ESP32 : memory leak ? about ntpclient HOT 6 CLOSED

I confirm, every NTP request the esp32 loses 1760 bytes of free heap...

from ntpclient.

You are right. This seems to be caused by ESP32 AsyncUDP class. I've created a new library that uses internal LWIP functions both on ESP8266 and ESP32, so I get rid of external libraries. You can find it on https://github.com/gmag11/ESPNtpClient

from ntpclient.

I close this issue. Feel free to reopen it if you have additional info

from ntpclient.

I confirm, every NTP request the esp32 loses 1760 bytes of free heap...

That's correct, I found that also. And it is difficult for me to narrow down with this lib.

from ntpclient.

I keep this library for compatibility. But for some time ago it is not the best way to synchronize time. You should use internal esp32 functions. Check this tutorial https://randomnerdtutorials.com/esp32-ntp-timezones-daylight-saving/

This works with esp8266 too.

from ntpclient.

I keep this library for compatibility. But for some time ago it is not the best way to synchronize time. You should use internal esp32 functions. Check this tutorial https://randomnerdtutorials.com/esp32-ntp-timezones-daylight-saving/

This works with esp8266 too.

Thanks for your reply and contribution. I am reading your code and try to figure out. Hope I could solve this issue. Thanks again for your help!

from ntpclient.