BiTel

RadiusClient radiusClient = new RadiusClient( InetAddress.getByName( nasHost ), nasPort, nasSecret );

RadiusPacket request = radiusClient.createAccountingRequest();
request.setStringAttribute( -1, RadiusDictionary.User_Name, username );
request.setByteAttribute( -1, RadiusDictionary.Framed_IP_Address, ipAddressBytes );

//Future<Boolean> result = radiusClient.sendAsync( request );
boolean result = radiusClient.send( request, 5, TimeUnit.SECONDS );

private ConnectionSet connectionSet;

public Object connect()
{
  ...
  ServerContext context = ServerContext.get();
  this.connectionSet = context.getConnectionSet();
  ...
}