1756 lines
72 KiB
Go
1756 lines
72 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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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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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/params"
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"github.com/ethereum/go-ethereum/trie"
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)
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var (
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testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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testAddress = crypto.PubkeyToAddress(testKey.PublicKey)
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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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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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peerHashes map[string][]common.Hash // Hash chain belonging to different test peers
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peerHeaders map[string]map[common.Hash]*types.Header // Headers belonging to different test peers
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peerBlocks map[string]map[common.Hash]*types.Block // Blocks belonging to different test peers
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peerReceipts map[string]map[common.Hash]types.Receipts // Receipts belonging to different test peers
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peerChainTds map[string]map[common.Hash]*big.Int // Total difficulties of the blocks in the peer chains
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peerMissingStates map[string]map[common.Hash]bool // State entries that fast sync should not return
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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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testdb := ethdb.NewMemDatabase()
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genesis := core.GenesisBlockForTesting(testdb, testAddress, big.NewInt(1000000000))
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tester := &downloadTester{
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genesis: genesis,
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peerDb: testdb,
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ownHashes: []common.Hash{genesis.Hash()},
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ownHeaders: map[common.Hash]*types.Header{genesis.Hash(): genesis.Header()},
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ownBlocks: map[common.Hash]*types.Block{genesis.Hash(): genesis},
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ownReceipts: map[common.Hash]types.Receipts{genesis.Hash(): nil},
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ownChainTd: map[common.Hash]*big.Int{genesis.Hash(): genesis.Difficulty()},
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peerHashes: make(map[string][]common.Hash),
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peerHeaders: make(map[string]map[common.Hash]*types.Header),
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peerBlocks: make(map[string]map[common.Hash]*types.Block),
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peerReceipts: make(map[string]map[common.Hash]types.Receipts),
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peerChainTds: make(map[string]map[common.Hash]*big.Int),
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peerMissingStates: make(map[string]map[common.Hash]bool),
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}
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tester.stateDb = ethdb.NewMemDatabase()
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tester.stateDb.Put(genesis.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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// makeChain creates a chain of n blocks starting at and including parent.
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// the returned hash chain is ordered head->parent. In addition, every 3rd block
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// contains a transaction and every 5th an uncle to allow testing correct block
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// reassembly.
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func (dl *downloadTester) makeChain(n int, seed byte, parent *types.Block, parentReceipts types.Receipts, heavy bool) ([]common.Hash, map[common.Hash]*types.Header, map[common.Hash]*types.Block, map[common.Hash]types.Receipts) {
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// Generate the block chain
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blocks, receipts := core.GenerateChain(params.TestChainConfig, parent, ethash.NewFaker(), dl.peerDb, n, func(i int, block *core.BlockGen) {
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block.SetCoinbase(common.Address{seed})
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// If a heavy chain is requested, delay blocks to raise difficulty
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if heavy {
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block.OffsetTime(-1)
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}
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// If the block number is multiple of 3, send a bonus transaction to the miner
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if parent == dl.genesis && i%3 == 0 {
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signer := types.MakeSigner(params.TestChainConfig, block.Number())
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tx, err := types.SignTx(types.NewTransaction(block.TxNonce(testAddress), common.Address{seed}, big.NewInt(1000), params.TxGas, nil, nil), signer, testKey)
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if err != nil {
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panic(err)
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}
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block.AddTx(tx)
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}
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// If the block number is a multiple of 5, add a bonus uncle to the block
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if i > 0 && i%5 == 0 {
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block.AddUncle(&types.Header{
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ParentHash: block.PrevBlock(i - 1).Hash(),
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Number: big.NewInt(block.Number().Int64() - 1),
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})
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}
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})
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// Convert the block-chain into a hash-chain and header/block maps
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hashes := make([]common.Hash, n+1)
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hashes[len(hashes)-1] = parent.Hash()
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headerm := make(map[common.Hash]*types.Header, n+1)
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headerm[parent.Hash()] = parent.Header()
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blockm := make(map[common.Hash]*types.Block, n+1)
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blockm[parent.Hash()] = parent
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receiptm := make(map[common.Hash]types.Receipts, n+1)
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receiptm[parent.Hash()] = parentReceipts
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for i, b := range blocks {
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hashes[len(hashes)-i-2] = b.Hash()
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headerm[b.Hash()] = b.Header()
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blockm[b.Hash()] = b
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receiptm[b.Hash()] = receipts[i]
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}
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return hashes, headerm, blockm, receiptm
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}
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// makeChainFork creates two chains of length n, such that h1[:f] and
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// h2[:f] are different but have a common suffix of length n-f.
