public override void HandleResponse(Message.Message requestMessage, PeerConnection peerConnection, bool sign, IResponder responder)
{
if (requestMessage.KeyList.Count < 2)
{
throw new ArgumentException("At least location and domain keys are needed.");
}
if (!(requestMessage.Type == Message.Message.MessageType.Request1 ||
requestMessage.Type == Message.Message.MessageType.Request2 ||
requestMessage.Type == Message.Message.MessageType.Request3 ||
requestMessage.Type == Message.Message.MessageType.Request4) &&
(requestMessage.Command == Rpc.Commands.Neighbor.GetNr()))
{
throw new ArgumentException("Message content is wrong for this handler.");
}
Number160 locationKey = requestMessage.Key(0);
Number160 domainKey = requestMessage.Key(1);
var neighbors = GetNeighbors(locationKey, NeighborSize);
if (neighbors == null)
{
// return empty neighbor set
var response = CreateResponseMessage(requestMessage, Message.Message.MessageType.NotFound);
response.SetNeighborSet(new NeighborSet(-1, new Collection <PeerAddress>()));
responder.Response(response);
return;
}
// create response message and set neighbors
var responseMessage = CreateResponseMessage(requestMessage, Message.Message.MessageType.Ok);
Logger.Debug("Found the following neighbors: {0}.", Convenient.ToString(neighbors));
var neighborSet = new NeighborSet(NeighborLimit, neighbors);
responseMessage.SetNeighborSet(neighborSet);
Number160 contentKey = requestMessage.Key(2);
var keyBloomFilter = requestMessage.BloomFilter(0);
var contentBloomFilter = requestMessage.BloomFilter(1);
var keyCollection = requestMessage.KeyCollection(0);
// it is important to set an integer if a value is present
bool isDigest = requestMessage.Type != Message.Message.MessageType.Request1;
if (isDigest)
{
if (requestMessage.Type == Message.Message.MessageType.Request2)
{
DigestInfo digestInfo;
if (PeerBean.DigestStorage == null)
{
// no storage to search
digestInfo = new DigestInfo();
}
else if (contentKey != null && locationKey != null && domainKey != null)
{
var locationAndDomainKey = new Number320(locationKey, domainKey);
var from = new Number640(locationAndDomainKey, contentKey, Number160.Zero);
var to = new Number640(locationAndDomainKey, contentKey, Number160.MaxValue);
digestInfo = PeerBean.DigestStorage.Digest(from, to, -1, true);
}
else if ((keyBloomFilter != null || contentBloomFilter != null) && locationKey != null && domainKey != null)
{
var locationAndDomainKey = new Number320(locationKey, domainKey);
digestInfo = PeerBean.DigestStorage.Digest(locationAndDomainKey, keyBloomFilter,
contentBloomFilter, -1, true, true);
}
else if (keyCollection != null && keyCollection.Keys.Count == 2)
{
var enumerator = keyCollection.Keys.GetEnumerator();
var from = enumerator.MoveNext() ? enumerator.Current : null; // TODO works correctly?
var to = enumerator.MoveNext() ? enumerator.Current : null;
digestInfo = PeerBean.DigestStorage.Digest(from, to, -1, true);
}
else if (locationKey != null && domainKey != null)
{
var locationAndDomainKey = new Number320(locationKey, domainKey);
var from = new Number640(locationAndDomainKey, Number160.Zero, Number160.Zero);
var to = new Number640(locationAndDomainKey, Number160.MaxValue, Number160.MaxValue);
digestInfo = PeerBean.DigestStorage.Digest(from, to, -1, true);
}
else
{
Logger.Warn("Did not search for anything.");
digestInfo = new DigestInfo();
}
responseMessage.SetIntValue(digestInfo.Size);
responseMessage.SetKey(digestInfo.KeyDigest);
responseMessage.SetKey(digestInfo.ContentDigest);
}
else if (requestMessage.Type == Message.Message.MessageType.Request3)
{
DigestInfo digestInfo;
if (PeerBean.DigestTracker == null)
{
// no tracker to search
digestInfo = new DigestInfo();
}
else
{
digestInfo = PeerBean.DigestTracker.Digest(locationKey, domainKey, contentKey);
if (digestInfo.Size == 0)
{
Logger.Debug("No entry found on peer {0}.", requestMessage.Recipient);
}
}
responseMessage.SetIntValue(digestInfo.Size);
}
else if (requestMessage.Type == Message.Message.MessageType.Request4)
{
lock (PeerBean.PeerStatusListeners)
{
foreach (var listener in PeerBean.PeerStatusListeners)
{
listener.PeerFailed(requestMessage.Sender,
new PeerException(PeerException.AbortCauseEnum.Shutdown, "shutdown"));
}
}
}
}
responder.Response(responseMessage);
}