/**
* Proxies the given packet to the server given in the Proxy connection.
* Stores the Proxy connection object in the cache with a key that
* is added to the packet in the "Proxy-State" attribute.
* @param packet the packet to Proxy
* @param proxyCon the RadiusProxyConnection for this packet
* @throws IOException
*/
protected void proxyPacket(RadiusPacket packet, RadiusProxyConnection proxyConnection)
{
lock (typeof (RadiusProxy))
{
// add Proxy-State attribute
proxyIndex++;
String proxyIndexStr = proxyIndex.ToString();
packet.AddAttribute(new RadiusAttribute(33, Encoding.UTF8.GetBytes(proxyIndexStr)));
// store RadiusProxyConnection object
proxyConnections.Add(proxyIndexStr, proxyConnection);
}
// get server address
//IPAddress serverAddress = proxyConnection.getRadiusServer().EndpointAddress.Address;
//int serverPort = proxyConnection.getRadiusServer().EndpointAddress.Port;
String serverSecret = proxyConnection.RadiusServer.SharedSecret;
// save request authenticator (will be calculated new)
byte[] auth = packet.Authenticator;
// encode new packet (with new authenticator)
var bos = new MemoryStream();
packet.EncodeRequestPacket(bos, serverSecret);
byte[] data = bos.ToArray();
bos.Dispose();
//var datagram = new DatagramPacket(data, data.Length, serverAddress, serverPort);
// restore original authenticator
packet.Authenticator = auth;
// send packet
//Socket proxySocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.IP);
proxySocket.Send(data, data.Length);
//proxySocket.send(datagram);
}
/**
* Returns the socket used for the server communication. It is
* bound to an arbitrary free local port number.
* @return local socket
* @throws SocketException
*/
/**
* Creates a datagram packet from a RadiusPacket to be send.
* @param packet RadiusPacket
* @param port destination port number
* @return new datagram packet
* @throws IOException
*/
protected byte[] MakeDatagramPacket(RadiusPacket packet)
{
using (var bos = new MemoryStream())
{
packet.EncodeRequestPacket(bos, SharedSecret);
byte[] data = bos.ToArray();
bos.Close();
bos.Dispose();
return data;
}
}