static void Main(string[] args)
{
Int32 sessionId = (Int32)DateTime.Now.Ticks;
using (Socket dhcpClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
{
dhcpClientSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
dhcpClientSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, 1);
dhcpClientSocket.Bind(new IPEndPoint(IPAddress.Parse("0.0.0.0"), 68));
DhcpMessage discoverMessage = new DhcpMessage();
discoverMessage.SessionId = sessionId;
discoverMessage.Operation = DhcpOperation.BootRequest;
discoverMessage.Hardware = HardwareType.Ethernet;
discoverMessage.Flags = 128;
Byte[] physicalAddr = NetworkInterface.GetAllNetworkInterfaces()[0].GetPhysicalAddress().GetAddressBytes();
discoverMessage.ClientHardwareAddress = physicalAddr;
discoverMessage.AddOption(DhcpOption.DhcpMessageType, (Byte)DhcpMessageType.Discover);
Byte[] clientId = new Byte[physicalAddr.Length + 1];
clientId[0] = (Byte)1;
physicalAddr.CopyTo(clientId, 1);
discoverMessage.AddOption(DhcpOption.AutoConfig, 1);
discoverMessage.AddOption(DhcpOption.Hostname, Encoding.ASCII.GetBytes(Environment.MachineName));
discoverMessage.AddOption(DhcpOption.ClassId, 77, 83, 70, 84, 32, 53, 46, 48);
discoverMessage.AddOption(DhcpOption.ClientId, clientId);
discoverMessage.AddOption(DhcpOption.ParameterList, 1, 15, 3, 6, 44, 46, 47, 31, 33, 121, 249, 43);
dhcpClientSocket.SendTo(discoverMessage.ToArray(), new IPEndPoint(IPAddress.Broadcast, 67));
Byte[] buffer = new Byte[1024];
Int32 len = dhcpClientSocket.Receive(buffer);
Byte[] messageData = new Byte[len];
Array.Copy(buffer, messageData, Math.Min(len, buffer.Length));
DhcpMessage responseMessage = new DhcpMessage(messageData);
Console.ReadLine();
}
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main(String[] args)
{
DhcpServerConfigurationSection dhcpConfig = ConfigurationManager.GetSection("dhcpServer") as DhcpServerConfigurationSection;
DhcpServer server = new DhcpServer();
if (dhcpConfig != null)
{
if (dhcpConfig.NetworkInterface >= 0)
{
server.DhcpInterface = NetworkInterface.GetAllNetworkInterfaces()[dhcpConfig.NetworkInterface];
}
server.StartAddress = InternetAddress.Parse(dhcpConfig.StartAddress.Trim());
server.EndAddress = InternetAddress.Parse(dhcpConfig.EndAddress.Trim());
server.Subnet = InternetAddress.Parse(dhcpConfig.Subnet.Trim());
server.Gateway = InternetAddress.Parse(dhcpConfig.Gateway.Trim());
server.LeaseDuration = dhcpConfig.LeaseDuration;
server.OfferTimeout = dhcpConfig.OfferTimeout;
server.DnsSuffix = dhcpConfig.DnsSuffix;
foreach (InternetAddressElement dnsServer in dhcpConfig.DnsServers)
{
server.DnsServers.Add(InternetAddress.Parse(dnsServer.IPAddress.Trim()));
}
foreach (PhysicalAddressElement macAllow in dhcpConfig.MacAllowList)
{
if (macAllow.PhysicalAddress.Trim() == "*")
{
server.ClearAcls();
server.AllowAny = true;
break;
}
else
{
server.AddAcl(PhysicalAddress.Parse(macAllow.PhysicalAddress), false);
}
}
foreach (PhysicalAddressElement macDeny in dhcpConfig.MacDenyList)
{
if (macDeny.PhysicalAddress.Trim() == "*")
{
server.ClearAcls();
server.AllowAny = false;
break;
}
else
{
server.AddAcl(PhysicalAddress.Parse(macDeny.PhysicalAddress), true);
}
}
foreach (PhysicalAddressMappingElement macReservation in dhcpConfig.MacReservationList)
{
server.addReservation(macReservation.PhysicalAddress, macReservation.IPAddress);
}
}
if (args.Length > 0 && (ContainsSwitch(args, "console") || ContainsSwitch(args, "debug")))
{
if (ContainsSwitch(args, "debug"))
{
Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
}
DhcpHost host = new DhcpHost(server);
host.ManualStart(args);
Console.WriteLine("DHCP Service Running.");
Console.WriteLine("Hit [Enter] to Terminate.");
Console.ReadLine();
host.ManualStop();
}
else
{
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[] { new DhcpHost(server) };
ServiceBase.Run(ServicesToRun);
}
}