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-rw-r--r--cmd/utils/flags.go2
-rw-r--r--core/types/block.go14
-rw-r--r--eth/downloader/downloader.go674
-rw-r--r--eth/downloader/downloader_test.go337
-rw-r--r--eth/downloader/peer.go92
-rw-r--r--eth/downloader/queue.go239
-rw-r--r--eth/fetcher/fetcher.go401
-rw-r--r--eth/fetcher/fetcher_test.go471
-rw-r--r--eth/handler.go62
-rw-r--r--eth/peer.go59
10 files changed, 2010 insertions, 341 deletions
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 5ebc4ea61..80805ca22 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -140,7 +140,7 @@ var (
}
EthVersionFlag = cli.IntFlag{
Name: "eth",
- Value: 61,
+ Value: 62,
Usage: "Highest eth protocol to advertise (temporary, dev option)",
}
diff --git a/core/types/block.go b/core/types/block.go
index 427a3e6cb..777ad9483 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -357,6 +357,20 @@ func (b *Block) WithMiningResult(nonce uint64, mixDigest common.Hash) *Block {
}
}
+// WithBody returns a new block with the given transaction and uncle contents.
+func (b *Block) WithBody(transactions []*Transaction, uncles []*Header) *Block {
+ block := &Block{
+ header: copyHeader(b.header),
+ transactions: make([]*Transaction, len(transactions)),
+ uncles: make([]*Header, len(uncles)),
+ }
+ copy(block.transactions, transactions)
+ for i := range uncles {
+ block.uncles[i] = copyHeader(uncles[i])
+ }
+ return block
+}
+
// Implement pow.Block
func (b *Block) Hash() common.Hash {
diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index b28879ee6..0e8529756 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -26,12 +26,10 @@ 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"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
- "gopkg.in/fatih/set.v0"
)
const (
@@ -40,40 +38,44 @@ const (
)
var (
- MinHashFetch = 512 // Minimum amount of hashes to not consider a peer stalling
MaxHashFetch = 512 // Amount of hashes to be fetched per retrieval request
MaxBlockFetch = 128 // Amount of blocks to be fetched per retrieval request
- MaxHeaderFetch = 256 // Amount of block headers to be fetched per retrieval request
+ MaxHeaderFetch = 192 // Amount of block headers to be fetched per retrieval request
+ MaxBodyFetch = 128 // Amount of block bodies to be fetched per retrieval request
MaxStateFetch = 384 // Amount of node state values to allow fetching per request
MaxReceiptsFetch = 384 // Amount of transaction receipts to allow fetching per request
- 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
+ hashTTL = 5 * time.Second // [eth/61] Time it takes for a hash request to time out
+ blockSoftTTL = 3 * time.Second // [eth/61] Request completion threshold for increasing or decreasing a peer's bandwidth
+ blockHardTTL = 3 * blockSoftTTL // [eth/61] Maximum time allowance before a block request is considered expired
+ headerTTL = 5 * time.Second // [eth/62] Time it takes for a header request to time out
+ bodySoftTTL = 3 * time.Second // [eth/62] Request completion threshold for increasing or decreasing a peer's bandwidth
+ bodyHardTTL = 3 * bodySoftTTL // [eth/62] Maximum time allowance before a block body request is considered expired
- maxQueuedHashes = 256 * 1024 // Maximum number of hashes to queue for import (DOS protection)
- maxBannedHashes = 4096 // Number of bannable hashes before phasing old ones out
- maxBlockProcess = 256 // Number of blocks to import at once into the chain
+ maxQueuedHashes = 256 * 1024 // [eth/61] Maximum number of hashes to queue for import (DOS protection)
+ maxQueuedHeaders = 256 * 1024 // [eth/62] Maximum number of headers to queue for import (DOS protection)
+ maxBlockProcess = 256 // Number of blocks to import at once into the chain
)
var (
- errBusy = errors.New("busy")
- 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")
- errEmptyHashSet = errors.New("empty hash set by peer")
- errPeersUnavailable = errors.New("no peers available or all peers tried for block download process")
- errAlreadyInPool = errors.New("hash already in pool")
- errInvalidChain = errors.New("retrieved hash chain is invalid")
- errCrossCheckFailed = errors.New("block cross-check failed")
- errCancelHashFetch = errors.New("hash fetching canceled (requested)")
- errCancelBlockFetch = errors.New("block downloading canceled (requested)")
- errNoSyncActive = errors.New("no sync active")
+ errBusy = errors.New("busy")
+ errUnknownPeer = errors.New("peer is unknown or unhealthy")
+ errBadPeer = errors.New("action from bad peer ignored")
+ errStallingPeer = errors.New("peer is stalling")
+ errNoPeers = errors.New("no peers to keep download active")
+ errPendingQueue = errors.New("pending items in queue")
+ errTimeout = errors.New("timeout")
+ errEmptyHashSet = errors.New("empty hash set by peer")
+ errEmptyHeaderSet = errors.New("empty header set by peer")
+ errPeersUnavailable = errors.New("no peers available or all peers tried for block download process")
+ errAlreadyInPool = errors.New("hash already in pool")
+ errInvalidChain = errors.New("retrieved hash chain is invalid")
+ errInvalidBody = errors.New("retrieved block body is invalid")
+ errCancelHashFetch = errors.New("hash fetching canceled (requested)")
+ errCancelBlockFetch = errors.New("block downloading canceled (requested)")
+ errCancelHeaderFetch = errors.New("block header fetching canceled (requested)")
+ errCancelBodyFetch = errors.New("block body downloading canceled (requested)")
+ errNoSyncActive = errors.New("no sync active")
)
// hashCheckFn is a callback type for verifying a hash's presence in the local chain.
@@ -91,28 +93,36 @@ type chainInsertFn func(types.Blocks) (int, error)
// peerDropFn is a callback type for dropping a peer detected as malicious.
type peerDropFn func(id string)
+// hashPack is a batch of block hashes returned by a peer (eth/61).
+type hashPack struct {
+ peerId string
+ hashes []common.Hash
+}
+
+// blockPack is a batch of blocks returned by a peer (eth/61).
type blockPack struct {
peerId string
blocks []*types.Block
}
-type hashPack struct {
- peerId string
- hashes []common.Hash
+// headerPack is a batch of block headers returned by a peer.
+type headerPack struct {
+ peerId string
+ headers []*types.Header
}
-type crossCheck struct {
- expire time.Time
- parent common.Hash
+// bodyPack is a batch of block bodies returned by a peer.
+type bodyPack struct {
+ peerId string
+ transactions [][]*types.Transaction
+ uncles [][]*types.Header
}
type Downloader struct {
mux *event.TypeMux
- 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.Set // Set of hashes we've received and banned
+ queue *queue // Scheduler for selecting the hashes to download
+ peers *peerSet // Set of active peers from which download can proceed
interrupt int32 // Atomic boolean to signal termination
@@ -137,12 +147,18 @@ type Downloader struct {
// Channels
newPeerCh chan *peer
- hashCh chan hashPack // Channel receiving inbound hashes
- blockCh chan blockPack // Channel receiving inbound blocks
- processCh chan bool // Channel to signal the block fetcher of new or finished work
+ hashCh chan hashPack // [eth/61] Channel receiving inbound hashes
+ blockCh chan blockPack // [eth/61] Channel receiving inbound blocks
+ headerCh chan headerPack // [eth/62] Channel receiving inbound block headers
+ bodyCh chan bodyPack // [eth/62] Channel receiving inbound block bodies
+ processCh chan bool // Channel to signal the block fetcher of new or finished work
cancelCh chan struct{} // Channel to cancel mid-flight syncs
cancelLock sync.RWMutex // Lock to protect the cancel channel in delivers
+
+ // Testing hooks
+ bodyFetchHook func([]*types.Header) // Method to call upon starting a block body fetch
+ chainInsertHook func([]*Block) // Method to call upon inserting a chain of blocks (possibly in multiple invocations)
}
// Block is an origin-tagged blockchain block.
@@ -153,8 +169,7 @@ type Block struct {
// New creates a new downloader to fetch hashes and blocks from remote peers.
func New(mux *event.TypeMux, hasBlock hashCheckFn, getBlock blockRetrievalFn, headBlock headRetrievalFn, insertChain chainInsertFn, dropPeer peerDropFn) *Downloader {
- // Create the base downloader
- downloader := &Downloader{
+ return &Downloader{
mux: mux,
queue: newQueue(),
peers: newPeerSet(),
@@ -166,14 +181,10 @@ func New(mux *event.TypeMux, hasBlock hashCheckFn, getBlock blockRetrievalFn, he
newPeerCh: make(chan *peer, 1),
hashCh: make(chan hashPack, 1),
blockCh: make(chan blockPack, 1),
+ headerCh: make(chan headerPack, 1),
+ bodyCh: make(chan bodyPack, 1),
processCh: make(chan bool, 1),
}
- // Inject all the known bad hashes
- downloader.banned = set.New()
- for hash, _ := range core.BadHashes {
- downloader.banned.Add(hash)
- }
- return downloader
}
// Stats retrieves the current status of the downloader.
@@ -206,15 +217,12 @@ 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, version int, head common.Hash, getRelHashes relativeHashFetcherFn, getAbsHashes absoluteHashFetcherFn, 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
+func (d *Downloader) RegisterPeer(id string, version int, head common.Hash,
+ getRelHashes relativeHashFetcherFn, getAbsHashes absoluteHashFetcherFn, getBlocks blockFetcherFn, // eth/61 callbacks, remove when upgrading
+ getRelHeaders relativeHeaderFetcherFn, getAbsHeaders absoluteHeaderFetcherFn, getBlockBodies blockBodyFetcherFn) error {
+
glog.V(logger.Detail).Infoln("Registering peer", id)
- if err := d.peers.Register(newPeer(id, version, head, getRelHashes, getAbsHashes, getBlocks)); err != nil {
+ if err := d.peers.Register(newPeer(id, version, head, getRelHashes, getAbsHashes, getBlocks, getRelHeaders, getAbsHeaders, getBlockBodies)); err != nil {
glog.V(logger.Error).Infoln("Register failed:", err)
return err
}
@@ -235,7 +243,7 @@ func (d *Downloader) UnregisterPeer(id string) error {
// Synchronise tries to sync up our local block chain with a remote peer, both
// adding various sanity checks as well as wrapping it with various log entries.
func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int) {
- glog.V(logger.Detail).Infof("Attempting synchronisation: %v, head 0x%x, TD %v", id, head[:4], td)
+ glog.V(logger.Detail).Infof("Attempting synchronisation: %v, head [%x…], TD %v", id, head[:4], td)
switch err := d.synchronise(id, head, td); err {
case nil:
@@ -244,7 +252,7 @@ func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int) {
case errBusy:
glog.V(logger.Detail).Infof("Synchronisation already in progress")
- case errTimeout, errBadPeer, errStallingPeer, errBannedHead, errEmptyHashSet, errPeersUnavailable, errInvalidChain, errCrossCheckFailed:
+ case errTimeout, errBadPeer, errStallingPeer, errEmptyHashSet, errEmptyHeaderSet, errPeersUnavailable, errInvalidChain:
glog.V(logger.Debug).Infof("Removing peer %v: %v", id, err)
d.dropPeer(id)
@@ -270,10 +278,6 @@ func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int) error
}
defer atomic.StoreInt32(&d.synchronising, 0)
- // If the head hash is banned, terminate immediately
- if d.banned.Has(hash) {
- return errBannedHead
- }
// 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")
@@ -285,7 +289,6 @@ func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int) error
// Reset the queue and peer set to clean any internal leftover state
d.queue.Reset()
d.peers.Reset()
- d.checks = make(map[common.Hash]*crossCheck)
// Create cancel channel for aborting mid-flight
d.cancelLock.Lock()
@@ -320,17 +323,37 @@ func (d *Downloader) syncWithPeer(p *peer, hash common.Hash, td *big.Int) (err e
}
}()
- glog.V(logger.Debug).Infof("Synchronizing with the network using: %s, eth/%d", p.id, p.version)
- switch p.version {
- case eth61:
+ glog.V(logger.Debug).Infof("Synchronising with the network using: %s [eth/%d]", p.id, p.version)
+ defer glog.V(logger.Debug).Infof("Synchronisation terminated")
+
+ switch {
+ case p.version == eth61:
// Old eth/61, use forward, concurrent hash and block retrieval algorithm
+ number, err := d.findAncestor61(p)
+ if err != nil {
+ return err
+ }
+ errc := make(chan error, 2)
+ go func() { errc <- d.fetchHashes61(p, td, number+1) }()
+ go func() { errc <- d.fetchBlocks61(number + 1) }()
+
+ // If any fetcher fails, cancel the other
+ if err := <-errc; err != nil {
+ d.cancel()
+ <-errc
+ return err
+ }
+ return <-errc
+
+ case p.version >= eth62:
+ // New eth/62, use forward, concurrent header and block body retrieval algorithm
number, err := d.findAncestor(p)
if err != nil {
return err
}
errc := make(chan error, 2)
- go func() { errc <- d.fetchHashes(p, td, number+1) }()
- go func() { errc <- d.fetchBlocks(number + 1) }()
+ go func() { errc <- d.fetchHeaders(p, td, number+1) }()
+ go func() { errc <- d.fetchBodies(number + 1) }()
// If any fetcher fails, cancel the other
if err := <-errc; err != nil {
@@ -373,17 +396,17 @@ func (d *Downloader) Terminate() {
d.cancel()
}
-// findAncestor tries to locate the common ancestor block of the local chain and
+// findAncestor61 tries to locate the common ancestor block of the local chain and
// a remote peers blockchain. In the general case when our node was in sync and
// on the correct chain, checking the top N blocks should already get us a match.
-// In the rare scenario when we ended up on a long soft fork (i.e. none of the
-// head blocks match), we do a binary search to find the common ancestor.
-func (d *Downloader) findAncestor(p *peer) (uint64, error) {
+// In the rare scenario when we ended up on a long reorganization (i.e. none of
+// the head blocks match), we do a binary search to find the common ancestor.
+func (d *Downloader) findAncestor61(p *peer) (uint64, error) {
glog.V(logger.Debug).Infof("%v: looking for common ancestor", p)
// Request out head blocks to short circuit ancestor location
head := d.headBlock().NumberU64()
- from := int64(head) - int64(MaxHashFetch)
+ from := int64(head) - int64(MaxHashFetch) + 1
if from < 0 {
from = 0
}
@@ -422,6 +445,12 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
case <-d.blockCh:
// Out of bounds blocks received, ignore them
+ case <-d.headerCh:
+ // Out of bounds eth/62 block headers received, ignore them
+
+ case <-d.bodyCh:
+ // Out of bounds eth/62 block bodies received, ignore them
+
case <-timeout:
glog.V(logger.Debug).Infof("%v: head hash timeout", p)
return 0, errTimeout
@@ -429,7 +458,7 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
}
// If the head fetch already found an ancestor, return
if !common.EmptyHash(hash) {
- glog.V(logger.Debug).Infof("%v: common ancestor: #%d [%x]", p, number, hash[:4])
+ glog.V(logger.Debug).Infof("%v: common ancestor: #%d [%x…]", p, number, hash[:4])
return number, nil
}
// Ancestor not found, we need to binary search over our chain
@@ -468,7 +497,7 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
break
}
if block.NumberU64() != check {
- glog.V(logger.Debug).Infof("%v: non requested hash #%d [%x], instead of #%d", p, block.NumberU64(), block.Hash().Bytes()[:4], check)
+ glog.V(logger.Debug).Infof("%v: non requested hash #%d [%x…], instead of #%d", p, block.NumberU64(), block.Hash().Bytes()[:4], check)
return 0, errBadPeer
}
start = check
@@ -476,6 +505,12 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
case <-d.blockCh:
// Out of bounds blocks received, ignore them
+ case <-d.headerCh:
+ // Out of bounds eth/62 block headers received, ignore them
+
+ case <-d.bodyCh:
+ // Out of bounds eth/62 block bodies received, ignore them
+
case <-timeout:
glog.V(logger.Debug).Infof("%v: search hash timeout", p)
return 0, errTimeout
@@ -485,9 +520,9 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
return start, nil
}
-// fetchHashes keeps retrieving hashes from the requested number, until no more
+// fetchHashes61 keeps retrieving hashes from the requested number, until no more
// are returned, potentially throttling on the way.
-func (d *Downloader) fetchHashes(p *peer, td *big.Int, from uint64) error {
+func (d *Downloader) fetchHashes61(p *peer, td *big.Int, from uint64) error {
glog.V(logger.Debug).Infof("%v: downloading hashes from #%d", p, from)
// Create a timeout timer, and the associated hash fetcher
@@ -510,6 +545,12 @@ func (d *Downloader) fetchHashes(p *peer, td *big.Int, from uint64) error {
case <-d.cancelCh:
return errCancelHashFetch
+ case <-d.headerCh:
+ // Out of bounds eth/62 block headers received, ignore them
+
+ case <-d.bodyCh:
+ // Out of bounds eth/62 block bodies received, ignore them
+
case hashPack := <-d.hashCh:
// Make sure the active peer is giving us the hashes
if hashPack.peerId != p.id {
@@ -548,7 +589,7 @@ func (d *Downloader) fetchHashes(p *peer, td *big.Int, from uint64) error {
// Otherwise insert all the new hashes, aborting in case of junk
glog.V(logger.Detail).Infof("%v: inserting %d hashes from #%d", p, len(hashPack.hashes), from)
- inserts := d.queue.Insert(hashPack.hashes, true)
+ inserts := d.queue.Insert61(hashPack.hashes, true)
if len(inserts) != len(hashPack.hashes) {
glog.V(logger.Debug).Infof("%v: stale hashes", p)
return errBadPeer
@@ -573,10 +614,10 @@ func (d *Downloader) fetchHashes(p *peer, td *big.Int, from uint64) error {
}
}
-// fetchBlocks iteratively downloads the scheduled hashes, taking any available
+// fetchBlocks61 iteratively downloads the scheduled hashes, taking any available
// peers, reserving a chunk of blocks for each, waiting for delivery and also
// periodically checking for timeouts.
