public void addRoute(int d, int c, int nH)
{
RT tmpRT = new RT(d, c, nH);
routingTable.Add(d, tmpRT);
}
public void processEvent(ref PriorityQueue queue)
{
Event tmpEvent = (Event)queue.Dequeue();
bool changed = false;
if ((tmpEvent.eventType == 1) || (tmpEvent.eventType == 2))
{
int newCost = 0;
RT tmpRT = new RT();
foreach (KeyValuePair<int, DV> tmpDV in tmpEvent.packet.getDV())
{
if (tmpDV.Value.cost == -1)
{
routingTable.Remove(tmpDV.Value.destination);
if(neighborTable.ContainsKey(tmpDV.Value.destination))
{
tmpRT.destination = tmpDV.Value.destination;
tmpRT.cost = neighborTable[tmpDV.Value.destination].cost;
tmpRT.nextHop = tmpDV.Value.destination;
routingTable.Add(tmpDV.Value.destination, tmpRT);
changed = true;
}
}
else
{
newCost = tmpDV.Value.cost + neighborTable[tmpEvent.sourceIP].cost;
tmpRT.destination = tmpDV.Value.destination;
tmpRT.cost = newCost;
tmpRT.nextHop = tmpEvent.sourceIP;
if (!routingTable.ContainsKey(tmpDV.Value.destination))
{
routingTable.Add(tmpDV.Value.destination, tmpRT);
changed = true;
}
else
{
if ((routingTable[tmpDV.Value.destination].cost > newCost)||(routingTable[tmpDV.Value.destination].cost == -1))
{
routingTable.Remove(tmpDV.Value.destination);
routingTable.Add(tmpDV.Value.destination, tmpRT);
changed = true;
}
}
}
}
}
if (tmpEvent.eventType == 3)
{
RT tmpRT = new RT( tmpEvent.sourceIP, -1, routingTable[tmpEvent.sourceIP].nextHop);
routingTable.Remove(tmpEvent.sourceIP);
routingTable.Add(tmpEvent.sourceIP, tmpRT);
changed = true;
}
if (tmpEvent.eventType == 4)
{
if (address == tmpEvent.dataPacketDestination)
{
Console.WriteLine("Packet received from " + tmpEvent.sourceIP + " at " + tmpEvent.time);
}
else
{
foreach (KeyValuePair<int, RT> tmpRT in routingTable)
{
//Console.WriteLine("Event type 4");
//Console.WriteLine("RT destination: " + tmpRT.Value.destination);
//Console.WriteLine("Data Packet dest: " + tmpEvent.dataPacketDestination);
if (tmpRT.Value.destination == tmpEvent.dataPacketDestination)
{
addEvent(ref queue, 4, tmpRT.Value.nextHop, tmpEvent.time + neighborTable[tmpRT.Value.nextHop].delay, tmpEvent.dataPacketDestination);
Console.WriteLine("Sending data packet to " + tmpRT.Value.nextHop + " from " + address + " at time " + tmpEvent.time);
}
}
}
}
if (changed)
{
foreach (KeyValuePair<int, NT> tmpNT in neighborTable)
{
addEvent(ref queue, 2, tmpNT.Value.destination, tmpEvent.time + tmpNT.Value.delay);
}
}
}