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func (dl *downloadTester) makeChainFork(n, f int, parent *types.Block, parentReceipts types.Receipts, balanced bool) ([]common.Hash, []common.Hash, map[common.Hash]*types.Header, map[common.Hash]*types.Header, map[common.Hash]*types.Block, map[common.Hash]*types.Block, map[common.Hash]types.Receipts, map[common.Hash]types.Receipts) {
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// Create the common suffix
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hashes, headers, blocks, receipts := dl.makeChain(n-f, 0, parent, parentReceipts, false)
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// Create the forks, making the second heavier if non balanced forks were requested
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hashes1, headers1, blocks1, receipts1 := dl.makeChain(f, 1, blocks[hashes[0]], receipts[hashes[0]], false)
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hashes1 = append(hashes1, hashes[1:]...)
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heavy := false
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if !balanced {
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heavy = true
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}
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hashes2, headers2, blocks2, receipts2 := dl.makeChain(f, 2, blocks[hashes[0]], receipts[hashes[0]], heavy)
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hashes2 = append(hashes2, hashes[1:]...)
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for hash, header := range headers {
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headers1[hash] = header
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headers2[hash] = header
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}
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for hash, block := range blocks {
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blocks1[hash] = block
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blocks2[hash] = block
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}
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for hash, receipt := range receipts {
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receipts1[hash] = receipt
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receipts2[hash] = receipt
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}
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return hashes1, hashes2, headers1, headers2, blocks1, blocks2, receipts1, receipts2
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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.peerHashes[id][0]
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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 = big.NewInt(1)
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if diff, ok := dl.peerChainTds[id][hash]; ok {
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td = diff
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}
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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) (int, 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) (int, 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) (int, 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, hashes []common.Hash, headers map[common.Hash]*types.Header, blocks map[common.Hash]*types.Block, receipts map[common.Hash]types.Receipts) error {
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return dl.newSlowPeer(id, version, hashes, headers, blocks, receipts, 0)
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}
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// newSlowPeer registers a new block download source into the downloader, with a
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// specific delay time on processing the network packets sent to it, simulating
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// potentially slow network IO.
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func (dl *downloadTester) newSlowPeer(id string, version int, hashes []common.Hash, headers map[common.Hash]*types.Header, blocks map[common.Hash]*types.Block, receipts map[common.Hash]types.Receipts, delay time.Duration) error {
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dl.lock.Lock()
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defer dl.lock.Unlock()
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var err = dl.downloader.RegisterPeer(id, version, &downloadTesterPeer{dl: dl, id: id, delay: delay})
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if err == nil {
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// Assign the owned hashes, headers and blocks to the peer (deep copy)
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dl.peerHashes[id] = make([]common.Hash, len(hashes))
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copy(dl.peerHashes[id], hashes)
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dl.peerHeaders[id] = make(map[common.Hash]*types.Header)
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dl.peerBlocks[id] = make(map[common.Hash]*types.Block)
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dl.peerReceipts[id] = make(map[common.Hash]types.Receipts)
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dl.peerChainTds[id] = make(map[common.Hash]*big.Int)
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dl.peerMissingStates[id] = make(map[common.Hash]bool)
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genesis := hashes[len(hashes)-1]
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if header := headers[genesis]; header != nil {
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dl.peerHeaders[id][genesis] = header
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dl.peerChainTds[id][genesis] = header.Difficulty
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}
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if block := blocks[genesis]; block != nil {
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dl.peerBlocks[id][genesis] = block
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dl.peerChainTds[id][genesis] = block.Difficulty()
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}
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for i := len(hashes) - 2; i >= 0; i-- {
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hash := hashes[i]
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if header, ok := headers[hash]; ok {
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dl.peerHeaders[id][hash] = header
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if _, ok := dl.peerHeaders[id][header.ParentHash]; ok {
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dl.peerChainTds[id][hash] = new(big.Int).Add(header.Difficulty, dl.peerChainTds[id][header.ParentHash])
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}
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}
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if block, ok := blocks[hash]; ok {
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dl.peerBlocks[id][hash] = block
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if _, ok := dl.peerBlocks[id][block.ParentHash()]; ok {
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dl.peerChainTds[id][hash] = new(big.Int).Add(block.Difficulty(), dl.peerChainTds[id][block.ParentHash()])
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}
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|
}
|
|
if receipt, ok := receipts[hash]; ok {
|
|
dl.peerReceipts[id][hash] = receipt
|
|
}
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
|
|
// 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.peerHashes, id)
|
|
delete(dl.peerHeaders, id)
|
|
delete(dl.peerBlocks, id)
|
|
delete(dl.peerChainTds, id)
|
|
|
|
dl.downloader.UnregisterPeer(id)
|
|
}
|
|
|
|
type downloadTesterPeer struct {
|
|
dl *downloadTester
|
|
id string
|
|
delay time.Duration
|
|
lock sync.RWMutex
|
|
}
|
|
|
|
// setDelay is a thread safe setter for the network delay value.