-func (d *Downloader) fetchBlocks(from uint64) error {
+func (d *Downloader) fetchBlocks61(from uint64) error {
glog.V(logger.Debug).Infof("Downloading blocks from #%d", from)
defer glog.V(logger.Debug).Infof("Block download terminated")
@@ -595,24 +636,30 @@ func (d *Downloader) fetchBlocks(from uint64) error {
case <-d.cancelCh:
return errCancelBlockFetch
+ case <-d.headerCh:
+ // Out of bounds eth/62 block headers received, ignore them
+
+ case <-d.bodyCh:
+ // Out of bounds eth/62 block bodies received, ignore them
+
case blockPack := <-d.blockCh:
// If the peer was previously banned and failed to deliver it's pack
// in a reasonable time frame, ignore it's message.
if peer := d.peers.Peer(blockPack.peerId); peer != nil {
// Deliver the received chunk of blocks, and demote in case of errors
- err := d.queue.Deliver(blockPack.peerId, blockPack.blocks)
+ err := d.queue.Deliver61(blockPack.peerId, blockPack.blocks)
switch err {
case nil:
// If no blocks were delivered, demote the peer (need the delivery above)
if len(blockPack.blocks) == 0 {
peer.Demote()
- peer.SetIdle()
+ peer.SetIdle61()
glog.V(logger.Detail).Infof("%s: no blocks delivered", peer)
break
}
// All was successful, promote the peer and potentially start processing
peer.Promote()
- peer.SetIdle()
+ peer.SetIdle61()
glog.V(logger.Detail).Infof("%s: delivered %d blocks", peer, len(blockPack.blocks))
go d.process()
@@ -624,7 +671,7 @@ func (d *Downloader) fetchBlocks(from uint64) error {
// Peer probably timed out with its delivery but came through
// in the end, demote, but allow to to pull from this peer.
peer.Demote()
- peer.SetIdle()
+ peer.SetIdle61()
glog.V(logger.Detail).Infof("%s: out of bound delivery", peer)
case errStaleDelivery:
@@ -638,7 +685,7 @@ func (d *Downloader) fetchBlocks(from uint64) error {
default:
// Peer did something semi-useful, demote but keep it around
peer.Demote()
- peer.SetIdle()
+ peer.SetIdle61()
glog.V(logger.Detail).Infof("%s: delivery partially failed: %v", peer, err)
go d.process()
}
@@ -696,7 +743,7 @@ func (d *Downloader) fetchBlocks(from uint64) error {
// Reserve a chunk of hashes for a peer. A nil can mean either that
// no more hashes are available, or that the peer is known not to
// have them.
- request := d.queue.Reserve(peer, peer.Capacity())
+ request := d.queue.Reserve61(peer, peer.Capacity())
if request == nil {
continue
}
@@ -704,7 +751,7 @@ func (d *Downloader) fetchBlocks(from uint64) error {
glog.Infof("%s: requesting %d blocks", peer, len(request.Hashes))
}
// Fetch the chunk and make sure any errors return the hashes to the queue
- if err := peer.Fetch(request); err != nil {
+ if err := peer.Fetch61(request); err != nil {
glog.V(logger.Error).Infof("%v: fetch failed, rescheduling", peer)
d.queue.Cancel(request)
}
@@ -718,6 +765,401 @@ func (d *Downloader) fetchBlocks(from uint64) error {
}
}
+// findAncestor tries to locate the common ancestor block of the local chain and
+// a remote peers blockchain. In the general case when our node was in sync and
+// on the correct chain, checking the top N blocks should already get us a match.
+// In the rare scenario when we ended up on a long reorganization (i.e. none of
+// the head blocks match), we do a binary search to find the common ancestor.
+func (d *Downloader) findAncestor(p *peer) (uint64, error) {
+ glog.V(logger.Debug).Infof("%v: looking for common ancestor", p)
+
+ // Request our head blocks to short circuit ancestor location
+ head := d.headBlock().NumberU64()
+ from := int64(head) - int64(MaxHeaderFetch) + 1
+ if from < 0 {
+ from = 0
+ }
+ go p.getAbsHeaders(uint64(from), MaxHeaderFetch, 0, false)
+
+ // Wait for the remote response to the head fetch
+ number, hash := uint64(0), common.Hash{}
+ timeout := time.After(hashTTL)
+
+ for finished := false; !finished; {
+ select {
+ case <-d.cancelCh:
+ return 0, errCancelHashFetch
+
+ case headerPack := <-d.headerCh:
+ // Discard anything not from the origin peer
+ if headerPack.peerId != p.id {
+ glog.V(logger.Debug).Infof("Received headers from incorrect peer(%s)", headerPack.peerId)
+ break
+ }
+ // Make sure the peer actually gave something valid
+ headers := headerPack.headers
+ if len(headers) == 0 {
+ glog.V(logger.Debug).Infof("%v: empty head header set", p)
+ return 0, errEmptyHeaderSet
+ }
+ // Check if a common ancestor was found
+ finished = true
+ for i := len(headers) - 1; i >= 0; i-- {
+ if d.hasBlock(headers[i].Hash()) {
+ number, hash = headers[i].Number.Uint64(), headers[i].Hash()
+ break
+ }
+ }
+
+ case <-d.bodyCh:
+ // Out of bounds block bodies received, ignore them
+
+ case <-d.hashCh:
+ // Out of bounds eth/61 hashes received, ignore them
+
+ case <-d.blockCh:
+ // Out of bounds eth/61 blocks received, ignore them
+
+ case <-timeout:
+ glog.V(logger.Debug).Infof("%v: head header timeout", p)
+ return 0, errTimeout
+ }
+ }
+ // If the head fetch already found an ancestor, return
+ if !common.EmptyHash(hash) {
+ glog.V(logger.Debug).Infof("%v: common ancestor: #%d [%x…]", p, number, hash[:4])
+ return number, nil
+ }
+ // Ancestor not found, we need to binary search over our chain
+ start, end := uint64(0), head
+ for start+1 < end {
+ // Split our chain interval in two, and request the hash to cross check
+ check := (start + end) / 2
+
+ timeout := time.After(hashTTL)
+ go p.getAbsHeaders(uint64(check), 1, 0, false)
+
+ // Wait until a reply arrives to this request
+ for arrived := false; !arrived; {
+ select {
+ case <-d.cancelCh:
+ return 0, errCancelHashFetch
+
+ case headerPack := <-d.headerCh:
+ // Discard anything not from the origin peer
+ if headerPack.peerId != p.id {
+ glog.V(logger.Debug).Infof("Received headers from incorrect peer(%s)", headerPack.peerId)
+ break
+ }
+ // Make sure the peer actually gave something valid
+ headers := headerPack.headers
+ if len(headers) != 1 {
+ glog.V(logger.Debug).Infof("%v: invalid search header set (%d)", p, len(headers))
+ return 0, errBadPeer
+ }
+ arrived = true
+
+ // Modify the search interval based on the response
+ block := d.getBlock(headers[0].Hash())
+ if block == nil {
+ end = check
+ break
+ }
+ if block.NumberU64() != check {
+ glog.V(logger.Debug).Infof("%v: non requested header #%d [%x…], instead of #%d", p, block.NumberU64(), block.Hash().Bytes()[:4], check)
+ return 0, errBadPeer
+ }
+ start = check
+
+ case <-d.bodyCh:
+ // Out of bounds block bodies received, ignore them
+
+ case <-d.hashCh:
+ // Out of bounds eth/61 hashes received, ignore them
+
+ case <-d.blockCh:
+ // Out of bounds eth/61 blocks received, ignore them
+
+ case <-timeout:
+ glog.V(logger.Debug).Infof("%v: search header timeout", p)
+ return 0, errTimeout
+ }
+ }
+ }
+ return start, nil
+}
+
+// fetchHeaders keeps retrieving headers from the requested number, until no more
+// are returned, potentially throttling on the way.
+func (d *Downloader) fetchHeaders(p *peer, td *big.Int, from uint64) error {
+ glog.V(logger.Debug).Infof("%v: downloading headers from #%d", p, from)
+ defer glog.V(logger.Debug).Infof("%v: header download terminated", p)
+
+ // Create a timeout timer, and the associated hash fetcher
+ timeout := time.NewTimer(0) // timer to dump a non-responsive active peer
+ <-timeout.C // timeout channel should be initially empty
+ defer timeout.Stop()
+
+ getHeaders := func(from uint64) {
+ glog.V(logger.Detail).Infof("%v: fetching %d headers from #%d", p, MaxHeaderFetch, from)
+
+ go p.getAbsHeaders(from, MaxHeaderFetch, 0, false)
+ timeout.Reset(headerTTL)
+ }
+ // Start pulling headers, until all are exhausted
+ getHeaders(from)
+ gotHeaders := false
+
+ for {
+ select {
+ case <-d.cancelCh:
+ return errCancelHeaderFetch
+
+ case <-d.hashCh:
+ // Out of bounds eth/61 hashes received, ignore them
+
+ case <-d.blockCh:
+ // Out of bounds eth/61 blocks received, ignore them
+
+ case headerPack := <-d.headerCh:
+ // Make sure the active peer is giving us the headers
+ if headerPack.peerId != p.id {
+ glog.V(logger.Debug).Infof("Received headers from incorrect peer (%s)", headerPack.peerId)
+ break
+ }
+ timeout.Stop()
+
+ // If no more headers are inbound, notify the body fetcher and return
+ if len(headerPack.headers) == 0 {
+ glog.V(logger.Debug).Infof("%v: no available headers", p)
+
+ select {
+ case d.processCh <- false:
+ case <-d.cancelCh:
+ }
+ // If no headers were retrieved at all, the peer violated it's TD promise that it had a
+ // better chain compared to ours. The only exception is if it's promised blocks were
+ // already imported by other means (e.g. fecher):
+ //
+ // R <remote peer>, L <local node>: Both at block 10
+ // R: Mine block 11, and propagate it to L
+ // L: Queue block 11 for import
+ // L: Notice that R's head and TD increased compared to ours, start sync
+ // L: Import of block 11 finishes
+ // L: Sync begins, and finds common ancestor at 11
+ // L: Request new headers up from 11 (R's TD was higher, it must have something)
+ // R: Nothing to give
+ if !gotHeaders && td.Cmp(d.headBlock().Td) > 0 {
+ return errStallingPeer
+ }
+ return nil
+ }
+ gotHeaders = true
+
+ // Otherwise insert all the new headers, aborting in case of junk
+ glog.V(logger.Detail).Infof("%v: inserting %d headers from #%d", p, len(headerPack.headers), from)
+
+ inserts := d.queue.Insert(headerPack.headers)
+ if len(inserts) != len(headerPack.headers) {
+ glog.V(logger.Debug).Infof("%v: stale headers", p)
+ return errBadPeer
+ }
+ // Notify the block fetcher of new headers, but stop if queue is full
+ cont := d.queue.Pending() < maxQueuedHeaders
+ select {
+ case d.processCh <- cont:
+ default:
+ }
+ if !cont {
+ return nil
+ }
+ // Queue not yet full, fetch the next batch
+ from += uint64(len(headerPack.headers))
+ getHeaders(from)
+
+ case <-timeout.C:
+ // Header retrieval timed out, consider the peer bad and drop
+ glog.V(logger.Debug).Infof("%v: header request timed out", p)
+ d.dropPeer(p.id)
+
+ // Finish the sync gracefully instead of dumping the gathered data though
+ select {
+ case d.processCh <- false:
+ default:
+ }
+ return nil
+ }
+ }
+}
+
+// fetchBodies iteratively downloads the scheduled block bodies, taking any
+// available peers, reserving a chunk of blocks for each, waiting for delivery
+// and also periodically checking for timeouts.
+func (d *Downloader) fetchBodies(from uint64) error {
+ glog.V(logger.Debug).Infof("Downloading block bodies from #%d", from)
+ defer glog.V(logger.Debug).Infof("Block body download terminated")
+
+ // Create a timeout timer for scheduling expiration tasks
+ ticker := time.NewTicker(100 * time.Millisecond)
+ defer ticker.Stop()
+
+ update := make(chan struct{}, 1)
+
+ // Prepare the queue and fetch block bodies until the block header fetcher's done
+ d.queue.Prepare(from)
+ finished := false
+
+ for {
+ select {
+ case <-d.cancelCh:
+ return errCancelBlockFetch
+
+ case <-d.hashCh:
+ // Out of bounds eth/61 hashes received, ignore them
+
+ case <-d.blockCh:
+ // Out of bounds eth/61 blocks received, ignore them
+
+ case bodyPack := <-d.bodyCh:
+ // If the peer was previously banned and failed to deliver it's pack
+ // in a reasonable time frame, ignore it's message.
+ if peer := d.peers.Peer(bodyPack.peerId); peer != nil {
+ // Deliver the received chunk of bodies, and demote in case of errors
+ err := d.queue.Deliver(bodyPack.peerId, bodyPack.transactions, bodyPack.uncles)
+ switch err {
+ case nil:
+ // If no blocks were delivered, demote the peer (need the delivery above)
+ if len(bodyPack.transactions) == 0 || len(bodyPack.uncles) == 0 {
+ peer.Demote()
+ peer.SetIdle()
+ glog.V(logger.Detail).Infof("%s: no block bodies delivered", peer)
+ break
+ }
+ // All was successful, promote the peer and potentially start processing
+ peer.Promote()
+ peer.SetIdle()
+ glog.V(logger.Detail).Infof("%s: delivered %d:%d block bodies", peer, len(bodyPack.transactions), len(bodyPack.uncles))
+ go d.process()
+
+ case errInvalidChain:
+ // The hash chain is invalid (blocks are not ordered properly), abort
+ return err
+
+ case errInvalidBody:
+ // The peer delivered something very bad, drop immediately
+ glog.V(logger.Error).Infof("%s: delivered invalid block, dropping", peer)
+ d.dropPeer(peer.id)
+
+ case errNoFetchesPending:
+ // Peer probably timed out with its delivery but came through
+ // in the end, demote, but allow to to pull from this peer.
+ peer.Demote()
+ peer.SetIdle()
+ glog.V(logger.Detail).Infof("%s: out of bound delivery", peer)
+
+ case errStaleDelivery:
+ // Delivered something completely else than requested, usually
+ // caused by a timeout and delivery during a new sync cycle.
+ // Don't set it to idle as the original request should still be
+ // in flight.
+ peer.Demote()
+ glog.V(logger.Detail).Infof("%s: stale delivery", peer)
+
+ default:
+ // Peer did something semi-useful, demote but keep it around
+ peer.Demote()
+ peer.SetIdle()
+ glog.V(logger.Detail).Infof("%s: delivery partially failed: %v", peer, err)
+ go d.process()
+ }
+ }
+ // Blocks assembled, try to update the progress
+ select {
+ case update <- struct{}{}:
+ default:
+ }
+
+ case cont := <-d.processCh:
+ // The header fetcher sent a continuation flag, check if it's done
+ if !cont {
+ finished = true
+ }
+ // Headers arrive, try to update the progress
+ select {
+ case update <- struct{}{}:
+ default:
+ }
+
+ case <-ticker.C:
+ // Sanity check update the progress
+ select {
+ case update <- struct{}{}:
+ default:
+ }
+
+ case <-update:
+ // Short circuit if we lost all our peers
+ if d.peers.Len() == 0 {
+ return errNoPeers
+ }
+ // Check for block body request timeouts and demote the responsible peers
+ for _, pid := range d.queue.Expire(bodyHardTTL) {
+ if peer := d.peers.Peer(pid); peer != nil {
+ peer.Demote()
+ glog.V(logger.Detail).Infof("%s: block body delivery timeout", peer)
+ }
+ }
+ // If there's noting more to fetch, wait or terminate
+ if d.queue.Pending() == 0 {
+ if d.queue.InFlight() == 0 && finished {
+ glog.V(logger.Debug).Infof("Block body fetching completed")
+ return nil
+ }
+ break
+ }
+ // Send a download request to all idle peers, until throttled
+ queuedEmptyBlocks, throttled := false, false
+ for _, peer := range d.peers.IdlePeers() {
+ // Short circuit if throttling activated
+ if d.queue.Throttle() {
+ throttled = true
+ break
+ }
+ // Reserve a chunk of hashes for a peer. A nil can mean either that
+ // no more hashes are available, or that the peer is known not to
+ // have them.
+ request, process, err := d.queue.Reserve(peer, peer.Capacity())
+ if err != nil {
+ return err
+ }
+ if process {
+ queuedEmptyBlocks = true
+ go d.process()
+ }
+ if request == nil {
+ continue
+ }
+ if glog.V(logger.Detail) {
+ glog.Infof("%s: requesting %d block bodies", peer, len(request.Headers))
+ }
+ // Fetch the chunk and make sure any errors return the hashes to the queue
+ if d.bodyFetchHook != nil {
+ d.bodyFetchHook(request.Headers)
+ }
+ if err := peer.Fetch(request); err != nil {
+ glog.V(logger.Error).Infof("%v: fetch failed, rescheduling", peer)
+ d.queue.Cancel(request)
+ }
+ }
+ // Make sure that we have peers available for fetching. If all peers have been tried
+ // and all failed throw an error
+ if !queuedEmptyBlocks && !throttled && d.queue.InFlight() == 0 {
+ return errPeersUnavailable
+ }
+ }
+ }
+}
+
// process takes blocks from the queue and tries to import them into the chain.
//
// The algorithmic flow is as follows:
@@ -763,6 +1205,9 @@ func (d *Downloader) process() {
if len(blocks) == 0 {
return
}
+ if d.chainInsertHook != nil {
+ d.chainInsertHook(blocks)
+ }
// Reset the import statistics
d.importLock.Lock()
d.importStart = time.Now()
@@ -796,9 +1241,31 @@ func (d *Downloader) process() {
}
}
-// DeliverBlocks injects a new batch of blocks received from a remote node.
+// DeliverHashes61 injects a new batch of hashes received from a remote node into
+// the download schedule. This is usually invoked through the BlockHashesMsg by
+// the protocol handler.
+func (d *Downloader) DeliverHashes61(id string, hashes []common.Hash) error {
+ // Make sure the downloader is active
+ if atomic.LoadInt32(&d.synchronising) == 0 {
+ return errNoSyncActive
+ }
+ // Deliver or abort if the sync is canceled while queuing
+ d.cancelLock.RLock()
+ cancel := d.cancelCh
+ d.cancelLock.RUnlock()
+
+ select {
+ case d.hashCh <- hashPack{id, hashes}:
+ return nil
+
+ case <-cancel:
+ return errNoSyncActive
+ }
+}
+
+// DeliverBlocks61 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 {
+func (d *Downloader) DeliverBlocks61(id string, blocks []*types.Block) error {
// Make sure the downloader is active
if atomic.LoadInt32(&d.synchronising) == 0 {
return errNoSyncActive
@@ -817,10 +1284,9 @@ func (d *Downloader) DeliverBlocks(id string, blocks []*types.Block) error {
}
}
-// DeliverHashes injects a new batch of hashes received from a remote node into
-// the download schedule. This is usually invoked through the BlockHashesMsg by
-// the protocol handler.
-func (d *Downloader) DeliverHashes(id string, hashes []common.Hash) error {
+// DeliverHeaders injects a new batch of blck headers received from a remote
+// node into the download schedule.
+func (d *Downloader) DeliverHeaders(id string, headers []*types.Header) error {
// Make sure the downloader is active
if atomic.LoadInt32(&d.synchronising) == 0 {
return errNoSyncActive
@@ -831,7 +1297,27 @@ func (d *Downloader) DeliverHashes(id string, hashes []common.Hash) error {
d.cancelLock.RUnlock()
select {
- case d.hashCh <- hashPack{id, hashes}:
+ case d.headerCh <- headerPack{id, headers}:
+ return nil
+
+ case <-cancel:
+ return errNoSyncActive
+ }
+}
+
+// DeliverBodies injects a new batch of block bodies received from a remote node.
