An HTTP response where the response body is received asynchronously after the headers have been received.

class StreamedResponse extends BaseResponse {
 /// The stream from which the response body data can be read. This should
 /// always be a single-subscription stream.
 final ByteStream stream;

 /// Creates a new streaming response. [stream] should be a single-subscription
 /// stream.
 StreamedResponse(
     Stream<List<int>> stream,
     int statusCode,
     int contentLength,
     {BaseRequest request,
      Map<String, String> headers: const {},
      bool isRedirect: false,
      bool persistentConnection: true,
      String reasonPhrase})
   : super(
       statusCode,
       contentLength,
       request: request,
       headers: headers,
       isRedirect: isRedirect,
       persistentConnection: persistentConnection,
       reasonPhrase: reasonPhrase),
     this.stream = toByteStream(stream);
}