code: public final ChannelFuture writeReset(int id, int streamId, Http2Error error) {
  
          if (closed) {
              return newClosedSessionFuture();
          }
  
          return doWriteReset(id, streamId, error);
      }
docs: Resets the specified stream. If the session protocol does not support multiplexing or the connection
  is in unrecoverable state, the connection will be closed. For example, in an HTTP/1 connection, this
  will lead the connection to be closed immediately or after the previous requests that are not reset.