entered in the serial port is reported to the server data, in the serial port to send data: 123, the module will request data
from the server according to the request path and request method set, the server will then return the file value to the
serial port, as shown in the following figure: the red box in the figure is the request information of the module as an
HTTP client.
The POST method is generally recommended for clients to use when uploading larger data to the server, if you are just
requesting data from the server, you can choose the GET method
..
