1496 lines
57 KiB
Go
1496 lines
57 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package downloader
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
"os"
|
|
"strings"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/consensus/ethash"
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/core/rawdb"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/eth/protocols/eth"
|
|
"github.com/ethereum/go-ethereum/eth/protocols/snap"
|
|
"github.com/ethereum/go-ethereum/event"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
"github.com/ethereum/go-ethereum/trie"
|
|
)
|
|
|
|
// downloadTester is a test simulator for mocking out local block chain.
|
|
type downloadTester struct {
|
|
freezer string
|
|
chain *core.BlockChain
|
|
downloader *Downloader
|
|
|
|
peers map[string]*downloadTesterPeer
|
|
lock sync.RWMutex
|
|
}
|
|
|
|
// newTester creates a new downloader test mocker.
|
|
func newTester(t *testing.T) *downloadTester {
|
|
return newTesterWithNotification(t, nil)
|
|
}
|
|
|
|
// newTester creates a new downloader test mocker.
|
|
func newTesterWithNotification(t *testing.T, success func()) *downloadTester {
|
|
freezer := t.TempDir()
|
|
db, err := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), freezer, "", false)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
t.Cleanup(func() {
|
|
db.Close()
|
|
})
|
|
gspec := &core.Genesis{
|
|
Config: params.TestChainConfig,
|
|
Alloc: core.GenesisAlloc{testAddress: {Balance: big.NewInt(1000000000000000)}},
|
|
BaseFee: big.NewInt(params.InitialBaseFee),
|
|
}
|
|
chain, err := core.NewBlockChain(db, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
tester := &downloadTester{
|
|
freezer: freezer,
|
|
chain: chain,
|
|
peers: make(map[string]*downloadTesterPeer),
|
|
}
|
|
tester.downloader = New(0, db, new(event.TypeMux), tester.chain, nil, tester.dropPeer, success)
|
|
return tester
|
|
}
|
|
|
|
// terminate aborts any operations on the embedded downloader and releases all
|
|
// held resources.
|
|
func (dl *downloadTester) terminate() {
|
|
dl.downloader.Terminate()
|
|
dl.chain.Stop()
|
|
|
|
os.RemoveAll(dl.freezer)
|
|
}
|
|
|
|
// sync starts synchronizing with a remote peer, blocking until it completes.
|
|
func (dl *downloadTester) sync(id string, td *big.Int, mode SyncMode) error {
|
|
head := dl.peers[id].chain.CurrentBlock()
|
|
if td == nil {
|
|
// If no particular TD was requested, load from the peer's blockchain
|
|
td = dl.peers[id].chain.GetTd(head.Hash(), head.Number.Uint64())
|
|
}
|
|
// Synchronise with the chosen peer and ensure proper cleanup afterwards
|
|
err := dl.downloader.synchronise(id, head.Hash(), td, nil, mode, false, nil)
|
|
select {
|
|
case <-dl.downloader.cancelCh:
|
|
// Ok, downloader fully cancelled after sync cycle
|
|
default:
|
|
// Downloader is still accepting packets, can block a peer up
|
|
panic("downloader active post sync cycle") // panic will be caught by tester
|
|
}
|
|
return err
|
|
}
|
|
|
|
// newPeer registers a new block download source into the downloader.
|
|
func (dl *downloadTester) newPeer(id string, version uint, blocks []*types.Block) *downloadTesterPeer {
|
|
dl.lock.Lock()
|
|
defer dl.lock.Unlock()
|
|
|
|
peer := &downloadTesterPeer{
|
|
dl: dl,
|
|
id: id,
|
|
chain: newTestBlockchain(blocks),
|
|
withholdHeaders: make(map[common.Hash]struct{}),
|
|
}
|
|
dl.peers[id] = peer
|
|
|
|
if err := dl.downloader.RegisterPeer(id, version, peer); err != nil {
|
|
panic(err)
|
|
}
|
|
if err := dl.downloader.SnapSyncer.Register(peer); err != nil {
|
|
panic(err)
|
|
}
|
|
return peer
|
|
}
|
|
|
|
// dropPeer simulates a hard peer removal from the connection pool.
|
|
func (dl *downloadTester) dropPeer(id string) {
|
|
dl.lock.Lock()
|
|
defer dl.lock.Unlock()
|
|
|
|
delete(dl.peers, id)
|
|
dl.downloader.SnapSyncer.Unregister(id)
|
|
dl.downloader.UnregisterPeer(id)
|
|
}
|
|
|
|
type downloadTesterPeer struct {
|
|
dl *downloadTester
|
|
id string
|
|
chain *core.BlockChain
|
|
|
|
withholdHeaders map[common.Hash]struct{}
|
|
}
|
|
|
|
// Head constructs a function to retrieve a peer's current head hash
|
|
// and total difficulty.
|
|
func (dlp *downloadTesterPeer) Head() (common.Hash, *big.Int) {
|
|
head := dlp.chain.CurrentBlock()
|
|
return head.Hash(), dlp.chain.GetTd(head.Hash(), head.Number.Uint64())
|
|
}
|
|
|
|
func unmarshalRlpHeaders(rlpdata []rlp.RawValue) []*types.Header {
|
|
var headers = make([]*types.Header, len(rlpdata))
|
|
for i, data := range rlpdata {
|
|
var h types.Header
|
|
if err := rlp.DecodeBytes(data, &h); err != nil {
|
|
panic(err)
|
|
}
|
|
headers[i] = &h
|
|
}
|
|
return headers
|
|
}
|
|
|
|
// RequestHeadersByHash constructs a GetBlockHeaders function based on a hashed
|
|
// 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 (dlp *downloadTesterPeer) RequestHeadersByHash(origin common.Hash, amount int, skip int, reverse bool, sink chan *eth.Response) (*eth.Request, error) {
|
|
// Service the header query via the live handler code
|
|
rlpHeaders := eth.ServiceGetBlockHeadersQuery(dlp.chain, ð.GetBlockHeadersPacket{
|
|
Origin: eth.HashOrNumber{
|
|
Hash: origin,
|
|
},
|
|
Amount: uint64(amount),
|
|
Skip: uint64(skip),
|
|
Reverse: reverse,
|
|
}, nil)
|
|
headers := unmarshalRlpHeaders(rlpHeaders)
|
|
// If a malicious peer is simulated withholding headers, delete them
|
|
for hash := range dlp.withholdHeaders {
|
|
for i, header := range headers {
|
|
if header.Hash() == hash {
|
|
headers = append(headers[:i], headers[i+1:]...)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
hashes := make([]common.Hash, len(headers))
|
|
for i, header := range headers {
|
|
hashes[i] = header.Hash()
|
|
}
|
|
// Deliver the headers to the downloader
|
|
req := ð.Request{
|
|
Peer: dlp.id,
|
|
}
|
|
res := ð.Response{
|
|
Req: req,
|
|
Res: (*eth.BlockHeadersPacket)(&headers),
|
|
Meta: hashes,
|
|
Time: 1,
|
|
Done: make(chan error, 1), // Ignore the returned status
|
|
}
|
|
go func() {
|
|
sink <- res
|
|
}()
|
|
return req, nil
|
|
}
|
|
|
|
// RequestHeadersByNumber 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 (dlp *downloadTesterPeer) RequestHeadersByNumber(origin uint64, amount int, skip int, reverse bool, sink chan *eth.Response) (*eth.Request, error) {
|
|
// Service the header query via the live handler code
|
|
rlpHeaders := eth.ServiceGetBlockHeadersQuery(dlp.chain, ð.GetBlockHeadersPacket{
|
|
Origin: eth.HashOrNumber{
|
|
Number: origin,
|
|
},
|
|
Amount: uint64(amount),
|
|
Skip: uint64(skip),
|
|
Reverse: reverse,
|
|
}, nil)
|
|
headers := unmarshalRlpHeaders(rlpHeaders)
|
|
// If a malicious peer is simulated withholding headers, delete them
|
|
for hash := range dlp.withholdHeaders {
|
|
for i, header := range headers {
|
|
if header.Hash() == hash {
|
|
headers = append(headers[:i], headers[i+1:]...)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
hashes := make([]common.Hash, len(headers))
|
|
for i, header := range headers {
|
|
hashes[i] = header.Hash()
|
|
}
|
|
// Deliver the headers to the downloader
|
|
req := ð.Request{
|
|
Peer: dlp.id,
|
|
}
|
|
res := ð.Response{
|
|
Req: req,
|
|
Res: (*eth.BlockHeadersPacket)(&headers),
|
|
Meta: hashes,
|
|
Time: 1,
|
|
Done: make(chan error, 1), // Ignore the returned status
|
|
}
|
|
go func() {
|
|
sink <- res
|
|
}()
|
|
return req, nil
|
|
}
|
|
|
|
// RequestBodies 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 (dlp *downloadTesterPeer) RequestBodies(hashes []common.Hash, sink chan *eth.Response) (*eth.Request, error) {
|
|
blobs := eth.ServiceGetBlockBodiesQuery(dlp.chain, hashes)
|
|
|
|
bodies := make([]*eth.BlockBody, len(blobs))
|
|
for i, blob := range blobs {
|
|
bodies[i] = new(eth.BlockBody)
|
|
rlp.DecodeBytes(blob, bodies[i])
|
|
}
|
|
var (
|
|
txsHashes = make([]common.Hash, len(bodies))
|
|
uncleHashes = make([]common.Hash, len(bodies))
|
|
withdrawalHashes = make([]common.Hash, len(bodies))
|
|
)
|
|
hasher := trie.NewStackTrie(nil)
|
|
for i, body := range bodies {
|
|
txsHashes[i] = types.DeriveSha(types.Transactions(body.Transactions), hasher)
|
|
uncleHashes[i] = types.CalcUncleHash(body.Uncles)
|
|
}
|
|
req := ð.Request{
|
|
Peer: dlp.id,
|
|
}
|
|
res := ð.Response{
|
|
Req: req,
|
|
Res: (*eth.BlockBodiesPacket)(&bodies),
|
|
Meta: [][]common.Hash{txsHashes, uncleHashes, withdrawalHashes},
|
|
Time: 1,
|
|
Done: make(chan error, 1), // Ignore the returned status
|
|
}
|
|
go func() {
|
|
sink <- res
|
|
}()
|
|
return req, nil
|
|
}
|
|
|
|
// RequestReceipts constructs a getReceipts method associated with a particular
|
|
// peer in the download tester. The returned function can be used to retrieve
|
|
// batches of block receipts from the particularly requested peer.
