private PCAP_NEXT_EX_STATE ReadNextInternal(out PcapHeader p, out System.Byte[] packet_data, out IntPtr pkthdr, out IntPtr pktdata)
{
pcap_pkthdr pcap_pkthdr;
pkthdr = IntPtr.Zero;
pktdata = IntPtr.Zero;
p = null;
packet_data = null;
#if MONO
return(PCAP_NEXT_EX_STATE.ERROR);
#else
if (pcap_t.ToInt32() == 0)
{
errbuf = new StringBuilder("No adapter is currently open");
return(PCAP_NEXT_EX_STATE.ERROR);
}
int i = pcap_next_ex(pcap_t, ref pkthdr, ref pktdata);
if (i == 1)
{
pcap_pkthdr = ((pcap_pkthdr)(Marshal.PtrToStructure(pkthdr, typeof(pcap_pkthdr))));
p = new PcapHeader();
p.CaptureLength = pcap_pkthdr.caplen;
p.PacketLength = pcap_pkthdr.len;
p.Timeval = pcap_pkthdr.ts;
packet_data = new Byte[((System.UInt32)(p.PacketLength))];
Marshal.Copy(pktdata, packet_data, 0, p.PacketLength);
return(PCAP_NEXT_EX_STATE.SUCCESS);
}
else if (i == 0)
{
return(PCAP_NEXT_EX_STATE.TIMEOUT);
}
else if (i == -1)
{
return(PCAP_NEXT_EX_STATE.ERROR);
}
else if (i == -2)
{
return(PCAP_NEXT_EX_STATE.EOF);
}
else
{
return(PCAP_NEXT_EX_STATE.UNKNOWN);
}
#endif
}
public virtual PCAP_NEXT_EX_STATE ReadNextInternal(out PcapHeader p, out System.Byte[] packet_data)
{
IntPtr i;
return(ReadNextInternal(out p, out packet_data, out i, out i));
}
