public RelayEdgeListener(Node node, IRelayOverlap ito, IForwarderSelectorFactory iasf)
{
_ito = ito;
_iasf = iasf;
_oco = new OverlapConnectionOverlord(node);
_node = node;
_running = 0;
_started = 0;
_id_to_tunnel = new Dictionary <int, RelayEdge>();
_sync = new object();
TransportAddress ta = new RelayTransportAddress(node.Address, new List <Address>());
ArrayList local_tas = new ArrayList(1);
local_tas.Add(ta);
_local_tas = local_tas;
_node.DemuxHandler.GetTypeSource(PType.Protocol.Relaying).Subscribe(this, null);
_node.ConnectionTable.ConnectionEvent += ConnectionHandler;
_node.ConnectionTable.DisconnectionEvent += DisconnectionHandler;
ConnectionList cons = _node.ConnectionTable.GetConnections(ConnectionType.Structured);
Interlocked.Exchange(ref _connections, cons);
_node.Rpc.AddHandler("tunnel", this);
_oco_trim_timer = Brunet.Util.FuzzyTimer.Instance.DoEvery(OcoTrim, _oco_trim_timeout, 0);
}
/// <summary>We need to keep track of a current ConnectionList, so we
/// listen to incoming connections. We also use this opportunity to
/// rebuild our LocalTA.</summary>
protected void ConnectionHandler(object o, EventArgs ea)
{
ConnectionEventArgs cea = ea as ConnectionEventArgs;
if (cea.ConnectionType != ConnectionType.Structured)
{
return;
}
ConnectionList cons = cea.CList;
Interlocked.Exchange(ref _connections, cons);
IList addresses = GetNearest(_node.Address, cons);
TransportAddress ta = new RelayTransportAddress(_node.Address, addresses);
ArrayList tas = new ArrayList(1);
tas.Add(ta);
Interlocked.Exchange(ref _local_tas, tas);
foreach (RelayEdge te in _tunnels)
{
IDictionary sync_message = _ito.GetSyncMessage(te.Overlap, _node.Address, cons);
Channel chan = new Channel(1);
_node.Rpc.Invoke(te, chan, "tunnel.Sync", sync_message);
}
}
/// <summary>Constructor for a RelayEdge, RemoteID == -1 for out bound.</summary>
public RelayEdge(IEdgeSendHandler send_handler, RelayTransportAddress local_ta,
RelayTransportAddress 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.Relaying);
Header = MemBlock.Copy(header);
}
public override bool Equals(object o)
{
if (o == this)
{
return(true);
}
RelayTransportAddress other = o as RelayTransportAddress;
if (other == null)
{
return(false);
}
bool same = _target.Equals(other._target);
same &= (_forwarders.Count == other._forwarders.Count);
if (!same)
{
return(false);
}
for (int i = 0; i < _forwarders.Count; i++)
{
same = _forwarders[i].Equals(other._forwarders[i]);
if (!same)
{
return(false);
}
}
return(true);
}
public void Test()
{
string ta_string = "brunet.tunnel://UBU72YLHU5C3SY7JMYMJRTKK4D5BGW22/FE4QWASN+FE4QWASM";
TransportAddress ta = TransportAddressFactory.CreateInstance("brunet.tunnel://UBU72YLHU5C3SY7JMYMJRTKK4D5BGW22/FE4QWASN+FE4QWASM");
Assert.AreEqual(ta.ToString(), ta_string, "testing tunnel TA parsing");
//Console.WriteLine(ta);
RelayTransportAddress tun_ta = (RelayTransportAddress)TransportAddressFactory.CreateInstance("brunet.tunnel://OIHZCNNUAXTLLARQIOBNCUWXYNAS62LO/CADSL6GV+CADSL6GU");
ArrayList fwd = new ArrayList();
fwd.Add(new AHAddress(Base32.Decode("CADSL6GVVBM6V442CETP4JTEAWACLC5A")));
fwd.Add(new AHAddress(Base32.Decode("CADSL6GUVBM6V442CETP4JTEAWACLC5A")));
RelayTransportAddress test_ta = new RelayTransportAddress(tun_ta.Target, fwd);
Assert.AreEqual(tun_ta, test_ta, "testing tunnel TA compression enhancements");
//Console.WriteLine(tun_ta.ToString());
//Console.WriteLine(test_ta.ToString());
Assert.AreEqual(tun_ta.ToString(), test_ta.ToString(), "testing tunnel TA compression enhancements (toString)");
Assert.AreEqual(tun_ta.ContainsForwarder(new AHAddress(Base32.Decode("CADSL6GVVBM6V442CETP4JTEAWACLC5A"))), true,
"testing tunnel TA contains forwarder (1)");
Assert.AreEqual(tun_ta.ContainsForwarder(new AHAddress(Base32.Decode("CADSL6GUVBM6V442CETP4JTEAWACLC5A"))), true,
"testing tunnel TA contains forwarder (2)");
}
