0bcff8f525
* core: speed up GenerateChain Use a mock implementation of ChainReader instead of creating and destroying a BlockChain object for each generated block. * eth/downloader: speed up tests by generating chain only once This change reworks the downloader tests so they share a common test blockchain instead of generating a chain in every test. The tests are roughly twice as fast now.
1482 lines
57 KiB
Go
1482 lines
57 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package downloader
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import (
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"errors"
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"fmt"
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"math/big"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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ethereum "github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/trie"
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)
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// Reduce some of the parameters to make the tester faster.
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func init() {
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MaxForkAncestry = uint64(10000)
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blockCacheItems = 1024
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fsHeaderContCheck = 500 * time.Millisecond
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}
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// downloadTester is a test simulator for mocking out local block chain.
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type downloadTester struct {
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downloader *Downloader
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genesis *types.Block // Genesis blocks used by the tester and peers
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stateDb ethdb.Database // Database used by the tester for syncing from peers
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peerDb ethdb.Database // Database of the peers containing all data
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peers map[string]*downloadTesterPeer
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ownHashes []common.Hash // Hash chain belonging to the tester
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ownHeaders map[common.Hash]*types.Header // Headers belonging to the tester
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ownBlocks map[common.Hash]*types.Block // Blocks belonging to the tester
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ownReceipts map[common.Hash]types.Receipts // Receipts belonging to the tester
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ownChainTd map[common.Hash]*big.Int // Total difficulties of the blocks in the local chain
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lock sync.RWMutex
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}
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// newTester creates a new downloader test mocker.
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func newTester() *downloadTester {
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tester := &downloadTester{
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genesis: testGenesis,
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peerDb: testDB,
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peers: make(map[string]*downloadTesterPeer),
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ownHashes: []common.Hash{testGenesis.Hash()},
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ownHeaders: map[common.Hash]*types.Header{testGenesis.Hash(): testGenesis.Header()},
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ownBlocks: map[common.Hash]*types.Block{testGenesis.Hash(): testGenesis},
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ownReceipts: map[common.Hash]types.Receipts{testGenesis.Hash(): nil},
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ownChainTd: map[common.Hash]*big.Int{testGenesis.Hash(): testGenesis.Difficulty()},
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}
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tester.stateDb = ethdb.NewMemDatabase()
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tester.stateDb.Put(testGenesis.Root().Bytes(), []byte{0x00})
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tester.downloader = New(FullSync, tester.stateDb, new(event.TypeMux), tester, nil, tester.dropPeer)
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return tester
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}
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// terminate aborts any operations on the embedded downloader and releases all
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// held resources.
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func (dl *downloadTester) terminate() {
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dl.downloader.Terminate()
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}
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// sync starts synchronizing with a remote peer, blocking until it completes.
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func (dl *downloadTester) sync(id string, td *big.Int, mode SyncMode) error {
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dl.lock.RLock()
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hash := dl.peers[id].chain.headBlock().Hash()
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// If no particular TD was requested, load from the peer's blockchain
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if td == nil {
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td = dl.peers[id].chain.td(hash)
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}
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dl.lock.RUnlock()
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// Synchronise with the chosen peer and ensure proper cleanup afterwards
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err := dl.downloader.synchronise(id, hash, td, mode)
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select {
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case <-dl.downloader.cancelCh:
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// Ok, downloader fully cancelled after sync cycle
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default:
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// Downloader is still accepting packets, can block a peer up
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panic("downloader active post sync cycle") // panic will be caught by tester
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}
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return err
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}
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// HasHeader checks if a header is present in the testers canonical chain.
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func (dl *downloadTester) HasHeader(hash common.Hash, number uint64) bool {
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return dl.GetHeaderByHash(hash) != nil
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}
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// HasBlock checks if a block is present in the testers canonical chain.
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func (dl *downloadTester) HasBlock(hash common.Hash, number uint64) bool {
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return dl.GetBlockByHash(hash) != nil
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}
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// GetHeader retrieves a header from the testers canonical chain.
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func (dl *downloadTester) GetHeaderByHash(hash common.Hash) *types.Header {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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return dl.ownHeaders[hash]
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}
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// GetBlock retrieves a block from the testers canonical chain.
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func (dl *downloadTester) GetBlockByHash(hash common.Hash) *types.Block {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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return dl.ownBlocks[hash]
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}
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// CurrentHeader retrieves the current head header from the canonical chain.
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func (dl *downloadTester) CurrentHeader() *types.Header {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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for i := len(dl.ownHashes) - 1; i >= 0; i-- {
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if header := dl.ownHeaders[dl.ownHashes[i]]; header != nil {
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return header
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}
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}
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return dl.genesis.Header()
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}
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// CurrentBlock retrieves the current head block from the canonical chain.
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func (dl *downloadTester) CurrentBlock() *types.Block {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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for i := len(dl.ownHashes) - 1; i >= 0; i-- {
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if block := dl.ownBlocks[dl.ownHashes[i]]; block != nil {
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if _, err := dl.stateDb.Get(block.Root().Bytes()); err == nil {
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return block
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}
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}
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}
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return dl.genesis
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}
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// CurrentFastBlock retrieves the current head fast-sync block from the canonical chain.
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func (dl *downloadTester) CurrentFastBlock() *types.Block {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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for i := len(dl.ownHashes) - 1; i >= 0; i-- {
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if block := dl.ownBlocks[dl.ownHashes[i]]; block != nil {
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return block
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}
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}
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return dl.genesis
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}
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// FastSyncCommitHead manually sets the head block to a given hash.
