SessionListener functionality

[michiyosony]

I don't see anything in the plugin with functionality akin to the SessionListener, or some way of being notified that another party has left a joined session/the session has been closed, etc. Am I overlooking it? If it does not currently exist, is it planned?

[vjrantal]

The only related functionality that exists is for the plugin user to be in control of who to let join into a session. You can see how the chat sample uses that functionality at AllJoyn-Cordova/cordova-chat-alljoyn@3585a19.

Having the functionality that the above-mentioned SessionListener provides is definitely a valid use case. As far as I know, no timeline exists for implementing it.

Before it gets supported by the plugin, I wonder would it be possible to do something in the app JavaScript layer? Setting the right kind of signal rules might allow you to be notified in these scenarios.

[michiyosony]

I will look into signal rules; thank you.

[vjrantal]

@michiyosony After looking into this a bit more, it seems like you can get at least certain signals to an app that hosts sessions. An example below adds a listener to a case when someone leaves your session.

bus.addListener([0, 1, 0, 17], 'uu', function (response) {
    // response could be looked at but contained only undefined values when I tested
});

The way I concluded to [0, 1, 0, 17] was that it was the 17th value in this list https://github.com/AllJoyn-Cordova/ajtcl/blob/RB14.12/src/aj_std.c#L130 that matches to !SessionLostWithReason >u >u.

Seems that you don't have to set the signal rule for these yourself, because I believe the ones found in aj_std.c are already registered for behind the scenes.

I am not sure if this helps you at all and I think we should keep this issue open until there is a well-documented way for plugin users to get session-related information.