Unable to reload page via cogctl

[WoeMat]

I'm using cog with an Raspberry CM3 to display a GUI. The GUI itself is a single page web application and every time I am changing something on the website and loading it onto the CM3 the changes don't appear on the screen.
I think it is all about the caching of the browser so I tryed to start cog like this.

cog --platform=fdo --enable-offline-web-application-cache=false --enable-page-cache=false http://127.0.0.1

but still changes are not displayed.
I alos tried to reload by using cogctl but than this error occured.

(cogctl:6293): GLib-GIO-CRITICAL **: 09:23:05.575: g_dbus_connection_call_sync_internal: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Cannot autolaunch D-Bus without X11 $DISPLAY

Is the only way to reload the page cogctl or can I do something else to see my changes be displayed?

In this Setup I am using
Weston 9.0.0
cog 0.8.1 (WPE WebKit 2.30.6)

Thanks

[aperezdc]

@WoeMat Is the environment variable DBUS_SESSION_BUS_ADDRESS defined to a suitable value? You can check which value the cog process is using with this command:

xargs -L1 -0 echo < /proc/$(pidof cog)/environ | grep '^DBUS_'

Then you should be able to use:

export DBUS_SESSION_BUS_ADDRESS=<value found above>
cogctl reload

If you have built Cog with the option to expose the D-Bus interface in the system bus, you need to pass --system to the command:

cogctl --system reload

[WoeMat]

Ok, that seems to be the Problem. There is no DBUS Address in
/proc/$(pidof cog)/environ

[WoeMat]

@aperezdc When I try your second command I get this:

# cogctl --system reload
GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name "com.igalia.Cog" does not exist

[AminSahebi]

Hi @aperezdc

I am getting the above error in terms of D-Bus error but with the following command "cogctl --system reload" and I guess this is related to the build procedure, my build environment is yocto and my target is an embedded device, is it necessary to build the cog with a specific argument to add this option? I think there is something missing here with the cog build procedure and D-Bus!
bw I get nothing by issuing the following command:

xargs -L1 -0 echo < /proc/$(pidof cog)/environ | grep '^DBUS_'

I appreciate any advice,
Thanks

[aperezdc]

If you are looking into using the system bus, you need to build with the cog_dbus_control option configured accordingly. Note that it is strongly recommended to run Cog as a regular, unprivileged user, so you may want to also set cog_dbus_system_owner option to allow some user other than root to own the well-known name in the system bus:

meson setup builddir -Dcog_dbus_control=system -Dcog_dbus_system_owner=coguser ...

For people using Yocto, the build recipe has a PACKAGECONFIG option that can be set, so I believe adding something like this in your local.conf file should work:

PACKAGECONFIG:pn-cog:append = " dbus"
COG_DBUS_OWN_USER = "weston"

[AminSahebi]

Thanks Dear Adrian,

I have been struggling a lot with the yocto build and the system bus to make the Cog browser work within the system bus session, after all, I faced the following error:

(cogctl:3570): GLib-GIO-CRITICAL **: 15:07:24.635: g_dbus_connection_call_sync_internal: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Error spawning command line ?dbus-launch --autolaunch=ec5029f6d7284741bdcaf7c8d11e3b23 --binary-syntax --close-stderr?: Child process exited with code 1

I executed the Cog and Cogctl as follows. (Apparently, the control interface through dbus doesn't work which is strange.)

XDG_RUNTIME_DIR=/tmp DBUS_SYSTEM_BUS_ADDRESS=unix:path=/run/dbus/system_bus_socket G_MESSAGES_DEBUG=Cog-DRM cog --platform=drm --platform-params=renderer=gles --gapplication-app-id=com.example.Cog1 www.yahoo.com

I opened the dbug messages within G_MESSAGES_DEBUG=Cog-DRM and named an interface for each run like --gapplication-app-id=com.example.Cog1

and trying to control via cogctl for this --appid=com.example.Cog1

XDG_RUNTIME_DIR=/tmp DBUS_SYSTEM_BUS_ADDRESS=unix:path=/run/dbus/system_bus_socket cogctl -A com.example.Cog1 quit

And finally, the following error happens:

(cogctl:3570): GLib-GIO-CRITICAL **: 15:07:24.635: g_dbus_connection_call_sync_internal: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Error spawning command line ?dbus-launch --autolaunch=ec5029f6d7284741bdcaf7c8d11e3b23 --binary-syntax --close-stderr?: Child process exited with code 1

PS1: I don't see any dbus message on systemctl status (or journalctl -u ) logs when I run Cog as a service,

Acquired D-Bus well-known name com.igalia.Cog

PS2: The Yocto build procedure creates the correct "com.igalia.Cog.conf" file and is located in /etc/dbus-1/system.d on my target.

my local.conf file is also attached,

Any advice is highly appreciated,
local.conf.txt

[AminSahebi]

I solved this issue, It was mainly some mistake on yocto recipe configuration.