+func (d *Downloader) DeliverBodies(id string, transactions [][]*types.Transaction, uncles [][]*types.Header) error {
+ // Make sure the downloader is active
+ if atomic.LoadInt32(&d.synchronising) == 0 {
+ return errNoSyncActive
+ }
+ // Deliver or abort if the sync is canceled while queuing
+ d.cancelLock.RLock()
+ cancel := d.cancelCh
+ d.cancelLock.RUnlock()
+
+ select {
+ case d.bodyCh <- bodyPack{id, transactions, uncles}:
return nil
case <-cancel:
diff --git a/eth/downloader/downloader_test.go b/eth/downloader/downloader_test.go
index 7e3456433..8d009b671 100644
--- a/eth/downloader/downloader_test.go
+++ b/eth/downloader/downloader_test.go
@@ -27,20 +27,39 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
+ "github.com/ethereum/go-ethereum/params"
)
var (
- testdb, _ = ethdb.NewMemDatabase()
- genesis = core.GenesisBlockForTesting(testdb, common.Address{}, big.NewInt(0))
+ testdb, _ = ethdb.NewMemDatabase()
+ testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+ testAddress = crypto.PubkeyToAddress(testKey.PublicKey)
+ genesis = core.GenesisBlockForTesting(testdb, testAddress, big.NewInt(1000000000))
)
-// makeChain creates a chain of n blocks starting at but not including
-// parent. the returned hash chain is ordered head->parent.
+// makeChain creates a chain of n blocks starting at and including parent.
+// the returned hash chain is ordered head->parent. In addition, every 3rd block
+// contains a transaction and every 5th an uncle to allow testing correct block
+// reassembly.
func makeChain(n int, seed byte, parent *types.Block) ([]common.Hash, map[common.Hash]*types.Block) {
- blocks := core.GenerateChain(parent, testdb, n, func(i int, gen *core.BlockGen) {
- gen.SetCoinbase(common.Address{seed})
+ blocks := core.GenerateChain(parent, testdb, n, func(i int, block *core.BlockGen) {
+ block.SetCoinbase(common.Address{seed})
+
+ // If the block number is multiple of 3, send a bonus transaction to the miner
+ if parent == genesis && i%3 == 0 {
+ tx, err := types.NewTransaction(block.TxNonce(testAddress), common.Address{seed}, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(testKey)
+ if err != nil {
+ panic(err)
+ }
+ block.AddTx(tx)
+ }
+ // If the block number is a multiple of 5, add a bonus uncle to the block
+ if i%5 == 0 {
+ block.AddUncle(&types.Header{ParentHash: block.PrevBlock(i - 1).Hash(), Number: big.NewInt(int64(i - 1))})
+ }
})
hashes := make([]common.Hash, n+1)
hashes[len(hashes)-1] = parent.Hash()
@@ -78,8 +97,6 @@ type downloadTester struct {
ownBlocks map[common.Hash]*types.Block // Blocks belonging to the tester
peerHashes map[string][]common.Hash // Hash chain belonging to different test peers
peerBlocks map[string]map[common.Hash]*types.Block // Blocks belonging to different test peers
-
- maxHashFetch int // Overrides the maximum number of retrieved hashes
}
// newTester creates a new downloader test mocker.
@@ -156,7 +173,9 @@ func (dl *downloadTester) newPeer(id string, version int, hashes []common.Hash,
// specific delay time on processing the network packets sent to it, simulating
// potentially slow network IO.
func (dl *downloadTester) newSlowPeer(id string, version int, hashes []common.Hash, blocks map[common.Hash]*types.Block, delay time.Duration) error {
- err := dl.downloader.RegisterPeer(id, version, hashes[0], dl.peerGetRelHashesFn(id, delay), dl.peerGetAbsHashesFn(id, version, delay), dl.peerGetBlocksFn(id, delay))
+ err := dl.downloader.RegisterPeer(id, version, hashes[0],
+ dl.peerGetRelHashesFn(id, delay), dl.peerGetAbsHashesFn(id, delay), dl.peerGetBlocksFn(id, delay),
+ nil, dl.peerGetAbsHeadersFn(id, delay), dl.peerGetBodiesFn(id, delay))
if err == nil {
// Assign the owned hashes and blocks to the peer (deep copy)
dl.peerHashes[id] = make([]common.Hash, len(hashes))
@@ -184,13 +203,9 @@ func (dl *downloadTester) peerGetRelHashesFn(id string, delay time.Duration) fun
return func(head common.Hash) error {
time.Sleep(delay)
- limit := MaxHashFetch
- if dl.maxHashFetch > 0 {
- limit = dl.maxHashFetch
- }
// Gather the next batch of hashes
hashes := dl.peerHashes[id]
- result := make([]common.Hash, 0, limit)
+ result := make([]common.Hash, 0, MaxHashFetch)
for i, hash := range hashes {
if hash == head {
i++
@@ -204,7 +219,7 @@ func (dl *downloadTester) peerGetRelHashesFn(id string, delay time.Duration) fun
// Delay delivery a bit to allow attacks to unfold
go func() {
time.Sleep(time.Millisecond)
- dl.downloader.DeliverHashes(id, result)
+ dl.downloader.DeliverHashes61(id, result)
}()
return nil
}
@@ -213,24 +228,20 @@ func (dl *downloadTester) peerGetRelHashesFn(id string, delay time.Duration) fun
// peerGetAbsHashesFn constructs a GetHashesFromNumber function associated with
// a particular peer in the download tester. The returned function can be used to
// retrieve batches of hashes from the particularly requested peer.
-func (dl *downloadTester) peerGetAbsHashesFn(id string, version int, delay time.Duration) func(uint64, int) error {
+func (dl *downloadTester) peerGetAbsHashesFn(id string, delay time.Duration) func(uint64, int) error {
return func(head uint64, count int) error {
time.Sleep(delay)
- limit := count
- if dl.maxHashFetch > 0 {
- limit = dl.maxHashFetch
- }
// Gather the next batch of hashes
hashes := dl.peerHashes[id]
- result := make([]common.Hash, 0, limit)
- for i := 0; i < limit && len(hashes)-int(head)-1-i >= 0; i++ {
+ result := make([]common.Hash, 0, count)
+ for i := 0; i < count && len(hashes)-int(head)-1-i >= 0; i++ {
result = append(result, hashes[len(hashes)-int(head)-1-i])
}
// Delay delivery a bit to allow attacks to unfold
go func() {
time.Sleep(time.Millisecond)
- dl.downloader.DeliverHashes(id, result)
+ dl.downloader.DeliverHashes61(id, result)
}()
return nil
}
@@ -249,7 +260,55 @@ func (dl *downloadTester) peerGetBlocksFn(id string, delay time.Duration) func([
result = append(result, block)
}
}
- go dl.downloader.DeliverBlocks(id, result)
+ go dl.downloader.DeliverBlocks61(id, result)
+
+ return nil
+ }
+}
+
+// peerGetAbsHeadersFn constructs a GetBlockHeaders function based on a numbered
+// origin; associated with a particular peer in the download tester. The returned
+// function can be used to retrieve batches of headers from the particular peer.
+func (dl *downloadTester) peerGetAbsHeadersFn(id string, delay time.Duration) func(uint64, int, int, bool) error {
+ return func(origin uint64, amount int, skip int, reverse bool) error {
+ time.Sleep(delay)
+
+ // Gather the next batch of hashes
+ hashes := dl.peerHashes[id]
+ blocks := dl.peerBlocks[id]
+ result := make([]*types.Header, 0, amount)
+ for i := 0; i < amount && len(hashes)-int(origin)-1-i >= 0; i++ {
+ if block, ok := blocks[hashes[len(hashes)-int(origin)-1-i]]; ok {
+ result = append(result, block.Header())
+ }
+ }
+ // Delay delivery a bit to allow attacks to unfold
+ go func() {
+ time.Sleep(time.Millisecond)
+ dl.downloader.DeliverHeaders(id, result)
+ }()
+ return nil
+ }
+}
+
+// peerGetBodiesFn constructs a getBlockBodies method associated with a particular
+// peer in the download tester. The returned function can be used to retrieve
+// batches of block bodies from the particularly requested peer.
+func (dl *downloadTester) peerGetBodiesFn(id string, delay time.Duration) func([]common.Hash) error {
+ return func(hashes []common.Hash) error {
+ time.Sleep(delay)
+ blocks := dl.peerBlocks[id]
+
+ transactions := make([][]*types.Transaction, 0, len(hashes))
+ uncles := make([][]*types.Header, 0, len(hashes))
+
+ for _, hash := range hashes {
+ if block, ok := blocks[hash]; ok {
+ transactions = append(transactions, block.Transactions())
+ uncles = append(uncles, block.Uncles())
+ }
+ }
+ go dl.downloader.DeliverBodies(id, transactions, uncles)
return nil
}
@@ -258,13 +317,18 @@ func (dl *downloadTester) peerGetBlocksFn(id string, delay time.Duration) func([
// Tests that simple synchronization against a canonical chain works correctly.
// In this test common ancestor lookup should be short circuited and not require
// binary searching.
-func TestCanonicalSynchronisation61(t *testing.T) {
+func TestCanonicalSynchronisation61(t *testing.T) { testCanonicalSynchronisation(t, 61) }
+func TestCanonicalSynchronisation62(t *testing.T) { testCanonicalSynchronisation(t, 62) }
+func TestCanonicalSynchronisation63(t *testing.T) { testCanonicalSynchronisation(t, 63) }
+func TestCanonicalSynchronisation64(t *testing.T) { testCanonicalSynchronisation(t, 64) }
+
+func testCanonicalSynchronisation(t *testing.T, protocol int) {
// Create a small enough block chain to download
targetBlocks := blockCacheLimit - 15
hashes, blocks := makeChain(targetBlocks, 0, genesis)
tester := newTester()
- tester.newPeer("peer", eth61, hashes, blocks)
+ tester.newPeer("peer", protocol, hashes, blocks)
// Synchronise with the peer and make sure all blocks were retrieved
if err := tester.sync("peer", nil); err != nil {
@@ -277,7 +341,10 @@ func TestCanonicalSynchronisation61(t *testing.T) {
// Tests that if a large batch of blocks are being downloaded, it is throttled
// until the cached blocks are retrieved.
-func TestThrottling61(t *testing.T) { testThrottling(t, eth61) }
+func TestThrottling61(t *testing.T) { testThrottling(t, 61) }
+func TestThrottling62(t *testing.T) { testThrottling(t, 62) }
+func TestThrottling63(t *testing.T) { testThrottling(t, 63) }
+func TestThrottling64(t *testing.T) { testThrottling(t, 64) }
func testThrottling(t *testing.T, protocol int) {
// Create a long block chain to download and the tester
@@ -288,11 +355,10 @@ func testThrottling(t *testing.T, protocol int) {
tester.newPeer("peer", protocol, hashes, blocks)
// Wrap the importer to allow stepping
- done := make(chan int)
- tester.downloader.insertChain = func(blocks types.Blocks) (int, error) {
- n, err := tester.insertChain(blocks)
- done <- n
- return n, err
+ blocked, proceed := uint32(0), make(chan struct{})
+ tester.downloader.chainInsertHook = func(blocks []*Block) {
+ atomic.StoreUint32(&blocked, uint32(len(blocks)))
+ <-proceed
}
// Start a synchronisation concurrently
errc := make(chan error)
@@ -303,27 +369,25 @@ func testThrottling(t *testing.T, protocol int) {
for len(tester.ownBlocks) < targetBlocks+1 {
// Wait a bit for sync to throttle itself
var cached int
- for start := time.Now(); time.Since(start) < 3*time.Second; {
+ for start := time.Now(); time.Since(start) < time.Second; {
time.Sleep(25 * time.Millisecond)
cached = len(tester.downloader.queue.blockPool)
- if cached == blockCacheLimit || len(tester.ownBlocks)+cached == targetBlocks+1 {
+ if cached == blockCacheLimit || len(tester.ownBlocks)+cached+int(atomic.LoadUint32(&blocked)) == targetBlocks+1 {
break
}
}
// Make sure we filled up the cache, then exhaust it
time.Sleep(25 * time.Millisecond) // give it a chance to screw up
- if cached != blockCacheLimit && len(tester.ownBlocks)+cached < targetBlocks+1 {
- t.Fatalf("block count mismatch: have %v, want %v", cached, blockCacheLimit)
+ if cached != blockCacheLimit && len(tester.ownBlocks)+cached+int(atomic.LoadUint32(&blocked)) != targetBlocks+1 {
+ t.Fatalf("block count mismatch: have %v, want %v (owned %v, target %v)", cached, blockCacheLimit, len(tester.ownBlocks), targetBlocks+1)
}
- <-done // finish previous blocking import
- for cached > maxBlockProcess {
- cached -= <-done
+ // Permit the blocked blocks to import
+ if atomic.LoadUint32(&blocked) > 0 {
+ atomic.StoreUint32(&blocked, uint32(0))
+ proceed <- struct{}{}
}
- time.Sleep(25 * time.Millisecond) // yield to the insertion
}
- <-done // finish the last blocking import
-
// Check that we haven't pulled more blocks than available
if len(tester.ownBlocks) > targetBlocks+1 {
t.Fatalf("target block count mismatch: have %v, want %v", len(tester.ownBlocks), targetBlocks+1)
@@ -336,14 +400,19 @@ func testThrottling(t *testing.T, protocol int) {
// Tests that simple synchronization against a forked chain works correctly. In
// this test common ancestor lookup should *not* be short circuited, and a full
// binary search should be executed.
-func TestForkedSynchronisation61(t *testing.T) {
+func TestForkedSynchronisation61(t *testing.T) { testForkedSynchronisation(t, 61) }
+func TestForkedSynchronisation62(t *testing.T) { testForkedSynchronisation(t, 62) }
+func TestForkedSynchronisation63(t *testing.T) { testForkedSynchronisation(t, 63) }
+func TestForkedSynchronisation64(t *testing.T) { testForkedSynchronisation(t, 64) }
+
+func testForkedSynchronisation(t *testing.T, protocol int) {
// Create a long enough forked chain
common, fork := MaxHashFetch, 2*MaxHashFetch
hashesA, hashesB, blocksA, blocksB := makeChainFork(common+fork, fork, genesis)
tester := newTester()
- tester.newPeer("fork A", eth61, hashesA, blocksA)
- tester.newPeer("fork B", eth61, hashesB, blocksB)
+ tester.newPeer("fork A", protocol, hashesA, blocksA)
+ tester.newPeer("fork B", protocol, hashesB, blocksB)
// Synchronise with the peer and make sure all blocks were retrieved
if err := tester.sync("fork A", nil); err != nil {
@@ -362,20 +431,36 @@ func TestForkedSynchronisation61(t *testing.T) {
}
// Tests that an inactive downloader will not accept incoming hashes and blocks.
-func TestInactiveDownloader(t *testing.T) {
+func TestInactiveDownloader61(t *testing.T) {
tester := newTester()
// Check that neither hashes nor blocks are accepted
- if err := tester.downloader.DeliverHashes("bad peer", []common.Hash{}); err != errNoSyncActive {
+ if err := tester.downloader.DeliverHashes61("bad peer", []common.Hash{}); err != errNoSyncActive {
+ t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
+ }
+ if err := tester.downloader.DeliverBlocks61("bad peer", []*types.Block{}); err != errNoSyncActive {
+ t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
+ }
+}
+
+// Tests that an inactive downloader will not accept incoming block headers and bodies.
+func TestInactiveDownloader62(t *testing.T) {
+ tester := newTester()
+
+ // Check that neither block headers nor bodies are accepted
+ if err := tester.downloader.DeliverHeaders("bad peer", []*types.Header{}); err != errNoSyncActive {
t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
}
- if err := tester.downloader.DeliverBlocks("bad peer", []*types.Block{}); err != errNoSyncActive {
+ if err := tester.downloader.DeliverBodies("bad peer", [][]*types.Transaction{}, [][]*types.Header{}); err != errNoSyncActive {
t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
}
}
// Tests that a canceled download wipes all previously accumulated state.
-func TestCancel61(t *testing.T) { testCancel(t, eth61) }
+func TestCancel61(t *testing.T) { testCancel(t, 61) }
+func TestCancel62(t *testing.T) { testCancel(t, 62) }
+func TestCancel63(t *testing.T) { testCancel(t, 63) }
+func TestCancel64(t *testing.T) { testCancel(t, 64) }
func testCancel(t *testing.T, protocol int) {
// Create a small enough block chain to download and the tester
@@ -383,6 +468,9 @@ func testCancel(t *testing.T, protocol int) {
if targetBlocks >= MaxHashFetch {
targetBlocks = MaxHashFetch - 15
}
+ if targetBlocks >= MaxHeaderFetch {
+ targetBlocks = MaxHeaderFetch - 15
+ }
hashes, blocks := makeChain(targetBlocks, 0, genesis)
tester := newTester()
@@ -390,27 +478,30 @@ func testCancel(t *testing.T, protocol int) {
// Make sure canceling works with a pristine downloader
tester.downloader.cancel()
- 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)
+ downloading, importing := tester.downloader.queue.Size()
+ if downloading > 0 || importing > 0 {
+ t.Errorf("download or import count mismatch: %d downloading, %d importing, want 0", downloading, importing)
}
// Synchronise with the peer, but cancel afterwards
if err := tester.sync("peer", nil); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
tester.downloader.cancel()
- 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)
+ downloading, importing = tester.downloader.queue.Size()
+ if downloading > 0 || importing > 0 {
+ t.Errorf("download or import count mismatch: %d downloading, %d importing, want 0", downloading, importing)
}
}
// Tests that synchronisation from multiple peers works as intended (multi thread sanity test).
-func TestMultiSynchronisation61(t *testing.T) { testMultiSynchronisation(t, eth61) }
+func TestMultiSynchronisation61(t *testing.T) { testMultiSynchronisation(t, 61) }
+func TestMultiSynchronisation62(t *testing.T) { testMultiSynchronisation(t, 62) }
+func TestMultiSynchronisation63(t *testing.T) { testMultiSynchronisation(t, 63) }
+func TestMultiSynchronisation64(t *testing.T) { testMultiSynchronisation(t, 64) }
func testMultiSynchronisation(t *testing.T, protocol int) {
// Create various peers with various parts of the chain
- targetPeers := 16
+ targetPeers := 8
targetBlocks := targetPeers*blockCacheLimit - 15
hashes, blocks := makeChain(targetBlocks, 0, genesis)
@@ -436,45 +527,130 @@ func testMultiSynchronisation(t *testing.T, protocol int) {
}
}
+// Tests that if a block is empty (i.e. header only), no body request should be
+// made, and instead the header should be assembled into a whole block in itself.
