AWS IoT FOTA Error nRF7002DK: Failed to create socket, err 12

[zciwor]

After a lot of trial and error, I finally have an AWS IoT build running on my 7002dk. I am running the sample from the main branch of nRF Connect building with the command line.

west build -b nrf7002dk_nrf5340_cpuapp
west flash

My dev kit is successfully connecting to the broker and sending shadow updates. However, I need to make a proof of concept FOTA. Following the guide, I am able to get an update job started over https.

However, I am getting an error saying: download_client: Failed to create socket, err 12.

I am not sure where to look to start debugging. What am I missing?

[00:01:36.774,902] <inf> aws_iot_sample: AWS_IOT_EVT_PUBACK, message ID: 21781
[00:01:36.775,207] <inf> download_client: Downloading: app_update.bin [0]
[00:01:36.775,268] <inf> aws_iot_sample: AWS_IOT_EVT_FOTA_START
[00:01:36.814,697] <err> download_client: Failed to create socket, err 12
[00:01:36.814,727] <err> fota_download: Download client error
[00:01:36.814,758] <err> aws_fota: FOTA_DOWNLOAD_EVT_ERROR
[00:01:36.814,788] <err> aws_iot: AWS_FOTA_EVT_ERROR
[00:01:36.814,788] <inf> aws_iot_sample: AWS_IOT_EVT_FOTA_ERROR
[00:01:36.966,064] <inf> aws_iot_sample: AWS_IOT_EVT_PUBACK, message ID: 26704
[00:01:37.106,048] <inf> aws_iot_sample: AWS_IOT_EVT_PUBACK, message ID: 31885

Maybe some relevant config settings:

CONFIG_AWS_IOT=y
CONFIG_AWS_IOT_CLIENT_ID_STATIC="thing_name"
CONFIG_AWS_IOT_BROKER_HOST_NAME="aws_endpoint"
CONFIG_AWS_IOT_SEC_TAG=201
CONFIG_AWS_FOTA_DOWNLOAD_SECURITY_TAG=401

CONFIG_WIFI_CREDENTIALS_STATIC=y
CONFIG_WIFI_CREDENTIALS_STATIC_SSID="ssid"
CONFIG_WIFI_CREDENTIALS_STATIC_PASSWORD="pass"

[Simonr]

Hi

Errno 2 refers to there being no such file directory or entry, so I guess it's referring to either of the parameters for the connect() function aren't found in your project: 

err = connect(dl->fd, &dl->remote_addr, addrlen);

Double check what these values actually return or what directories/entries they are pulled from to see if that helps you at all.

Best regards,

Simon

[zciwor]

Hi Simon,
I include the CONFIG_DOWNLOAD_CLIENT_LOG_LEVEL_DBG=y configuration option in my prj.conf file. Here is what the download_client is logging now:

[00:01:29.936,431] <inf> aws_iot_sample: AWS_IOT_EVT_PUBACK, message ID: 60158
[00:01:29.937,347] <dbg> download_client: set_state: state = 1
[00:01:29.937,377] <inf> download_client: Downloading: app_update.bin [0]
[00:01:29.937,438] <inf> aws_iot_sample: AWS_IOT_EVT_FOTA_START
[00:01:30.241,943] <dbg> download_client: client_connect: Protocol not specified, defaulting to HTTP(S)
[00:01:30.242,004] <dbg> download_client: client_connect: Port not specified, using default: 443
[00:01:30.242,004] <dbg> download_client: client_connect: family: 1, type: 1, proto: 258
[00:01:30.242,614] <inf> download_client: Setting up TLS credentials, sec tag count 1
[00:01:30.242,736] <inf> download_client: Connecting to silver-firmware-ota.s3.us-east-1.amazonaws.com
[00:01:30.242,767] <inf> download_client: fd 9, addrlen 8, fam IPv4, port 443
[00:01:30.336,761] <err> download_client: Unable to connect, errno 2
[00:01:30.338,012] <dbg> download_client: set_state: state = 0
[00:01:30.338,012] <inf> aws_iot_sample: AWS_IOT_EVT_FOTA_DL_PROGRESS, (100%)
[00:01:30.343,750] <err> fota_download: Download client error
[00:01:30.495,941] <inf> aws_iot_sample: AWS_IOT_EVT_PUBACK, message ID: 11081
[00:01:30.497,497] <inf> aws_iot_sample: AWS_IOT_EVT_FOTA_DONE
[00:01:30.505,096] <inf> aws_iot_sample: AWS_IOT_EVT_DISCONNECTED
[00:01:30.505,126] <wrn> aws_iot_sample: Unexpected FOTA image type

Does this add any clarity? Am I missing a configuration somewhere? Is FOTA working currently with the latest aws_iot sample?