: make(chan blockPack, 1),
}
// Inject all the known bad hashes
- downloader.banned = set.NewNonTS()
+ downloader.banned = set.New()
for hash, _ := range core.BadHashes {
downloader.banned.Add(hash)
}
@@ -136,6 +133,12 @@ func (d *Downloader) Synchronising() bool {
// RegisterPeer injects a new download peer into the set of block source to be
// used for fetching hashes and blocks from.
func (d *Downloader) RegisterPeer(id string, head common.Hash, getHashes hashFetcherFn, getBlocks blockFetcherFn) error {
+ // If the peer wants to send a banned hash, reject
+ if d.banned.Has(head) {
+ glog.V(logger.Debug).Infoln("Register rejected, head hash banned:", id)
+ return errBannedHead
+ }
+ // Otherwise try to construct and register the peer
glog.V(logger.Detail).Infoln("Registering peer", id)
if err := d.peers.Register(newPeer(id, head, getHashes, getBlocks)); err != nil {
glog.V(logger.Error).Infoln("Register failed:", err)
@@ -165,6 +168,10 @@ func (d *Downloader) Synchronise(id string, hash common.Hash) error {
}
defer atomic.StoreInt32(&d.synchronising, 0)
+ // If the head hash is banned, terminate immediately
+ if d.banned.Has(hash) {
+ return ErrInvalidChain
+ }
// Post a user notification of the sync (only once per session)
if atomic.CompareAndSwapInt32(&d.notified, 0, 1) {
glog.V(logger.Info).Infoln("Block synchronisation started")
@@ -198,6 +205,8 @@ func (d *Downloader) TakeBlocks() []*Block {
return d.queue.TakeBlocks()
}
+// Has checks if the downloader knows about a particular hash, meaning that its
+// either already downloaded of pending retrieval.
func (d *Downloader) Has(hash common.Hash) bool {
return d.queue.Has(hash)
}
@@ -291,9 +300,14 @@ func (d *Downloader) fetchHashes(p *peer, h common.Hash) error {
glog.V(logger.Debug).Infof("Peer (%s) responded with empty hash set", active.id)
return ErrEmptyHashSet
}
- for _, hash := range hashPack.hashes {
+ for index, hash := range hashPack.hashes {
if d.banned.Has(hash) {
glog.V(logger.Debug).Infof("Peer (%s) sent a known invalid chain", active.id)
+
+ d.queue.Insert(hashPack.hashes[:index+1])
+ if err := d.banBlocks(active.id, hash); err != nil {
+ glog.V(logger.Debug).Infof("Failed to ban batch of blocks: %v", err)
+ }
return ErrInvalidChain
}
}
@@ -334,12 +348,12 @@ func (d *Downloader) fetchHashes(p *peer, h common.Hash) error {
active.getHashes(head)
continue
}
- // We're done, allocate the download cache and proceed pulling the blocks
+ // We're done, prepare the download cache and proceed pulling the blocks
offset := 0
if block := d.getBlock(head); block != nil {
offset = int(block.NumberU64() + 1)
}
- d.queue.Alloc(offset)
+ d.queue.Prepare(offset)
finished = true
case blockPack := <-d.blockCh:
@@ -401,21 +415,26 @@ func (d *Downloader) fetchBlocks() error {
glog.V(logger.Debug).Infoln("Downloading", d.queue.Pending(), "block(s)")
start := time.Now()
- // default ticker for re-fetching blocks every now and then
+ // Start a ticker to continue throttled downloads and check for bad peers
ticker := time.NewTicker(20 * time.Millisecond)
+ defer ticker.Stop()
+
out:
for {
select {
case <-d.cancelCh:
return errCancelBlockFetch
+ case <-d.hashCh:
+ // Out of bounds hashes received, ignore them
+
case blockPack := <-d.blockCh:
// Short circuit if it's a stale cross check
if len(blockPack.blocks) == 1 {
block := blockPack.blocks[0]
if _, ok := d.checks[block.Hash()]; ok {
delete(d.checks, block.Hash())
- continue
+ break
}
}
// If the peer was previously banned and failed to deliver it's pack
@@ -463,34 +482,25 @@ out:
glog.V(logger.Detail).Infof("%s: delivery partially failed: %v", peer, err)
}
}
+
case <-ticker.C:
- // Check for bad peers. Bad peers may indicate a peer not responding
- // to a `getBlocks` message. A timeout of 5 seconds is set. Peers
- // that badly or poorly behave are removed from the peer set (not banned).
