/**
* Constructor.
* @param n local node
* @param service local network coordinate service
*/
public VivaldiTargetSelector(Node n, NCService service) {
_sync = new object();
_channel_to_state = new Hashtable();
_node = n;
_nc_service = service;
_num_requests = 0;
#if VTS_DEBUG
lock(_sync) {
_node.StateChangeEvent += delegate(Node node, Node.ConnectionState s) {
if( s == Node.ConnectionState.Joining ) {
lock(_class_lock) {
_vts_nodes[node] = null;
if (_vts_nodes.Keys.Count == 1) { //first node
Console.Error.WriteLine("Starting the VTS checkpoint thread. ");
_checkpoint_thread = new Thread(CheckpointThread);
_checkpoint_thread_finished = 0;
_checkpoint_thread.Start();
}
}
}
};
_node.StateChangeEvent += delegate(Node node, Node.ConnectionState s) {
if( s == Node.ConnectionState.Disconnected ) {
lock(_class_lock) {
_vts_nodes.Remove(node);
if (_vts_nodes.Keys.Count == 0) { //last node to leave
Console.Error.WriteLine("Interrupting the VTS checkpoint thread. ");
Interlocked.Exchange(ref _checkpoint_thread_finished, 1);
_checkpoint_thread.Interrupt();
_checkpoint_thread.Join();
Console.Error.WriteLine("Join with the VTS checkpoint thread (finished).");
}
}
}
};
}
#endif
}
public NCTunnelOverlap(NCService ncservice)
{
_ncservice = ncservice;
}
/**
<summary>Creates a Brunet.Node, the resulting node will be available in
the class as _node.</summary>
<remarks>The steps to creating a node are first constructing it with a
namespace, optionally adding local ip addresses to bind to, specifying
local end points, specifying remote end points, and finally registering
the dht.</remarks>
*/
public virtual void CreateNode() {
AHAddress address = (AHAddress) AddressParser.Parse(_node_config.NodeAddress);
_node = new StructuredNode(address, _node_config.BrunetNamespace);
IEnumerable addresses = IPAddresses.GetIPAddresses(_node_config.DevicesToBind);
Brunet.EdgeListener el = null;
foreach(NodeConfig.EdgeListener item in _node_config.EdgeListeners) {
int port = item.port;
if (item.type =="tcp") {
try {
el = new TcpEdgeListener(port, addresses);
}
catch {
el = new TcpEdgeListener(0, addresses);
}
}
else if (item.type == "udp") {
try {
el = new UdpEdgeListener(port, addresses);
}
catch {
el = new UdpEdgeListener(0, addresses);
}
}
else {
throw new Exception("Unrecognized transport: " + item.type);
}
_node.AddEdgeListener(el);
}
el = new TunnelEdgeListener(_node);
_node.AddEdgeListener(el);
ArrayList RemoteTAs = null;
if(_node_config.RemoteTAs != null) {
RemoteTAs = new ArrayList();
foreach(String ta in _node_config.RemoteTAs) {
RemoteTAs.Add(TransportAddressFactory.CreateInstance(ta));
}
_node.RemoteTAs = RemoteTAs;
}
try {
if (_node_config.NCService.Enabled) {
_ncservice = new NCService(_node, _node_config.NCService.Checkpoint);
if (_node_config.NCService.OptimizeShortcuts) {
_node.Sco.TargetSelector = new VivaldiTargetSelector(_node, _ncservice);
}
}
} catch {}
_dht = new Dht(_node, 3, 20);
}
public void Test()
{
Address addr_x = new AHAddress(new RNGCryptoServiceProvider());
byte[] addrbuff = Address.ConvertToAddressBuffer(addr_x.ToBigInteger() + (Address.Full / 2));
Address.SetClass(addrbuff, AHAddress._class);
Address addr_y = new AHAddress(addrbuff);
List<Connection> connections = new List<Connection>();
