Brunet.Symphony.StructuredShortcutConnectionOverlord.CheckConnectionOptimality C# (CSharp) Метод

    protected void CheckConnectionOptimality(object node, EventArgs eargs) {
      DateTime now = DateTime.UtcNow;
      lock(_sync) {
        if ((now - _last_optimize_time).TotalSeconds < OPTIMIZE_DELAY) {
          return;
        }
        _last_optimize_time = now;
      }

#if TRACE
      if (ProtocolLog.SCO.Enabled) {
        ProtocolLog.Write(ProtocolLog.SCO, 
                          String.Format("SCO local: {0}, Selcting a random shortcut to optimize.", 
                                        _node.Address));
      }
#endif
      double logk = Math.Log( (double)_node.NetworkSize, 2.0 );  
      
      //Get a random shortcut:
      ArrayList shortcuts = new ArrayList();
      foreach(Connection sc in _node.ConnectionTable.GetConnections(STRUC_SHORT) ) {
        /** 
         * Only if we initiated it, we check if the connection is optimal.
         * First half of the token is initiator address, while the other half 
         * is the start of the range.
         */
        string token = sc.State.PeerLinkMessage.Token;
        if (token == null || token == String.Empty) {
          continue;
        }

        string initiator_addr = token.Substring(0, token.Length/2);
        if (initiator_addr == _node.Address.ToString()) {
          shortcuts.Add(sc);
        }
      }
        

      if (shortcuts.Count > 0) {
        // Pick a random shortcut and check for optimality.
        Connection sc = (Connection)shortcuts[ _rand.Next(shortcuts.Count) ];
        string token = sc.State.PeerLinkMessage.Token;
        // Second half of the token is the random target for the shortcut.
        Address random_target = AddressParser.Parse(token.Substring(token.Length/2));
#if TRACE
        if (ProtocolLog.SCO.Enabled) {
          ProtocolLog.Write(ProtocolLog.SCO, 
                            String.Format("SCO local: {0}, Optimizing shortcut connection: {1}, random_target: {2}.",
                                          _node.Address, sc.Address, random_target));
        }
#endif

        _target_selector.ComputeCandidates(random_target, (int) Math.Ceiling(logk), 
                                           CheckShortcutCallback, sc.Address);
      } else {
#if TRACE
        if (ProtocolLog.SCO.Enabled) {
          ProtocolLog.Write(ProtocolLog.SCO,
                            String.Format("SCO local: {0}, Cannot find a shortcut to optimize.", 
                                          _node.Address));
        }
#endif
      }

      //also optimize the bypass connections.
#if TRACE
      if (ProtocolLog.SCO.Enabled) {
        ProtocolLog.Write(ProtocolLog.SCO, 
                          String.Format("SCO local: {0}, Selecting a bypass to optimize.", 
                                        _node.Address));
      }
#endif
      _target_selector.ComputeCandidates(_node.Address, (int) Math.Ceiling(logk), CheckBypassCallback, null);
    }