- // Bad peers are excluded from the available peer set and therefor won't be
- // reused. XXX We could re-introduce peers after X time.
+ // Short circuit if we lost all our peers
+ if d.peers.Len() == 0 {
+ return errNoPeers
+ }
+ // Check for block request timeouts and demote the responsible peers
badPeers := d.queue.Expire(blockHardTTL)
for _, pid := range badPeers {
- // XXX We could make use of a reputation system here ranking peers
- // in their performance
- // 1) Time for them to respond;
- // 2) Measure their speed;
- // 3) Amount and availability.
if peer := d.peers.Peer(pid); peer != nil {
peer.Demote()
glog.V(logger.Detail).Infof("%s: block delivery timeout", peer)
}
}
- // After removing bad peers make sure we actually have sufficient peer left to keep downloading
- if d.peers.Len() == 0 {
- return errNoPeers
- }
- // If there are unrequested hashes left start fetching
- // from the available peers.
+ // If there are unrequested hashes left start fetching from the available peers
if d.queue.Pending() > 0 {
// Throttle the download if block cache is full and waiting processing
if d.queue.Throttle() {
- continue
+ break
}
// Send a download request to all idle peers, until throttled
idlePeers := d.peers.IdlePeers()
@@ -501,7 +511,7 @@ out:
}
// Get a possible chunk. If nil is returned no chunk
// could be returned due to no hashes available.
- request := d.queue.Reserve(peer)
+ request := d.queue.Reserve(peer, peer.Capacity())
if request == nil {
continue
}
@@ -531,10 +541,95 @@ out:
}
}
glog.V(logger.Detail).Infoln("Downloaded block(s) in", time.Since(start))
-
return nil
}
+// banBlocks retrieves a batch of blocks from a peer feeding us invalid hashes,
+// and bans the head of the retrieved batch.
+//
+// This method only fetches one single batch as the goal is not ban an entire
+// (potentially long) invalid chain - wasting a lot of time in the meanwhile -,
+// but rather to gradually build up a blacklist if the peer keeps reconnecting.
+func (d *Downloader) banBlocks(peerId string, head common.Hash) error {
+ glog.V(logger.Debug).Infof("Banning a batch out of %d blocks from %s", d.queue.Pending(), peerId)
+
+ // Ask the peer being banned for a batch of blocks from the banning point
+ peer := d.peers.Peer(peerId)
+ if peer == nil {
+ return nil
+ }
+ request := d.queue.Reserve(peer, MaxBlockFetch)
+ if request == nil {
+ return nil
+ }
+ if err := peer.Fetch(request); err != nil {
+ return err
+ }
+ // Wait a bit for the reply to arrive, and ban if done so
+ timeout := time.After(blockHardTTL)
+ for {
+ select {
+ case <-d.cancelCh:
+ return errCancelBlockFetch
+
+ case <-timeout:
+ return ErrTimeout
+
+ case <-d.hashCh:
+ // Out of bounds hashes received, ignore them
+
+ case blockPack := <-d.blockCh:
+ blocks := blockPack.blocks
+
+ // Short circuit if it's a stale cross check
+ if len(blocks) == 1 {
+ block := blocks[0]
+ if _, ok := d.checks[block.Hash()]; ok {
+ delete(d.checks, block.Hash())
+ break
+ }
+ }
+ // Short circuit if it's not from the peer being banned
+ if blockPack.peerId != peerId {
+ break
+ }
+ // Short circuit if no blocks were returned
+ if len(blocks) == 0 {
+ return errors.New("no blocks returned to ban")
