I'm about to work on a project in which I have to use sim800 as a client in a network. Since I must be able to connect the microcontroller to a specific website and I've never done that before, I need a free and simple website as a tcp ip socket server for my primary tests.
I need a socket host keeps listening to a client connection request on a specific port (eg, 8081) online and ready-to-use. On the other hand, I need to monitor the received data and I must be able to send data to the client either.
could someone introducing a website for this issue?