core, eth: split eth package, implement snap protocol (#21482)
This commit splits the eth package, separating the handling of eth and snap protocols. It also includes the capability to run snap sync (https://github.com/ethereum/devp2p/blob/master/caps/snap.md) , but does not enable it by default. Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de> Co-authored-by: Martin Holst Swende <martin@swende.se>
This commit is contained in:
Péter Szilágyi
GitHub
740
eth/handler_eth_test.go
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740
eth/handler_eth_test.go
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@@ -0,0 +1,740 @@
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// Copyright 2014 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 eth
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import (
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"fmt"
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"math/big"
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"math/rand"
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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/forkid"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/eth/protocols/eth"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/enode"
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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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// testEthHandler is a mock event handler to listen for inbound network requests
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// on the `eth` protocol and convert them into a more easily testable form.
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type testEthHandler struct {
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blockBroadcasts event.Feed
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txAnnounces event.Feed
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txBroadcasts event.Feed
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}
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func (h *testEthHandler) Chain() *core.BlockChain { panic("no backing chain") }
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func (h *testEthHandler) StateBloom() *trie.SyncBloom { panic("no backing state bloom") }
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func (h *testEthHandler) TxPool() eth.TxPool { panic("no backing tx pool") }
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func (h *testEthHandler) AcceptTxs() bool { return true }
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func (h *testEthHandler) RunPeer(*eth.Peer, eth.Handler) error { panic("not used in tests") }
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func (h *testEthHandler) PeerInfo(enode.ID) interface{} { panic("not used in tests") }
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func (h *testEthHandler) Handle(peer *eth.Peer, packet eth.Packet) error {
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switch packet := packet.(type) {
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case *eth.NewBlockPacket:
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h.blockBroadcasts.Send(packet.Block)
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return nil
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case *eth.NewPooledTransactionHashesPacket:
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h.txAnnounces.Send(([]common.Hash)(*packet))
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return nil
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case *eth.TransactionsPacket:
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h.txBroadcasts.Send(([]*types.Transaction)(*packet))
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return nil
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case *eth.PooledTransactionsPacket:
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h.txBroadcasts.Send(([]*types.Transaction)(*packet))
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return nil
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default:
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panic(fmt.Sprintf("unexpected eth packet type in tests: %T", packet))
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}
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}
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// Tests that peers are correctly accepted (or rejected) based on the advertised
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// fork IDs in the protocol handshake.
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func TestForkIDSplit64(t *testing.T) { testForkIDSplit(t, 64) }
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func TestForkIDSplit65(t *testing.T) { testForkIDSplit(t, 65) }
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func testForkIDSplit(t *testing.T, protocol uint) {
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t.Parallel()
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var (
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engine = ethash.NewFaker()
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configNoFork = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(1)}
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configProFork = ¶ms.ChainConfig{
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HomesteadBlock: big.NewInt(1),
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EIP150Block: big.NewInt(2),
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EIP155Block: big.NewInt(2),
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EIP158Block: big.NewInt(2),
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ByzantiumBlock: big.NewInt(3),
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}
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dbNoFork = rawdb.NewMemoryDatabase()
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dbProFork = rawdb.NewMemoryDatabase()
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gspecNoFork = &core.Genesis{Config: configNoFork}
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gspecProFork = &core.Genesis{Config: configProFork}
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genesisNoFork = gspecNoFork.MustCommit(dbNoFork)
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genesisProFork = gspecProFork.MustCommit(dbProFork)
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chainNoFork, _ = core.NewBlockChain(dbNoFork, nil, configNoFork, engine, vm.Config{}, nil, nil)
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chainProFork, _ = core.NewBlockChain(dbProFork, nil, configProFork, engine, vm.Config{}, nil, nil)
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blocksNoFork, _ = core.GenerateChain(configNoFork, genesisNoFork, engine, dbNoFork, 2, nil)
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blocksProFork, _ = core.GenerateChain(configProFork, genesisProFork, engine, dbProFork, 2, nil)
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ethNoFork, _ = newHandler(&handlerConfig{
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Database: dbNoFork,
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Chain: chainNoFork,
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TxPool: newTestTxPool(),
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Network: 1,
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Sync: downloader.FullSync,
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BloomCache: 1,
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})
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ethProFork, _ = newHandler(&handlerConfig{
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Database: dbProFork,
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Chain: chainProFork,
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TxPool: newTestTxPool(),
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Network: 1,
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Sync: downloader.FullSync,
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BloomCache: 1,
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})
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)
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ethNoFork.Start(1000)
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ethProFork.Start(1000)
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// Clean up everything after ourselves
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defer chainNoFork.Stop()
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defer chainProFork.Stop()
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defer ethNoFork.Stop()
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defer ethProFork.Stop()
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// Both nodes should allow the other to connect (same genesis, next fork is the same)
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p2pNoFork, p2pProFork := p2p.MsgPipe()
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defer p2pNoFork.Close()
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defer p2pProFork.Close()
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peerNoFork := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork, nil)
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peerProFork := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork, nil)
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defer peerNoFork.Close()
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defer peerProFork.Close()
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errc := make(chan error, 2)
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go func(errc chan error) {
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errc <- ethNoFork.runEthPeer(peerProFork, func(peer *eth.Peer) error { return nil })
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}(errc)
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go func(errc chan error) {
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errc <- ethProFork.runEthPeer(peerNoFork, func(peer *eth.Peer) error { return nil })
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}(errc)
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for i := 0; i < 2; i++ {
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select {
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case err := <-errc:
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if err != nil {
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t.Fatalf("frontier nofork <-> profork failed: %v", err)
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}
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case <-time.After(250 * time.Millisecond):
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t.Fatalf("frontier nofork <-> profork handler timeout")
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}
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}
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// Progress into Homestead. Fork's match, so we don't care what the future holds
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chainNoFork.InsertChain(blocksNoFork[:1])
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chainProFork.InsertChain(blocksProFork[:1])
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p2pNoFork, p2pProFork = p2p.MsgPipe()
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defer p2pNoFork.Close()
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defer p2pProFork.Close()
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peerNoFork = eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork, nil)
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peerProFork = eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork, nil)
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defer peerNoFork.Close()
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defer peerProFork.Close()
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errc = make(chan error, 2)
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go func(errc chan error) {
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errc <- ethNoFork.runEthPeer(peerProFork, func(peer *eth.Peer) error { return nil })
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}(errc)
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go func(errc chan error) {
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errc <- ethProFork.runEthPeer(peerNoFork, func(peer *eth.Peer) error { return nil })
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}(errc)
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for i := 0; i < 2; i++ {
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select {
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case err := <-errc:
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if err != nil {
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t.Fatalf("homestead nofork <-> profork failed: %v", err)
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}
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case <-time.After(250 * time.Millisecond):
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t.Fatalf("homestead nofork <-> profork handler timeout")
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}
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}
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// Progress into Spurious. Forks mismatch, signalling differing chains, reject
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chainNoFork.InsertChain(blocksNoFork[1:2])
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chainProFork.InsertChain(blocksProFork[1:2])
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p2pNoFork, p2pProFork = p2p.MsgPipe()
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defer p2pNoFork.Close()
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defer p2pProFork.Close()
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peerNoFork = eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), p2pNoFork, nil)
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peerProFork = eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), p2pProFork, nil)
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defer peerNoFork.Close()
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defer peerProFork.Close()
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errc = make(chan error, 2)
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go func(errc chan error) {
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errc <- ethNoFork.runEthPeer(peerProFork, func(peer *eth.Peer) error { return nil })
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}(errc)
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go func(errc chan error) {
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errc <- ethProFork.runEthPeer(peerNoFork, func(peer *eth.Peer) error { return nil })
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}(errc)
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var successes int
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for i := 0; i < 2; i++ {
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select {
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case err := <-errc:
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if err == nil {
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successes++
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if successes == 2 { // Only one side disconnects
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t.Fatalf("fork ID rejection didn't happen")
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}
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}
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case <-time.After(250 * time.Millisecond):
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t.Fatalf("split peers not rejected")
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}
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}
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}
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// Tests that received transactions are added to the local pool.
