Port configuration, Arduino doesn't connect to the requested resource.

[Al_Granados]

I have a Django application running on Render.com, but my Arduino device is not connecting to the service. When I use a browser, it finds the service immediately, but when I try to consume the resource from the Arduino device, it simply fails.

That said, I’ve tried using beeceptor.com for testing, and there are no issues. I believe it’s the way ports are managed on Render.com, but I don’t know what I should configure to allow me to connect from the device.

HttpClient http(client, server, port);

It requires me to specify the port, and from what I understood, the port is 10000, but this is used internally. The accepted requests are on ports 443 and 80, but neither of these ports works on the device.

Which port should I use, or what should I configure in the service?

[al_ps]

Hi,

Render Web Services are only available publicly on port 443 (the HTTPS default). HTTP (Port 80) requests will be redirected to HTTPS ((docs)[https://render.com/docs/web-services#connecting-from-the-public-internet])

The port you use in your code is for platform internal/private network use only, it’s not accessible publicly.

Maybe HttpClient doesn’t support HTTPS?

Alan

[Al_Granados]

The port I’m using in the Arduino code is 443, and HttpClient is compatible with HTTPS. I’ve tested it with other platforms, and the calls are received correctly. I don’t know what’s happening.

[al_ps]

If the requests are working in the browser, it would point to something different about the Arduino request. Y

You would need to see if the Arduino client can provide some more detail of the issue it’s having, e.g. errors, logs, HTTP status code, headers, etc.

Alan