+ }
+ // Reconstruct the original chain order and ensure we're banning the correct blocks
+ types.BlockBy(types.Number).Sort(blocks)
+ if bytes.Compare(blocks[0].Hash().Bytes(), head.Bytes()) != 0 {
+ return errors.New("head block not the banned one")
+ }
+ index := 0
+ for _, block := range blocks[1:] {
+ if bytes.Compare(block.ParentHash().Bytes(), blocks[index].Hash().Bytes()) != 0 {
+ break
+ }
+ index++
+ }
+ // Ban the head hash and phase out any excess
+ d.banned.Add(blocks[index].Hash())
+ for d.banned.Size() > maxBannedHashes {
+ var evacuate common.Hash
+
+ d.banned.Each(func(item interface{}) bool {
+ // Skip any hard coded bans
+ if core.BadHashes[item.(common.Hash)] {
+ return true
+ }
+ evacuate = item.(common.Hash)
+ return false
+ })
+ d.banned.Remove(evacuate)
+ }
+ glog.V(logger.Debug).Infof("Banned %d blocks from: %s", index+1, peerId)
+ return nil
+ }
+ }
+}
+
// DeliverBlocks injects a new batch of blocks received from a remote node.
// This is usually invoked through the BlocksMsg by the protocol handler.
func (d *Downloader) DeliverBlocks(id string, blocks []*types.Block) error {
diff --git a/eth/downloader/downloader_test.go b/eth/downloader/downloader_test.go
index ef94ddbab..5f10fb41f 100644
--- a/eth/downloader/downloader_test.go
+++ b/eth/downloader/downloader_test.go
@@ -7,6 +7,7 @@ import (
"time"
"github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
)
@@ -14,6 +15,7 @@ import (
var (
knownHash = common.Hash{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
unknownHash = common.Hash{9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9}
+ bannedHash = common.Hash{5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5}
)
func createHashes(start, amount int) (hashes []common.Hash) {
@@ -21,7 +23,7 @@ func createHashes(start, amount int) (hashes []common.Hash) {
hashes[len(hashes)-1] = knownHash
for i := range hashes[:len(hashes)-1] {
- binary.BigEndian.PutUint64(hashes[i][:8], uint64(i+2))
+ binary.BigEndian.PutUint64(hashes[i][:8], uint64(start+i+2))
}
return
}
@@ -56,7 +58,6 @@ type downloadTester struct {
maxHashFetch int // Overrides the maximum number of retrieved hashes
t *testing.T
- pcount int
done chan bool
activePeerId string
}
@@ -114,12 +115,6 @@ func (dl *downloadTester) syncTake(peerId string, head common.Hash) ([]*Block, e
return took, err
}
-func (dl *downloadTester) insertBlocks(blocks types.Blocks) {
- for _, block := range blocks {
- dl.chain = append(dl.chain, block.Hash())
- }
-}
-
func (dl *downloadTester) hasBlock(hash common.Hash) bool {
for _, h := range dl.chain {
if h == hash {
@@ -174,158 +169,131 @@ func (dl *downloadTester) getBlocks(id string) func([]common.Hash) error {
}
}
-func (dl *downloadTester) newPeer(id string, td *big.Int, hash common.Hash) {
- dl.pcount++
-
- dl.downloader.RegisterPeer(id, hash, dl.getHashes, dl.getBlocks(id))
-}
-
-func (dl *downloadTester) badBlocksPeer(id string, td *big.Int, hash common.Hash) {
- dl.pcount++
-
- // This bad peer never returns any blocks
- dl.downloader.RegisterPeer(id, hash, dl.getHashes, func([]common.Hash) error {
- return nil
- })
+// newPeer registers a new block download source into the syncer.