ConnectionTable ct_x = new ConnectionTable();
ConnectionTable ct_y = new ConnectionTable();
ConnectionTable ct_empty = new ConnectionTable();
NCService ncservice = new NCService();
Connection fast_con = null;
for(int i = 1; i <= 11; i++) {
addrbuff = Address.ConvertToAddressBuffer(addr_x.ToBigInteger() + (i * Address.Full / 16));
Address.SetClass(addrbuff, AHAddress._class);
Address addr = new AHAddress(addrbuff);
Connection con = null;
TransportAddress ta = TransportAddressFactory.CreateInstance("brunet.tcp://158.7.0.1:5000");
Edge fe = new FakeEdge(ta, ta, TransportAddress.TAType.Tcp);
if(i <= 10) {
con = new Connection(fe, addr, "structured", null, null);
ct_x.Add(con);
if(i % 2 == 0) {
ncservice.ProcessSample(DateTime.UtcNow, String.Empty, addr,
new Point(new double[] {0, 0}, 0), 0, i*10);
}
} else {
fast_con = new Connection(fe, addr, "structured", null, null);
ncservice.ProcessSample(DateTime.UtcNow, String.Empty, addr,
new Point(new double[] {0, 0}, 0), 0, 5);
}
if(i == 10) {
ct_y.Add(con);
}
connections.Add(con);
}
ITunnelOverlap sto = new SimpleTunnelOverlap();
ITunnelOverlap nto = new NCTunnelOverlap(ncservice);
ConnectionType con_type = ConnectionType.Structured;
List<Connection> pre_cons = new List<Connection>();
pre_cons.Add(connections[9]);
IDictionary id = nto.GetSyncMessage(pre_cons, addr_x, ct_x.GetConnections(con_type));
// We do have some pre-existing overlap
Assert.AreEqual(nto.EvaluateOverlap(ct_y.GetConnections(con_type), id)[0], connections[9], "NC: Have an overlap!");
Assert.AreEqual(sto.EvaluateOverlap(ct_y.GetConnections(con_type), id)[0], connections[9], "Simple: Have an overlap!");
// We have no overlap with an empty connection table
Assert.AreEqual(nto.EvaluateOverlap(ct_empty.GetConnections(con_type), id).Count, 0, "No overlap!");
Assert.AreEqual(sto.EvaluateOverlap(ct_empty.GetConnections(con_type), id).Count, 0, "No overlap!");
// latency[0] == -1
Assert.AreEqual(connections[1].Address.Equals(nto.EvaluatePotentialOverlap(id)), true,
"NC: EvaluatePotentialOverlap returns expected!");
Assert.AreEqual(ct_x.Contains(con_type, sto.EvaluatePotentialOverlap(id)), true,
"Simple: EvaluatePotentialOverlap returns valid!");
ct_y.Add(fast_con);
ct_x.Add(fast_con);
id = nto.GetSyncMessage(pre_cons, addr_x, ct_x.GetConnections(con_type));
Assert.AreEqual(fast_con.Address.Equals(nto.EvaluatePotentialOverlap(id)), true,
"NC: EvaluatePotentialOverlap returns expected!");
Assert.AreEqual(nto.EvaluateOverlap(ct_y.GetConnections(con_type), id)[0], fast_con, "NC: Have better overlap!");
}
public void TestSerialize() {
NCService nc_service = new NCService();
Hashtable ht1 = nc_service.EchoVivaldiState();
MemoryStream ms = new MemoryStream();
int serialized = AdrConverter.Serialize(ht1, ms);
byte[] buf = ms.ToArray();
Assert.AreEqual(serialized, buf.Length, "Buffer length same as written");
ms.Seek(0, SeekOrigin.Begin);
object o = AdrConverter.Deserialize(ms);
Hashtable ht = o as Hashtable;
Assert.IsTrue(ht != null);
Hashtable ht_position = (Hashtable) ht["position"];
Point o_position =
new Point((double[]) ((ArrayList) ht_position["side"]).ToArray(typeof(double)), (double) ht_position["height"]);
double o_weightedError = (double) ht["error"];
//
// Make sure that the values obtained match the orgininal NC state.
