node.js - How to await and return the result of a http.request(), so that multiple requests run serially? -

assume there function dorequest(options), supposed perform http request , uses http.request() that.

if dorequest() called in loop, want next request made after previous finished (serial execution, 1 after another). in order not mess callbacks , promises, want use async/await pattern (transpiled babel.js run node 6+).

however, unclear me, how wait response object further processing , how return result of dorequest():

var dorequest = async function (options) {      var req = await http.request(options);      // need "await" here somehow?     req.on('response', res => {         console.log('response received');         return res.statuscode;     });     req.end(); // make request, returns boolean      // return result here?! }; 

if run current code using mocha using various options http requests, of requests made simultaneously seems. fail, because dorequest() not return anything:

describe('requests', function() {     var t = [ /* request options */ ];     t.foreach(function(options) {         it('should return 200: ' + options.path, () => {             chai.assert.equal(dorequest(options), 200);         });     }); }); 

async/await work promises. work if async function awaiting returns promise.

to solve problem, can either use library request-promise or return promise dorequest function.

here solution using latter.

async function dorequest(options) {   return new promise ((resolve, reject) => {     let req = http.request(options);     req.on('response', res => {       resolve(res);     });     req.on('error', err => {       reject(err);     });   });  }  describe('requests', function() {   var t = [ /* request options */ ];   t.foreach(function(options) {     it('should return 200: ' + options.path, async function () {       try {         let res = await dorequest(options);         chai.assert.equal(res.statuscode, 200);       } catch (err) {         throw err;       }     });   }); });