+func (dl *downloadTester) newPeer(id string, td *big.Int, hash common.Hash) error {
+ return dl.downloader.RegisterPeer(id, hash, dl.getHashes, dl.getBlocks(id))
}
-func TestDownload(t *testing.T) {
- minDesiredPeerCount = 4
- blockHardTTL = 1 * time.Second
-
- targetBlocks := 1000
+// Tests that simple synchronization, without throttling from a good peer works.
+func TestSynchronisation(t *testing.T) {
+ // Create a small enough block chain to download and the tester
+ targetBlocks := blockCacheLimit - 15
hashes := createHashes(0, targetBlocks)
blocks := createBlocksFromHashes(hashes)
- tester := newTester(t, hashes, blocks)
- tester.newPeer("peer1", big.NewInt(10000), hashes[0])
- tester.newPeer("peer2", big.NewInt(0), common.Hash{})
- tester.badBlocksPeer("peer3", big.NewInt(0), common.Hash{})
- tester.badBlocksPeer("peer4", big.NewInt(0), common.Hash{})
- tester.activePeerId = "peer1"
-
- err := tester.sync("peer1", hashes[0])
- if err != nil {
- t.Error("download error", err)
- }
-
- inqueue := len(tester.downloader.queue.blockCache)
- if inqueue != targetBlocks {
- t.Error("expected", targetBlocks, "have", inqueue)
- }
-}
-
-func TestMissing(t *testing.T) {
- targetBlocks := 1000
- hashes := createHashes(0, 1000)
- extraHashes := createHashes(1001, 1003)
- blocks := createBlocksFromHashes(append(extraHashes, hashes...))
tester := newTester(t, hashes, blocks)
+ tester.newPeer("peer", big.NewInt(10000), hashes[0])
- tester.newPeer("peer1", big.NewInt(10000), hashes[len(hashes)-1])
-
- hashes = append(extraHashes, hashes[:len(hashes)-1]...)
- tester.newPeer("peer2", big.NewInt(0), common.Hash{})
-
- err := tester.sync("peer1", hashes[0])
- if err != nil {
- t.Error("download error", err)
+ // Synchronise with the peer and make sure all blocks were retrieved
+ if err := tester.sync("peer", hashes[0]); err != nil {
+ t.Fatalf("failed to synchronise blocks: %v", err)
}
-
- inqueue := len(tester.downloader.queue.blockCache)
- if inqueue != targetBlocks {
- t.Error("expected", targetBlocks, "have", inqueue)
+ if queued := len(tester.downloader.queue.blockPool); queued != targetBlocks {
+ t.Fatalf("synchronised block mismatch: have %v, want %v", queued, targetBlocks)
}
}
-func TestTaking(t *testing.T) {
- minDesiredPeerCount = 4
- blockHardTTL = 1 * time.Second
-
- targetBlocks := 1000
+// Tests that the synchronized blocks can be correctly retrieved.
+func TestBlockTaking(t *testing.T) {
+ // Create a small enough block chain to download and the tester
+ targetBlocks := blockCacheLimit - 15
hashes := createHashes(0, targetBlocks)
blocks := createBlocksFromHashes(hashes)
- tester := newTester(t, hashes, blocks)
- tester.newPeer("peer1", big.NewInt(10000), hashes[0])
- tester.newPeer("peer2", big.NewInt(0), common.Hash{})
- tester.badBlocksPeer("peer3", big.NewInt(0), common.Hash{})
- tester.badBlocksPeer("peer4", big.NewInt(0), common.Hash{})
+ tester := newTester(t, hashes, blocks)
+ tester.newPeer("peer", big.NewInt(10000), hashes[0])
- err := tester.sync("peer1", hashes[0])
- if err != nil {
- t.Error("download error", err)
+ // Synchronise with the peer and test block retrieval
+ if err := tester.sync("peer", hashes[0]); err != nil {
+ t.Fatalf("failed to synchronise blocks: %v", err)
}
- bs := tester.downloader.TakeBlocks()
- if len(bs) != targetBlocks {
- t.Error("retrieved block mismatch: have %v, want %v", len(bs), targetBlocks)
+ if took := tester.downloader.TakeBlocks(); len(took) != targetBlocks {
+ t.Fatalf("took block mismatch: have %v, want %v", len(took), targetBlocks)
}
}
+// Tests that an inactive downloader will not accept incoming hashes and blocks.
