esp32 arduinoOTA sethostname() not working

[Kiuman]

Hi,
I'm using ArduinoOTA.sethostname("esp32-entrance-device"); and the hostname in the Arduino IDE Network ports is always showing as esp32-[MAC address].
Maybe I'm a little bit rusty with my code abilities, but isn't _hostname missing in the ArduinoOTAClass::ArduinoOTAClass() definition?

Link to code: https://github.com/esp8266/Arduino/blob/master/libraries/ArduinoOTA/ArduinoOTA.cpp

Thanks!

[lbernstone]

esp32 != esp8266. https://github.com/espressif/arduino-esp32/blob/master/libraries/ArduinoOTA/src/ArduinoOTA.h#L82
Call setHostname before begin.

[EsserPrototyping]

The following worked, but i don´t think you really need the disconnect and config parts..

In my case it wasnt the ESP32, it was my router. Check that you don´t have the mac or ip assigned anywhere in the router and change the lease time of dhcp to something like one minute.. now the router should see the ESP with it´s new hostname..

`
char hname[] = "ESP32_1234";

void setup () {

WiFi.disconnect(); // probalbly not needed
WiFi.config(INADDR_NONE, INADDR_NONE, INADDR_NONE); // probalbly not needed
WiFi.setHostname(hname);
WiFi.mode(WIFI_STA);

WiFi.begin(ssid, password);

}
`

[Kiuman]

Well thanks to both, indeed ArduinoOTA.setHostname(hostname); (from ArduinoOTA.h) doesn't work as it is described, but WiFi.setHostname(hostname); (from WiFi.h) does work as intended.
Issue closed.
Edit: typos.

[mepster]

@EsserPrototyping thanks for the tip!

Turns out for me it was

WiFi.config(INADDR_NONE, INADDR_NONE, INADDR_NONE);

that was needed... although I actually used

WiFi.config(INADDR_NONE, INADDR_NONE, INADDR_NONE, INADDR_NONE);

I found in addition that WiFi.mode(WIFI_STA); and WiFi.disconnect(); were not necessary.

My complete code:

WiFi.begin(ssid, pass);
WiFi.config(INADDR_NONE, INADDR_NONE, INADDR_NONE, INADDR_NONE); // required to set hostname properly
WiFi.setHostname(hostname);