private DhcpRequestType GetDhcpRequestType(ClientInfomation clientInfo, IPEndPoint endPoint)
{
DhcpRequestType res;
if (clientInfo.ServerAddress != null && clientInfo.RequestAddress != null && clientInfo.ClientAddress.Equals(IPAddress.Any))
{
res = DhcpRequestType.Selecting;
}
else
{
switch (clientInfo.ServerAddress)
{
case null when clientInfo.RequestAddress != null && clientInfo.ClientAddress.Equals(IPAddress.Any):
res = DhcpRequestType.InitReboot;
break;
case null when clientInfo.RequestAddress == null && endPoint.Address.Equals(_settings.ServerIp):
res = DhcpRequestType.ReNewing;
break;
case null when clientInfo.RequestAddress == null && endPoint.Address.Equals(IPAddress.Broadcast):
res = DhcpRequestType.ReBinding;
break;
default:
res = DhcpRequestType.Unknown;
break;
}
}
return(res);
}
public ClientInfomation GetClientInfo()
{
// TODO
if (IsBuiltTobeSent)
{
throw new Exception();
}
var client = new ClientInfomation
{
MacAddress = packet.chaddr.ToString(packet.hlen),
ClientAddress = new IPAddress(packet.ciaddr),
YourAddress = new IPAddress(packet.yiaddr),
TransactionID = BitConverter.ToUInt32(packet.xid, 0),
RelayAgentAddress = new IPAddress(packet.giaddr),
CastType = (BroadCastType)packet.flags[0]
};
if (packet.options.GetOptionData(DhcpOptionType.ClientIdentifier) != null)
{
client.ClientIdentifier = Encoding.Default.GetString(packet.options.GetOptionData(DhcpOptionType.ClientIdentifier));
}
if (packet.options.GetOptionData(DhcpOptionType.RequestedIPAddress) != null)
{
client.RequestAddress = new IPAddress(packet.options.GetOptionData(DhcpOptionType.RequestedIPAddress));
}
if (packet.options.GetOptionData(DhcpOptionType.ServerIdentifier) != null)
{
client.ServerAddress = new IPAddress(packet.options.GetOptionData(DhcpOptionType.ServerIdentifier));
}
return(client);
}
