After subscribing, no events handled, even though in React and websocket.org, it seems that the parse-server is working.

[rodsfreitas]

After lots of headaches, trials, errors and studying the examples, I couldn't receive any event on iOS after subscribing to Parse LiveQuery.

There's another thread on stack overflow with the same problem: http://stackoverflow.com/questions/37012451/livequery-not-responding

and now mine:
http://stackoverflow.com/questions/37381388/parse-livequery-subscription-doesnt-receive-any-events

I have configured a parse-server running LiveQuery on Amazon EC2 instance, on port 9091, with no proxy, firewall configurations made. It seems to be working fine, because we tested on React and using http://www.websocket.org/echo.html, telling that the connection was successful.

However on iOS, I couldn't make LiveQuery work, even though the handleSubscribe seems to be ok.

I've created a simple viewController to try it:

    import UIKit
    import Parse
    import ParseLiveQuery

    class StatsViewController: UIViewController {
        //MARK: - Outlets
        @IBAction func insertMessage(sender: AnyObject) {
            let message = Message();
            message.author = PFUser.currentUser()
            message.authorName = message.author?.username
            message.text = "Hello: \(NSDate())"
            message.roomName = "Test";

            message.saveInBackground();
        }

        //MARK: - Variables
        var myQuery: PFQuery {
            return (Message.query()?
                .whereKey("roomName", equalTo: "Test")
                .orderByAscending("createdAt"))!
        }

        var subscription: Subscription<Message>? = nil

        //MARK: - Lifecycle
        override func viewDidLoad() {
            super.viewDidLoad()

            //Registers the subclass
            Message.registerSubclass();
        }

        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
            // Dispose of any resources that can be recreated.
        }

        override func viewDidAppear(animated: Bool) {

            //1) queries for messages, working.
            myQuery.findObjectsInBackground().continueWithBlock() { res in
                for msg in ((res.result as? [Message]))! {
                    print(msg);
                }
                return nil
            }

            //2) try to subscribe and receive any information from the server
            subscription = myQuery.subscribe()

            subscription!.handleEvent { query, event in
                // Handle event
                print("any event, please?"); //no events handled after creating a new message
            }

            subscription!.handle(Event.Created) { query, object in
                // Called whenever an object was created
                print("any creation, please?"); //no events handled after creating a new message
            }

            subscription!.handleError { (query, err) in
                print("any error, please?"); //no errors handled
            }

            subscription!.handleSubscribe { query in
                print("subscribed")
            }
        }

    }

I also tried the subscription using the code in the parse example, like in

func subscribeToUpdates() {
    subscription = liveQueryClient
        .subscribe(messagesQuery)
        .handle(Event.Created) { _, message in
            self.printMessage(message)
    }
}

some information

• subscriptions.handleSubscribe: prints "subscribed", but there's no way to check if it was successful
• after inserting a new message or deleting a record on parse-dashboard, there's no event to be handled on iOS
• there's no error or log in the parse-server
• running parse-server 2.2.10 at port 9091

Is there any mistake or something missing in the subscription process?

Thanks!

[FredvanRijswijk]

I made a simpler version of the chatroom example and your example, I tested it and works fine https://github.com/FredvanRijswijk/ParseLiveQuery works only if you add a message for now

[tsanthosh]

Have the same issue. subscription.handleSubscribe prints "Subscribed" but couldn't get the events fired.