private void OnRecvAnnouncePeerQuery(IPEndPoint ipinfo, BDictionary data)
{
var t = data.Get <BString>("t");
var args = data.Get <BDictionary>("a");
var id = args.Get <BString>("id");
var infoHash = args.Get <BString>("info_hash");
var impliedPort = args.Get <BNumber>("implied_port");
int port = (impliedPort != null && impliedPort.Value == 1) ? ipinfo.Port : (int)args.Get <BNumber>("port").Value;
fLogger.WriteDebug("Receive `announce_peer` query from {0} [{1}] for {2}", ipinfo.ToString(), id.Value.ToHexString(), infoHash.Value.ToHexString());
fRoutingTable.UpdateNode(new DHTNode(id.Value, ipinfo));
if (!DHTHelper.ArraysEqual(infoHash.Value, fSearchInfoHash))
{
// skip response for another infohash query
return;
}
// receive `announce_peer` query for our infohash
var nodesList = fRoutingTable.FindNodes(infoHash.Value);
Send(ipinfo, DHTMessage.CreateAnnouncePeerResponse(t, fLocalID, nodesList));
}
private void OnRecvGetPeersQuery(IPEndPoint ipinfo, BDictionary data)
{
var t = data.Get <BString>("t");
var args = data.Get <BDictionary>("a");
var id = args.Get <BString>("id");
var infoHash = args.Get <BString>("info_hash");
fLogger.WriteDebug("Receive `get_peers` query from {0} [{1}] for {2}", ipinfo.ToString(), id.Value.ToHexString(), infoHash.Value.ToHexString());
fRoutingTable.UpdateNode(new DHTNode(id.Value, ipinfo));
var neighbor = DHTHelper.GetNeighbor(infoHash.Value, fLocalID);
var peersList = (DHTHelper.ArraysEqual(infoHash.Value, fSearchInfoHash)) ? fPeersHolder.GetPeersList() : null;
var nodesList = fRoutingTable.FindNodes(infoHash.Value);
Send(ipinfo, DHTMessage.CreateGetPeersResponse(t, neighbor, infoHash.Value, peersList, nodesList));
}
/*public void UpdateNodes(IEnumerable<DHTNode> nodes)
* {
* foreach (var node in nodes) {
* UpdateNode(node);
* }
* }*/
public void UpdateNode(DHTNode node)
{
if (node == null || node.ID == null)
{
return;
}
if (fKTable.Count >= fMaxNodeSize && fMinLastTime + fRouteLife.Ticks < DateTime.Now.Ticks)
{
lock (this) {
if (fMinLastTime + fRouteLife.Ticks < DateTime.Now.Ticks)
{
ClearExpireNode();
}
}
}
if (fKTable.Count >= fMaxNodeSize)
{
return;
}
DHTNode existNode = null;
if (fKTable.TryGetValue(node.RouteId, out existNode))
{
if (DHTHelper.ArraysEqual(node.ID, existNode.ID))
{
node = existNode;
}
else
{
// replace to new
fKTable[node.RouteId] = node;
}
}
else
{
fKTable.Add(node.RouteId, node);
}
node.LastUpdateTime = DateTime.Now.Ticks;
}
