esp32 AT command transfer file , filename issue

[st90115]

i know that I can use AT+CIPSEND to send data.
I want to transfer the file in the SD card that is controlled by the MCU.
The ESP32 is only the wifi module. And the PC is the webserver or FTP.
I wants MCU searching the file to be send by itself.
but it doesn't define the file name that will be transferred or be saved in the PC webserver or FTP.
I think the transferring process are the following .
read file at the MCU
PC create the filename
PC receive the data
PC write the data to the file
But I can't find the command about the filename.
Or is it no way to do this through the AT command?
or can it do only by the esp-idf?