eth/fetcher: add tests for peer dropping

This commit is contained in:
Péter Szilágyi 2023-10-06 15:16:46 +03:00
parent c44bcfb71b
commit 661b7b288a
2 changed files with 404 additions and 31 deletions

View file

@ -458,6 +458,12 @@ func (f *TxFetcher) loop() {
// yet downloading, add the peer as an alternate origin in the
// waiting list.
if f.waitlist[hash] != nil {
// Ignore double announcements from the same peer. This is
// especially important if metadata is also passed along to
// prevent malicious peers flip-flopping good/bad values.
if _, ok := f.waitlist[hash][ann.origin]; ok {
continue
}
f.waitlist[hash][ann.origin] = struct{}{}
if waitslots := f.waitslots[ann.origin]; waitslots != nil {

View file

@ -41,9 +41,20 @@ var (
testTxsHashes = []common.Hash{testTxs[0].Hash(), testTxs[1].Hash(), testTxs[2].Hash(), testTxs[3].Hash()}
)
type announce struct {
hash common.Hash
kind *byte
size *uint32
}
func typeptr(t byte) *byte { b := byte(t); return &b }
func sizeptr(n uint32) *uint32 { return &n }
type doTxNotify struct {
peer string
hashes []common.Hash
types []byte
sizes []uint32
}
type doTxEnqueue struct {
peer string
@ -57,7 +68,14 @@ type doWait struct {
type doDrop string
type doFunc func()
type isWaitingWithMeta map[string][]announce
type isWaiting map[string][]common.Hash
type isScheduledWithMeta struct {
tracking map[string][]announce
fetching map[string][]common.Hash
dangling map[string][]common.Hash
}
type isScheduled struct {
tracking map[string][]common.Hash
fetching map[string][]common.Hash
@ -163,6 +181,212 @@ func TestTransactionFetcherWaiting(t *testing.T) {
})
}
// Tests that transaction announcements with associated metadata are added to a
// waitlist, and none of them are scheduled for retrieval until the wait expires.
//
// This test is an extended version of TestTransactionFetcherWaiting. It's mostly
// to cover the metadata checkes without bloating up the basic behavioral tests
// with all the useless extra fields.
func TestTransactionFetcherWaitingWithMeta(t *testing.T) {
testTransactionFetcherParallel(t, txFetcherTest{
init: func() *TxFetcher {
return NewTxFetcher(
func(common.Hash) bool { return false },
nil,
func(string, []common.Hash) error { return nil },
nil,
)
},
steps: []interface{}{
// Initial announcement to get something into the waitlist
doTxNotify{peer: "A", hashes: []common.Hash{{0x01}, {0x02}}, types: []byte{types.LegacyTxType, types.LegacyTxType}, sizes: []uint32{111, 222}},
isWaitingWithMeta(map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
},
}),
// Announce from a new peer to check that no overwrite happens
doTxNotify{peer: "B", hashes: []common.Hash{{0x03}, {0x04}}, types: []byte{types.LegacyTxType, types.LegacyTxType}, sizes: []uint32{333, 444}},
isWaitingWithMeta(map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
}),
// Announce clashing hashes but unique new peer
doTxNotify{peer: "C", hashes: []common.Hash{{0x01}, {0x04}}, types: []byte{types.LegacyTxType, types.LegacyTxType}, sizes: []uint32{111, 444}},
isWaitingWithMeta(map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"C": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
}),
// Announce existing and clashing hashes from existing peer. Clashes
// should not overwrite previous announcements.
doTxNotify{peer: "A", hashes: []common.Hash{{0x01}, {0x03}, {0x05}}, types: []byte{types.LegacyTxType, types.LegacyTxType, types.LegacyTxType}, sizes: []uint32{999, 333, 555}},
isWaitingWithMeta(map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x05}, typeptr(types.LegacyTxType), sizeptr(555)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"C": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
}),
// Announce clashing hashes with conflicting metadata. Somebody will
// be in the wrong, but we don't know yet who.
