private void UpdateRoutes(byte[] response, int bytesReceived)
{
var neighbor = new RouteEntry()
{
Ip = ConvertFromBytesToInteger(response, 8),
Gateway = ConvertFromIpAddressToInteger(OwnIP),
Cost = 0
};
var routes = new List <RouteEntry>();
routes.Add(neighbor);
if (bytesReceived > 24)
{
for (int index = 24; index < bytesReceived; index += 20)
{
var entry = new RouteEntry()
{
Ip = ConvertFromBytesToInteger(response, index + 4),
Gateway = neighbor.Ip,
Cost = ConvertFromBytesToInteger(response, index + 16) + 1
};
//dont add yourself to route list
if (ConvertFromIntegerToIpAddress(entry.Ip).Equals(OwnIP))
{
continue;
}
//dont add routes with hop count higher than 15
if (entry.Cost > MaxHopCount)
{
continue;
}
routes.Add(entry);
}
}
RouteTable.mutex.WaitOne();
foreach (var entry in routes)
{
if (RouteTable.Contains(entry))
{
int index = RouteTable.IndexOf(entry);
var oldEntry = RouteTable[index];
if (oldEntry.Cost >= entry.Cost)
{
RouteTable[index] = entry;
}
}
else
{
RouteTable.Add(entry);
}
}
RouteTable.mutex.ReleaseMutex();
}