private static HopObject PingWorker(HopObject hop)
{
Ping ping = new Ping();
int timeout = 500;
if (!hop.Host.Equals("???"))
{
PingReply reply = ping.Send(hop.Host, timeout);
double time = reply.RoundtripTime;
hop.Count += 1;
if (reply.Status == IPStatus.Success)
{
hop.Sum += time;
if (hop.Count == 1)
{
hop.Last = time;
hop.Best = time;
hop.Worst = time;
}
else
{
hop.Last = time;
if (time > hop.Worst)
{
hop.Worst = time;
}
else if (time < hop.Best)
{
hop.Best = time;
}
}
hop.SetAverage();
}
else
{
hop.Last = time;
hop.LostCount += 1;
hop.SetLoss();
}
}
ping.Dispose();
return(hop);
}
private static IEnumerable <HopObject> GetHostList(string destination, int ttl, int index)
{
List <HopObject> result = new List <HopObject>();
Ping ping = new Ping();
PingOptions option = new PingOptions(ttl, true);
byte[] buffer = new byte[1024];
int timeout = 1000;
PingReply reply = ping.Send(destination, timeout, buffer, option);
HopObject hop = new HopObject();
if (reply.Status == IPStatus.Success)
{
// Arrive destination.
hop.Host = reply.Address.ToString();
result.Add(hop);
Console.WriteLine("{0, -2} {1}", index, hop.ToString());
}
else if (reply.Status == IPStatus.TtlExpired || reply.Status == IPStatus.TimedOut)
{
if (reply.Status == IPStatus.TtlExpired)
{
// Arrive a hop.
hop.Host = reply.Address.ToString();
result.Add(hop);
Console.WriteLine("{0, -2} {1}", index, hop.ToString());
}
else
{
index -= 1;
}
// Go to next hop.
IEnumerable <HopObject> temp = GetHostList(destination, ttl + 1, index + 1);
result.AddRange(temp);
}
return(result);
}
