Update app.js

app.js

@@ -9,6 +9,45 @@ const axios = require('axios');
 
 const app = express();
 
+// ----
+
+// Trust proxy headers (useful when behind load balancers / host proxies)
+app.set('trust proxy', true);
+
+// Normalize incoming path: remove trailing slash in-process (no redirect),
+// so callers can hit /webhook/paystack or /webhook/paystack/ and we won't send redirects.
+// This mutates req.url and keeps query string intact.
+app.use((req, res, next) => {
+  try {
+    if (req.path && req.path.length > 1 && req.path.endsWith('/')) {
+      // remove only trailing slashes from pathname while keeping query string
+      const url = req.originalUrl || req.url;
+      // split once at '?'
+      const [pathPart, q] = url.split('?');
+      const normalized = pathPart.replace(/\/+$/, '') + (q ? `?${q}` : '');
+      req.url = normalized;
+      // Also update req.originalUrl so logs match
+      req.originalUrl = normalized;
+    }
+  } catch (e) {
+    // don't break the request flow for any reason
+  }
+  return next();
+});
+
+// Ensure OPTIONS and HEAD don't cause proxies to try redirects or 301 behaviour
+app.options('*', (_req, res) => res.sendStatus(200));
+app.head('*', (_req, res) => res.sendStatus(200));
+
+// Optional light logger — helpful to confirm whether requests reach your app.
+// Comment out if you want less noise.
+app.use((req, res, next) => {
+  console.log(new Date().toISOString(), req.method, req.originalUrl, '-> ip:', req.ip || req.headers['x-forwarded-for'] || '');
+  next();
+});
+
+// ----
+
 const {
   FIREBASE_CREDENTIALS,
   PAYSTACK_DEMO_SECRET,
@@ -744,8 +783,8 @@ app.post('/create-payment-link', express.json(), async (req, res) => {
 app.get('/health', (_req, res) => res.status(200).json({ ok: true }));
 app.post('/health', (_req, res) => res.status(200).json({ ok: true }));
 
-app.get('/', (_req, res) => res.status(200).json({ ok: true }));
-app.post('/', (_req, res) => res.status(200).json({ ok: true }));
+app.get('/', (_req, res) => res.status(204).end());
+app.post('/', (_req, res) => res.status(204).end());
 
 
 app.listen(PORT, () => {