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func (dl *downloadTester) FastSyncCommitHead(hash common.Hash) error {
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// For now only check that the state trie is correct
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if block := dl.GetBlockByHash(hash); block != nil {
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_, err := trie.NewSecure(block.Root(), trie.NewDatabase(dl.stateDb), 0)
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return err
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}
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return fmt.Errorf("non existent block: %x", hash[:4])
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}
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// GetTd retrieves the block's total difficulty from the canonical chain.
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func (dl *downloadTester) GetTd(hash common.Hash, number uint64) *big.Int {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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return dl.ownChainTd[hash]
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}
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// InsertHeaderChain injects a new batch of headers into the simulated chain.
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func (dl *downloadTester) InsertHeaderChain(headers []*types.Header, checkFreq int) (i int, err error) {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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// Do a quick check, as the blockchain.InsertHeaderChain doesn't insert anything in case of errors
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if _, ok := dl.ownHeaders[headers[0].ParentHash]; !ok {
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return 0, errors.New("unknown parent")
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}
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for i := 1; i < len(headers); i++ {
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if headers[i].ParentHash != headers[i-1].Hash() {
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return i, errors.New("unknown parent")
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}
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}
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// Do a full insert if pre-checks passed
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for i, header := range headers {
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if _, ok := dl.ownHeaders[header.Hash()]; ok {
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continue
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}
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if _, ok := dl.ownHeaders[header.ParentHash]; !ok {
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return i, errors.New("unknown parent")
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}
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dl.ownHashes = append(dl.ownHashes, header.Hash())
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dl.ownHeaders[header.Hash()] = header
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dl.ownChainTd[header.Hash()] = new(big.Int).Add(dl.ownChainTd[header.ParentHash], header.Difficulty)
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}
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return len(headers), nil
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}
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// InsertChain injects a new batch of blocks into the simulated chain.
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func (dl *downloadTester) InsertChain(blocks types.Blocks) (i int, err error) {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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for i, block := range blocks {
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if parent, ok := dl.ownBlocks[block.ParentHash()]; !ok {
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return i, errors.New("unknown parent")
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} else if _, err := dl.stateDb.Get(parent.Root().Bytes()); err != nil {
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return i, fmt.Errorf("unknown parent state %x: %v", parent.Root(), err)
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}
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if _, ok := dl.ownHeaders[block.Hash()]; !ok {
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dl.ownHashes = append(dl.ownHashes, block.Hash())
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dl.ownHeaders[block.Hash()] = block.Header()
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}
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dl.ownBlocks[block.Hash()] = block
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dl.stateDb.Put(block.Root().Bytes(), []byte{0x00})
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dl.ownChainTd[block.Hash()] = new(big.Int).Add(dl.ownChainTd[block.ParentHash()], block.Difficulty())
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}
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return len(blocks), nil
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}
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// InsertReceiptChain injects a new batch of receipts into the simulated chain.
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func (dl *downloadTester) InsertReceiptChain(blocks types.Blocks, receipts []types.Receipts) (i int, err error) {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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for i := 0; i < len(blocks) && i < len(receipts); i++ {
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if _, ok := dl.ownHeaders[blocks[i].Hash()]; !ok {
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return i, errors.New("unknown owner")
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}
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if _, ok := dl.ownBlocks[blocks[i].ParentHash()]; !ok {
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return i, errors.New("unknown parent")
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}
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dl.ownBlocks[blocks[i].Hash()] = blocks[i]
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dl.ownReceipts[blocks[i].Hash()] = receipts[i]
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}
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return len(blocks), nil
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}
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// Rollback removes some recently added elements from the chain.
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func (dl *downloadTester) Rollback(hashes []common.Hash) {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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for i := len(hashes) - 1; i >= 0; i-- {
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if dl.ownHashes[len(dl.ownHashes)-1] == hashes[i] {
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dl.ownHashes = dl.ownHashes[:len(dl.ownHashes)-1]
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}
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delete(dl.ownChainTd, hashes[i])
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delete(dl.ownHeaders, hashes[i])
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delete(dl.ownReceipts, hashes[i])
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delete(dl.ownBlocks, hashes[i])
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}
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}
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// newPeer registers a new block download source into the downloader.
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func (dl *downloadTester) newPeer(id string, version int, chain *testChain) error {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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peer := &downloadTesterPeer{dl: dl, id: id, chain: chain}
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dl.peers[id] = peer
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return dl.downloader.RegisterPeer(id, version, peer)
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}
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// dropPeer simulates a hard peer removal from the connection pool.
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func (dl *downloadTester) dropPeer(id string) {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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delete(dl.peers, id)
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dl.downloader.UnregisterPeer(id)
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}
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type downloadTesterPeer struct {
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dl *downloadTester
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id string
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lock sync.RWMutex
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chain *testChain
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missingStates map[common.Hash]bool // State entries that fast sync should not return
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}
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// Head constructs a function to retrieve a peer's current head hash
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// and total difficulty.
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func (dlp *downloadTesterPeer) Head() (common.Hash, *big.Int) {
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b := dlp.chain.headBlock()
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return b.Hash(), dlp.chain.td(b.Hash())
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}
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// RequestHeadersByHash constructs a GetBlockHeaders function based on a hashed
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// origin; associated with a particular peer in the download tester. The returned
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// function can be used to retrieve batches of headers from the particular peer.
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func (dlp *downloadTesterPeer) RequestHeadersByHash(origin common.Hash, amount int, skip int, reverse bool) error {
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if reverse {
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panic("reverse header requests not supported")
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}
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result := dlp.chain.headersByHash(origin, amount, skip)
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go dlp.dl.downloader.DeliverHeaders(dlp.id, result)
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return nil
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}
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// RequestHeadersByNumber constructs a GetBlockHeaders function based on a numbered
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// origin; associated with a particular peer in the download tester. The returned
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// function can be used to retrieve batches of headers from the particular peer.