+func TestEmptyBlockShortCircuit62(t *testing.T) { testEmptyBlockShortCircuit(t, 62) }
+func TestEmptyBlockShortCircuit63(t *testing.T) { testEmptyBlockShortCircuit(t, 63) }
+func TestEmptyBlockShortCircuit64(t *testing.T) { testEmptyBlockShortCircuit(t, 64) }
+
+func testEmptyBlockShortCircuit(t *testing.T, protocol int) {
+ // Create a small enough block chain to download
+ targetBlocks := blockCacheLimit - 15
+ hashes, blocks := makeChain(targetBlocks, 0, genesis)
+
+ tester := newTester()
+ tester.newPeer("peer", protocol, hashes, blocks)
+
+ // Instrument the downloader to signal body requests
+ requested := int32(0)
+ tester.downloader.bodyFetchHook = func(headers []*types.Header) {
+ atomic.AddInt32(&requested, int32(len(headers)))
+ }
+ // Synchronise with the peer and make sure all blocks were retrieved
+ if err := tester.sync("peer", nil); err != nil {
+ t.Fatalf("failed to synchronise blocks: %v", err)
+ }
+ if imported := len(tester.ownBlocks); imported != targetBlocks+1 {
+ t.Fatalf("synchronised block mismatch: have %v, want %v", imported, targetBlocks+1)
+ }
+ // Validate the number of block bodies that should have been requested
+ needed := 0
+ for _, block := range blocks {
+ if block != genesis && (len(block.Transactions()) > 0 || len(block.Uncles()) > 0) {
+ needed++
+ }
+ }
+ if int(requested) != needed {
+ t.Fatalf("block body retrieval count mismatch: have %v, want %v", requested, needed)
+ }
+}
+
+// Tests that if a peer sends an invalid body for a requested block, it gets
+// dropped immediately by the downloader.
+func TestInvalidBlockBodyAttack62(t *testing.T) { testInvalidBlockBodyAttack(t, 62) }
+func TestInvalidBlockBodyAttack63(t *testing.T) { testInvalidBlockBodyAttack(t, 63) }
+func TestInvalidBlockBodyAttack64(t *testing.T) { testInvalidBlockBodyAttack(t, 64) }
+
+func testInvalidBlockBodyAttack(t *testing.T, protocol int) {
+ // Create two peers, one feeding invalid block bodies
+ targetBlocks := 4*blockCacheLimit - 15
+ hashes, validBlocks := makeChain(targetBlocks, 0, genesis)
+
+ invalidBlocks := make(map[common.Hash]*types.Block)
+ for hash, block := range validBlocks {
+ invalidBlocks[hash] = types.NewBlockWithHeader(block.Header())
+ }
+
+ tester := newTester()
+ tester.newPeer("valid", protocol, hashes, validBlocks)
+ tester.newPeer("attack", protocol, hashes, invalidBlocks)
+
+ // Synchronise with the valid peer (will pull contents from the attacker too)
+ if err := tester.sync("valid", nil); err != nil {
+ t.Fatalf("failed to synchronise blocks: %v", err)
+ }
+ if imported := len(tester.ownBlocks); imported != len(hashes) {
+ t.Fatalf("synchronised block mismatch: have %v, want %v", imported, len(hashes))
+ }
+ // Make sure the attacker was detected and dropped in the mean time
+ if _, ok := tester.peerHashes["attack"]; ok {
+ t.Fatalf("block body attacker not detected/dropped")
+ }
+}
+
// Tests that a peer advertising an high TD doesn't get to stall the downloader
// afterwards by not sending any useful hashes.
-func TestHighTDStarvationAttack61(t *testing.T) {
+func TestHighTDStarvationAttack61(t *testing.T) { testHighTDStarvationAttack(t, 61) }
+func TestHighTDStarvationAttack62(t *testing.T) { testHighTDStarvationAttack(t, 62) }
+func TestHighTDStarvationAttack63(t *testing.T) { testHighTDStarvationAttack(t, 63) }
+func TestHighTDStarvationAttack64(t *testing.T) { testHighTDStarvationAttack(t, 64) }
+
+func testHighTDStarvationAttack(t *testing.T, protocol int) {
tester := newTester()
- tester.newPeer("attack", eth61, []common.Hash{genesis.Hash()}, nil)
+ hashes, blocks := makeChain(0, 0, genesis)
+
+ tester.newPeer("attack", protocol, []common.Hash{hashes[0]}, blocks)
if err := tester.sync("attack", big.NewInt(1000000)); err != errStallingPeer {
t.Fatalf("synchronisation error mismatch: have %v, want %v", err, errStallingPeer)
}
}
// Tests that misbehaving peers are disconnected, whilst behaving ones are not.
-func TestHashAttackerDropping(t *testing.T) {
+func TestBlockHeaderAttackerDropping61(t *testing.T) { testBlockHeaderAttackerDropping(t, 61) }
+func TestBlockHeaderAttackerDropping62(t *testing.T) { testBlockHeaderAttackerDropping(t, 62) }
+func TestBlockHeaderAttackerDropping63(t *testing.T) { testBlockHeaderAttackerDropping(t, 63) }
+func TestBlockHeaderAttackerDropping64(t *testing.T) { testBlockHeaderAttackerDropping(t, 64) }
+
+func testBlockHeaderAttackerDropping(t *testing.T, protocol int) {
// Define the disconnection requirement for individual hash fetch errors
tests := []struct {
result error
drop bool
}{
- {nil, false}, // Sync succeeded, all is well
- {errBusy, false}, // Sync is already in progress, no problem
- {errUnknownPeer, false}, // Peer is unknown, was already dropped, don't double drop
- {errBadPeer, true}, // Peer was deemed bad for some reason, drop it
- {errStallingPeer, true}, // Peer was detected to be stalling, drop it
- {errBannedHead, true}, // Peer's head hash is a known bad hash, drop it
- {errNoPeers, false}, // No peers to download from, soft race, no issue
- {errPendingQueue, false}, // There are blocks still cached, wait to exhaust, no issue
- {errTimeout, true}, // No hashes received in due time, drop the peer
- {errEmptyHashSet, true}, // No hashes were returned as a response, drop as it's a dead end
- {errPeersUnavailable, true}, // Nobody had the advertised blocks, drop the advertiser
- {errInvalidChain, true}, // Hash chain was detected as invalid, definitely drop
- {errCrossCheckFailed, true}, // Hash-origin failed to pass a block cross check, drop
- {errCancelHashFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
- {errCancelBlockFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
+ {nil, false}, // Sync succeeded, all is well
+ {errBusy, false}, // Sync is already in progress, no problem
+ {errUnknownPeer, false}, // Peer is unknown, was already dropped, don't double drop
+ {errBadPeer, true}, // Peer was deemed bad for some reason, drop it
+ {errStallingPeer, true}, // Peer was detected to be stalling, drop it
+ {errNoPeers, false}, // No peers to download from, soft race, no issue
+ {errPendingQueue, false}, // There are blocks still cached, wait to exhaust, no issue
+ {errTimeout, true}, // No hashes received in due time, drop the peer
+ {errEmptyHashSet, true}, // No hashes were returned as a response, drop as it's a dead end
+ {errEmptyHeaderSet, true}, // No headers were returned as a response, drop as it's a dead end
+ {errPeersUnavailable, true}, // Nobody had the advertised blocks, drop the advertiser
+ {errInvalidChain, true}, // Hash chain was detected as invalid, definitely drop
+ {errInvalidBody, false}, // A bad peer was detected, but not the sync origin
+ {errCancelHashFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
+ {errCancelBlockFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
+ {errCancelHeaderFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
+ {errCancelBodyFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
}
// Run the tests and check disconnection status
tester := newTester()
for i, tt := range tests {
// Register a new peer and ensure it's presence
id := fmt.Sprintf("test %d", i)
- if err := tester.newPeer(id, eth61, []common.Hash{genesis.Hash()}, nil); err != nil {
+ if err := tester.newPeer(id, protocol, []common.Hash{genesis.Hash()}, nil); err != nil {
t.Fatalf("test %d: failed to register new peer: %v", i, err)
}
if _, ok := tester.peerHashes[id]; !ok {
@@ -491,7 +667,12 @@ func TestHashAttackerDropping(t *testing.T) {
}
// Tests that feeding bad blocks will result in a peer drop.
-func TestBlockAttackerDropping(t *testing.T) {
+func TestBlockBodyAttackerDropping61(t *testing.T) { testBlockBodyAttackerDropping(t, 61) }
+func TestBlockBodyAttackerDropping62(t *testing.T) { testBlockBodyAttackerDropping(t, 62) }
+func TestBlockBodyAttackerDropping63(t *testing.T) { testBlockBodyAttackerDropping(t, 63) }
+func TestBlockBodyAttackerDropping64(t *testing.T) { testBlockBodyAttackerDropping(t, 64) }
+
+func testBlockBodyAttackerDropping(t *testing.T, protocol int) {
// Define the disconnection requirement for individual block import errors
tests := []struct {
failure bool
@@ -506,7 +687,7 @@ func TestBlockAttackerDropping(t *testing.T) {
for i, tt := range tests {
// Register a new peer and ensure it's presence
id := fmt.Sprintf("test %d", i)
- if err := tester.newPeer(id, eth61, []common.Hash{common.Hash{}}, nil); err != nil {
+ if err := tester.newPeer(id, protocol, []common.Hash{common.Hash{}}, nil); err != nil {
t.Fatalf("test %d: failed to register new peer: %v", i, err)
}
if _, ok := tester.peerHashes[id]; !ok {
diff --git a/eth/downloader/peer.go b/eth/downloader/peer.go
index 4273b9168..8fd1f9a99 100644
--- a/eth/downloader/peer.go
+++ b/eth/downloader/peer.go
@@ -31,10 +31,16 @@ import (
"gopkg.in/fatih/set.v0"
)
+// Hash and block fetchers belonging to eth/61 and below
type relativeHashFetcherFn func(common.Hash) error
type absoluteHashFetcherFn func(uint64, int) error
type blockFetcherFn func([]common.Hash) error
+// Block header and body fethers belonging to eth/62 and above
+type relativeHeaderFetcherFn func(common.Hash, int, int, bool) error
+type absoluteHeaderFetcherFn func(uint64, int, int, bool) error
+type blockBodyFetcherFn func([]common.Hash) error
+
var (
errAlreadyFetching = errors.New("already fetching blocks from peer")
errAlreadyRegistered = errors.New("peer is already registered")
@@ -54,25 +60,37 @@ type peer struct {
ignored *set.Set // Set of hashes not to request (didn't have previously)
- getRelHashes relativeHashFetcherFn // Method to retrieve a batch of hashes from an origin hash
- getAbsHashes absoluteHashFetcherFn // Method to retrieve a batch of hashes from an absolute position
- getBlocks blockFetcherFn // Method to retrieve a batch of blocks
+ getRelHashes relativeHashFetcherFn // [eth/61] Method to retrieve a batch of hashes from an origin hash
+ getAbsHashes absoluteHashFetcherFn // [eth/61] Method to retrieve a batch of hashes from an absolute position
+ getBlocks blockFetcherFn // [eth/61] Method to retrieve a batch of blocks
+
+ getRelHeaders relativeHeaderFetcherFn // [eth/62] Method to retrieve a batch of headers from an origin hash
+ getAbsHeaders absoluteHeaderFetcherFn // [eth/62] Method to retrieve a batch of headers from an absolute position
+ getBlockBodies blockBodyFetcherFn // [eth/62] Method to retrieve a batch of block bodies
version int // Eth protocol version number to switch strategies
}
// newPeer create a new downloader peer, with specific hash and block retrieval
// mechanisms.
-func newPeer(id string, version int, head common.Hash, getRelHashes relativeHashFetcherFn, getAbsHashes absoluteHashFetcherFn, getBlocks blockFetcherFn) *peer {
+func newPeer(id string, version int, head common.Hash,
+ getRelHashes relativeHashFetcherFn, getAbsHashes absoluteHashFetcherFn, getBlocks blockFetcherFn, // eth/61 callbacks, remove when upgrading
+ getRelHeaders relativeHeaderFetcherFn, getAbsHeaders absoluteHeaderFetcherFn, getBlockBodies blockBodyFetcherFn) *peer {
return &peer{
- id: id,
- head: head,
- capacity: 1,
+ id: id,
+ head: head,
+ capacity: 1,
+ ignored: set.New(),
+
getRelHashes: getRelHashes,
getAbsHashes: getAbsHashes,
getBlocks: getBlocks,
- ignored: set.New(),
- version: version,
+
+ getRelHeaders: getRelHeaders,
+ getAbsHeaders: getAbsHeaders,
+ getBlockBodies: getBlockBodies,
+
+ version: version,
}
}
@@ -83,8 +101,8 @@ func (p *peer) Reset() {
p.ignored.Clear()
}
-// Fetch sends a block retrieval request to the remote peer.
-func (p *peer) Fetch(request *fetchRequest) error {
+// Fetch61 sends a block retrieval request to the remote peer.
+func (p *peer) Fetch61(request *fetchRequest) error {
// Short circuit if the peer is already fetching
if !atomic.CompareAndSwapInt32(&p.idle, 0, 1) {
return errAlreadyFetching
@@ -101,10 +119,28 @@ func (p *peer) Fetch(request *fetchRequest) error {
return nil
}
-// SetIdle sets the peer to idle, allowing it to execute new retrieval requests.
+// Fetch sends a block body retrieval request to the remote peer.
+func (p *peer) Fetch(request *fetchRequest) error {
+ // Short circuit if the peer is already fetching
+ if !atomic.CompareAndSwapInt32(&p.idle, 0, 1) {
+ return errAlreadyFetching
+ }
+ p.started = time.Now()
+
+ // Convert the header set to a retrievable slice
+ hashes := make([]common.Hash, 0, len(request.Headers))
+ for _, header := range request.Headers {
+ hashes = append(hashes, header.Hash())
+ }
+ go p.getBlockBodies(hashes)
+
+ return nil
+}
+
+// SetIdle61 sets the peer to idle, allowing it to execute new retrieval requests.
// Its block retrieval allowance will also be updated either up- or downwards,
// depending on whether the previous fetch completed in time or not.
-func (p *peer) SetIdle() {
+func (p *peer) SetIdle61() {
// Update the peer's download allowance based on previous performance
scale := 2.0
if time.Since(p.started) > blockSoftTTL {
@@ -131,6 +167,36 @@ func (p *peer) SetIdle() {
atomic.StoreInt32(&p.idle, 0)
}
+// SetIdle sets the peer to idle, allowing it to execute new retrieval requests.
+// Its block body retrieval allowance will also be updated either up- or downwards,
+// depending on whether the previous fetch completed in time or not.
+func (p *peer) SetIdle() {
+ // Update the peer's download allowance based on previous performance
+ scale := 2.0
+ if time.Since(p.started) > bodySoftTTL {
+ scale = 0.5
+ if time.Since(p.started) > bodyHardTTL {
+ scale = 1 / float64(MaxBodyFetch) // reduces capacity to 1
+ }
+ }
+ for {
+ // Calculate the new download bandwidth allowance
+ prev := atomic.LoadInt32(&p.capacity)
+ next := int32(math.Max(1, math.Min(float64(MaxBodyFetch), float64(prev)*scale)))
+
+ // Try to update the old value
+ if atomic.CompareAndSwapInt32(&p.capacity, prev, next) {
+ // If we're having problems at 1 capacity, try to find better peers
+ if next == 1 {
+ p.Demote()
+ }
+ break
+ }
+ }
+ // Set the peer to idle to allow further block requests
+ atomic.StoreInt32(&p.idle, 0)
+}
+
// Capacity retrieves the peers block download allowance based on its previously
// discovered bandwidth capacity.
func (p *peer) Capacity() int {
diff --git a/eth/downloader/queue.go b/eth/downloader/queue.go
index 96e08e144..a527414ff 100644
--- a/eth/downloader/queue.go
+++ b/eth/downloader/queue.go
@@ -43,16 +43,20 @@ var (
// fetchRequest is a currently running block retrieval operation.
type fetchRequest struct {
- Peer *peer // Peer to which the request was sent
- Hashes map[common.Hash]int // Requested hashes with their insertion index (priority)
- Time time.Time // Time when the request was made
+ Peer *peer // Peer to which the request was sent
+ Hashes map[common.Hash]int // [eth/61] Requested hashes with their insertion index (priority)
+ Headers []*types.Header // [eth/62] Requested headers, sorted by request order
+ Time time.Time // Time when the request was made
}
// queue represents hashes that are either need fetching or are being fetched
type queue struct {
- hashPool map[common.Hash]int // Pending hashes, mapping to their insertion index (priority)
- hashQueue *prque.Prque // Priority queue of the block hashes to fetch
- hashCounter int // Counter indexing the added hashes to ensure retrieval order
+ hashPool map[common.Hash]int // [eth/61] Pending hashes, mapping to their insertion index (priority)
+ hashQueue *prque.Prque // [eth/61] Priority queue of the block hashes to fetch
+ hashCounter int // [eth/61] Counter indexing the added hashes to ensure retrieval order
+
+ headerPool map[common.Hash]*types.Header // [eth/62] Pending headers, mapping from their hashes
+ headerQueue *prque.Prque // [eth/62] Priority queue of the headers to fetch the bodies for
pendPool map[string]*fetchRequest // Currently pending block retrieval operations
@@ -66,11 +70,13 @@ 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]uint64),
- blockCache: make([]*Block, blockCacheLimit),
+ hashPool: make(map[common.Hash]int),
+ hashQueue: prque.New(),
+ headerPool: make(map[common.Hash]*types.Header),
+ headerQueue: prque.New(),
+ pendPool: make(map[string]*fetchRequest),
+ blockPool: make(map[common.Hash]uint64),
+ blockCache: make([]*Block, blockCacheLimit),
}
}
@@ -83,6 +89,9 @@ func (q *queue) Reset() {
q.hashQueue.Reset()
q.hashCounter = 0
+ q.headerPool = make(map[common.Hash]*types.Header)
+ q.headerQueue.Reset()
+
q.pendPool = make(map[string]*fetchRequest)
q.blockPool = make(map[common.Hash]uint64)
@@ -90,21 +99,21 @@ func (q *queue) Reset() {
q.blockCache = make([]*Block, blockCacheLimit)
}
-// Size retrieves the number of hashes in the queue, returning separately for
+// Size retrieves the number of blocks in the queue, returning separately for
// pending and already downloaded.
func (q *queue) Size() (int, int) {
q.lock.RLock()
defer q.lock.RUnlock()
- return len(q.hashPool), len(q.blockPool)
+ return len(q.hashPool) + len(q.headerPool), len(q.blockPool)
}
-// Pending retrieves the number of hashes pending for retrieval.
