anchor.diff:      if (e == null) {
         // Indicate connection close to the HTTP parser.
         _httpParser.connectionClosed();
  -      _closing = true;
       }
     }
   
  
positive.code:   }
  
    bool _write(List<int> data, [bool copyBuffer = false]) {
      if (!_error) {
        return _socket.outputStream.write(data, copyBuffer);
      }
    }
  
    bool _writeFrom(List<int> buffer, [int offset, int len]) {
      if (!_error) {
        return _socket.outputStream.writeFrom(buffer, offset, len);
      }
    }
  
negative.code:   }
  
    void _onClosed() {
      _closing = true;
      _onConnectionClosed(null);
    }
  
  