Apollo GraphQL with Vertx Subscription failed - vert.x

Question

I'm running Hasura GraphQL on docker instance(window machine) exposed at
http://192.168.99.100:8080/v1/graphql
I want to perform subscription in my verticle but getting the following exception:
com.apollographql.apollo.exception.ApolloNetworkException: Subscription failed
at com.apollographql.apollo.internal.RealApolloSubscriptionCall$SubscriptionManagerCallback.onNetworkError(RealApolloSubscriptionCall.java:246)
at com.apollographql.apollo.internal.subscription.RealSubscriptionManager$SubscriptionRecord.notifyOnNetworkError(RealSubscriptionManager.java:524)
at com.apollographql.apollo.internal.subscription.RealSubscriptionManager.onTransportFailure(RealSubscriptionManager.java:296)
at com.apollographql.apollo.internal.subscription.RealSubscriptionManager$SubscriptionTransportCallback$2.run(RealSubscriptionManager.java:556)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:170)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
Here's my sample code for apollo graphQL client:
public class MyFirstVerticle extends AbstractVerticle {
#Override
public void start(Future<Void> fut) {
OkHttpClient okHttp = new OkHttpClient().newBuilder().build();
ApolloClient subscribe = ApolloClient.builder()
.serverUrl("http://192.168.99.100:8080/v1/graphql")
.subscriptionTransportFactory(new WebSocketSubscriptionTransport.Factory(
"wss://192.168.99.100:8080/v1/graphql", okHttp))
.build();
subscribe.subscribe(new MySubscription(1)).execute(new ApolloSubscriptionCall.Callback<Optional<MySubscription.Data>>() {
.....
....

Answer 1

I found the solution, apparently it has to do with the type of connection you make. Im not an expert of this but, have you tried change wss to http?
:-)