Add /proxy endpoint to retrieve client IP information

src/server/server.ts

@@ -15,6 +15,13 @@ server.set('trust proxy', 1)
 server.use(limiter)
 server.use('/trpc', trpcMiddleware)
 
+server.get('/proxy', (request, response) =>
+  response.json({
+    xForwardedFor: request.headers['x-forwarded-for'] || 'No-IP-Header-Found',
+    ip: request.ip
+  })
+)
+
 if (process.env.NODE_ENV == 'production') {
   server.use('/', express.static('dist/web'))