Update app.py

app.py

@@ -54,13 +54,16 @@ def keep_alive():
         url = f"https://{space_id.replace('/', '-')}.hf.space/"
         logging.info(f"Using external URL for keep‑alive: {url}")
     else:
+        # Fallback: try to guess the URL from the Space's name?
+        # We'll use localhost as a last resort.
         url = "http://127.0.0.1:7860/"
         logging.warning("No SPACE_ID found, using localhost – will not prevent sleep!")
 
     while True:
-        time.sleep(300)
+        time.sleep(300)   # every 5 minutes
         try:
-            with urllib.request.urlopen(url, timeout=10) as response:
+            req = urllib.request.Request(url, headers={'User-Agent': 'ARF-KeepAlive/1.0'})
+            with urllib.request.urlopen(req, timeout=30) as response:
                 status = response.getcode()
                 logging.info(f"Keep‑alive ping: {status}")
         except Exception as e: