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khoih-prog / ESP_WiFiManager

This is an ESP32 / ESP8266 WiFi Connection Manager with fallback web configuration portal. Use this library for configuring ESP32 (including ESP32-S2 and ESP32-C3), ESP8266 modules' WiFi, etc. Credentials at runtime. You can also specify static DNS servers, personalized HostName, fixed or random AP WiFi channel. With examples supporting ArduinoJson
MIT License
371 stars 97 forks source link

dhcps: send_nak>>udp_sendto result 0 at random times #77

Closed MikeyMoMo closed 2 years ago

MikeyMoMo commented 2 years ago

Running your code and, as far as I know, not using your NTP code since I can't find any documentation on how to use it nor any examples. I don't care to learn every line of your code to learn how to use the NTP code, so I use TimeLib. I don't get this on any other program using TimeLib, just when I use your WiFi library. I get this message, rarely, at random times:

dhcps: send_nak>>udp_sendto result 0

What can be done for this?

Mike

khoih-prog commented 2 years ago

This has nothing to do with this library, and I think that you're using ESP8266

The message came from ESP8266 core's esp-dhcpserver.c#L508-L512

        if (!lwiperr_check("dhcps send ack", udp_sendto( pcb_dhcps, p, &broadcast_dhcps, DHCPS_CLIENT_PORT ))){
#if DHCPS_DEBUG
            os_printf("dhcps: send_ack>>udp_sendto\n");
#endif
    }

You can try to turn off the DHCPS_DEBUG

Please remember next time to post the issue with more information (see Issue: Bug report ), or your issue will be deleted immediately.

Sorry I won't spend any more time on this errant non-issue.

MikeyMoMo commented 2 years ago

Absolutely NOT using an ESP8266. I have some but don't use them any longer. Sorry this is a non-issue with you. There are surely enough posts with this exact problem! It is an issue with people out here trying to use your library. It does NOT happen with any other code or library. I have never seen this error until I used your code.