nrf9160 MQTT sample problem

[MiroslavP]

Hello. I have problem with MQTT sample. I use NB-IoT network.

If I use public MQTT server without username and password, then MQTT sample ist works. But if I use MQTT server with username and password, then I have this response

Error 61 is for Connection refused, right ? I use this configure

And user name + password

It's good ? 

User name, password, port and IP, MQTT version for the server is good. I use another MQTT client with same configuration, and this is works.

This is output from the server, during connection from nrf9160

What am I doing wrong ? Thank you

[MiroslavP]

Sorry, here's the complete log

[Håkon Alseth]

Hi,

 

 

Error 61 is for Connection refused, right ?

For the inbuilt minimal libc in zephyr, that is correct (if you choose to use newlib-nano, errno.h will be different). Here from errno.h:

#define ECONNREFUSED 61 /* Connection refused */

 

For the .password and .user_name, these are both of struct mqtt_utf8, so you'll have to populate both the string and the size of the string:

client->password.utf8 = (u8_t*)MY_PWD;
client->password.size = strlen(MY_PWD);
client->user_name.utf8 = (u8_t*)USER;
client->user_name.size = strlen(USER);

 

Could you check if this helps?

 

Kind regards,

Håkon

[MiroslavP]

Yes this morning I found out. Well thank you.

But password, and user_name is pointer to struct. I used this solution

struct mqtt_utf8 pass,name;

pass.size = strlen("PASS");
pass.utf8 = (u8_t*)"PASS"
name.size = strlen("NAME");
name.utf8 = (u8_t *)"NAME";

client->password = &pass;
client->user_name = &name;

Thank you.

[Håkon Alseth]

Great to hear that you found the solution

Let me know if any other issues/questions should pop up.

 

Cheers,

Håkon

[MiroslavP]

Yes, I have question. He stopped working for me mqtt_siple example. I do not know why, but I've tried everything.

I only changed 

#define CONFIG_MQTT_BROKER_HOSTNAME "18.194.228.78"
#define CONFIG_MQTT_BROKER_PORT 1883
//#define CONFIG_LTE_NETWORK_MODE_LTE_M 1
#define CONFIG_LTE_NETWORK_MODE_NBIOT 1

And after rebuild and flashing, I have this output on the console

I do not know why. I reverted from git all source code, and change only this 4 line on the file autoconf.h. AT_client example is working. But mqtt_simple have this output.

Please what is bad ?