예제 #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()
	}
}
예제 #2
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)
	}

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

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

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

		lock.Lock()
		answered++
		lock.Unlock()
	}
}