/// <summary>
/// Implements a function to be used in the Count Frame conversation processor.
/// </summary>
/// <param name="flowKey"></param>
/// <param name="frames"></param>
/// <returns></returns>
private (string key, int frames, int octets, int ip, int tcp, int udp) CountFrames(FlowKey flowKey, System.Collections.Generic.IEnumerable <Memory <byte> > frames)
{
(int octets, int ip, int tcp, int udp) GetFrameSize(Memory <byte> memory)
{
var meta = default(FrameMetadata);
var bytes = FrameMetadata.FromBytes(memory.Span, ref meta);
var packet = PacketDotNet.Packet.ParsePacket((PacketDotNet.LinkLayers)meta.LinkLayer, bytes.ToArray());
return(meta.OriginalLength,
packet.Extract <PacketDotNet.InternetPacket>() != null ? 1 : 0,
packet.Extract <PacketDotNet.TcpPacket>() != null ? 1 : 0,
packet.Extract <PacketDotNet.UdpPacket>() != null ? 1 : 0
);
}
var framesList = frames.ToList();
// intentionally it is computed in this inefficient way to test
// the implementated iteration over the input collection
return(flowKey.ToString(), framesList.Count,
framesList.Sum(x => GetFrameSize(x).octets),
framesList.Sum(x => GetFrameSize(x).ip),
framesList.Sum(x => GetFrameSize(x).tcp),
framesList.Sum(x => GetFrameSize(x).udp)
);
}
public bool Add(FlowKey flowkey)
{
lock (m_syncObject)
{
if (m_itemCount < m_blockCapacity)
{
m_filter.Add(flowkey.ToString());
m_itemCount++;
return(true);
}
else
{
return(false);
}
}
}
internal static string GetStream(this FlowKey key, string suffix)
{
var prefix = key.Type.IsSingleInstance ? key.ToString() : $"{key.Type}|{key.Id}";
return($"{prefix}-{suffix}");
}
public void SetFlowKey(FlowKey flowKey)
{
m_conversationModel.ConversationKey = flowKey.ToString();
}
public override string ToString() =>
Checkpoint.IsNone ? Key.ToString() : $"{Key}@{Checkpoint.ToInt64()}";
public override string ToString()
{
return(FlowKey.ToString());
}
public bool Contains(FlowKey flowkey)
{
return(m_filter.Contains(flowkey.ToString()));
}
