public void Ping(Common.IPv4Address ip, PingSettings settings, PingResultHandler callback)
{
for (int i = 0; i < (int)Math.Max(settings.Repeat, 1); i++)
{
try
{
SendIcmpRequestPacket(ip, settings.Ttl, settings.Bytes, 456, settings.Timeout, callback);
}
catch (ARP.IpResolutionFailed arp)
{
callback(new PingResult(PingResultType.DestinationHostUnreachable)
{
RespondingHost = _client.Configuration.IpAddress
});
}
System.Threading.Thread.Sleep(settings.Delay);
}
}
private void SendIcmpRequestPacket(Common.IPv4Address ip, byte ttl, ushort bytes, int seqNum, int timeout, PingResultHandler callback)
{
OSI.Layer3Packet packet = new OSI.Layer3Packet();
packet.Destination = ip.AsString;
packet.SourceIP = _client.Configuration.IpAddress;
packet.Ttl = ttl;
var data = new byte[bytes];
_random.NextBytes(data);
var shor = new byte[2];
_random.NextBytes(shor);
ushort id = BitConverter.ToUInt16(shor, 0);
// Save ping
if (CurrentPings.ContainsKey(id))
{
CurrentPings[id] = new PingRequest(callback);
}
else
{
PingRequest req = new PingRequest(callback);
req.Bytes = bytes;
CurrentPings.Add(id, req);
}
PcapDotNet.Packets.Icmp.IcmpEchoLayer icmpLayer =
new PcapDotNet.Packets.Icmp.IcmpEchoLayer
{
Checksum = null,
Identifier = id,
SequenceNumber = (ushort)(seqNum),
};
PcapDotNet.Packets.PayloadLayer extra = new PcapDotNet.Packets.PayloadLayer()
{
Data = new PcapDotNet.Packets.Datagram(data)
};
packet.NextLayers.Add(icmpLayer);
packet.NextLayers.Add(extra);
SendPacket(packet, () =>
{
CurrentPings[id].TimeStamp = DateTime.Now;
});
DateTime now = DateTime.Now;
while ((DateTime.Now - now).TotalMilliseconds < timeout)
{
if (CurrentPings[id].ReplyReceived)
{
break;
}
System.Threading.Thread.Sleep(100);
}
if (!CurrentPings[id].ReplyReceived)
{
CurrentPings[id].Callback(new PingResult(PingResultType.RequestTimedOut));
}
CurrentPings.Remove(id);
}
public void Ping(string host, PingSettings settings, PingResultHandler callback)
{
Common.IPv4Address ip = _client.Dns.ResolveHost(host).IPs[0];
Ping(ip, settings, callback);
}
public void Ping(Common.IPv4Address ip, PingResultHandler callback)
{
SendIcmpRequestPacket(ip, 225, 32, 123, 3, callback);
}
