11 "bitbucket.org/anacrolix/go.torrent/dht"
14 type pingResponse struct {
20 tableFileName = flag.String("tableFile", "", "name of file for storing node info")
21 serveAddr = flag.String("serveAddr", ":0", "local UDP address")
26 func loadTable() error {
27 if *tableFileName == "" {
30 f, err := os.Open(*tableFileName)
31 if os.IsNotExist(err) {
35 return fmt.Errorf("error opening table file: %s", err)
40 b := make([]byte, dht.CompactNodeInfoLen)
41 _, err := io.ReadFull(f, b)
46 return fmt.Errorf("error reading table file: %s", err)
49 err = ni.UnmarshalCompact(b)
51 return fmt.Errorf("error unmarshaling compact node info: %s", err)
56 log.Printf("loaded %d nodes from table file", added)
61 log.SetFlags(log.LstdFlags | log.Lshortfile)
64 s, err = dht.NewServer(&dht.ServerConfig{
72 log.Fatalf("error loading table: %s", err)
74 log.Printf("dht server on %s, ID is %q", s.LocalAddr(), s.IDString())
78 func saveTable() error {
79 goodNodes := s.Nodes()
80 if *tableFileName == "" {
81 if len(goodNodes) != 0 {
82 log.Printf("discarding %d good nodes!", len(goodNodes))
86 f, err := os.OpenFile(*tableFileName, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
88 return fmt.Errorf("error opening table file: %s", err)
91 for _, nodeInfo := range goodNodes {
92 var b [dht.CompactNodeInfoLen]byte
93 err := nodeInfo.PutCompact(b[:])
95 return fmt.Errorf("error compacting node info: %s", err)
97 _, err = f.Write(b[:])
99 return fmt.Errorf("error writing compact node info: %s", err)
102 log.Printf("saved %d nodes to table file", len(goodNodes))
106 func setupSignals() {
107 ch := make(chan os.Signal)
117 // if err := saveTable(); err != nil {
118 // log.Printf("error saving node table: %s", err)