private void UpdateUI(TracertEntry r)
{
if (this.InvokeRequired)
{
this.Invoke(new Action <TracertEntry>(UpdateUI), r);
}
else
{
listBox1.Items.Add(r.ToString());
}
}
private async void TraceRoute(int hopLimit, string hostNameOrIp, CancellationToken ct)
{
if (ct.IsCancellationRequested == true)
{
return;
//ct.ThrowIfCancellationRequested();
}
for (int hopIndex = 0; hopIndex < hopLimit; hopIndex++)
{
int ttl = hopIndex + 1;
int timeout = 200;
// string data = Guid.NewGuid().ToString();
byte[] dataBytes = new byte[] { 0 };//Encoding.ASCII.GetBytes(data);
Ping ping = new Ping();
string ip = " ", local = " ", hostname = " ", reply_time = " ";
IPStatus status = IPStatus.Unknown;
Stopwatch pingReplyTime = new Stopwatch();
List <string> times = new List <string>();
List <IPAddress> ips = new List <IPAddress>();
for (int i = 0; i < 3; i++)
{
pingReplyTime.Start();
PingReply pingReply = await ping.SendPingAsync(hostNameOrIp, timeout, dataBytes, new PingOptions(ttl, true));
times.Add(pingReplyTime.ElapsedMilliseconds.ToString());
pingReplyTime.Reset();
ips.Add(pingReply.Address);
status = pingReply.Status;
// reply_time = pingReplyTime.ElapsedMilliseconds.ToString() + "ms";
}
var ipa = ips.FirstOrDefault(t => t != null);
reply_time = string.Join(" / ", times);// + " ms";
if (reply_time.Length < 12)
{
reply_time = " " + reply_time;
}
if (ipa != null)
{
ip = ipa.ToString();
if (ip == "0.0.0.0")
{
ip = "*";
local = "";
hostname = "";
}
else
{
string t = IPSearch3Fast.Instance.Find(ip);
string[] r = t.Split('|');
string pcd = "";
if (r.Length > 3)
{
pcd = r[1] + r[2] + r[3] + r[4] + (r[5] == "" ? "" : "(" + r[5] + ")");
}
local = pcd;
if (r[5] != "保留")
{
hostname = GetReverseDNS(ip, r[1] == "中国" ? 60 : 200);
}
}
}
var entity = new TracertEntry()
{
HopIndex = hopIndex + 1,
Ip = ip,
Hostname = hostname,
Local = local,
ReplyTime = reply_time,
ReplyStatus = status
};
UpdateUI(entity);
if (status == IPStatus.Success)
{
break;
}
if (ct.IsCancellationRequested)
{
break;
}
}
}