doTxNotify{peer: "D", hashes: []common.Hash{{0x01}, {0x02}}, types: []byte{types.LegacyTxType, types.BlobTxType}, sizes: []uint32{999, 222}},
isWaitingWithMeta(map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x05}, typeptr(types.LegacyTxType), sizeptr(555)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"C": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"D": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(999)},
{common.Hash{0x02}, typeptr(types.BlobTxType), sizeptr(222)},
},
}),
isScheduled{tracking: nil, fetching: nil},
// Wait for the arrival timeout which should move all expired items
// from the wait list to the scheduler
doWait{time: txArriveTimeout, step: true},
isWaiting(nil),
isScheduledWithMeta{
tracking: map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x05}, typeptr(types.LegacyTxType), sizeptr(555)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"C": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"D": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(999)},
{common.Hash{0x02}, typeptr(types.BlobTxType), sizeptr(222)},
},
},
fetching: map[string][]common.Hash{ // Depends on deterministic test randomizer
"A": {{0x03}, {0x05}},
"C": {{0x01}, {0x04}},
"D": {{0x02}},
},
},
// Queue up a non-fetchable transaction and then trigger it with a new
// peer (weird case to test 1 line in the fetcher)
doTxNotify{peer: "C", hashes: []common.Hash{{0x06}, {0x07}}, types: []byte{types.LegacyTxType, types.LegacyTxType}, sizes: []uint32{666, 777}},
isWaitingWithMeta(map[string][]announce{
"C": {
{common.Hash{0x06}, typeptr(types.LegacyTxType), sizeptr(666)},
{common.Hash{0x07}, typeptr(types.LegacyTxType), sizeptr(777)},
},
}),
doWait{time: txArriveTimeout, step: true},
isScheduledWithMeta{
tracking: map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x05}, typeptr(types.LegacyTxType), sizeptr(555)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"C": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
{common.Hash{0x06}, typeptr(types.LegacyTxType), sizeptr(666)},
{common.Hash{0x07}, typeptr(types.LegacyTxType), sizeptr(777)},
},
"D": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(999)},
{common.Hash{0x02}, typeptr(types.BlobTxType), sizeptr(222)},
},
},
fetching: map[string][]common.Hash{
"A": {{0x03}, {0x05}},
"C": {{0x01}, {0x04}},
"D": {{0x02}},
},
},
doTxNotify{peer: "E", hashes: []common.Hash{{0x06}, {0x07}}, types: []byte{types.LegacyTxType, types.LegacyTxType}, sizes: []uint32{666, 777}},
isScheduledWithMeta{
tracking: map[string][]announce{
"A": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x02}, typeptr(types.LegacyTxType), sizeptr(222)},
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x05}, typeptr(types.LegacyTxType), sizeptr(555)},
},
"B": {
{common.Hash{0x03}, typeptr(types.LegacyTxType), sizeptr(333)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
},
"C": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(111)},
{common.Hash{0x04}, typeptr(types.LegacyTxType), sizeptr(444)},
{common.Hash{0x06}, typeptr(types.LegacyTxType), sizeptr(666)},
{common.Hash{0x07}, typeptr(types.LegacyTxType), sizeptr(777)},
},
"D": {
{common.Hash{0x01}, typeptr(types.LegacyTxType), sizeptr(999)},
{common.Hash{0x02}, typeptr(types.BlobTxType), sizeptr(222)},
},
"E": {
{common.Hash{0x06}, typeptr(types.LegacyTxType), sizeptr(666)},
{common.Hash{0x07}, typeptr(types.LegacyTxType), sizeptr(777)},
},
},
fetching: map[string][]common.Hash{
"A": {{0x03}, {0x05}},
"C": {{0x01}, {0x04}},
"D": {{0x02}},
"E": {{0x06}, {0x07}},
},
},
},
})
}
// Tests that transaction announcements skip the waiting list if they are
// already scheduled.
func TestTransactionFetcherSkipWaiting(t *testing.T) {
@ -1142,7 +1366,69 @@ func TestTransactionFetcherDropRescheduling(t *testing.T) {
// Tests that announced transactions with the wrong transaction type or size will
// result in a dropped peer.