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func (dlp *downloadTesterPeer) RequestHeadersByNumber(origin uint64, amount int, skip int, reverse bool) error {
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if reverse {
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panic("reverse header requests not supported")
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}
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result := dlp.chain.headersByNumber(origin, amount, skip)
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go dlp.dl.downloader.DeliverHeaders(dlp.id, result)
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return nil
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}
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// RequestBodies constructs a getBlockBodies method associated with a particular
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// peer in the download tester. The returned function can be used to retrieve
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// batches of block bodies from the particularly requested peer.
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func (dlp *downloadTesterPeer) RequestBodies(hashes []common.Hash) error {
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txs, uncles := dlp.chain.bodies(hashes)
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go dlp.dl.downloader.DeliverBodies(dlp.id, txs, uncles)
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return nil
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}
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// RequestReceipts constructs a getReceipts method associated with a particular
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// peer in the download tester. The returned function can be used to retrieve
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// batches of block receipts from the particularly requested peer.
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func (dlp *downloadTesterPeer) RequestReceipts(hashes []common.Hash) error {
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receipts := dlp.chain.receipts(hashes)
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go dlp.dl.downloader.DeliverReceipts(dlp.id, receipts)
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return nil
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}
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// RequestNodeData constructs a getNodeData method associated with a particular
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// peer in the download tester. The returned function can be used to retrieve
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// batches of node state data from the particularly requested peer.
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func (dlp *downloadTesterPeer) RequestNodeData(hashes []common.Hash) error {
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dlp.dl.lock.RLock()
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defer dlp.dl.lock.RUnlock()
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results := make([][]byte, 0, len(hashes))
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for _, hash := range hashes {
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if data, err := dlp.dl.peerDb.Get(hash.Bytes()); err == nil {
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if !dlp.missingStates[hash] {
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results = append(results, data)
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}
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}
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}
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go dlp.dl.downloader.DeliverNodeData(dlp.id, results)
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return nil
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}
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// assertOwnChain checks if the local chain contains the correct number of items
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// of the various chain components.
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func assertOwnChain(t *testing.T, tester *downloadTester, length int) {
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assertOwnForkedChain(t, tester, 1, []int{length})
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}
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// assertOwnForkedChain checks if the local forked chain contains the correct
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// number of items of the various chain components.
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func assertOwnForkedChain(t *testing.T, tester *downloadTester, common int, lengths []int) {
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// Initialize the counters for the first fork
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headers, blocks, receipts := lengths[0], lengths[0], lengths[0]-fsMinFullBlocks
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if receipts < 0 {
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receipts = 1
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}
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// Update the counters for each subsequent fork
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for _, length := range lengths[1:] {
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headers += length - common
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blocks += length - common
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receipts += length - common - fsMinFullBlocks
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}
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switch tester.downloader.mode {
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case FullSync:
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receipts = 1
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case LightSync:
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blocks, receipts = 1, 1
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}
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if hs := len(tester.ownHeaders); hs != headers {
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t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, headers)
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}
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if bs := len(tester.ownBlocks); bs != blocks {
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t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, blocks)
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}
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if rs := len(tester.ownReceipts); rs != receipts {
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t.Fatalf("synchronised receipts mismatch: have %v, want %v", rs, receipts)
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}
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}
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// Tests that simple synchronization against a canonical chain works correctly.
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// In this test common ancestor lookup should be short circuited and not require
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// binary searching.
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func TestCanonicalSynchronisation62(t *testing.T) { testCanonicalSynchronisation(t, 62, FullSync) }
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func TestCanonicalSynchronisation63Full(t *testing.T) { testCanonicalSynchronisation(t, 63, FullSync) }
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func TestCanonicalSynchronisation63Fast(t *testing.T) { testCanonicalSynchronisation(t, 63, FastSync) }
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func TestCanonicalSynchronisation64Full(t *testing.T) { testCanonicalSynchronisation(t, 64, FullSync) }
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func TestCanonicalSynchronisation64Fast(t *testing.T) { testCanonicalSynchronisation(t, 64, FastSync) }
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func TestCanonicalSynchronisation64Light(t *testing.T) { testCanonicalSynchronisation(t, 64, LightSync) }
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func testCanonicalSynchronisation(t *testing.T, protocol int, mode SyncMode) {
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t.Parallel()
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tester := newTester()
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defer tester.terminate()
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// Create a small enough block chain to download
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chain := testChainBase.shorten(blockCacheItems - 15)
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tester.newPeer("peer", protocol, chain)
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// Synchronise with the peer and make sure all relevant data was retrieved
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if err := tester.sync("peer", nil, mode); err != nil {
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t.Fatalf("failed to synchronise blocks: %v", err)
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}
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assertOwnChain(t, tester, chain.len())
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}
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// Tests that if a large batch of blocks are being downloaded, it is throttled
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// until the cached blocks are retrieved.
