changes

app.py

@@ -36,12 +36,13 @@ def get_user(request: Request):
 
 @app.get('/')
 def public(request: Request, user: dict = Depends(get_user)):
-    host = str(request.url).rstrip("/").replace("http://", "https://")
-    print(">>>>>>>", host)
+    root_url = gr.route_utils.get_root_url(request, "/", None)
+    root_url = root_url.replace("http://", "https://")
+    print(">>>>>>>", root_url)
     if user:
-        return RedirectResponse(url=f"{host}/gradio")
+        return RedirectResponse(url=f"{root_url}/gradio")
     else:
-        return RedirectResponse(url=f"{host}/login-demo")
+        return RedirectResponse(url=f"{root_url}/login-demo")
 
 @app.route('/logout')
 async def logout(request: Request):