|
|
func (dlp *downloadTesterPeer) RequestReceipts(hashes []common.Hash, sink chan *eth.Response) (*eth.Request, error) {
|
|
blobs := eth.ServiceGetReceiptsQuery(dlp.chain, hashes)
|
|
|
|
receipts := make([][]*types.Receipt, len(blobs))
|
|
for i, blob := range blobs {
|
|
rlp.DecodeBytes(blob, &receipts[i])
|
|
}
|
|
hasher := trie.NewStackTrie(nil)
|
|
hashes = make([]common.Hash, len(receipts))
|
|
for i, receipt := range receipts {
|
|
hashes[i] = types.DeriveSha(types.Receipts(receipt), hasher)
|
|
}
|
|
req := ð.Request{
|
|
Peer: dlp.id,
|
|
}
|
|
res := ð.Response{
|
|
Req: req,
|
|
Res: (*eth.ReceiptsPacket)(&receipts),
|
|
Meta: hashes,
|
|
Time: 1,
|
|
Done: make(chan error, 1), // Ignore the returned status
|
|
}
|
|
go func() {
|
|
sink <- res
|
|
}()
|
|
return req, nil
|
|
}
|
|
|
|
// ID retrieves the peer's unique identifier.
|
|
func (dlp *downloadTesterPeer) ID() string {
|
|
return dlp.id
|
|
}
|
|
|
|
// RequestAccountRange fetches a batch of accounts rooted in a specific account
|
|
// trie, starting with the origin.
|
|
func (dlp *downloadTesterPeer) RequestAccountRange(id uint64, root, origin, limit common.Hash, bytes uint64) error {
|
|
// Create the request and service it
|
|
req := &snap.GetAccountRangePacket{
|
|
ID: id,
|
|
Root: root,
|
|
Origin: origin,
|
|
Limit: limit,
|
|
Bytes: bytes,
|
|
}
|
|
slimaccs, proofs := snap.ServiceGetAccountRangeQuery(dlp.chain, req)
|
|
|
|
// We need to convert to non-slim format, delegate to the packet code
|
|
res := &snap.AccountRangePacket{
|
|
ID: id,
|
|
Accounts: slimaccs,
|
|
Proof: proofs,
|
|
}
|
|
hashes, accounts, _ := res.Unpack()
|
|
|
|
go dlp.dl.downloader.SnapSyncer.OnAccounts(dlp, id, hashes, accounts, proofs)
|
|
return nil
|
|
}
|
|
|
|
// RequestStorageRanges fetches a batch of storage slots belonging to one or
|
|
// more accounts. If slots from only one account is requested, an origin marker
|
|
// may also be used to retrieve from there.
|
|
func (dlp *downloadTesterPeer) RequestStorageRanges(id uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, bytes uint64) error {
|
|
// Create the request and service it
|
|
req := &snap.GetStorageRangesPacket{
|
|
ID: id,
|
|
Accounts: accounts,
|
|
Root: root,
|
|
Origin: origin,
|
|
Limit: limit,
|
|
Bytes: bytes,
|
|
}
|
|
storage, proofs := snap.ServiceGetStorageRangesQuery(dlp.chain, req)
|
|
|
|
// We need to convert to demultiplex, delegate to the packet code
|
|
res := &snap.StorageRangesPacket{
|
|
ID: id,
|
|
Slots: storage,
|
|
Proof: proofs,
|
|
}
|
|
hashes, slots := res.Unpack()
|
|
|
|
go dlp.dl.downloader.SnapSyncer.OnStorage(dlp, id, hashes, slots, proofs)
|
|
return nil
|
|
}
|
|
|
|
// RequestByteCodes fetches a batch of bytecodes by hash.
|
|
func (dlp *downloadTesterPeer) RequestByteCodes(id uint64, hashes []common.Hash, bytes uint64) error {
|
|
req := &snap.GetByteCodesPacket{
|
|
ID: id,
|
|
Hashes: hashes,
|
|
Bytes: bytes,
|
|
}
|
|
codes := snap.ServiceGetByteCodesQuery(dlp.chain, req)
|
|
go dlp.dl.downloader.SnapSyncer.OnByteCodes(dlp, id, codes)
|
|
return nil
|
|
}
|
|
|
|
// RequestTrieNodes fetches a batch of account or storage trie nodes rooted in
|
|
// a specific state trie.
|
|
func (dlp *downloadTesterPeer) RequestTrieNodes(id uint64, root common.Hash, paths []snap.TrieNodePathSet, bytes uint64) error {
|
|
req := &snap.GetTrieNodesPacket{
|
|
ID: id,
|
|
Root: root,
|
|
Paths: paths,
|
|
Bytes: bytes,
|
|
}
|
|
nodes, _ := snap.ServiceGetTrieNodesQuery(dlp.chain, req, time.Now())
|
|
go dlp.dl.downloader.SnapSyncer.OnTrieNodes(dlp, id, nodes)
|
|
return nil
|
|
}
|
|
|
|
// Log retrieves the peer's own contextual logger.
|
|
func (dlp *downloadTesterPeer) Log() log.Logger {
|
|
return log.New("peer", dlp.id)
|
|
}
|
|
|
|
// assertOwnChain checks if the local chain contains the correct number of items
|
|
// of the various chain components.
