hi
there are many help regarding sending data from arduino to server using a GET or POST request.
But in my project I need a two way communication between server and arduino, like some sort of acknowledgement that server has received the data thus arduino doesn't need to resend that particular value.
Also a connection to server from which arduino can receive some values from the server.
Is it possible to look up for a particular value in sever and fetch it in arduino for processing.
Thanks.