public RelayEdgeCallbackAction(RelayTransportAddress tta, EdgeCreationCallback ecb)
{
RelayTA = tta;
Ecb = ecb;
Exception = new WriteOnce <Exception>();
Success = new WriteOnce <bool>();
Edge = new WriteOnce <Edge>();
}
/// <summary>Attempt to find the overlap in a remote RelayTransportAddress
/// and our local node. This will be used to help communicate with a new
/// tunneled peer.</summary>
public virtual List <Connection> FindOverlap(RelayTransportAddress 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 WrapperEdgeRegressionTest()
{
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);
WrapperEdge we_fe = new WrapperEdge(fe);
Connection fcon = new Connection(we_fe, addr, "structured", null, null);
List <Connection> overlap = new List <Connection>();
overlap.Add(fcon);
RelayTransportAddress tta = new RelayTransportAddress(addr, overlap);
RelayEdge te1 = new RelayEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
WrapperEdge we_te1 = new WrapperEdge(te1);
Connection t1con = new Connection(we_te1, addr, "structured", null, null);
overlap = new List <Connection>();
overlap.Add(t1con);
RelayEdge te2 = new RelayEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
WrapperEdge we_te2 = new WrapperEdge(te2);
Connection t2con = new Connection(we_te2, addr, "structured", null, null);
overlap = new List <Connection>();
overlap.Add(t2con);
RelayEdge te3 = new RelayEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
WrapperEdge we_te3 = new WrapperEdge(te3);
Connection t3con = new Connection(we_te3, addr, "structured", null, null);
overlap = new List <Connection>();
overlap.Add(t3con);
RelayEdge te4 = new RelayEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
WrapperEdge we_te4 = new WrapperEdge(te4);
Connection t4con = new Connection(we_te4, addr, "structured", null, null);
overlap = new List <Connection>();
overlap.Add(t4con);
RelayEdge te5 = new RelayEdge(null, tta, tta, new SimpleForwarderSelector(), overlap);
WrapperEdge we_te5 = new WrapperEdge(te5);
Connection t5con = new Connection(we_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>Does not immediately create an edge to a remote node, instead,
/// it tells a timer to wait 5 seconds prior to attempting an edge.</summary>
public override void CreateEdgeTo(TransportAddress ta, EdgeCreationCallback ecb)
{
RelayTransportAddress tta = ta as RelayTransportAddress;
if (tta == null)
{
ecb(false, null, new Exception("TA Type is not Relay!"));
}
else
{
RelayEdgeCallbackAction teca = new RelayEdgeCallbackAction(tta, ecb);
System.Action <DateTime> callback = delegate(DateTime now) {
CreateEdgeTo(teca);
};
Brunet.Util.FuzzyTimer.Instance.DoAfter(callback, 10000, 0);
}
}
/// <summary>When a disconnection occurs, we must make sure that none of
/// our tunnels use that faulty edge / connection any more.</summary>
protected void DisconnectionHandler(object o, EventArgs ea)
{
ConnectionEventArgs cea = ea as ConnectionEventArgs;
if (cea.ConnectionType != ConnectionType.Structured)
{
return;
}
ConnectionList cons = cea.CList;
Interlocked.Exchange(ref _connections, cons);;
IList addresses = GetNearest(_node.Address, cons);
TransportAddress ta = new RelayTransportAddress(_node.Address, addresses);
ArrayList tas = new ArrayList(1);
tas.Add(ta);
Interlocked.Exchange(ref _local_tas, tas);
foreach (RelayEdge te in _tunnels)
{
te.DisconnectionHandler(cea.Connection);
if (te.IsClosed)
{
continue;
}
IDictionary sync_message = _ito.GetSyncMessage(te.Overlap, _node.Address, cons);
//Just do our best here:
try { _node.Rpc.Invoke(te, null, "tunnel.Sync", sync_message); }
catch { }
}
}
/// <summary>Outgoing edge, since we don't know the RemoteID yet!</summary>
public RelayEdge(IEdgeSendHandler send_handler, RelayTransportAddress local_ta,
RelayTransportAddress remote_ta, IForwarderSelector ias, List <Connection> overlap) :
this(send_handler, local_ta, remote_ta, ias, overlap, -1)
{
}
