Esempio n. 1
0
func handleQueryV2(conn *net.UDPConn, addr *net.UDPAddr, buf []byte) {
	var pkt discover.QueryV2
	err := pkt.UnmarshalXDR(buf)
	if err != nil {
		log.Println("QueryV2 Unmarshal:", err)
		log.Println(hex.Dump(buf))
		return
	}
	if debug {
		log.Printf("<- %v %#v", addr, pkt)
	}

	var id protocol.NodeID
	if len(pkt.NodeID) == 32 {
		// Raw node ID
		copy(id[:], pkt.NodeID)
	} else {
		id.UnmarshalText(pkt.NodeID)
	}

	lock.Lock()
	node, ok := nodes[id]
	queries++
	lock.Unlock()

	if ok && len(node.addresses) > 0 {
		ann := discover.AnnounceV2{
			Magic: discover.AnnouncementMagicV2,
			This: discover.Node{
				ID: pkt.NodeID,
			},
		}
		for _, addr := range node.addresses {
			ann.This.Addresses = append(ann.This.Addresses, discover.Address{IP: addr.ip, Port: addr.port})
		}
		if debug {
			log.Printf("-> %v %#v", addr, pkt)
		}

		tb := ann.MarshalXDR()
		_, _, err = conn.WriteMsgUDP(tb, nil, addr)
		if err != nil {
			log.Println("QueryV2 response write:", err)
		}

		lock.Lock()
		answered++
		lock.Unlock()
	}
}
Esempio n. 2
0
func handleAnnounceV2(addr *net.UDPAddr, buf []byte) {
	var pkt discover.AnnounceV2
	err := pkt.UnmarshalXDR(buf)
	if err != nil && err != io.EOF {
		log.Println("AnnounceV2 Unmarshal:", err)
		log.Println(hex.Dump(buf))
		return
	}
	if debug {
		log.Printf("<- %v %#v", addr, pkt)
	}

	lock.Lock()
	announces++
	lock.Unlock()

	ip := addr.IP.To4()
	if ip == nil {
		ip = addr.IP.To16()
	}

	var addrs []address
	for _, addr := range pkt.This.Addresses {
		tip := addr.IP
		if len(tip) == 0 {
			tip = ip
		}
		addrs = append(addrs, address{
			ip:   tip,
			port: addr.Port,
		})
	}

	node := node{
		addresses: addrs,
		updated:   time.Now(),
	}

	var id protocol.NodeID
	if len(pkt.This.ID) == 32 {
		// Raw node ID
		copy(id[:], pkt.This.ID)
	} else {
		id.UnmarshalText(pkt.This.ID)
	}

	lock.Lock()
	nodes[id] = node
	lock.Unlock()
}
Esempio n. 3
0
func handleAnnounceV2(addr *net.UDPAddr, buf []byte) {
	var pkt discover.AnnounceV2
	err := pkt.UnmarshalXDR(buf)
	if err != nil {
		log.Println("AnnounceV2 Unmarshal:", err)
		log.Println(hex.Dump(buf))
		return
	}
	if debug {
		log.Printf("<- %v %#v", addr, pkt)
	}

	lock.Lock()
	announces++
	lock.Unlock()

	ip := addr.IP.To4()
	if ip == nil {
		ip = addr.IP.To16()
	}

	var addrs []Address
	for _, addr := range pkt.Addresses {
		tip := addr.IP
		if len(tip) == 0 {
			tip = ip
		}
		addrs = append(addrs, Address{
			IP:   tip,
			Port: addr.Port,
		})
	}

	node := Node{
		Addresses: addrs,
		Updated:   time.Now(),
	}

	lock.Lock()
	nodes[pkt.NodeID] = node
	lock.Unlock()
}