/// <summary>
/// Method that runs the kademlia layer
/// </summary>
/// <param name="single">if true indicates that the kademlia layer have to do a single start</param>
/// <param name="btpNode">if indicated, it represents the node suggested to do bootstrap</param>
/// <param name="svcHost">a service host object where is stored newly initalized host.</param>
private void runKademliaLayer(bool single, string btpNode, ref ServiceHost svcHost)
{
log.Info("Running Kademlia layer.");
KademliaNode node = new KademliaNode(new EndpointAddress(kademliaAddress), new EndpointAddress(transportAddress));
ServiceHost kadHost = new ServiceHost(node, kademliaAddress);
try
{
kadHost.Open();
}
catch (AddressAlreadyInUseException aaiue)
{
log.Error("Unable to Connect as a Server because there is already one on this machine", aaiue);
throw aaiue;
}
try
{
this.kademliaLayer = new Dht(node, single, btpNode);
}
catch (FileNotFoundException fnfe)
{
log.Error("Unable to load nodes file (nodes.xml)", fnfe);
throw fnfe;
}
List <TrackModel.Track> list = new List <TrackModel.Track>();
log.Debug("GetAll Response : " + this.trackRep.GetAll(list));
Parallel.ForEach(list, t =>
{
this.kademliaLayer.Put(t.Filename);
});
svcHost = kadHost;
}
private bool CreateKademliaNode(int id)
{
foreach (KademliaNode node in _kademliaNodes)
{
if (node.GetId() == id)
{
return(false);
}
}
KademliaNode newNode = new KademliaNode(id);
if (id != 0)
{
newNode.Bootstrap(_kademliaNodes[0]);
}
_kademliaNodes.Add(newNode);
return(true);
}
/// <summary>
/// Create a DHT using the given master server, and specify whether to publish our IP.
/// PRECONDITION: Create one per app or you will have a node ID collision.
/// </summary>
/// <param name="dhtNode">The KademliaNode that is used to communicate using the protocol</param>
/// <param name="alreadyBootstrapped">Checks if the node have or not to bootstrap</param>
/// <param name="btpNode">The node to bootstrap with (can be leaved null)</param>
public Dht(KademliaNode dhtNode = null, bool alreadyBootstrapped = false, string btpNode = "")
{
if (dhtNode != null)
{
this.dhtNode = dhtNode;
}
else
{
dhtNode = new KademliaNode();
}
if (!alreadyBootstrapped)
{
if (btpNode == "")
{
int ourPort = dhtNode.GetPort();
log.Info("We are on UDP port " + ourPort.ToString());
log.Info("Getting bootstrap list...");
AppSettingsReader asr = new AppSettingsReader();
XDocument xmlDoc = XDocument.Load((string)asr.GetValue("KademliaNodesFile", typeof(string)));
List<EndpointAddress> nodes = new List<EndpointAddress>(from node in xmlDoc.Descendants("Node")
select new EndpointAddress("soap.udp://" + node.Element("Host").Value + ":" + node.Element("Port").Value + "/kademlia"));
foreach (var node in nodes)
{
if (dhtNode.AsyncBootstrap(nodes))
{
log.Debug("OK!");
}
else
{
log.Debug("Failed.");
}
}
}
else
{
try
{
log.Debug("Bootstrapping with " + btpNode);
EndpointAddress bootstrapNode = new EndpointAddress(btpNode);
if (dhtNode.Bootstrap(bootstrapNode))
{
log.Debug("OK!");
}
else
{
log.Debug("Failed.");
}
}
catch (Exception ex)
{
log.Error("Bad entry!", ex);
}
}
}
else
{
log.Info("Self Bootstrapping");
dhtNode.Bootstrap();
}
// Join the network officially
log.Info("Trying to join network....");
if(dhtNode.JoinNetwork()) {
log.Info("Online");
} else {
log.Warn("Unable to connect to Kademlia overlay!\n"
