public TraceRouteNodeFoundEventArgs(TraceRouteHopDetail detail)
: this()
{
Detail = detail;
}
/// <summary>
/// Executes the trace route.
/// </summary>
/// <param name="host">The destination host to which you wish to find the route.</param>
/// <returns>All of the hops between the current computers and the
/// <paramref name="host"/> computer.</returns>
/// <exception cref="ArgumentException"></exception>
public Task <IEnumerable <TraceRouteHopDetail> > ExecuteTraceRoute(String host)
{
if (String.IsNullOrWhiteSpace(host))
{
throw new ArgumentException("Argument \"host\" cannot be null or empty.", "host");
}
return(Task <IEnumerable <TraceRouteHopDetail> > .Factory.StartNew(() =>
{
List <TraceRouteHopDetail> output = new List <TraceRouteHopDetail>();
using (Ping ping = new Ping())
{
PingOptions options = new PingOptions(1, true);
Byte[] buffer = new Byte[32];
PingReply reply = ping.Send(host, 5000, buffer, options);
while (true)
{
if (CurrentCancellationTokenSource.IsCancellationRequested)
{
break;
}
if (reply.Address == null)
{
TraceRouteHopDetail detail = new TraceRouteHopDetail(options.Ttl, "*",
"***Request Timed Out***", new TimeSpan());
output.Add(detail);
if (TraceRouteNodeFound != null)
{
TraceRouteNodeFound(this, new TraceRouteNodeFoundEventArgs(detail));
}
}
else
{
String hostName = reply.Address.ToString();
try
{
hostName = Dns.GetHostEntry(reply.Address).HostName;
}
catch (SocketException)
{
}
TimeSpan responseTime = GetResponseTime(reply.Address.ToString());
// If we hit the last address or found the host, then stop.
if (reply.Address.Equals(lastReplyAddress) || reply.Address.ToString().Equals(host))
{
break;
}
TraceRouteHopDetail detail = new TraceRouteHopDetail(options.Ttl, reply.Address.ToString(),
hostName, responseTime);
output.Add(detail);
if (TraceRouteNodeFound != null)
{
TraceRouteNodeFound(this, new TraceRouteNodeFoundEventArgs(detail));
}
}
if (options.Ttl >= 30)
{
break;
}
lastReplyAddress = reply.Address;
options.Ttl += 1;
reply = ping.Send(host, 5000, buffer, options);
}
if (TraceRouteComplete != null)
{
TraceRouteComplete(this, new TraceRouteCompleteEventArgs(output));
}
return output;
}
}, CurrentCancellationTokenSource.Token));
}