private async Task RunTraceRoute()
{
var result = new List <TraceReply>();
string data = Pinger.RandomString(host.PacketSize);
Logger.Debug($"Data string: {data}");
byte[] buffer = Encoding.ASCII.GetBytes(data);
using var ping = new Ping();
for (int ttl = 1; ttl <= 128; ttl++)
{
var pingOpts = new PingOptions(ttl, true);
var reply = await ping.SendPingAsync(host.HostName, host.Timeout, buffer, pingOpts);
if (reply.Status == IPStatus.Success || reply.Status == IPStatus.TtlExpired)
{
var newID = Guid.NewGuid();
TraceReplies.Add(new TraceReply
{
ID = newID,
IPAddress = reply.Address.ToString(),
PingTimes = new string[3],
Ttl = ttl,
HostName = "Looking up host...",
IPAddButtonVisible = Visibility.Hidden,
HostAddButtonVisible = Visibility.Hidden
});
traceView.ScrollIntoView(TraceReplies.Last());
HostNameLookupTasks.Add(Task.Run(() =>
{
Dns.GetHostEntryAsync(reply.Address).ContinueWith(hostEntryTask =>
{
Logger.Debug($"Starting lookup for address {reply.Address} with ID {newID}");
try
{
TraceReplies.First(t => t.ID == newID).HostName = hostEntryTask.Result.HostName;
}
catch (Exception ex)
{
Logger.Debug($"Unable to find host entry for IP {reply.Address}");
Logger.Log.Debug(ex, $"Exception data for {reply.Address} with Ttl {ttl} and ID of {newID}");
TraceReplies.First(t => t.ID == newID).HostName = "N/A";
}
Interlocked.Increment(ref hostsLookedUp);
Logger.Debug($"hostsLookedUp: {hostsLookedUp}");
syncCtx.Post(new SendOrPostCallback(o =>
{
traceView.Items.Refresh();
}), null);
}, cancelToken.Token);
}, cancelToken.Token));
var firstTry = await pinger.GetSingleRoundTrip(reply.Address, ttl + 1);
TraceReplies.First(t => t.ID == newID).PingTimes[0] = firstTry.Status != IPStatus.Success ? firstTry.Status.ToString() : firstTry.RoundTrip.ToString() + "ms";
traceView.Items.Refresh();
if (firstTry.Item2 == IPStatus.Success)
{
await Task.Delay(250, cancelToken.Token);
}
var secondTry = await pinger.GetSingleRoundTrip(reply.Address, ttl + 1);
TraceReplies.First(t => t.ID == newID).PingTimes[1] = secondTry.Status != IPStatus.Success ? secondTry.Status.ToString() : secondTry.RoundTrip.ToString() + "ms";
traceView.Items.Refresh();
if (secondTry.Item2 == IPStatus.Success)
{
await Task.Delay(250, cancelToken.Token);
}
var thirdTry = await pinger.GetSingleRoundTrip(reply.Address, ttl + 1);
TraceReplies.First(t => t.ID == newID).PingTimes[2] = thirdTry.Status != IPStatus.Success ? thirdTry.Status.ToString() : thirdTry.RoundTrip.ToString() + "ms";
traceView.Items.Refresh();
if (thirdTry.Item2 == IPStatus.Success)
{
await Task.Delay(250, cancelToken.Token);
}
}
if (reply.Status != IPStatus.TtlExpired && reply.Status != IPStatus.TimedOut)
{
break;
}
}
}
