FedP2P/client_test.go

661 lines
16 KiB
Go

package torrent
import (
"encoding/binary"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"os"
"path/filepath"
"sync"
"testing"
"time"
_ "github.com/anacrolix/envpprof"
"github.com/anacrolix/missinggo"
. "github.com/anacrolix/missinggo"
"github.com/anacrolix/missinggo/filecache"
"github.com/anacrolix/utp"
"github.com/bradfitz/iter"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/anacrolix/torrent/bencode"
"github.com/anacrolix/torrent/data/pieceStore"
"github.com/anacrolix/torrent/data/pieceStore/dataBackend/fileCache"
"github.com/anacrolix/torrent/dht"
"github.com/anacrolix/torrent/internal/testutil"
"github.com/anacrolix/torrent/iplist"
"github.com/anacrolix/torrent/metainfo"
)
func init() {
log.SetFlags(log.LstdFlags | log.Llongfile)
}
var TestingConfig = Config{
ListenAddr: "localhost:0",
NoDHT: true,
DisableTrackers: true,
NoDefaultBlocklist: true,
DisableMetainfoCache: true,
DataDir: filepath.Join(os.TempDir(), "anacrolix"),
}
func TestClientDefault(t *testing.T) {
cl, err := NewClient(&TestingConfig)
if err != nil {
t.Fatal(err)
}
cl.Close()
}
func TestAddDropTorrent(t *testing.T) {
cl, err := NewClient(&TestingConfig)
if err != nil {
t.Fatal(err)
}
defer cl.Close()
dir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(dir)
tt, new, err := cl.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
if err != nil {
t.Fatal(err)
}
if !new {
t.FailNow()
}
tt.Drop()
}
func TestAddTorrentNoSupportedTrackerSchemes(t *testing.T) {
t.SkipNow()
}
func TestAddTorrentNoUsableURLs(t *testing.T) {
t.SkipNow()
}
func TestAddPeersToUnknownTorrent(t *testing.T) {
t.SkipNow()
}
func TestPieceHashSize(t *testing.T) {
if pieceHash.Size() != 20 {
t.FailNow()
}
}
func TestTorrentInitialState(t *testing.T) {
dir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(dir)
tor, err := newTorrent(func() (ih InfoHash) {
missinggo.CopyExact(ih[:], mi.Info.Hash)
return
}())
if err != nil {
t.Fatal(err)
}
tor.chunkSize = 2
err = tor.setMetadata(&mi.Info.Info, mi.Info.Bytes)
if err != nil {
t.Fatal(err)
}
if len(tor.Pieces) != 3 {
t.Fatal("wrong number of pieces")
}
p := &tor.Pieces[0]
tor.pendAllChunkSpecs(0)
assert.EqualValues(t, 3, p.numPendingChunks())
assert.EqualValues(t, chunkSpec{4, 1}, chunkIndexSpec(2, tor.pieceLength(0), tor.chunkSize))
}
func TestUnmarshalPEXMsg(t *testing.T) {
var m peerExchangeMessage
if err := bencode.Unmarshal([]byte("d5:added12:\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0ce"), &m); err != nil {
t.Fatal(err)
}
if len(m.Added) != 2 {
t.FailNow()
}
if m.Added[0].Port != 0x506 {
t.FailNow()
}
}
func TestReducedDialTimeout(t *testing.T) {
for _, _case := range []struct {
Max time.Duration
HalfOpenLimit int
PendingPeers int
ExpectedReduced time.Duration
}{
{nominalDialTimeout, 40, 0, nominalDialTimeout},
{nominalDialTimeout, 40, 1, nominalDialTimeout},
{nominalDialTimeout, 40, 39, nominalDialTimeout},
{nominalDialTimeout, 40, 40, nominalDialTimeout / 2},
{nominalDialTimeout, 40, 80, nominalDialTimeout / 3},
{nominalDialTimeout, 40, 4000, nominalDialTimeout / 101},
} {
reduced := reducedDialTimeout(_case.Max, _case.HalfOpenLimit, _case.PendingPeers)
expected := _case.ExpectedReduced
if expected < minDialTimeout {
expected = minDialTimeout
}
if reduced != expected {
t.Fatalf("expected %s, got %s", _case.ExpectedReduced, reduced)
}
}
}
func TestUTPRawConn(t *testing.T) {
l, err := utp.NewSocket("udp", "")
if err != nil {
t.Fatal(err)
}
defer l.Close()
go func() {
for {
_, err := l.Accept()
if err != nil {
break
}
}
}()
// Connect a UTP peer to see if the RawConn will still work.
