Mongoose webserver: no WebSocket frames sent to browser during update

[Antoine Duteyrat]

swupdate 2024.05, meta-swupdate scarthgap, i.MX8, sysvinit, initrd

swupdate-progress receives progress events correctly via /tmp/swupdateprog

/proc/net/unix shows LISTENING + CONNECTED on swupdateprog → broadcast_progress_thread is connected

But zero WebSocket frames are sent to the browser during update

installed-directly = true in sw-description

[Stefano Babic]

Hi Antoine,

On 6/1/26 11:05, Antoine Duteyrat wrote:
> swupdate 2024.05, meta-swupdate scarthgap, i.MX8, sysvinit, initrd
>

scarthgap is maintained, it receives update for SWUpdate, you can simply
update to 2026.05.

> swupdate-progress receives progress events correctly via /tmp/swupdateprog
>
> /proc/net/unix shows LISTENING + CONNECTED on swupdateprog →
> broadcast_progress_thread is connected
>
> But zero WebSocket frames are sent to the browser during update

Never heard about an issue even with this release, but sure you can have
some setup issue, spoecially if you run SWUpdate behind a reverse proxy
(nginx). Have you tested by connecting directly to SWUpdate's webserver ?

Best regards,
Stefano Babic

--
_______________________________________________________________________
Nabla Software Engineering GmbH
Hirschstr. 111A | 86156 Augsburg | Tel: +49 821 45592596
Geschäftsführer : Stefano Babic | HRB 40522 Augsburg
E-Mail: sba...@nabladev.com

[Antoine Duteyrat]

Hi Stefano,

Sorry I wrote my first message quickly and forgot about greetings! I hope you are doing well.

I will upgrade the preferred version, I thought 2024.05 was the last one supported for scarthgap, thanks!

And indeed I had an issue with my target interfaces and was missing a simple loopback iface, I didn’t even think about my image missing it !

For reference, I published my message before seeing this thread : https://groups.google.com/g/swupdate/c/vgoIwcnWrSU

Thank you Stefano,

Best regards,

Antoine Duteyrat

Le 1 juin 2026 à 15:39, Stefano Babic <stefan...@swupdate.org> a écrit :

Hi Antoine,