441 lines
15 KiB
Go
441 lines
15 KiB
Go
// Copyright 2020 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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"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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)
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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) 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(packet.Hashes)
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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.PooledTransactionsResponse:
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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 TestForkIDSplit68(t *testing.T) { testForkIDSplit(t, eth.ETH68) }
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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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chainNoFork, _ = core.NewBlockChain(dbNoFork, nil, gspecNoFork, nil, engine, vm.Config{}, nil)
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chainProFork, _ = core.NewBlockChain(dbProFork, nil, gspecProFork, nil, engine, vm.Config{}, nil)
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_, blocksNoFork, _ = core.GenerateChainWithGenesis(gspecNoFork, engine, 2, nil)
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_, blocksProFork, _ = core.GenerateChainWithGenesis(gspecProFork, engine, 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.NewPeerPipe(enode.ID{1}, "", nil, p2pNoFork), p2pNoFork, nil)
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peerProFork := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{2}, "", nil, p2pProFork), 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.NewPeerPipe(enode.ID{1}, "", nil, p2pNoFork), p2pNoFork, nil)
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peerProFork = eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{2}, "", nil, p2pProFork), 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 TestRecvTransactions68(t *testing.T) { testRecvTransactions(t, eth.ETH68) }
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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.synced.Store(true) // mark synced to accept transactions
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txs := make(chan core.NewTxsEvent)
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sub := handler.txpool.SubscribeTransactions(txs, false)
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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.NewPeerPipe(enode.ID{1}, "", nil, p2pSrc), p2pSrc, handler.txpool)
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sink := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{2}, "", nil, p2pSink), 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.Number.Uint64())
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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 TestSendTransactions68(t *testing.T) { testSendTransactions(t, eth.ETH68) }
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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, 10240))
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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.Add(insert, false, false) // 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.NewPeerPipe(enode.ID{1}, "", nil, p2pSrc), p2pSrc, handler.txpool)
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sink := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{2}, "", nil, p2pSink), 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.Number.Uint64())
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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 68:
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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/66")
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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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}
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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 TestTransactionPropagation68(t *testing.T) { testTransactionPropagation(t, eth.ETH68) }
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func testTransactionPropagation(t *testing.T, protocol uint) {
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t.Parallel()
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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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source.handler.snapSync.Store(false) // Avoid requiring snap, otherwise some will be dropped below
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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.synced.Store(true) // mark synced to accept transactions
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}
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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 goroutine below
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sourcePipe, sinkPipe := p2p.MsgPipe()
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defer sourcePipe.Close()
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defer sinkPipe.Close()
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sourcePeer := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{byte(i + 1)}, "", nil, sourcePipe), sourcePipe, source.txpool)
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sinkPeer := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{0}, "", nil, sinkPipe), sinkPipe, sink.txpool)
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defer sourcePeer.Close()
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defer sinkPeer.Close()
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go source.handler.runEthPeer(sourcePeer, func(peer *eth.Peer) error {
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return eth.Handle((*ethHandler)(source.handler), peer)
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})
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go sink.handler.runEthPeer(sinkPeer, func(peer *eth.Peer) error {
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return eth.Handle((*ethHandler)(sink.handler), peer)
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})
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}
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// Subscribe to all the transaction pools
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txChs := make([]chan core.NewTxsEvent, len(sinks))
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for i := 0; i < len(sinks); i++ {
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txChs[i] = make(chan core.NewTxsEvent, 1024)
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sub := sinks[i].txpool.SubscribeTransactions(txChs[i], false)
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defer sub.Unsubscribe()
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}
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// Fill the source pool with transactions and wait for them at the sinks
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txs := make([]*types.Transaction, 1024)
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for nonce := range txs {
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tx := types.NewTransaction(uint64(nonce), 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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txs[nonce] = tx
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}
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source.txpool.Add(txs, false, false)
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// Iterate through all the sinks and ensure they all got the transactions
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for i := range sinks {
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for arrived, timeout := 0, false; arrived < len(txs) && !timeout; {
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select {
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case event := <-txChs[i]:
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arrived += len(event.Txs)
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case <-time.After(2 * time.Second):
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t.Errorf("sink %d: transaction propagation timed out: have %d, want %d", i, arrived, len(txs))
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timeout = true
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}
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}
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}
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}
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