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func TestRecvTransactions64(t *testing.T) { testRecvTransactions(t, 64) }
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func TestRecvTransactions65(t *testing.T) { testRecvTransactions(t, 65) }
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func testRecvTransactions(t *testing.T, protocol uint) {
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t.Parallel()
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// Create a message handler, configure it to accept transactions and watch them
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handler := newTestHandler()
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defer handler.close()
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handler.handler.acceptTxs = 1 // mark synced to accept transactions
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txs := make(chan core.NewTxsEvent)
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sub := handler.txpool.SubscribeNewTxsEvent(txs)
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defer sub.Unsubscribe()
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// Create a source peer to send messages through and a sink handler to receive them
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p2pSrc, p2pSink := p2p.MsgPipe()
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defer p2pSrc.Close()
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defer p2pSink.Close()
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src := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), p2pSrc, handler.txpool)
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sink := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), p2pSink, handler.txpool)
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defer src.Close()
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defer sink.Close()
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go handler.handler.runEthPeer(sink, func(peer *eth.Peer) error {
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return eth.Handle((*ethHandler)(handler.handler), peer)
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})
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// Run the handshake locally to avoid spinning up a source handler
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var (
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genesis = handler.chain.Genesis()
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head = handler.chain.CurrentBlock()
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td = handler.chain.GetTd(head.Hash(), head.NumberU64())
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)
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if err := src.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain)); err != nil {
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t.Fatalf("failed to run protocol handshake")
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}
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// Send the transaction to the sink and verify that it's added to the tx pool
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tx := types.NewTransaction(0, common.Address{}, big.NewInt(0), 100000, big.NewInt(0), nil)
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tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)
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if err := src.SendTransactions([]*types.Transaction{tx}); err != nil {
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t.Fatalf("failed to send transaction: %v", err)
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}
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select {
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case event := <-txs:
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if len(event.Txs) != 1 {
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t.Errorf("wrong number of added transactions: got %d, want 1", len(event.Txs))
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} else if event.Txs[0].Hash() != tx.Hash() {
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t.Errorf("added wrong tx hash: got %v, want %v", event.Txs[0].Hash(), tx.Hash())
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}
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case <-time.After(2 * time.Second):
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t.Errorf("no NewTxsEvent received within 2 seconds")
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}
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}
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// This test checks that pending transactions are sent.
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func TestSendTransactions64(t *testing.T) { testSendTransactions(t, 64) }
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func TestSendTransactions65(t *testing.T) { testSendTransactions(t, 65) }
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func testSendTransactions(t *testing.T, protocol uint) {
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t.Parallel()
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// Create a message handler and fill the pool with big transactions
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handler := newTestHandler()
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defer handler.close()
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insert := make([]*types.Transaction, 100)
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for nonce := range insert {
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tx := types.NewTransaction(uint64(nonce), common.Address{}, big.NewInt(0), 100000, big.NewInt(0), make([]byte, txsyncPackSize/10))
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tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)
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insert[nonce] = tx
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}
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go handler.txpool.AddRemotes(insert) // Need goroutine to not block on feed
