end peering in task thread if we get a 403

oml/nodes.py

@@ -173,13 +173,13 @@ class Node(Thread):
             r = self._opener.open(url, data=content)
         except urllib.error.HTTPError as e:
             if e.code == 403:
-                logger.debug('REMOTE ENDED PEERING')
-                with db.session():
-                    u = self.user
-                    if u.peered:
-                        u.update_peering(False)
+                logger.debug('403: %s (%s)', url, self.user_id)
+                self._running = False
+                if state.tasks:
+                    state.tasks.queue('peering', (self.user_id, False))
+                del self._nodes[self.user_id]
                 self.online = False
-                return
+                return None
             logger.debug('urllib2.HTTPError %s %s', e, e.code)
             self.online = False
             return None