|
|
func assertOwnChain(t *testing.T, tester *downloadTester, length int) {
|
|
// Mark this method as a helper to report errors at callsite, not in here
|
|
t.Helper()
|
|
|
|
headers, blocks, receipts := length, length, length
|
|
if tester.downloader.getMode() == LightSync {
|
|
blocks, receipts = 1, 1
|
|
}
|
|
if hs := int(tester.chain.CurrentHeader().Number.Uint64()) + 1; hs != headers {
|
|
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, headers)
|
|
}
|
|
if bs := int(tester.chain.CurrentBlock().Number.Uint64()) + 1; bs != blocks {
|
|
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, blocks)
|
|
}
|
|
if rs := int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1; rs != receipts {
|
|
t.Fatalf("synchronised receipts mismatch: have %v, want %v", rs, receipts)
|
|
}
|
|
}
|
|
|
|
func TestCanonicalSynchronisation66Full(t *testing.T) { testCanonSync(t, eth.ETH66, FullSync) }
|
|
func TestCanonicalSynchronisation66Snap(t *testing.T) { testCanonSync(t, eth.ETH66, SnapSync) }
|
|
func TestCanonicalSynchronisation66Light(t *testing.T) { testCanonSync(t, eth.ETH66, LightSync) }
|
|
func TestCanonicalSynchronisation67Full(t *testing.T) { testCanonSync(t, eth.ETH67, FullSync) }
|
|
func TestCanonicalSynchronisation67Snap(t *testing.T) { testCanonSync(t, eth.ETH67, SnapSync) }
|
|
func TestCanonicalSynchronisation67Light(t *testing.T) { testCanonSync(t, eth.ETH67, LightSync) }
|
|
|
|
func testCanonSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create a small enough block chain to download
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
tester.newPeer("peer", protocol, chain.blocks[1:])
|
|
|
|
// Synchronise with the peer and make sure all relevant data was retrieved
|
|
if err := tester.sync("peer", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
}
|
|
|
|
// Tests that if a large batch of blocks are being downloaded, it is throttled
|
|
// until the cached blocks are retrieved.
|
|
func TestThrottling66Full(t *testing.T) { testThrottling(t, eth.ETH66, FullSync) }
|
|
func TestThrottling66Snap(t *testing.T) { testThrottling(t, eth.ETH66, SnapSync) }
|
|
func TestThrottling67Full(t *testing.T) { testThrottling(t, eth.ETH67, FullSync) }
|
|
func TestThrottling67Snap(t *testing.T) { testThrottling(t, eth.ETH67, SnapSync) }
|
|
|
|
func testThrottling(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create a long block chain to download and the tester
|
|
targetBlocks := len(testChainBase.blocks) - 1
|
|
tester.newPeer("peer", protocol, testChainBase.blocks[1:])
|
|
|
|
// Wrap the importer to allow stepping
|
|
blocked, proceed := uint32(0), make(chan struct{})
|
|
tester.downloader.chainInsertHook = func(results []*fetchResult) {
|
|
atomic.StoreUint32(&blocked, uint32(len(results)))
|
|
<-proceed
|
|
}
|
|
// Start a synchronisation concurrently
|
|
errc := make(chan error, 1)
|
|
go func() {
|
|
errc <- tester.sync("peer", nil, mode)
|
|
}()
|
|
// Iteratively take some blocks, always checking the retrieval count
|
|
for {
|
|
// Check the retrieval count synchronously (! reason for this ugly block)
|
|
tester.lock.RLock()
|
|
retrieved := int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1
|
|
tester.lock.RUnlock()
|
|
if retrieved >= targetBlocks+1 {
|
|
break
|
|
}
|
|
// Wait a bit for sync to throttle itself
|
|
var cached, frozen int
|
|
for start := time.Now(); time.Since(start) < 3*time.Second; {
|
|
time.Sleep(25 * time.Millisecond)
|
|
|
|
tester.lock.Lock()
|
|
tester.downloader.queue.lock.Lock()
|
|
tester.downloader.queue.resultCache.lock.Lock()
|
|
{
|
|
cached = tester.downloader.queue.resultCache.countCompleted()
|
|
frozen = int(atomic.LoadUint32(&blocked))
|
|
retrieved = int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1
|
|
}
|
|
tester.downloader.queue.resultCache.lock.Unlock()
|
|
tester.downloader.queue.lock.Unlock()
|
|
tester.lock.Unlock()
|
|
|
|
if cached == blockCacheMaxItems ||
|
|
cached == blockCacheMaxItems-reorgProtHeaderDelay ||
|
|
retrieved+cached+frozen == targetBlocks+1 ||
|
|
retrieved+cached+frozen == targetBlocks+1-reorgProtHeaderDelay {
|
|
break
|
|
}
|
|
}
|
|
// Make sure we filled up the cache, then exhaust it
|
|
time.Sleep(25 * time.Millisecond) // give it a chance to screw up
|
|
tester.lock.RLock()
|
|
retrieved = int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1
|
|
tester.lock.RUnlock()
|
|
if cached != blockCacheMaxItems && cached != blockCacheMaxItems-reorgProtHeaderDelay && retrieved+cached+frozen != targetBlocks+1 && retrieved+cached+frozen != targetBlocks+1-reorgProtHeaderDelay {
|
|
t.Fatalf("block count mismatch: have %v, want %v (owned %v, blocked %v, target %v)", cached, blockCacheMaxItems, retrieved, frozen, targetBlocks+1)
|
|
}
|
|
// Permit the blocked blocks to import
|
|
if atomic.LoadUint32(&blocked) > 0 {
|
|
atomic.StoreUint32(&blocked, uint32(0))
|
|
proceed <- struct{}{}
|
|
}
|
|
}
|
|
// Check that we haven't pulled more blocks than available
|
|
assertOwnChain(t, tester, targetBlocks+1)
|
|
if err := <-errc; err != nil {
|
|
t.Fatalf("block synchronization failed: %v", err)
|
|
}
|
|
}
|
|
|
|
// 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 TestForkedSync66Full(t *testing.T) { testForkedSync(t, eth.ETH66, FullSync) }
|
|
func TestForkedSync66Snap(t *testing.T) { testForkedSync(t, eth.ETH66, SnapSync) }
|
|
func TestForkedSync66Light(t *testing.T) { testForkedSync(t, eth.ETH66, LightSync) }
|
|
func TestForkedSync67Full(t *testing.T) { testForkedSync(t, eth.ETH67, FullSync) }
|
|
func TestForkedSync67Snap(t *testing.T) { testForkedSync(t, eth.ETH67, SnapSync) }
|
|
func TestForkedSync67Light(t *testing.T) { testForkedSync(t, eth.ETH67, LightSync) }
|
|
|
|
func testForkedSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA.shorten(len(testChainBase.blocks) + 80)
|
|
chainB := testChainForkLightB.shorten(len(testChainBase.blocks) + 81)
|
|
tester.newPeer("fork A", protocol, chainA.blocks[1:])
|
|
tester.newPeer("fork B", protocol, chainB.blocks[1:])
|
|
// Synchronise with the peer and make sure all blocks were retrieved
|
|
if err := tester.sync("fork A", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chainA.blocks))
|
|
|
|
// Synchronise with the second peer and make sure that fork is pulled too
|
|
if err := tester.sync("fork B", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chainB.blocks))
|
|
}
|
|
|
|
// Tests that synchronising against a much shorter but much heavier fork works
|
|
// currently and is not dropped.
|
|
func TestHeavyForkedSync66Full(t *testing.T) { testHeavyForkedSync(t, eth.ETH66, FullSync) }
|
|
func TestHeavyForkedSync66Snap(t *testing.T) { testHeavyForkedSync(t, eth.ETH66, SnapSync) }
|
|
func TestHeavyForkedSync66Light(t *testing.T) { testHeavyForkedSync(t, eth.ETH66, LightSync) }
|
|
func TestHeavyForkedSync67Full(t *testing.T) { testHeavyForkedSync(t, eth.ETH67, FullSync) }
|
|
func TestHeavyForkedSync67Snap(t *testing.T) { testHeavyForkedSync(t, eth.ETH67, SnapSync) }
|
|
func TestHeavyForkedSync67Light(t *testing.T) { testHeavyForkedSync(t, eth.ETH67, LightSync) }
|
|
|
|
func testHeavyForkedSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA.shorten(len(testChainBase.blocks) + 80)
|
|
chainB := testChainForkHeavy.shorten(len(testChainBase.blocks) + 79)
|
|
tester.newPeer("light", protocol, chainA.blocks[1:])
|
|
tester.newPeer("heavy", protocol, chainB.blocks[1:])
|
|
|
|
// Synchronise with the peer and make sure all blocks were retrieved
|
|
if err := tester.sync("light", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chainA.blocks))
|
|
|
|
// Synchronise with the second peer and make sure that fork is pulled too
|
|
if err := tester.sync("heavy", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chainB.blocks))
|
|
}
|
|
|
|
// Tests that chain forks are contained within a certain interval of the current
|
|
// chain head, ensuring that malicious peers cannot waste resources by feeding
|
|
// long dead chains.