+// Pending retrieves the number of blocks pending for retrieval.
func (q *queue) Pending() int {
q.lock.RLock()
defer q.lock.RUnlock()
- return q.hashQueue.Size()
+ return q.hashQueue.Size() + q.headerQueue.Size()
}
// InFlight retrieves the number of fetch requests currently in flight.
@@ -124,7 +133,7 @@ func (q *queue) Throttle() bool {
// Calculate the currently in-flight block requests
pending := 0
for _, request := range q.pendPool {
- pending += len(request.Hashes)
+ pending += len(request.Hashes) + len(request.Headers)
}
// Throttle if more blocks are in-flight than free space in the cache
return pending >= len(q.blockCache)-len(q.blockPool)
@@ -138,15 +147,18 @@ func (q *queue) Has(hash common.Hash) bool {
if _, ok := q.hashPool[hash]; ok {
return true
}
+ if _, ok := q.headerPool[hash]; ok {
+ return true
+ }
if _, ok := q.blockPool[hash]; ok {
return true
}
return false
}
-// Insert adds a set of hashes for the download queue for scheduling, returning
+// Insert61 adds a set of hashes for the download queue for scheduling, returning
// the new hashes encountered.
-func (q *queue) Insert(hashes []common.Hash, fifo bool) []common.Hash {
+func (q *queue) Insert61(hashes []common.Hash, fifo bool) []common.Hash {
q.lock.Lock()
defer q.lock.Unlock()
@@ -172,6 +184,29 @@ func (q *queue) Insert(hashes []common.Hash, fifo bool) []common.Hash {
return inserts
}
+// Insert adds a set of headers for the download queue for scheduling, returning
+// the new headers encountered.
+func (q *queue) Insert(headers []*types.Header) []*types.Header {
+ q.lock.Lock()
+ defer q.lock.Unlock()
+
+ // Insert all the headers prioritized by the contained block number
+ inserts := make([]*types.Header, 0, len(headers))
+ for _, header := range headers {
+ // Make sure no duplicate requests are executed
+ hash := header.Hash()
+ if _, ok := q.headerPool[hash]; ok {
+ glog.V(logger.Warn).Infof("Header %x already scheduled", hash)
+ continue
+ }
+ // Queue the header for body retrieval
+ inserts = append(inserts, header)
+ q.headerPool[hash] = header
+ q.headerQueue.Push(header, -float32(header.Number.Uint64()))
+ }
+ return inserts
+}
+
// GetHeadBlock retrieves the first block from the cache, or nil if it hasn't
// been downloaded yet (or simply non existent).
func (q *queue) GetHeadBlock() *Block {
@@ -227,9 +262,9 @@ func (q *queue) TakeBlocks() []*Block {
return blocks
}
-// Reserve reserves a set of hashes for the given peer, skipping any previously
+// Reserve61 reserves a set of hashes for the given peer, skipping any previously
// failed download.
-func (q *queue) Reserve(p *peer, count int) *fetchRequest {
+func (q *queue) Reserve61(p *peer, count int) *fetchRequest {
q.lock.Lock()
defer q.lock.Unlock()
@@ -276,6 +311,68 @@ func (q *queue) Reserve(p *peer, count int) *fetchRequest {
return request
}
+// Reserve reserves a set of headers for the given peer, skipping any previously
+// failed download. Beside the next batch of needed fetches, it also returns a
+// flag whether empty blocks were queued requiring processing.
+func (q *queue) Reserve(p *peer, count int) (*fetchRequest, bool, error) {
+ q.lock.Lock()
+ defer q.lock.Unlock()
+
+ // Short circuit if the pool has been depleted, or if the peer's already
+ // downloading something (sanity check not to corrupt state)
+ if q.headerQueue.Empty() {
+ return nil, false, nil
+ }
+ if _, ok := q.pendPool[p.id]; ok {
+ return nil, false, nil
+ }
+ // Calculate an upper limit on the bodies we might fetch (i.e. throttling)
+ space := len(q.blockCache) - len(q.blockPool)
+ for _, request := range q.pendPool {
+ space -= len(request.Headers)
+ }
+ // Retrieve a batch of headers, skipping previously failed ones
+ send := make([]*types.Header, 0, count)
+ skip := make([]*types.Header, 0)
+
+ process := false
+ for proc := 0; proc < space && len(send) < count && !q.headerQueue.Empty(); proc++ {
+ header := q.headerQueue.PopItem().(*types.Header)
+
+ // If the header defines an empty block, deliver straight
+ if header.TxHash == types.DeriveSha(types.Transactions{}) && header.UncleHash == types.CalcUncleHash([]*types.Header{}) {
+ if err := q.enqueue("", types.NewBlockWithHeader(header)); err != nil {
+ return nil, false, errInvalidChain
+ }
+ delete(q.headerPool, header.Hash())
+ process, space, proc = true, space-1, proc-1
+ continue
+ }
+ // If it's a content block, add to the body fetch request
+ if p.ignored.Has(header.Hash()) {
+ skip = append(skip, header)
+ } else {
+ send = append(send, header)
+ }
+ }
+ // Merge all the skipped headers back
+ for _, header := range skip {
+ q.headerQueue.Push(header, -float32(header.Number.Uint64()))
+ }
+ // Assemble and return the block download request
+ if len(send) == 0 {
+ return nil, process, nil
+ }
+ request := &fetchRequest{
+ Peer: p,
+ Headers: send,
+ Time: time.Now(),
+ }
+ q.pendPool[p.id] = request
+
+ return request, process, nil
+}
+
// Cancel aborts a fetch request, returning all pending hashes to the queue.
func (q *queue) Cancel(request *fetchRequest) {
q.lock.Lock()
@@ -284,6 +381,9 @@ func (q *queue) Cancel(request *fetchRequest) {
for hash, index := range request.Hashes {
q.hashQueue.Push(hash, float32(index))
}
+ for _, header := range request.Headers {
+ q.headerQueue.Push(header, -float32(header.Number.Uint64()))
+ }
delete(q.pendPool, request.Peer.id)
}
@@ -310,8 +410,8 @@ func (q *queue) Expire(timeout time.Duration) []string {
return peers
}
-// Deliver injects a block retrieval response into the download queue.
-func (q *queue) Deliver(id string, blocks []*types.Block) (err error) {
+// Deliver61 injects a block retrieval response into the download queue.
+func (q *queue) Deliver61(id string, blocks []*types.Block) (err error) {
q.lock.Lock()
defer q.lock.Unlock()
@@ -337,19 +437,12 @@ func (q *queue) Deliver(id string, blocks []*types.Block) (err error) {
errs = append(errs, fmt.Errorf("non-requested block %x", hash))
continue
}
- // If a requested block falls out of the range, the hash chain is invalid
- index := int(int64(block.NumberU64()) - int64(q.blockOffset))
- if index >= len(q.blockCache) || index < 0 {
- return errInvalidChain
- }
- // Otherwise merge the block and mark the hash block
- q.blockCache[index] = &Block{
- RawBlock: block,
- OriginPeer: id,
+ // Queue the block up for processing
+ if err := q.enqueue(id, block); err != nil {
+ return err
}
delete(request.Hashes, hash)
delete(q.hashPool, hash)
- q.blockPool[hash] = block.NumberU64()
}
// Return all failed or missing fetches to the queue
for hash, index := range request.Hashes {
@@ -365,6 +458,88 @@ func (q *queue) Deliver(id string, blocks []*types.Block) (err error) {
return nil
}
+// Deliver injects a block body retrieval response into the download queue.
+func (q *queue) Deliver(id string, txLists [][]*types.Transaction, uncleLists [][]*types.Header) error {
+ q.lock.Lock()
+ defer q.lock.Unlock()
+
+ // Short circuit if the block bodies were never requested
+ request := q.pendPool[id]
+ if request == nil {
+ return errNoFetchesPending
+ }
+ delete(q.pendPool, id)
+
+ // If no block bodies were retrieved, mark them as unavailable for the origin peer
+ if len(txLists) == 0 || len(uncleLists) == 0 {
+ for hash, _ := range request.Headers {
+ request.Peer.ignored.Add(hash)
+ }
+ }
+ // Assemble each of the block bodies with their headers and queue for processing
+ errs := make([]error, 0)
+ for i, header := range request.Headers {
+ // Short circuit block assembly if no more bodies are found
+ if i >= len(txLists) || i >= len(uncleLists) {
+ break
+ }
+ // Reconstruct the next block if contents match up
+ if types.DeriveSha(types.Transactions(txLists[i])) != header.TxHash || types.CalcUncleHash(uncleLists[i]) != header.UncleHash {
+ errs = []error{errInvalidBody}
+ break
+ }
+ block := types.NewBlockWithHeader(header).WithBody(txLists[i], uncleLists[i])
+
+ // Queue the block up for processing
+ if err := q.enqueue(id, block); err != nil {
+ errs = []error{err}
+ break
+ }
+ request.Headers[i] = nil
+ delete(q.headerPool, header.Hash())
+ }
+ // Return all failed or missing fetches to the queue
+ for _, header := range request.Headers {
+ if header != nil {
+ q.headerQueue.Push(header, -float32(header.Number.Uint64()))
+ }
+ }
+ // If none of the blocks were good, it's a stale delivery
+ switch {
+ case len(errs) == 0:
+ return nil
+
+ case len(errs) == 1 && errs[0] == errInvalidBody:
+ return errInvalidBody
+
+ case len(errs) == 1 && errs[0] == errInvalidChain:
+ return errInvalidChain
+
+ case len(errs) == len(request.Headers):
+ return errStaleDelivery
+
+ default:
+ return fmt.Errorf("multiple failures: %v", errs)
+ }
+}
+
+// enqueue inserts a new block into the final delivery queue, waiting for pickup
+// by the processor.
+func (q *queue) enqueue(origin string, block *types.Block) error {
+ // If a requested block falls out of the range, the hash chain is invalid
+ index := int(int64(block.NumberU64()) - int64(q.blockOffset))
+ if index >= len(q.blockCache) || index < 0 {
+ return errInvalidChain
+ }
+ // Otherwise merge the block and mark the hash done
+ q.blockCache[index] = &Block{
+ RawBlock: block,
+ OriginPeer: origin,
+ }
+ q.blockPool[block.Header().Hash()] = block.NumberU64()
+ return nil
+}
+
// Prepare configures the block cache offset to allow accepting inbound blocks.
func (q *queue) Prepare(offset uint64) {
q.lock.Lock()
diff --git a/eth/fetcher/fetcher.go b/eth/fetcher/fetcher.go
index 07eb165dc..f54256788 100644
--- a/eth/fetcher/fetcher.go
+++ b/eth/fetcher/fetcher.go
@@ -51,6 +51,12 @@ type blockRetrievalFn func(common.Hash) *types.Block
// blockRequesterFn is a callback type for sending a block retrieval request.
type blockRequesterFn func([]common.Hash) error
+// headerRequesterFn is a callback type for sending a header retrieval request.
+type headerRequesterFn func(common.Hash) error
+
+// bodyRequesterFn is a callback type for sending a body retrieval request.
+type bodyRequesterFn func([]common.Hash) error
+
// blockValidatorFn is a callback type to verify a block's header for fast propagation.
type blockValidatorFn func(block *types.Block, parent *types.Block) error
@@ -69,12 +75,30 @@ type peerDropFn func(id string)
// announce is the hash notification of the availability of a new block in the
// network.
type announce struct {
- hash common.Hash // Hash of the block being announced
- number uint64 // Number of the block being announced (0 = unknown | old protocol)
- time time.Time // Timestamp of the announcement
+ hash common.Hash // Hash of the block being announced
+ number uint64 // Number of the block being announced (0 = unknown | old protocol)
+ header *types.Header // Header of the block partially reassembled (new protocol)
+ time time.Time // Timestamp of the announcement
+
+ origin string // Identifier of the peer originating the notification
+
+ fetch61 blockRequesterFn // [eth/61] Fetcher function to retrieve an announced block
+ fetchHeader headerRequesterFn // [eth/62] Fetcher function to retrieve the header of an announced block
+ fetchBodies bodyRequesterFn // [eth/62] Fetcher function to retrieve the body of an announced block
+}
- origin string // Identifier of the peer originating the notification
- fetch blockRequesterFn // Fetcher function to retrieve
+// headerFilterTask represents a batch of headers needing fetcher filtering.
+type headerFilterTask struct {
+ headers []*types.Header // Collection of headers to filter
+ time time.Time // Arrival time of the headers
+}
+
+// headerFilterTask represents a batch of block bodies (transactions and uncles)
+// needing fetcher filtering.
+type bodyFilterTask struct {
+ transactions [][]*types.Transaction // Collection of transactions per block bodies
+ uncles [][]*types.Header // Collection of uncles per block bodies
+ time time.Time // Arrival time of the blocks' contents
}
// inject represents a schedules import operation.
@@ -89,14 +113,20 @@ type Fetcher struct {
// Various event channels
notify chan *announce
inject chan *inject
- filter chan chan []*types.Block
- done chan common.Hash
- quit chan struct{}
+
+ blockFilter chan chan []*types.Block
+ headerFilter chan chan *headerFilterTask
+ bodyFilter chan chan *bodyFilterTask
+
+ done chan common.Hash
+ quit chan struct{}
// Announce states
- announces map[string]int // Per peer announce counts to prevent memory exhaustion
- announced map[common.Hash][]*announce // Announced blocks, scheduled for fetching
- fetching map[common.Hash]*announce // Announced blocks, currently fetching
+ announces map[string]int // Per peer announce counts to prevent memory exhaustion
+ announced map[common.Hash][]*announce // Announced blocks, scheduled for fetching
+ fetching map[common.Hash]*announce // Announced blocks, currently fetching
+ fetched map[common.Hash][]*announce // Blocks with headers fetched, scheduled for body retrieval
+ completing map[common.Hash]*announce // Blocks with headers, currently body-completing
// Block cache
queue *prque.Prque // Queue containing the import operations (block number sorted)
@@ -112,8 +142,9 @@ type Fetcher struct {
dropPeer peerDropFn // Drops a peer for misbehaving
// Testing hooks
- fetchingHook func([]common.Hash) // Method to call upon starting a block fetch
- importedHook func(*types.Block) // Method to call upon successful block import
+ fetchingHook func([]common.Hash) // Method to call upon starting a block (eth/61) or header (eth/62) fetch
+ completingHook func([]common.Hash) // Method to call upon starting a block body fetch (eth/62)
+ importedHook func(*types.Block) // Method to call upon successful block import (both eth/61 and eth/62)
}
// New creates a block fetcher to retrieve blocks based on hash announcements.
@@ -121,12 +152,16 @@ func New(getBlock blockRetrievalFn, validateBlock blockValidatorFn, broadcastBlo
return &Fetcher{
notify: make(chan *announce),
inject: make(chan *inject),
- filter: make(chan chan []*types.Block),
+ blockFilter: make(chan chan []*types.Block),
+ headerFilter: make(chan chan *headerFilterTask),
+ bodyFilter: make(chan chan *bodyFilterTask),
done: make(chan common.Hash),
quit: make(chan struct{}),
announces: make(map[string]int),
announced: make(map[common.Hash][]*announce),
fetching: make(map[common.Hash]*announce),
+ fetched: make(map[common.Hash][]*announce),
+ completing: make(map[common.Hash]*announce),
queue: prque.New(),
queues: make(map[string]int),
queued: make(map[common.Hash]*inject),
@@ -153,13 +188,17 @@ func (f *Fetcher) Stop() {
// Notify announces the fetcher of the potential availability of a new block in
// the network.
-func (f *Fetcher) Notify(peer string, hash common.Hash, number uint64, time time.Time, fetcher blockRequesterFn) error {
+func (f *Fetcher) Notify(peer string, hash common.Hash, number uint64, time time.Time,
+ blockFetcher blockRequesterFn, // eth/61 specific whole block fetcher
+ headerFetcher headerRequesterFn, bodyFetcher bodyRequesterFn) error {
block := &announce{
- hash: hash,
- number: number,
- time: time,
- origin: peer,
- fetch: fetcher,
+ hash: hash,
+ number: number,
+ time: time,
+ origin: peer,
+ fetch61: blockFetcher,
+ fetchHeader: headerFetcher,
+ fetchBodies: bodyFetcher,
}
select {
case f.notify <- block:
@@ -183,14 +222,16 @@ func (f *Fetcher) Enqueue(peer string, block *types.Block) error {
}
}
-// Filter extracts all the blocks that were explicitly requested by the fetcher,
+// FilterBlocks extracts all the blocks that were explicitly requested by the fetcher,
// returning those that should be handled differently.
-func (f *Fetcher) Filter(blocks types.Blocks) types.Blocks {
+func (f *Fetcher) FilterBlocks(blocks types.Blocks) types.Blocks {
+ glog.V(logger.Detail).Infof("[eth/61] filtering %d blocks", len(blocks))
+
// Send the filter channel to the fetcher
filter := make(chan []*types.Block)
select {
- case f.filter <- filter:
+ case f.blockFilter <- filter:
case <-f.quit:
return nil
}
@@ -209,11 +250,69 @@ func (f *Fetcher) Filter(blocks types.Blocks) types.Blocks {
}
}
+// FilterHeaders extracts all the headers that were explicitly requested by the fetcher,
+// returning those that should be handled differently.
+func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*types.Header {
+ glog.V(logger.Detail).Infof("[eth/62] filtering %d headers", len(headers))
+
+ // Send the filter channel to the fetcher
+ filter := make(chan *headerFilterTask)
+
+ select {
+ case f.headerFilter <- filter:
+ case <-f.quit:
+ return nil
+ }
+ // Request the filtering of the header list
+ select {
+ case filter <- &headerFilterTask{headers: headers, time: time}:
+ case <-f.quit:
+ return nil
+ }
+ // Retrieve the headers remaining after filtering
+ select {
+ case task := <-filter:
+ return task.headers
+ case <-f.quit:
+ return nil
+ }
+}
+
+// FilterBodies extracts all the block bodies that were explicitly requested by
+// the fetcher, returning those that should be handled differently.