|
|
func (dlp *downloadTesterPeer) setDelay(delay time.Duration) {
|
|
dlp.lock.Lock()
|
|
defer dlp.lock.Unlock()
|
|
|
|
dlp.delay = delay
|
|
}
|
|
|
|
// waitDelay is a thread safe way to sleep for the configured time.
|
|
func (dlp *downloadTesterPeer) waitDelay() {
|
|
dlp.lock.RLock()
|
|
delay := dlp.delay
|
|
dlp.lock.RUnlock()
|
|
|
|
time.Sleep(delay)
|
|
}
|
|
|
|
// Head constructs a function to retrieve a peer's current head hash
|
|
// and total difficulty.
|
|
func (dlp *downloadTesterPeer) Head() (common.Hash, *big.Int) {
|
|
dlp.dl.lock.RLock()
|
|
defer dlp.dl.lock.RUnlock()
|
|
|
|
return dlp.dl.peerHashes[dlp.id][0], nil
|
|
}
|
|
|
|
// 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) error {
|
|
// Find the canonical number of the hash
|
|
dlp.dl.lock.RLock()
|
|
number := uint64(0)
|
|
for num, hash := range dlp.dl.peerHashes[dlp.id] {
|
|
if hash == origin {
|
|
number = uint64(len(dlp.dl.peerHashes[dlp.id]) - num - 1)
|
|
break
|
|
}
|
|
}
|
|
dlp.dl.lock.RUnlock()
|
|
|
|
// Use the absolute header fetcher to satisfy the query
|
|
return dlp.RequestHeadersByNumber(number, amount, skip, reverse)
|
|
}
|
|
|
|
// 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) error {
|
|
dlp.waitDelay()
|
|
|
|
dlp.dl.lock.RLock()
|
|
defer dlp.dl.lock.RUnlock()
|
|
|
|
// Gather the next batch of headers
|
|
hashes := dlp.dl.peerHashes[dlp.id]
|
|
headers := dlp.dl.peerHeaders[dlp.id]
|
|
result := make([]*types.Header, 0, amount)
|
|
for i := 0; i < amount && len(hashes)-int(origin)-1-i*(skip+1) >= 0; i++ {
|
|
if header, ok := headers[hashes[len(hashes)-int(origin)-1-i*(skip+1)]]; ok {
|
|
result = append(result, header)
|
|
}
|
|
}
|
|
// Delay delivery a bit to allow attacks to unfold
|
|
go func() {
|
|
time.Sleep(time.Millisecond)
|
|
dlp.dl.downloader.DeliverHeaders(dlp.id, result)
|
|
}()
|
|
return 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) error {
|
|
dlp.waitDelay()
|
|
|
|
dlp.dl.lock.RLock()
|
|
defer dlp.dl.lock.RUnlock()
|
|
|
|
blocks := dlp.dl.peerBlocks[dlp.id]
|
|
|
|
transactions := make([][]*types.Transaction, 0, len(hashes))
|
|
uncles := make([][]*types.Header, 0, len(hashes))
|
|
|
|
for _, hash := range hashes {
|
|
if block, ok := blocks[hash]; ok {
|
|
transactions = append(transactions, block.Transactions())
|
|
uncles = append(uncles, block.Uncles())
|
|
}
|
|
}
|
|
go dlp.dl.downloader.DeliverBodies(dlp.id, transactions, uncles)
|
|
|
|
return 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) error {
|
|
dlp.waitDelay()
|
|
|
|
dlp.dl.lock.RLock()
|
|
defer dlp.dl.lock.RUnlock()
|
|
|
|
receipts := dlp.dl.peerReceipts[dlp.id]
|
|
|
|
results := make([][]*types.Receipt, 0, len(hashes))
|
|
for _, hash := range hashes {
|
|
if receipt, ok := receipts[hash]; ok {
|
|
results = append(results, receipt)
|
|
}
|
|
}
|
|
go dlp.dl.downloader.DeliverReceipts(dlp.id, results)
|
|
|
|
return nil
|
|
}
|
|
|
|
// RequestNodeData constructs a getNodeData method associated with a particular
|
|
// peer in the download tester. The returned function can be used to retrieve
|
|
// batches of node state data from the particularly requested peer.
