how to find ActiveConnectionStateReason?

[tisauro]

Hello team

I am trying to get the StateReason of the active connection to return the feedback why the connection failed , I can see the Deactivated event but so far I have been unable to retrieve the StateReason, below a snapshot of my code.

Anyone who could point me the right direction please?

new_connection_path = await network_manager_settings.add_connection(connection_settings)
active_connection_path = await self.network_manager.activate_connection(
    new_connection_path,
    self._wifi_device,
    ap_path
)

async for path, data in DbusInterfaceCommonAsync.properties_changed.catch_anywhere(
        'org.freedesktop.NetworkManager'
):
    log.debug(f'path: {path}, data:{data}')
    if path == active_connection_path and 'State' in data[1]:
        state_val = data[1]['State'][1]
        state = ConnectionState(state_val)
        log.debug(f"Received state change for our connection: new state is {state.name}")

        if state == ConnectionState.ACTIVATED:
            log.info("Connection successfully activated.")

        if state == ConnectionState.DEACTIVATED:
            async for state, reason in ActiveConnection.state_changed.catch_anywhere(
                    'org.freedesktop.NetworkManager'
            ):
                log.debug(f'state: {state}, reason:{reason}')
            log.warning(f"Connection failed. Reason: {''}")

thank you

[igo95862]

Hello @tisauro

Have you tried async for x in ActiveConnection.state_changed.catch_anywhere('org.freedesktop.NetworkManager') instead of properties_changed?

https://python-sdbus-networkmanager.readthedocs.io/en/latest/other_interfaces.html#sdbus_async.networkmanager.NetworkManagerConnectionActiveInterfaceAsync.state_changed

[tisauro]

Thank you for the prompt response @igo95862

I did but didn't understand the values in the returned tuple:

/org/freedesktop/NetworkManager/ActiveConnection/43 state: (1, 0) 
/org/freedesktop/NetworkManager/ActiveConnection/43 state: (4, 3)

I am expecting (4, 10) (NM_ACTIVE_CONNECTION_STATE_REASON_LOGIN_FAILED= 10) because I was providing the wrong password. And that is the feedback I would like to provide to the enduser. What the reason why I am getting (4, 3)

[igo95862]

The (4, 3) are the enum values of ActiveConnectionState and ActiveConnectionStateReason. You can call the enum class on the values to transform them to a verbose enums for better logging.

>>> sdbus_async.networkmanager.enums.ActiveConnectionStateReason(3)
<ActiveConnectionStateReason.DEVICE_DISCONNECTED: 3>

[igo95862]

Are you using the VPN connection?

A quick search in NetworkManager source code results in NM_ACTIVE_CONNECTION_STATE_REASON_LOGIN_FAILED only being used in the VPN source code:

https://github.com/search?q=repo%3ANetworkManager%2FNetworkManager%20NM_ACTIVE_CONNECTION_STATE_REASON_LOGIN_FAILED&type=code

[igo95862]

There is also device state change signal which might hold the information you want: https://python-sdbus-networkmanager.readthedocs.io/en/latest/device_interfaces.html#sdbus_async.networkmanager.NetworkManagerDeviceInterfaceAsync.state_changed

[igo95862]

Also you might be interested in WPA_supplicants D-Bus API as it is the actual program that handles WiFi authentication. (unless you are using iwd backend): https://w1.fi/wpa_supplicant/devel/dbus.html

I believe NetworkManager delegates all WiFi authentication to it so it might not posses the actual reason why WiFi login fails.

[tisauro]

@igo95862 thank you again for the info all makes sense now. I will investigate all the above options.