feat: complete realtime challenge matchmaking

backend/contest/consumers.py

@@ -26,7 +26,11 @@ class MatchConsumer(AsyncJsonWebsocketConsumer):
             await self.send_json({"type": "pong"})
             return
         if event_type == "progress":
-            answered_count = max(0, min(int(content.get("answered_count", 0)), 100))
+            try:
+                answered_count = max(0, min(int(content.get("answered_count", 0)), 100))
+            except (TypeError, ValueError):
+                await self.send_json({"type": "error", "message": "答题进度无效"})
+                return
             await self.channel_layer.group_send(
                 self.group_name,
                 {
@@ -45,6 +49,15 @@ class MatchConsumer(AsyncJsonWebsocketConsumer):
             }
         )
 
+    async def match_state(self, event):
+        await self.send_json(
+            {
+                "type": "state",
+                "reason": event["reason"],
+                "match_id": str(self.match_id),
+            }
+        )
+
     @database_sync_to_async
     def _is_participant(self, user_id):
         return RealtimeMatch.objects.filter(id=self.match_id).filter(