public void Run()
{
HashSet<Node> network = NetworkGraph.GetNetworkGraph();
int currentIteration = 0;
table = new RoutingTable(this, network);
while( true )
{
try
{
if(IsOk())
{
table.PrintTable(currentIteration);
Broadcast(table);
}
else
{
Console.WriteLine(ipAddress + " has failed!");
break;
}
if( Program.enableNodeFailure )
{
RandomFail();
}
Thread.Sleep(1000);
currentIteration++;
} catch ( NullReferenceException e) {}
}
}
private void Broadcast( RoutingTable t )
{
HashSet<Edge> edges = GetEdges();
foreach( Edge e in edges )
{
Node x = e.GetX();
Node y = e.GetY();
Node neighbor;
if (x.GetAddress().Equals(ipAddress))
neighbor = y;
else
neighbor = x;
neighbor.Receive(this, t);
t.IncrementTimer(neighbor.GetAddress());
}
}
private void Receive( Node neighbor, RoutingTable neighborTable )
{
try
{
String neighborAddress = neighbor.GetAddress();
List<String> neighborDestinations = neighborTable.GetDestinations();
List<String> myDestinations = table.GetDestinations();
// Compare the neighbor's routing table with your own... Update better routes
foreach (String nDest in neighborDestinations)
{
foreach (String myDest in myDestinations)
{
if (myDest.Equals(nDest))
{
int myMetric = table.GetDistanceMetric(myDest);
int nMetric = neighborTable.GetDistanceMetric(nDest);
if (nMetric < myMetric)
{
int newMetric;
int curNodeToNeighborDistance = table.GetDistanceMetric(nDest);
if (curNodeToNeighborDistance == (int)Int32.MaxValue)
newMetric = nMetric;
else
newMetric = nMetric + curNodeToNeighborDistance;
table.UpdateMetric(myDest, newMetric);
table.UpdateNextHop(myDest, table.GetDestination(neighborAddress));
table.ResetTimer(myDest);
table.ResetTimer(nDest);
}
}
}
}
table.ResetTimer(neighborAddress);
}
catch (NullReferenceException e) { }
}