+func (f *Fetcher) FilterBodies(transactions [][]*types.Transaction, uncles [][]*types.Header, time time.Time) ([][]*types.Transaction, [][]*types.Header) {
+ glog.V(logger.Detail).Infof("[eth/62] filtering %d:%d bodies", len(transactions), len(uncles))
+
+ // Send the filter channel to the fetcher
+ filter := make(chan *bodyFilterTask)
+
+ select {
+ case f.bodyFilter <- filter:
+ case <-f.quit:
+ return nil, nil
+ }
+ // Request the filtering of the body list
+ select {
+ case filter <- &bodyFilterTask{transactions: transactions, uncles: uncles, time: time}:
+ case <-f.quit:
+ return nil, nil
+ }
+ // Retrieve the bodies remaining after filtering
+ select {
+ case task := <-filter:
+ return task.transactions, task.uncles
+ case <-f.quit:
+ return nil, nil
+ }
+}
+
// Loop is the main fetcher loop, checking and processing various notification
// events.
func (f *Fetcher) loop() {
// Iterate the block fetching until a quit is requested
- fetch := time.NewTimer(0)
+ fetchTimer := time.NewTimer(0)
+ completeTimer := time.NewTimer(0)
+
for {
// Clean up any expired block fetches
for hash, announce := range f.fetching {
@@ -255,14 +354,25 @@ func (f *Fetcher) loop() {
glog.V(logger.Debug).Infof("Peer %s: exceeded outstanding announces (%d)", notification.origin, hashLimit)
break
}
+ // If we have a valid block number, check that it's potentially useful
+ if notification.number > 0 {
+ if dist := int64(notification.number) - int64(f.chainHeight()); dist < -maxUncleDist || dist > maxQueueDist {
+ glog.V(logger.Debug).Infof("[eth/62] Peer %s: discarded announcement #%d [%x…], distance %d", notification.origin, notification.number, notification.hash[:4], dist)
+ discardMeter.Mark(1)
+ break
+ }
+ }
// All is well, schedule the announce if block's not yet downloading
if _, ok := f.fetching[notification.hash]; ok {
break
}
+ if _, ok := f.completing[notification.hash]; ok {
+ break
+ }
f.announces[notification.origin] = count
f.announced[notification.hash] = append(f.announced[notification.hash], notification)
if len(f.announced) == 1 {
- f.reschedule(fetch)
+ f.rescheduleFetch(fetchTimer)
}
case op := <-f.inject:
@@ -275,7 +385,7 @@ func (f *Fetcher) loop() {
f.forgetHash(hash)
f.forgetBlock(hash)
- case <-fetch.C:
+ case <-fetchTimer.C:
// At least one block's timer ran out, check for needing retrieval
request := make(map[string][]common.Hash)
@@ -292,30 +402,77 @@ func (f *Fetcher) loop() {
}
}
}
- // Send out all block requests
+ // Send out all block (eth/61) or header (eth/62) requests
for peer, hashes := range request {
if glog.V(logger.Detail) && len(hashes) > 0 {
list := "["
for _, hash := range hashes {
- list += fmt.Sprintf("%x, ", hash[:4])
+ list += fmt.Sprintf("%x…, ", hash[:4])
}
list = list[:len(list)-2] + "]"
- glog.V(logger.Detail).Infof("Peer %s: fetching %s", peer, list)
+ if f.fetching[hashes[0]].fetch61 != nil {
+ glog.V(logger.Detail).Infof("[eth/61] Peer %s: fetching blocks %s", peer, list)
+ } else {
+ glog.V(logger.Detail).Infof("[eth/62] Peer %s: fetching headers %s", peer, list)
+ }
}
// Create a closure of the fetch and schedule in on a new thread
- fetcher, hashes := f.fetching[hashes[0]].fetch, hashes
+ fetchBlocks, fetchHeader, hashes := f.fetching[hashes[0]].fetch61, f.fetching[hashes[0]].fetchHeader, hashes
go func() {
if f.fetchingHook != nil {
f.fetchingHook(hashes)
}
- fetcher(hashes)
+ if fetchBlocks != nil {
+ // Use old eth/61 protocol to retrieve whole blocks
+ fetchBlocks(hashes)
+ } else {
+ // Use new eth/62 protocol to retrieve headers first
+ for _, hash := range hashes {
+ fetchHeader(hash) // Suboptimal, but protocol doesn't allow batch header retrievals
+ }
+ }
}()
}
// Schedule the next fetch if blocks are still pending
- f.reschedule(fetch)
+ f.rescheduleFetch(fetchTimer)
- case filter := <-f.filter:
+ case <-completeTimer.C:
+ // At least one header's timer ran out, retrieve everything
+ request := make(map[string][]common.Hash)
+
+ for hash, announces := range f.fetched {
+ // Pick a random peer to retrieve from, reset all others
+ announce := announces[rand.Intn(len(announces))]
+ f.forgetHash(hash)
+
+ // If the block still didn't arrive, queue for completion
+ if f.getBlock(hash) == nil {
+ request[announce.origin] = append(request[announce.origin], hash)
+ f.completing[hash] = announce
+ }
+ }
+ // Send out all block body requests
+ for peer, hashes := range request {
+ if glog.V(logger.Detail) && len(hashes) > 0 {
+ list := "["
+ for _, hash := range hashes {
+ list += fmt.Sprintf("%x…, ", hash[:4])
+ }
+ list = list[:len(list)-2] + "]"
+
+ glog.V(logger.Detail).Infof("[eth/62] Peer %s: fetching bodies %s", peer, list)
+ }
+ // Create a closure of the fetch and schedule in on a new thread
+ if f.completingHook != nil {
+ f.completingHook(hashes)
+ }
+ go f.completing[hashes[0]].fetchBodies(hashes)
+ }
+ // Schedule the next fetch if blocks are still pending
+ f.rescheduleComplete(completeTimer)
+
+ case filter := <-f.blockFilter:
// Blocks arrived, extract any explicit fetches, return all else
var blocks types.Blocks
select {
@@ -352,12 +509,135 @@ func (f *Fetcher) loop() {
f.enqueue(announce.origin, block)
}
}
+
+ case filter := <-f.headerFilter:
+ // Headers arrived from a remote peer. Extract those that were explicitly
+ // requested by the fetcher, and return everything else so it's delivered
+ // to other parts of the system.
+ var task *headerFilterTask
+ select {
+ case task = <-filter:
+ case <-f.quit:
+ return
+ }
+ // Split the batch of headers into unknown ones (to return to the caller),
+ // known incomplete ones (requiring body retrievals) and completed blocks.
+ unknown, incomplete, complete := []*types.Header{}, []*announce{}, []*types.Block{}
+ for _, header := range task.headers {
+ hash := header.Hash()
+
+ // Filter fetcher-requested headers from other synchronisation algorithms
+ if announce := f.fetching[hash]; announce != nil && f.fetched[hash] == nil && f.completing[hash] == nil && f.queued[hash] == nil {
+ // If the delivered header does not match the promised number, drop the announcer
+ if header.Number.Uint64() != announce.number {
+ glog.V(logger.Detail).Infof("[eth/62] Peer %s: invalid block number for [%x…]: announced %d, provided %d", announce.origin, header.Hash().Bytes()[:4], announce.number, header.Number.Uint64())
+ f.dropPeer(announce.origin)
+ f.forgetHash(hash)
+ continue
+ }
+ // Only keep if not imported by other means
+ if f.getBlock(hash) == nil {
+ announce.header = header
+ announce.time = task.time
+
+ // If the block is empty (header only), short circuit into the final import queue
+ if header.TxHash == types.DeriveSha(types.Transactions{}) && header.UncleHash == types.CalcUncleHash([]*types.Header{}) {
+ glog.V(logger.Detail).Infof("[eth/62] Peer %s: block #%d [%x…] empty, skipping body retrieval", announce.origin, header.Number.Uint64(), header.Hash().Bytes()[:4])
+
+ complete = append(complete, types.NewBlockWithHeader(header))
+ f.completing[hash] = announce
+ continue
+ }
+ // Otherwise add to the list of blocks needing completion
+ incomplete = append(incomplete, announce)
+ } else {
+ glog.V(logger.Detail).Infof("[eth/62] Peer %s: block #%d [%x…] already imported, discarding header", announce.origin, header.Number.Uint64(), header.Hash().Bytes()[:4])
+ f.forgetHash(hash)
+ }
+ } else {
+ // Fetcher doesn't know about it, add to the return list
+ unknown = append(unknown, header)
+ }
+ }
+ select {
+ case filter <- &headerFilterTask{headers: unknown, time: task.time}:
+ case <-f.quit:
+ return
+ }
+ // Schedule the retrieved headers for body completion
+ for _, announce := range incomplete {
+ hash := announce.header.Hash()
+ if _, ok := f.completing[hash]; ok {
+ continue
+ }
+ f.fetched[hash] = append(f.fetched[hash], announce)
+ if len(f.fetched) == 1 {
+ f.rescheduleComplete(completeTimer)
+ }
+ }
+ // Schedule the header-only blocks for import
+ for _, block := range complete {
+ if announce := f.completing[block.Hash()]; announce != nil {
+ f.enqueue(announce.origin, block)
+ }
+ }
+
+ case filter := <-f.bodyFilter:
+ // Block bodies arrived, extract any explicitly requested blocks, return the rest
+ var task *bodyFilterTask
+ select {
+ case task = <-filter:
+ case <-f.quit:
+ return
+ }
+
+ blocks := []*types.Block{}
+ for i := 0; i < len(task.transactions) && i < len(task.uncles); i++ {
+ // Match up a body to any possible completion request
+ matched := false
+
+ for hash, announce := range f.completing {
+ if f.queued[hash] == nil {
+ txnHash := types.DeriveSha(types.Transactions(task.transactions[i]))
+ uncleHash := types.CalcUncleHash(task.uncles[i])
+
+ if txnHash == announce.header.TxHash && uncleHash == announce.header.UncleHash {
+ // Mark the body matched, reassemble if still unknown
+ matched = true
+
+ if f.getBlock(hash) == nil {
+ blocks = append(blocks, types.NewBlockWithHeader(announce.header).WithBody(task.transactions[i], task.uncles[i]))
+ } else {
+ f.forgetHash(hash)
+ }
+ }
+ }
+ }
+ if matched {
+ task.transactions = append(task.transactions[:i], task.transactions[i+1:]...)
+ task.uncles = append(task.uncles[:i], task.uncles[i+1:]...)
+ i--
+ continue
+ }
+ }
+
+ select {
+ case filter <- task:
+ case <-f.quit:
+ return
+ }
+ // Schedule the retrieved blocks for ordered import
+ for _, block := range blocks {
+ if announce := f.completing[block.Hash()]; announce != nil {
+ f.enqueue(announce.origin, block)
+ }
+ }
}
}
}
-// reschedule resets the specified fetch timer to the next announce timeout.
-func (f *Fetcher) reschedule(fetch *time.Timer) {
+// rescheduleFetch resets the specified fetch timer to the next announce timeout.
+func (f *Fetcher) rescheduleFetch(fetch *time.Timer) {
// Short circuit if no blocks are announced
if len(f.announced) == 0 {
return
@@ -372,6 +652,22 @@ func (f *Fetcher) reschedule(fetch *time.Timer) {
fetch.Reset(arriveTimeout - time.Since(earliest))
}
+// rescheduleComplete resets the specified completion timer to the next fetch timeout.
+func (f *Fetcher) rescheduleComplete(complete *time.Timer) {
+ // Short circuit if no headers are fetched
+ if len(f.fetched) == 0 {
+ return
+ }
+ // Otherwise find the earliest expiring announcement
+ earliest := time.Now()
+ for _, announces := range f.fetched {
+ if earliest.After(announces[0].time) {
+ earliest = announces[0].time
+ }
+ }
+ complete.Reset(gatherSlack - time.Since(earliest))
+}
+
// enqueue schedules a new future import operation, if the block to be imported
// has not yet been seen.
func (f *Fetcher) enqueue(peer string, block *types.Block) {
@@ -380,13 +676,15 @@ func (f *Fetcher) enqueue(peer string, block *types.Block) {
// Ensure the peer isn't DOSing us
count := f.queues[peer] + 1
if count > blockLimit {
- glog.V(logger.Debug).Infof("Peer %s: discarded block #%d [%x], exceeded allowance (%d)", peer, block.NumberU64(), hash.Bytes()[:4], blockLimit)
+ glog.V(logger.Debug).Infof("Peer %s: discarded block #%d [%x…], exceeded allowance (%d)", peer, block.NumberU64(), hash.Bytes()[:4], blockLimit)
+ f.forgetHash(hash)
return
}
// Discard any past or too distant blocks
if dist := int64(block.NumberU64()) - int64(f.chainHeight()); dist < -maxUncleDist || dist > maxQueueDist {
- glog.V(logger.Debug).Infof("Peer %s: discarded block #%d [%x], distance %d", peer, block.NumberU64(), hash.Bytes()[:4], dist)
+ glog.V(logger.Debug).Infof("Peer %s: discarded block #%d [%x…], distance %d", peer, block.NumberU64(), hash.Bytes()[:4], dist)
discardMeter.Mark(1)
+ f.forgetHash(hash)
return
}
// Schedule the block for future importing
@@ -400,7 +698,7 @@ func (f *Fetcher) enqueue(peer string, block *types.Block) {
f.queue.Push(op, -float32(block.NumberU64()))
if glog.V(logger.Debug) {
- glog.Infof("Peer %s: queued block #%d [%x], total %v", peer, block.NumberU64(), hash.Bytes()[:4], f.queue.Size())
+ glog.Infof("Peer %s: queued block #%d [%x…], total %v", peer, block.NumberU64(), hash.Bytes()[:4], f.queue.Size())
}
}
}
@@ -412,13 +710,14 @@ func (f *Fetcher) insert(peer string, block *types.Block) {
hash := block.Hash()
// Run the import on a new thread
- glog.V(logger.Debug).Infof("Peer %s: importing block #%d [%x]", peer, block.NumberU64(), hash[:4])
+ glog.V(logger.Debug).Infof("Peer %s: importing block #%d [%x…]", peer, block.NumberU64(), hash[:4])
go func() {
defer func() { f.done <- hash }()
// If the parent's unknown, abort insertion
parent := f.getBlock(block.ParentHash())
if parent == nil {
+ glog.V(logger.Debug).Infof("Peer %s: parent []%x] of block #%d [%x…] unknown", block.ParentHash().Bytes()[:4], peer, block.NumberU64(), hash[:4])
return
}
// Quickly validate the header and propagate the block if it passes
@@ -434,13 +733,13 @@ func (f *Fetcher) insert(peer string, block *types.Block) {
default:
// Something went very wrong, drop the peer
- glog.V(logger.Debug).Infof("Peer %s: block #%d [%x] verification failed: %v", peer, block.NumberU64(), hash[:4], err)
+ glog.V(logger.Debug).Infof("Peer %s: block #%d [%x…] verification failed: %v", peer, block.NumberU64(), hash[:4], err)
f.dropPeer(peer)
return
}
// Run the actual import and log any issues
if _, err := f.insertChain(types.Blocks{block}); err != nil {
- glog.V(logger.Warn).Infof("Peer %s: block #%d [%x] import failed: %v", peer, block.NumberU64(), hash[:4], err)
+ glog.V(logger.Warn).Infof("Peer %s: block #%d [%x…] import failed: %v", peer, block.NumberU64(), hash[:4], err)
return
}
// If import succeeded, broadcast the block
@@ -474,9 +773,27 @@ func (f *Fetcher) forgetHash(hash common.Hash) {
}
delete(f.fetching, hash)
}
+
+ // Remove any pending completion requests and decrement the DOS counters
+ for _, announce := range f.fetched[hash] {
+ f.announces[announce.origin]--
+ if f.announces[announce.origin] == 0 {
+ delete(f.announces, announce.origin)
+ }
+ }
+ delete(f.fetched, hash)
+
+ // Remove any pending completions and decrement the DOS counters
+ if announce := f.completing[hash]; announce != nil {
+ f.announces[announce.origin]--
+ if f.announces[announce.origin] == 0 {
+ delete(f.announces, announce.origin)
+ }
+ delete(f.completing, hash)
+ }
}
-// forgetBlock removes all traces of a queued block frmo the fetcher's internal
+// forgetBlock removes all traces of a queued block from the fetcher's internal
// state.
func (f *Fetcher) forgetBlock(hash common.Hash) {
if insert := f.queued[hash]; insert != nil {
diff --git a/eth/fetcher/fetcher_test.go b/eth/fetcher/fetcher_test.go
index b0d9ce843..707d8d758 100644
--- a/eth/fetcher/fetcher_test.go
+++ b/eth/fetcher/fetcher_test.go
@@ -27,21 +27,39 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/params"
)
var (
testdb, _ = ethdb.NewMemDatabase()
- genesis = core.GenesisBlockForTesting(testdb, common.Address{}, big.NewInt(0))
+ testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+ testAddress = crypto.PubkeyToAddress(testKey.PublicKey)
+ genesis = core.GenesisBlockForTesting(testdb, testAddress, big.NewInt(1000000000))
unknownBlock = types.NewBlock(&types.Header{GasLimit: params.GenesisGasLimit}, nil, nil, nil)
)
// makeChain creates a chain of n blocks starting at and including parent.
-// the returned hash chain is ordered head->parent.
+// the returned hash chain is ordered head->parent. In addition, every 3rd block
+// contains a transaction and every 5th an uncle to allow testing correct block
+// reassembly.
func makeChain(n int, seed byte, parent *types.Block) ([]common.Hash, map[common.Hash]*types.Block) {
- blocks := core.GenerateChain(parent, testdb, n, func(i int, gen *core.BlockGen) {
- gen.SetCoinbase(common.Address{seed})
+ blocks := core.GenerateChain(parent, testdb, n, func(i int, block *core.BlockGen) {
+ block.SetCoinbase(common.Address{seed})
+
+ // If the block number is multiple of 3, send a bonus transaction to the miner
+ if parent == genesis && i%3 == 0 {
+ tx, err := types.NewTransaction(block.TxNonce(testAddress), common.Address{seed}, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(testKey)
+ if err != nil {
+ panic(err)
+ }
+ block.AddTx(tx)
+ }
+ // If the block number is a multiple of 5, add a bonus uncle to the block
+ if i%5 == 0 {
+ block.AddUncle(&types.Header{ParentHash: block.PrevBlock(i - 1).Hash(), Number: big.NewInt(int64(i - 1))})
+ }
})
hashes := make([]common.Hash, n+1)
hashes[len(hashes)-1] = parent.Hash()
@@ -60,6 +78,7 @@ type fetcherTester struct {
hashes []common.Hash // Hash chain belonging to the tester
blocks map[common.Hash]*types.Block // Blocks belonging to the tester
+ drops map[string]bool // Map of peers dropped by the fetcher
lock sync.RWMutex
}
@@ -69,6 +88,7 @@ func newTester() *fetcherTester {
tester := &fetcherTester{
hashes: []common.Hash{genesis.Hash()},
blocks: map[common.Hash]*types.Block{genesis.Hash(): genesis},
+ drops: make(map[string]bool),
}
tester.fetcher = New(tester.getBlock, tester.verifyBlock, tester.broadcastBlock, tester.chainHeight, tester.insertChain, tester.dropPeer)
tester.fetcher.Start()
@@ -122,12 +142,14 @@ func (f *fetcherTester) insertChain(blocks types.Blocks) (int, error) {
return 0, nil
}
-// dropPeer is a nop placeholder for the peer removal.
+// dropPeer is an emulator for the peer removal, simply accumulating the various
+// peers dropped by the fetcher.
func (f *fetcherTester) dropPeer(peer string) {
+ f.drops[peer] = true
}
-// peerFetcher retrieves a fetcher associated with a simulated peer.
