How to connect 2 esp32 by using BLE

Hello everyone,

I am currently trying to connect 2 ESP32 via BLE by using the examples from this library : GitHub - nkolban/ESP32_BLE_Arduino: The library source for the ESP32 BLE support for Arduino.
I have set up one ESP32 as a server which contain some data that can be read by the ESP32 that I set up as a client but it doesn't work.
Have you found a solution ?

Thanks in advance.