s, _ := utp.NewSocket("udp", "")
defer s.Close()
utpPeer, err := s.Dial(fmt.Sprintf("localhost:%d", missinggo.AddrPort(l.Addr())))
if err != nil {
t.Fatalf("error dialing utp listener: %s", err)
}
defer utpPeer.Close()
peer, err := net.ListenPacket("udp", ":0")
if err != nil {
t.Fatal(err)
}
defer peer.Close()
msgsReceived := 0
// How many messages to send. I've set this to double the channel buffer
// size in the raw packetConn.
const N = 200
readerStopped := make(chan struct{})
// The reader goroutine.
go func() {
defer close(readerStopped)
b := make([]byte, 500)
for i := 0; i < N; i++ {
n, _, err := l.ReadFrom(b)
if err != nil {
t.Fatalf("error reading from raw conn: %s", err)
}
msgsReceived++
var d int
fmt.Sscan(string(b[:n]), &d)
if d != i {
log.Printf("got wrong number: expected %d, got %d", i, d)
}
}
}()
udpAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("localhost:%d", missinggo.AddrPort(l.Addr())))
if err != nil {
t.Fatal(err)
}
for i := 0; i < N; i++ {
_, err := peer.WriteTo([]byte(fmt.Sprintf("%d", i)), udpAddr)
if err != nil {
t.Fatal(err)
}
time.Sleep(time.Microsecond)
}
select {
case <-readerStopped:
case <-time.After(time.Second):
t.Fatal("reader timed out")
}
if msgsReceived != N {
t.Fatalf("messages received: %d", msgsReceived)
}
}
func TestTwoClientsArbitraryPorts(t *testing.T) {
for i := 0; i < 2; i++ {
cl, err := NewClient(&TestingConfig)
if err != nil {
t.Fatal(err)
}
defer cl.Close()
}
}
func TestAddDropManyTorrents(t *testing.T) {
cl, _ := NewClient(&TestingConfig)
defer cl.Close()
for i := range iter.N(1000) {
var spec TorrentSpec
binary.PutVarint(spec.InfoHash[:], int64(i))
tt, new, err := cl.AddTorrentSpec(&spec)
if err != nil {
t.Error(err)
}
if !new {
t.FailNow()
}
defer tt.Drop()
}
}
func TestClientTransfer(t *testing.T) {
greetingTempDir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(greetingTempDir)
cfg := TestingConfig
cfg.Seed = true
cfg.DataDir = greetingTempDir
seeder, err := NewClient(&cfg)
if err != nil {
t.Fatal(err)
}
defer seeder.Close()
seeder.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
leecherDataDir, err := ioutil.TempDir("", "")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(leecherDataDir)
// cfg.TorrentDataOpener = func(info *metainfo.Info) (data.Data, error) {
// return blob.TorrentData(info, leecherDataDir), nil
// }
// blobStore := blob.NewStore(leecherDataDir)
// cfg.TorrentDataOpener = func(info *metainfo.Info) Data {
// return blobStore.OpenTorrent(info)
// }
cfg.TorrentDataOpener = func() TorrentDataOpener {
fc, err := filecache.NewCache(leecherDataDir)
require.NoError(t, err)
store := pieceStore.New(fileCacheDataBackend.New(fc))
return func(mi *metainfo.Info) Data {
return store.OpenTorrentData(mi)
}
}()
leecher, _ := NewClient(&cfg)
defer leecher.Close()
leecherGreeting, _, _ := leecher.AddTorrentSpec(func() (ret *TorrentSpec) {
ret = TorrentSpecFromMetaInfo(mi)
ret.ChunkSize = 2
return
}())
// TODO: The piece state publishing is kinda jammed in here until I have a
// more thorough test.