-func (f *fetcherTester) makeFetcher(blocks map[common.Hash]*types.Block) blockRequesterFn {
+// makeBlockFetcher retrieves a block fetcher associated with a simulated peer.
+func (f *fetcherTester) makeBlockFetcher(blocks map[common.Hash]*types.Block) blockRequesterFn {
closure := make(map[common.Hash]*types.Block)
for hash, block := range blocks {
closure[hash] = block
@@ -142,18 +164,105 @@ func (f *fetcherTester) makeFetcher(blocks map[common.Hash]*types.Block) blockRe
}
}
// Return on a new thread
- go f.fetcher.Filter(blocks)
+ go f.fetcher.FilterBlocks(blocks)
+
+ return nil
+ }
+}
+
+// makeHeaderFetcher retrieves a block header fetcher associated with a simulated peer.
+func (f *fetcherTester) makeHeaderFetcher(blocks map[common.Hash]*types.Block, drift time.Duration) headerRequesterFn {
+ closure := make(map[common.Hash]*types.Block)
+ for hash, block := range blocks {
+ closure[hash] = block
+ }
+ // Create a function that return a header from the closure
+ return func(hash common.Hash) error {
+ // Gather the blocks to return
+ headers := make([]*types.Header, 0, 1)
+ if block, ok := closure[hash]; ok {
+ headers = append(headers, block.Header())
+ }
+ // Return on a new thread
+ go f.fetcher.FilterHeaders(headers, time.Now().Add(drift))
+
+ return nil
+ }
+}
+
+// makeBodyFetcher retrieves a block body fetcher associated with a simulated peer.
+func (f *fetcherTester) makeBodyFetcher(blocks map[common.Hash]*types.Block, drift time.Duration) bodyRequesterFn {
+ closure := make(map[common.Hash]*types.Block)
+ for hash, block := range blocks {
+ closure[hash] = block
+ }
+ // Create a function that returns blocks from the closure
+ return func(hashes []common.Hash) error {
+ // Gather the block bodies to return
+ transactions := make([][]*types.Transaction, 0, len(hashes))
+ uncles := make([][]*types.Header, 0, len(hashes))
+
+ for _, hash := range hashes {
+ if block, ok := closure[hash]; ok {
+ transactions = append(transactions, block.Transactions())
+ uncles = append(uncles, block.Uncles())
+ }
+ }
+ // Return on a new thread
+ go f.fetcher.FilterBodies(transactions, uncles, time.Now().Add(drift))
return nil
}
}
+// verifyFetchingEvent verifies that one single event arrive on an fetching channel.
+func verifyFetchingEvent(t *testing.T, fetching chan []common.Hash, arrive bool) {
+ if arrive {
+ select {
+ case <-fetching:
+ case <-time.After(time.Second):
+ t.Fatalf("fetching timeout")
+ }
+ } else {
+ select {
+ case <-fetching:
+ t.Fatalf("fetching invoked")
+ case <-time.After(10 * time.Millisecond):
+ }
+ }
+}
+
+// verifyCompletingEvent verifies that one single event arrive on an completing channel.
+func verifyCompletingEvent(t *testing.T, completing chan []common.Hash, arrive bool) {
+ if arrive {
+ select {
+ case <-completing:
+ case <-time.After(time.Second):
+ t.Fatalf("completing timeout")
+ }
+ } else {
+ select {
+ case <-completing:
+ t.Fatalf("completing invoked")
+ case <-time.After(10 * time.Millisecond):
+ }
+ }
+}
+
// verifyImportEvent verifies that one single event arrive on an import channel.
-func verifyImportEvent(t *testing.T, imported chan *types.Block) {
- select {
- case <-imported:
- case <-time.After(time.Second):
- t.Fatalf("import timeout")
+func verifyImportEvent(t *testing.T, imported chan *types.Block, arrive bool) {
+ if arrive {
+ select {
+ case <-imported:
+ case <-time.After(time.Second):
+ t.Fatalf("import timeout")
+ }
+ } else {
+ select {
+ case <-imported:
+ t.Fatalf("import invoked")
+ case <-time.After(10 * time.Millisecond):
+ }
}
}
@@ -164,7 +273,7 @@ func verifyImportCount(t *testing.T, imported chan *types.Block, count int) {
select {
case <-imported:
case <-time.After(time.Second):
- t.Fatalf("block %d: import timeout", i)
+ t.Fatalf("block %d: import timeout", i+1)
}
}
verifyImportDone(t, imported)
@@ -181,51 +290,78 @@ func verifyImportDone(t *testing.T, imported chan *types.Block) {
// Tests that a fetcher accepts block announcements and initiates retrievals for
// them, successfully importing into the local chain.
-func TestSequentialAnnouncements(t *testing.T) {
+func TestSequentialAnnouncements61(t *testing.T) { testSequentialAnnouncements(t, 61) }
+func TestSequentialAnnouncements62(t *testing.T) { testSequentialAnnouncements(t, 62) }
+func TestSequentialAnnouncements63(t *testing.T) { testSequentialAnnouncements(t, 63) }
+func TestSequentialAnnouncements64(t *testing.T) { testSequentialAnnouncements(t, 64) }
+
+func testSequentialAnnouncements(t *testing.T, protocol int) {
// Create a chain of blocks to import
targetBlocks := 4 * hashLimit
hashes, blocks := makeChain(targetBlocks, 0, genesis)
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
// Iteratively announce blocks until all are imported
imported := make(chan *types.Block)
tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
for i := len(hashes) - 2; i >= 0; i-- {
- tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), fetcher)
- verifyImportEvent(t, imported)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), blockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ }
+ verifyImportEvent(t, imported, true)
}
verifyImportDone(t, imported)
}
// Tests that if blocks are announced by multiple peers (or even the same buggy
// peer), they will only get downloaded at most once.
-func TestConcurrentAnnouncements(t *testing.T) {
+func TestConcurrentAnnouncements61(t *testing.T) { testConcurrentAnnouncements(t, 61) }
+func TestConcurrentAnnouncements62(t *testing.T) { testConcurrentAnnouncements(t, 62) }
+func TestConcurrentAnnouncements63(t *testing.T) { testConcurrentAnnouncements(t, 63) }
+func TestConcurrentAnnouncements64(t *testing.T) { testConcurrentAnnouncements(t, 64) }
+
+func testConcurrentAnnouncements(t *testing.T, protocol int) {
// Create a chain of blocks to import
targetBlocks := 4 * hashLimit
hashes, blocks := makeChain(targetBlocks, 0, genesis)
// Assemble a tester with a built in counter for the requests
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
counter := uint32(0)
- wrapper := func(hashes []common.Hash) error {
+ blockWrapper := func(hashes []common.Hash) error {
atomic.AddUint32(&counter, uint32(len(hashes)))
- return fetcher(hashes)
+ return blockFetcher(hashes)
+ }
+ headerWrapper := func(hash common.Hash) error {
+ atomic.AddUint32(&counter, 1)
+ return headerFetcher(hash)
}
// Iteratively announce blocks until all are imported
imported := make(chan *types.Block)
tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
for i := len(hashes) - 2; i >= 0; i-- {
- tester.fetcher.Notify("first", hashes[i], 0, time.Now().Add(-arriveTimeout), wrapper)
- tester.fetcher.Notify("second", hashes[i], 0, time.Now().Add(-arriveTimeout+time.Millisecond), wrapper)
- tester.fetcher.Notify("second", hashes[i], 0, time.Now().Add(-arriveTimeout-time.Millisecond), wrapper)
-
- verifyImportEvent(t, imported)
+ if protocol < 62 {
+ tester.fetcher.Notify("first", hashes[i], 0, time.Now().Add(-arriveTimeout), blockWrapper, nil, nil)
+ tester.fetcher.Notify("second", hashes[i], 0, time.Now().Add(-arriveTimeout+time.Millisecond), blockWrapper, nil, nil)
+ tester.fetcher.Notify("second", hashes[i], 0, time.Now().Add(-arriveTimeout-time.Millisecond), blockWrapper, nil, nil)
+ } else {
+ tester.fetcher.Notify("first", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, headerWrapper, bodyFetcher)
+ tester.fetcher.Notify("second", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout+time.Millisecond), nil, headerWrapper, bodyFetcher)
+ tester.fetcher.Notify("second", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout-time.Millisecond), nil, headerWrapper, bodyFetcher)
+ }
+ verifyImportEvent(t, imported, true)
}
verifyImportDone(t, imported)
@@ -237,56 +373,90 @@ func TestConcurrentAnnouncements(t *testing.T) {
// Tests that announcements arriving while a previous is being fetched still
// results in a valid import.
-func TestOverlappingAnnouncements(t *testing.T) {
+func TestOverlappingAnnouncements61(t *testing.T) { testOverlappingAnnouncements(t, 61) }
+func TestOverlappingAnnouncements62(t *testing.T) { testOverlappingAnnouncements(t, 62) }
+func TestOverlappingAnnouncements63(t *testing.T) { testOverlappingAnnouncements(t, 63) }
+func TestOverlappingAnnouncements64(t *testing.T) { testOverlappingAnnouncements(t, 64) }
+
+func testOverlappingAnnouncements(t *testing.T, protocol int) {
// Create a chain of blocks to import
targetBlocks := 4 * hashLimit
hashes, blocks := makeChain(targetBlocks, 0, genesis)
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
// Iteratively announce blocks, but overlap them continuously
- fetching := make(chan []common.Hash)
+ overlap := 16
imported := make(chan *types.Block, len(hashes)-1)
- tester.fetcher.fetchingHook = func(hashes []common.Hash) { fetching <- hashes }
+ for i := 0; i < overlap; i++ {
+ imported <- nil
+ }
tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
for i := len(hashes) - 2; i >= 0; i-- {
- tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), fetcher)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), blockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ }
select {
- case <-fetching:
+ case <-imported:
case <-time.After(time.Second):
- t.Fatalf("hash %d: announce timeout", len(hashes)-i)
+ t.Fatalf("block %d: import timeout", len(hashes)-i)
}
}
// Wait for all the imports to complete and check count
- verifyImportCount(t, imported, len(hashes)-1)
+ verifyImportCount(t, imported, overlap)
}
// Tests that announces already being retrieved will not be duplicated.
-func TestPendingDeduplication(t *testing.T) {
+func TestPendingDeduplication61(t *testing.T) { testPendingDeduplication(t, 61) }
+func TestPendingDeduplication62(t *testing.T) { testPendingDeduplication(t, 62) }
+func TestPendingDeduplication63(t *testing.T) { testPendingDeduplication(t, 63) }
+func TestPendingDeduplication64(t *testing.T) { testPendingDeduplication(t, 64) }
+
+func testPendingDeduplication(t *testing.T, protocol int) {
// Create a hash and corresponding block
hashes, blocks := makeChain(1, 0, genesis)
// Assemble a tester with a built in counter and delayed fetcher
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
delay := 50 * time.Millisecond
counter := uint32(0)
- wrapper := func(hashes []common.Hash) error {
+ blockWrapper := func(hashes []common.Hash) error {
atomic.AddUint32(&counter, uint32(len(hashes)))
// Simulate a long running fetch
go func() {
time.Sleep(delay)
- fetcher(hashes)
+ blockFetcher(hashes)
+ }()
+ return nil
+ }
+ headerWrapper := func(hash common.Hash) error {
+ atomic.AddUint32(&counter, 1)
+
+ // Simulate a long running fetch
+ go func() {
+ time.Sleep(delay)
+ headerFetcher(hash)
}()
return nil
}
// Announce the same block many times until it's fetched (wait for any pending ops)
for tester.getBlock(hashes[0]) == nil {
- tester.fetcher.Notify("repeater", hashes[0], 0, time.Now().Add(-arriveTimeout), wrapper)
+ if protocol < 62 {
+ tester.fetcher.Notify("repeater", hashes[0], 0, time.Now().Add(-arriveTimeout), blockWrapper, nil, nil)
+ } else {
+ tester.fetcher.Notify("repeater", hashes[0], 1, time.Now().Add(-arriveTimeout), nil, headerWrapper, bodyFetcher)
+ }
time.Sleep(time.Millisecond)
}
time.Sleep(delay)
@@ -302,14 +472,21 @@ func TestPendingDeduplication(t *testing.T) {
// Tests that announcements retrieved in a random order are cached and eventually
// imported when all the gaps are filled in.
-func TestRandomArrivalImport(t *testing.T) {
+func TestRandomArrivalImport61(t *testing.T) { testRandomArrivalImport(t, 61) }
+func TestRandomArrivalImport62(t *testing.T) { testRandomArrivalImport(t, 62) }
+func TestRandomArrivalImport63(t *testing.T) { testRandomArrivalImport(t, 63) }
+func TestRandomArrivalImport64(t *testing.T) { testRandomArrivalImport(t, 64) }
+
+func testRandomArrivalImport(t *testing.T, protocol int) {
// Create a chain of blocks to import, and choose one to delay
targetBlocks := maxQueueDist
hashes, blocks := makeChain(targetBlocks, 0, genesis)
skip := targetBlocks / 2
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
// Iteratively announce blocks, skipping one entry
imported := make(chan *types.Block, len(hashes)-1)
@@ -317,25 +494,40 @@ func TestRandomArrivalImport(t *testing.T) {
for i := len(hashes) - 1; i >= 0; i-- {
if i != skip {
- tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), fetcher)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), blockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ }
time.Sleep(time.Millisecond)
}
}
// Finally announce the skipped entry and check full import
- tester.fetcher.Notify("valid", hashes[skip], 0, time.Now().Add(-arriveTimeout), fetcher)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[skip], 0, time.Now().Add(-arriveTimeout), blockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[skip], uint64(len(hashes)-skip-1), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ }
verifyImportCount(t, imported, len(hashes)-1)
}
// Tests that direct block enqueues (due to block propagation vs. hash announce)
// are correctly schedule, filling and import queue gaps.
-func TestQueueGapFill(t *testing.T) {
+func TestQueueGapFill61(t *testing.T) { testQueueGapFill(t, 61) }
+func TestQueueGapFill62(t *testing.T) { testQueueGapFill(t, 62) }
+func TestQueueGapFill63(t *testing.T) { testQueueGapFill(t, 63) }
+func TestQueueGapFill64(t *testing.T) { testQueueGapFill(t, 64) }
+
+func testQueueGapFill(t *testing.T, protocol int) {
// Create a chain of blocks to import, and choose one to not announce at all
targetBlocks := maxQueueDist
hashes, blocks := makeChain(targetBlocks, 0, genesis)
skip := targetBlocks / 2
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
// Iteratively announce blocks, skipping one entry
imported := make(chan *types.Block, len(hashes)-1)
@@ -343,7 +535,11 @@ func TestQueueGapFill(t *testing.T) {
for i := len(hashes) - 1; i >= 0; i-- {
if i != skip {
- tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), fetcher)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), blockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ }
time.Sleep(time.Millisecond)
}
}
@@ -354,13 +550,20 @@ func TestQueueGapFill(t *testing.T) {
// Tests that blocks arriving from various sources (multiple propagations, hash
// announces, etc) do not get scheduled for import multiple times.
-func TestImportDeduplication(t *testing.T) {
+func TestImportDeduplication61(t *testing.T) { testImportDeduplication(t, 61) }
+func TestImportDeduplication62(t *testing.T) { testImportDeduplication(t, 62) }
+func TestImportDeduplication63(t *testing.T) { testImportDeduplication(t, 63) }
+func TestImportDeduplication64(t *testing.T) { testImportDeduplication(t, 64) }
+
+func testImportDeduplication(t *testing.T, protocol int) {
// Create two blocks to import (one for duplication, the other for stalling)
hashes, blocks := makeChain(2, 0, genesis)
// Create the tester and wrap the importer with a counter
tester := newTester()
- fetcher := tester.makeFetcher(blocks)
+ blockFetcher := tester.makeBlockFetcher(blocks)
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
counter := uint32(0)
tester.fetcher.insertChain = func(blocks types.Blocks) (int, error) {
@@ -374,7 +577,11 @@ func TestImportDeduplication(t *testing.T) {
tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
// Announce the duplicating block, wait for retrieval, and also propagate directly
- tester.fetcher.Notify("valid", hashes[0], 0, time.Now().Add(-arriveTimeout), fetcher)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[0], 0, time.Now().Add(-arriveTimeout), blockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[0], 1, time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ }
<-fetching
tester.fetcher.Enqueue("valid", blocks[hashes[0]])
@@ -391,35 +598,157 @@ func TestImportDeduplication(t *testing.T) {
}
// Tests that blocks with numbers much lower or higher than out current head get
-// discarded no prevent wasting resources on useless blocks from faulty peers.
-func TestDistantDiscarding(t *testing.T) {
- // Create a long chain to import
+// discarded to prevent wasting resources on useless blocks from faulty peers.
+func TestDistantPropagationDiscarding(t *testing.T) {
+ // Create a long chain to import and define the discard boundaries
hashes, blocks := makeChain(3*maxQueueDist, 0, genesis)
head := hashes[len(hashes)/2]
+ low, high := len(hashes)/2+maxUncleDist+1, len(hashes)/2-maxQueueDist-1
+
// Create a tester and simulate a head block being the middle of the above chain
tester := newTester()
tester.hashes = []common.Hash{head}
tester.blocks = map[common.Hash]*types.Block{head: blocks[head]}
// Ensure that a block with a lower number than the threshold is discarded
- tester.fetcher.Enqueue("lower", blocks[hashes[0]])
+ tester.fetcher.Enqueue("lower", blocks[hashes[low]])
time.Sleep(10 * time.Millisecond)
if !tester.fetcher.queue.Empty() {
t.Fatalf("fetcher queued stale block")
}
// Ensure that a block with a higher number than the threshold is discarded
- tester.fetcher.Enqueue("higher", blocks[hashes[len(hashes)-1]])
+ tester.fetcher.Enqueue("higher", blocks[hashes[high]])
time.Sleep(10 * time.Millisecond)
if !tester.fetcher.queue.Empty() {
t.Fatalf("fetcher queued future block")
}
}
+// Tests that announcements with numbers much lower or higher than out current
+// head get discarded to prevent wasting resources on useless blocks from faulty
+// peers.