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func TestThrottling62(t *testing.T) { testThrottling(t, 62, FullSync) }
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func TestThrottling63Full(t *testing.T) { testThrottling(t, 63, FullSync) }
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func TestThrottling63Fast(t *testing.T) { testThrottling(t, 63, FastSync) }
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func TestThrottling64Full(t *testing.T) { testThrottling(t, 64, FullSync) }
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func TestThrottling64Fast(t *testing.T) { testThrottling(t, 64, FastSync) }
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func testThrottling(t *testing.T, protocol int, mode SyncMode) {
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t.Parallel()
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tester := newTester()
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defer tester.terminate()
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// Create a long block chain to download and the tester
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targetBlocks := testChainBase.len() - 1
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tester.newPeer("peer", protocol, testChainBase)
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// 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)
|
|
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 := len(tester.ownBlocks)
|
|
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()
|
|
cached = len(tester.downloader.queue.blockDonePool)
|
|
if mode == FastSync {
|
|
if receipts := len(tester.downloader.queue.receiptDonePool); receipts < cached {
|
|
cached = receipts
|
|
}
|
|
}
|
|
frozen = int(atomic.LoadUint32(&blocked))
|
|
retrieved = len(tester.ownBlocks)
|
|
tester.downloader.queue.lock.Unlock()
|
|
tester.lock.Unlock()
|
|
|
|
if cached == blockCacheItems || cached == blockCacheItems-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 = len(tester.ownBlocks)
|
|
tester.lock.RUnlock()
|
|
if cached != blockCacheItems && cached != blockCacheItems-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, blockCacheItems, 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 TestForkedSync62(t *testing.T) { testForkedSync(t, 62, FullSync) }
|
|
func TestForkedSync63Full(t *testing.T) { testForkedSync(t, 63, FullSync) }
|
|
func TestForkedSync63Fast(t *testing.T) { testForkedSync(t, 63, FastSync) }
|
|
func TestForkedSync64Full(t *testing.T) { testForkedSync(t, 64, FullSync) }
|
|
func TestForkedSync64Fast(t *testing.T) { testForkedSync(t, 64, FastSync) }
|
|
func TestForkedSync64Light(t *testing.T) { testForkedSync(t, 64, LightSync) }
|
|
|
|
func testForkedSync(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA.shorten(testChainBase.len() + 80)
|
|
chainB := testChainForkLightB.shorten(testChainBase.len() + 80)
|
|
tester.newPeer("fork A", protocol, chainA)
|
|
tester.newPeer("fork B", protocol, chainB)
|
|
|
|
// 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, chainA.len())
|
|
|
|
// 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)
|
|
}
|
|
assertOwnForkedChain(t, tester, testChainBase.len(), []int{chainA.len(), chainB.len()})
|
|
}
|
|
|
|
// Tests that synchronising against a much shorter but much heavyer fork works
|
|
// corrently and is not dropped.
|
|
func TestHeavyForkedSync62(t *testing.T) { testHeavyForkedSync(t, 62, FullSync) }
|
|
func TestHeavyForkedSync63Full(t *testing.T) { testHeavyForkedSync(t, 63, FullSync) }
|
|
func TestHeavyForkedSync63Fast(t *testing.T) { testHeavyForkedSync(t, 63, FastSync) }
|
|
func TestHeavyForkedSync64Full(t *testing.T) { testHeavyForkedSync(t, 64, FullSync) }
|
|
func TestHeavyForkedSync64Fast(t *testing.T) { testHeavyForkedSync(t, 64, FastSync) }
|
|
func TestHeavyForkedSync64Light(t *testing.T) { testHeavyForkedSync(t, 64, LightSync) }
|
|
|
|
func testHeavyForkedSync(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA.shorten(testChainBase.len() + 80)
|
|
chainB := testChainForkHeavy.shorten(testChainBase.len() + 80)
|
|
tester.newPeer("light", protocol, chainA)
|
|
tester.newPeer("heavy", protocol, chainB)
|
|
|
|
// 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, chainA.len())
|
|
|
|
// 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)
|
|
}
|
|
assertOwnForkedChain(t, tester, testChainBase.len(), []int{chainA.len(), chainB.len()})
|
|
}
|
|
|
|
// 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 TestBoundedForkedSync62(t *testing.T) { testBoundedForkedSync(t, 62, FullSync) }
|
|
func TestBoundedForkedSync63Full(t *testing.T) { testBoundedForkedSync(t, 63, FullSync) }
|
|
func TestBoundedForkedSync63Fast(t *testing.T) { testBoundedForkedSync(t, 63, FastSync) }
|
|
func TestBoundedForkedSync64Full(t *testing.T) { testBoundedForkedSync(t, 64, FullSync) }
|
|
func TestBoundedForkedSync64Fast(t *testing.T) { testBoundedForkedSync(t, 64, FastSync) }
|
|
func TestBoundedForkedSync64Light(t *testing.T) { testBoundedForkedSync(t, 64, LightSync) }
|
|
|
|
func testBoundedForkedSync(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chainA := testChainForkLightA
|
|
chainB := testChainForkLightB
|
|
tester.newPeer("original", protocol, chainA)
|
|
tester.newPeer("rewriter", protocol, chainB)
|
|
|
|
// 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, chainA.len())
|
|
|
|
// 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 TestBoundedHeavyForkedSync62(t *testing.T) { testBoundedHeavyForkedSync(t, 62, FullSync) }
|
|
func TestBoundedHeavyForkedSync63Full(t *testing.T) { testBoundedHeavyForkedSync(t, 63, FullSync) }
|
|
func TestBoundedHeavyForkedSync63Fast(t *testing.T) { testBoundedHeavyForkedSync(t, 63, FastSync) }
|
|
func TestBoundedHeavyForkedSync64Full(t *testing.T) { testBoundedHeavyForkedSync(t, 64, FullSync) }
|
|
func TestBoundedHeavyForkedSync64Fast(t *testing.T) { testBoundedHeavyForkedSync(t, 64, FastSync) }
|
|
func TestBoundedHeavyForkedSync64Light(t *testing.T) { testBoundedHeavyForkedSync(t, 64, LightSync) }
|
|
|
|
func testBoundedHeavyForkedSync(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// Create a long enough forked chain
|
|
chainA := testChainForkLightA
|
|
chainB := testChainForkHeavy
|
|
tester.newPeer("original", protocol, chainA)
|
|
tester.newPeer("heavy-rewriter", protocol, chainB)
|
|
|
|
// 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, chainA.len())
|
|
|
|
// 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 an inactive downloader will not accept incoming block headers and
|
|
// bodies.
