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]

Hello Willem, 

What kind of SIM is the Telenor SIM? Will need to discuss internally as I'm not sure what causes this, and very strange in regards to it working with the UDP sample and not https_client and opposite with the iBasis SIM. 

[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