+func TestDistantAnnouncementDiscarding62(t *testing.T) { testDistantAnnouncementDiscarding(t, 62) }
+func TestDistantAnnouncementDiscarding63(t *testing.T) { testDistantAnnouncementDiscarding(t, 63) }
+func TestDistantAnnouncementDiscarding64(t *testing.T) { testDistantAnnouncementDiscarding(t, 64) }
+
+func testDistantAnnouncementDiscarding(t *testing.T, protocol int) {
+ // Create a long chain to import and define the discard boundaries
+ hashes, blocks := makeChain(3*maxQueueDist, 0, genesis)
+ head := hashes[len(hashes)/2]
+
+ low, high := len(hashes)/2+maxUncleDist+1, len(hashes)/2-maxQueueDist-1
+
+ // Create a tester and simulate a head block being the middle of the above chain
+ tester := newTester()
+ tester.hashes = []common.Hash{head}
+ tester.blocks = map[common.Hash]*types.Block{head: blocks[head]}
+
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
+
+ fetching := make(chan struct{}, 2)
+ tester.fetcher.fetchingHook = func(hashes []common.Hash) { fetching <- struct{}{} }
+
+ // Ensure that a block with a lower number than the threshold is discarded
+ tester.fetcher.Notify("lower", hashes[low], blocks[hashes[low]].NumberU64(), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ select {
+ case <-time.After(50 * time.Millisecond):
+ case <-fetching:
+ t.Fatalf("fetcher requested stale header")
+ }
+ // Ensure that a block with a higher number than the threshold is discarded
+ tester.fetcher.Notify("higher", hashes[high], blocks[hashes[high]].NumberU64(), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ select {
+ case <-time.After(50 * time.Millisecond):
+ case <-fetching:
+ t.Fatalf("fetcher requested future header")
+ }
+}
+
+// Tests that peers announcing blocks with invalid numbers (i.e. not matching
+// the headers provided afterwards) get dropped as malicious.
+func TestInvalidNumberAnnouncement62(t *testing.T) { testInvalidNumberAnnouncement(t, 62) }
+func TestInvalidNumberAnnouncement63(t *testing.T) { testInvalidNumberAnnouncement(t, 63) }
+func TestInvalidNumberAnnouncement64(t *testing.T) { testInvalidNumberAnnouncement(t, 64) }
+
+func testInvalidNumberAnnouncement(t *testing.T, protocol int) {
+ // Create a single block to import and check numbers against
+ hashes, blocks := makeChain(1, 0, genesis)
+
+ tester := newTester()
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
+
+ imported := make(chan *types.Block)
+ tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
+
+ // Announce a block with a bad number, check for immediate drop
+ tester.fetcher.Notify("bad", hashes[0], 2, time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ verifyImportEvent(t, imported, false)
+
+ if !tester.drops["bad"] {
+ t.Fatalf("peer with invalid numbered announcement not dropped")
+ }
+ // Make sure a good announcement passes without a drop
+ tester.fetcher.Notify("good", hashes[0], 1, time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+ verifyImportEvent(t, imported, true)
+
+ if tester.drops["good"] {
+ t.Fatalf("peer with valid numbered announcement dropped")
+ }
+ verifyImportDone(t, imported)
+}
+
+// Tests that if a block is empty (i.e. header only), no body request should be
+// made, and instead the header should be assembled into a whole block in itself.
+func TestEmptyBlockShortCircuit62(t *testing.T) { testEmptyBlockShortCircuit(t, 62) }
+func TestEmptyBlockShortCircuit63(t *testing.T) { testEmptyBlockShortCircuit(t, 63) }
+func TestEmptyBlockShortCircuit64(t *testing.T) { testEmptyBlockShortCircuit(t, 64) }
+
+func testEmptyBlockShortCircuit(t *testing.T, protocol int) {
+ // Create a chain of blocks to import
+ hashes, blocks := makeChain(32, 0, genesis)
+
+ tester := newTester()
+ headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ bodyFetcher := tester.makeBodyFetcher(blocks, 0)
+
+ // Add a monitoring hook for all internal events
+ fetching := make(chan []common.Hash)
+ tester.fetcher.fetchingHook = func(hashes []common.Hash) { fetching <- hashes }
+
+ completing := make(chan []common.Hash)
+ tester.fetcher.completingHook = func(hashes []common.Hash) { completing <- hashes }
+
+ imported := make(chan *types.Block)
+ tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
+
+ // Iteratively announce blocks until all are imported
+ for i := len(hashes) - 2; i >= 0; i-- {
+ tester.fetcher.Notify("valid", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
+
+ // All announces should fetch the header
+ verifyFetchingEvent(t, fetching, true)
+
+ // Only blocks with data contents should request bodies
+ verifyCompletingEvent(t, completing, len(blocks[hashes[i]].Transactions()) > 0 || len(blocks[hashes[i]].Uncles()) > 0)
+
+ // Irrelevant of the construct, import should succeed
+ verifyImportEvent(t, imported, true)
+ }
+ verifyImportDone(t, imported)
+}
+
// Tests that a peer is unable to use unbounded memory with sending infinite
// block announcements to a node, but that even in the face of such an attack,
// the fetcher remains operational.
-func TestHashMemoryExhaustionAttack(t *testing.T) {
+func TestHashMemoryExhaustionAttack61(t *testing.T) { testHashMemoryExhaustionAttack(t, 61) }
+func TestHashMemoryExhaustionAttack62(t *testing.T) { testHashMemoryExhaustionAttack(t, 62) }
+func TestHashMemoryExhaustionAttack63(t *testing.T) { testHashMemoryExhaustionAttack(t, 63) }
+func TestHashMemoryExhaustionAttack64(t *testing.T) { testHashMemoryExhaustionAttack(t, 64) }
+
+func testHashMemoryExhaustionAttack(t *testing.T, protocol int) {
// Create a tester with instrumented import hooks
tester := newTester()
@@ -429,17 +758,29 @@ func TestHashMemoryExhaustionAttack(t *testing.T) {
// Create a valid chain and an infinite junk chain
targetBlocks := hashLimit + 2*maxQueueDist
hashes, blocks := makeChain(targetBlocks, 0, genesis)
- valid := tester.makeFetcher(blocks)
+ validBlockFetcher := tester.makeBlockFetcher(blocks)
+ validHeaderFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
+ validBodyFetcher := tester.makeBodyFetcher(blocks, 0)
attack, _ := makeChain(targetBlocks, 0, unknownBlock)
- attacker := tester.makeFetcher(nil)
+ attackerBlockFetcher := tester.makeBlockFetcher(nil)
+ attackerHeaderFetcher := tester.makeHeaderFetcher(nil, -gatherSlack)
+ attackerBodyFetcher := tester.makeBodyFetcher(nil, 0)
// Feed the tester a huge hashset from the attacker, and a limited from the valid peer
for i := 0; i < len(attack); i++ {
if i < maxQueueDist {
- tester.fetcher.Notify("valid", hashes[len(hashes)-2-i], 0, time.Now(), valid)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[len(hashes)-2-i], 0, time.Now(), validBlockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[len(hashes)-2-i], uint64(i+1), time.Now(), nil, validHeaderFetcher, validBodyFetcher)
+ }
+ }
+ if protocol < 62 {
+ tester.fetcher.Notify("attacker", attack[i], 0, time.Now(), attackerBlockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("attacker", attack[i], 1 /* don't distance drop */, time.Now(), nil, attackerHeaderFetcher, attackerBodyFetcher)
}
- tester.fetcher.Notify("attacker", attack[i], 0, time.Now(), attacker)
}
if len(tester.fetcher.announced) != hashLimit+maxQueueDist {
t.Fatalf("queued announce count mismatch: have %d, want %d", len(tester.fetcher.announced), hashLimit+maxQueueDist)
@@ -449,8 +790,12 @@ func TestHashMemoryExhaustionAttack(t *testing.T) {
// Feed the remaining valid hashes to ensure DOS protection state remains clean
for i := len(hashes) - maxQueueDist - 2; i >= 0; i-- {
- tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), valid)
- verifyImportEvent(t, imported)
+ if protocol < 62 {
+ tester.fetcher.Notify("valid", hashes[i], 0, time.Now().Add(-arriveTimeout), validBlockFetcher, nil, nil)
+ } else {
+ tester.fetcher.Notify("valid", hashes[i], uint64(len(hashes)-i-1), time.Now().Add(-arriveTimeout), nil, validHeaderFetcher, validBodyFetcher)
+ }
+ verifyImportEvent(t, imported, true)
}
verifyImportDone(t, imported)
}
@@ -498,7 +843,7 @@ func TestBlockMemoryExhaustionAttack(t *testing.T) {
// Insert the remaining blocks in chunks to ensure clean DOS protection
for i := maxQueueDist; i < len(hashes)-1; i++ {
tester.fetcher.Enqueue("valid", blocks[hashes[len(hashes)-2-i]])
- verifyImportEvent(t, imported)
+ verifyImportEvent(t, imported, true)
}
verifyImportDone(t, imported)
}
diff --git a/eth/handler.go b/eth/handler.go
index 25ff0eef0..e7404e36a 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -201,7 +201,9 @@ func (pm *ProtocolManager) handle(p *peer) error {
defer pm.removePeer(p.id)
// Register the peer in the downloader. If the downloader considers it banned, we disconnect
- if err := pm.downloader.RegisterPeer(p.id, p.version, p.Head(), p.RequestHashes, p.RequestHashesFromNumber, p.RequestBlocks); err != nil {
+ if err := pm.downloader.RegisterPeer(p.id, p.version, p.Head(),
+ p.RequestHashes, p.RequestHashesFromNumber, p.RequestBlocks,
+ p.RequestHeadersByHash, p.RequestHeadersByNumber, p.RequestBodies); err != nil {
return err
}
// Propagate existing transactions. new transactions appearing
@@ -287,7 +289,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
break
}
// Deliver them all to the downloader for queuing
- err := pm.downloader.DeliverHashes(p.id, hashes)
+ err := pm.downloader.DeliverHashes61(p.id, hashes)
if err != nil {
glog.V(logger.Debug).Infoln(err)
}
@@ -332,8 +334,8 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
block.ReceivedAt = msg.ReceivedAt
}
// Filter out any explicitly requested blocks, deliver the rest to the downloader
- if blocks := pm.fetcher.Filter(blocks); len(blocks) > 0 {
- pm.downloader.DeliverBlocks(p.id, blocks)
+ if blocks := pm.fetcher.FilterBlocks(blocks); len(blocks) > 0 {
+ pm.downloader.DeliverBlocks61(p.id, blocks)
}
// Block header query, collect the requested headers and reply
@@ -401,6 +403,46 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
}
return p.SendBlockHeaders(headers)
+ case p.version >= eth62 && msg.Code == BlockHeadersMsg:
+ // A batch of headers arrived to one of our previous requests
+ var headers []*types.Header
+ if err := msg.Decode(&headers); err != nil {
+ return errResp(ErrDecode, "msg %v: %v", msg, err)
+ }
+ // Filter out any explicitly requested headers, deliver the rest to the downloader
+ filter := len(headers) == 1
+ if filter {
+ headers = pm.fetcher.FilterHeaders(headers, time.Now())
+ }
+ if len(headers) > 0 || !filter {
+ err := pm.downloader.DeliverHeaders(p.id, headers)
+ if err != nil {
+ glog.V(logger.Debug).Infoln(err)
+ }
+ }
+
+ case p.version >= eth62 && msg.Code == BlockBodiesMsg:
+ // A batch of block bodies arrived to one of our previous requests
+ var request blockBodiesData
+ if err := msg.Decode(&request); err != nil {
+ return errResp(ErrDecode, "msg %v: %v", msg, err)
+ }
+ // Deliver them all to the downloader for queuing
+ trasactions := make([][]*types.Transaction, len(request))
+ uncles := make([][]*types.Header, len(request))
+
+ for i, body := range request {
+ trasactions[i] = body.Transactions
+ uncles[i] = body.Uncles
+ }
+ // Filter out any explicitly requested bodies, deliver the rest to the downloader
+ if trasactions, uncles := pm.fetcher.FilterBodies(trasactions, uncles, time.Now()); len(trasactions) > 0 || len(uncles) > 0 {
+ err := pm.downloader.DeliverBodies(p.id, trasactions, uncles)
+ if err != nil {
+ glog.V(logger.Debug).Infoln(err)
+ }
+ }
+
case p.version >= eth62 && msg.Code == GetBlockBodiesMsg:
// Decode the retrieval message
msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
@@ -522,7 +564,11 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
}
}
for _, block := range unknown {
- pm.fetcher.Notify(p.id, block.Hash, block.Number, time.Now(), p.RequestBlocks)
+ if p.version < eth62 {
+ pm.fetcher.Notify(p.id, block.Hash, block.Number, time.Now(), p.RequestBlocks, nil, nil)
+ } else {
+ pm.fetcher.Notify(p.id, block.Hash, block.Number, time.Now(), nil, p.RequestOneHeader, p.RequestBodies)
+ }
}
case msg.Code == NewBlockMsg:
@@ -612,7 +658,11 @@ func (pm *ProtocolManager) BroadcastBlock(block *types.Block, propagate bool) {
// Otherwise if the block is indeed in out own chain, announce it
if pm.chainman.HasBlock(hash) {
for _, peer := range peers {
- peer.SendNewBlockHashes([]common.Hash{hash})
+ if peer.version < eth62 {
+ peer.SendNewBlockHashes61([]common.Hash{hash})
+ } else {
+ peer.SendNewBlockHashes([]common.Hash{hash}, []uint64{block.NumberU64()})
+ }
}
glog.V(logger.Detail).Infof("announced block %x to %d peers in %v", hash[:4], len(peers), time.Since(block.ReceivedAt))
}
diff --git a/eth/peer.go b/eth/peer.go
index 78de8a9d3..8d7c48885 100644
--- a/eth/peer.go
+++ b/eth/peer.go
@@ -145,15 +145,29 @@ func (p *peer) SendBlocks(blocks []*types.Block) error {
return p2p.Send(p.rw, BlocksMsg, blocks)
}
-// SendNewBlockHashes announces the availability of a number of blocks through
+// SendNewBlockHashes61 announces the availability of a number of blocks through
// a hash notification.
-func (p *peer) SendNewBlockHashes(hashes []common.Hash) error {
+func (p *peer) SendNewBlockHashes61(hashes []common.Hash) error {
for _, hash := range hashes {
p.knownBlocks.Add(hash)
}
return p2p.Send(p.rw, NewBlockHashesMsg, hashes)
}
+// SendNewBlockHashes announces the availability of a number of blocks through
+// a hash notification.
+func (p *peer) SendNewBlockHashes(hashes []common.Hash, numbers []uint64) error {
+ for _, hash := range hashes {
+ p.knownBlocks.Add(hash)
+ }
+ request := make(newBlockHashesData, len(hashes))
+ for i := 0; i < len(hashes); i++ {
+ request[i].Hash = hashes[i]
+ request[i].Number = numbers[i]
+ }
+ return p2p.Send(p.rw, NewBlockHashesMsg, request)
+}
+
// SendNewBlock propagates an entire block to a remote peer.
func (p *peer) SendNewBlock(block *types.Block, td *big.Int) error {
p.knownBlocks.Add(block.Hash())
@@ -185,40 +199,61 @@ func (p *peer) SendReceipts(receipts []*types.Receipt) error {
// RequestHashes fetches a batch of hashes from a peer, starting at from, going
// towards the genesis block.
func (p *peer) RequestHashes(from common.Hash) error {
- glog.V(logger.Debug).Infof("%v fetching hashes (%d) from %x...\n", p, downloader.MaxHashFetch, from[:4])
+ glog.V(logger.Debug).Infof("%v fetching hashes (%d) from %x...", p, downloader.MaxHashFetch, from[:4])
return p2p.Send(p.rw, GetBlockHashesMsg, getBlockHashesData{from, uint64(downloader.MaxHashFetch)})
}
// RequestHashesFromNumber fetches a batch of hashes from a peer, starting at
// the requested block number, going upwards towards the genesis block.
func (p *peer) RequestHashesFromNumber(from uint64, count int) error {
- glog.V(logger.Debug).Infof("%v fetching hashes (%d) from #%d...\n", p, count, from)
+ glog.V(logger.Debug).Infof("%v fetching hashes (%d) from #%d...", p, count, from)
return p2p.Send(p.rw, GetBlockHashesFromNumberMsg, getBlockHashesFromNumberData{from, uint64(count)})
}
// RequestBlocks fetches a batch of blocks corresponding to the specified hashes.
func (p *peer) RequestBlocks(hashes []common.Hash) error {
- glog.V(logger.Debug).Infof("%v fetching %v blocks\n", p, len(hashes))
+ glog.V(logger.Debug).Infof("%v fetching %v blocks", p, len(hashes))
return p2p.Send(p.rw, GetBlocksMsg, hashes)
}
-// RequestHeaders fetches a batch of blocks' headers corresponding to the
-// specified hashes.
-func (p *peer) RequestHeaders(hashes []common.Hash) error {
- glog.V(logger.Debug).Infof("%v fetching %v headers\n", p, len(hashes))
- return p2p.Send(p.rw, GetBlockHeadersMsg, hashes)
+// RequestHeaders is a wrapper around the header query functions to fetch a
+// single header. It is used solely by the fetcher.
+func (p *peer) RequestOneHeader(hash common.Hash) error {
+ glog.V(logger.Debug).Infof("%v fetching a single header: %x", p, hash)
+ return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Hash: hash}, Amount: uint64(1), Skip: uint64(0), Reverse: false})
+}
+
+// RequestHeadersByHash fetches a batch of blocks' headers corresponding to the
+// specified header query, based on the hash of an origin block.
+func (p *peer) RequestHeadersByHash(origin common.Hash, amount int, skip int, reverse bool) error {
+ glog.V(logger.Debug).Infof("%v fetching %d headers from %x, skipping %d (reverse = %v)", p, amount, origin[:4], skip, reverse)
+ return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Hash: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse})
+}
+
+// RequestHeadersByNumber fetches a batch of blocks' headers corresponding to the
+// specified header query, based on the number of an origin block.
+func (p *peer) RequestHeadersByNumber(origin uint64, amount int, skip int, reverse bool) error {
+ glog.V(logger.Debug).Infof("%v fetching %d headers from #%d, skipping %d (reverse = %v)", p, amount, origin, skip, reverse)
+ return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse})
+}
+
+// RequestBodies fetches a batch of blocks' bodies corresponding to the hashes
+// specified.
+func (p *peer) RequestBodies(hashes []common.Hash) error {
+ glog.V(logger.Debug).Infof("%v fetching %d block bodies", p, len(hashes))
+ return p2p.Send(p.rw, GetBlockBodiesMsg, hashes)
}
// RequestNodeData fetches a batch of arbitrary data from a node's known state
// data, corresponding to the specified hashes.
func (p *peer) RequestNodeData(hashes []common.Hash) error {
- glog.V(logger.Debug).Infof("%v fetching %v state data\n", p, len(hashes))
+ glog.V(logger.Debug).Infof("%v fetching %v state data", p, len(hashes))
return p2p.Send(p.rw, GetNodeDataMsg, hashes)
}
// RequestReceipts fetches a batch of transaction receipts from a remote node.
func (p *peer) RequestReceipts(hashes []common.Hash) error {
- glog.V(logger.Debug).Infof("%v fetching %v receipts\n", p, len(hashes))
+ glog.V(logger.Debug).Infof("%v fetching %v receipts", p, len(hashes))
return p2p.Send(p.rw, GetReceiptsMsg, hashes)
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 23:22:02 +0800