|
|
func TestInactiveDownloader62(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// 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.DeliverBodies("bad peer", [][]*types.Transaction{}, [][]*types.Header{}); err != errNoSyncActive {
|
|
t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
|
|
}
|
|
}
|
|
|
|
// Tests that an inactive downloader will not accept incoming block headers,
|
|
// bodies and receipts.
|
|
func TestInactiveDownloader63(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// 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.DeliverBodies("bad peer", [][]*types.Transaction{}, [][]*types.Header{}); err != errNoSyncActive {
|
|
t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
|
|
}
|
|
if err := tester.downloader.DeliverReceipts("bad peer", [][]*types.Receipt{}); err != errNoSyncActive {
|
|
t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
|
|
}
|
|
}
|
|
|
|
// Tests that a canceled download wipes all previously accumulated state.
|
|
func TestCancel62(t *testing.T) { testCancel(t, 62, FullSync) }
|
|
func TestCancel63Full(t *testing.T) { testCancel(t, 63, FullSync) }
|
|
func TestCancel63Fast(t *testing.T) { testCancel(t, 63, FastSync) }
|
|
func TestCancel64Full(t *testing.T) { testCancel(t, 64, FullSync) }
|
|
func TestCancel64Fast(t *testing.T) { testCancel(t, 64, FastSync) }
|
|
func TestCancel64Light(t *testing.T) { testCancel(t, 64, LightSync) }
|
|
|
|
func testCancel(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(MaxHeaderFetch)
|
|
tester.newPeer("peer", protocol, chain)
|
|
|
|
// 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 TestMultiSynchronisation62(t *testing.T) { testMultiSynchronisation(t, 62, FullSync) }
|
|
func TestMultiSynchronisation63Full(t *testing.T) { testMultiSynchronisation(t, 63, FullSync) }
|
|
func TestMultiSynchronisation63Fast(t *testing.T) { testMultiSynchronisation(t, 63, FastSync) }
|
|
func TestMultiSynchronisation64Full(t *testing.T) { testMultiSynchronisation(t, 64, FullSync) }
|
|
func TestMultiSynchronisation64Fast(t *testing.T) { testMultiSynchronisation(t, 64, FastSync) }
|
|
func TestMultiSynchronisation64Light(t *testing.T) { testMultiSynchronisation(t, 64, LightSync) }
|
|
|
|
func testMultiSynchronisation(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
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(chain.len()/(i+1)))
|
|
}
|
|
if err := tester.sync("peer #0", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, chain.len())
|
|
}
|
|
|
|
// Tests that synchronisations behave well in multi-version protocol environments
|
|
// and not wreak havoc on other nodes in the network.
|
|
func TestMultiProtoSynchronisation62(t *testing.T) { testMultiProtoSync(t, 62, FullSync) }
|
|
func TestMultiProtoSynchronisation63Full(t *testing.T) { testMultiProtoSync(t, 63, FullSync) }
|
|
func TestMultiProtoSynchronisation63Fast(t *testing.T) { testMultiProtoSync(t, 63, FastSync) }
|
|
func TestMultiProtoSynchronisation64Full(t *testing.T) { testMultiProtoSync(t, 64, FullSync) }
|
|
func TestMultiProtoSynchronisation64Fast(t *testing.T) { testMultiProtoSync(t, 64, FastSync) }
|
|
func TestMultiProtoSynchronisation64Light(t *testing.T) { testMultiProtoSync(t, 64, LightSync) }
|
|
|
|
func testMultiProtoSync(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// Create a small enough block chain to download
|
|
chain := testChainBase.shorten(blockCacheItems - 15)
|
|
|
|
// Create peers of every type
|
|
tester.newPeer("peer 62", 62, chain)
|
|
tester.newPeer("peer 63", 63, chain)
|
|
tester.newPeer("peer 64", 64, chain)
|
|
|
|
// 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, chain.len())
|
|
|
|
// Check that no peers have been dropped off
|
|
for _, version := range []int{62, 63, 64} {
|
|
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 TestEmptyShortCircuit62(t *testing.T) { testEmptyShortCircuit(t, 62, FullSync) }
|
|
func TestEmptyShortCircuit63Full(t *testing.T) { testEmptyShortCircuit(t, 63, FullSync) }
|
|
func TestEmptyShortCircuit63Fast(t *testing.T) { testEmptyShortCircuit(t, 63, FastSync) }
|
|
func TestEmptyShortCircuit64Full(t *testing.T) { testEmptyShortCircuit(t, 64, FullSync) }
|
|
func TestEmptyShortCircuit64Fast(t *testing.T) { testEmptyShortCircuit(t, 64, FastSync) }
|
|
func TestEmptyShortCircuit64Light(t *testing.T) { testEmptyShortCircuit(t, 64, LightSync) }
|
|
|
|
func testEmptyShortCircuit(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// Create a block chain to download
|
|
chain := testChainBase
|
|
tester.newPeer("peer", protocol, chain)
|
|
|
|
// 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, chain.len())
|
|
|
|
// Validate the number of block bodies that should have been requested
|
|
bodiesNeeded, receiptsNeeded := 0, 0
|
|
for _, block := range chain.blockm {
|
|
if mode != LightSync && block != tester.genesis && (len(block.Transactions()) > 0 || len(block.Uncles()) > 0) {
|
|
bodiesNeeded++
|
|
}
|
|
}
|
|
for _, receipt := range chain.receiptm {
|
|
if mode == FastSync && len(receipt) > 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 TestMissingHeaderAttack62(t *testing.T) { testMissingHeaderAttack(t, 62, FullSync) }
|
|
func TestMissingHeaderAttack63Full(t *testing.T) { testMissingHeaderAttack(t, 63, FullSync) }
|
|
func TestMissingHeaderAttack63Fast(t *testing.T) { testMissingHeaderAttack(t, 63, FastSync) }
|
|
func TestMissingHeaderAttack64Full(t *testing.T) { testMissingHeaderAttack(t, 64, FullSync) }
|
|
func TestMissingHeaderAttack64Fast(t *testing.T) { testMissingHeaderAttack(t, 64, FastSync) }
|
|
func TestMissingHeaderAttack64Light(t *testing.T) { testMissingHeaderAttack(t, 64, LightSync) }
|
|
|
|
func testMissingHeaderAttack(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheItems - 15)
|
|
brokenChain := chain.shorten(chain.len())
|
|
delete(brokenChain.headerm, brokenChain.chain[brokenChain.len()/2])
|
|
tester.newPeer("attack", protocol, brokenChain)
|
|
|
|
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)
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, chain.len())
|
|
}
|
|
|
|
// Tests that if requested headers are shifted (i.e. first is missing), the queue
|
|
// detects the invalid numbering.
