public static void Main(string[] argv)
{
byte[] data = new byte[1024];
int recv;
Socket host = new Socket(AddressFamily.InterNetwork, SocketType.Raw,
ProtocolType.Icmp);
IPEndPoint iep = new IPEndPoint(IPAddress.Parse(argv[0]), 0);
EndPoint ep = (EndPoint)iep;
ICMP packet = new ICMP();
packet.Type = 0x08;
packet.Code = 0x00;
packet.Checksum = 0;
Buffer.BlockCopy(BitConverter.GetBytes((short)1), 0, packet.Message, 0, 2);
Buffer.BlockCopy(BitConverter.GetBytes((short)1), 0, packet.Message, 2, 2);
data = Encoding.ASCII.GetBytes("test packet");
Buffer.BlockCopy(data, 0, packet.Message, 4, data.Length);
packet.MessageSize = data.Length + 4;
int packetsize = packet.MessageSize + 4;
UInt16 chcksum = packet.getChecksum();
packet.Checksum = chcksum;
host.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 3000);
host.SendTo(packet.getBytes(), packetsize, SocketFlags.None, iep);
try
{
data = new byte[1024];
recv = host.ReceiveFrom(data, ref ep);
}
catch (SocketException)
{
Console.WriteLine("No response from remote host");
return;
}
ICMP response = new ICMP(data, recv);
Console.WriteLine("response from: {0}", ep.ToString());
Console.WriteLine(" Type {0}", response.Type);
Console.WriteLine(" Code: {0}", response.Code);
int Identifier = BitConverter.ToInt16(response.Message, 0);
int Sequence = BitConverter.ToInt16(response.Message, 2);
Console.WriteLine(" Identifier: {0}", Identifier);
Console.WriteLine(" Sequence: {0}", Sequence);
string stringData = Encoding.ASCII.GetString(response.Message, 4, response.MessageSize - 4);
Console.WriteLine(" data: {0}", stringData);
host.Close();
}
public static void Main()
{
byte[] data = new byte[1024];
int recv;
Socket host = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp);
IPEndPoint iep = new IPEndPoint(IPAddress.Broadcast, 0);
EndPoint ep = (EndPoint)iep;
ICMP packet = new ICMP();
packet.Type = 0x11;
packet.Code = 0x00;
packet.Checksum = 0;
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 0, 2);
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 2, 2);
Buffer.BlockCopy(BitConverter.GetBytes(0), 0, packet.Message, 4, 4);
packet.MessageSize = 8;
int packetsize = packet.MessageSize + 4;
UInt16 chksm = packet.getChecksum();
packet.Checksum = chksm;
host.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 3000);
host.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
host.SendTo(packet.getBytes(), packetsize, SocketFlags.None, iep);
try
{
data = new byte[1024];
recv = host.ReceiveFrom(data, ref ep);
}
catch (SocketException)
{
Console.WriteLine("Unable to determine subnet mask for this subnet");
return;
}
ICMP response = new ICMP(data, recv);
Console.WriteLine("Received ICMP Type {0} packet", response.Type);
long answer = BitConverter.ToUInt32(response.Message, 4);
IPAddress netmask = new IPAddress(answer);
Console.WriteLine("The subnet mask for this subnet is: {0}", netmask.ToString());
}
void sendPing()
{
IPHostEntry iphe = Dns.Resolve(hostbox.Text);
IPEndPoint iep = new IPEndPoint(iphe.AddressList[0], 0);
EndPoint ep = (EndPoint)iep;
ICMP packet = new ICMP();
int recv, i = 1;
packet.Type = 0x08;
packet.Code = 0x00;
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 0, 2);
byte[] data = Encoding.ASCII.GetBytes(databox.Text);
Buffer.BlockCopy(data, 0, packet.Message, 4, data.Length);
packet.MessageSize = data.Length + 4;
int packetsize = packet.MessageSize + 4;
results.Items.Add("Pinging " + hostbox.Text);
while (true)
{
packet.Checksum = 0;
Buffer.BlockCopy(BitConverter.GetBytes(i), 0, packet.Message, 2, 2);
UInt16 chcksum = packet.getChecksum();
packet.Checksum = chcksum;
pingstart = Environment.TickCount;
sock.SendTo(packet.getBytes(), packetsize, SocketFlags.None, iep);
try
{
data = new byte[1024];
recv = sock.ReceiveFrom(data, ref ep);
pingstop = Environment.TickCount;
elapsedtime = pingstop - pingstart;
results.Items.Add("reply from: " + ep.ToString() + ", seq: " + i +
", time = " + elapsedtime + "ms");
}
catch (SocketException)
{
results.Items.Add("no reply from host");
}
i++;
Thread.Sleep(3000);
}
}
public static void Main(string[] argv)
{
byte[] data = new byte[1024];
int recv, timestart, timestop;
Socket host = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp);
IPHostEntry iphe = Dns.Resolve(argv[0]);
IPEndPoint iep = new IPEndPoint(iphe.AddressList[0], 0);
EndPoint ep = (EndPoint)iep;
ICMP packet = new ICMP();
packet.Type = 0x08;
packet.Code = 0x00;
packet.Checksum = 0;
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 0, 2);
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 2, 2);
data = Encoding.ASCII.GetBytes("test packet");
Buffer.BlockCopy(data, 0, packet.Message, 4, data.Length);
packet.MessageSize = data.Length + 4;
int packetsize = packet.MessageSize + 4;
UInt16 chcksum = packet.getChecksum();
packet.Checksum = chcksum;
host.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 3000);
int badcount = 0;
for (int i = 1; i < 50; i++)
{
host.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.IpTimeToLive, i);
timestart = Environment.TickCount;
host.SendTo(packet.getBytes(), packetsize, SocketFlags.None, iep);
try
{
data = new byte[1024];
recv = host.ReceiveFrom(data, ref ep);
timestop = Environment.TickCount;
ICMP response = new ICMP(data, recv);
if (response.Type == 11)
{
Console.WriteLine("hop {0}: response from {1}, {2}ms", i, ep.ToString(), timestop - timestart);
}
if (response.Type == 0)
{
Console.WriteLine("{0} reached in {1} hops, {2}ms.", ep.ToString(), i, timestop - timestart);
break;
}
badcount = 0;
}
catch (SocketException)
{
Console.WriteLine("hop {0}: No response from remote host", i);
badcount++;
if (badcount == 5)
{
Console.WriteLine("Unable to contact remote host");
break;
}
}
}
host.Close();
}