/// <summary>Attempt to find the overlap in a remote TunnelTransportAddress
/// and our local node. This will be used to help communicate with a new
/// tunneled peer.</summary>
public virtual List<Connection> FindOverlap(TunnelTransportAddress ta, ConnectionList cons)
{
List<Connection> overlap = new List<Connection>();
foreach(Connection con in cons) {
if(ta.ContainsForwarder(con.Address)) {
overlap.Add(con);
}
}
return GetOldest(overlap);
}
public void Test()
{
AHAddress addr = new AHAddress(new System.Security.Cryptography.RNGCryptoServiceProvider());
TransportAddress ta = TransportAddressFactory.CreateInstance("brunet.tcp://169.0.5.1:5000");
FakeEdge fe = new FakeEdge(ta, ta);
Connection fcon = new Connection(fe, addr, "structured", null, null);
List<Connection> overlap = new List<Connection>();
overlap.Add(fcon);
TunnelTransportAddress tta = new TunnelTransportAddress(addr, overlap);
TunnelEdge te1 = new TunnelEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
Connection t1con = new Connection(te1, addr, "structured", null, null);
overlap = new List<Connection>();
overlap.Add(t1con);
TunnelEdge te2 = new TunnelEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
Connection t2con = new Connection(te2, addr, "structured", null, null);
overlap = new List<Connection>();
overlap.Add(t2con);
TunnelEdge te3 = new TunnelEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
Connection t3con = new Connection(te3, addr, "structured", null, null);
overlap = new List<Connection>();
overlap.Add(t3con);
TunnelEdge te4 = new TunnelEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
Connection t4con = new Connection(te4, addr, "structured", null, null);
overlap = new List<Connection>();
overlap.Add(t4con);
TunnelEdge te5 = new TunnelEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
Connection t5con = new Connection(te5, addr, "structured", null, null);
Assert.AreEqual(te5.ShouldClose(), false, "Shouldn't close yet...");
te1.DisconnectionHandler(fcon);
Assert.AreEqual(te5.ShouldClose(), true, "Should close...");
overlap.Add(t5con);
overlap.Add(t3con);
overlap.Add(t1con);
te2.UpdateNeighborIntersection(overlap);
Assert.AreEqual(te5.ShouldClose(), true, "Should close... 2");
}
/// <summary>Outgoing edge, since we don't know the RemoteID yet!</summary>
public TunnelEdge(IEdgeSendHandler send_handler, TunnelTransportAddress local_ta,
TunnelTransportAddress remote_ta, IForwarderSelector ias, List<Connection> overlap) :
this(send_handler, local_ta, remote_ta, ias, overlap, -1)
{
}
/// <summary>Constructor for a TunnelEdge, RemoteID == -1 for out bound.</summary>
public TunnelEdge(IEdgeSendHandler send_handler, TunnelTransportAddress local_ta,
TunnelTransportAddress remote_ta, IForwarderSelector ias, List<Connection> overlap,
int remote_id) : base(send_handler, remote_id != -1)
{
_remote_id = remote_id;
lock(_rand) {
LocalID = _rand.Next();
}
byte[] bid = new byte[8];
NumberSerializer.WriteInt(LocalID, bid, 0);
NumberSerializer.WriteInt(_remote_id, bid, 4);
_mid = MemBlock.Reference(bid);
_local_ta = local_ta;
_remote_ta = remote_ta;
_tunnels = new List<Connection>(overlap);
_ias = ias;
_ias.Update(_tunnels);
AHHeader ahh = new AHHeader(1, 20, local_ta.Target, remote_ta.Target,
AHHeader.Options.Exact);
ICopyable header = new CopyList(PType.Protocol.AH, ahh,
PType.Protocol.Tunneling);
Header = MemBlock.Copy(header);
}