You don't use https://xmpp.org/extensions/xep-0357.html for Push?

@licaon-kter Where XEP-0357 covers VoIP? Siskin users custom extensions for push (including encrypted push notifications) to make VoIP work.

@uzairsabir When you receive a call from CallKit your app should be restored and you need to wait until it connects to XMPP server as this is required to establish VoIP connection.

@hantu85 I thought it's that old Apple VOIP push that other apps were abusing before iOS13, ignore my ignorance as needed. :)

@hantu85 "app should be restored and you need to wait until it connects to XMPP server as this is required to establish VoIP connection" How ? I am using the following code. forget the encryption and decryption for now:

func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void) {

// RTCInitializeSSL(); // AccountSettings.initialize(); // XmppService.instance.initialize(); // CallManager.initializeCallManager();

    print(payload.dictionaryPayload)

    let json = JSON(payload.dictionaryPayload["acme2"]!)

    if let jsonArrayData = json.stringValue.data(using: .utf8){


    if let payload = try? JSONDecoder().decode(Welcome.self, from: jsonArrayData) {


        let _rid = payload[0].rid.replacingOccurrences(of: "\"", with: "")
        let _cid = payload[0].cid.replacingOccurrences(of: "\"", with: "")
        let _sid = payload[0].sid.replacingOccurrences(of: "\"", with: "")

        let account = BareJID(_rid)

        if let client = XmppService.instance.getClient(for: account) {

            let session = JingleManager.instance.open(for: client, with: JID(_cid), sid: _sid, role: .responder, initiationType: .message);

            let call = Call(account: account, with: JID(_cid).bareJid, sid: _sid, direction: .incoming, media: [.audio]);
            
            
            
           // call.session = session

            //print("Uzair_call_active_\(call.uuid)")
            //self.activeCalls.removeValue(forKey: call.key);

            self.reportIncomingCall(call, completionHandler: { result in
                switch result {
                case .success(_):
                    break;
                case .failure(_):
                    session.decline();
                }
                completion();
            });

        }else {
            self.endCall(on: account, with: JID(_cid).bareJid, sid: _sid, completionHandler: {
                print("ended call");
            })
        }

        completion();

        return;


    }

    }

         let uuid = UUID();
                let update = CXCallUpdate();
                update.remoteHandle = CXHandle(type: .generic, value: "Unknown");
                provider.reportNewIncomingCall(with: uuid, update: update, completion: { error in
                    if error == nil {
                        self.provider.reportCall(with: uuid, endedAt: Date(), reason: .remoteEnded);
                    }
                    completion();
                })

  
    
  
    
}

@licaon-kter Apple has a few different kinds of pushes. Siskin uses "normal" push with high priority for messages and CallKit for VoIP.

XEP-0357 covers only how to send push to the component which will notify device, but does not specify a way to pass other data than sender jid, message body, or unread counter. Custom payload for sending other things (ie. kind of a VoIP call audio or a video) is not covered and required a separate extension.

@uzairsabir When your app will be notified from CallKit that "user accepted to call", you need to "wait" for connection (XMPPClient for this account) to be in a connected state.

i have tried the following code when "cancel call button is pressed from callkit" after receiving VOIP when app is killed. But unable to make connection please suggest something.

func reject() {

// DispatchQueue.main.async { // // guard XmppService.instance.getClient(for: self.account)?.state == .connected() else { // // return; // } // // if let client = XmppService.instance.getClient(for: self.account) { // // let _session = JingleManager.instance.open(for: client, with: self.jid, sid: self.sid, role: .responder, initiationType: .message); // // self.session = _session // // } // // } // guard let session = self.session else { self.reset(); return; }

    session.decline();
    self.reset();   

}

You are not "waiting for reconnection", you just check if it is currently reconnected.

@hantu85 how to reconnect would you like to share the code ?

@hantu85 resolved by adding this code in my callkit delegate,

XmppService.instance.reconnect(client: client)

Thank you for your support.