MQTT connection error

[marsal]

Hi, as I am beginner, will be please anybody kindly help me with my first project?

I'd like to connect to an MQTT broker available at 89.24.xxx.xxx:2223 (mosquitto 2.0.18) and send tome topics to it. Initially, without TLS. I am able to connect to the mqtt broker with another client (Android app MyMQTT) successfully and subscribe/publish messages.

I have combined some code samples (below), I am successfull in connecting to LTE-M, getting IP address and getting http get response, but MQTT connect ends in -106 error.

Thank you very much in advance!

Martin

Here is what I get:

My code:

#include <zephyr/kernel.h>

#include <modem/lte_lc.h>

#include <modem/modem_info.h>

#include <modem/nrf_modem_lib.h>

#include <date_time.h>

...

Edit:
Based on the answer below, the code was removed from the ticket as not relevant.

m

[dejans]

Hi,

I am beginner, will be please anybody kindly help me with my first project?

You could start by looking at this MQTT exercise and this MQTT sample.

Best regards,
Dejan

[marsal]

Thanks a lot, Dejan. This looks like an excellent tutorial. It's a shame that I bothered you before knowing about it...

Edit:

Using the tutorial, everything works perfectly.

Every beginner should start with the tutorial section first.

Thanks again!

[dejans]

Hi,

marsal said:

This looks like an excellent tutorial. It's a shame that I bothered you before knowing about it...

I hope you will find mentioned resources useful.

Best regards,
Dejan