public async Task CapturePacketsAsync(string deviceName)
{
Task task = Task.Run(() =>
{
dev = SharpPcap.CaptureDeviceList.Instance[2];
// Instance[2] for wifi
// Instance[5] for LAN
int readTimeoutMilliseconds = 1000;
dev.OnPacketArrival +=
new PacketArrivalEventHandler(dev_OnPacketArrival);
if (dev is AirPcapDevice)
{
// NOTE: AirPcap devices cannot disable local capture
var airPcap = dev as AirPcapDevice;
airPcap.Open(SharpPcap.WinPcap.OpenFlags.DataTransferUdp, readTimeoutMilliseconds);
}
else if (dev is WinPcapDevice)
{
var winPcap = dev as WinPcapDevice;
winPcap.Open(SharpPcap.WinPcap.OpenFlags.DataTransferUdp | SharpPcap.WinPcap.OpenFlags.NoCaptureLocal, readTimeoutMilliseconds);
}
else if (dev is LibPcapLiveDevice)
{
var livePcapDevice = dev as LibPcapLiveDevice;
livePcapDevice.Open(DeviceMode.Promiscuous, readTimeoutMilliseconds);
}
dev.Capture();
});
await task;
}
public static DCP.IpInfo GetPcapIp(SharpPcap.ICaptureDevice pcapDevice)
{
foreach (System.Net.NetworkInformation.NetworkInterface nic in System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces())
{
PhysicalAddress mac = null;
try
{
mac = nic.GetPhysicalAddress();
}
catch (Exception)
{
//interface have no mac address
}
if (mac != null && mac.Equals(pcapDevice.MacAddress))
{
IPInterfaceProperties ipp = nic.GetIPProperties();
foreach (var entry in ipp.UnicastAddresses)
{
if (entry.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
byte[] gw = new byte[] { 0, 0, 0, 0 };
if (ipp.GatewayAddresses.Count > 0)
{
gw = ipp.GatewayAddresses[0].Address.GetAddressBytes();
}
return(new DCP.IpInfo(DCP.BlockInfo.IpSet, entry.Address.GetAddressBytes(), entry.IPv4Mask.GetAddressBytes(), gw));
}
}
}
}
return(null);
}
/// <summary>
/// Creates a HardwareDevice object based on its SharpPcap representation.
/// </summary>
/// <param name="dev"></param>
public HardwareDevice(ICaptureDevice dev)
{
this.Device = dev;
string input = dev.ToString();
IpAddresses = new List <String>();
List <String> detectedAddrs = new List <String>();
IPAddress[] localIps = Dns.GetHostAddresses(Dns.GetHostName());
foreach (IPAddress ip in localIps)
{
string addr = ip.ToString();
// scrub out the %xxx at the end (if present)
int percentSignPos = addr.IndexOf("%");
if (percentSignPos > 0)
{
addr = addr.Substring(0, percentSignPos);
}
detectedAddrs.Add(addr);
}
// break everything up so we can parse line-by-line
string[] deviceFields = input.Split(new string[] { "\n" }, StringSplitOptions.RemoveEmptyEntries);
foreach (string line in deviceFields)
{
if (line.StartsWith("FriendlyName"))
{
FriendlyName = line.Replace("FriendlyName: ", "");
}
else if (line.StartsWith("Description"))
{
Description = line.Replace("Description: ", "");
}
/* IP or MAC address
* Only add if the IP address here exists in the detected list
* (that is, the list returned by Dns.GetHostAddresses() )
*/
else if (line.StartsWith("Addr:"))
{
string detectedIp = line.Replace("Addr: ", "");
// MAC address
if (detectedIp.Contains("HW addr: "))
{
MacAddress = detectedIp.Replace("HW addr: ", "");
}
// IP address
if (detectedAddrs.Contains(detectedIp))
{
IpAddresses.Add(detectedIp);
}
}
}
}