+ "Check that nodes list has accessible nodes.");
}
}
public static void Main(string[] args)
{
Console.WriteLine("ID tests");
byte[] aData = new byte[20];
aData[3] = 10;
byte[] bData = new byte[20];
bData[1] = 10;
ID a = new ID(aData);
ID b = new ID(bData);
Debug.Assert(a != b);
Debug.Assert(a == a);
Debug.Assert(!(b == a));
Debug.Assert(a < b);
Debug.Assert(b > a);
Debug.Assert(a.Equals(a));
Debug.Assert(!a.Equals(b));
Debug.Assert(a.GetHashCode() != b.GetHashCode());
Debug.Assert(a.DifferingBit(b) == 4 * 8 - 2); // next to last bit of 4th byte differs
Console.WriteLine("Test complete");
Console.WriteLine("Testing KademilaNode");
KademliaNode node1 = new KademliaNode(new EndpointAddress("soap.udp://localhost:8002/kademlia"));
ServiceHost host1 = new ServiceHost(node1, new Uri("soap.udp://localhost:8002/kademlia"));
KademliaNode node2 = new KademliaNode(new EndpointAddress("soap.udp://localhost:8001/kademlia"));
ServiceHost host2 = new ServiceHost(node2, new Uri("soap.udp://localhost:8001/kademlia"));
// node1.Bootstrap();
System.Threading.Thread.Sleep(50); // Wait for the other node to process its bucket queue
node1.JoinNetwork();
node2.JoinNetwork();
// Do a big test
List <KademliaNode> nl = new List <KademliaNode>();
KademliaNode lastNode = node1;
for (int i = 0; i < 10; i++)
{
KademliaNode node = new KademliaNode();
node.Bootstrap();
lastNode = node;
System.Threading.Thread.Sleep(50); // Wait for the other node to process its bucket queue
node.JoinNetwork();
nl.Add(node);
}
host1.Close();
host2.Close();
Console.WriteLine("Connectivity tests complete");
/*
* // Do a store test
* ID babiesID = ID.RandomID();
* node1.Put(babiesID, "=====I eat babies=====");
* Console.WriteLine("Store tests complete");
*
* // Get it back
* IList<string> foundVals = node1.Get(babiesID);
* foreach(string s in foundVals) {
* Console.WriteLine("1 Found: " + s);
* }
* foundVals = node2.Get(babiesID);
* foreach(string s in foundVals) {
* Console.WriteLine("2 Found: " + s);
* }
* Console.WriteLine("Find tests complete");
*
* Console.WriteLine("Testing DHT");
* Dht dht = new Dht("C:\\Users\\seby\\Documents\\progetto_malgeri\\p2p-player\\nodes"+Console.ReadLine()+".xml");
* dht.Put("A", "The value for A");
* Console.WriteLine("A = " + dht.Get("A"));
*
* Console.WriteLine("Multi-value test");
* dht.Put("Animal", "cat");
* dht.Put("Animal", "dog");
* dht.Put("Animal", "double-beaver");
* dht.Put("Animal", "wombat");
* dht.Put("Animal", "alot");
* Console.WriteLine("Animal entry count " + node1.Get(ID.Hash("Animal")).Count);
* Console.WriteLine("Animal entry count " + node2.Get(ID.Hash("Animal")).Count);
* Console.WriteLine("Arbitrary animal = " + dht.Get("Animal"));
*
*/
Console.WriteLine("Testing complete! Press any key to exit the program.");
Console.ReadLine();
}
/// <summary>
/// Method that runs the kademlia layer
/// </summary>
/// <param name="single">if true indicates that the kademlia layer have to do a single start</param>
/// <param name="btpNode">if indicated, it represents the node suggested to do bootstrap</param>
/// <param name="svcHost">a service host object where is stored newly initalized host.</param>
private void runKademliaLayer(bool single, string btpNode, ref ServiceHost svcHost)
{
log.Info("Running Kademlia layer.");
KademliaNode node = new KademliaNode(new EndpointAddress(kademliaAddress), new EndpointAddress(transportAddress));
