/// <summary>
/// Parsing frame from l2 data.
/// </summary>
/// <returns></returns>
/// TODO refactor this to more appropriate place
public bool ParseFrameForCluster()
{
var packet = new PmPacket(this.PmLinkType, (this.L2DataWcf = this.L2Data()));
this.L3Offset = this.L2Offset + packet.PacketHeaderOffset;
this.IpProtocol = packet.ProtocolIdentifier;
switch (packet.ProtocolIdentifier)
{
case IPProtocolType.IP:
case IPProtocolType.TCP:
case IPProtocolType.UDP:
this.SrcAddress = packet.SourceAddress;
this.DstAddress = packet.DestinationAddress;
break;
//Possible 6in4
case IPProtocolType.IPV6:
this.SrcAddress = packet.SourceAddress;
this.DstAddress = packet.DestinationAddress;
break;
}
this.SrcPort = packet.SourceTransportPort;
this.DstPort = packet.DestinationTransportPort;
this.PmCaptureRefId = this.PmCapture.Id;
if (this.TimeStamp == DateTime.MinValue)
{
this.TimeStamp = DateTime.MinValue.ToUniversalTime();
}
return(this.IpProtocol == IPProtocolType.TCP || this.IpProtocol == IPProtocolType.UDP || this.IpProtocol == IPProtocolType.IP ||
this.IpProtocol == IPProtocolType.IPV6);
}
/// <summary>
/// BEAWARE Runns in parallel
/// </summary>
/// <param name="pmFrame"></param>
/// <param name="parentPacket"></param>
/// <returns></returns>
public async Task CreateAndAddToMetaFramesVirtualFrame(PmFrameBase pmFrame, PmPacket parentPacket)
{
PmFrameVirtual virtualFrame = null;
switch (pmFrame.IpProtocol)
{
case IPProtocolType.GRE:
var gre = new GrePacket(new ByteArraySegment(pmFrame.L4Data()));
virtualFrame = new PmFrameVirtual(pmFrame.PmCapture, pmFrame.FrameIndex, pmFrame.TimeStamp, pmFrame.IncludedLength, (pmFrame.L4Offset + gre.Header.Length));
break;
case IPProtocolType.IPV6:
virtualFrame = new PmFrameVirtual(pmFrame.PmCapture, pmFrame.FrameIndex, pmFrame.TimeStamp, pmFrame.IncludedLength, (pmFrame.L4Offset));
break;
case IPProtocolType.UDP:
var udp = new UdpPacket(new ByteArraySegment(pmFrame.L4Data()));
//Port 3544 is used to communicate with Teredo Server. We need communication between host and Teredo Relay (temporarily solution)
if (udp.DestinationPort == 3544 || udp.SourcePort == 3544)
{
break;
}
virtualFrame = new PmFrameVirtual(pmFrame.PmCapture, pmFrame.FrameIndex, pmFrame.TimeStamp, pmFrame.IncludedLength,
(pmFrame.L4Offset + udp.Header.Length));
break;
}
if (virtualFrame != null)
{
await this.PmMetaFramesBufferBlock.SendAsync(virtualFrame);
}
}