|
|
func TestBoundedForkedSync66Full(t *testing.T) { testBoundedForkedSync(t, eth.ETH66, FullSync) }
|
|
func TestBoundedForkedSync66Snap(t *testing.T) { testBoundedForkedSync(t, eth.ETH66, SnapSync) }
|
|
func TestBoundedForkedSync66Light(t *testing.T) { testBoundedForkedSync(t, eth.ETH66, LightSync) }
|
|
func TestBoundedForkedSync67Full(t *testing.T) { testBoundedForkedSync(t, eth.ETH67, FullSync) }
|
|
func TestBoundedForkedSync67Snap(t *testing.T) { testBoundedForkedSync(t, eth.ETH67, SnapSync) }
|
|
func TestBoundedForkedSync67Light(t *testing.T) { testBoundedForkedSync(t, eth.ETH67, LightSync) }
|
|
|
|
func testBoundedForkedSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA
|
|
chainB := testChainForkLightB
|
|
tester.newPeer("original", protocol, chainA.blocks[1:])
|
|
tester.newPeer("rewriter", protocol, chainB.blocks[1:])
|
|
|
|
// Synchronise with the peer and make sure all blocks were retrieved
|
|
if err := tester.sync("original", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chainA.blocks))
|
|
|
|
// Synchronise with the second peer and ensure that the fork is rejected to being too old
|
|
if err := tester.sync("rewriter", nil, mode); err != errInvalidAncestor {
|
|
t.Fatalf("sync failure mismatch: have %v, want %v", err, errInvalidAncestor)
|
|
}
|
|
}
|
|
|
|
// Tests that chain forks are contained within a certain interval of the current
|
|
// chain head for short but heavy forks too. These are a bit special because they
|
|
// take different ancestor lookup paths.
|
|
func TestBoundedHeavyForkedSync66Full(t *testing.T) {
|
|
testBoundedHeavyForkedSync(t, eth.ETH66, FullSync)
|
|
}
|
|
func TestBoundedHeavyForkedSync66Snap(t *testing.T) {
|
|
testBoundedHeavyForkedSync(t, eth.ETH66, SnapSync)
|
|
}
|
|
func TestBoundedHeavyForkedSync66Light(t *testing.T) {
|
|
testBoundedHeavyForkedSync(t, eth.ETH66, LightSync)
|
|
}
|
|
func TestBoundedHeavyForkedSync67Full(t *testing.T) {
|
|
testBoundedHeavyForkedSync(t, eth.ETH67, FullSync)
|
|
}
|
|
func TestBoundedHeavyForkedSync67Snap(t *testing.T) {
|
|
testBoundedHeavyForkedSync(t, eth.ETH67, SnapSync)
|
|
}
|
|
func TestBoundedHeavyForkedSync67Light(t *testing.T) {
|
|
testBoundedHeavyForkedSync(t, eth.ETH67, LightSync)
|
|
}
|
|
|
|
func testBoundedHeavyForkedSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create a long enough forked chain
|
|
chainA := testChainForkLightA
|
|
chainB := testChainForkHeavy
|
|
tester.newPeer("original", protocol, chainA.blocks[1:])
|
|
|
|
// Synchronise with the peer and make sure all blocks were retrieved
|
|
if err := tester.sync("original", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chainA.blocks))
|
|
|
|
tester.newPeer("heavy-rewriter", protocol, chainB.blocks[1:])
|
|
// Synchronise with the second peer and ensure that the fork is rejected to being too old
|
|
if err := tester.sync("heavy-rewriter", nil, mode); err != errInvalidAncestor {
|
|
t.Fatalf("sync failure mismatch: have %v, want %v", err, errInvalidAncestor)
|
|
}
|
|
}
|
|
|
|
// Tests that a canceled download wipes all previously accumulated state.
|
|
func TestCancel66Full(t *testing.T) { testCancel(t, eth.ETH66, FullSync) }
|
|
func TestCancel66Snap(t *testing.T) { testCancel(t, eth.ETH66, SnapSync) }
|
|
func TestCancel66Light(t *testing.T) { testCancel(t, eth.ETH66, LightSync) }
|
|
func TestCancel67Full(t *testing.T) { testCancel(t, eth.ETH67, FullSync) }
|
|
func TestCancel67Snap(t *testing.T) { testCancel(t, eth.ETH67, SnapSync) }
|
|
func TestCancel67Light(t *testing.T) { testCancel(t, eth.ETH67, LightSync) }
|
|
|
|
func testCancel(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(MaxHeaderFetch)
|
|
tester.newPeer("peer", protocol, chain.blocks[1:])
|
|
|
|
// Make sure canceling works with a pristine downloader
|
|
tester.downloader.Cancel()
|
|
if !tester.downloader.queue.Idle() {
|
|
t.Errorf("download queue not idle")
|
|
}
|
|
// Synchronise with the peer, but cancel afterwards
|
|
if err := tester.sync("peer", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
tester.downloader.Cancel()
|
|
if !tester.downloader.queue.Idle() {
|
|
t.Errorf("download queue not idle")
|
|
}
|
|
}
|
|
|
|
// Tests that synchronisation from multiple peers works as intended (multi thread sanity test).
|
|
func TestMultiSynchronisation66Full(t *testing.T) { testMultiSynchronisation(t, eth.ETH66, FullSync) }
|
|
func TestMultiSynchronisation66Snap(t *testing.T) { testMultiSynchronisation(t, eth.ETH66, SnapSync) }
|
|
func TestMultiSynchronisation66Light(t *testing.T) { testMultiSynchronisation(t, eth.ETH66, LightSync) }
|
|
func TestMultiSynchronisation67Full(t *testing.T) { testMultiSynchronisation(t, eth.ETH67, FullSync) }
|
|
func TestMultiSynchronisation67Snap(t *testing.T) { testMultiSynchronisation(t, eth.ETH67, SnapSync) }
|
|
func TestMultiSynchronisation67Light(t *testing.T) { testMultiSynchronisation(t, eth.ETH67, LightSync) }
|
|
|
|
func testMultiSynchronisation(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create various peers with various parts of the chain
|
|
targetPeers := 8
|
|
chain := testChainBase.shorten(targetPeers * 100)
|
|
|
|
for i := 0; i < targetPeers; i++ {
|
|
id := fmt.Sprintf("peer #%d", i)
|
|
tester.newPeer(id, protocol, chain.shorten(len(chain.blocks) / (i + 1)).blocks[1:])
|
|
}
|
|
if err := tester.sync("peer #0", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
}
|
|
|
|
// Tests that synchronisations behave well in multi-version protocol environments
|
|
// and not wreak havoc on other nodes in the network.
|
|
func TestMultiProtoSynchronisation66Full(t *testing.T) { testMultiProtoSync(t, eth.ETH66, FullSync) }
|
|
func TestMultiProtoSynchronisation66Snap(t *testing.T) { testMultiProtoSync(t, eth.ETH66, SnapSync) }
|
|
func TestMultiProtoSynchronisation66Light(t *testing.T) { testMultiProtoSync(t, eth.ETH66, LightSync) }
|
|
func TestMultiProtoSynchronisation67Full(t *testing.T) { testMultiProtoSync(t, eth.ETH67, FullSync) }
|
|
func TestMultiProtoSynchronisation67Snap(t *testing.T) { testMultiProtoSync(t, eth.ETH67, SnapSync) }
|
|
func TestMultiProtoSynchronisation67Light(t *testing.T) { testMultiProtoSync(t, eth.ETH67, LightSync) }
|
|
|
|
func testMultiProtoSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create a small enough block chain to download
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
|
|
// Create peers of every type
|
|
tester.newPeer("peer 66", eth.ETH66, chain.blocks[1:])
|
|
tester.newPeer("peer 67", eth.ETH67, chain.blocks[1:])
|
|
|
|
// Synchronise with the requested peer and make sure all blocks were retrieved
|
|
if err := tester.sync(fmt.Sprintf("peer %d", protocol), nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
|
|
// Check that no peers have been dropped off
|
|
for _, version := range []int{66, 67} {
|
|
peer := fmt.Sprintf("peer %d", version)
|
|
if _, ok := tester.peers[peer]; !ok {
|
|
t.Errorf("%s dropped", peer)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tests that if a block is empty (e.g. header only), no body request should be
|
|
// made, and instead the header should be assembled into a whole block in itself.
