[Bug] subscription request sends connection_init twice, once without connectionParams

[adrian-skybaker]

I have a server implementing the graphql-ws protocol that is enforcing a JWT is present in the connection_init payload under connectionParams.token, as per enisdenjo/graphql-ws#263 .

In Apollo Studio I can add this token to the list of headers in the connection settings, with the expectation these are added to connectionParams sent with the subscription.

What I observe is two separate connection_init requests are made, one without the token and one with. If I reject the one without the token, the second connection_init request is not made, and the subscription fails. If I allow the first connection to occur (by returning connection_ack), the second one with the correct payload proceeds and the subscription succeeds.

I would expect a single connection_init request to be made with the headers present. The current behaviour means that a websocket API that requires authentication as part of connection_init is not useable from Apollo Studio.