Utf8Decoder+JsonDecoder usage with TransportWebSocketLink

[orestesgaolin]

Noticed that HttpLink got migrated to Utf8Decoder +JsonDecoder. Could we get similar improvements in TransportWebSocketLink here? I would love to see the example usage of the new approach with TransportWebSocketLink.

[knaeckeKami]

Hi!

It looks like this is impossible without changing the implementation of Dart SDKs Websocket or providing another implementation for web_socket_channel.

The underlying WebSocket already decodes the bytes to a String:
https://github.com/dart-lang/sdk/blob/8a7cde38b204b40d7954de85d5fa4be1abd952b3/sdk/lib/_http/websocket_impl.dart#L332

So there's no opportunity to decode both utf8 + json in one go.