|
|
func TestEmptyShortCircuit66Full(t *testing.T) { testEmptyShortCircuit(t, eth.ETH66, FullSync) }
|
|
func TestEmptyShortCircuit66Snap(t *testing.T) { testEmptyShortCircuit(t, eth.ETH66, SnapSync) }
|
|
func TestEmptyShortCircuit66Light(t *testing.T) { testEmptyShortCircuit(t, eth.ETH66, LightSync) }
|
|
func TestEmptyShortCircuit67Full(t *testing.T) { testEmptyShortCircuit(t, eth.ETH67, FullSync) }
|
|
func TestEmptyShortCircuit67Snap(t *testing.T) { testEmptyShortCircuit(t, eth.ETH67, SnapSync) }
|
|
func TestEmptyShortCircuit67Light(t *testing.T) { testEmptyShortCircuit(t, eth.ETH67, LightSync) }
|
|
|
|
func testEmptyShortCircuit(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create a block chain to download
|
|
chain := testChainBase
|
|
tester.newPeer("peer", protocol, chain.blocks[1:])
|
|
|
|
// Instrument the downloader to signal body requests
|
|
bodiesHave, receiptsHave := int32(0), int32(0)
|
|
tester.downloader.bodyFetchHook = func(headers []*types.Header) {
|
|
atomic.AddInt32(&bodiesHave, int32(len(headers)))
|
|
}
|
|
tester.downloader.receiptFetchHook = func(headers []*types.Header) {
|
|
atomic.AddInt32(&receiptsHave, int32(len(headers)))
|
|
}
|
|
// Synchronise with the peer and make sure all blocks were retrieved
|
|
if err := tester.sync("peer", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
|
|
// Validate the number of block bodies that should have been requested
|
|
bodiesNeeded, receiptsNeeded := 0, 0
|
|
for _, block := range chain.blocks[1:] {
|
|
if mode != LightSync && (len(block.Transactions()) > 0 || len(block.Uncles()) > 0) {
|
|
bodiesNeeded++
|
|
}
|
|
}
|
|
for _, block := range chain.blocks[1:] {
|
|
if mode == SnapSync && len(block.Transactions()) > 0 {
|
|
receiptsNeeded++
|
|
}
|
|
}
|
|
if int(bodiesHave) != bodiesNeeded {
|
|
t.Errorf("body retrieval count mismatch: have %v, want %v", bodiesHave, bodiesNeeded)
|
|
}
|
|
if int(receiptsHave) != receiptsNeeded {
|
|
t.Errorf("receipt retrieval count mismatch: have %v, want %v", receiptsHave, receiptsNeeded)
|
|
}
|
|
}
|
|
|
|
// Tests that headers are enqueued continuously, preventing malicious nodes from
|
|
// stalling the downloader by feeding gapped header chains.
|
|
func TestMissingHeaderAttack66Full(t *testing.T) { testMissingHeaderAttack(t, eth.ETH66, FullSync) }
|
|
func TestMissingHeaderAttack66Snap(t *testing.T) { testMissingHeaderAttack(t, eth.ETH66, SnapSync) }
|
|
func TestMissingHeaderAttack66Light(t *testing.T) { testMissingHeaderAttack(t, eth.ETH66, LightSync) }
|
|
func TestMissingHeaderAttack67Full(t *testing.T) { testMissingHeaderAttack(t, eth.ETH67, FullSync) }
|
|
func TestMissingHeaderAttack67Snap(t *testing.T) { testMissingHeaderAttack(t, eth.ETH67, SnapSync) }
|
|
func TestMissingHeaderAttack67Light(t *testing.T) { testMissingHeaderAttack(t, eth.ETH67, LightSync) }
|
|
|
|
func testMissingHeaderAttack(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
|
|
attacker := tester.newPeer("attack", protocol, chain.blocks[1:])
|
|
attacker.withholdHeaders[chain.blocks[len(chain.blocks)/2-1].Hash()] = struct{}{}
|
|
|
|
if err := tester.sync("attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded attacker synchronisation")
|
|
}
|
|
// Synchronise with the valid peer and make sure sync succeeds
|
|
tester.newPeer("valid", protocol, chain.blocks[1:])
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
}
|
|
|
|
// Tests that if requested headers are shifted (i.e. first is missing), the queue
|
|
// detects the invalid numbering.
|
|
func TestShiftedHeaderAttack66Full(t *testing.T) { testShiftedHeaderAttack(t, eth.ETH66, FullSync) }
|
|
func TestShiftedHeaderAttack66Snap(t *testing.T) { testShiftedHeaderAttack(t, eth.ETH66, SnapSync) }
|
|
func TestShiftedHeaderAttack66Light(t *testing.T) { testShiftedHeaderAttack(t, eth.ETH66, LightSync) }
|
|
func TestShiftedHeaderAttack67Full(t *testing.T) { testShiftedHeaderAttack(t, eth.ETH67, FullSync) }
|
|
func TestShiftedHeaderAttack67Snap(t *testing.T) { testShiftedHeaderAttack(t, eth.ETH67, SnapSync) }
|
|
func TestShiftedHeaderAttack67Light(t *testing.T) { testShiftedHeaderAttack(t, eth.ETH67, LightSync) }
|
|
|
|
func testShiftedHeaderAttack(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
|
|
// Attempt a full sync with an attacker feeding shifted headers
|
|
attacker := tester.newPeer("attack", protocol, chain.blocks[1:])
|
|
attacker.withholdHeaders[chain.blocks[1].Hash()] = struct{}{}
|
|
|
|
if err := tester.sync("attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded attacker synchronisation")
|
|
}
|
|
// Synchronise with the valid peer and make sure sync succeeds
|
|
tester.newPeer("valid", protocol, chain.blocks[1:])
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
}
|
|
|
|
// Tests that upon detecting an invalid header, the recent ones are rolled back
|
|
// for various failure scenarios. Afterwards a full sync is attempted to make
|
|
// sure no state was corrupted.
|
|
func TestInvalidHeaderRollback66Snap(t *testing.T) { testInvalidHeaderRollback(t, eth.ETH66, SnapSync) }
|
|
func TestInvalidHeaderRollback67Snap(t *testing.T) { testInvalidHeaderRollback(t, eth.ETH67, SnapSync) }
|
|
|
|
func testInvalidHeaderRollback(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
// Create a small enough block chain to download
|
|
targetBlocks := 3*fsHeaderSafetyNet + 256 + fsMinFullBlocks
|
|
chain := testChainBase.shorten(targetBlocks)
|
|
|
|
// Attempt to sync with an attacker that feeds junk during the fast sync phase.
|
|
// This should result in the last fsHeaderSafetyNet headers being rolled back.
|
|
missing := fsHeaderSafetyNet + MaxHeaderFetch + 1
|
|
|
|
fastAttacker := tester.newPeer("fast-attack", protocol, chain.blocks[1:])
|
|
fastAttacker.withholdHeaders[chain.blocks[missing].Hash()] = struct{}{}
|
|
|
|
if err := tester.sync("fast-attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded fast attacker synchronisation")
|
|
}
|
|
if head := tester.chain.CurrentHeader().Number.Int64(); int(head) > MaxHeaderFetch {
|
|
t.Errorf("rollback head mismatch: have %v, want at most %v", head, MaxHeaderFetch)
|
|
}
|
|
// Attempt to sync with an attacker that feeds junk during the block import phase.
|
|
// This should result in both the last fsHeaderSafetyNet number of headers being
|
|
// rolled back, and also the pivot point being reverted to a non-block status.
|
|
missing = 3*fsHeaderSafetyNet + MaxHeaderFetch + 1
|
|
|
|
blockAttacker := tester.newPeer("block-attack", protocol, chain.blocks[1:])
|
|
fastAttacker.withholdHeaders[chain.blocks[missing].Hash()] = struct{}{} // Make sure the fast-attacker doesn't fill in
|
|
blockAttacker.withholdHeaders[chain.blocks[missing].Hash()] = struct{}{}
|
|
|
|
if err := tester.sync("block-attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded block attacker synchronisation")
|
|
}
|
|
if head := tester.chain.CurrentHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
|
|
t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
|
|
}
|
|
if mode == SnapSync {
|
|
if head := tester.chain.CurrentBlock().Number.Uint64(); head != 0 {
|
|
t.Errorf("fast sync pivot block #%d not rolled back", head)
|
|
}
|
|
}
|
|
// Attempt to sync with an attacker that withholds promised blocks after the
|
|
// fast sync pivot point. This could be a trial to leave the node with a bad
|
|
// but already imported pivot block.
