private async Task SendNak(DhcpMessage message, IPAddress requestedAddress)
{
Log.Debug("[NAK] Creating the negative acknowledgement");
message.OperationCode = DhcpOperation.BootReply;
message.YourIPAddress = requestedAddress;
message.ServerIPAddress = DhcpInterfaceAddress;
var optionBuilder = new DhcpOptionBuilder();
optionBuilder.AddOption(DhcpOptionCode.DhcpMessageType, DhcpMessageType.Nak);
var packet = MessageSerializer.ToPacket(message, optionBuilder.GetBytes());
await this.SendReply(packet).ConfigureAwait(false);
Log.Debug($"[NAK] IP Address '{requestedAddress}' was sent over '{IPAddress.Broadcast}'");
}
private async Task SendAck(DhcpMessage message, IPAddress clientAddress)
{
Log.Debug($"[ACK] Creating the acknowledgement");
message.OperationCode = DhcpOperation.BootReply;
message.YourIPAddress = clientAddress;
message.ServerIPAddress = DhcpInterfaceAddress;
var optionBuilder = new DhcpOptionBuilder();
optionBuilder.AddOption(DhcpOptionCode.DhcpMessageType, DhcpMessageType.Ack);
optionBuilder.AddOption(DhcpOptionCode.DhcpAddress, DhcpInterfaceAddress);
optionBuilder.AddOption(DhcpOptionCode.SubnetMask, Configuration.SubnetMask);
optionBuilder.AddOption(DhcpOptionCode.Router, Configuration.Gateway);
optionBuilder.AddOption(DhcpOptionCode.AddressTime, Configuration.LeaseTimeSeconds, true);
var packet = MessageSerializer.ToPacket(message, optionBuilder.GetBytes());
await this.SendReply(packet).ConfigureAwait(false);
Log.Debug($"[ACK] IP Address '{clientAddress}' was sent over '{IPAddress.Broadcast}'");
}
