+// TestResponsive was the first test to fail if uTP is disabled and TCP sockets dial from the
+// listening port.
+func TestResponsiveTcpOnly(t *testing.T) {
+ seederDataDir, mi := testutil.GreetingTestTorrent()
+ defer os.RemoveAll(seederDataDir)
+ cfg := TestingConfig(t)
+ cfg.DisableUTP = true
+ cfg.Seed = true
+ cfg.DataDir = seederDataDir
+ seeder, err := NewClient(cfg)
+ require.Nil(t, err)
+ defer seeder.Close()
+ seederTorrent, _, _ := seeder.AddTorrentSpec(TorrentSpecFromMetaInfo(mi))
+ seederTorrent.VerifyData()
+ leecherDataDir := t.TempDir()
+ cfg = TestingConfig(t)
+ 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.AddClientPeer(seeder)
+ reader := leecherTorrent.NewReader()
+ defer reader.Close()
+ reader.SetReadahead(0)
+ reader.SetResponsive()
+ b := make([]byte, 2)
+ _, err = reader.Seek(3, io.SeekStart)
+ require.NoError(t, err)
+ _, err = io.ReadFull(reader, b)
+ assert.Nil(t, err)
+ assert.EqualValues(t, "lo", string(b))
+ _, err = reader.Seek(11, io.SeekStart)
+ require.NoError(t, err)
+ n, err := io.ReadFull(reader, b)
+ assert.Nil(t, err)
+ assert.EqualValues(t, 2, n)
+ assert.EqualValues(t, "d\n", string(b))
+}
+