Socket onError: Expected HTTP 101 response but was '502 Bad Gateway'

[ashmitbhui]

ParseLiveQueryClient parseLiveQueryClient = null;
        try {
            parseLiveQueryClient = ParseLiveQueryClient.Factory.getClient(new URI("wss://APP-NAME.back4app.io"));
        } catch (URISyntaxException e) {
            e.printStackTrace();
        }
        ParseQuery<ParseObject> parseQuery = ParseQuery.getQuery("Orders");
        SubscriptionHandling<ParseObject> subscriptionHandling = parseLiveQueryClient.subscribe(parseQuery);

        subscriptionHandling.handleEvents(new SubscriptionHandling.HandleEventsCallback<ParseObject>() {
            @Override
            public void onEvents(ParseQuery<ParseObject> query, SubscriptionHandling.Event event, ParseObject object) {
                Toast.makeText(HomeScreen.this, "Subscribed!", Toast.LENGTH_SHORT).show();
            }
        });

Everytime i try to connect i get Socket OnError:

ParseLiveQueryClient: Socket onError java.net.ProtocolException: Expected HTTP 101 response but was '502 Bad Gateway' at okhttp3.internal.ws.RealWebSocket.checkResponse(RealWebSocket.java:216) at okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:183) at okhttp3.RealCall$AsyncCall.execute(RealCall.java:141) at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:818)

[mmimeault]

Hello ashmitbhui, thanks for using LiveQuery in your projects.

Could you validate that your device can reach the server properly. Make sure ssl is supported, try with ws first intead of wss.

A 502 Bad Gateway is normally a problem between the client and the server. Validate your server configuration.

Thanks

[ashmitbhui]

Hi, I figured out the problem, my URL had uppercase characters because of which I was not able to connect to the server.