Stream Response into HTTP Response
You could pipe the streams directly rather than using request-promise.
const express = require('express');const router = express.Router();const https = require('https');router.get('/', function(req, res) { const url = 'https://www.gravatar.com/avatar/2ea70f0c2a432ffbb9e5875039645b39?s=32&d=identicon&r=PG&f=1'; const request = https.get(url, function(response) { const contentType = response.headers['content-type']; console.log(contentType); res.setHeader('Content-Type', contentType); response.pipe(res); }); request.on('error', function(e){ console.error(e); });});module.exports = router;Or using the request library on which request-promise is based:
const express = require('express');const router = express.Router();const request = require('request');router.get('/', function(req, res) { const url = 'https://www.gravatar.com/avatar/2ea70f0c2a432ffbb9e5875039645b39?s=32&d=identicon&r=PG&f=1'; request.get(url).pipe(res);});module.exports = router;