Hi,
I use example eth basic with W5500 by SPI;
I have tried read data from server;

On 4 attempt is everything ok

on 5 attempt I have read inncorect part of data and I cannt contiunue process

Hi, I have strange situatuion;
I have WROOM ESP32D , run example ethernet with W5500 by SPI; ESP32 with wiznet is connecting by RJ45 to router/access point;

example works when I have resposne GET from my laptop in connection peer-to-peer;
dhcp run on laptop;
Zrzut ekranu z 2021-05-24 16-52-37.png ...

Hi, I think you should use functuon esp_read_mac(...) from <esp_system.h> module.
you migh use the array of mac like a globall value or include appropriate function.

uchar mac_base[6] = {0};
esp_read_mac(mac_base,0);

if you were read/check this value (for some logs or something) in appropriate ...

Any could help me, and know what it mean?

I have problem with packet or rather fragments of packet.
for example (screen 2nd) I have recieved 11799 B of 48000.
And debug logs isn't tell me anything or I cant read logs appropriate

is ZZZ value says how many Bytes I have already read?
but it dosnt ...

I have some problem with downloading files from server.
Do anyone knows what does mean log tcp_recved:(in LWIP comopnent);
esspecialy the last value in (ZZZ)
I think that wnd does mean size availe window_buffor for TCP;
tcp_recved: received XXX bytes, wnd YYYY, (ZZZ)
Zrzut ekranu z 2021-05-10 14-23 ...

Thank you, indeed Callback solve this aspect.

If I understand well, the method/function

esp_http_client_set_header(...)
base on esp_http_client and used a param whis is type esp_http_client_handle_t

but functions esp_https_ota_get_img_desc(...) or
esp_https_ota_perform(...)
used a param https_ota_handle_t
and this a diffrent object/type ...

The problem was solved. Probably configuration for PIN Interrupt oraz quality of connection (wires) was a problem.
The topic is to closed.

Do anyone know what could be interesting in this log?
I see something in DHCP frame with string "espressif"

thx @falmue

In reference to your post, I had made next instance of project on example and I did this mistake. Thx for your attention ;)
but the problem with IP is still exist
Zrzut ekranu z 2021-01-15 15-20-25.png

Could share your sdk file? maybe some setting is LWIP section is imporatant ...