Cannot set content-type header in initial request establishing a GraphQL websocket connection about graphql-client HOT 6 CLOSED

I'm trying to use this library for GraphQL subscriptions but getting the following error "Connection closed by the server".

After more investigating, I find out that the initial request /graphql does not contain content-type header that is seem mandatory for the server I'm connecting to. I believe this is a reason of this error.
Could you please advice?

Thanks a lot in advance

from graphql-client.

The Content-Type header is irrelevant for a websocket connection (see also this stackoverflow thread).

Maybe your server needs some form of authentication?

from graphql-client.

Thank you so much on a response provided. Yes, you're right, the issue related to missing authentication:

However, I have set it via ConfigureWebsocketOptions and also via HttpClient as following:

But still getting this error.

Could you please advice?

Thank you in advance

from graphql-client.

Are u sure that is the authorization header your server expects? I've seen lots of different authorization variants, especially with GraphQL subscriptions (it's a bit like the wild west there...)

Please doublecheck the docs of your server how authentication/authorization with subscriptions work!

from graphql-client.

Yes, the server expects a bearer token.

It seems like an issue is caused by https redirection middleware (authentication header is not preserved on redirects). So, when I changed from ws:// to wss:// it starts to work.

from graphql-client.

Yeah, here we go: https://github.com/dotnet/runtime/blob/main/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/RedirectHandler.cs#L53-L54

from graphql-client.