/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public RawIPPacket(ByteArraySegment bas)
{
// Pcap raw link layer format does not have any header
// you need to identify whether you have ipv4 or ipv6
// directly by checking the IP version number.
// If the first nibble is 0x04, then you have IP v4
// If the first nibble is 0x06, then you have IP v6
// The RawIPPacketProtocol enum has been defined to match this.
var firstNibble = bas.Bytes[0] >> 4;
this.Protocol = (RawIPPacketProtocol)firstNibble;
this.header = new ByteArraySegment(bas);
this.header.Length = 0;
// parse the encapsulated bytes
this.payloadPacketOrData = new PacketOrByteArraySegment();
switch (this.Protocol)
{
case RawIPPacketProtocol.IPv4:
this.payloadPacketOrData.ThePacket = new IPv4Packet(this.header.EncapsulatedBytes());
break;
case RawIPPacketProtocol.IPv6:
this.payloadPacketOrData.ThePacket = new IPv6Packet(this.header.EncapsulatedBytes());
break;
default:
throw new NotImplementedException("Protocol of " + this.Protocol + " is not implemented");
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment" />
/// </param>
public RawIPPacket(ByteArraySegment bas)
{
// Pcap raw link layer format does not have any header
// you need to identify whether you have ipv4 or ipv6
// directly by checking the IP version number.
// If the first nibble is 0x04, then you have IP v4
// If the first nibble is 0x06, then you have IP v6
// The RawIPPacketProtocol enum has been defined to match this.
var firstNibble = bas.Bytes[0] >> 4;
Protocol = (RawIPPacketProtocol)firstNibble;
Header = new ByteArraySegment(bas)
{
Length = 0
};
// parse the encapsulated bytes
PayloadPacketOrData = new Lazy <PacketOrByteArraySegment>(() =>
{
var result = new PacketOrByteArraySegment();
switch (Protocol)
{
case RawIPPacketProtocol.IPv4:
result.Packet = new IPv4Packet(Header.EncapsulatedBytes());
break;
case RawIPPacketProtocol.IPv6:
result.Packet = new IPv6Packet(Header.EncapsulatedBytes());
break;
default:
throw new NotImplementedException("Protocol of " + Protocol + " is not implemented");
}
return(result);
}, LazyThreadSafetyMode.PublicationOnly);
}
