var hostname = "SRV3011:1812";
            var sharedKey = "iAXc3B4.KV-m";
            var username = "svcMideye";
            var password = "";

            var rc = new RadiusClient(hostname, sharedKey);
            var authPacket = rc.Authenticate(username, password);
            authPacket.SetAttribute(new VendorSpecificAttribute(10, 1, UTF8Encoding.UTF8.GetBytes("Testing")));
            authPacket.SetAttribute(new VendorSpecificAttribute(10, 2, new[] { (byte)7 }));
            var receivedPacket = rc.SendAndReceivePacket(authPacket).Result;