|
|
func (dlp *downloadTesterPeer) RequestNodeData(hashes []common.Hash) error {
|
|
dlp.waitDelay()
|
|
|
|
dlp.dl.lock.RLock()
|
|
defer dlp.dl.lock.RUnlock()
|
|
|
|
results := make([][]byte, 0, len(hashes))
|
|
for _, hash := range hashes {
|
|
if data, err := dlp.dl.peerDb.Get(hash.Bytes()); err == nil {
|
|
if !dlp.dl.peerMissingStates[dlp.id][hash] {
|
|
results = append(results, data)
|
|
}
|
|
}
|
|
}
|
|
go dlp.dl.downloader.DeliverNodeData(dlp.id, results)
|
|
|
|
return nil
|
|
}
|
|
|
|
// 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) {
|
|
assertOwnForkedChain(t, tester, 1, []int{length})
|
|
}
|
|
|
|
// assertOwnForkedChain checks if the local forked chain contains the correct
|
|
// number of items of the various chain components.
|
|
func assertOwnForkedChain(t *testing.T, tester *downloadTester, common int, lengths []int) {
|
|
// Initialize the counters for the first fork
|
|
headers, blocks, receipts := lengths[0], lengths[0], lengths[0]-fsMinFullBlocks
|
|
|
|
if receipts < 0 {
|
|
receipts = 1
|
|
}
|
|
// Update the counters for each subsequent fork
|
|
for _, length := range lengths[1:] {
|
|
headers += length - common
|
|
blocks += length - common
|
|
receipts += length - common - fsMinFullBlocks
|
|
}
|
|
switch tester.downloader.mode {
|
|
case FullSync:
|
|
receipts = 1
|
|
case LightSync:
|
|
blocks, receipts = 1, 1
|
|
}
|
|
if hs := len(tester.ownHeaders); hs != headers {
|
|
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, headers)
|
|
}
|
|
if bs := len(tester.ownBlocks); bs != blocks {
|
|
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, blocks)
|
|
}
|
|
if rs := len(tester.ownReceipts); rs != receipts {
|
|
t.Fatalf("synchronised receipts mismatch: have %v, want %v", rs, receipts)
|
|
}
|
|
// Verify the state trie too for fast syncs
|
|
/*if tester.downloader.mode == FastSync {
|
|
pivot := uint64(0)
|
|
var index int
|
|
if pivot := int(tester.downloader.queue.fastSyncPivot); pivot < common {
|
|
index = pivot
|
|
} else {
|
|
index = len(tester.ownHashes) - lengths[len(lengths)-1] + int(tester.downloader.queue.fastSyncPivot)
|
|
}
|
|
if index > 0 {
|
|
if statedb, err := state.New(tester.ownHeaders[tester.ownHashes[index]].Root, state.NewDatabase(trie.NewDatabase(tester.stateDb))); statedb == nil || err != nil {
|
|
t.Fatalf("state reconstruction failed: %v", err)
|
|
}
|
|
}
|
|
}*/
|
|
}
|
|
|
|
// Tests that simple synchronization against a canonical chain works correctly.
|
|
// In this test common ancestor lookup should be short circuited and not require
|
|
// binary searching.
|
|
func TestCanonicalSynchronisation62(t *testing.T) { testCanonicalSynchronisation(t, 62, FullSync) }
|
|
func TestCanonicalSynchronisation63Full(t *testing.T) { testCanonicalSynchronisation(t, 63, FullSync) }
|
|
func TestCanonicalSynchronisation63Fast(t *testing.T) { testCanonicalSynchronisation(t, 63, FastSync) }
|
|
func TestCanonicalSynchronisation64Full(t *testing.T) { testCanonicalSynchronisation(t, 64, FullSync) }
|
|
func TestCanonicalSynchronisation64Fast(t *testing.T) { testCanonicalSynchronisation(t, 64, FastSync) }
|
|
func TestCanonicalSynchronisation64Light(t *testing.T) { testCanonicalSynchronisation(t, 64, LightSync) }
|
|
|
|
func testCanonicalSynchronisation(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// Create a small enough block chain to download
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
|
|
|
|
// 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, targetBlocks+1)
|
|
}
|
|
|
|
// Tests that if a large batch of blocks are being downloaded, it is throttled
|
|
// until the cached blocks are retrieved.
