private void ExtractUpperPacket(TcpPacket tcp)
{
TpktFileds tf = new TpktFileds();
string srcIp = tcp.ParentPacket <IPv4Packet>().SourceAddress.ToString();
tpktBuff = TpktPacketBufferFactory.GetBuffer(srcIp);
if (tpktBuff.Count > 0 && !tpktBuff.IsReassembled)
{
tf.LeadWithSegment = true;
tf.LeadingSegmentLength = tpktBuff.Last.NextFrameSegmentLength;
}
byte[] header = tcp.PayloadData.Take(TpktFileds.HeaderLength).ToArray();
if (tf.LeadWithSegment || TpktPacket.IsTpkt(header))
{
TpktPacket tpkt = new TpktPacket(tcp.PayloadData, tcp, tf);
if (tpkt.PayloadPacket != null || tpkt.PayloadData != null)
{
tpktBuff.Add(tpkt);
if (tpktBuff.IsReassembled)
{
foreach (TpktPacket reassTpkt in tpktBuff.Reassembled)
{
CotpPacket cotp = reassTpkt.Extract <CotpPacket>();
if (cotp.Type == CotpPacket.TpduType.DataTransfer)
{
cotpBuff = CotpPacketBufferFactory.GetBuffer(srcIp);
cotpBuff.Add(cotp);
if (cotpBuff.IsReassembled)
{
CotpPacket reassCotp = cotpBuff.Reassembled;
var session = new OsiSessionPacket(reassCotp.PayloadData, reassCotp);
//packets.Add();
var mms = session.Extract <MmsPacket>();
if (mms != null)
{
packets.Push(mms);
}
else
{
packets.Push(session);
}
cotpBuff.Reset();
}
}
}
tpktBuff.Reset();
}
}
}
}
private static void ExtractUpperPacket(TcpPacket tcp)
{
TpktFileds tf = new TpktFileds();
string srcIp = tcp.ParentPacket <IPv4Packet>().SourceAddress.ToString();
tpktBuff = TpktPacketBufferFactory.GetBuffer(srcIp);
if (tpktBuff.Count > 0 && !tpktBuff.IsReassembled)
{
tf.LeadWithSegment = true;
tf.LeadingSegmentLength = tpktBuff.Last.NextFrameSegmentLength;
}
byte[] header = tcp.PayloadData.Take(TpktFileds.HeaderLength).ToArray();
if (tf.LeadWithSegment || TpktPacket.IsTpkt(header))
{
TpktPacket tpkt = new TpktPacket(tcp.PayloadData, tcp, tf);
if (tpkt.PayloadPacket != null || tpkt.PayloadData != null)
{
tpktBuff.Add(tpkt);
if (tpktBuff.IsReassembled)
{
foreach (TpktPacket reassTpkt in tpktBuff.Reassembled)
{
CotpPacket cotp = reassTpkt.Extract <CotpPacket>();
if (cotp.Type == CotpPacket.TpduType.DataTransfer)
{
cotpBuff = CotpPacketBufferFactory.GetBuffer(srcIp);
cotpBuff.Add(cotp);
if (cotpBuff.IsReassembled)
{
CotpPacket reassCotp = cotpBuff.Reassembled;
var session = new OsiSessionPacket(reassCotp.PayloadData, reassCotp);
//packets.Add();
var mms = session.Extract <MmsPacket>();
if (mms != null)
{
packets.Add(mms);
}
else
{
packets.Add(session);
}
cotpBuff.Reset();
#region For debug
#if DEBUG && SHOW_DETAILS
MmsPacket mms = (MmsPacket)packets.Last().Extract(typeof(MmsPacket));
if (mms.Pdu is UnconfirmedPdu)
{
var pdu = mms.Pdu as UnconfirmedPdu;
string dsRef = pdu.Service.InformationReport.ListOfAccessResult[3].Success.GetValue <IEC61850Packet.Asn1.Types.VisibleString>().Value;
Console.WriteLine("No. {0}: {1}", currentPacketIndex, dsRef);
}
#endif
#endregion
}
}
}
tpktBuff.Reset();
}
}
}
}
