public void SendInv(string address, string kind, List <byte[]> items)
        {
            var message = new CommandMessage();

            message.Command = CommandType.Inv;
            message.Client  = _blockchainPeer.ClientDetails();
            var inv = new Inv()
            {
                Items = items,
                Kind  = kind
            };

            message.Data = inv.Serialize();
            _blockchainPeer.SendMessageToAddressAsync(message, address);
        }