|
|
func TestThrottling62(t *testing.T) { testThrottling(t, 62, FullSync) }
|
|
func TestThrottling63Full(t *testing.T) { testThrottling(t, 63, FullSync) }
|
|
func TestThrottling63Fast(t *testing.T) { testThrottling(t, 63, FastSync) }
|
|
func TestThrottling64Full(t *testing.T) { testThrottling(t, 64, FullSync) }
|
|
func TestThrottling64Fast(t *testing.T) { testThrottling(t, 64, FastSync) }
|
|
|
|
func testThrottling(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
tester := newTester()
|
|
defer tester.terminate()
|
|
|
|
// Create a long block chain to download and the tester
|
|
targetBlocks := 8 * blockCacheItems
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
|
|
|
|
// 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 {
|
|
//if tester.downloader.queue.resultCache[receipts].Header.Number.Uint64() < tester.downloader.queue.fastSyncPivot {
|
|
cached = receipts
|
|
//}
|
|
}
|
|
}
|
|
frozen = int(atomic.LoadUint32(&blocked))
|
|
retrieved = len(tester.ownBlocks)
|
|
tester.downloader.queue.lock.Unlock()
|
|
tester.lock.Unlock()
|
|
|
|
if cached == blockCacheItems || retrieved+cached+frozen == targetBlocks+1 {
|
|
break
|
|
}
|
|
}
|
|
// Make sure we filled up the cache, then exhaust it
|
|
time.Sleep(25 * time.Millisecond) // give it a chance to screw up
|
|
|
|
tester.lock.RLock()
|
|
retrieved = len(tester.ownBlocks)
|
|
tester.lock.RUnlock()
|
|
if cached != blockCacheItems && retrieved+cached+frozen != targetBlocks+1 {
|
|
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()
|
|
|
|
// Create a long enough forked chain
|
|
common, fork := MaxHashFetch, 2*MaxHashFetch
|
|
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := tester.makeChainFork(common+fork, fork, tester.genesis, nil, true)
|
|
|
|
tester.newPeer("fork A", protocol, hashesA, headersA, blocksA, receiptsA)
|
|
tester.newPeer("fork B", protocol, hashesB, headersB, blocksB, receiptsB)
|
|
|
|
// 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, common+fork+1)
|
|
|
|
// 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, common+1, []int{common + fork + 1, common + fork + 1})
|
|
}
|
|
|
|
// 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()
|
|
|
|
// Create a long enough forked chain
|
|
common, fork := MaxHashFetch, 4*MaxHashFetch
|
|
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := tester.makeChainFork(common+fork, fork, tester.genesis, nil, false)
|
|
|
|
tester.newPeer("light", protocol, hashesA, headersA, blocksA, receiptsA)
|
|
tester.newPeer("heavy", protocol, hashesB[fork/2:], headersB, blocksB, receiptsB)
|
|
|
|
// 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, common+fork+1)
|
|
|
|
// 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, common+1, []int{common + fork + 1, common + fork/2 + 1})
|
|
}
|
|
|
|
// 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()
|
|
|
|
// Create a long enough forked chain
|
|
common, fork := 13, int(MaxForkAncestry+17)
|
|
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := tester.makeChainFork(common+fork, fork, tester.genesis, nil, true)
|
|
|
|
tester.newPeer("original", protocol, hashesA, headersA, blocksA, receiptsA)
|
|
tester.newPeer("rewriter", protocol, hashesB, headersB, blocksB, receiptsB)
|
|
|
|
// 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, common+fork+1)
|
|
|
|
// 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
|
|
common, fork := 13, int(MaxForkAncestry+17)
|
|
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := tester.makeChainFork(common+fork, fork, tester.genesis, nil, false)
|
|
|
|
tester.newPeer("original", protocol, hashesA, headersA, blocksA, receiptsA)
|
|
tester.newPeer("heavy-rewriter", protocol, hashesB[MaxForkAncestry-17:], headersB, blocksB, receiptsB) // Root the fork below the ancestor limit
|
|
|
|
// 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, common+fork+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 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()
|
|
|
|