|
|
func TestShiftedHeaderAttack62(t *testing.T) { testShiftedHeaderAttack(t, 62, FullSync) }
|
|
func TestShiftedHeaderAttack63Full(t *testing.T) { testShiftedHeaderAttack(t, 63, FullSync) }
|
|
func TestShiftedHeaderAttack63Fast(t *testing.T) { testShiftedHeaderAttack(t, 63, FastSync) }
|
|
func TestShiftedHeaderAttack64Full(t *testing.T) { testShiftedHeaderAttack(t, 64, FullSync) }
|
|
func TestShiftedHeaderAttack64Fast(t *testing.T) { testShiftedHeaderAttack(t, 64, FastSync) }
|
|
func TestShiftedHeaderAttack64Light(t *testing.T) { testShiftedHeaderAttack(t, 64, LightSync) }
|
|
|
|
func testShiftedHeaderAttack(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(blockCacheItems - 15)
|
|
|
|
// Attempt a full sync with an attacker feeding shifted headers
|
|
brokenChain := chain.shorten(chain.len())
|
|
delete(brokenChain.headerm, brokenChain.chain[1])
|
|
delete(brokenChain.blockm, brokenChain.chain[1])
|
|
delete(brokenChain.receiptm, brokenChain.chain[1])
|
|
tester.newPeer("attack", protocol, brokenChain)
|
|
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)
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, chain.len())
|
|
}
|
|
|
|
// 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 TestInvalidHeaderRollback63Fast(t *testing.T) { testInvalidHeaderRollback(t, 63, FastSync) }
|
|
func TestInvalidHeaderRollback64Fast(t *testing.T) { testInvalidHeaderRollback(t, 64, FastSync) }
|
|
func TestInvalidHeaderRollback64Light(t *testing.T) { testInvalidHeaderRollback(t, 64, LightSync) }
|
|
|
|
func testInvalidHeaderRollback(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
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
|
|
fastAttackChain := chain.shorten(chain.len())
|
|
delete(fastAttackChain.headerm, fastAttackChain.chain[missing])
|
|
tester.newPeer("fast-attack", protocol, fastAttackChain)
|
|
|
|
if err := tester.sync("fast-attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded fast attacker synchronisation")
|
|
}
|
|
if head := tester.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
|
|
blockAttackChain := chain.shorten(chain.len())
|
|
delete(fastAttackChain.headerm, fastAttackChain.chain[missing]) // Make sure the fast-attacker doesn't fill in
|
|
delete(blockAttackChain.headerm, blockAttackChain.chain[missing])
|
|
tester.newPeer("block-attack", protocol, blockAttackChain)
|
|
|
|
if err := tester.sync("block-attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded block attacker synchronisation")
|
|
}
|
|
if head := tester.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 == FastSync {
|
|
if head := tester.CurrentBlock().NumberU64(); 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.
|
|
withholdAttackChain := chain.shorten(chain.len())
|
|
tester.newPeer("withhold-attack", protocol, withholdAttackChain)
|
|
tester.downloader.syncInitHook = func(uint64, uint64) {
|
|
for i := missing; i < withholdAttackChain.len(); i++ {
|
|
delete(withholdAttackChain.headerm, withholdAttackChain.chain[i])
|
|
}
|
|
tester.downloader.syncInitHook = nil
|
|
}
|
|
if err := tester.sync("withhold-attack", nil, mode); err == nil {
|
|
t.Fatalf("succeeded withholding attacker synchronisation")
|
|
}
|
|
if head := tester.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 == FastSync {
|
|
if head := tester.CurrentBlock().NumberU64(); 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)
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
if hs := len(tester.ownHeaders); hs != chain.len() {
|
|
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, chain.len())
|
|
}
|
|
if mode != LightSync {
|
|
if bs := len(tester.ownBlocks); bs != chain.len() {
|
|
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, chain.len())
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tests that a peer advertising an high TD doesn't get to stall the downloader
|
|
// afterwards by not sending any useful hashes.
