ca376ead88
This PR implements the new LES protocol version extensions: * new and more efficient Merkle proofs reply format (when replying to a multiple Merkle proofs request, we just send a single set of trie nodes containing all necessary nodes) * BBT (BloomBitsTrie) works similarly to the existing CHT and contains the bloombits search data to speed up log searches * GetTxStatusMsg returns the inclusion position or the pending/queued/unknown state of a transaction referenced by hash * an optional signature of new block data (number/hash/td) can be included in AnnounceMsg to provide an option for "very light clients" (mobile/embedded devices) to skip expensive Ethash check and accept multiple signatures of somewhat trusted servers (still a lot better than trusting a single server completely and retrieving everything through RPC). The new client mode is not implemented in this PR, just the protocol extension.
217 lines
7.4 KiB
Go
217 lines
7.4 KiB
Go
// Copyright 2016 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 les
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import (
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"bytes"
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"context"
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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/common/math"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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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"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/light"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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)
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type odrTestFn func(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte
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func TestOdrGetBlockLes1(t *testing.T) { testOdr(t, 1, 1, odrGetBlock) }
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func TestOdrGetBlockLes2(t *testing.T) { testOdr(t, 2, 1, odrGetBlock) }
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func odrGetBlock(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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var block *types.Block
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if bc != nil {
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block = bc.GetBlockByHash(bhash)
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} else {
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block, _ = lc.GetBlockByHash(ctx, bhash)
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}
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if block == nil {
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return nil
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}
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rlp, _ := rlp.EncodeToBytes(block)
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return rlp
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}
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func TestOdrGetReceiptsLes1(t *testing.T) { testOdr(t, 1, 1, odrGetReceipts) }
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func TestOdrGetReceiptsLes2(t *testing.T) { testOdr(t, 2, 1, odrGetReceipts) }
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func odrGetReceipts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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var receipts types.Receipts
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if bc != nil {
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receipts = core.GetBlockReceipts(db, bhash, core.GetBlockNumber(db, bhash))
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} else {
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receipts, _ = light.GetBlockReceipts(ctx, lc.Odr(), bhash, core.GetBlockNumber(db, bhash))
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}
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if receipts == nil {
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return nil
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}
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rlp, _ := rlp.EncodeToBytes(receipts)
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return rlp
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}
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func TestOdrAccountsLes1(t *testing.T) { testOdr(t, 1, 1, odrAccounts) }
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func TestOdrAccountsLes2(t *testing.T) { testOdr(t, 2, 1, odrAccounts) }
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func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678")
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acc := []common.Address{testBankAddress, acc1Addr, acc2Addr, dummyAddr}
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var (
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res []byte
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st *state.StateDB
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err error
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)
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for _, addr := range acc {
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if bc != nil {
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header := bc.GetHeaderByHash(bhash)
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st, err = state.New(header.Root, state.NewDatabase(db))
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} else {
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header := lc.GetHeaderByHash(bhash)
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st = light.NewState(ctx, header, lc.Odr())
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}
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if err == nil {
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bal := st.GetBalance(addr)
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rlp, _ := rlp.EncodeToBytes(bal)
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res = append(res, rlp...)
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}
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}
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return res
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}
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func TestOdrContractCallLes1(t *testing.T) { testOdr(t, 1, 2, odrContractCall) }
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func TestOdrContractCallLes2(t *testing.T) { testOdr(t, 2, 2, odrContractCall) }
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type callmsg struct {
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types.Message
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}
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func (callmsg) CheckNonce() bool { return false }
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func odrContractCall(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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data := common.Hex2Bytes("60CD26850000000000000000000000000000000000000000000000000000000000000000")
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var res []byte
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for i := 0; i < 3; i++ {
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data[35] = byte(i)
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if bc != nil {
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header := bc.GetHeaderByHash(bhash)
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statedb, err := state.New(header.Root, state.NewDatabase(db))
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if err == nil {
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from := statedb.GetOrNewStateObject(testBankAddress)
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from.SetBalance(math.MaxBig256)
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msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(100000), new(big.Int), data, false)}
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context := core.NewEVMContext(msg, header, bc, nil)
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vmenv := vm.NewEVM(context, statedb, config, vm.Config{})
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//vmenv := core.NewEnv(statedb, config, bc, msg, header, vm.Config{})
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gp := new(core.GasPool).AddGas(math.MaxBig256)
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ret, _, _, _ := core.ApplyMessage(vmenv, msg, gp)
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res = append(res, ret...)
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}
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} else {
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header := lc.GetHeaderByHash(bhash)
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state := light.NewState(ctx, header, lc.Odr())
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state.SetBalance(testBankAddress, math.MaxBig256)
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msg := callmsg{types.NewMessage(testBankAddress, &testContractAddr, 0, new(big.Int), big.NewInt(100000), new(big.Int), data, false)}
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context := core.NewEVMContext(msg, header, lc, nil)
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vmenv := vm.NewEVM(context, state, config, vm.Config{})
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gp := new(core.GasPool).AddGas(math.MaxBig256)
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ret, _, _, _ := core.ApplyMessage(vmenv, msg, gp)
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if state.Error() == nil {
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res = append(res, ret...)
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}
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}
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}
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return res
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}
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func testOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) {
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// Assemble the test environment
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peers := newPeerSet()
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dist := newRequestDistributor(peers, make(chan struct{}))
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rm := newRetrieveManager(peers, dist, nil)
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db, _ := ethdb.NewMemDatabase()
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ldb, _ := ethdb.NewMemDatabase()
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odr := NewLesOdr(ldb, light.NewChtIndexer(db, true), light.NewBloomTrieIndexer(db, true), eth.NewBloomIndexer(db, light.BloomTrieFrequency), rm)
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pm := newTestProtocolManagerMust(t, false, 4, testChainGen, nil, nil, db)
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lpm := newTestProtocolManagerMust(t, true, 0, nil, peers, odr, ldb)
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_, err1, lpeer, err2 := newTestPeerPair("peer", protocol, pm, lpm)
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select {
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case <-time.After(time.Millisecond * 100):
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case err := <-err1:
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t.Fatalf("peer 1 handshake error: %v", err)
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case err := <-err2:
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t.Fatalf("peer 1 handshake error: %v", err)
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}
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lpm.synchronise(lpeer)
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test := func(expFail uint64) {
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for i := uint64(0); i <= pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
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bhash := core.GetCanonicalHash(db, i)
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b1 := fn(light.NoOdr, db, pm.chainConfig, pm.blockchain.(*core.BlockChain), nil, bhash)
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ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
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defer cancel()
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b2 := fn(ctx, ldb, lpm.chainConfig, nil, lpm.blockchain.(*light.LightChain), bhash)
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eq := bytes.Equal(b1, b2)
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exp := i < expFail
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if exp && !eq {
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t.Errorf("odr mismatch")
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}
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if !exp && eq {
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t.Errorf("unexpected odr match")
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}
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}
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}
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// temporarily remove peer to test odr fails
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// expect retrievals to fail (except genesis block) without a les peer
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peers.Unregister(lpeer.id)
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time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
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test(expFail)
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// expect all retrievals to pass
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peers.Register(lpeer)
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time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
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lpeer.lock.Lock()
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lpeer.hasBlock = func(common.Hash, uint64) bool { return true }
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lpeer.lock.Unlock()
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test(5)
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// still expect all retrievals to pass, now data should be cached locally
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peers.Unregister(lpeer.id)
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time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
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test(5)
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}
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