// Ctor allows conversion from L4Packet to Connection.
public Connection(IPV4_PACKET pkt)
{
Type = new ConnectionType(pkt.protocol);
_state = new ConnectionState(TransmissionDirection.ONE_WAY);
SrcHost = new ConnectionAddress(pkt.source_address);
DstHost = new ConnectionAddress(pkt.destination_address);
SrcPort = pkt.source_port;
DstPort = pkt.destination_port;
DstGeo = new GeoData();
_packetCount = 1;
_dataSize = pkt.payload_size;
TimeStamp = DateTime.Now;
DstASN = null;
DstASNOrg = "--";
}
// Match packet to connection (-1 = no match, 0 = match, 1 = reverse match.
public MatchType PacketMatch(IPV4_PACKET pkt)
{
// Check protocol first (biggest devider of connections).
if (!Equals(this.Type.Protocol, pkt.protocol))
{
return(MatchType.NON_MATCH);
}
// Check if IP's and ports (or inverse) match.
if ((Equals(this.SrcHost.Address, pkt.source_address) && Equals(this.SrcPort, pkt.source_port)) &&
(Equals(this.DstHost.Address, pkt.destination_address) && Equals(this.DstPort, pkt.destination_port)))
{
return(MatchType.MATCH);
}
else if ((Equals(this.SrcHost.Address, pkt.destination_address) && Equals(this.SrcPort, pkt.destination_port)) &&
(Equals(this.DstHost.Address, pkt.source_address) && Equals(this.DstPort, pkt.source_port)))
{
return(MatchType.REV_MATCH);
}
return(MatchType.NON_MATCH);
}
