Use x-forwarded-proto when constructing the url

Author: domharrington

lib/process-request.js

@@ -16,7 +16,7 @@ module.exports = (req, options = {}) => {
   return {
     method: req.method,
     url: url.format({
-      protocol: req.protocol,
+      protocol: req.headers['x-forwarded-proto'] || req.protocol,
       host: req.headers['x-forwarded-host'] || req.get('host'),
       pathname: `${req.baseUrl}${req.path}`,
       query: req.query,

test/process-request.test.js

@@ -63,6 +63,13 @@ describe('processRequest()', () => {
       // This regex is for supertest's random port numbers
       .expect(({ body }) => assert(body.url.match(/http:\/\/127.0.0.1:\d+\/path\?a=b/))));
 
+  it('#url protocol x-forwarded-proto', () =>
+    request(createApp())
+      .post('/')
+      .set('x-forwarded-proto', 'https')
+      // This regex is for supertest's random port numbers
+      .expect(({ body }) => assert(body.url.match(/^https/))));
+
   it('#url-basepath', () =>
     request(createApp())
       .post('/test-base-path/a')