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eth, eth/downloader: handle header requests, table driven proto tests

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This commit is contained in:
Péter Szilágyi
2015-07-02 19:55:18 +03:00
parent c51e153b5c
commit 42f44dda54
14 changed files with 1213 additions and 258 deletions
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525
eth/handler_test.go Normal file
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@@ -0,0 +1,525 @@
package eth
import (
"fmt"
"math/big"
"math/rand"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/params"
)
// Tests that hashes can be retrieved from a remote chain by hashes in reverse
// order.
func TestGetBlockHashes60(t *testing.T) { testGetBlockHashes(t, 60) }
func TestGetBlockHashes61(t *testing.T) { testGetBlockHashes(t, 61) }
func testGetBlockHashes(t *testing.T, protocol int) {
pm := newTestProtocolManager(downloader.MaxHashFetch+15, nil, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Create a batch of tests for various scenarios
limit := downloader.MaxHashFetch
tests := []struct {
origin common.Hash
number int
result int
}{
{common.Hash{}, 1, 0}, // Make sure non existent hashes don't return results
{pm.chainman.Genesis().Hash(), 1, 0}, // There are no hashes to retrieve up from the genesis
{pm.chainman.GetBlockByNumber(5).Hash(), 5, 5}, // All the hashes including the genesis requested
{pm.chainman.GetBlockByNumber(5).Hash(), 10, 5}, // More hashes than available till the genesis requested
{pm.chainman.GetBlockByNumber(100).Hash(), 10, 10}, // All hashes available from the middle of the chain
{pm.chainman.CurrentBlock().Hash(), 10, 10}, // All hashes available from the head of the chain
{pm.chainman.CurrentBlock().Hash(), limit, limit}, // Request the maximum allowed hash count
{pm.chainman.CurrentBlock().Hash(), limit + 1, limit}, // Request more than the maximum allowed hash count
}
// Run each of the tests and verify the results against the chain
for i, tt := range tests {
// Assemble the hash response we would like to receive
resp := make([]common.Hash, tt.result)
if len(resp) > 0 {
from := pm.chainman.GetBlock(tt.origin).NumberU64() - 1
for j := 0; j < len(resp); j++ {
resp[j] = pm.chainman.GetBlockByNumber(uint64(int(from) - j)).Hash()
}
}
// Send the hash request and verify the response
p2p.Send(peer.app, 0x03, getBlockHashesData{tt.origin, uint64(tt.number)})
if err := p2p.ExpectMsg(peer.app, 0x04, resp); err != nil {
t.Errorf("test %d: block hashes mismatch: %v", i, err)
}
}
}
// Tests that hashes can be retrieved from a remote chain by numbers in forward
// order.
func TestGetBlockHashesFromNumber60(t *testing.T) { testGetBlockHashesFromNumber(t, 60) }
func TestGetBlockHashesFromNumber61(t *testing.T) { testGetBlockHashesFromNumber(t, 61) }
func testGetBlockHashesFromNumber(t *testing.T, protocol int) {
pm := newTestProtocolManager(downloader.MaxHashFetch+15, nil, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Create a batch of tests for various scenarios
limit := downloader.MaxHashFetch
tests := []struct {
origin uint64
number int
result int
}{
{pm.chainman.CurrentBlock().NumberU64() + 1, 1, 0}, // Out of bounds requests should return empty
{pm.chainman.CurrentBlock().NumberU64(), 1, 1}, // Make sure the head hash can be retrieved
{pm.chainman.CurrentBlock().NumberU64() - 4, 5, 5}, // All hashes, including the head hash requested
{pm.chainman.CurrentBlock().NumberU64() - 4, 10, 5}, // More hashes requested than available till the head
{pm.chainman.CurrentBlock().NumberU64() - 100, 10, 10}, // All hashes available from the middle of the chain
{0, 10, 10}, // All hashes available from the root of the chain
{0, limit, limit}, // Request the maximum allowed hash count
{0, limit + 1, limit}, // Request more than the maximum allowed hash count
{0, 1, 1}, // Make sure the genesis hash can be retrieved
}
// Run each of the tests and verify the results against the chain
for i, tt := range tests {
// Assemble the hash response we would like to receive
resp := make([]common.Hash, tt.result)
for j := 0; j < len(resp); j++ {
resp[j] = pm.chainman.GetBlockByNumber(tt.origin + uint64(j)).Hash()
}
// Send the hash request and verify the response
p2p.Send(peer.app, 0x08, getBlockHashesFromNumberData{tt.origin, uint64(tt.number)})
if err := p2p.ExpectMsg(peer.app, 0x04, resp); err != nil {
t.Errorf("test %d: block hashes mismatch: %v", i, err)
}
}
}
// Tests that blocks can be retrieved from a remote chain based on their hashes.
