public void BucketRefreshTest()
{
var nodes = new List<Node>();
for (var i = 0; i < 5; i++)
nodes.Add(new Node(NodeId.Create(), new IPEndPoint(IPAddress.Any, i)));
_engine.TimeOut = TimeSpan.FromMilliseconds(25);
_engine.BucketRefreshTimeout = TimeSpan.FromMilliseconds(75);
_engine.MessageLoop.QuerySent += delegate(object o, SendQueryEventArgs e)
{
DhtEngine.MainLoop.Queue(delegate
{
if (!e.TimedOut)
return;
var current = nodes.Find(n => n.EndPoint.Port.Equals(e.EndPoint.Port));
if (current == null)
return;
if (e.Query is Ping)
{
var r = new PingResponse(current.Id, e.Query.TransactionId);
_listener.RaiseMessageReceived(r, current.EndPoint);
}
else if (e.Query is FindNode)
{
var response = new FindNodeResponse(current.Id, e.Query.TransactionId) {Nodes = ""};
_listener.RaiseMessageReceived(response, current.EndPoint);
}
});
};
_engine.Add(nodes);
_engine.Start();
Thread.Sleep(500);
foreach (var b in _engine.RoutingTable.Buckets)
{
Assert.IsTrue(b.LastChanged > DateTime.UtcNow.AddSeconds(-2));
Assert.IsTrue(b.Nodes.Exists(n => n.LastSeen > DateTime.UtcNow.AddMilliseconds(-900)));
}
}
public void PingTimeout()
{
engine.TimeOut = TimeSpan.FromHours(1);
// Send ping
Ping ping = new Ping(node.Id);
ping.TransactionId = transactionId;
ManualResetEvent handle = new ManualResetEvent(false);
SendQueryTask task = new SendQueryTask(engine, ping, node);
task.Completed += delegate {
handle.Set();
};
task.Execute();
// Receive response
PingResponse response = new PingResponse(node.Id, transactionId);
listener.RaiseMessageReceived(response, node.EndPoint);
Assert.IsTrue(handle.WaitOne(1000, true), "#0");
engine.TimeOut = TimeSpan.FromMilliseconds(75);
DateTime lastSeen = node.LastSeen;
// Time out a ping
ping = new Ping(node.Id);
ping.TransactionId = (BEncodedString)"ab";
task = new SendQueryTask(engine, ping, node, 4);
task.Completed += delegate { handle.Set(); };
handle.Reset();
task.Execute();
handle.WaitOne();
Assert.AreEqual(4, node.FailedCount, "#1");
Assert.AreEqual(NodeState.Bad, node.State, "#2");
Assert.AreEqual(lastSeen, node.LastSeen, "#3");
}
public void NodeReplaceTest()
{
_engine.TimeOut = TimeSpan.FromMilliseconds(25);
var handle = new ManualResetEvent(false);
var b = new Bucket();
for (var i = 0; i < Bucket.MaxCapacity; i++)
{
var n = new Node(NodeId.Create(), new IPEndPoint(IPAddress.Any, i))
{
LastSeen = DateTime.UtcNow
};
b.Add(n);
}
b.Nodes[3].LastSeen = DateTime.UtcNow.AddDays(-5);
b.Nodes[1].LastSeen = DateTime.UtcNow.AddDays(-4);
b.Nodes[5].LastSeen = DateTime.UtcNow.AddDays(-3);
_engine.MessageLoop.QuerySent += delegate(object o, SendQueryEventArgs e)
{
if (!e.TimedOut)
return;
b.Nodes.Sort();
if ((e.EndPoint.Port == 3 && _nodeCount == 0) ||
(e.EndPoint.Port == 1 && _nodeCount == 1) ||
(e.EndPoint.Port == 5 && _nodeCount == 2))
{
var n = b.Nodes.Find(delegate(Node no) { return no.EndPoint.Port == e.EndPoint.Port; });
n.Seen();
var response = new PingResponse(n.Id, e.Query.TransactionId);
DhtEngine.MainLoop.Queue(delegate
{
//System.Threading.Thread.Sleep(100);
Console.WriteLine("Faking the receive");
_listener.RaiseMessageReceived(response, _node.EndPoint);
});
_nodeCount++;
}
};
var task = new ReplaceNodeTask(_engine, b, null);
// FIXME: Need to assert that node 0.0.0.0:0 is the one which failed - i.e. it should be replaced
task.Completed += (o, e) => handle.Set();
task.Execute();
Assert.IsTrue(handle.WaitOne(4000, false), "#10");
}
public void SendQueryTaskSucceed()
{
_engine.TimeOut = TimeSpan.FromMilliseconds(25);
var ping = new Ping(_engine.LocalId) {TransactionId = _transactionId};
_engine.MessageLoop.QuerySent += delegate(object o, SendQueryEventArgs e)
{
if (!e.TimedOut)
return;
_counter++;
var response = new PingResponse(_node.Id, _transactionId);
_listener.RaiseMessageReceived(response, _node.EndPoint);
};
var task = new SendQueryTask(_engine, ping, _node);
task.Completed += delegate { _handle.Set(); };
task.Execute();
Assert.IsTrue(_handle.WaitOne(3000, false), "#1");
Thread.Sleep(200);
Assert.AreEqual(1, _counter, "#2");
var n = _engine.RoutingTable.FindNode(_node.Id);
Assert.IsNotNull(n, "#3");
Assert.IsTrue(n.LastSeen > DateTime.UtcNow.AddSeconds(-2));
}
public void PingResponseEncode()
{
var m = new PingResponse(_infohash, _transactionId);
Compare(m, "d1:rd2:id20:mnopqrstuvwxyz123456e1:t2:aa1:y1:re");
}
public void SendPing()
{
engine.Add(node);
engine.TimeOut = TimeSpan.FromMilliseconds(75);
ManualResetEvent handle = new ManualResetEvent(false);
engine.MessageLoop.QuerySent += delegate(object o, SendQueryEventArgs e) {
if (!e.TimedOut && e.Query is Ping)
handle.Set();
if (!e.TimedOut || !(e.Query is Ping))
return;
PingResponse response = new PingResponse(node.Id, e.Query.TransactionId);
listener.RaiseMessageReceived(response, e.EndPoint);
};
Assert.AreEqual(NodeState.Unknown, node.State, "#1");
DateTime lastSeen = node.LastSeen;
Assert.IsTrue(handle.WaitOne(1000, false), "#1a");
Node nnnn = node;
node = engine.RoutingTable.FindNode(nnnn.Id);
Assert.IsTrue (lastSeen < node.LastSeen, "#2");
Assert.AreEqual(NodeState.Good, node.State, "#3");
}