ServiceHost kadHost = new ServiceHost(node, kademliaAddress);
try
{
kadHost.Open();
}
catch (AddressAlreadyInUseException aaiue)
{
log.Error("Unable to Connect as a Server because there is already one on this machine", aaiue);
throw aaiue;
}
try
{
this.kademliaLayer = new Dht(node, single, btpNode);
}
catch (FileNotFoundException fnfe)
{
log.Error("Unable to load nodes file (nodes.xml)", fnfe);
throw fnfe;
}
List<TrackModel.Track> list = new List<TrackModel.Track>();
log.Debug("GetAll Response : " + this.trackRep.GetAll(list));
Parallel.ForEach(list, t =>
{
this.kademliaLayer.Put(t.Filename);
});
svcHost = kadHost;
}
public static void Main(string[] args)
{
Console.WriteLine("ID tests");
byte[] aData = new byte[20];
aData[3] = 10;
byte[] bData = new byte[20];
bData[1] = 10;
ID a = new ID(aData);
ID b = new ID(bData);
Debug.Assert(a != b);
Debug.Assert(a == a);
Debug.Assert(!(b == a));
Debug.Assert(a < b);
Debug.Assert(b > a);
Debug.Assert(a.Equals(a));
Debug.Assert(!a.Equals(b));
Debug.Assert(a.GetHashCode() != b.GetHashCode());
Debug.Assert(a.DifferingBit(b) == 4 * 8 - 2); // next to last bit of 4th byte differs
Console.WriteLine("Test complete");
Console.WriteLine("Testing KademilaNode");
KademliaNode node1 = new KademliaNode(new EndpointAddress("soap.udp://localhost:8002/kademlia"));
ServiceHost host1 = new ServiceHost(node1, new Uri("soap.udp://localhost:8002/kademlia"));
KademliaNode node2 = new KademliaNode(new EndpointAddress("soap.udp://localhost:8001/kademlia"));
ServiceHost host2 = new ServiceHost(node2, new Uri("soap.udp://localhost:8001/kademlia"));
// node1.Bootstrap();
System.Threading.Thread.Sleep(50); // Wait for the other node to process its bucket queue
node1.JoinNetwork();
node2.JoinNetwork();
// Do a big test
List<KademliaNode> nl = new List<KademliaNode>();
KademliaNode lastNode = node1;
for(int i = 0; i < 10; i++) {
KademliaNode node = new KademliaNode();
node.Bootstrap();
lastNode = node;
System.Threading.Thread.Sleep(50); // Wait for the other node to process its bucket queue
node.JoinNetwork();
nl.Add(node);
}
host1.Close();
host2.Close();
Console.WriteLine("Connectivity tests complete");
/*
// Do a store test
ID babiesID = ID.RandomID();
node1.Put(babiesID, "=====I eat babies=====");
Console.WriteLine("Store tests complete");
// Get it back
IList<string> foundVals = node1.Get(babiesID);
foreach(string s in foundVals) {
Console.WriteLine("1 Found: " + s);
}
foundVals = node2.Get(babiesID);
foreach(string s in foundVals) {
Console.WriteLine("2 Found: " + s);
}
Console.WriteLine("Find tests complete");
Console.WriteLine("Testing DHT");
Dht dht = new Dht("C:\\Users\\seby\\Documents\\progetto_malgeri\\p2p-player\\nodes"+Console.ReadLine()+".xml");
dht.Put("A", "The value for A");
Console.WriteLine("A = " + dht.Get("A"));
Console.WriteLine("Multi-value test");
dht.Put("Animal", "cat");
dht.Put("Animal", "dog");
dht.Put("Animal", "double-beaver");
dht.Put("Animal", "wombat");
dht.Put("Animal", "alot");
Console.WriteLine("Animal entry count " + node1.Get(ID.Hash("Animal")).Count);
Console.WriteLine("Animal entry count " + node2.Get(ID.Hash("Animal")).Count);
Console.WriteLine("Arbitrary animal = " + dht.Get("Animal"));
*/
Console.WriteLine("Testing complete! Press any key to exit the program.");
Console.ReadLine();
}