func TestInactiveDownloader(t *testing.T) {
- targetBlocks := 1000
+ // Create a small enough block chain to download and the tester
+ targetBlocks := blockCacheLimit - 15
hashes := createHashes(0, targetBlocks)
blocks := createBlocksFromHashSet(createHashSet(hashes))
- tester := newTester(t, hashes, nil)
- err := tester.downloader.DeliverHashes("bad peer 001", hashes)
- if err != errNoSyncActive {
- t.Error("expected no sync error, got", err)
- }
+ tester := newTester(t, nil, nil)
- err = tester.downloader.DeliverBlocks("bad peer 001", blocks)
- if err != errNoSyncActive {
- t.Error("expected no sync error, got", err)
+ // Check that neither hashes nor blocks are accepted
+ if err := tester.downloader.DeliverHashes("bad peer", hashes); err != errNoSyncActive {
+ t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
+ }
+ if err := tester.downloader.DeliverBlocks("bad peer", blocks); err != errNoSyncActive {
+ t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
}
}
+// Tests that a canceled download wipes all previously accumulated state.
func TestCancel(t *testing.T) {
- minDesiredPeerCount = 4
- blockHardTTL = 1 * time.Second
-
- targetBlocks := 1000
+ // Create a small enough block chain to download and the tester
+ targetBlocks := blockCacheLimit - 15
hashes := createHashes(0, targetBlocks)
blocks := createBlocksFromHashes(hashes)
- tester := newTester(t, hashes, blocks)
- tester.newPeer("peer1", big.NewInt(10000), hashes[0])
+ tester := newTester(t, hashes, blocks)
+ tester.newPeer("peer", big.NewInt(10000), hashes[0])
- err := tester.sync("peer1", hashes[0])
- if err != nil {
- t.Error("download error", err)
+ // Synchronise with the peer, but cancel afterwards
+ if err := tester.sync("peer", hashes[0]); err != nil {
+ t.Fatalf("failed to synchronise blocks: %v", err)
}
-
if !tester.downloader.Cancel() {
- t.Error("cancel operation unsuccessfull")
+ t.Fatalf("cancel operation failed")
}
-
- hashSize, blockSize := tester.downloader.queue.Size()
- if hashSize > 0 || blockSize > 0 {
- t.Error("block (", blockSize, ") or hash (", hashSize, ") not 0")
+ // Make sure the queue reports empty and no blocks can be taken
+ hashCount, blockCount := tester.downloader.queue.Size()
+ if hashCount > 0 || blockCount > 0 {
+ t.Errorf("block or hash count mismatch: %d hashes, %d blocks, want 0", hashCount, blockCount)
+ }
+ if took := tester.downloader.TakeBlocks(); len(took) != 0 {
+ t.Errorf("taken blocks mismatch: have %d, want %d", len(took), 0)
}
}
+// Tests that if a large batch of blocks are being downloaded, it is throttled
+// until the cached blocks are retrieved.
