download_client: Peer closed connection!

RE: download_client: Peer closed connection!

Praveen Deshmane — Wed, 17 Aug 2022 06:55:43 GMT

Hello Markus,

I have solved this problem by changing fragment size 2048 to 1024 in fota_download_start method

ret = fota_download_start(CONFIG_DOWNLOAD_HOST, CONFIG_DOWNLOAD_FILE, 42, 0, 1024);
if (ret != 0) {
	LOG_DBG("fota_download_start() failed: %d", ret);
}

prj.conf

# Download client
CONFIG_DOWNLOAD_CLIENT_STACK_SIZE=4096
CONFIG_DOWNLOAD_CLIENT_BUF_SIZE=2048
CONFIG_DOWNLOAD_CLIENT_HTTP_FRAG_SIZE_1024=y
CONFIG_DOWNLOAD_CLIENT_RANGE_REQUESTS=n
CONFIG_DOWNLOAD_CLIENT_LOG_LEVEL_DBG=y
CONFIG_DOWNLOAD_CLIENT_LOG_HEADERS=y

and by adding above configuration of download client in prj.conf

if fragment size is 2048

fragment + HTTP header = will be too big for the modem to receive.

reducing the fragment size to1024 solved my problem.

Thanks and Reagrds

Praveen Deshmane

RE: download_client: Peer closed connection!

Praveen Deshmane — Wed, 17 Aug 2022 01:58:10 GMT

Hello Markus,

Thank you for your time and reply.

Can you please tell me how to overcome this warning?

RE: download_client: Peer closed connection!

Albrecht Markus Schellenberger — Tue, 16 Aug 2022 07:37:14 GMT

Hello Praveen,

[quote user=""]Please help me in investing the issue. [/quote]

The modem has an internal TLS stack size limit of 2kB, see its release notes. I assume that this is the reason causing the socket error.

*** Limitations
***************
- TLS/DTLS
    ...
    - 2kB secure socket buffer size.

To confirm this, I would start with downloading files of smaller size.

Cheers,

Markus