Hi I need to add a JWT header to my GraphQL subscription doe kotlinlang #apollo-kotlin

Hi, I need to add a JWT header to my GraphQL subscription - does anyone know how to do this with apollo-android? (and somehow support refreshing jwts as well)

mbonnin

05/27/2021, 6:59 AM

You can use

ApolloClient.subscriptionConnectionParams()

to send additional information in the

init

message

Or if you need more control over it, you'll most likely have to implement your own

OperationMessageSerializer

james

05/28/2021, 2:05 AM

Thanks for getting back to me

My subscription fails with

java.io.EOFException

and no other details in

@Override
    public void onNetworkError(@NotNull Throwable t) {
      Callback<T> callback = this.originalCallback;
      if (callback != null) {
        callback.onFailure(new ApolloNetworkException("Subscription failed", t));
      }
      terminate();
    }

After a couple of minutes. Any idea what could cause this?

mbonnin

05/28/2021, 8:15 AM

Right, I've seen this as well. Not 100% sure what's the root cause. Most probably your backend requires a ping of some sort.

rocketraman

06/01/2021, 8:56 PM

The

ApolloRequestInterceptor

does not work with subscriptions @mbonnin?

mbonnin

06/01/2021, 9:07 PM

@rocketraman it should : https://github.com/apollographql/apollo-android/blob/main/apollo-runtime-kotlin/sr[…]Main/kotlin/com/apollographql/apollo/internal/RealApolloCall.kt

👍 1

rocketraman

06/01/2021, 9:14 PM

That sounds like a better approach then... use a standard interceptor like the built-in bearer token interceptor or a custom variation, and it should work for both regular calls and subscriptions.

👍 1

james

06/01/2021, 10:38 PM

Yeah the EOF was indeed a backend required ping. I was having issues using the Apollo interceptor for JWT behavior, but will take another look. Thanks both.

👍 1

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