Hasura websocket ping before connection_ack

When I try to connect to a Hasura server with websockets I get the error message "Exception has occurred: GraphQLClientInvalidMessageFormat".
The reason fo that is that Hasura sends a "ping" before "connection_ack".
I have made a pull request with a working patch 
https://github.com/mirumee/ariadne-codegen/pull/289

Maybe the timeout in the patch is unnecessary, if so please remove. 