Cannot apply fragment on subscription

[stevefan1999-personal]

This is a X-Issue from https://github.com/19majkel94/type-graphql/issues/159#issue-36454900, please read that issue first, because it seems like graphql-subscriptions is the one to blame.

[grantwwu]

Can you provide a minimal reproducing example? I don't know why apollo-bot said there was a reproduction.

[elderapo]

Here is a minimal reproducible repo. For some reason for anonymous subscriptions root value passed to subscriptions resolver is undefined.

It's working just fine with named subscriptions.

[elderapo]

Ok, so a few observations:

• Seems like this is not a bug in graphql-subscriptions package.
• graphql-playground client sends an http request instead of opening a new websocket connection if the subscription query is anonymous. If subscription query is named it always opens a new websocket connection.
• graphiql client always sends an http request. No matter if the subscription query is named or anonymous.
• Looks like this error happens when the client sends (as an http request) the subscription query that references a fragment.

Is even sending a subscription query as http request compliant with GraphQL specification? Any ideas where this issue should be forwarded to? apollo-server or graphql?