listener = new TcpListener(IPAddress.Any, 80);
            var currentAcceptTcpClient = listener.BeginAcceptTcpClient(null, null);
            while (true)
            {
                foreach (TcpClient client in clients)
                {
                    if (client.Available > 4)
                    {
                        //BLABLA PROCESS SHIT
                    }
                }

                if (currentAcceptTcpClient.IsCompleted)
                {
                    clients.Add(listener.EndAcceptTcpClient(currentAcceptTcpClient));
                    currentAcceptTcpClient = listener.BeginAcceptTcpClient(null, null);
                }
            }