docs: private void processDelimiter()
      {
          assert (state == State.ACTIVE || state == State.WAITING_FOR_DELIMITER);
  
          if (state == State.ACTIVE) {
              state = State.DELIMITER_RECEIVED;
          }
          else {
              outpipe = null;
              sendPipeTermAck(peer);
              state = State.TERM_ACK_SENT;
          }
      }