Error connection via public IP

Need Help With My Project
1

Hello,
I have a problem with function:
Blynk.begin
I have local server on Raspberry Pi. Works good.
With example below, works.
Blynk.begin (auth, ssid, pass, IPAddress(*local IP*), 8080);

but with public IP not works.
Blynk.begin (auth, ssid, pass, IPAddress(*public IP*), 8080);
It’s not problem with port forwarding because in webbrowser I can see admin panel. Even I can log in via app on smartphone. Addres server in app can be private IP, public IP, even with no-ip domain (via http port and https port).
But command Blynk.begin in arduino code works only on local IP. Why?

2

The admin panel is on port 9443, so it could easily be a port forwarding issue if you haven’t forwarded port 8080 to your local server in your router.

Pete.

3

I have forwarded port 9443, 8080, 80, 8442. Nothing happend. Eve I tried with dmz - still the same problem.

4

Can you post a screenshot of your router’s port forwarding screen?

Pete.

5

Maybe you can try this code

 Blynk.config(auth,"public IP",8080);
6

hi, after long time, I’m pretty sure, is not https connection. With raw example (Blynk.begin(auth, “blynk-cloud.com”, 80):wink: works fine.

I will let you know when I will solve the problem finally.