internal static extern int pcap_next_ex(PcapHandle p, ref pcap_pkthdr header, ref IntPtr dataPtr);
private Packet ReadPacketWithoutBusyCheck()
{
ThrowIfDisposed();
while (true)
{
var header = new pcap_pkthdr();
var dataPtr = IntPtr.Zero;
int result = NativeMethods.pcap_next_ex(handle, ref header, ref dataPtr);
// throw on error
if (result == ReturnValue.Error)
handle.ThrowLastError();
// check for EOF
if (result == ReturnValue.EOF)
return null;
// try again on timeout
if (result == 0)
continue;
var buffer = new byte[header.DataLength];
Marshal.Copy(dataPtr, buffer, 0, header.DataLength);
return new Packet {
Data = buffer,
NativeTimestamp = header.Timestamp,
LinkLayerType = linkLayerType,
};
}
}
internal static extern void pcap_dump(PcapDumperHandle p, pcap_pkthdr header, byte[] data);