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time.Sleep(250 * time.Millisecond) // Wait until tx events get out of the system (can't use events, tx broadcaster races with peer join)
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// Create a source handler to send messages through and a sink peer to receive them
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p2pSrc, p2pSink := p2p.MsgPipe()
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defer p2pSrc.Close()
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defer p2pSink.Close()
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src := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), p2pSrc, handler.txpool)
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sink := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), p2pSink, handler.txpool)
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defer src.Close()
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defer sink.Close()
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go handler.handler.runEthPeer(src, func(peer *eth.Peer) error {
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return eth.Handle((*ethHandler)(handler.handler), peer)
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})
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// Run the handshake locally to avoid spinning up a source handler
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var (
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genesis = handler.chain.Genesis()
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head = handler.chain.CurrentBlock()
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td = handler.chain.GetTd(head.Hash(), head.NumberU64())
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)
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if err := sink.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain)); err != nil {
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t.Fatalf("failed to run protocol handshake")
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}
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// After the handshake completes, the source handler should stream the sink
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// the transactions, subscribe to all inbound network events
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backend := new(testEthHandler)
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anns := make(chan []common.Hash)
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annSub := backend.txAnnounces.Subscribe(anns)
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defer annSub.Unsubscribe()
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bcasts := make(chan []*types.Transaction)
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bcastSub := backend.txBroadcasts.Subscribe(bcasts)
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defer bcastSub.Unsubscribe()
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go eth.Handle(backend, sink)
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// Make sure we get all the transactions on the correct channels
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seen := make(map[common.Hash]struct{})
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for len(seen) < len(insert) {
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switch protocol {
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case 63, 64:
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select {
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case <-anns:
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t.Errorf("tx announce received on pre eth/65")
|
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case txs := <-bcasts:
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for _, tx := range txs {
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if _, ok := seen[tx.Hash()]; ok {
|
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t.Errorf("duplicate transaction announced: %x", tx.Hash())
|
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}
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seen[tx.Hash()] = struct{}{}
|
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}
|
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}
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case 65:
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select {
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case hashes := <-anns:
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for _, hash := range hashes {
|
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if _, ok := seen[hash]; ok {
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t.Errorf("duplicate transaction announced: %x", hash)
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}
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seen[hash] = struct{}{}
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}
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case <-bcasts:
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t.Errorf("initial tx broadcast received on post eth/65")
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}
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default:
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panic("unsupported protocol, please extend test")
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}
|
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}
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for _, tx := range insert {
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if _, ok := seen[tx.Hash()]; !ok {
|
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t.Errorf("missing transaction: %x", tx.Hash())
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}
|
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}
|
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}
|
||||
|
||||
// Tests that transactions get propagated to all attached peers, either via direct
|
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// broadcasts or via announcements/retrievals.
|
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func TestTransactionPropagation64(t *testing.T) { testTransactionPropagation(t, 64) }