func TestGetBlocks60(t *testing.T) { testGetBlocks(t, 60) }
func TestGetBlocks61(t *testing.T) { testGetBlocks(t, 61) }
func testGetBlocks(t *testing.T, protocol int) {
pm := newTestProtocolManager(downloader.MaxHashFetch+15, nil, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Create a batch of tests for various scenarios
limit := downloader.MaxBlockFetch
tests := []struct {
random int // Number of blocks to fetch randomly from the chain
explicit []common.Hash // Explicitly requested blocks
available []bool // Availability of explicitly requested blocks
expected int // Total number of existing blocks to expect
}{
{1, nil, nil, 1}, // A single random block should be retrievable
{10, nil, nil, 10}, // Multiple random blocks should be retrievable
{limit, nil, nil, limit}, // The maximum possible blocks should be retrievable
{limit + 1, nil, nil, limit}, // No more that the possible block count should be returned
{0, []common.Hash{pm.chainman.Genesis().Hash()}, []bool{true}, 1}, // The genesis block should be retrievable
{0, []common.Hash{pm.chainman.CurrentBlock().Hash()}, []bool{true}, 1}, // The chains head block should be retrievable
{0, []common.Hash{common.Hash{}}, []bool{false}, 0}, // A non existent block should not be returned
// Existing and non-existing blocks interleaved should not cause problems
{0, []common.Hash{
common.Hash{},
pm.chainman.GetBlockByNumber(1).Hash(),
common.Hash{},
pm.chainman.GetBlockByNumber(10).Hash(),
common.Hash{},
pm.chainman.GetBlockByNumber(100).Hash(),
common.Hash{},
}, []bool{false, true, false, true, false, true, false}, 3},
}
// Run each of the tests and verify the results against the chain
for i, tt := range tests {
// Collect the hashes to request, and the response to expect
hashes, seen := []common.Hash{}, make(map[int64]bool)
blocks := []*types.Block{}
for j := 0; j < tt.random; j++ {
for {
num := rand.Int63n(int64(pm.chainman.CurrentBlock().NumberU64()))
if !seen[num] {
seen[num] = true
block := pm.chainman.GetBlockByNumber(uint64(num))
hashes = append(hashes, block.Hash())
if len(blocks) < tt.expected {
blocks = append(blocks, block)
}
break
}
}
}
for j, hash := range tt.explicit {
hashes = append(hashes, hash)
if tt.available[j] && len(blocks) < tt.expected {
blocks = append(blocks, pm.chainman.GetBlock(hash))
}
}
// Send the hash request and verify the response
p2p.Send(peer.app, 0x05, hashes)
if err := p2p.ExpectMsg(peer.app, 0x06, blocks); err != nil {
t.Errorf("test %d: blocks mismatch: %v", i, err)
}
}
}
// Tests that block headers can be retrieved from a remote chain based on user queries.
