public bool checkManualRoutingNodesReachability(int nodeA, int nodeB)
{
if (RoutingController.findAnyManualRoute(this.manual_routes, nodeA, nodeB) == null)
{
return(false);
}
else
{
//@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
}
return(true);
}
public void SimulationTick(int tick_no)
{
for (int n = 0; n < SimulationParams.lambda; n++)
{
if (SimulationParams.network_size < 2)
{
throw new IndexOutOfRangeException();
}
int from = -1;
int to = -1;
while (true)
{
from = random_gen_for_packet_generation.Next(1, nodes.Count);
to = random_gen_for_packet_generation.Next(1, nodes.Count);
if (from != to)
{
break;
}
}
if (SimulationParams.routing_algorithm == 3 || SimulationParams.routing_algorithm == 2)
{
int retries = 100;
List <int> route = new List <int>();
if (SimulationParams.routing_algorithm == 2)
{
route = findRandomRoute(from, to, 10);
}
else
{
route = RoutingController.findAnyManualRoute(manual_routes, from, to);
}
getNodeById(from).buffer_in.Enqueue(new Packet(from, to, route, SimulationParams.TTL));
getNodeById(from).stat_packets_gen++;
}
else
{
throw new NotImplementedException("not implemented");
}
}
foreach (NetworkNode n in nodes)
{
//handle 1 packet from in queue
if (n.buffer_in.Count > 0 && n.buffer_in.Peek().last_tick_id_which_transitioned != tick_no)
{
if (n.buffer_in.Peek().last_tick_id_which_transitioned > tick_no)
{
throw new Exception("invalid tick_no");
}
//packet was sent in one of previous ticks
Packet p = n.buffer_in.Dequeue().copy();
p.TTL--;
if (p.TTL <= 0)
{
n.stat_TTL_exceeded_packet_count++;
}
else
{
if (p.uuid == 4)
{
int visited = p.stat_nodes_visited;
List <int> through = p.node_through;
long uuid = p.uuid;
}
//TTL indicates that packet can be forwarded
if (p.node_to == n.id) //packet reaches destination
{
n.stat_packets_term++;
n.stat_reached_dest_TTL_sum += p.TTL;
n.stat_total_hops_count += p.node_visited_history.Count;
//n.stat_total_hops_count += p.stat_nodes_visited;
}
else //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!@#$
{
if (p.node_through.Count > 0 && p.node_through[0] == n.id)
{
p.node_through.RemoveAt(0);
if (p.uuid == 4)
{
}
p.stat_nodes_visited++;
n.stat_packets_trans++;
if (p.node_through.Count > 0)
{
if (getNodeById(p.node_through[0]).buffer_in.Count >= SimulationParams.buffer_size)
{
getNodeById(p.node_through[0]).stat_buffer_full_packet_count++;
}
else
{
forward_history[p.node_through[0]] += p.uuid + ", ";
p.node_visited_history.Add(n.id);
getNodeById(p.node_through[0]).buffer_in.Enqueue(p.getPacketCopyWithLastTickSet(tick_no));
}
}
else
{
//throw new Exception("this packet should have been terminated");
Console.WriteLine("this packet: " + p.uuid + " should have been terminated, count: " + (++invalid_termination));
}
}
else
{
throw new Exception("invalid node_through entry or structure");
}
}
}
}
else
{
//do nothing; as the packet was sent in this tick and
//because of that if could not have been received
//on the dest node already
}
}
}