|
|
withholdAttacker := tester.newPeer("withhold-attack", protocol, chain.blocks[1:])
|
|
|
|
tester.downloader.syncInitHook = func(uint64, uint64) {
|
|
for i := missing; i < len(chain.blocks); i++ {
|
|
withholdAttacker.withholdHeaders[chain.blocks[i].Hash()] = struct{}{}
|
|
}
|
|
tester.downloader.syncInitHook = nil
|
|
}
|
|
if err := tester.sync("withhold-attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded withholding attacker synchronisation")
|
|
}
|
|
if head := tester.chain.CurrentHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
|
|
t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
|
|
}
|
|
if mode == SnapSync {
|
|
if head := tester.chain.CurrentBlock().Number.Uint64(); head != 0 {
|
|
t.Errorf("fast sync pivot block #%d not rolled back", head)
|
|
}
|
|
}
|
|
// Synchronise with the valid peer and make sure sync succeeds. Since the last rollback
|
|
// should also disable fast syncing for this process, verify that we did a fresh full
|
|
// sync. Note, we can't assert anything about the receipts since we won't purge the
|
|
// database of them, hence we can't use assertOwnChain.
|
|
tester.newPeer("valid", protocol, chain.blocks[1:])
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
}
|
|
|
|
// Tests that a peer advertising a high TD doesn't get to stall the downloader
|
|
// afterwards by not sending any useful hashes.
|
|
func TestHighTDStarvationAttack66Full(t *testing.T) {
|
|
testHighTDStarvationAttack(t, eth.ETH66, FullSync)
|
|
}
|
|
func TestHighTDStarvationAttack66Snap(t *testing.T) {
|
|
testHighTDStarvationAttack(t, eth.ETH66, SnapSync)
|
|
}
|
|
func TestHighTDStarvationAttack66Light(t *testing.T) {
|
|
testHighTDStarvationAttack(t, eth.ETH66, LightSync)
|
|
}
|
|
func TestHighTDStarvationAttack67Full(t *testing.T) {
|
|
testHighTDStarvationAttack(t, eth.ETH67, FullSync)
|
|
}
|
|
func TestHighTDStarvationAttack67Snap(t *testing.T) {
|
|
testHighTDStarvationAttack(t, eth.ETH67, SnapSync)
|
|
}
|
|
func TestHighTDStarvationAttack67Light(t *testing.T) {
|
|
testHighTDStarvationAttack(t, eth.ETH67, LightSync)
|
|
}
|
|
|
|
func testHighTDStarvationAttack(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(1)
|
|
tester.newPeer("attack", protocol, chain.blocks[1:])
|
|
if err := tester.sync("attack", big.NewInt(1000000), mode); 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 TestBlockHeaderAttackerDropping66(t *testing.T) { testBlockHeaderAttackerDropping(t, eth.ETH66) }
|
|
func TestBlockHeaderAttackerDropping67(t *testing.T) { testBlockHeaderAttackerDropping(t, eth.ETH67) }
|
|
|
|
func testBlockHeaderAttackerDropping(t *testing.T, protocol uint) {
|
|
// 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
|
|
{errUnsyncedPeer, true}, // Peer was detected to be unsynced, drop it
|
|
{errNoPeers, false}, // No peers to download from, soft race, no issue
|
|
{errTimeout, true}, // No hashes received in due time, drop the peer
|
|
{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
|
|
{errInvalidAncestor, true}, // Agreed upon ancestor is not acceptable, drop the chain rewriter
|
|
{errInvalidChain, true}, // Hash chain was detected as invalid, definitely drop
|
|
{errInvalidBody, false}, // A bad peer was detected, but not the sync origin
|
|
{errInvalidReceipt, false}, // A bad peer was detected, but not the sync origin
|
|
{errCancelContentProcessing, false}, // Synchronisation was canceled, origin may be innocent, don't drop
|
|
}
|
|
// Run the tests and check disconnection status
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
chain := testChainBase.shorten(1)
|
|
|
|
for i, tt := range tests {
|
|
// Register a new peer and ensure its presence
|
|
id := fmt.Sprintf("test %d", i)
|
|
tester.newPeer(id, protocol, chain.blocks[1:])
|
|
if _, ok := tester.peers[id]; !ok {
|
|
t.Fatalf("test %d: registered peer not found", i)
|
|
}
|
|
// Simulate a synchronisation and check the required result
|
|
tester.downloader.synchroniseMock = func(string, common.Hash) error { return tt.result }
|
|
|
|
tester.downloader.LegacySync(id, tester.chain.Genesis().Hash(), big.NewInt(1000), nil, FullSync)
|
|
if _, ok := tester.peers[id]; !ok != tt.drop {
|
|
t.Errorf("test %d: peer drop mismatch for %v: have %v, want %v", i, tt.result, !ok, tt.drop)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tests that synchronisation progress (origin block number, current block number
|
|
// and highest block number) is tracked and updated correctly.
|
|
func TestSyncProgress66Full(t *testing.T) { testSyncProgress(t, eth.ETH66, FullSync) }
|
|
func TestSyncProgress66Snap(t *testing.T) { testSyncProgress(t, eth.ETH66, SnapSync) }
|
|
func TestSyncProgress66Light(t *testing.T) { testSyncProgress(t, eth.ETH66, LightSync) }
|
|
func TestSyncProgress67Full(t *testing.T) { testSyncProgress(t, eth.ETH67, FullSync) }
|
|
func TestSyncProgress67Snap(t *testing.T) { testSyncProgress(t, eth.ETH67, SnapSync) }
|
|
func TestSyncProgress67Light(t *testing.T) { testSyncProgress(t, eth.ETH67, LightSync) }
|
|
|
|
func testSyncProgress(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
|
|
// Set a sync init hook to catch progress changes
|
|
starting := make(chan struct{})
|
|
progress := make(chan struct{})
|
|
|
|
tester.downloader.syncInitHook = func(origin, latest uint64) {
|
|
starting <- struct{}{}
|
|
<-progress
|
|
}
|
|
checkProgress(t, tester.downloader, "pristine", ethereum.SyncProgress{})
|
|
|
|
// Synchronise half the blocks and check initial progress
|
|
tester.newPeer("peer-half", protocol, chain.shorten(len(chain.blocks) / 2).blocks[1:])
|
|
pending := new(sync.WaitGroup)
|
|
pending.Add(1)
|
|
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("peer-half", nil, mode); err != nil {
|
|
panic(fmt.Sprintf("failed to synchronise blocks: %v", err))
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "initial", ethereum.SyncProgress{
|
|
HighestBlock: uint64(len(chain.blocks)/2 - 1),
|
|
})
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Synchronise all the blocks and check continuation progress
|
|
tester.newPeer("peer-full", protocol, chain.blocks[1:])
|
|
pending.Add(1)
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("peer-full", nil, mode); err != nil {
|
|
panic(fmt.Sprintf("failed to synchronise blocks: %v", err))
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "completing", ethereum.SyncProgress{
|
|
StartingBlock: uint64(len(chain.blocks)/2 - 1),
|
|
CurrentBlock: uint64(len(chain.blocks)/2 - 1),
|
|
HighestBlock: uint64(len(chain.blocks) - 1),
|
|
})
|
|
|
|
// Check final progress after successful sync
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
StartingBlock: uint64(len(chain.blocks)/2 - 1),
|
|
CurrentBlock: uint64(len(chain.blocks) - 1),
|
|
HighestBlock: uint64(len(chain.blocks) - 1),
|
|
})
|
|
}
|
|
|
|
func checkProgress(t *testing.T, d *Downloader, stage string, want ethereum.SyncProgress) {
|
|
// Mark this method as a helper to report errors at callsite, not in here
|
|
t.Helper()
|
|
|
|
p := d.Progress()
|
|
if p.StartingBlock != want.StartingBlock || p.CurrentBlock != want.CurrentBlock || p.HighestBlock != want.HighestBlock {
|
|
t.Fatalf("%s progress mismatch:\nhave %+v\nwant %+v", stage, p, want)
|
|
}
|
|
}
|
|
|
|
// Tests that synchronisation progress (origin block number and highest block
|
|
// number) is tracked and updated correctly in case of a fork (or manual head
|
|
// revertal).