|
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func TestTransactionPropagation65(t *testing.T) { testTransactionPropagation(t, 65) }
|
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|
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func testTransactionPropagation(t *testing.T, protocol uint) {
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t.Parallel()
|
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|
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// Create a source handler to send transactions from and a number of sinks
|
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// to receive them. We need multiple sinks since a one-to-one peering would
|
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// broadcast all transactions without announcement.
|
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source := newTestHandler()
|
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defer source.close()
|
||||
|
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sinks := make([]*testHandler, 10)
|
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for i := 0; i < len(sinks); i++ {
|
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sinks[i] = newTestHandler()
|
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defer sinks[i].close()
|
||||
|
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sinks[i].handler.acceptTxs = 1 // mark synced to accept transactions
|
||||
}
|
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// Interconnect all the sink handlers with the source handler
|
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for i, sink := range sinks {
|
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sink := sink // Closure for gorotuine below
|
||||
|
||||
sourcePipe, sinkPipe := p2p.MsgPipe()
|
||||
defer sourcePipe.Close()
|
||||
defer sinkPipe.Close()
|
||||
|
||||
sourcePeer := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{byte(i)}, "", nil), sourcePipe, source.txpool)
|
||||
sinkPeer := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{0}, "", nil), sinkPipe, sink.txpool)
|
||||
defer sourcePeer.Close()
|
||||
defer sinkPeer.Close()
|
||||
|
||||
go source.handler.runEthPeer(sourcePeer, func(peer *eth.Peer) error {
|
||||
return eth.Handle((*ethHandler)(source.handler), peer)
|
||||
})
|
||||
go sink.handler.runEthPeer(sinkPeer, func(peer *eth.Peer) error {
|
||||
return eth.Handle((*ethHandler)(sink.handler), peer)
|
||||
})
|
||||
}
|
||||
// Subscribe to all the transaction pools
|
||||
txChs := make([]chan core.NewTxsEvent, len(sinks))
|
||||
for i := 0; i < len(sinks); i++ {
|
||||
txChs[i] = make(chan core.NewTxsEvent, 1024)
|
||||
|
||||
sub := sinks[i].txpool.SubscribeNewTxsEvent(txChs[i])
|
||||
defer sub.Unsubscribe()
|
||||
}
|
||||
// Fill the source pool with transactions and wait for them at the sinks
|
||||
txs := make([]*types.Transaction, 1024)
|
||||
for nonce := range txs {
|
||||
tx := types.NewTransaction(uint64(nonce), common.Address{}, big.NewInt(0), 100000, big.NewInt(0), nil)
|
||||
tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
|
||||
txs[nonce] = tx
|
||||
}
|
||||
source.txpool.AddRemotes(txs)
|
||||
|
||||
// Iterate through all the sinks and ensure they all got the transactions
|
||||
for i := range sinks {
|
||||
for arrived := 0; arrived < len(txs); {
|
||||
select {
|
||||
case event := <-txChs[i]:
|
||||
arrived += len(event.Txs)
|
||||
case <-time.NewTimer(time.Second).C:
|
||||
t.Errorf("sink %d: transaction propagation timed out: have %d, want %d", i, arrived, len(txs))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Tests that post eth protocol handshake, clients perform a mutual checkpoint
|
||||
// challenge to validate each other's chains. Hash mismatches, or missing ones
|
||||
// during a fast sync should lead to the peer getting dropped.
|
||||
func TestCheckpointChallenge(t *testing.T) {
|
||||
tests := []struct {
|
||||
syncmode downloader.SyncMode
|
||||
checkpoint bool
|
||||
timeout bool
|
||||
empty bool
|
||||
match bool
|
||||
drop bool
|
||||
}{
|
||||
// If checkpointing is not enabled locally, don't challenge and don't drop
|
||||
{downloader.FullSync, false, false, false, false, false},
|
||||
{downloader.FastSync, false, false, false, false, false},
|
||||
|
||||
// If checkpointing is enabled locally and remote response is empty, only drop during fast sync
|
||||
{downloader.FullSync, true, false, true, false, false},
|
||||
{downloader.FastSync, true, false, true, false, true}, // Special case, fast sync, unsynced peer
|
||||
|
||||
// If checkpointing is enabled locally and remote response mismatches, always drop
|
||||
{downloader.FullSync, true, false, false, false, true},
|
||||
{downloader.FastSync, true, false, false, false, true},
|
||||
|
||||
// If checkpointing is enabled locally and remote response matches, never drop
|
||||
{downloader.FullSync, true, false, false, true, false},
|
||||
{downloader.FastSync, true, false, false, true, false},
|
||||
|
||||
// If checkpointing is enabled locally and remote times out, always drop
|
||||
{downloader.FullSync, true, true, false, true, true},
|
||||
{downloader.FastSync, true, true, false, true, true},
|
||||
}
|
||||
for _, tt := range tests {
|
||||
t.Run(fmt.Sprintf("sync %v checkpoint %v timeout %v empty %v match %v", tt.syncmode, tt.checkpoint, tt.timeout, tt.empty, tt.match), func(t *testing.T) {
|
||||
testCheckpointChallenge(t, tt.syncmode, tt.checkpoint, tt.timeout, tt.empty, tt.match, tt.drop)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func testCheckpointChallenge(t *testing.T, syncmode downloader.SyncMode, checkpoint bool, timeout bool, empty bool, match bool, drop bool) {
|
||||
// Reduce the checkpoint handshake challenge timeout
|
||||
defer func(old time.Duration) { syncChallengeTimeout = old }(syncChallengeTimeout)
|
||||
syncChallengeTimeout = 250 * time.Millisecond
|
||||
|
||||
// Create a test handler and inject a CHT into it. The injection is a bit
|
||||
// ugly, but it beats creating everything manually just to avoid reaching
|
||||
// into the internals a bit.