func TestThrottling(t *testing.T) {
- minDesiredPeerCount = 4
- blockHardTTL = 1 * time.Second
-
- targetBlocks := 16 * blockCacheLimit
+ // Create a long block chain to download and the tester
+ targetBlocks := 8 * blockCacheLimit
hashes := createHashes(0, targetBlocks)
blocks := createBlocksFromHashes(hashes)
- tester := newTester(t, hashes, blocks)
- tester.newPeer("peer1", big.NewInt(10000), hashes[0])
- tester.newPeer("peer2", big.NewInt(0), common.Hash{})
- tester.badBlocksPeer("peer3", big.NewInt(0), common.Hash{})
- tester.badBlocksPeer("peer4", big.NewInt(0), common.Hash{})
+ tester := newTester(t, hashes, blocks)
+ tester.newPeer("peer", big.NewInt(10000), hashes[0])
- // Concurrently download and take the blocks
- took, err := tester.syncTake("peer1", hashes[0])
- if err != nil {
- t.Fatalf("failed to synchronise blocks: %v", err)
+ // Start a synchronisation concurrently
+ errc := make(chan error)
+ go func() {
+ errc <- tester.sync("peer", hashes[0])
+ }()
+ // Iteratively take some blocks, always checking the retrieval count
+ for total := 0; total < targetBlocks; {
+ // Wait a bit for sync to complete
+ for start := time.Now(); time.Since(start) < 3*time.Second; {
+ time.Sleep(25 * time.Millisecond)
+ if len(tester.downloader.queue.blockPool) == blockCacheLimit {
+ break
+ }
+ }
+ // Fetch the next batch of blocks
+ took := tester.downloader.TakeBlocks()
+ if len(took) != blockCacheLimit {
+ t.Fatalf("block count mismatch: have %v, want %v", len(took), blockCacheLimit)
+ }
+ total += len(took)
+ if total > targetBlocks {
+ t.Fatalf("target block count mismatch: have %v, want %v", total, targetBlocks)
+ }
}
- if len(took) != targetBlocks {
- t.Fatalf("downloaded block mismatch: have %v, want %v", len(took), targetBlocks)
+ if err := <-errc; err != nil {
+ t.Fatalf("block synchronization failed: %v", err)
}
}
@@ -559,3 +527,86 @@ func TestMadeupParentBlockChainAttack(t *testing.T) {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}
+
+// Tests that if one/multiple malicious peers try to feed a banned blockchain to
+// the downloader, it will not keep refetching the same chain indefinitely, but
+// gradually block pieces of it, until it's head is also blocked.
+func TestBannedChainStarvationAttack(t *testing.T) {
+ // Construct a valid chain, but ban one of the hashes in it
+ hashes := createHashes(0, 8*blockCacheLimit)
+ hashes[len(hashes)/2+23] = bannedHash // weird index to have non multiple of ban chunk size
+
+ blocks := createBlocksFromHashes(hashes)
+
+ // Create the tester and ban the selected hash
+ tester := newTester(t, hashes, blocks)
+ tester.downloader.banned.Add(bannedHash)
+
+ // Iteratively try to sync, and verify that the banned hash list grows until
+ // the head of the invalid chain is blocked too.
+ tester.newPeer("attack", big.NewInt(10000), hashes[0])
+ for banned := tester.downloader.banned.Size(); ; {
+ // Try to sync with the attacker, check hash chain failure
+ if _, err := tester.syncTake("attack", hashes[0]); err != ErrInvalidChain {
+ t.Fatalf("synchronisation error mismatch: have %v, want %v", err, ErrInvalidChain)
+ }
+ // Check that the ban list grew with at least 1 new item, or all banned
+ bans := tester.downloader.banned.Size()
+ if bans < banned+1 {
+ if tester.downloader.banned.Has(hashes[0]) {
+ break
+ }
+ t.Fatalf("ban count mismatch: have %v, want %v+", bans, banned+1)
+ }
+ banned = bans
+ }
+ // Check that after banning an entire chain, bad peers get dropped
+ if err := tester.newPeer("new attacker", big.NewInt(10000), hashes[0]); err != errBannedHead {
+ t.Fatalf("peer registration mismatch: have %v, want %v", err, errBannedHead)
+ }
+ if peer := tester.downloader.peers.Peer("net attacker"); peer != nil {
+ t.Fatalf("banned attacker registered: %v", peer)
+ }
+}
+
+// Tests that if a peer sends excessively many/large invalid chains that are
+// gradually banned, it will have an upper limit on the consumed memory and also
+// the origin bad hashes will not be evacuated.
