worker: check tor every 30s instead of exponential backoff

ppf.py

@@ -521,8 +521,8 @@ def worker_main(config):
                 wstate['backoff'] = min(wstate['backoff'] * 2, 300)  # Max 5 min backoff
 
     def wait_for_tor():
-        """Wait for Tor to become available, with exponential backoff."""
+        """Wait for Tor to become available, checking every 30 seconds."""
-        backoff = 10
+        check_interval = 30
         while True:
             working, tor_ip = check_tor_connectivity(config.torhosts)
             if working:
@@ -533,14 +533,13 @@ def worker_main(config):
                 except NeedReregister:
                     do_register()
                 return working, tor_ip
-            _log('tor still down, retrying in %ds' % backoff, 'warn')
+            _log('tor still down, retrying in %ds' % check_interval, 'warn')
             # Send heartbeat with tor_ok=False
             try:
                 worker_send_heartbeat(server_url, wstate['worker_key'], False, None, worker_profiling)
             except NeedReregister:
                 do_register()
-            time.sleep(backoff)
+            time.sleep(check_interval)
-            backoff = min(backoff * 2, 300)  # Max 5 min backoff
 
     try:
         while True: