144 lines
3.4 KiB
Go
144 lines
3.4 KiB
Go
package torrent
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import (
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"io"
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"net"
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"sync"
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"testing"
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"time"
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"github.com/anacrolix/missinggo/pubsub"
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"github.com/anacrolix/torrent/metainfo"
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pp "github.com/anacrolix/torrent/peer_protocol"
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"github.com/anacrolix/torrent/storage"
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"github.com/bradfitz/iter"
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"github.com/stretchr/testify/require"
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)
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// Ensure that no race exists between sending a bitfield, and a subsequent
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// Have that would potentially alter it.
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func TestSendBitfieldThenHave(t *testing.T) {
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r, w := io.Pipe()
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cl := Client{
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config: &ClientConfig{DownloadRateLimiter: unlimited},
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}
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cl.initLogger()
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c := cl.newConnection(nil, false, IpPort{}, "")
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c.setTorrent(cl.newTorrent(metainfo.Hash{}, nil))
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c.t.setInfo(&metainfo.Info{
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Pieces: make([]byte, metainfo.HashSize*3),
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})
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c.r = r
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c.w = w
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go c.writer(time.Minute)
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c.mu().Lock()
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c.t.completedPieces.Add(1)
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c.PostBitfield( /*[]bool{false, true, false}*/ )
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c.mu().Unlock()
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c.mu().Lock()
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c.Have(2)
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c.mu().Unlock()
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b := make([]byte, 15)
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n, err := io.ReadFull(r, b)
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c.mu().Lock()
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// This will cause connection.writer to terminate.
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c.closed.Set()
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c.mu().Unlock()
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require.NoError(t, err)
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require.EqualValues(t, 15, n)
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// Here we see that the bitfield doesn't have piece 2 set, as that should
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// arrive in the following Have message.
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require.EqualValues(t, "\x00\x00\x00\x02\x05@\x00\x00\x00\x05\x04\x00\x00\x00\x02", string(b))
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}
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type torrentStorage struct {
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writeSem sync.Mutex
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}
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func (me *torrentStorage) Close() error { return nil }
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func (me *torrentStorage) Piece(mp metainfo.Piece) storage.PieceImpl {
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return me
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}
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func (me *torrentStorage) Completion() storage.Completion {
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return storage.Completion{}
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}
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func (me *torrentStorage) MarkComplete() error {
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return nil
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}
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func (me *torrentStorage) MarkNotComplete() error {
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return nil
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}
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func (me *torrentStorage) ReadAt([]byte, int64) (int, error) {
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panic("shouldn't be called")
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}
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func (me *torrentStorage) WriteAt(b []byte, _ int64) (int, error) {
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if len(b) != defaultChunkSize {
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panic(len(b))
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}
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me.writeSem.Unlock()
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return len(b), nil
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}
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func BenchmarkConnectionMainReadLoop(b *testing.B) {
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cl := &Client{
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config: &ClientConfig{
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DownloadRateLimiter: unlimited,
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},
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}
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ts := &torrentStorage{}
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t := &Torrent{
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cl: cl,
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storage: &storage.Torrent{ts},
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pieceStateChanges: pubsub.NewPubSub(),
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}
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require.NoError(b, t.setInfo(&metainfo.Info{
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Pieces: make([]byte, 20),
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Length: 1 << 20,
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PieceLength: 1 << 20,
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}))
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t.setChunkSize(defaultChunkSize)
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t.pendingPieces.Set(0, PiecePriorityNormal.BitmapPriority())
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r, w := net.Pipe()
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cn := cl.newConnection(r, true, IpPort{}, "")
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cn.setTorrent(t)
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mrlErr := make(chan error)
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msg := pp.Message{
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Type: pp.Piece,
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Piece: make([]byte, defaultChunkSize),
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}
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go func() {
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cl.lock()
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err := cn.mainReadLoop()
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if err != nil {
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mrlErr <- err
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}
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close(mrlErr)
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}()
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wb := msg.MustMarshalBinary()
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b.SetBytes(int64(len(msg.Piece)))
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go func() {
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defer w.Close()
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ts.writeSem.Lock()
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for range iter.N(b.N) {
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cl.lock()
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// The chunk must be written to storage everytime, to ensure the
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// writeSem is unlocked.
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t.pieces[0].dirtyChunks.Clear()
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cn.validReceiveChunks = map[request]struct{}{newRequestFromMessage(&msg): struct{}{}}
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cl.unlock()
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n, err := w.Write(wb)
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require.NoError(b, err)
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require.EqualValues(b, len(wb), n)
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ts.writeSem.Lock()
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}
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}()
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require.NoError(b, <-mrlErr)
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require.EqualValues(b, b.N, cn.stats.ChunksReadUseful.Int64())
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}
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