|
|
func TestForkedSyncProgress66Full(t *testing.T) { testForkedSyncProgress(t, eth.ETH66, FullSync) }
|
|
func TestForkedSyncProgress66Snap(t *testing.T) { testForkedSyncProgress(t, eth.ETH66, SnapSync) }
|
|
func TestForkedSyncProgress66Light(t *testing.T) { testForkedSyncProgress(t, eth.ETH66, LightSync) }
|
|
func TestForkedSyncProgress67Full(t *testing.T) { testForkedSyncProgress(t, eth.ETH67, FullSync) }
|
|
func TestForkedSyncProgress67Snap(t *testing.T) { testForkedSyncProgress(t, eth.ETH67, SnapSync) }
|
|
func TestForkedSyncProgress67Light(t *testing.T) { testForkedSyncProgress(t, eth.ETH67, LightSync) }
|
|
|
|
func testForkedSyncProgress(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA.shorten(len(testChainBase.blocks) + MaxHeaderFetch)
|
|
chainB := testChainForkLightB.shorten(len(testChainBase.blocks) + MaxHeaderFetch)
|
|
|
|
// Set a sync init hook to catch progress changes
|
|
starting := make(chan struct{})
|
|
progress := make(chan struct{})
|
|
|
|
tester.downloader.syncInitHook = func(origin, latest uint64) {
|
|
starting <- struct{}{}
|
|
<-progress
|
|
}
|
|
checkProgress(t, tester.downloader, "pristine", ethereum.SyncProgress{})
|
|
|
|
// Synchronise with one of the forks and check progress
|
|
tester.newPeer("fork A", protocol, chainA.blocks[1:])
|
|
pending := new(sync.WaitGroup)
|
|
pending.Add(1)
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("fork A", nil, mode); err != nil {
|
|
panic(fmt.Sprintf("failed to synchronise blocks: %v", err))
|
|
}
|
|
}()
|
|
<-starting
|
|
|
|
checkProgress(t, tester.downloader, "initial", ethereum.SyncProgress{
|
|
HighestBlock: uint64(len(chainA.blocks) - 1),
|
|
})
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Simulate a successful sync above the fork
|
|
tester.downloader.syncStatsChainOrigin = tester.downloader.syncStatsChainHeight
|
|
|
|
// Synchronise with the second fork and check progress resets
|
|
tester.newPeer("fork B", protocol, chainB.blocks[1:])
|
|
pending.Add(1)
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("fork B", nil, mode); err != nil {
|
|
panic(fmt.Sprintf("failed to synchronise blocks: %v", err))
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "forking", ethereum.SyncProgress{
|
|
StartingBlock: uint64(len(testChainBase.blocks)) - 1,
|
|
CurrentBlock: uint64(len(chainA.blocks) - 1),
|
|
HighestBlock: uint64(len(chainB.blocks) - 1),
|
|
})
|
|
|
|
// Check final progress after successful sync
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
StartingBlock: uint64(len(testChainBase.blocks)) - 1,
|
|
CurrentBlock: uint64(len(chainB.blocks) - 1),
|
|
HighestBlock: uint64(len(chainB.blocks) - 1),
|
|
})
|
|
}
|
|
|
|
// Tests that if synchronisation is aborted due to some failure, then the progress
|
|
// origin is not updated in the next sync cycle, as it should be considered the
|
|
// continuation of the previous sync and not a new instance.
|
|
func TestFailedSyncProgress66Full(t *testing.T) { testFailedSyncProgress(t, eth.ETH66, FullSync) }
|
|
func TestFailedSyncProgress66Snap(t *testing.T) { testFailedSyncProgress(t, eth.ETH66, SnapSync) }
|
|
func TestFailedSyncProgress66Light(t *testing.T) { testFailedSyncProgress(t, eth.ETH66, LightSync) }
|
|
func TestFailedSyncProgress67Full(t *testing.T) { testFailedSyncProgress(t, eth.ETH67, FullSync) }
|
|
func TestFailedSyncProgress67Snap(t *testing.T) { testFailedSyncProgress(t, eth.ETH67, SnapSync) }
|
|
func TestFailedSyncProgress67Light(t *testing.T) { testFailedSyncProgress(t, eth.ETH67, LightSync) }
|
|
|
|
func testFailedSyncProgress(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
|
|
// Set a sync init hook to catch progress changes
|
|
starting := make(chan struct{})
|
|
progress := make(chan struct{})
|
|
|
|
tester.downloader.syncInitHook = func(origin, latest uint64) {
|
|
starting <- struct{}{}
|
|
<-progress
|
|
}
|
|
checkProgress(t, tester.downloader, "pristine", ethereum.SyncProgress{})
|
|
|
|
// Attempt a full sync with a faulty peer
|
|
missing := len(chain.blocks)/2 - 1
|
|
|
|
faulter := tester.newPeer("faulty", protocol, chain.blocks[1:])
|
|
faulter.withholdHeaders[chain.blocks[missing].Hash()] = struct{}{}
|
|
|
|
pending := new(sync.WaitGroup)
|
|
pending.Add(1)
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("faulty", nil, mode); err == nil {
|
|
panic("succeeded faulty synchronisation")
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "initial", ethereum.SyncProgress{
|
|
HighestBlock: uint64(len(chain.blocks) - 1),
|
|
})
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
afterFailedSync := tester.downloader.Progress()
|
|
|
|
// Synchronise with a good peer and check that the progress origin remind the same
|
|
// after a failure
|
|
tester.newPeer("valid", protocol, chain.blocks[1:])
|
|
pending.Add(1)
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
panic(fmt.Sprintf("failed to synchronise blocks: %v", err))
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "completing", afterFailedSync)
|
|
|
|
// Check final progress after successful sync
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
CurrentBlock: uint64(len(chain.blocks) - 1),
|
|
HighestBlock: uint64(len(chain.blocks) - 1),
|
|
})
|
|
}
|
|
|
|
// Tests that if an attacker fakes a chain height, after the attack is detected,
|
|
// the progress height is successfully reduced at the next sync invocation.
|
|
func TestFakedSyncProgress66Full(t *testing.T) { testFakedSyncProgress(t, eth.ETH66, FullSync) }
|
|
func TestFakedSyncProgress66Snap(t *testing.T) { testFakedSyncProgress(t, eth.ETH66, SnapSync) }
|
|
func TestFakedSyncProgress66Light(t *testing.T) { testFakedSyncProgress(t, eth.ETH66, LightSync) }
|
|
func TestFakedSyncProgress67Full(t *testing.T) { testFakedSyncProgress(t, eth.ETH67, FullSync) }
|
|
func TestFakedSyncProgress67Snap(t *testing.T) { testFakedSyncProgress(t, eth.ETH67, SnapSync) }
|
|
func TestFakedSyncProgress67Light(t *testing.T) { testFakedSyncProgress(t, eth.ETH67, LightSync) }
|
|
|
|
func testFakedSyncProgress(t *testing.T, protocol uint, mode SyncMode) {
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
|
|
// Set a sync init hook to catch progress changes
|
|
starting := make(chan struct{})
|
|
progress := make(chan struct{})
|
|
tester.downloader.syncInitHook = func(origin, latest uint64) {
|
|
starting <- struct{}{}
|
|
<-progress
|
|
}
|
|
checkProgress(t, tester.downloader, "pristine", ethereum.SyncProgress{})
|
|
|
|
// Create and sync with an attacker that promises a higher chain than available.
|
|
attacker := tester.newPeer("attack", protocol, chain.blocks[1:])
|
|
numMissing := 5
|
|
for i := len(chain.blocks) - 2; i > len(chain.blocks)-numMissing; i-- {
|
|
attacker.withholdHeaders[chain.blocks[i].Hash()] = struct{}{}
|
|
}
|
|
pending := new(sync.WaitGroup)
|
|
pending.Add(1)
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("attack", nil, mode); err == nil {
|
|
panic("succeeded attacker synchronisation")
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "initial", ethereum.SyncProgress{
|
|
HighestBlock: uint64(len(chain.blocks) - 1),
|
|
})
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
afterFailedSync := tester.downloader.Progress()
|
|
|
|
// Synchronise with a good peer and check that the progress height has been reduced to
|
|
// the true value.
|
|
validChain := chain.shorten(len(chain.blocks) - numMissing)
|
|
tester.newPeer("valid", protocol, validChain.blocks[1:])
|
|
pending.Add(1)
|
|
|
|
go func() {
|
|
defer pending.Done()
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
panic(fmt.Sprintf("failed to synchronise blocks: %v", err))
|
|
}
|
|
}()
|
|
<-starting
|
|
checkProgress(t, tester.downloader, "completing", ethereum.SyncProgress{
|
|
CurrentBlock: afterFailedSync.CurrentBlock,
|
|
HighestBlock: uint64(len(validChain.blocks) - 1),
|
|
})
|
|
// Check final progress after successful sync.
