static void Main(string[] args)
{
Socket mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp);
Console.Write("tracert ");
string name = Console.ReadLine();
try
{
IPHostEntry ipHostEntry = Dns.GetHostEntry(name);
//IP address and port number
IPEndPoint ipEndPoint = new IPEndPoint(ipHostEntry.AddressList[0], 0);
//To see in WireShark
string myPacketsLabel;
myPacketsLabel = "MY_LAB";
ICMPPack packet = new ICMPPack(TYPE_ECHO_REQUEST, Encoding.ASCII.GetBytes(myPacketsLabel));
Traceroute(mySocket, packet, ipEndPoint);
}
catch (SocketException)
{
Console.WriteLine("Не удается разрешить системное имя узла {0}.", name);
}
mySocket.Close();
}
static void Traceroute(Socket socket, ICMPPack packet, IPEndPoint destIPEndPoint)
{
int timeStart, timeEnd, responseSize, errorCount = 0;
byte[] responseMessage;
EndPoint endPoint = destIPEndPoint;
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 3000);
//Send packets
Console.WriteLine("Трассировка маршрута к {0} с максимальным числом прыжков 30:", destIPEndPoint);
for (int i = 1; i <= 30; i++)
{
Console.Write("{0}\t", i);
for (int j = 0; j < 3; j++)
{
socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.IpTimeToLive, i);
timeStart = Environment.TickCount;
socket.SendTo(packet.getBytes(), packet.PackSize, SocketFlags.None, destIPEndPoint);
try
{
responseMessage = new byte[MESSAGE_MAX_SIZE];
responseSize = socket.ReceiveFrom(responseMessage, ref endPoint);
timeEnd = Environment.TickCount;
ICMPPack response = new ICMPPack(responseMessage, responseSize);
if ((response.Type == 0) || (response.Type == 11))
{
Console.Write("{0} мс\t", timeEnd - timeStart);
if (j == 2)
{
Console.WriteLine("{0}", endPoint.ToString());
}
}
if ((response.Type == 0) && (j == 2))
{
Console.WriteLine("Трассировка завершена.");
return;
}
errorCount = 0;
}
catch (SocketException)
{
Console.Write("*\t");
errorCount++;
if (errorCount % 3 == 0 && errorCount != 0)
{
Console.Write("Превышен интервал ожидания для запроса.");
}
if (j == 2)
{
Console.WriteLine();
}
if (errorCount == 30)
{
Console.WriteLine("Хост недоступен");
return;
}
}
}
}
}
