You can now use System.IO.Pipelines API requests to read and write text response body.
HttpRequest.BodyReader property provides a PipeReader, may be used to read the body of the request;
HttpResponse.BodyWriter property provides a PipeWriter, can be used to write the response body.
HttpRequest.BodyReader similar composition HttpRequest.Body stream;
HttpResponse.BodyWriter HttpResponse.Body stream was similar.