public void testOutOfOrderDelivery() throws BlockedTooLongException {
NewPacketFormat sender = new NewPacketFormat(null, 0, 0, NEW_FORMAT);
PeerMessageQueue senderQueue = new PeerMessageQueue();
NewPacketFormat receiver = new NewPacketFormat(null, 0, 0, NEW_FORMAT);
SessionKey senderKey =
new SessionKey(
null,
null,
null,
null,
null,
null,
null,
null,
null,
new NewPacketFormatKeyContext(0, 0));
SessionKey receiverKey =
new SessionKey(
null,
null,
null,
null,
null,
null,
null,
null,
null,
new NewPacketFormatKeyContext(0, 0));
senderQueue.queueAndEstimateSize(new MessageItem(new byte[1024], null, false, null, (short) 0));
NPFPacket fragment1 = sender.createPacket(512, senderQueue, senderKey, false);
assertEquals(1, fragment1.getFragments().size());
NPFPacket fragment2 = sender.createPacket(512, senderQueue, senderKey, false);
assertEquals(1, fragment2.getFragments().size());
NPFPacket fragment3 = sender.createPacket(512, senderQueue, senderKey, false);
assertEquals(1, fragment3.getFragments().size());
receiver.handleDecryptedPacket(fragment1, receiverKey);
receiver.handleDecryptedPacket(fragment3, receiverKey);
assertEquals(1, receiver.handleDecryptedPacket(fragment2, receiverKey).size());
}
public void testLostLastAck() throws BlockedTooLongException, InterruptedException {
NullBasePeerNode senderNode = new NullBasePeerNode();
NewPacketFormat sender = new NewPacketFormat(senderNode, 0, 0, NEW_FORMAT);
PeerMessageQueue senderQueue = new PeerMessageQueue();
NewPacketFormat receiver = new NewPacketFormat(null, 0, 0, NEW_FORMAT);
PeerMessageQueue receiverQueue = new PeerMessageQueue();
SessionKey senderKey =
new SessionKey(
null,
null,
null,
null,
null,
null,
null,
null,
null,
new NewPacketFormatKeyContext(0, 0));
senderNode.currentKey = senderKey;
SessionKey receiverKey =
new SessionKey(
null,
null,
null,
null,
null,
null,
null,
null,
null,
new NewPacketFormatKeyContext(0, 0));
senderQueue.queueAndEstimateSize(new MessageItem(new byte[1024], null, false, null, (short) 0));
NPFPacket fragment1 = sender.createPacket(512, senderQueue, senderKey, false);
assertEquals(1, fragment1.getFragments().size());
receiver.handleDecryptedPacket(fragment1, receiverKey);
NPFPacket fragment2 = sender.createPacket(512, senderQueue, senderKey, false);
assertEquals(1, fragment2.getFragments().size());
receiver.handleDecryptedPacket(fragment2, receiverKey);
Thread.sleep(NewPacketFormatKeyContext.MAX_ACK_DELAY * 2);
NPFPacket ack1 = receiver.createPacket(512, receiverQueue, receiverKey, false);
assertEquals(2, ack1.getAcks().size());
assertEquals(0, (int) ack1.getAcks().first());
assertEquals(1, (int) ack1.getAcks().last());
sender.handleDecryptedPacket(ack1, senderKey);
NPFPacket fragment3 = sender.createPacket(512, senderQueue, senderKey, false);
assertEquals(1, fragment3.getFragments().size());
receiver.handleDecryptedPacket(fragment3, receiverKey);
Thread.sleep(NewPacketFormatKeyContext.MAX_ACK_DELAY * 2);
receiver.createPacket(512, senderQueue, receiverKey, false); // Sent, but lost
try {
Thread.sleep(1000); // RTT is 250ms by default since there is no PeerNode to track it
} catch (InterruptedException e) {
fail();
}
NPFPacket resend1 = sender.createPacket(512, senderQueue, senderKey, false);
if (resend1 == null) fail("No packet to resend");
assertEquals(0, receiver.handleDecryptedPacket(resend1, receiverKey).size());
// Make sure an ack is sent
Thread.sleep(NewPacketFormatKeyContext.MAX_ACK_DELAY * 2);
NPFPacket ack2 = receiver.createPacket(512, receiverQueue, receiverKey, false);
assertNotNull(ack2);
assertEquals(1, ack2.getAcks().size());
assertEquals(0, ack2.getFragments().size());
}