func NewRouter(key *utils.PrivateKey, logger *log.Logger, config utils.Config) (*Router, error) {
exit := make(chan int)
listener, err := getOpenPortConn(config)
if err != nil {
return nil, err
}
logger.Info("Node ID: %s", key.Digest().String())
logger.Info("Node Socket: %v", listener.Addr())
ns := utils.GlobalNamespace
id := utils.NewNodeID(ns, key.Digest())
r := Router{
id: id,
listener: listener,
key: key,
sessions: make(map[utils.NodeID]*session),
mainDht: dht.NewDHT(10, id, id, listener.RawConn, logger),
groupDht: make(map[utils.NodeID]*dht.DHT),
receivedPackets: make(map[[20]byte]int),
logger: logger,
recv: make(chan Message, 100),
send: make(chan internal.Packet, 100),
exit: exit,
}
go r.run()
return &r, nil
}
func (p *Router) Join(group utils.NodeID) error {
if p.getGroupDht(group) == nil {
d := dht.NewDHT(10, p.ID(), group, p.listener.RawConn, p.logger)
for _, n := range p.mainDht.LoadNodes(group.String()) {
if !n.ID.Match(p.id) {
d.Discover(n.Addr)
}
}
p.dhtMutex.Lock()
p.groupDht[group] = d
p.dhtMutex.Unlock()
p.mainDht.StoreNodes(group.String(), []utils.NodeInfo{
utils.NodeInfo{ID: p.id, Addr: p.listener.Addr()},
})
return nil
}
return errors.New("already joined")
}