quart

Should add a section to the docs for third-party examples and guides using Mangum

https://asgi.readthedocs.io/en/latest/specs/www.html#websocket-connection-scope

"subprotocols" key should be built from Sec-WebSocket-Protocol header value. Currently it's always empty.

        scope = {
            "type": "websocket",
            "headers": flatten_headers(headers),
            "path": path,
            "query_string": query_string_bytes,
            "root_path":

I am using Graphene with the Flask graphql integration. Graphql core supports an argument in its execute() function called execution_context_class, among other things as well. I would like to pass a custom ExecutionContext class but it doesn't look like there is a way to do this here in the Flask server integration (and probably the other ones as well).

My use case is that I'd like to use