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
CurrentBlock: uint64(len(validChain.blocks) - 1),
|
|
HighestBlock: uint64(len(validChain.blocks) - 1),
|
|
})
|
|
}
|
|
|
|
func TestRemoteHeaderRequestSpan(t *testing.T) {
|
|
testCases := []struct {
|
|
remoteHeight uint64
|
|
localHeight uint64
|
|
expected []int
|
|
}{
|
|
// Remote is way higher. We should ask for the remote head and go backwards
|
|
{1500, 1000,
|
|
[]int{1323, 1339, 1355, 1371, 1387, 1403, 1419, 1435, 1451, 1467, 1483, 1499},
|
|
},
|
|
{15000, 13006,
|
|
[]int{14823, 14839, 14855, 14871, 14887, 14903, 14919, 14935, 14951, 14967, 14983, 14999},
|
|
},
|
|
// Remote is pretty close to us. We don't have to fetch as many
|
|
{1200, 1150,
|
|
[]int{1149, 1154, 1159, 1164, 1169, 1174, 1179, 1184, 1189, 1194, 1199},
|
|
},
|
|
// Remote is equal to us (so on a fork with higher td)
|
|
// We should get the closest couple of ancestors
|
|
{1500, 1500,
|
|
[]int{1497, 1499},
|
|
},
|
|
// We're higher than the remote! Odd
|
|
{1000, 1500,
|
|
[]int{997, 999},
|
|
},
|
|
// Check some weird edgecases that it behaves somewhat rationally
|
|
{0, 1500,
|
|
[]int{0, 2},
|
|
},
|
|
{6000000, 0,
|
|
[]int{5999823, 5999839, 5999855, 5999871, 5999887, 5999903, 5999919, 5999935, 5999951, 5999967, 5999983, 5999999},
|
|
},
|
|
{0, 0,
|
|
[]int{0, 2},
|
|
},
|
|
}
|
|
reqs := func(from, count, span int) []int {
|
|
var r []int
|
|
num := from
|
|
for len(r) < count {
|
|
r = append(r, num)
|
|
num += span + 1
|
|
}
|
|
return r
|
|
}
|
|
for i, tt := range testCases {
|
|
from, count, span, max := calculateRequestSpan(tt.remoteHeight, tt.localHeight)
|
|
data := reqs(int(from), count, span)
|
|
|
|
if max != uint64(data[len(data)-1]) {
|
|
t.Errorf("test %d: wrong last value %d != %d", i, data[len(data)-1], max)
|
|
}
|
|
failed := false
|
|
if len(data) != len(tt.expected) {
|
|
failed = true
|
|
t.Errorf("test %d: length wrong, expected %d got %d", i, len(tt.expected), len(data))
|
|
} else {
|
|
for j, n := range data {
|
|
if n != tt.expected[j] {
|
|
failed = true
|
|
break
|
|
}
|
|
}
|
|
}
|
|
if failed {
|
|
res := strings.ReplaceAll(fmt.Sprint(data), " ", ",")
|
|
exp := strings.ReplaceAll(fmt.Sprint(tt.expected), " ", ",")
|
|
t.Logf("got: %v\n", res)
|
|
t.Logf("exp: %v\n", exp)
|
|
t.Errorf("test %d: wrong values", i)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tests that peers below a pre-configured checkpoint block are prevented from
|
|
// being fast-synced from, avoiding potential cheap eclipse attacks.
|
|
func TestCheckpointEnforcement66Full(t *testing.T) { testCheckpointEnforcement(t, eth.ETH66, FullSync) }
|
|
func TestCheckpointEnforcement66Snap(t *testing.T) { testCheckpointEnforcement(t, eth.ETH66, SnapSync) }
|
|
func TestCheckpointEnforcement66Light(t *testing.T) {
|
|
testCheckpointEnforcement(t, eth.ETH66, LightSync)
|
|
}
|
|
func TestCheckpointEnforcement67Full(t *testing.T) { testCheckpointEnforcement(t, eth.ETH67, FullSync) }
|
|
func TestCheckpointEnforcement67Snap(t *testing.T) { testCheckpointEnforcement(t, eth.ETH67, SnapSync) }
|
|
func TestCheckpointEnforcement67Light(t *testing.T) {
|
|
testCheckpointEnforcement(t, eth.ETH67, LightSync)
|
|
}
|
|
|
|
func testCheckpointEnforcement(t *testing.T, protocol uint, mode SyncMode) {
|
|
// Create a new tester with a particular hard coded checkpoint block
|
|
tester := newTester(t)
|
|
defer tester.terminate()
|
|
|
|
tester.downloader.checkpoint = uint64(fsMinFullBlocks) + 256
|
|
chain := testChainBase.shorten(int(tester.downloader.checkpoint) - 1)
|
|
|
|
// Attempt to sync with the peer and validate the result
|
|
tester.newPeer("peer", protocol, chain.blocks[1:])
|
|
|
|
var expect error
|
|
if mode == SnapSync || mode == LightSync {
|
|
expect = errUnsyncedPeer
|
|
}
|
|
if err := tester.sync("peer", nil, mode); !errors.Is(err, expect) {
|
|
t.Fatalf("block sync error mismatch: have %v, want %v", err, expect)
|
|
}
|
|
if mode == SnapSync || mode == LightSync {
|
|
assertOwnChain(t, tester, 1)
|
|
} else {
|
|
assertOwnChain(t, tester, len(chain.blocks))
|
|
}
|
|
}
|
|
|
|
// Tests that peers below a pre-configured checkpoint block are prevented from
|
|
// being fast-synced from, avoiding potential cheap eclipse attacks.
|
|
func TestBeaconSync66Full(t *testing.T) { testBeaconSync(t, eth.ETH66, FullSync) }
|
|
func TestBeaconSync66Snap(t *testing.T) { testBeaconSync(t, eth.ETH66, SnapSync) }
|
|
|
|
func testBeaconSync(t *testing.T, protocol uint, mode SyncMode) {
|
|
//log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
|
|
|
|
var cases = []struct {
|
|
name string // The name of testing scenario
|
|
local int // The length of local chain(canonical chain assumed), 0 means genesis is the head
|
|
}{
|
|
{name: "Beacon sync since genesis", local: 0},
|
|
{name: "Beacon sync with short local chain", local: 1},
|
|
{name: "Beacon sync with long local chain", local: blockCacheMaxItems - 15 - fsMinFullBlocks/2},
|
|
{name: "Beacon sync with full local chain", local: blockCacheMaxItems - 15 - 1},
|
|
}
|
|
for _, c := range cases {
|
|
t.Run(c.name, func(t *testing.T) {
|
|
success := make(chan struct{})
|
|
tester := newTesterWithNotification(t, func() {
|
|
close(success)
|
|
})
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheMaxItems - 15)
|
|
tester.newPeer("peer", protocol, chain.blocks[1:])
|
|
|
|
// Build the local chain segment if it's required
|
|
if c.local > 0 {
|
|
tester.chain.InsertChain(chain.blocks[1 : c.local+1])
|
|
}
|
|
if err := tester.downloader.BeaconSync(mode, chain.blocks[len(chain.blocks)-1].Header(), nil); err != nil {
|
|
t.Fatalf("Failed to beacon sync chain %v %v", c.name, err)
|
|
}
|
|
select {
|
|
case <-success:
|
|
// Ok, downloader fully cancelled after sync cycle
|
|
if bs := int(tester.chain.CurrentBlock().Number.Uint64()) + 1; bs != len(chain.blocks) {
|
|
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, len(chain.blocks))
|
|
}
|
|
case <-time.NewTimer(time.Second * 3).C:
|
|
t.Fatalf("Failed to sync chain in three seconds")
|
|
}
|
|
})
|
|
}
|
|
}
|