|
||||
handler := newTestHandler()
|
||||
defer handler.close()
|
||||
|
||||
if syncmode == downloader.FastSync {
|
||||
atomic.StoreUint32(&handler.handler.fastSync, 1)
|
||||
} else {
|
||||
atomic.StoreUint32(&handler.handler.fastSync, 0)
|
||||
}
|
||||
var response *types.Header
|
||||
if checkpoint {
|
||||
number := (uint64(rand.Intn(500))+1)*params.CHTFrequency - 1
|
||||
response = &types.Header{Number: big.NewInt(int64(number)), Extra: []byte("valid")}
|
||||
|
||||
handler.handler.checkpointNumber = number
|
||||
handler.handler.checkpointHash = response.Hash()
|
||||
}
|
||||
// Create a challenger peer and a challenged one
|
||||
p2pLocal, p2pRemote := p2p.MsgPipe()
|
||||
defer p2pLocal.Close()
|
||||
defer p2pRemote.Close()
|
||||
|
||||
local := eth.NewPeer(eth.ETH64, p2p.NewPeer(enode.ID{1}, "", nil), p2pLocal, handler.txpool)
|
||||
remote := eth.NewPeer(eth.ETH64, p2p.NewPeer(enode.ID{2}, "", nil), p2pRemote, handler.txpool)
|
||||
defer local.Close()
|
||||
defer remote.Close()
|
||||
|
||||
go handler.handler.runEthPeer(local, func(peer *eth.Peer) error {
|
||||
return eth.Handle((*ethHandler)(handler.handler), peer)
|
||||
})
|
||||
// Run the handshake locally to avoid spinning up a remote handler
|
||||
var (
|
||||
genesis = handler.chain.Genesis()
|
||||
head = handler.chain.CurrentBlock()
|
||||
td = handler.chain.GetTd(head.Hash(), head.NumberU64())
|
||||
)
|
||||
if err := remote.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain)); err != nil {
|
||||
t.Fatalf("failed to run protocol handshake")
|
||||
}
|
||||
// Connect a new peer and check that we receive the checkpoint challenge
|
||||
if checkpoint {
|
||||
if err := remote.ExpectRequestHeadersByNumber(response.Number.Uint64(), 1, 0, false); err != nil {
|
||||
t.Fatalf("challenge mismatch: %v", err)
|
||||
}
|
||||
// Create a block to reply to the challenge if no timeout is simulated
|
||||
if !timeout {
|
||||
if empty {
|
||||
if err := remote.SendBlockHeaders([]*types.Header{}); err != nil {
|
||||
t.Fatalf("failed to answer challenge: %v", err)
|
||||
}
|
||||
} else if match {
|
||||
if err := remote.SendBlockHeaders([]*types.Header{response}); err != nil {
|
||||
t.Fatalf("failed to answer challenge: %v", err)
|
||||
}
|
||||
} else {
|
||||
if err := remote.SendBlockHeaders([]*types.Header{{Number: response.Number}}); err != nil {
|
||||
t.Fatalf("failed to answer challenge: %v", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// Wait until the test timeout passes to ensure proper cleanup
|
||||
time.Sleep(syncChallengeTimeout + 300*time.Millisecond)
|
||||
|
||||
// Verify that the remote peer is maintained or dropped
|
||||
if drop {
|
||||
if peers := handler.handler.peers.Len(); peers != 0 {
|
||||
t.Fatalf("peer count mismatch: have %d, want %d", peers, 0)
|
||||
}
|
||||
} else {
|
||||
if peers := handler.handler.peers.Len(); peers != 1 {
|
||||
t.Fatalf("peer count mismatch: have %d, want %d", peers, 1)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Tests that blocks are broadcast to a sqrt number of peers only.
