11 "github.com/anacrolix/torrent/dht"
15 tableFileName = flag.String("tableFile", "", "name of file for storing node info")
16 serveAddr = flag.String("serveAddr", ":0", "local UDP address")
21 func loadTable() error {
22 if *tableFileName == "" {
25 f, err := os.Open(*tableFileName)
26 if os.IsNotExist(err) {
30 return fmt.Errorf("error opening table file: %s", err)
35 b := make([]byte, dht.CompactIPv4NodeInfoLen)
36 _, err := io.ReadFull(f, b)
41 return fmt.Errorf("error reading table file: %s", err)
44 err = ni.UnmarshalCompactIPv4(b)
46 return fmt.Errorf("error unmarshaling compact node info: %s", err)
51 log.Printf("loaded %d nodes from table file", added)
56 log.SetFlags(log.LstdFlags | log.Lshortfile)
59 s, err = dht.NewServer(&dht.ServerConfig{
67 log.Fatalf("error loading table: %s", err)
69 log.Printf("dht server on %s, ID is %q", s.Addr(), s.ID())
73 func saveTable() error {
74 goodNodes := s.Nodes()
75 if *tableFileName == "" {
76 if len(goodNodes) != 0 {
77 log.Printf("discarding %d good nodes!", len(goodNodes))
81 f, err := os.OpenFile(*tableFileName, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
83 return fmt.Errorf("error opening table file: %s", err)
86 for _, nodeInfo := range goodNodes {
87 var b [dht.CompactIPv4NodeInfoLen]byte
88 err := nodeInfo.PutCompact(b[:])
90 return fmt.Errorf("error compacting node info: %s", err)
92 _, err = f.Write(b[:])
94 return fmt.Errorf("error writing compact node info: %s", err)
97 log.Printf("saved %d nodes to table file", len(goodNodes))
101 func setupSignals() {
102 ch := make(chan os.Signal)
112 // if err := saveTable(); err != nil {
113 // log.Printf("error saving node table: %s", err)