// Create a small enough block chain to download and the tester
|
|
targetBlocks := blockCacheItems - 15
|
|
if targetBlocks >= MaxHashFetch {
|
|
targetBlocks = MaxHashFetch - 15
|
|
}
|
|
if targetBlocks >= MaxHeaderFetch {
|
|
targetBlocks = MaxHeaderFetch - 15
|
|
}
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
|
|
|
|
// 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
|
|
targetBlocks := targetPeers*blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
for i := 0; i < targetPeers; i++ {
|
|
id := fmt.Sprintf("peer #%d", i)
|
|
tester.newPeer(id, protocol, hashes[i*blockCacheItems:], headers, blocks, receipts)
|
|
}
|
|
if err := tester.sync("peer #0", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, targetBlocks+1)
|
|
}
|
|
|
|
// 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
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
// Create peers of every type
|
|
tester.newPeer("peer 62", 62, hashes, headers, blocks, nil)
|
|
tester.newPeer("peer 63", 63, hashes, headers, blocks, receipts)
|
|
tester.newPeer("peer 64", 64, hashes, headers, blocks, receipts)
|
|
|
|
// 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, targetBlocks+1)
|
|
|
|
// Check that no peers have been dropped off
|
|
for _, version := range []int{62, 63, 64} {
|
|
peer := fmt.Sprintf("peer %d", version)
|
|
if _, ok := tester.peerHashes[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
|
|
targetBlocks := 2*blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
|
|
|
|
// 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, targetBlocks+1)
|
|
|
|
// Validate the number of block bodies that should have been requested
|
|
bodiesNeeded, receiptsNeeded := 0, 0
|
|
for _, block := range blocks {
|
|
if mode != LightSync && block != tester.genesis && (len(block.Transactions()) > 0 || len(block.Uncles()) > 0) {
|
|
bodiesNeeded++
|
|
}
|
|
}
|
|
for _, receipt := range receipts {
|
|
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()
|
|
|
|
// Create a small enough block chain to download
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
// Attempt a full sync with an attacker feeding gapped headers
|
|
tester.newPeer("attack", protocol, hashes, headers, blocks, receipts)
|
|
missing := targetBlocks / 2
|
|
delete(tester.peerHeaders["attack"], hashes[missing])
|
|
|
|
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, hashes, headers, blocks, receipts)
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, targetBlocks+1)
|
|
}
|
|
|
|
// 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()
|
|
|
|
// Create a small enough block chain to download
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
// Attempt a full sync with an attacker feeding shifted headers
|
|
tester.newPeer("attack", protocol, hashes, headers, blocks, receipts)
|
|
delete(tester.peerHeaders["attack"], hashes[len(hashes)-2])
|
|
delete(tester.peerBlocks["attack"], hashes[len(hashes)-2])
|
|
delete(tester.peerReceipts["attack"], hashes[len(hashes)-2])
|
|
|
|
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, hashes, headers, blocks, receipts)
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
assertOwnChain(t, tester, targetBlocks+1)
|
|
}
|
|
|
|
// 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
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
// 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.
|
|
tester.newPeer("fast-attack", protocol, hashes, headers, blocks, receipts)
|
|
missing := fsHeaderSafetyNet + MaxHeaderFetch + 1
|
|
delete(tester.peerHeaders["fast-attack"], hashes[len(hashes)-missing])
|
|
|
|
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.
|
|
tester.newPeer("block-attack", protocol, hashes, headers, blocks, receipts)
|
|
missing = 3*fsHeaderSafetyNet + MaxHeaderFetch + 1
|
|
delete(tester.peerHeaders["fast-attack"], hashes[len(hashes)-missing]) // Make sure the fast-attacker doesn't fill in
|
|
delete(tester.peerHeaders["block-attack"], hashes[len(hashes)-missing])
|
|
|
|
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.
