Beautify Restart Page and auto reload

[caco3]

When doing a restart, the iframe shows a rater ugly non-styled message. !!! System will restart within 5 sec!!!.

I know this comes directly from the code (https://github.com/jomjol/AI-on-the-edge-device/blob/master/code/components/jomjol_fileserver_ota/server_ota.cpp#L438).

I would suggest to also show

• a formated message
• Using javascript to automatically reload the page once the ESP32 is up again.

let me know what you think and I will try to create a PR.

[jomjol]

Updates to the html page are always welcome - just go ahead!

[caco3]

It will also need to embed some html code in the place of https://github.com/jomjol/AI-on-the-edge-device/blob/master/code/components/jomjol_fileserver_ota/server_ota.cpp#L438

Could you explain, what the line ESP_LOGI(TAGPARTOTA, "!!! System will restart within 5 sec!!!"); does?

For following lines I interpret that thats what gets sent to the Webbrowser:

const char* resp_str = "!!! System will restart within 5 sec!!!";
    httpd_resp_send(req, resp_str, strlen(resp_str)); 

[jomjol]

Yes, this is true. With this line of code you send the html to the client.

[caco3]

Please have a look on #949