nRF9160 getaddrinfo returns error -2 with https_client with Telenor SIM

[Willem21]

Dear Sir/Madam,

Why do I get the error -2 on command "getaddrinfo" with the "https_client" with a "Telenor" SIM?
Below you find a modem trace of the failure and screenshot of wireshark capture.

The "https_client" example returns error -2 on command "getaddrinfo" with the  "Telenor" SIM
When changing the example to use a static IP the connect fails with error 116

The "https_client" example runs without errors with the "Ibasis" SIM
The "udp" example runs without errors with the "Telenor" SIM

4010.trace-2023-02-23T16-52-46.209Z.bin

With best regards,

Willem Jongsma

[Øyvind]

How did you configure your HTTPS_client sample? getaddrinfo error returns -2 which according to dns_resolve.h means

/** NAME or SERVICE is unknown */
DNS_EAI_NONAME = -2,

The modem also returns an illegal argument error. 

Please provide more information. 

Kind regards,
Øyvind

[Willem21]

Hello Øyvind,

The Telenor SIM is a nano SIM with APN “wlapn.com”.
The UDP example is using the de example defaults (static IP 8.8.8.8)
The HTTPS_client example is modified to use host name "test.websensys.eu" with TLS peer verification "NONE", the rest of the settings are default

In the mean time I tried the functions "nrf_getaddrinfo" and "nrf_setdnsaddr"
With the "Telenor" SIM both the functions "getaddrinfo" and "nrf_getaddrinfo" give the following result:
ERROR: getaddrinfo failed error:-2, errno: 0 (-2=DNS_EAI_NONAME)
When i set 8.8.8.8 as secondairy dns with "nrf_setdnsaddr" I get:
ERROR: getaddrinfo failed error:-11, errno: 116 (-11=DNS_EAI_SYSTEM, 116=ETIMEDOUT)

What illegal argument did the modem return?

nRF9160DK PCA10090 1.1.0
Modem firmware: mfw_nrf9160_1.3.4.zip
NRF Connect SDK V2.2.0

With best regards,

Willem

[Willem21]

Hello Øyvind,

After setting the Telenor APN the DNS resolve with getaddrinfo works.

I've set the APN by putting the following lines in the "prj.conf" file:
CONFIG_PDN=y
CONFIG_PDN_DEFAULTS_OVERRIDE=y
CONFIG_PDN_DEFAULT_APN="wlapn.com"

This case can be closed.

With best regards,

Willem