go func() {
s := leecherGreeting.SubscribePieceStateChanges()
defer s.Close()
for i := range s.Values {
log.Print(i)
}
log.Print("finished")
}()
leecherGreeting.AddPeers([]Peer{
Peer{
IP: missinggo.AddrIP(seeder.ListenAddr()),
Port: missinggo.AddrPort(seeder.ListenAddr()),
},
})
r := leecherGreeting.NewReader()
defer r.Close()
_greeting, err := ioutil.ReadAll(r)
if err != nil {
t.Fatalf("%q %s", string(_greeting), err)
}
greeting := string(_greeting)
if greeting != testutil.GreetingFileContents {
t.Fatal(":(")
}
}
// Check that after completing leeching, a leecher transitions to a seeding
// correctly. Connected in a chain like so: Seeder <-> Leecher <-> LeecherLeecher.
func TestSeedAfterDownloading(t *testing.T) {
greetingTempDir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(greetingTempDir)
cfg := TestingConfig
cfg.Seed = true
cfg.DataDir = greetingTempDir
seeder, err := NewClient(&cfg)
defer seeder.Close()
seeder.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
cfg.DataDir, err = ioutil.TempDir("", "")
require.NoError(t, err)
defer os.RemoveAll(cfg.DataDir)
leecher, _ := NewClient(&cfg)
defer leecher.Close()
cfg.Seed = false
cfg.TorrentDataOpener = nil
cfg.DataDir, err = ioutil.TempDir("", "")
require.NoError(t, err)
defer os.RemoveAll(cfg.DataDir)
leecherLeecher, _ := NewClient(&cfg)
defer leecherLeecher.Close()
leecherGreeting, _, _ := leecher.AddTorrentSpec(func() (ret *TorrentSpec) {
ret = TorrentSpecFromMetaInfo(mi)
ret.ChunkSize = 2
return
}())
llg, _, _ := leecherLeecher.AddTorrentSpec(func() (ret *TorrentSpec) {
ret = TorrentSpecFromMetaInfo(mi)
ret.ChunkSize = 3
return
}())
// Simultaneously DownloadAll in Leecher, and read the contents
// consecutively in LeecherLeecher. This non-deterministically triggered a
// case where the leecher wouldn't unchoke the LeecherLeecher.
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
r := llg.NewReader()
defer r.Close()
b, err := ioutil.ReadAll(r)
require.NoError(t, err)
require.EqualValues(t, testutil.GreetingFileContents, b)
}()
leecherGreeting.AddPeers([]Peer{
Peer{
IP: missinggo.AddrIP(seeder.ListenAddr()),
Port: missinggo.AddrPort(seeder.ListenAddr()),
},
Peer{
IP: missinggo.AddrIP(leecherLeecher.ListenAddr()),
Port: missinggo.AddrPort(leecherLeecher.ListenAddr()),
},
})
wg.Add(1)
go func() {
defer wg.Done()
leecherGreeting.DownloadAll()
leecher.WaitAll()
}()
wg.Wait()
}
func TestReadaheadPieces(t *testing.T) {
for _, case_ := range []struct {
readaheadBytes, pieceLength int64
readaheadPieces int
}{
{5 * 1024 * 1024, 256 * 1024, 19},
{5 * 1024 * 1024, 5 * 1024 * 1024, 1},
{5*1024*1024 - 1, 5 * 1024 * 1024, 1},
{5 * 1024 * 1024, 5*1024*1024 - 1, 2},
{0, 5 * 1024 * 1024, 0},
{5 * 1024 * 1024, 1048576, 4},
} {
pieces := readaheadPieces(case_.readaheadBytes, case_.pieceLength)
assert.Equal(t, case_.readaheadPieces, pieces, "%v", case_)
}
}
func TestMergingTrackersByAddingSpecs(t *testing.T) {
cl, _ := NewClient(&TestingConfig)
defer cl.Close()
spec := TorrentSpec{}
T, new, _ := cl.AddTorrentSpec(&spec)
if !new {
t.FailNow()
}
spec.Trackers = [][]string{{"http://a"}, {"udp://b"}}
_, new, _ = cl.AddTorrentSpec(&spec)
if new {
t.FailNow()
}
assert.EqualValues(t, T.Trackers()[0][0].URL(), "http://a")
assert.EqualValues(t, T.Trackers()[1][0].URL(), "udp://b")
}
type badData struct{}
func (me badData) Close() {}
func (me badData) WriteAt(b []byte, off int64) (int, error) {
return 0, nil
}
func (me badData) WriteSectionTo(w io.Writer, off, n int64) (int64, error) {
return 0, nil
}
func (me badData) PieceComplete(piece int) bool {
return true
}
func (me badData) PieceCompleted(piece int) error {
return nil
}
func (me badData) ReadAt(b []byte, off int64) (n int, err error) {
if off >= 5 {
err = io.EOF
return
}
n = copy(b, []byte("hello")[off:])
return
}
// We read from a piece which is marked completed, but is missing data.