func TestInvalidAnnounceMetadata(t *testing.T) {
drop := make(chan string, 2)
testTransactionFetcherParallel(t, txFetcherTest{
init: func() *TxFetcher {
return NewTxFetcher(
func(common.Hash) bool { return false },
func(txs []*types.Transaction) []error {
return make([]error, len(txs))
},
func(string, []common.Hash) error { return nil },
func(peer string) { drop <- peer },
)
},
steps: []interface{}{
// Initial announcement to get something into the waitlist
doTxNotify{peer: "A", hashes: []common.Hash{testTxsHashes[0], testTxsHashes[1]}, types: []byte{testTxs[0].Type(), testTxs[1].Type()}, sizes: []uint32{uint32(testTxs[0].Size()), uint32(testTxs[1].Size())}},
isWaitingWithMeta(map[string][]announce{
"A": {
{testTxsHashes[0], typeptr(testTxs[0].Type()), sizeptr(uint32(testTxs[0].Size()))},
{testTxsHashes[1], typeptr(testTxs[1].Type()), sizeptr(uint32(testTxs[1].Size()))},
},
}),
// Announce from new peers conflicting transactions
doTxNotify{peer: "B", hashes: []common.Hash{testTxsHashes[0]}, types: []byte{testTxs[0].Type()}, sizes: []uint32{1024 + uint32(testTxs[0].Size())}},
doTxNotify{peer: "C", hashes: []common.Hash{testTxsHashes[1]}, types: []byte{1 + testTxs[1].Type()}, sizes: []uint32{uint32(testTxs[1].Size())}},
isWaitingWithMeta(map[string][]announce{
"A": {
{testTxsHashes[0], typeptr(testTxs[0].Type()), sizeptr(uint32(testTxs[0].Size()))},
{testTxsHashes[1], typeptr(testTxs[1].Type()), sizeptr(uint32(testTxs[1].Size()))},
},
"B": {
{testTxsHashes[0], typeptr(testTxs[0].Type()), sizeptr(1024 + uint32(testTxs[0].Size()))},
},
"C": {
{testTxsHashes[1], typeptr(1 + testTxs[1].Type()), sizeptr(uint32(testTxs[1].Size()))},
},
}),
// Schedule all the transactions for retrieval
doWait{time: txArriveTimeout, step: true},
isWaitingWithMeta(nil),
isScheduledWithMeta{
tracking: map[string][]announce{
"A": {
{testTxsHashes[0], typeptr(testTxs[0].Type()), sizeptr(uint32(testTxs[0].Size()))},
{testTxsHashes[1], typeptr(testTxs[1].Type()), sizeptr(uint32(testTxs[1].Size()))},
},
"B": {
{testTxsHashes[0], typeptr(testTxs[0].Type()), sizeptr(1024 + uint32(testTxs[0].Size()))},
},
"C": {
{testTxsHashes[1], typeptr(1 + testTxs[1].Type()), sizeptr(uint32(testTxs[1].Size()))},
},
},
fetching: map[string][]common.Hash{
"A": {testTxsHashes[0]},
"C": {testTxsHashes[1]},
},
},
// Deliver the transactions and wait for B to be dropped
doTxEnqueue{peer: "A", txs: []*types.Transaction{testTxs[0], testTxs[1]}},
doFunc(func() { <-drop }),
doFunc(func() { <-drop }),
},
})
}
// This test reproduces a crash caught by the fuzzer. The root cause was a
@ -1303,9 +1589,34 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
// Crunch through all the test steps and execute them
for i, step := range tt.steps {
// Auto-expand certain steps to ones with metadata
switch old := step.(type) {
case isWaiting:
new := make(isWaitingWithMeta)
for peer, hashes := range old {
for _, hash := range hashes {
new[peer] = append(new[peer], announce{hash, nil, nil})
}
}
step = new
case isScheduled:
new := isScheduledWithMeta{
tracking: make(map[string][]announce),
fetching: old.fetching,
dangling: old.dangling,
}
for peer, hashes := range old.tracking {
for _, hash := range hashes {
new.tracking[peer] = append(new.tracking[peer], announce{hash, nil, nil})
}
}
step = new
}
// Process the original or expanded steps
switch step := step.(type) {
case doTxNotify:
if err := fetcher.Notify(step.peer, nil, nil, step.hashes); err != nil {
if err := fetcher.Notify(step.peer, step.types, step.sizes, step.hashes); err != nil {
t.Errorf("step %d: %v", i, err)
}
<-wait // Fetcher needs to process this, wait until it's done
@ -1336,24 +1647,34 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
case doFunc:
step()
case isWaiting:
case isWaitingWithMeta:
// We need to check that the waiting list (stage 1) internals
// match with the expected set. Check the peer->hash mappings
// first.
