Examples with FindClosePeersPacket i2p.bote.packet.dht.FindClosePeersPacket used on opensource projects

Example 1 with FindClosePeersPacket

use of i2p.bote.packet.dht.FindClosePeersPacket in project i2p.i2p-bote by i2p.

the class FindClosePeersPacketTest method toByteArrayAndBack.

@Test
public void toByteArrayAndBack() throws Exception {
    byte[] arrayA = findCloseNodesPacket.toByteArray();
    byte[] arrayB = new FindClosePeersPacket(arrayA).toByteArray();
    assertArrayEquals("The two arrays differ!", arrayA, arrayB);
}

Example 2 with FindClosePeersPacket

use of i2p.bote.packet.dht.FindClosePeersPacket in project i2p.i2p-bote by i2p.

the class ClosestNodesLookupTask method call.

public List<Destination> call() throws InterruptedException {
    log.debug("Looking up nodes closest to " + key);
    PacketListener packetListener = new IncomingPacketHandler();
    i2pReceiver.addPacketListener(packetListener);
    try {
        // get a list of all unlocked peers (we don't how many we really need because some may not respond)
        notQueriedYet.addAll(bucketManager.getAllUnlockedPeers());
        logStatus();
        startTime = getTime();
        do {
            // send new requests if less than alpha are pending
            while (pendingRequests.size() < KademliaConstants.ALPHA && !notQueriedYet.isEmpty()) {
                // query the closest unqueried peer
                Destination peer = notQueriedYet.first();
                notQueriedYet.remove(peer);
                // if the peer is us, do a local lookup; otherwise, send a request to the peer
                if (localDestination.equals(peer))
                    addLocalResults(key);
                else {
                    FindClosePeersPacket packet = new FindClosePeersPacket(key);
                    pendingRequests.put(peer, packet);
                    sendQueue.send(packet, peer);
                }
                logStatus();
            }
            // handle timeouts
            for (Map.Entry<Destination, FindClosePeersPacket> request : pendingRequests.entrySet()) if (hasTimedOut(request.getValue(), REQUEST_TIMEOUT)) {
                Destination peer = request.getKey();
                log.debug("FindCloseNodes request to peer " + Util.toShortenedBase32(peer) + " timed out.");
                bucketManager.noResponse(peer);
                pendingRequests.remove(peer);
            }
            TimeUnit.SECONDS.sleep(1);
        } while (!isDone());
        log.debug("Node lookup for " + key + " found " + responses.size() + " nodes (may include local node).");
        synchronized (responses) {
            Iterator<Destination> i = responses.iterator();
            while (i.hasNext()) log.debug("  Node: " + Util.toBase32(i.next()));
        }
    } finally {
        i2pReceiver.removePacketListener(packetListener);
    }
    return getResults();
}

Example 3 with FindClosePeersPacket

use of i2p.bote.packet.dht.FindClosePeersPacket in project i2p.i2p-bote by i2p.

the class KademliaDHT method packetReceived.

// PacketListener implementation
@Override
public void packetReceived(CommunicationPacket packet, Destination sender, long receiveTime) {
    if (packet instanceof FindClosePeersPacket)
        sendPeerList((FindClosePeersPacket) packet, sender);
    else if (packet instanceof StoreRequest) {
        DhtStorablePacket packetToStore = ((StoreRequest) packet).getPacketToStore();
        storeLocally(packetToStore, sender);
    } else if (packet instanceof RetrieveRequest) {
        RetrieveRequest retrieveRequest = (RetrieveRequest) packet;
        DhtStorageHandler storageHandler = storageHandlers.get(retrieveRequest.getDataType());
        if (storageHandler != null) {
            DhtStorablePacket storedPacket = storageHandler.retrieve(retrieveRequest.getKey());
            // if requested packet found, send it to the requester
            Collection<ResponsePacket> response = ResponsePacket.create(storedPacket, StatusCode.OK, retrieveRequest.getPacketId());
            if (storedPacket != null)
                log.debug("Packet found for retrieve request: [" + retrieveRequest + "], replying to sender: [" + Util.toBase32(sender) + "]");
            else
                log.debug("No matching packet found for retrieve request: [" + retrieveRequest + "]");
            sendQueue.send(response, sender);
        } else
            log.warn("No storage handler found for type " + packet.getClass().getSimpleName() + ".");
    } else if (packet instanceof DeleteRequest) {
        DeleteRequest delRequest = (DeleteRequest) packet;
        DhtStorageHandler storageHandler = storageHandlers.get(delRequest.getDataType());
        if (storageHandler instanceof DeletionAwareDhtFolder<?>)
            ((DeletionAwareDhtFolder<?>) storageHandler).process(delRequest);
    } else if (packet instanceof DeletionQuery) {
        DhtStorageHandler storageHandler = storageHandlers.get(EncryptedEmailPacket.class);
        if (storageHandler instanceof DeletionAwareDhtFolder) {
            Hash dhtKey = ((DeletionQuery) packet).getDhtKey();
            UniqueId delAuthorization = ((DeletionAwareDhtFolder<?>) storageHandler).getDeleteAuthorization(dhtKey);
            // If we know the Delete Authorization for the DHT key, send it to the peer
            if (delAuthorization != null) {
                DeletionInfoPacket delInfo = new DeletionInfoPacket();
                delInfo.put(dhtKey, delAuthorization);
                Collection<ResponsePacket> response = ResponsePacket.create(delInfo, StatusCode.OK, packet.getPacketId());
                sendQueue.send(response, sender);
            }
        }
    }
    // bucketManager is not registered as a PacketListener, so notify it here
    bucketManager.packetReceived(packet, sender, receiveTime);
}

Example 4 with FindClosePeersPacket

use of i2p.bote.packet.dht.FindClosePeersPacket in project i2p.i2p-bote by i2p.

the class FindClosePeersPacketTest method setUp.

@Before
public void setUp() throws Exception {
    Hash key = new Hash(new byte[] { -48, 78, 66, 58, -79, 87, 38, -103, -60, -27, 108, 55, 117, 37, -99, 93, -23, -102, -83, 20, 44, -80, 65, 89, -68, -73, 69, 51, 115, 79, 24, 127 });
    findCloseNodesPacket = new FindClosePeersPacket(key);
}