peerconn_test.go

   1 package torrent
   2
   3 import (
   4         "io"
   5         "net"
   6         "sync"
   7         "testing"
   8
   9         "github.com/anacrolix/missinggo/pubsub"
  10         "github.com/frankban/quicktest"
  11         "github.com/stretchr/testify/require"
  12
  13         "github.com/anacrolix/torrent/metainfo"
  14         pp "github.com/anacrolix/torrent/peer_protocol"
  15         "github.com/anacrolix/torrent/storage"
  16 )
  17
  18 // Ensure that no race exists between sending a bitfield, and a subsequent
  19 // Have that would potentially alter it.
  20 func TestSendBitfieldThenHave(t *testing.T) {
  21         var cl Client
  22         cl.init(TestingConfig(t))
  23         cl.initLogger()
  24         c := cl.newConnection(nil, false, nil, "io.Pipe", "")
  25         c.setTorrent(cl.newTorrent(metainfo.Hash{}, nil))
  26         if err := c.t.setInfo(&metainfo.Info{Pieces: make([]byte, metainfo.HashSize*3)}); err != nil {
  27                 t.Log(err)
  28         }
  29         r, w := io.Pipe()
  30         //c.r = r
  31         c.w = w
  32         c.startWriter()
  33         c.locker().Lock()
  34         c.t._completedPieces.Add(1)
  35         c.postBitfield( /*[]bool{false, true, false}*/ )
  36         c.locker().Unlock()
  37         c.locker().Lock()
  38         c.have(2)
  39         c.locker().Unlock()
  40         b := make([]byte, 15)
  41         n, err := io.ReadFull(r, b)
  42         c.locker().Lock()
  43         // This will cause connection.writer to terminate.
  44         c.closed.Set()
  45         c.locker().Unlock()
  46         require.NoError(t, err)
  47         require.EqualValues(t, 15, n)
  48         // Here we see that the bitfield doesn't have piece 2 set, as that should
  49         // arrive in the following Have message.
  50         require.EqualValues(t, "\x00\x00\x00\x02\x05@\x00\x00\x00\x05\x04\x00\x00\x00\x02", string(b))
  51 }
  52
  53 type torrentStorage struct {
  54         writeSem sync.Mutex
  55 }
  56
  57 func (me *torrentStorage) Close() error { return nil }
  58
  59 func (me *torrentStorage) Piece(mp metainfo.Piece) storage.PieceImpl {
  60         return me
  61 }
  62
  63 func (me *torrentStorage) Completion() storage.Completion {
  64         return storage.Completion{}
  65 }
  66
  67 func (me *torrentStorage) MarkComplete() error {
  68         return nil
  69 }
  70
  71 func (me *torrentStorage) MarkNotComplete() error {
  72         return nil
  73 }
  74
  75 func (me *torrentStorage) ReadAt([]byte, int64) (int, error) {
  76         panic("shouldn't be called")
  77 }
  78
  79 func (me *torrentStorage) WriteAt(b []byte, _ int64) (int, error) {
  80         if len(b) != defaultChunkSize {
  81                 panic(len(b))
  82         }
  83         me.writeSem.Unlock()
  84         return len(b), nil
  85 }
  86
  87 func BenchmarkConnectionMainReadLoop(b *testing.B) {
  88         c := quicktest.New(b)
  89         var cl Client
  90         cl.init(&ClientConfig{
  91                 DownloadRateLimiter: unlimited,
  92         })
  93         cl.initLogger()
  94         ts := &torrentStorage{}
  95         t := &Torrent{
  96                 cl:                &cl,
  97                 storage:           &storage.Torrent{TorrentImpl: storage.TorrentImpl{Piece: ts.Piece, Close: ts.Close}},
  98                 pieceStateChanges: pubsub.NewPubSub(),
  99         }
 100         require.NoError(b, t.setInfo(&metainfo.Info{
 101                 Pieces:      make([]byte, 20),
 102                 Length:      1 << 20,
 103                 PieceLength: 1 << 20,
 104         }))
 105         t.setChunkSize(defaultChunkSize)
 106         t._pendingPieces.Set(0, PiecePriorityNormal.BitmapPriority())
 107         r, w := net.Pipe()
 108         cn := cl.newConnection(r, true, r.RemoteAddr(), r.RemoteAddr().Network(), regularNetConnPeerConnConnString(r))
 109         cn.setTorrent(t)
 110         mrlErr := make(chan error)
 111         msg := pp.Message{
 112                 Type:  pp.Piece,
 113                 Piece: make([]byte, defaultChunkSize),
 114         }
 115         go func() {
 116                 cl.lock()
 117                 err := cn.mainReadLoop()
 118                 if err != nil {
 119                         mrlErr <- err
 120                 }
 121                 close(mrlErr)
 122         }()
 123         wb := msg.MustMarshalBinary()
 124         b.SetBytes(int64(len(msg.Piece)))
 125         go func() {
 126                 ts.writeSem.Lock()
 127                 for i := 0; i < b.N; i += 1 {
 128                         cl.lock()
 129                         // The chunk must be written to storage everytime, to ensure the
 130                         // writeSem is unlocked.
 131                         t.pendAllChunkSpecs(0)
 132                         cn.validReceiveChunks = map[RequestIndex]int{
 133                                 t.requestIndexFromRequest(newRequestFromMessage(&msg)): 1,
 134                         }
 135                         cl.unlock()
 136                         n, err := w.Write(wb)
 137                         require.NoError(b, err)
 138                         require.EqualValues(b, len(wb), n)
 139                         ts.writeSem.Lock()
 140                 }
 141                 if err := w.Close(); err != nil {
 142                         panic(err)
 143                 }
 144         }()
 145         c.Assert([]error{nil, io.EOF}, quicktest.Contains, <-mrlErr)
 146         c.Assert(cn._stats.ChunksReadUseful.Int64(), quicktest.Equals, int64(b.N))
 147 }
 148
 149 func TestConnPexPeerFlags(t *testing.T) {
 150         var (
 151                 tcpAddr = &net.TCPAddr{IP: net.IPv6loopback, Port: 4848}
 152                 udpAddr = &net.UDPAddr{IP: net.IPv6loopback, Port: 4848}
 153         )
 154         var testcases = []struct {
 155                 conn *PeerConn
 156                 f    pp.PexPeerFlags
 157         }{
 158                 {&PeerConn{Peer: Peer{outgoing: false, PeerPrefersEncryption: false}}, 0},
 159                 {&PeerConn{Peer: Peer{outgoing: false, PeerPrefersEncryption: true}}, pp.PexPrefersEncryption},
 160                 {&PeerConn{Peer: Peer{outgoing: true, PeerPrefersEncryption: false}}, pp.PexOutgoingConn},
 161                 {&PeerConn{Peer: Peer{outgoing: true, PeerPrefersEncryption: true}}, pp.PexOutgoingConn | pp.PexPrefersEncryption},
 162                 {&PeerConn{Peer: Peer{RemoteAddr: udpAddr, Network: udpAddr.Network()}}, pp.PexSupportsUtp},
 163                 {&PeerConn{Peer: Peer{RemoteAddr: udpAddr, Network: udpAddr.Network(), outgoing: true}}, pp.PexOutgoingConn | pp.PexSupportsUtp},
 164                 {&PeerConn{Peer: Peer{RemoteAddr: tcpAddr, Network: tcpAddr.Network(), outgoing: true}}, pp.PexOutgoingConn},
 165                 {&PeerConn{Peer: Peer{RemoteAddr: tcpAddr, Network: tcpAddr.Network()}}, 0},
 166         }
 167         for i, tc := range testcases {
 168                 f := tc.conn.pexPeerFlags()
 169                 require.EqualValues(t, tc.f, f, i)
 170         }
 171 }
 172
 173 func TestConnPexEvent(t *testing.T) {
 174         var (
 175                 udpAddr     = &net.UDPAddr{IP: net.IPv6loopback, Port: 4848}
 176                 tcpAddr     = &net.TCPAddr{IP: net.IPv6loopback, Port: 4848}
 177                 dialTcpAddr = &net.TCPAddr{IP: net.IPv6loopback, Port: 4747}
 178                 dialUdpAddr = &net.UDPAddr{IP: net.IPv6loopback, Port: 4747}
 179         )
 180         var testcases = []struct {
 181                 t pexEventType
 182                 c *PeerConn
 183                 e pexEvent
 184         }{
 185                 {
 186                         pexAdd,
 187                         &PeerConn{Peer: Peer{RemoteAddr: udpAddr, Network: udpAddr.Network()}},
 188                         pexEvent{pexAdd, udpAddr, pp.PexSupportsUtp},
 189                 },
 190                 {
 191                         pexDrop,
 192                         &PeerConn{Peer: Peer{RemoteAddr: tcpAddr, Network: tcpAddr.Network(), outgoing: true, PeerListenPort: dialTcpAddr.Port}},
 193                         pexEvent{pexDrop, tcpAddr, pp.PexOutgoingConn},
 194                 },
 195                 {
 196                         pexAdd,
 197                         &PeerConn{Peer: Peer{RemoteAddr: tcpAddr, Network: tcpAddr.Network(), PeerListenPort: dialTcpAddr.Port}},
 198                         pexEvent{pexAdd, dialTcpAddr, 0},
 199                 },
 200                 {
 201                         pexDrop,
 202                         &PeerConn{Peer: Peer{RemoteAddr: udpAddr, Network: udpAddr.Network(), PeerListenPort: dialUdpAddr.Port}},
 203                         pexEvent{pexDrop, dialUdpAddr, pp.PexSupportsUtp},
 204                 },
 205         }
 206         for i, tc := range testcases {
 207                 e := tc.c.pexEvent(tc.t)
 208                 require.EqualValues(t, tc.e, e, i)
 209         }
 210 }