static void Request(DHCPRequest dhcpRequest)
{
var type = dhcpRequest.GetMsgType();
var mac = ByteArrayToString(dhcpRequest.GetChaddr());
// IP for client
IPAddress ip;
if (!leases.TryGetValue(mac, out ip))
{
ip = new IPAddress(new byte[] { 10, 0, 0, nextIP++ });
leases[mac] = ip;
}
Console.WriteLine(type.ToString() + " request from " + mac + ", it will be " + ip.ToString());
var options = dhcpRequest.GetAllOptions();
Console.Write("Options:");
foreach (DHCPOption option in options.Keys)
{
Console.WriteLine(option.ToString() + ": " + ByteArrayToString(options[option]));
}
// Lets show some request info
var requestedOptions = dhcpRequest.GetRequestedOptionsList();
if (requestedOptions != null)
{
Console.Write("Requested options:");
foreach (DHCPOption option in requestedOptions) Console.Write(" " + option.ToString());
Console.WriteLine();
}
// Option 82 info
var relayInfoN = dhcpRequest.GetRelayInfo();
if (relayInfoN != null)
{
var relayInfo = (RelayInfo)relayInfoN;
if (relayInfo.AgentCircuitID != null) Console.WriteLine("Relay agent circuit ID: " + ByteArrayToString(relayInfo.AgentCircuitID));
if (relayInfo.AgentRemoteID != null) Console.WriteLine("Relay agent remote ID: " + ByteArrayToString(relayInfo.AgentRemoteID));
}
Console.WriteLine();
var replyOptions = new DHCPReplyOptions();
// Options should be filled with valid data. Only requested options will be sent.
replyOptions.SubnetMask = IPAddress.Parse("255.255.255.0");
replyOptions.DomainName = "SharpDHCPServer";
replyOptions.ServerIdentifier = IPAddress.Parse("10.0.0.1");
replyOptions.RouterIP = IPAddress.Parse("10.0.0.1");
replyOptions.DomainNameServers = new IPAddress[] { IPAddress.Parse("192.168.100.2"), IPAddress.Parse("192.168.100.3") };
// Some static routes
replyOptions.StaticRoutes = new NetworkRoute[] {
new NetworkRoute(IPAddress.Parse("10.0.0.0"), IPAddress.Parse("255.0.0.0"), IPAddress.Parse("10.0.0.1")),
new NetworkRoute(IPAddress.Parse("192.168.0.0"), IPAddress.Parse("255.255.0.0"), IPAddress.Parse("10.0.0.1")),
new NetworkRoute(IPAddress.Parse("172.16.0.0"), IPAddress.Parse("255.240.0.0"), IPAddress.Parse("10.0.0.1")),
new NetworkRoute(IPAddress.Parse("80.252.130.248"), IPAddress.Parse("255.255.255.248"), IPAddress.Parse("10.0.0.1")),
new NetworkRoute(IPAddress.Parse("80.252.128.88"), IPAddress.Parse("255.255.255.248"), IPAddress.Parse("10.0.0.1")),
};
// Lets send reply to client!
if (type == DHCPMsgType.DHCPDISCOVER)
dhcpRequest.SendDHCPReply(DHCPMsgType.DHCPOFFER, ip, replyOptions);
if (type == DHCPMsgType.DHCPREQUEST)
dhcpRequest.SendDHCPReply(DHCPMsgType.DHCPACK, ip, replyOptions);
}
private void DataReceived(object o)
{
var data = (byte[])o;
try
{
var dhcpRequest = new DHCPRequest(data, socket, this);
//ccDHCP = new clsDHCP();
//data is now in the structure
//get the msg type
OnDataReceived(dhcpRequest);
var msgType = dhcpRequest.GetMsgType();
switch (msgType)
{
case DHCPMsgType.DHCPDISCOVER:
OnDiscover(dhcpRequest);
break;
case DHCPMsgType.DHCPREQUEST:
OnRequest(dhcpRequest);
break;
case DHCPMsgType.DHCPDECLINE:
OnDecline(dhcpRequest);
break;
case DHCPMsgType.DHCPRELEASE:
OnReleased(dhcpRequest);
break;
case DHCPMsgType.DHCPINFORM:
OnInform(dhcpRequest);
break;
//default:
// Console.WriteLine("Unknown DHCP message: " + (int)MsgTyp + " (" + MsgTyp.ToString() + ")");
// break;
}
}
catch
{
// Ignore
}
}
private void DataReceived(object o)
{
var data = (byte[])o;
try
{
var dhcpRequest = new DHCPRequest(data, socket, this);
//ccDHCP = new clsDHCP();
//data is now in the structure
//get the msg type
OnDataReceived(dhcpRequest);
var msgType = dhcpRequest.GetMsgType();
switch (msgType)
{
case DHCPMsgType.DHCPDISCOVER:
OnDiscover(dhcpRequest);
break;
case DHCPMsgType.DHCPREQUEST:
OnRequest(dhcpRequest);
break;
case DHCPMsgType.DHCPDECLINE:
OnDecline(dhcpRequest);
break;
case DHCPMsgType.DHCPRELEASE:
OnReleased(dhcpRequest);
break;
case DHCPMsgType.DHCPINFORM:
OnInform(dhcpRequest);
break;
//default:
// Console.WriteLine("Unknown DHCP message: " + (int)MsgTyp + " (" + MsgTyp.ToString() + ")");
// break;
}
}
catch
{
// Ignore
}
}
