import { Router } from 'meteor/iron:router';

Router.route('/testroute').post(function(){
  var response;
  if(this.request.body.userName === undefined || this.request.body.userPassword === undefined) {
      response = {
          "error" : true,
          "message" : "invalid data"
      };
  } else {
      console.log(" Request Body is : ",this.request.body);
      response = {
          "error" : false,
          "message" : "User added."
      }
  }
  this.response.setHeader('Content-Type','application/json');
  this.response.end(JSON.stringify(response));
  });

Exception in callback of async function: TypeError: Cannot read property 'route' of undefined