C# TraceRoute实现

public static void GetTraceRoute(string hostname)
{
    // following are similar to the defaults in the "traceroute" unix command.
    const int timeout = 5000;
    const int maxTTL = 64;
    const int bufferSize = 32;
    byte[] buffer = new byte[bufferSize];
    new Random().NextBytes(buffer);
    using (var pinger = new Ping())
    {
        for (int ttl = 1; ttl <= maxTTL; ttl++)
        {
            PingOptions options = new PingOptions(ttl, true);
            PingReply reply = pinger.Send(hostname, timeout, buffer, options);

            // we've found a route at this ttl
            if (reply.Status == IPStatus.Success || reply.Status == IPStatus.TtlExpired)
            {
                Console.WriteLine(reply.Address);
            }
            // if we reach a status other than expired or timed out, we're done searching or there has been an error
            if (reply.Status != IPStatus.TtlExpired && reply.Status != IPStatus.TimedOut)
                break;
        }
    }
}