C# SharpPcap issues

Question

I've been very interested in using SharpPcap, but so far it's not been going well.

The main problem is the following code:

   private static void device_OnPacketArrival(object sender, CaptureEventArgs packet)
   {
        if(packet is TCPPacket)
        {                
            DateTime time = packet.Timeval.Date;
            int len = packet.PcapHeader.len;

            TCPPacket tcp = (TCPPacket)packet;
            string srcIp = tcp.SourceAddress;
            string dstIp = tcp.DestinationAddress;
            int srcPort = tcp.SourcePort;
            int dstPort = tcp.DestinationPort;

            Console.WriteLine("{0}:{1}:{2},
                {3} Len={4} {5}:{6} -> {7}:{8}", 
                time.Hour, time.Minute, time.Second, 
                time.Millisecond, len, srcIp, srcPort, 
                dstIp, dstPort);
        }
    }

"The type or namespace TCPPacket could not be found"

OK, so I figured it must be TcpPacket? -but then it came up with this error:

"The given expression is never of the provided ('PacketDotNet.TcpPacket') type"

Ignoring that:

"'SharpPcap.CaptureEventArgs' does not contain a definition for 'Timeval' and no extension method 'Timeval' accepting a first argument of type 'SharpPcap.CaptureEventArgs' could be found"

And so on, and so on. So my question is, am I missing something?

I have the PacketDotNet and SharpPcap library's, and added both the using statements.

Solution: Packet pack = Packet.ParsePacket(packet.Packet); TcpPacket tcpPacket = TcpPacket.GetEncapsulated(pack);

    DateTime time = packet.Packet.Timeval.Date;
    int len = packet.Packet.Data.Length;

    if (tcpPacket != null)
    {
        IpPacket ipPacket = (IpPacket)tcpPacket.ParentPacket;


            IPAddress srcIp = ipPacket.SourceAddress;
            IPAddress dstIp = ipPacket.DestinationAddress;
            ushort srcPort = tcpPacket.SourcePort;
            ushort dstPort = tcpPacket.DestinationPort;

            MessageBox.Show(String.Format("{0}:{1}:{2},{3} Len={4} {5}:{6} -> {7}:{8}",
                                time.Hour, time.Minute, time.Second, time.Millisecond, len,
                                srcIp, srcPort, dstIp, dstPort)
                );
    }

Answer 1

Solution:

Packet pack = Packet.ParsePacket(packet.Packet);
TcpPacket tcpPacket = TcpPacket.GetEncapsulated(pack);

DateTime time = packet.Packet.Timeval.Date;
int len = packet.Packet.Data.Length;

if (tcpPacket != null)
{
    IpPacket ipPacket = (IpPacket)tcpPacket.ParentPacket;


        IPAddress srcIp = ipPacket.SourceAddress;
        IPAddress dstIp = ipPacket.DestinationAddress;
        ushort srcPort = tcpPacket.SourcePort;
        ushort dstPort = tcpPacket.DestinationPort;

        MessageBox.Show(String.Format("{0}:{1}:{2},{3} Len={4} {5}:{6} -> {7}:{8}",
                            time.Hour, time.Minute, time.Second, time.Millisecond, len,
                            srcIp, srcPort, dstIp, dstPort)
            );
}