//
NCService.VivaldiState state = nc_service.State;
Assert.IsTrue(o_position.Equals(state.Position));
Assert.AreEqual(o_weightedError, state.WeightedError);
}
public void TestService() {
NCService nc_service = new NCService();
DateTime now = DateTime.UtcNow;
Address addr_remote = new AHAddress(new RNGCryptoServiceProvider());
Address addr_remote1 = new AHAddress(new RNGCryptoServiceProvider());
Address addr_remote2 = new AHAddress(new RNGCryptoServiceProvider());
nc_service.ProcessSample(now + new TimeSpan(0, 0, 5), "local-test", addr_remote,
new Point(new double[] {(double) 3.0, (double) 4.0}, 0),
(double) 0.9, (double)10.0);
NCService.VivaldiState state = nc_service.State;
nc_service.ProcessSample(now + new TimeSpan(0, 0, 6), "local-test",addr_remote1,
new Point(new double[] {(double) 10.0, (double) 2.0}, 0),
(double) 0.9, (double)10.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 6), "local-test",addr_remote2,
new Point(new double[] {(double) 5.0, (double) 6.0}, 0),
(double) 0.9, (double)10.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 7), "local-test",addr_remote,
new Point(new double[] {(double) 3.0, (double) 4.0}, 0),
(double) 0.8, (double)12.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 8), "local-test",addr_remote1,
new Point(new double[] {(double) 10.0, (double) 2.0}, 0),
(double) 0.8, (double)12.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 9), "local-test",addr_remote,
new Point(new double[] {(double) 3.0, (double) 4.0}, 0),
(double)0.7, (double)13.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 11), "local-test",addr_remote1,
new Point(new double[] {(double) 10.0, (double) 2.0}, 0),
(double)0.7, (double)13.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 12), "local-test",addr_remote,
new Point(new double[] {(double) 3.0, (double) 4.0}, 0),
(double)0.6, (double)10.0);
nc_service.ProcessSample(now + new TimeSpan(0, 0, 13), "local-test",addr_remote1,
new Point(new double[] {(double) 10.0, (double) 2.0}, 0),
(double)0.6, (double)10.0);
state = nc_service.State;
Console.Error.WriteLine("position: {0}, error: {1}", state.Position, state.WeightedError);
}
/**
<summary>Creates a Brunet.Node, the resulting node will be available in
the class as _node.</summary>
<remarks>The steps to creating a node are first constructing it with a
namespace, optionally adding local ip addresses to bind to, specifying
local end points, specifying remote end points, and finally registering
the dht.</remarks>
*/
public virtual void CreateNode(string type) {
NodeConfig node_config = null;
StructuredNode current_node = null;
AHAddress address = null;
if (type == "cache") {
node_config = _c_node_config;
address = (AHAddress) AddressParser.Parse(node_config.NodeAddress);
current_node = new StructuredNode(address, node_config.BrunetNamespace);
}
else if ( type == "query" ) {
node_config = _q_node_config;
address = (AHAddress) AddressParser.Parse(node_config.NodeAddress);
current_node = new StructuredNode(address, node_config.BrunetNamespace);
}
else {
throw new Exception("Unrecognized node type: " + type);
}
IEnumerable addresses = IPAddresses.GetIPAddresses(node_config.DevicesToBind);
Brunet.EdgeListener el = null;
foreach(NodeConfig.EdgeListener item in node_config.EdgeListeners) {
int port = item.port;
if (item.type =="tcp") {
try {
el = new TcpEdgeListener(port, addresses);
}
catch {
el = new TcpEdgeListener(0, addresses);
}
}
else if (item.type == "udp") {
try {
el = new UdpEdgeListener(port, addresses);
}
catch {
el = new UdpEdgeListener(0, addresses);
}
}
else {
throw new Exception("Unrecognized transport: " + item.type);
}
current_node.AddEdgeListener(el);
}
el = new TunnelEdgeListener(current_node);
current_node.AddEdgeListener(el);
ArrayList RemoteTAs = null;
if(node_config.RemoteTAs != null) {
RemoteTAs = new ArrayList();
foreach(String ta in node_config.RemoteTAs) {
RemoteTAs.Add(TransportAddressFactory.CreateInstance(ta));
}
current_node.RemoteTAs = RemoteTAs;
}
try {
if (node_config.NCService.Enabled) {
if (type == "cache") {
_c_ncservice = new NCService(current_node, node_config.NCService.Checkpoint);
if (node_config.NCService.OptimizeShortcuts) {
current_node.Sco.TargetSelector = new VivaldiTargetSelector(current_node, _c_ncservice);
}
}
else {
_q_ncservice = new NCService(current_node, node_config.NCService.Checkpoint);
if (node_config.NCService.OptimizeShortcuts) {
