getaddrinfo returns error 12 with new modem firmware 1.1.0 worked with 1.0.1

[AlexVM]

Hello :)

After upgrading the modem firmware of the nRF9160 to version 1.1.0 (mfw_nrf9160_1.1.0.zip) the call to getaddrinfo returns error 12.

If I downgrade to version 1.0.1 everything works as expected and the ip address is resolved.

    int err;
	struct addrinfo *result;
	struct addrinfo hints = {
		.ai_family = AF_INET,
		.ai_socktype = socktype
	};
	char ipv4_addr[NET_IPV4_ADDR_LEN];

	err = getaddrinfo(name, NULL, &hints, &result);
	if (err) {
		LOG_ERR("ERROR: getaddrinfo failed %d %s", err, strerror(err));
		return err;
	}

--> app: ERROR: getaddrinfo failed 12 Not enough space

[Didrik Rokhaug]

Hi.

 

If I downgrade to version 1.0.1 everything works as expected

 Do you downgrade the modem firmware, or NCS?

Which NCS version are you using  (what tag/commit are you on in the nrf folder)?

Is this from your own code? Are you able to run one of our samples, e.g. asset_tracker or mqtt_simple?

Best regards,

Didrik

[AlexVM]

Hello Didrik,

thank you for your response.

1. The only difference between the working and non-working code is the modem firmware: When I use nrf Connect v3.3.0 to programm the (old) modem-firmware (mfw_nrf9160_1.0.1.zip) everything works. If I do the same with mfw_nrf9160_1.1.0.zip the error in getaddrinfo  appears. I did not modify anything else (ncs or code).

2. the NCS/nrf is head:

$ git log -1
commit 31936f7b0cd40ca23e462dc2e2b612150e1ca93e (HEAD -> master, origin/master)

3. it is in our own code, I will check it tomorrow with asset_tracker or mqtt_simple as well.

Regards,

Alex

[Didrik Rokhaug]

Hi.

Did you test with the asset_tracker of mqtt_simple?

Did they work?

Best regards,

Didrik

[AlexVM]

Hello Didrik,
Sorry, I didn't have time yet. I will do the testint this afternoon and will let you know asap when I have done the test.

Regards,
Alex

[AlexVM]

Hello Didrik,

I have now tested it with asset_tracker. And there it works with the newModem- FW.

I have further analyzed the problem and found the following: The problem seems to be that in my code I call getaddrinfo once before LTE is connected to the network. All subsequent calls to getaddrinfo (even when connected to LTE) where then unsuccessful - With the older modem-fw this was not a problem.

If I wait in the code to make the first call to getaddrinfo until LTE is connected (+CEREG=1), everything works.

Regards,
Alex