func (d *Discoverer) Hint(node string, addrs []string) {
resAddrs := resolveAddrs(addrs)
var id protocol.NodeID
id.UnmarshalText([]byte(node))
d.registerNode(nil, Node{
Addresses: resAddrs,
ID: id[:],
})
}
func handleQueryV2(conn *net.UDPConn, addr *net.UDPAddr, buf []byte) {
var pkt discover.Query
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.Announce{
Magic: discover.AnnouncementMagic,
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()
}
}
func handleAnnounceV2(addr *net.UDPAddr, buf []byte) {
var pkt discover.Announce
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()
}