Admin UI fixes: remove duplicate tasks, report transport upgrades

Author: miguelgrinberg

src/socketio/admin.py

@@ -194,6 +194,8 @@ def shutdown(self):
         if self.stats_task:  # pragma: no branch
             self.stop_stats_event.set()
             self.stats_task.join()
+            self.stop_stats_event.clear()
+            self.stats_task = None
 
     def _trigger_event(self, event, namespace, *args):
         t = time.time()
@@ -206,6 +208,8 @@ def _trigger_event(self, event, namespace, *args):
                 serialized_socket,
                 datetime.fromtimestamp(t, timezone.utc).isoformat(),
             ), namespace=self.admin_namespace)
+            self.sio.start_background_task(self._check_for_upgrade, eio_sid,
+                                           sid, namespace)
         elif event == 'disconnect':
             del self.sio.manager._timestamps[sid]
             reason = args[1]
@@ -283,6 +287,7 @@ def _emit(self, event, data, namespace, room=None, skip_sid=None,
     def _handle_eio_connect(self, eio_sid, environ):
         if self.stop_stats_event is None:
             self.stop_stats_event = self.sio.eio.create_event()
+        if self.stats_task is None:
             self.stats_task = self.sio.start_background_task(
                 self._emit_server_stats)
 

src/socketio/async_admin.py

@@ -157,9 +157,6 @@ async def config(sid):
                                     namespace=self.admin_namespace)
 
         self.sio.start_background_task(config, sid)
-        self.stop_stats_event = self.sio.eio.create_event()
-        self.stats_task = self.sio.start_background_task(
-            self._emit_server_stats)
 
     async def admin_emit(self, _, namespace, room_filter, event, *data):
         await self.sio.emit(event, data, to=room_filter, namespace=namespace)
@@ -183,6 +180,8 @@ async def shutdown(self):
         if self.stats_task:  # pragma: no branch
             self.stop_stats_event.set()
             await asyncio.gather(self.stats_task)
+            self.stats_task = None
+            self.stop_stats_event.clear()
 
     async def _trigger_event(self, event, namespace, *args):
         t = time.time()
@@ -195,6 +194,8 @@ async def _trigger_event(self, event, namespace, *args):
                 serialized_socket,
                 datetime.fromtimestamp(t, timezone.utc).isoformat(),
             ), namespace=self.admin_namespace)
+            self.sio.start_background_task(self._check_for_upgrade, eio_sid,
+                                           sid, namespace)
         elif event == 'disconnect':
             del self.sio.manager._timestamps[sid]
             reason = args[1]
@@ -273,6 +274,7 @@ async def _emit(self, event, data, namespace, room=None, skip_sid=None,
     async def _handle_eio_connect(self, eio_sid, environ):
         if self.stop_stats_event is None:
             self.stop_stats_event = self.sio.eio.create_event()
+        if self.stats_task is None:
             self.stats_task = self.sio.start_background_task(
                 self._emit_server_stats)