code: function (i)
      {
          var req = this._requests[i];
          if (req.dead === null) {
              req.dead = new Date();
          }
  
          this._processRequest(i);
      }
docs: PrivateFunction: _restartRequest
  _Private_ function to restart a request that is presumed dead.
  
  Parameters:
  (Integer) i - The index of the request in the queue.