Enable localhost reverse proxy serving

build-system/server/server-app.js

@@ -27,13 +27,18 @@ app.engine('html', require('hogan-express'));
 app.locals.delimiters = '<% %>';
 
 // HTTPS redirect.
+app.set('trust proxy', 'loopback');
 app.use((req, res, next) => {
-  let host = req.headers.host || req.host;
+  let host = req.headers.host || req.hostname || req.host;
   const secure =
     req.secure ||
     req.connection.encrypted ||
     req.get('X-Forwarded-Proto') === 'https';
-  if (secure || host.indexOf('localhost') != -1) {
+  if (
+    secure ||
+    host.indexOf('localhost') != -1 ||
+    host === process.env.PROXY_URL
+  ) {
     // Skip localhost or if already secure.
     next();
     return;

build-system/server/server.js

@@ -25,8 +25,8 @@ const isRunning = require('is-running');
 const log = require('fancy-log');
 const webserver = require('gulp-webserver');
 
-const host = process.env.SERVE_HOST;
-const port = process.env.SERVE_PORT;
+const host = process.env.SERVE_HOST || process.env.HOST;
+const port = process.env.SERVE_PORT || process.env.PORT;
 const useHttps = process.env.SERVE_USEHTTPS == 'true' ? true : false;
 const gulpProcess = process.env.SERVE_PROCESS_ID;
 const quiet = process.env.SERVE_QUIET == 'true' ? true : false;

build-system/tasks/serve.js

@@ -19,7 +19,7 @@ const args = require('./args');
 const log = require('fancy-log');
 const nodemon = require('nodemon');
 
-const host = args.host || 'localhost';
+const host = args.host || process.env.HOST || 'localhost';
 const port = args.port || process.env.PORT || 8000;
 const useHttps = args.https != undefined;
 const quiet = args.quiet != undefined;

gulpfile.js

@@ -23,6 +23,7 @@ if (!isCiBuild()) {
 }
 
 const $$ = require('gulp-load-plugins')();
+require('dotenv').config(); // eslint-disable-line
 const gulp = $$.help(require('gulp'));
 const {assets} = require('./build-system/tasks/assets');
 const {build, clean, watch} = require('./build-system/tasks/builders');

package.json

@@ -47,6 +47,7 @@
     "chai-as-promised": "7.1.1",
     "cssnano": "6.0.3",
     "del": "7.1.0",
+    "dotenv": "^16.4.4",
     "eslint": "8.56.0",
     "eslint-plugin-google-camelcase": "0.0.2",
     "eslint-plugin-prettier": "4.2.1",