current_node.Sco.TargetSelector = new VivaldiTargetSelector(current_node, _q_ncservice);
}
}
}
} catch {}
if (type == "cache") {
_c_dht = new Dht(current_node, 3, 20);
_cs = new CacheList(current_node);
current_node.MapReduce.SubscribeTask(new MapReduceCache(current_node,_cs));
current_node.MapReduce.SubscribeTask(new MapReduceCrawl(current_node));
_c_node = current_node;
}
else {
_q_dht = new Dht(current_node, 3, 20);
CacheList q_cs = new CacheList(current_node);
current_node.MapReduce.SubscribeTask(new MapReduceQuery(current_node,_cs));
current_node.MapReduce.SubscribeTask(new MapReduceCrawl(current_node));
_q_node = current_node;
}
}
/// <summary>Creates a Brunet.Node, the resulting node will be available in
/// the class as _node.</summary>
/// <remarks>The steps to creating a node are first constructing it with a
/// namespace, optionally adding local ip addresses to bind to, specifying
/// local end points, specifying remote end points, and finally registering
/// the dht.</remarks>
public virtual void CreateNode() {
AHAddress address = null;
try {
address = (AHAddress) AddressParser.Parse(_node_config.NodeAddress);
} catch {
address = Utils.GenerateAHAddress();
}
_node = new StructuredNode(address, _node_config.BrunetNamespace);
IEnumerable addresses = IPAddresses.GetIPAddresses(_node_config.DevicesToBind);
if(_node_config.Security.Enabled) {
if(_node_config.Security.SelfSignedCertificates) {
SecurityPolicy.SetDefaultSecurityPolicy(SecurityPolicy.DefaultEncryptor,
SecurityPolicy.DefaultAuthenticator, true);
}
byte[] blob = null;
using(FileStream fs = File.Open(_node_config.Security.KeyPath, FileMode.Open)) {
blob = new byte[fs.Length];
fs.Read(blob, 0, blob.Length);
}
RSACryptoServiceProvider rsa_private = new RSACryptoServiceProvider();
rsa_private.ImportCspBlob(blob);
CertificateHandler ch = new CertificateHandler(_node_config.Security.CertificatePath);
_bso = new ProtocolSecurityOverlord(_node, rsa_private, _node.Rrm, ch);
_bso.Subscribe(_node, null);
_node.GetTypeSource(SecurityOverlord.Security).Subscribe(_bso, null);
_node.HeartBeatEvent += _bso.Heartbeat;
if(_node_config.Security.TestEnable) {
blob = rsa_private.ExportCspBlob(false);
RSACryptoServiceProvider rsa_pub = new RSACryptoServiceProvider();
rsa_pub.ImportCspBlob(blob);
CertificateMaker cm = new CertificateMaker("United States", "UFL",
"ACIS", "David Wolinsky", "*****@*****.**", rsa_pub,
"brunet:node:abcdefghijklmnopqrs");
Certificate cacert = cm.Sign(cm, rsa_private);
cm = new CertificateMaker("United States", "UFL",
"ACIS", "David Wolinsky", "*****@*****.**", rsa_pub,
address.ToString());
Certificate cert = cm.Sign(cacert, rsa_private);
ch.AddCACertificate(cacert.X509);
ch.AddSignedCertificate(cert.X509);
}
}
Brunet.EdgeListener el = null;
foreach(NodeConfig.EdgeListener item in _node_config.EdgeListeners) {
int port = item.port;
if(item.type == "tcp") {
try {
el = new TcpEdgeListener(port, addresses);
}
catch {
el = new TcpEdgeListener(0, addresses);
}
} else if(item.type == "udp") {
try {
el = new UdpEdgeListener(port, addresses);
}
catch {
el = new UdpEdgeListener(0, addresses);
}
} else if(item.type == "function") {
port = port == 0 ? (new Random()).Next(1024, 65535) : port;
el = new FunctionEdgeListener(port, 0, null);
} else {
throw new Exception("Unrecognized transport: " + item.type);
}
if(_node_config.Security.SecureEdgesEnabled) {
el = new SecureEdgeListener(el, _bso);
}
_node.AddEdgeListener(el);
}
ArrayList RemoteTAs = null;
if(_node_config.RemoteTAs != null) {
RemoteTAs = new ArrayList();
foreach(String ta in _node_config.RemoteTAs) {
RemoteTAs.Add(TransportAddressFactory.CreateInstance(ta));
}
_node.RemoteTAs = RemoteTAs;
}
ITunnelOverlap ito = null;
if(_node_config.NCService.Enabled) {
_ncservice = new NCService(_node, _node_config.NCService.Checkpoint);
if (_node_config.NCService.OptimizeShortcuts) {
_node.Ssco.TargetSelector = new VivaldiTargetSelector(_node, _ncservice);
}
ito = new NCTunnelOverlap(_ncservice);
} else {
ito = new SimpleTunnelOverlap();
}
el = new Tunnel.TunnelEdgeListener(_node, ito);
if(_node_config.Security.SecureEdgesEnabled) {
_node.EdgeVerifyMethod = EdgeVerify.AddressInSubjectAltName;
el = new SecureEdgeListener(el, _bso);
}
_node.AddEdgeListener(el);
new TableServer(_node);
_dht = new Dht(_node, 3, 20);
_dht_proxy = new RpcDhtProxy(_dht, _node);
}