+func TestBannedChainMemoryExhaustionAttack(t *testing.T) {
+ // Reduce the test size a bit
+ MaxBlockFetch = 4
+ maxBannedHashes = 256
+
+ // Construct a banned chain with more chunks than the ban limit
+ hashes := createHashes(0, maxBannedHashes*MaxBlockFetch)
+ hashes[len(hashes)-1] = bannedHash // weird index to have non multiple of ban chunk size
+
+ blocks := createBlocksFromHashes(hashes)
+
+ // Create the tester and ban the selected hash
+ tester := newTester(t, hashes, blocks)
+ tester.downloader.banned.Add(bannedHash)
+
+ // Iteratively try to sync, and verify that the banned hash list grows until
+ // the head of the invalid chain is blocked too.
+ tester.newPeer("attack", big.NewInt(10000), hashes[0])
+ for {
+ // Try to sync with the attacker, check hash chain failure
+ if _, err := tester.syncTake("attack", hashes[0]); err != ErrInvalidChain {
+ t.Fatalf("synchronisation error mismatch: have %v, want %v", err, ErrInvalidChain)
+ }
+ // Short circuit if the entire chain was banned
+ if tester.downloader.banned.Has(hashes[0]) {
+ break
+ }
+ // Otherwise ensure we never exceed the memory allowance and the hard coded bans are untouched
+ if bans := tester.downloader.banned.Size(); bans > maxBannedHashes {
+ t.Fatalf("ban cap exceeded: have %v, want max %v", bans, maxBannedHashes)
+ }
+ for hash, _ := range core.BadHashes {
+ if !tester.downloader.banned.Has(hash) {
+ t.Fatalf("hard coded ban evacuated: %x", hash)
+ }
+ }
+ }
+}
diff --git a/eth/downloader/peer.go b/eth/downloader/peer.go
index 5fbc64648..9614a6951 100644
--- a/eth/downloader/peer.go
+++ b/eth/downloader/peer.go
@@ -94,7 +94,7 @@ func (p *peer) SetIdle() {
for {
// Calculate the new download bandwidth allowance
prev := atomic.LoadInt32(&p.capacity)
- next := int32(math.Max(1, math.Min(MaxBlockFetch, float64(prev)*scale)))
+ next := int32(math.Max(1, math.Min(float64(MaxBlockFetch), float64(prev)*scale)))
// Try to update the old value
if atomic.CompareAndSwapInt32(&p.capacity, prev, next) {
diff --git a/eth/downloader/queue.go b/eth/downloader/queue.go
index 671ffe51b..7abbd42fd 100644
--- a/eth/downloader/queue.go
+++ b/eth/downloader/queue.go
@@ -16,7 +16,7 @@ import (
"gopkg.in/karalabe/cookiejar.v2/collections/prque"
)
-const (
+var (
blockCacheLimit = 8 * MaxBlockFetch // Maximum number of blocks to cache before throttling the download
)
@@ -50,10 +50,11 @@ type queue struct {
// newQueue creates a new download queue for scheduling block retrieval.
func newQueue() *queue {
return &queue{
- hashPool: make(map[common.Hash]int),
- hashQueue: prque.New(),
- pendPool: make(map[string]*fetchRequest),
- blockPool: make(map[common.Hash]int),
+ hashPool: make(map[common.Hash]int),
+ hashQueue: prque.New(),
+ pendPool: make(map[string]*fetchRequest),
+ blockPool: make(map[common.Hash]int),
+ blockCache: make([]*Block, blockCacheLimit),
}
}
@@ -70,7 +71,7 @@ func (q *queue) Reset() {
q.blockPool = make(map[common.Hash]int)
q.blockOffset = 0
- q.blockCache = nil
+ q.blockCache = make([]*Block, blockCacheLimit)
}
// Size retrieves the number of hashes in the queue, returning separately for
@@ -208,7 +209,7 @@ func (q *queue) TakeBlocks() []*Block {
// Reserve reserves a set of hashes for the given peer, skipping any previously
// failed download.