func TestCompletedPieceWrongSize(t *testing.T) {
cfg := TestingConfig
cfg.TorrentDataOpener = func(*metainfo.Info) Data {
return badData{}
}
cl, _ := NewClient(&cfg)
defer cl.Close()
tt, new, err := cl.AddTorrentSpec(&TorrentSpec{
Info: &metainfo.InfoEx{
Info: metainfo.Info{
PieceLength: 15,
Pieces: make([]byte, 20),
Files: []metainfo.FileInfo{
metainfo.FileInfo{Path: []string{"greeting"}, Length: 13},
},
},
},
})
if err != nil {
t.Fatal(err)
}
if !new {
t.Fatal("expected new")
}
r := tt.NewReader()
defer r.Close()
b := make([]byte, 20)
n, err := io.ReadFull(r, b)
if n != 5 || err != io.ErrUnexpectedEOF {
t.Fatal(n, err)
}
defer tt.Drop()
}
func BenchmarkAddLargeTorrent(b *testing.B) {
cfg := TestingConfig
cfg.DisableTCP = true
cfg.DisableUTP = true
cfg.ListenAddr = "redonk"
cl, _ := NewClient(&cfg)
defer cl.Close()
for range iter.N(b.N) {
t, err := cl.AddTorrentFromFile("testdata/bootstrap.dat.torrent")
if err != nil {
b.Fatal(err)
}
t.Drop()
}
}
func TestResponsive(t *testing.T) {
seederDataDir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(seederDataDir)
cfg := TestingConfig
cfg.Seed = true
cfg.DataDir = seederDataDir
seeder, err := NewClient(&cfg)
require.Nil(t, err)
defer seeder.Close()
seeder.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
leecherDataDir, err := ioutil.TempDir("", "")
require.Nil(t, err)
defer os.RemoveAll(leecherDataDir)
cfg = TestingConfig
cfg.DataDir = leecherDataDir
leecher, err := NewClient(&cfg)
require.Nil(t, err)
defer leecher.Close()
leecherTorrent, _, _ := leecher.AddTorrentSpec(func() (ret *TorrentSpec) {
ret = TorrentSpecFromMetaInfo(mi)
ret.ChunkSize = 2
return
}())
leecherTorrent.AddPeers([]Peer{
Peer{
IP: missinggo.AddrIP(seeder.ListenAddr()),
Port: missinggo.AddrPort(seeder.ListenAddr()),
},
})
reader := leecherTorrent.NewReader()
reader.SetReadahead(0)
reader.SetResponsive()
b := make([]byte, 2)
_, err = reader.ReadAt(b, 3)
assert.Nil(t, err)
assert.EqualValues(t, "lo", string(b))
n, err := reader.ReadAt(b, 11)
assert.Nil(t, err)
assert.EqualValues(t, 2, n)
assert.EqualValues(t, "d\n", string(b))
}
func TestTorrentDroppedDuringResponsiveRead(t *testing.T) {
seederDataDir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(seederDataDir)
cfg := TestingConfig
cfg.Seed = true
cfg.DataDir = seederDataDir
seeder, err := NewClient(&cfg)
require.Nil(t, err)
defer seeder.Close()
seeder.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
leecherDataDir, err := ioutil.TempDir("", "")
require.Nil(t, err)
defer os.RemoveAll(leecherDataDir)
cfg = TestingConfig
cfg.DataDir = leecherDataDir
leecher, err := NewClient(&cfg)
require.Nil(t, err)
defer leecher.Close()
leecherTorrent, _, _ := leecher.AddTorrentSpec(func() (ret *TorrentSpec) {
ret = TorrentSpecFromMetaInfo(mi)
