My computer is behind a proxy and i have set the global proxy values in /etc/sysconfig/proxy but in the /var/log/messages i see the following message continuously. The check/phone home is happening every 5 seconds as monitored in the Firewall.
gnome-software[14402]: updates-shell: failed to get upgrades: [*/*/*/opensuse-distro-upgrade/*] Failed to download ‘https://get.opensuse.org/api/v0/distributions.json’: Unknown Error: Could not connect to get.opensuse.org: Socket I/O timed out
Question is, where is this defined in gnome-software (i am not able to find it) and how do i either deactivate this check/provide the proxy value to this request.
The message comes from the opensuse-distro-upgrade plugin. The URL is hardcoded.
You can try setting the environment variable GNOME_SOFTWARE_PLUGINS_BLOCKLIST. I am not sure about the exact content, but I assume it should be plugin name (opensuse-distro-upgrade) in this case. But keep in mind that this variable is intended as debug tool only.
This plugin is using standard gvfs functionality. Unfortunately, I could not find any user level documentation how to configure proxy for gvfs. You could try setting proxy in GNOME Settings application but it may not be enough. If it does not work you should file openSUSE bug report (the plugin obviously comes from SUSE).