|
|
tester.newPeer("withhold-attack", protocol, hashes, headers, blocks, receipts)
|
|
missing = 3*fsHeaderSafetyNet + MaxHeaderFetch + 1
|
|
|
|
tester.downloader.syncInitHook = func(uint64, uint64) {
|
|
for i := missing; i <= len(hashes); i++ {
|
|
delete(tester.peerHeaders["withhold-attack"], hashes[len(hashes)-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, hashes, headers, blocks, receipts)
|
|
if err := tester.sync("valid", nil, mode); err != nil {
|
|
t.Fatalf("failed to synchronise blocks: %v", err)
|
|
}
|
|
if hs := len(tester.ownHeaders); hs != len(headers) {
|
|
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, len(headers))
|
|
}
|
|
if mode != LightSync {
|
|
if bs := len(tester.ownBlocks); bs != len(blocks) {
|
|
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, len(blocks))
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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()
|
|
|
|
hashes, headers, blocks, receipts := tester.makeChain(0, 0, tester.genesis, nil, false)
|
|
tester.newPeer("attack", protocol, []common.Hash{hashes[0]}, headers, blocks, receipts)
|
|
|
|
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()
|
|
|
|
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, []common.Hash{tester.genesis.Hash()}, nil, nil, nil); err != nil {
|
|
t.Fatalf("test %d: failed to register new peer: %v", i, err)
|
|
}
|
|
if _, ok := tester.peerHashes[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.peerHashes[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()
|
|
|
|
// Create a small enough block chain to download
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
// 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
|
|
}
|
|
// Retrieve the sync progress and ensure they are zero (pristine sync)
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != 0 {
|
|
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, 0)
|
|
}
|
|
// Synchronise half the blocks and check initial progress
|
|
tester.newPeer("peer-half", protocol, hashes[targetBlocks/2:], headers, blocks, receipts)
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != uint64(targetBlocks/2+1) {
|
|
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, targetBlocks/2+1)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Synchronise all the blocks and check continuation progress
|
|
tester.newPeer("peer-full", protocol, hashes, headers, blocks, receipts)
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != uint64(targetBlocks/2+1) || progress.CurrentBlock != uint64(targetBlocks/2+1) || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Completing progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, targetBlocks/2+1, targetBlocks/2+1, targetBlocks)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Check final progress after successful sync
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != uint64(targetBlocks/2+1) || progress.CurrentBlock != uint64(targetBlocks) || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Final progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, targetBlocks/2+1, targetBlocks, targetBlocks)
|
|
}
|
|
}
|
|
|
|
// 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()
|
|
|
|
// Create a forked chain to simulate origin revertal
|
|
common, fork := MaxHashFetch, 2*MaxHashFetch
|
|
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := tester.makeChainFork(common+fork, fork, tester.genesis, nil, true)
|
|
|
|
// 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
|
|
}
|
|
// Retrieve the sync progress and ensure they are zero (pristine sync)
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != 0 {
|
|
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, 0)
|
|
}
|
|
// Synchronise with one of the forks and check progress
|
|
tester.newPeer("fork A", protocol, hashesA, headersA, blocksA, receiptsA)
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != uint64(len(hashesA)-1) {
|
|
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, len(hashesA)-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, hashesB, headersB, blocksB, receiptsB)
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != uint64(common) || progress.CurrentBlock != uint64(len(hashesA)-1) || progress.HighestBlock != uint64(len(hashesB)-1) {
|
|
t.Fatalf("Forking progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, common, len(hashesA)-1, len(hashesB)-1)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Check final progress after successful sync
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != uint64(common) || progress.CurrentBlock != uint64(len(hashesB)-1) || progress.HighestBlock != uint64(len(hashesB)-1) {
|
|
t.Fatalf("Final progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, common, len(hashesB)-1, len(hashesB)-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()
|
|
|
|
// Create a small enough block chain to download
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks, 0, tester.genesis, nil, false)
|
|
|
|
// 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
|
|
}
|
|
// Retrieve the sync progress and ensure they are zero (pristine sync)
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != 0 {
|
|
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, 0)
|
|
}
|
|
// Attempt a full sync with a faulty peer
|
|
