Is it possible to use System.Text.Json with NewLineDelimitedMessageHandler?

[Manuel (mmoraga)]

using vs-streamjsonrpc v.2.16.36

I'm trying to replace use of Newtonsoft.Json with System.Text.Json, but supplying SystemTextJsonFormatter to the NewLineDelimitedMessageHandler just throws the NotSupportedException

var messageHandler = new NewLineDelimitedMessageHandler(stream, stream, new SystemTextJsonFormatter());

I see this comment in the source code of NewLineDelimitedMessageHandler:

if (this.Formatter is IJsonRpcFormatterTracingCallbacks)
        {
            // Such a formatter requires that we make their own written bytes available back to them for logging purposes.
            // We haven't implemented support for such, and the JsonMessageFormatter doesn't need it, so no need to.
            throw new NotSupportedException("Formatters that implement " + nameof(IJsonRpcFormatterTracingCallbacks) + " are not supported. Try using " + nameof(JsonMessageFormatter) + ".");
        }

Are you planning to add this support in the future? Or is there some sort of workaround? I don't understand why HeaderDelimitedMessageHandler would be supported but not NewLineDelimitedMessageHandler.

[Andrew Arnott (AArnott)]

We had no plans. But it looks easy enough to enhance. #962

[Manuel (mmoraga)]

Thank you!