|
||||
func TestBroadcastBlock1Peer(t *testing.T) { testBroadcastBlock(t, 1, 1) }
|
||||
func TestBroadcastBlock2Peers(t *testing.T) { testBroadcastBlock(t, 2, 1) }
|
||||
func TestBroadcastBlock3Peers(t *testing.T) { testBroadcastBlock(t, 3, 1) }
|
||||
func TestBroadcastBlock4Peers(t *testing.T) { testBroadcastBlock(t, 4, 2) }
|
||||
func TestBroadcastBlock5Peers(t *testing.T) { testBroadcastBlock(t, 5, 2) }
|
||||
func TestBroadcastBlock8Peers(t *testing.T) { testBroadcastBlock(t, 9, 3) }
|
||||
func TestBroadcastBlock12Peers(t *testing.T) { testBroadcastBlock(t, 12, 3) }
|
||||
func TestBroadcastBlock16Peers(t *testing.T) { testBroadcastBlock(t, 16, 4) }
|
||||
func TestBroadcastBloc26Peers(t *testing.T) { testBroadcastBlock(t, 26, 5) }
|
||||
func TestBroadcastBlock100Peers(t *testing.T) { testBroadcastBlock(t, 100, 10) }
|
||||
|
||||
func testBroadcastBlock(t *testing.T, peers, bcasts int) {
|
||||
t.Parallel()
|
||||
|
||||
// Create a source handler to broadcast blocks from and a number of sinks
|
||||
// to receive them.
|
||||
source := newTestHandlerWithBlocks(1)
|
||||
defer source.close()
|
||||
|
||||
sinks := make([]*testEthHandler, peers)
|
||||
for i := 0; i < len(sinks); i++ {
|
||||
sinks[i] = new(testEthHandler)
|
||||
}
|
||||
// Interconnect all the sink handlers with the source handler
|
||||
var (
|
||||
genesis = source.chain.Genesis()
|
||||
td = source.chain.GetTd(genesis.Hash(), genesis.NumberU64())
|
||||
)
|
||||
for i, sink := range sinks {
|
||||
sink := sink // Closure for gorotuine below
|
||||
|
||||
sourcePipe, sinkPipe := p2p.MsgPipe()
|
||||
defer sourcePipe.Close()
|
||||
defer sinkPipe.Close()
|
||||
|
||||
sourcePeer := eth.NewPeer(eth.ETH64, p2p.NewPeer(enode.ID{byte(i)}, "", nil), sourcePipe, nil)
|
||||
sinkPeer := eth.NewPeer(eth.ETH64, p2p.NewPeer(enode.ID{0}, "", nil), sinkPipe, nil)
|
||||
defer sourcePeer.Close()
|
||||
defer sinkPeer.Close()
|
||||
|
||||
go source.handler.runEthPeer(sourcePeer, func(peer *eth.Peer) error {
|
||||
return eth.Handle((*ethHandler)(source.handler), peer)
|
||||
})
|
||||
if err := sinkPeer.Handshake(1, td, genesis.Hash(), genesis.Hash(), forkid.NewIDWithChain(source.chain), forkid.NewFilter(source.chain)); err != nil {
|
||||
t.Fatalf("failed to run protocol handshake")
|
||||
}
|
||||
go eth.Handle(sink, sinkPeer)
|
||||
}
|
||||
// Subscribe to all the transaction pools
|
||||
blockChs := make([]chan *types.Block, len(sinks))
|
||||
for i := 0; i < len(sinks); i++ {
|
||||
blockChs[i] = make(chan *types.Block, 1)
|
||||
defer close(blockChs[i])
|
||||
|
||||
sub := sinks[i].blockBroadcasts.Subscribe(blockChs[i])
|
||||
defer sub.Unsubscribe()
|
||||
}
|
||||
// Initiate a block propagation across the peers
|
||||
time.Sleep(100 * time.Millisecond)
|
||||
source.handler.BroadcastBlock(source.chain.CurrentBlock(), true)
|
||||
|
||||
// Iterate through all the sinks and ensure the correct number got the block
|
||||
done := make(chan struct{}, peers)
|
||||
for _, ch := range blockChs {
|
||||
ch := ch
|
||||
go func() {
|
||||
<-ch
|
||||
done <- struct{}{}
|
||||
}()
|
||||
}
|
||||
var received int
|
||||
for {
|
||||
select {
|
||||
case <-done:
|
||||
received++
|
||||
|
||||
case <-time.After(100 * time.Millisecond):
|
||||
if received != bcasts {
|
||||
t.Errorf("broadcast count mismatch: have %d, want %d", received, bcasts)
|
||||
}
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Tests that a propagated malformed block (uncles or transactions don't match
|
||||
// with the hashes in the header) gets discarded and not broadcast forward.
