internal AirPcapDevice(WinPcap.WinPcapDevice dev) : base(dev.Interface)
{
}
/// <summary>
/// Sends all packets in a 'PcapSendQueue' out this pcap device
/// </summary>
/// <param name="q">
/// A <see cref="SendQueue"/>
/// </param>
/// <param name="transmitMode">
/// A <see cref="SendQueueTransmitModes"/>
/// </param>
/// <returns>
/// A <see cref="System.Int32"/>
/// </returns>
public int SendQueue( WinPcap.SendQueue q, SendQueueTransmitModes transmitMode )
{
return q.Transmit( this, transmitMode);
}
/// <summary>
/// Opens an Airpcap device with optional WinPcap.OpenFlags
/// </summary>
/// <param name="flags">
/// A <see cref="WinPcap.OpenFlags"/>
/// </param>
/// <param name="read_timeout">
/// A <see cref="System.Int32"/>
/// </param>
public override void Open(WinPcap.OpenFlags flags, int read_timeout)
{
base.Open(flags, read_timeout);
// reteieve the airpcap device given the winpcap handle
AirPcapDeviceHandle = WinPcap.SafeNativeMethods.pcap_get_airpcap_handle(PcapHandle);
}
/// <summary>
/// Gets a pcap stat object and calculate bps and pps
/// </summary>
private static void device_OnPcapStatistics(object sender, WinPcap.StatisticsModeEventArgs e)
{
// Calculate the delay in microseconds from the last sample.
// This value is obtained from the timestamp that's associated with the sample.
ulong delay = (e.Statistics.Timeval.Seconds - oldSec) * 1000000 - oldUsec + e.Statistics.Timeval.MicroSeconds;
// Get the number of Bits per second
ulong bps = ((ulong)e.Statistics.RecievedBytes * 8 * 1000000) / delay;
/* ^ ^
| |
| |
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converts bytes in bits -- |
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delay is expressed in microseconds --
*/
// Get the number of Packets per second
ulong pps = ((ulong)e.Statistics.RecievedPackets * 1000000) / delay;
// Convert the timestamp to readable format
var ts = e.Statistics.Timeval.Date.ToLongTimeString();
// Print Statistics
Console.WriteLine("{0}: bps={1}, pps={2}", ts, bps, pps);
//store current timestamp
oldSec = e.Statistics.Timeval.Seconds;
oldUsec = e.Statistics.Timeval.MicroSeconds;
}