func TestGetBlockHeaders62(t *testing.T) { testGetBlockHeaders(t, 62) }
func TestGetBlockHeaders63(t *testing.T) { testGetBlockHeaders(t, 63) }
func TestGetBlockHeaders64(t *testing.T) { testGetBlockHeaders(t, 64) }
func testGetBlockHeaders(t *testing.T, protocol int) {
pm := newTestProtocolManager(downloader.MaxHashFetch+15, nil, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Create a "random" unknown hash for testing
var unknown common.Hash
for i, _ := range unknown {
unknown[i] = byte(i)
}
// Create a batch of tests for various scenarios
limit := uint64(downloader.MaxHeaderFetch)
tests := []struct {
query *getBlockHeadersData // The query to execute for header retrieval
expect []common.Hash // The hashes of the block whose headers are expected
}{
// A single random block should be retrievable by hash and number too
{
&getBlockHeadersData{Origin: hashOrNumber{Hash: pm.chainman.GetBlockByNumber(limit / 2).Hash()}, Amount: 1},
[]common.Hash{pm.chainman.GetBlockByNumber(limit / 2).Hash()},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 1},
[]common.Hash{pm.chainman.GetBlockByNumber(limit / 2).Hash()},
},
// Multiple headers should be retrievable in both directions
{
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3},
[]common.Hash{
pm.chainman.GetBlockByNumber(limit / 2).Hash(),
pm.chainman.GetBlockByNumber(limit/2 + 1).Hash(),
pm.chainman.GetBlockByNumber(limit/2 + 2).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3, Reverse: true},
[]common.Hash{
pm.chainman.GetBlockByNumber(limit / 2).Hash(),
pm.chainman.GetBlockByNumber(limit/2 - 1).Hash(),
pm.chainman.GetBlockByNumber(limit/2 - 2).Hash(),
},
},
// Multiple headers with skip lists should be retrievable
{
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3},
[]common.Hash{
pm.chainman.GetBlockByNumber(limit / 2).Hash(),
pm.chainman.GetBlockByNumber(limit/2 + 4).Hash(),
pm.chainman.GetBlockByNumber(limit/2 + 8).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3, Reverse: true},
[]common.Hash{
pm.chainman.GetBlockByNumber(limit / 2).Hash(),
pm.chainman.GetBlockByNumber(limit/2 - 4).Hash(),
pm.chainman.GetBlockByNumber(limit/2 - 8).Hash(),
},
},
// The chain endpoints should be retrievable
{
&getBlockHeadersData{Origin: hashOrNumber{Number: 0}, Amount: 1},
[]common.Hash{pm.chainman.GetBlockByNumber(0).Hash()},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: pm.chainman.CurrentBlock().NumberU64()}, Amount: 1},
[]common.Hash{pm.chainman.CurrentBlock().Hash()},
},
// Ensure protocol limits are honored
{
&getBlockHeadersData{Origin: hashOrNumber{Number: pm.chainman.CurrentBlock().NumberU64() - 1}, Amount: limit + 10, Reverse: true},
pm.chainman.GetBlockHashesFromHash(pm.chainman.CurrentBlock().Hash(), limit),
},
// Check that requesting more than available is handled gracefully
{
&getBlockHeadersData{Origin: hashOrNumber{Number: pm.chainman.CurrentBlock().NumberU64() - 4}, Skip: 3, Amount: 3},
[]common.Hash{
pm.chainman.GetBlockByNumber(pm.chainman.CurrentBlock().NumberU64() - 4).Hash(),
pm.chainman.GetBlockByNumber(pm.chainman.CurrentBlock().NumberU64()).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 3, Amount: 3, Reverse: true},
[]common.Hash{
pm.chainman.GetBlockByNumber(4).Hash(),
pm.chainman.GetBlockByNumber(0).Hash(),
},
},
// Check that requesting more than available is handled gracefully, even if mid skip
{
&getBlockHeadersData{Origin: hashOrNumber{Number: pm.chainman.CurrentBlock().NumberU64() - 4}, Skip: 2, Amount: 3},
[]common.Hash{
pm.chainman.GetBlockByNumber(pm.chainman.CurrentBlock().NumberU64() - 4).Hash(),
pm.chainman.GetBlockByNumber(pm.chainman.CurrentBlock().NumberU64() - 1).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 2, Amount: 3, Reverse: true},
[]common.Hash{
pm.chainman.GetBlockByNumber(4).Hash(),
pm.chainman.GetBlockByNumber(1).Hash(),
},
},
// Check that non existing headers aren't returned
{
&getBlockHeadersData{Origin: hashOrNumber{Hash: unknown}, Amount: 1},
[]common.Hash{},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: pm.chainman.CurrentBlock().NumberU64() + 1}, Amount: 1},
[]common.Hash{},
},
}
// Run each of the tests and verify the results against the chain
for i, tt := range tests {
// Collect the headers to expect in the response
headers := []*types.Header{}
for _, hash := range tt.expect {
headers = append(headers, pm.chainman.GetBlock(hash).Header())
}
// Send the hash request and verify the response
p2p.Send(peer.app, 0x03, tt.query)
if err := p2p.ExpectMsg(peer.app, 0x04, headers); err != nil {
t.Errorf("test %d: headers mismatch: %v", i, err)
}
}
}
// Tests that block contents can be retrieved from a remote chain based on their hashes.
