For example I have a sim800l module to communicate to a server using websocket (socket.io) but that module allows AT Command to operate.

I have successfully made an HTTP request, but I don't know how to make a request via WebSocket using AT Command.

thank you.

  • try to use some websockets library over TinyGSM library
    – Juraj
    May 8 '20 at 11:58

Yes, you can @Imanuel. You just need to establish a Simple TCP connection and then send the HTTP headers for upgrading the normal HTTP connection to WebSockets.

  • 3
    This is good so far as it goes. But it needs more detail to be a practical answer.
    – timemage
    Jan 20 '21 at 11:59

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