/// <summary>
/// Open the device
/// </summary>
public override void Open(DeviceConfiguration configuration)
{
// set the device handle
var has_open_dead_with_tstamp_precision_support = Pcap.LibpcapVersion >= new Version(1, 5, 1);
var resolution = configuration.TimestampResolution ?? TimestampResolution.Microsecond;
if (has_open_dead_with_tstamp_precision_support)
{
PcapHandle = LibPcapSafeNativeMethods.pcap_open_dead_with_tstamp_precision((int)configuration.LinkLayerType,
configuration.Snaplen,
(uint)resolution);
}
else
{
if (resolution != TimestampResolution.Microsecond)
{
configuration.RaiseConfigurationFailed(
nameof(configuration.TimestampResolution),
(int)PcapError.PlatformNotSupported,
"pcap version is < 1.5.1, needs pcap_open_dead_with_tstamp_precision()"
);
}
PcapHandle = LibPcapSafeNativeMethods.pcap_open_dead((int)configuration.LinkLayerType, configuration.Snaplen);
}
m_pcapDumpHandle = LibPcapSafeNativeMethods.pcap_dump_open(PcapHandle, m_pcapFile);
if (m_pcapDumpHandle == IntPtr.Zero)
{
throw new PcapException("Error opening dump file '" + LastError + "'");
}
Active = true;
}