func TestGetBlockBodies62(t *testing.T) { testGetBlockBodies(t, 62) }
func TestGetBlockBodies63(t *testing.T) { testGetBlockBodies(t, 63) }
func TestGetBlockBodies64(t *testing.T) { testGetBlockBodies(t, 64) }
func testGetBlockBodies(t *testing.T, protocol int) {
pm := newTestProtocolManager(downloader.MaxBlockFetch+15, nil, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Create a batch of tests for various scenarios
limit := downloader.MaxBlockFetch
tests := []struct {
random int // Number of blocks to fetch randomly from the chain
explicit []common.Hash // Explicitly requested blocks
available []bool // Availability of explicitly requested blocks
expected int // Total number of existing blocks to expect
}{
{1, nil, nil, 1}, // A single random block should be retrievable
{10, nil, nil, 10}, // Multiple random blocks should be retrievable
{limit, nil, nil, limit}, // The maximum possible blocks should be retrievable
{limit + 1, nil, nil, limit}, // No more that the possible block count should be returned
{0, []common.Hash{pm.chainman.Genesis().Hash()}, []bool{true}, 1}, // The genesis block should be retrievable
{0, []common.Hash{pm.chainman.CurrentBlock().Hash()}, []bool{true}, 1}, // The chains head block should be retrievable
{0, []common.Hash{common.Hash{}}, []bool{false}, 0}, // A non existent block should not be returned
// Existing and non-existing blocks interleaved should not cause problems
{0, []common.Hash{
common.Hash{},
pm.chainman.GetBlockByNumber(1).Hash(),
common.Hash{},
pm.chainman.GetBlockByNumber(10).Hash(),
common.Hash{},
pm.chainman.GetBlockByNumber(100).Hash(),
common.Hash{},
}, []bool{false, true, false, true, false, true, false}, 3},
}
// Run each of the tests and verify the results against the chain
for i, tt := range tests {
// Collect the hashes to request, and the response to expect
hashes, seen := []common.Hash{}, make(map[int64]bool)
bodies := []*blockBody{}
for j := 0; j < tt.random; j++ {
for {
num := rand.Int63n(int64(pm.chainman.CurrentBlock().NumberU64()))
if !seen[num] {
seen[num] = true
block := pm.chainman.GetBlockByNumber(uint64(num))
hashes = append(hashes, block.Hash())
if len(bodies) < tt.expected {
bodies = append(bodies, &blockBody{Transactions: block.Transactions(), Uncles: block.Uncles()})
}
break
}
}
}
for j, hash := range tt.explicit {
hashes = append(hashes, hash)
if tt.available[j] && len(bodies) < tt.expected {
block := pm.chainman.GetBlock(hash)
bodies = append(bodies, &blockBody{Transactions: block.Transactions(), Uncles: block.Uncles()})
}
}
// Send the hash request and verify the response
p2p.Send(peer.app, 0x05, hashes)
if err := p2p.ExpectMsg(peer.app, 0x06, bodies); err != nil {
t.Errorf("test %d: bodies mismatch: %v", i, err)
}
}
}
// Tests that the node state database can be retrieved based on hashes.
func TestGetNodeData63(t *testing.T) { testGetNodeData(t, 63) }
func TestGetNodeData64(t *testing.T) { testGetNodeData(t, 64) }
func testGetNodeData(t *testing.T, protocol int) {
// Define three accounts to simulate transactions with
acc1Key, _ := crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
acc2Key, _ := crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
acc1Addr := crypto.PubkeyToAddress(acc1Key.PublicKey)
acc2Addr := crypto.PubkeyToAddress(acc2Key.PublicKey)
// Create a chain generator with some simple transactions (blatantly stolen from @fjl/chain_makerts_test)
generator := func(i int, block *core.BlockGen) {
switch i {
case 0:
// In block 1, the test bank sends account #1 some ether.
tx, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), params.TxGas, nil, nil).SignECDSA(testBankKey)
block.AddTx(tx)
case 1:
// In block 2, the test bank sends some more ether to account #1.
// acc1Addr passes it on to account #2.
tx1, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(testBankKey)
tx2, _ := types.NewTransaction(block.TxNonce(acc1Addr), acc2Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(acc1Key)
block.AddTx(tx1)
block.AddTx(tx2)
case 2:
// Block 3 is empty but was mined by account #2.
