/// <summary>Make sure there are no entries in the Dht, who we should be
/// connected to, but aren't.</summary>
protected void CheckAndUpdateRemoteTAs(List<TransportAddress> tas)
{
AHAddress right = null, left = null;
BigInteger right_dist = null, left_dist = null;
AHAddress addr = _node.Address as AHAddress;
// Find the closest left and right nodes
foreach(TransportAddress ta in tas) {
AHAddress target = (ta as SubringTransportAddress).Target;
if(target.Equals(addr)) {
continue;
}
BigInteger ldist = addr.LeftDistanceTo(target);
BigInteger rdist = addr.RightDistanceTo(target);
if(left_dist == null || ldist < left_dist) {
left_dist = ldist;
left = target;
}
if(right_dist == null || rdist < right_dist) {
right_dist = rdist;
right = target;
}
}
ConnectionList cl = _node.ConnectionTable.GetConnections(ConnectionType.Structured);
int local_idx = ~cl.IndexOf(_node.Address);
if(left != null) {
int remote_idx = ~cl.IndexOf(left);
// If we're not connected to the left closest and its closer than any
// of our current peers, let's connect to it
if(remote_idx > 0 && Math.Abs(local_idx - remote_idx) < 2) {
List<TransportAddress> tmp_tas = new List<TransportAddress>(1);
tmp_tas.Add(new SubringTransportAddress(left, _shared_namespace));
Linker linker = new Linker(_node, null, tmp_tas, "leaf", addr.ToString());
linker.Start();
}
}
if(right != null && right != left) {
int remote_idx = ~cl.IndexOf(right);
// If we're not connected to the right closest and its closer than any
// of our current peers, let's connect to it
if(remote_idx > 0 && Math.Abs(local_idx - remote_idx) < 2) {
List<TransportAddress> tmp_tas = new List<TransportAddress>(1);
tas.Add(new SubringTransportAddress(right, _shared_namespace));
Linker linker = new Linker(_node, null, tmp_tas, "leaf", addr.ToString());
linker.Start();
}
}
UpdateRemoteTAs(tas);
}