user66194: 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.

user71802: 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.

66194: <p>For example I have a <code>sim800l</code> module to communicate to a server using <code>websocket</code> (socket.io) but that module allows AT Command to operate.</p>

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

<p>thank you.</p>
 71802: <p>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.</p>