for peer, hashes := range step {
for peer, announces := range step {
waiting := fetcher.waitslots[peer]
if waiting == nil {
t.Errorf("step %d: peer %s missing from waitslots", i, peer)
continue
}
for _, hash := range hashes {
if _, ok := waiting[hash]; !ok {
t.Errorf("step %d, peer %s: hash %x missing from waitslots", i, peer, hash)
for _, ann := range announces {
if meta, ok := waiting[ann.hash]; !ok {
t.Errorf("step %d, peer %s: hash %x missing from waitslots", i, peer, ann.hash)
} else {
if (meta == nil && (ann.kind != nil || ann.size != nil)) ||
(meta != nil && (ann.kind == nil || ann.size == nil)) ||
(meta != nil && (meta.kind != *ann.kind || meta.size != *ann.size)) {
t.Errorf("step %d, peer %s, hash %x: waitslot metadata mismatch: want %v, have %v/%v", i, peer, ann.hash, meta, ann.kind, ann.size)
}
}
}
for hash := range waiting {
if !containsHash(hashes, hash) {
t.Errorf("step %d, peer %s: hash %x extra in waitslots", i, peer, hash)
for hash, meta := range waiting {
ann := announce{hash: hash}
if meta != nil {
ann.kind, ann.size = &meta.kind, &meta.size
}
if !containsAnnounce(announces, ann) {
t.Errorf("step %d, peer %s: announce %v extra in waitslots", i, peer, ann)
}
}
}
@ -1363,13 +1684,13 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
}
}
// Peer->hash sets correct, check the hash->peer and timeout sets
for peer, hashes := range step {
for _, hash := range hashes {
if _, ok := fetcher.waitlist[hash][peer]; !ok {
t.Errorf("step %d, hash %x: peer %s missing from waitlist", i, hash, peer)
for peer, announces := range step {
for _, ann := range announces {
if _, ok := fetcher.waitlist[ann.hash][peer]; !ok {
t.Errorf("step %d, hash %x: peer %s missing from waitlist", i, ann.hash, peer)
}
if _, ok := fetcher.waittime[hash]; !ok {
t.Errorf("step %d: hash %x missing from waittime", i, hash)
if _, ok := fetcher.waittime[ann.hash]; !ok {
t.Errorf("step %d: hash %x missing from waittime", i, ann.hash)
}
}
}
@ -1378,15 +1699,15 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
t.Errorf("step %d, hash %x: empty peerset in waitlist", i, hash)
}
for peer := range peers {
if !containsHash(step[peer], hash) {
if !containsHashInAnnounces(step[peer], hash) {
t.Errorf("step %d, hash %x: peer %s extra in waitlist", i, hash, peer)
}
}
}
for hash := range fetcher.waittime {
var found bool
for _, hashes := range step {
if containsHash(hashes, hash) {
for _, announces := range step {
if containsHashInAnnounces(announces, hash) {
found = true
break
}
@ -1396,23 +1717,33 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
}
}
case isScheduled:
case isScheduledWithMeta:
// Check that all scheduled announces are accounted for and no
// extra ones are present.
for peer, hashes := range step.tracking {
for peer, announces := range step.tracking {
scheduled := fetcher.announces[peer]
if scheduled == nil {
t.Errorf("step %d: peer %s missing from announces", i, peer)
continue
}
for _, hash := range hashes {
if _, ok := scheduled[hash]; !ok {
t.Errorf("step %d, peer %s: hash %x missing from announces", i, peer, hash)
for _, ann := range announces {
if meta, ok := scheduled[ann.hash]; !ok {
t.Errorf("step %d, peer %s: hash %x missing from announces", i, peer, ann.hash)
} else {
if (meta == nil && (ann.kind != nil || ann.size != nil)) ||
(meta != nil && (ann.kind == nil || ann.size == nil)) ||
(meta != nil && (meta.kind != *ann.kind || meta.size != *ann.size)) {
t.Errorf("step %d, peer %s, hash %x: announce metadata mismatch: want %v, have %v/%v", i, peer, ann.hash, meta, ann.kind, ann.size)
}
}
}
for hash := range scheduled {
if !containsHash(hashes, hash) {
t.Errorf("step %d, peer %s: hash %x extra in announces", i, peer, hash)
for hash, meta := range scheduled {
ann := announce{hash: hash}
if meta != nil {
ann.kind, ann.size = &meta.kind, &meta.size
}
if !containsAnnounce(announces, ann) {
t.Errorf("step %d, peer %s: announce %x extra in announces", i, peer, hash)
}
}
}
@ -1512,17 +1843,17 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
// retrieval but not actively being downloaded are tracked only
// in the stage 2 `announced` map.
var queued []common.Hash
for _, hashes := range step.tracking {
for _, hash := range hashes {
for _, announces := range step.tracking {
for _, ann := range announces {
var found bool
for _, hs := range step.fetching {
if containsHash(hs, hash) {
if containsHash(hs, ann.hash) {
found = true
break
}
}
if !found {
queued = append(queued, hash)
queued = append(queued, ann.hash)
}
}
}
@ -1555,6 +1886,42 @@ func testTransactionFetcher(t *testing.T, tt txFetcherTest) {
}
}
// containsAnnounce returns whether an announcement is contained within a slice
// of announcements.
func containsAnnounce(slice []announce, ann announce) bool {
for _, have := range slice {
if have.hash == ann.hash {
if have.kind == nil || ann.kind == nil {
if have.kind != ann.kind {
return false
}
} else if *have.kind != *ann.kind {
return false
}
if have.size == nil || ann.size == nil {
if have.size != ann.size {
return false
}
} else if *have.size != *ann.size {
return false
}
return true
}
}
return false
}
// containsHashInAnnounces returns whether a hash is contained within a slice
// of announcements.
func containsHashInAnnounces(slice []announce, hash common.Hash) bool {
for _, have := range slice {
if have.hash == hash {
return true
}
}
return false
}
// containsHash returns whether a hash is contained within a hash slice.
func containsHash(slice []common.Hash, hash common.Hash) bool {
for _, have := range slice {