On the WebSocket connection, between the App Object and the App Service, a PbxSignal message with an presence_notify facility must be sent. It will be forwarded to the myApps client by the PBX, even if no App is running in the client.

Required Steps:

1) Enable App Service for presence Subscriptions

On a C++ App Service:

void ApplicationSession::AppWebsocketAppInfo(const char * app, class json_io & msg, word base)
{
msg.add_bool(base, "presence", true);
}

On JavaScript App Service:

It is not possible at the moment. I could be added in the config.json on later release.

The myApps cleint will get following indication, if presence is enabled for the App Service:

{
"mt":"UpdateAppsInfo",
"app":{
"name":"chat",
"title":"Chat",
"url":"../../APPS/chat/chat",
"inline":true,
"info":{
"apis":{
"com.innovaphone.chat":{

},
"com.innovaphone.notificationhandler":{

}
},
"wake":[
"chat"
],
"presence":true
}

2) Handle incoming presence_subscribe call on the App Service:

new PbxApi("PbxSignal").onconnected(function (conn) {
log("Badge: new connection with PbxSignal support");
connections.push(conn);

conn.send(JSON.stringify({"api": "PbxSignal", "mt": "Register", "flags": "NO_MEDIA_CALL"}));

conn.onmessage(function (msg) {
var obj = JSON.parse(msg);
log("Badge: rcv" + msg);

if (obj.mt == "RegisterResult") {
// handele RegisterResult
}

if (obj.mt == "Signaling") {
// handle incoming presence_subscribe call => callid required later for sending badge notifications
}

});
});

3) Send presence_notfy facility into subscription call:
function updateBadge(count,callid) {

var msg = { "api": "PbxSignal", "mt": "Signaling", "call": callid, "src": "badge", "sig": { "type": "facility", "fty": [{ "type": "presence_notify", "status": "open", "note": "#badge:" + count, "contact": "app:" }] } };

connections.filter(function (v) { return v.api === "PbxSignal"; })[0]
.send(JSON.stringify(msg));
}

In the attached diagram I have marked the path with pink color.

With this fix you are able to add a property "presence":true in config.json in the "apis"/<your start html> object to indicate that you want to receive presence subscription calls on the websocket connection identified by the start html.

The 13r2 SDK documentation is also updated.