|
||||
func TestBroadcastMalformedBlock64(t *testing.T) { testBroadcastMalformedBlock(t, 64) }
|
||||
func TestBroadcastMalformedBlock65(t *testing.T) { testBroadcastMalformedBlock(t, 65) }
|
||||
|
||||
func testBroadcastMalformedBlock(t *testing.T, protocol uint) {
|
||||
t.Parallel()
|
||||
|
||||
// Create a source handler to broadcast blocks from and a number of sinks
|
||||
// to receive them.
|
||||
source := newTestHandlerWithBlocks(1)
|
||||
defer source.close()
|
||||
|
||||
// Create a source handler to send messages through and a sink peer to receive them
|
||||
p2pSrc, p2pSink := p2p.MsgPipe()
|
||||
defer p2pSrc.Close()
|
||||
defer p2pSink.Close()
|
||||
|
||||
src := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), p2pSrc, source.txpool)
|
||||
sink := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), p2pSink, source.txpool)
|
||||
defer src.Close()
|
||||
defer sink.Close()
|
||||
|
||||
go source.handler.runEthPeer(src, func(peer *eth.Peer) error {
|
||||
return eth.Handle((*ethHandler)(source.handler), peer)
|
||||
})
|
||||
// Run the handshake locally to avoid spinning up a sink handler
|
||||
var (
|
||||
genesis = source.chain.Genesis()
|
||||
td = source.chain.GetTd(genesis.Hash(), genesis.NumberU64())
|
||||
)
|
||||
if err := sink.Handshake(1, td, genesis.Hash(), genesis.Hash(), forkid.NewIDWithChain(source.chain), forkid.NewFilter(source.chain)); err != nil {
|
||||
t.Fatalf("failed to run protocol handshake")
|
||||
}
|
||||
// After the handshake completes, the source handler should stream the sink
|
||||
// the blocks, subscribe to inbound network events
|
||||
backend := new(testEthHandler)
|
||||
|
||||
blocks := make(chan *types.Block, 1)
|
||||
sub := backend.blockBroadcasts.Subscribe(blocks)
|
||||
defer sub.Unsubscribe()
|
||||
|
||||
go eth.Handle(backend, sink)
|
||||
|
||||
// Create various combinations of malformed blocks
|
||||
head := source.chain.CurrentBlock()
|
||||
|
||||
malformedUncles := head.Header()
|
||||
malformedUncles.UncleHash[0]++
|
||||
malformedTransactions := head.Header()
|
||||
malformedTransactions.TxHash[0]++
|
||||
malformedEverything := head.Header()
|
||||
malformedEverything.UncleHash[0]++
|
||||
malformedEverything.TxHash[0]++
|
||||
|
||||
// Try to broadcast all malformations and ensure they all get discarded
|
||||
for _, header := range []*types.Header{malformedUncles, malformedTransactions, malformedEverything} {
|
||||
block := types.NewBlockWithHeader(header).WithBody(head.Transactions(), head.Uncles())
|
||||
if err := src.SendNewBlock(block, big.NewInt(131136)); err != nil {
|
||||
t.Fatalf("failed to broadcast block: %v", err)
|
||||
}
|
||||
select {
|
||||
case <-blocks:
|
||||
t.Fatalf("malformed block forwarded")
|
||||
case <-time.After(100 * time.Millisecond):
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user