public DHCPv4Packet(
IPv4HeaderInformation ipv4Header,
Byte[] hwAddress,
UInt32 transactionId,
IPv4Address yourIPAddress,
IPv4Address gwIPAddress,
IPv4Address clientIPAddress,
DHCPv4PacketFlags flags,
IEnumerable <DHCPv4PacketOption> options
) : this()
{
TransactionId = transactionId;
ClientHardwareAddress = ByteHelper.CopyData(hwAddress);
HardwareAddressLength = (Byte)ClientHardwareAddress.Length;
YourIPAdress = IPv4Address.FromByteArray(yourIPAddress.GetBytes());
ClientIPAdress = IPv4Address.FromByteArray(clientIPAddress.GetBytes());
GatewayIPAdress = IPv4Address.FromByteArray(gwIPAddress.GetBytes());
Header = ipv4Header;
Flags = flags;
_options = new List <DHCPv4PacketOption>();
foreach (var item in options)
{
AddOption(item);
}
SetClientIdentifier();
_isValid = true;
}
private void SetIPHeader(DHCPv4Packet request)
{
IPv4Address source = IPv4Address.Empty;
IPv4Address destionation;
if (request.Header.Source == IPv4Address.Empty)
{
if ((request.Flags & DHCPv4PacketFlags.Broadcast) == DHCPv4PacketFlags.Broadcast)
{
destionation = IPv4Address.Broadcast;
}
else
{
destionation = YourIPAdress;
}
}
else
{
destionation = IPv4Address.FromAddress(request.Header.Source);
source = IPv4Address.FromAddress(request.Header.Destionation);
}
//if (MessageType == DHCPv4MessagesTypes.NotAcknowledge && (request.ClientIPAdress != request.Header.Source))
//{
// destionation = IPv4Address.Broadcast;
//}
Header = new IPv4HeaderInformation(source, destionation, request.Header.ListenerAddress);
}
public DHCPv4Packet(
IPv4HeaderInformation ipv4Header,
Byte[] hwAddress,
UInt32 transactionId,
IPv4Address yourIPAddress,
IPv4Address gwIPAddress,
IPv4Address clientIPAddress,
DHCPv4PacketFlags flags = DHCPv4PacketFlags.Unicast,
params DHCPv4PacketOption[] options
) : this(ipv4Header, hwAddress, transactionId, yourIPAddress, gwIPAddress, clientIPAddress, flags, options.ToList())
{
}
public static DHCPv4Packet FromByteArray(byte[] stream, IPv4HeaderInformation header) => FromByteArray(stream, header.Source, header.Destionation);