block.SetCoinbase(acc2Addr)
block.SetExtra([]byte("yeehaw"))
case 3:
// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
b2 := block.PrevBlock(1).Header()
b2.Extra = []byte("foo")
block.AddUncle(b2)
b3 := block.PrevBlock(2).Header()
b3.Extra = []byte("foo")
block.AddUncle(b3)
}
}
// Assemble the test environment
pm := newTestProtocolManager(4, generator, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Fetch for now the entire chain db
hashes := []common.Hash{}
for _, key := range pm.chaindb.(*ethdb.MemDatabase).Keys() {
hashes = append(hashes, common.BytesToHash(key))
}
p2p.Send(peer.app, 0x0d, hashes)
msg, err := peer.app.ReadMsg()
if err != nil {
t.Fatalf("failed to read node data response: %v", err)
}
if msg.Code != 0x0e {
t.Fatalf("response packet code mismatch: have %x, want %x", msg.Code, 0x0c)
}
var data [][]byte
if err := msg.Decode(&data); err != nil {
t.Fatalf("failed to decode response node data: %v", err)
}
// Verify that all hashes correspond to the requested data, and reconstruct a state tree
for i, want := range hashes {
if hash := crypto.Sha3Hash(data[i]); hash != want {
fmt.Errorf("data hash mismatch: have %x, want %x", hash, want)
}
}
statedb, _ := ethdb.NewMemDatabase()
for i := 0; i < len(data); i++ {
statedb.Put(hashes[i].Bytes(), data[i])
}
accounts := []common.Address{testBankAddress, acc1Addr, acc2Addr}
for i := uint64(0); i <= pm.chainman.CurrentBlock().NumberU64(); i++ {
trie := state.New(pm.chainman.GetBlockByNumber(i).Root(), statedb)
for j, acc := range accounts {
bw := pm.chainman.State().GetBalance(acc)
bh := trie.GetBalance(acc)
if (bw != nil && bh == nil) || (bw == nil && bh != nil) {
t.Errorf("test %d, account %d: balance mismatch: have %v, want %v", i, j, bh, bw)
}
if bw != nil && bh != nil && bw.Cmp(bw) != 0 {
t.Errorf("test %d, account %d: balance mismatch: have %v, want %v", i, j, bh, bw)
}
}
}
}
// Tests that the transaction receipts can be retrieved based on hashes.
func TestGetReceipt63(t *testing.T) { testGetReceipt(t, 63) }
func TestGetReceipt64(t *testing.T) { testGetReceipt(t, 64) }
func testGetReceipt(t *testing.T, protocol int) {
// Define three accounts to simulate transactions with
acc1Key, _ := crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
acc2Key, _ := crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
acc1Addr := crypto.PubkeyToAddress(acc1Key.PublicKey)
acc2Addr := crypto.PubkeyToAddress(acc2Key.PublicKey)
// Create a chain generator with some simple transactions (blatantly stolen from @fjl/chain_makerts_test)
generator := func(i int, block *core.BlockGen) {
switch i {
case 0:
// In block 1, the test bank sends account #1 some ether.
tx, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), params.TxGas, nil, nil).SignECDSA(testBankKey)
block.AddTx(tx)
case 1:
// In block 2, the test bank sends some more ether to account #1.
// acc1Addr passes it on to account #2.
tx1, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(testBankKey)
tx2, _ := types.NewTransaction(block.TxNonce(acc1Addr), acc2Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(acc1Key)
block.AddTx(tx1)
block.AddTx(tx2)
case 2:
// Block 3 is empty but was mined by account #2.
block.SetCoinbase(acc2Addr)
block.SetExtra([]byte("yeehaw"))
case 3:
// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
b2 := block.PrevBlock(1).Header()
b2.Extra = []byte("foo")
block.AddUncle(b2)
b3 := block.PrevBlock(2).Header()
b3.Extra = []byte("foo")
block.AddUncle(b3)
}
}
// Assemble the test environment
pm := newTestProtocolManager(4, generator, nil)
peer, _ := newTestPeer("peer", protocol, pm, true)
defer peer.close()
// Collect the hashes to request, and the response to expect
hashes := []common.Hash{}
for i := uint64(0); i <= pm.chainman.CurrentBlock().NumberU64(); i++ {
for _, tx := range pm.chainman.GetBlockByNumber(i).Transactions() {
hashes = append(hashes, tx.Hash())
}
}
receipts := make([]*types.Receipt, len(hashes))
for i, hash := range hashes {
receipts[i] = core.GetReceipt(pm.chaindb, hash)
}
// Send the hash request and verify the response
p2p.Send(peer.app, 0x0f, hashes)
if err := p2p.ExpectMsg(peer.app, 0x10, receipts); err != nil {
t.Errorf("receipts mismatch: %v", err)
}
}