-func (q *queue) Reserve(p *peer) *fetchRequest {
+func (q *queue) Reserve(p *peer, count int) *fetchRequest {
q.lock.Lock()
defer q.lock.Unlock()
@@ -229,8 +230,7 @@ func (q *queue) Reserve(p *peer) *fetchRequest {
send := make(map[common.Hash]int)
skip := make(map[common.Hash]int)
- capacity := p.Capacity()
- for proc := 0; proc < space && len(send) < capacity && !q.hashQueue.Empty(); proc++ {
+ for proc := 0; proc < space && len(send) < count && !q.hashQueue.Empty(); proc++ {
hash, priority := q.hashQueue.Pop()
if p.ignored.Has(hash) {
skip[hash.(common.Hash)] = int(priority)
@@ -345,20 +345,12 @@ func (q *queue) Deliver(id string, blocks []*types.Block) (err error) {
return nil
}
-// Alloc ensures that the block cache is the correct size, given a starting
-// offset, and a memory cap.
-func (q *queue) Alloc(offset int) {
+// Prepare configures the block cache offset to allow accepting inbound blocks.
+func (q *queue) Prepare(offset int) {
q.lock.Lock()
defer q.lock.Unlock()
if q.blockOffset < offset {
q.blockOffset = offset
}
- size := len(q.hashPool)
- if size > blockCacheLimit {
- size = blockCacheLimit
- }
- if len(q.blockCache) < size {
- q.blockCache = append(q.blockCache, make([]*Block, size-len(q.blockCache))...)
- }
}
diff --git a/eth/handler.go b/eth/handler.go
index 15381b447..64f89b273 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -212,8 +212,8 @@ func (self *ProtocolManager) handleMsg(p *peer) error {
return errResp(ErrDecode, "->msg %v: %v", msg, err)
}
- if request.Amount > downloader.MaxHashFetch {
- request.Amount = downloader.MaxHashFetch
+ if request.Amount > uint64(downloader.MaxHashFetch) {
+ request.Amount = uint64(downloader.MaxHashFetch)
}
hashes := self.chainman.GetBlockHashesFromHash(request.Hash, request.Amount)
diff --git a/eth/peer.go b/eth/peer.go
index 5a59c1a40..cf2c58ec9 100644
--- a/eth/peer.go
+++ b/eth/peer.go
@@ -109,7 +109,7 @@ func (p *peer) sendTransaction(tx *types.Transaction) error {
func (p *peer) requestHashes(from common.Hash) error {
glog.V(logger.Debug).Infof("[%s] fetching hashes (%d) %x...\n", p.id, downloader.MaxHashFetch, from[:4])
- return p2p.Send(p.rw, GetBlockHashesMsg, getBlockHashesMsgData{from, downloader.MaxHashFetch})
+ return p2p.Send(p.rw, GetBlockHashesMsg, getBlockHashesMsgData{from, uint64(downloader.MaxHashFetch)})
}
func (p *peer) requestBlocks(hashes []common.Hash) error {
diff --git a/miner/worker.go b/miner/worker.go
index 1580d4d42..611445529 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -352,7 +352,7 @@ func (self *worker) isBlockLocallyMined(deepBlockNum uint64) bool {
//Does the block at {deepBlockNum} send earnings to my coinbase?
var block = self.chain.GetBlockByNumber(deepBlockNum)
- return block.Header().Coinbase == self.coinbase
+ return block != nil && block.Header().Coinbase == self.coinbase
}
func (self *worker) logLocalMinedBlocks(previous *environment) {
generated by cgit (git 2.34.1) at 2024-11-14 07:14:19 +0800