|
|
func TestHighTDStarvationAttack62(t *testing.T) { testHighTDStarvationAttack(t, 62, FullSync) }
|
|
func TestHighTDStarvationAttack63Full(t *testing.T) { testHighTDStarvationAttack(t, 63, FullSync) }
|
|
func TestHighTDStarvationAttack63Fast(t *testing.T) { testHighTDStarvationAttack(t, 63, FastSync) }
|
|
func TestHighTDStarvationAttack64Full(t *testing.T) { testHighTDStarvationAttack(t, 64, FullSync) }
|
|
func TestHighTDStarvationAttack64Fast(t *testing.T) { testHighTDStarvationAttack(t, 64, FastSync) }
|
|
func TestHighTDStarvationAttack64Light(t *testing.T) { testHighTDStarvationAttack(t, 64, LightSync) }
|
|
|
|
func testHighTDStarvationAttack(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
chain := testChainBase.shorten(1)
|
|
tester.newPeer("attack", protocol, chain)
|
|
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 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) {
|
|
t.Parallel()
|
|
|
|
// 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
|
|
{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
|
|
{errInvalidBlock, false}, // A bad peer was detected, but not the sync origin
|
|
{errInvalidBody, false}, // A bad peer was detected, but not the sync origin
|
|
{errInvalidReceipt, false}, // A bad peer was detected, but not the sync origin
|
|
{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
|
|
{errCancelReceiptFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
|
|
{errCancelHeaderProcessing, false}, // Synchronisation was canceled, origin may be innocent, don't drop
|
|
{errCancelContentProcessing, false}, // Synchronisation was canceled, origin may be innocent, don't drop
|
|
}
|
|
// Run the tests and check disconnection status
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
chain := testChainBase.shorten(1)
|
|
|
|
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, protocol, chain); err != nil {
|
|
t.Fatalf("test %d: failed to register new peer: %v", i, err)
|
|
}
|
|
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.Synchronise(id, tester.genesis.Hash(), big.NewInt(1000), 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 TestSyncProgress62(t *testing.T) { testSyncProgress(t, 62, FullSync) }
|
|
func TestSyncProgress63Full(t *testing.T) { testSyncProgress(t, 63, FullSync) }
|
|
func TestSyncProgress63Fast(t *testing.T) { testSyncProgress(t, 63, FastSync) }
|
|
func TestSyncProgress64Full(t *testing.T) { testSyncProgress(t, 64, FullSync) }
|
|
func TestSyncProgress64Fast(t *testing.T) { testSyncProgress(t, 64, FastSync) }
|
|
func TestSyncProgress64Light(t *testing.T) { testSyncProgress(t, 64, LightSync) }
|
|
|
|
func testSyncProgress(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
chain := testChainBase.shorten(blockCacheItems - 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(chain.len()/2))
|
|
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(chain.len()/2 - 1),
|
|
})
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Synchronise all the blocks and check continuation progress
|
|
tester.newPeer("peer-full", protocol, chain)
|
|
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(chain.len()/2 - 1),
|
|
CurrentBlock: uint64(chain.len()/2 - 1),
|
|
HighestBlock: uint64(chain.len() - 1),
|
|
})
|
|
|
|
// Check final progress after successful sync
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
StartingBlock: uint64(chain.len()/2 - 1),
|
|
CurrentBlock: uint64(chain.len() - 1),
|
|
HighestBlock: uint64(chain.len() - 1),
|
|
})
|
|
}
|
|
|
|
func checkProgress(t *testing.T, d *Downloader, stage string, want ethereum.SyncProgress) {
|
|
t.Helper()
|
|
p := d.Progress()
|
|
p.KnownStates, p.PulledStates = 0, 0
|
|
want.KnownStates, want.PulledStates = 0, 0
|
|
if p != want {
|
|
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 TestForkedSyncProgress62(t *testing.T) { testForkedSyncProgress(t, 62, FullSync) }
|
|
func TestForkedSyncProgress63Full(t *testing.T) { testForkedSyncProgress(t, 63, FullSync) }
|
|
func TestForkedSyncProgress63Fast(t *testing.T) { testForkedSyncProgress(t, 63, FastSync) }
|
|
func TestForkedSyncProgress64Full(t *testing.T) { testForkedSyncProgress(t, 64, FullSync) }
|
|
func TestForkedSyncProgress64Fast(t *testing.T) { testForkedSyncProgress(t, 64, FastSync) }
|
|
func TestForkedSyncProgress64Light(t *testing.T) { testForkedSyncProgress(t, 64, LightSync) }
|
|
|
|
func testForkedSyncProgress(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
chainA := testChainForkLightA.shorten(testChainBase.len() + MaxHashFetch)
|
|
chainB := testChainForkLightB.shorten(testChainBase.len() + MaxHashFetch)
|
|
|
|
// 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)
|
|
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(chainA.len() - 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)
|
|
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(testChainBase.len()) - 1,
|
|
CurrentBlock: uint64(chainA.len() - 1),
|
|
HighestBlock: uint64(chainB.len() - 1),
|
|
})
|
|
|
|
// Check final progress after successful sync
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
StartingBlock: uint64(testChainBase.len()) - 1,
|
|
CurrentBlock: uint64(chainB.len() - 1),
|
|
HighestBlock: uint64(chainB.len() - 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 TestFailedSyncProgress62(t *testing.T) { testFailedSyncProgress(t, 62, FullSync) }
|
|
func TestFailedSyncProgress63Full(t *testing.T) { testFailedSyncProgress(t, 63, FullSync) }
|
|
func TestFailedSyncProgress63Fast(t *testing.T) { testFailedSyncProgress(t, 63, FastSync) }
|
|
func TestFailedSyncProgress64Full(t *testing.T) { testFailedSyncProgress(t, 64, FullSync) }
|
|
func TestFailedSyncProgress64Fast(t *testing.T) { testFailedSyncProgress(t, 64, FastSync) }
|
|
func TestFailedSyncProgress64Light(t *testing.T) { testFailedSyncProgress(t, 64, LightSync) }
|
|
|
|
func testFailedSyncProgress(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
chain := testChainBase.shorten(blockCacheItems - 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
|
|
brokenChain := chain.shorten(chain.len())
|
|
missing := brokenChain.len() / 2
|
|
delete(brokenChain.headerm, brokenChain.chain[missing])
|
|
delete(brokenChain.blockm, brokenChain.chain[missing])
|
|
delete(brokenChain.receiptm, brokenChain.chain[missing])
|
|
tester.newPeer("faulty", protocol, brokenChain)
|
|
|
|
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(brokenChain.len() - 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)
|
|
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(chain.len() - 1),
|
|
HighestBlock: uint64(chain.len() - 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 TestFakedSyncProgress62(t *testing.T) { testFakedSyncProgress(t, 62, FullSync) }
|
|
func TestFakedSyncProgress63Full(t *testing.T) { testFakedSyncProgress(t, 63, FullSync) }
|
|
func TestFakedSyncProgress63Fast(t *testing.T) { testFakedSyncProgress(t, 63, FastSync) }
|
|
func TestFakedSyncProgress64Full(t *testing.T) { testFakedSyncProgress(t, 64, FullSync) }
|
|
func TestFakedSyncProgress64Fast(t *testing.T) { testFakedSyncProgress(t, 64, FastSync) }
|
|
func TestFakedSyncProgress64Light(t *testing.T) { testFakedSyncProgress(t, 64, LightSync) }
|
|
|
|
func testFakedSyncProgress(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
chain := testChainBase.shorten(blockCacheItems - 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.
