Tunnels provide the ability for disconnected peers to form via existing overlay connections. For example, two nodes behind asymmetric NATs can form a tunnel over a common peer forming a virtual direct link between each other. Tunnels provide a mechanism for forming a complete ring.
Inheritance: EdgeListener, IEdgeSendHandler, IDataHandler, IRpcHandler
Exemplo n.º 1
0
    /**
    <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;
      ProtocolSecurityOverlord bso;

      if (type == "cache") {
        node_config = _c_node_config; //Node configuration file: the description of service that node provides
        address = (AHAddress) AddressParser.Parse(node_config.NodeAddress);
        current_node = new StructuredNode(address, node_config.BrunetNamespace); // DeetooNode consists of two Structured Nodes
        bso = _c_bso;
      }
      else if ( type == "query" ) {
        node_config = _q_node_config;
        address = (AHAddress) AddressParser.Parse(node_config.NodeAddress);
        current_node = new StructuredNode(address, node_config.BrunetNamespace);
        bso = _q_bso;
      }
      else {
        throw new Exception("Unrecognized node type: " + type);
      }
      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(current_node, rsa_private, current_node.Rrm, ch);
        bso.Subscribe(current_node, null);

        current_node.GetTypeSource(SecurityOverlord.Security).Subscribe(bso, null);
        current_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);
        }
      }

      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);
        }
        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;
      }
      ITunnelOverlap ito = null;
      ito = new SimpleTunnelOverlap();

      el = new Tunnel.TunnelEdgeListener(current_node, ito);
      if(node_config.Security.SecureEdgesEnabled) {
        current_node.EdgeVerifyMethod = EdgeVerify.AddressInSubjectAltName;
        el = new SecureEdgeListener(el, bso);
      }      
      current_node.AddEdgeListener(el);

      new TableServer(current_node);
      if (type == "cache") {
        _c_dht = new Dht(current_node, 3, 20);
        _c_dht_proxy = new RpcDhtProxy(_c_dht, current_node);
        _cs = new CacheList(current_node);
	//_cll = new ClusterList(current_node);
        //current_node.MapReduce.SubscribeTask(new MapReduceClusterCache(current_node, _cll));
        current_node.MapReduce.SubscribeTask(new MapReduceCache(current_node,_cs));
        Console.WriteLine("MapReduceCacheTask is subscribed at {0}", current_node.Address);
        _c_node = current_node;
      }
      else {
        _q_dht = new Dht(current_node, 3, 20);
        _q_dht_proxy = new RpcDhtProxy(_c_dht, current_node);
        CacheList q_cs = new CacheList(current_node);
        //current_node.MapReduce.SubscribeTask(new MapReduceClusterQuery(current_node, _cll));
        current_node.MapReduce.SubscribeTask(new MapReduceQuery(current_node,_cs));
        Console.WriteLine("MapReduceQueryTask is subscribed at {0}", current_node.Address);
        _q_node = current_node;
      }
    }
Exemplo n.º 2
0
    /// <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);
        }
      }

      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);
    }
Exemplo n.º 3
0
    /// <summary>Creates an ApplicationNode and prepares it for connection to
    /// the overlay.  For historical reasons it is linked to _node, _dht,
    /// _rpc_dht, and _bso.</summary>
    public virtual ApplicationNode CreateNode(NodeConfig node_config) {
      // Get a Node ID for the new Node
      AHAddress address = null;
      try {
        address = (AHAddress) AddressParser.Parse(node_config.NodeAddress);
      } catch {
        address = Utils.GenerateAHAddress();
      }

      // Create the Node state
      StructuredNode node = new StructuredNode(address, node_config.BrunetNamespace);
      IEnumerable addresses = IPAddresses.GetIPAddresses(node_config.DevicesToBind);

      ProtocolSecurityOverlord pso = null;
      // Enable Security if requested
      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);
        pso = new ProtocolSecurityOverlord(node, rsa_private, node.Rrm, ch);
        pso.Subscribe(node, null);

        node.GetTypeSource(SecurityOverlord.Security).Subscribe(pso, null);
        node.HeartBeatEvent += pso.Heartbeat;

        // A hack to enable a test for security that doesn't require each peer
        // to exchange certificates
        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);
        }
      }

      // Add Dht
      new TableServer(node);
      IDht dht = new Dht(node, 3, 20);
      RpcDhtProxy dht_proxy = new RpcDhtProxy(dht, node);

      // Setup Vivaldi if requested
      ITunnelOverlap ito = null;
      NCService ncservice = 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();
      }

      // Create the ApplicationNode
      ApplicationNode app_node = new ApplicationNode(node, dht, dht_proxy, ncservice, pso);

      // Add Edge listeners
      EdgeListener el = null;
      foreach(NodeConfig.EdgeListener item in node_config.EdgeListeners) {
        el = CreateEdgeListener(item, app_node, addresses);
        if(node_config.Security.SecureEdgesEnabled) {
          el = new SecureEdgeListener(el, pso);
        }
        node.AddEdgeListener(el);
      }

      // Create the tunnel and potentially wrap it in a SecureEL
      el = new Tunnel.TunnelEdgeListener(node, ito);
      if(node_config.Security.SecureEdgesEnabled) {
        node.EdgeVerifyMethod = EdgeVerify.AddressInSubjectAltName;
        el = new SecureEdgeListener(el, pso);
      }
      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;
      }

      // Add XmlRpc
      if(node_config.XmlRpcManager.Enabled) {
        if(_xrm == null) {
          _xrm = new XmlRpcManagerServer(node_config.XmlRpcManager.Port);
        }
        _xrm.Add(node, GetXmlRpcUri(app_node));
        new RpcDht(dht, node);
      }

      return app_node;
    }