@Provides
@Named("openkad.net.udp.sock")
@Singleton
DatagramSocket provideKadDatagramSocket(
@Named("openkad.scheme.name") String kadScheme, @Named("openkad.local.node") Node localNode)
throws SocketException {
System.out.println("binding: " + localNode.getPort(kadScheme));
return new DatagramSocket(localNode.getPort(kadScheme));
}
@Provides
@Named("openkad.local.color")
@Singleton
int provideLocalColor(
@Named("openkad.local.node") Node localNode, @Named("openkad.color.nrcolors") int nrColors) {
return localNode.getKey().getColor(nrColors);
}
/**
* Uses the keyFactory to generate keys which will fit to different buckets
*
* @return a list of random keys where no 2 keys will fit into the same bucket
*/
public List<Key> randomKeysForAllBuckets() {
List<Key> $ = new ArrayList<Key>();
for (int i = 0; i < kbuckets.length; ++i) {
Key key = keyFactory.generate(i).xor(localNode.getKey());
$.add(key);
}
return $;
}
@Provides
@Named("openkad.local.node")
@Singleton
Node provideLocalNode(
@Named("openkad.scheme.name") String kadScheme,
@Named("openkad.net.udp.port") int udpPort,
@Named("openkad.local.key") String base64Key,
KeyFactory keyFactory)
throws UnknownHostException, IOException {
Integer a =
new Integer(udpPort + InetAddress.getByName("localhost").getHostAddress().hashCode());
String v = a.toString();
Key key = base64Key.isEmpty() ? keyFactory.create(v) : keyFactory.get(base64Key);
Node n = new Node(key);
n.setInetAddress(InetAddress.getByName("localhost"));
n.addEndpoint(kadScheme, udpPort);
return n;
}
public void markAsDead(Node n) {
int i = getKBucketIndex(n.getKey());
if (i == -1) return;
kbuckets[i].markDead(n);
}
private int getKBucketIndex(Key key) {
return key.xor(localNode.getKey()).getFirstSetBitIndex();
}