ret.ChunkSize = 2
return
}())
leecherTorrent.AddPeers([]Peer{
Peer{
IP: missinggo.AddrIP(seeder.ListenAddr()),
Port: missinggo.AddrPort(seeder.ListenAddr()),
},
})
reader := leecherTorrent.NewReader()
reader.SetReadahead(0)
reader.SetResponsive()
b := make([]byte, 2)
_, err = reader.ReadAt(b, 3)
assert.Nil(t, err)
assert.EqualValues(t, "lo", string(b))
go leecherTorrent.Drop()
n, err := reader.ReadAt(b, 11)
assert.EqualError(t, err, "torrent closed")
assert.EqualValues(t, 0, n)
}
func TestDHTInheritBlocklist(t *testing.T) {
ipl := iplist.New(nil)
require.NotNil(t, ipl)
cl, err := NewClient(&Config{
IPBlocklist: iplist.New(nil),
DHTConfig: &dht.ServerConfig{},
})
require.NoError(t, err)
defer cl.Close()
require.Equal(t, ipl, cl.DHT().IPBlocklist())
}
// Check that stuff is merged in subsequent AddTorrentSpec for the same
// infohash.
func TestAddTorrentSpecMerging(t *testing.T) {
cl, err := NewClient(&TestingConfig)
require.NoError(t, err)
defer cl.Close()
dir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(dir)
var ts TorrentSpec
missinggo.CopyExact(&ts.InfoHash, mi.Info.Hash)
tt, new, err := cl.AddTorrentSpec(&ts)
require.NoError(t, err)
require.True(t, new)
require.Nil(t, tt.Info())
_, new, err = cl.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
require.NoError(t, err)
require.False(t, new)
require.NotNil(t, tt.Info())
}
// Check that torrent Info is obtained from the metainfo file cache.
func TestAddTorrentMetainfoInCache(t *testing.T) {
cfg := TestingConfig
cfg.DisableMetainfoCache = false
cfg.ConfigDir, _ = ioutil.TempDir(os.TempDir(), "")
defer os.RemoveAll(cfg.ConfigDir)
cl, err := NewClient(&cfg)
require.NoError(t, err)
defer cl.Close()
dir, mi := testutil.GreetingTestTorrent()
defer os.RemoveAll(dir)
tt, new, err := cl.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
require.NoError(t, err)
require.True(t, new)
require.NotNil(t, tt.Info())
_, err = os.Stat(filepath.Join(cfg.ConfigDir, "torrents", fmt.Sprintf("%x.torrent", mi.Info.Hash)))
require.NoError(t, err)
// Contains only the infohash.
var ts TorrentSpec
missinggo.CopyExact(&ts.InfoHash, mi.Info.Hash)
_, ok := cl.Torrent(ts.InfoHash)
require.True(t, ok)
tt.Drop()
_, ok = cl.Torrent(ts.InfoHash)
require.False(t, ok)
tt, new, err = cl.AddTorrentSpec(&ts)
require.NoError(t, err)
require.True(t, new)
// Obtained from the metainfo cache.
require.NotNil(t, tt.Info())
}
func TestTorrentDroppedBeforeGotInfo(t *testing.T) {
dir, mi := testutil.GreetingTestTorrent()
os.RemoveAll(dir)
cl, _ := NewClient(&TestingConfig)
defer cl.Close()
var ts TorrentSpec
CopyExact(&ts.InfoHash, mi.Info.Hash)
tt, _, _ := cl.AddTorrentSpec(&ts)
tt.Drop()
assert.EqualValues(t, 0, len(cl.Torrents()))
select {
case <-tt.GotInfo():
t.FailNow()
default:
}
}