I have tried to implement this for nearly 10 hours as well and couldnt find a solution. It would be nice to get an official statement if this is even possible API wise.

I have the sample problem. Has anyone found a Solution yet? I couldnt find anything in this forum, or the esp_idf or the BLE Documentation. *pushs topic*

Have you found a solution to your problem? I want to do the same thing, but I have just started working with the esp and bluetooth, so im not really progressing atm. It would be nice to see some snippets if you have solved the problem! Thanks!