|
|
brokenChain := chain.shorten(chain.len())
|
|
numMissing := 5
|
|
for i := brokenChain.len() - 2; i > brokenChain.len()-numMissing; i-- {
|
|
delete(brokenChain.headerm, brokenChain.chain[i])
|
|
}
|
|
tester.newPeer("attack", protocol, brokenChain)
|
|
|
|
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(brokenChain.len() - 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(chain.len() - numMissing)
|
|
tester.newPeer("valid", protocol, validChain)
|
|
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(validChain.len() - 1),
|
|
})
|
|
|
|
// Check final progress after successful sync.
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
checkProgress(t, tester.downloader, "final", ethereum.SyncProgress{
|
|
CurrentBlock: uint64(validChain.len() - 1),
|
|
HighestBlock: uint64(validChain.len() - 1),
|
|
})
|
|
}
|
|
|
|
// This test reproduces an issue where unexpected deliveries would
|
|
// block indefinitely if they arrived at the right time.
|
|
func TestDeliverHeadersHang(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
testCases := []struct {
|
|
protocol int
|
|
syncMode SyncMode
|
|
}{
|
|
{62, FullSync},
|
|
{63, FullSync},
|
|
{63, FastSync},
|
|
{64, FullSync},
|
|
{64, FastSync},
|
|
{64, LightSync},
|
|
}
|
|
for _, tc := range testCases {
|
|
t.Run(fmt.Sprintf("protocol %d mode %v", tc.protocol, tc.syncMode), func(t *testing.T) {
|
|
t.Parallel()
|
|
testDeliverHeadersHang(t, tc.protocol, tc.syncMode)
|
|
})
|
|
}
|
|
}
|
|
|
|
func testDeliverHeadersHang(t *testing.T, protocol int, mode SyncMode) {
|
|
master := newTester()
|
|
defer master.terminate()
|
|
chain := testChainBase.shorten(15)
|
|
|
|
for i := 0; i < 200; i++ {
|
|
tester := newTester()
|
|
tester.peerDb = master.peerDb
|
|
tester.newPeer("peer", protocol, chain)
|
|
|
|
// Whenever the downloader requests headers, flood it with
|
|
// a lot of unrequested header deliveries.
|
|
tester.downloader.peers.peers["peer"].peer = &floodingTestPeer{
|
|
peer: tester.downloader.peers.peers["peer"].peer,
|
|
tester: tester,
|
|
}
|
|
if err := tester.sync("peer", nil, mode); err != nil {
|
|
t.Errorf("test %d: sync failed: %v", i, err)
|
|
}
|
|
tester.terminate()
|
|
}
|
|
}
|
|
|
|
type floodingTestPeer struct {
|
|
peer Peer
|
|
tester *downloadTester
|
|
}
|
|
|
|
func (ftp *floodingTestPeer) Head() (common.Hash, *big.Int) { return ftp.peer.Head() }
|
|
func (ftp *floodingTestPeer) RequestHeadersByHash(hash common.Hash, count int, skip int, reverse bool) error {
|
|
return ftp.peer.RequestHeadersByHash(hash, count, skip, reverse)
|
|
}
|
|
func (ftp *floodingTestPeer) RequestBodies(hashes []common.Hash) error {
|
|
return ftp.peer.RequestBodies(hashes)
|
|
}
|
|
func (ftp *floodingTestPeer) RequestReceipts(hashes []common.Hash) error {
|
|
return ftp.peer.RequestReceipts(hashes)
|
|
}
|
|
func (ftp *floodingTestPeer) RequestNodeData(hashes []common.Hash) error {
|
|
return ftp.peer.RequestNodeData(hashes)
|
|
}
|
|
|
|
func (ftp *floodingTestPeer) RequestHeadersByNumber(from uint64, count, skip int, reverse bool) error {
|
|
deliveriesDone := make(chan struct{}, 500)
|
|
for i := 0; i < cap(deliveriesDone)-1; i++ {
|
|
peer := fmt.Sprintf("fake-peer%d", i)
|
|
go func() {
|
|
ftp.tester.downloader.DeliverHeaders(peer, []*types.Header{{}, {}, {}, {}})
|
|
deliveriesDone <- struct{}{}
|
|
}()
|
|
}
|
|
|
|
// None of the extra deliveries should block.
|
|
timeout := time.After(60 * time.Second)
|
|
launched := false
|
|
for i := 0; i < cap(deliveriesDone); i++ {
|
|
select {
|
|
case <-deliveriesDone:
|
|
if !launched {
|
|
// Start delivering the requested headers
|
|
// after one of the flooding responses has arrived.
|
|
go func() {
|
|
ftp.peer.RequestHeadersByNumber(from, count, skip, reverse)
|
|
deliveriesDone <- struct{}{}
|
|
}()
|
|
launched = true
|
|
}
|
|
case <-timeout:
|
|
panic("blocked")
|
|
}
|
|
}
|
|
return nil
|
|
}
|