tester.newPeer("faulty", protocol, hashes, headers, blocks, receipts)
|
|
missing := targetBlocks / 2
|
|
delete(tester.peerHeaders["faulty"], hashes[missing])
|
|
delete(tester.peerBlocks["faulty"], hashes[missing])
|
|
delete(tester.peerReceipts["faulty"], hashes[missing])
|
|
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, targetBlocks)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Synchronise with a good peer and check that the progress origin remind the same after a failure
|
|
tester.newPeer("valid", protocol, hashes, headers, blocks, receipts)
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock > uint64(targetBlocks/2) || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Completing progress mismatch: have %v/%v/%v, want %v/0-%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, targetBlocks/2, targetBlocks)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Check final progress after successful sync
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock > uint64(targetBlocks/2) || progress.CurrentBlock != uint64(targetBlocks) || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Final progress mismatch: have %v/%v/%v, want 0-%v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, targetBlocks/2, targetBlocks, targetBlocks)
|
|
}
|
|
}
|
|
|
|
// 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()
|
|
|
|
// Create a small block chain
|
|
targetBlocks := blockCacheItems - 15
|
|
hashes, headers, blocks, receipts := tester.makeChain(targetBlocks+3, 0, tester.genesis, nil, false)
|
|
|
|
// 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
|
|
}
|
|
// Retrieve the sync progress and ensure they are zero (pristine sync)
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != 0 {
|
|
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, 0)
|
|
}
|
|
// Create and sync with an attacker that promises a higher chain than available
|
|
tester.newPeer("attack", protocol, hashes, headers, blocks, receipts)
|
|
for i := 1; i < 3; i++ {
|
|
delete(tester.peerHeaders["attack"], hashes[i])
|
|
delete(tester.peerBlocks["attack"], hashes[i])
|
|
delete(tester.peerReceipts["attack"], hashes[i])
|
|
}
|
|
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock != 0 || progress.HighestBlock != uint64(targetBlocks+3) {
|
|
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, 0, targetBlocks+3)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Synchronise with a good peer and check that the progress height has been reduced to the true value
|
|
tester.newPeer("valid", protocol, hashes[3:], headers, blocks, receipts)
|
|
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
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock != 0 || progress.CurrentBlock > uint64(targetBlocks) || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Completing progress mismatch: have %v/%v/%v, want %v/0-%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, 0, targetBlocks, targetBlocks)
|
|
}
|
|
progress <- struct{}{}
|
|
pending.Wait()
|
|
|
|
// Check final progress after successful sync
|
|
if progress := tester.downloader.Progress(); progress.StartingBlock > uint64(targetBlocks) || progress.CurrentBlock != uint64(targetBlocks) || progress.HighestBlock != uint64(targetBlocks) {
|
|
t.Fatalf("Final progress mismatch: have %v/%v/%v, want 0-%v/%v/%v", progress.StartingBlock, progress.CurrentBlock, progress.HighestBlock, targetBlocks, targetBlocks, targetBlocks)
|
|
}
|
|
}
|
|
|
|
// This test reproduces an issue where unexpected deliveries would
|
|
// block indefinitely if they arrived at the right time.
|
|
// We use data driven subtests to manage this so that it will be parallel on its own
|
|
// and not with the other tests, avoiding intermittent failures.
|
|
func TestDeliverHeadersHang(t *testing.T) {
|
|
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) {
|
|
testDeliverHeadersHang(t, tc.protocol, tc.syncMode)
|
|
})
|
|
}
|
|
}
|
|
|
|
type floodingTestPeer struct {
|
|
peer Peer
|
|
tester *downloadTester
|
|
pend sync.WaitGroup
|
|
}
|
|
|
|
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); i++ {
|
|
peer := fmt.Sprintf("fake-peer%d", i)
|
|
ftp.pend.Add(1)
|
|
|
|
go func() {
|
|
ftp.tester.downloader.DeliverHeaders(peer, []*types.Header{{}, {}, {}, {}})
|
|
deliveriesDone <- struct{}{}
|
|
ftp.pend.Done()
|
|
}()
|
|
}
|
|
// Deliver the actual requested headers.
|
|
go ftp.peer.RequestHeadersByNumber(from, count, skip, reverse)
|
|
// None of the extra deliveries should block.
|
|
timeout := time.After(60 * time.Second)
|
|
for i := 0; i < cap(deliveriesDone); i++ {
|
|
select {
|
|
case <-deliveriesDone:
|
|
case <-timeout:
|
|
panic("blocked")
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func testDeliverHeadersHang(t *testing.T, protocol int, mode SyncMode) {
|
|
t.Parallel()
|
|
|
|
master := newTester()
|
|
defer master.terminate()
|
|
|
|
hashes, headers, blocks, receipts := master.makeChain(5, 0, master.genesis, nil, false)
|
|
for i := 0; i < 200; i++ {
|
|
tester := newTester()
|
|
tester.peerDb = master.peerDb
|
|
|
|
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
|
|
// 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()
|
|
|
|
// Flush all goroutines to prevent messing with subsequent tests
|
|
tester.downloader.peers.peers["peer"].peer.(*floodingTestPeer).pend.Wait()
|
|
}
|
|
}
|