diff --git a/server/gameserver/roommgr.cc b/server/gameserver/roommgr.cc
index df186a52..a3b11be4 100644
--- a/server/gameserver/roommgr.cc
+++ b/server/gameserver/roommgr.cc
@@ -840,3 +840,10 @@ std::shared_ptr<CustomBattle> RoomMgr::GetHisCustomRoom(const std::string& room_
     auto itr = his_custom_room_hash_.find(room_uuid);
     return itr != his_custom_room_hash_.end() ? itr->second : nullptr;
 }
+
+void RoomMgr::SendGetCustomBattleData(std::shared_ptr<cs::CMJoin> join_msg,
+                                      std::function<
+                                      void(std::vector<std::shared_ptr<BattleDataContext>>&)> cb)
+{
+
+}
diff --git a/server/gameserver/roommgr.h b/server/gameserver/roommgr.h
index 079615b1..785db14a 100644
--- a/server/gameserver/roommgr.h
+++ b/server/gameserver/roommgr.h
@@ -118,6 +118,9 @@ class RoomMgr : public a8::Singleton<RoomMgr>
     void AdjustCMJoin(cs::CMJoin* msg);
     std::shared_ptr<CustomBattle> GetCustomRoom(const std::string& room_uuid);
     std::shared_ptr<CustomBattle> GetHisCustomRoom(const std::string& room_uuid);
+    void SendGetCustomBattleData(std::shared_ptr<cs::CMJoin> join_msg,
+                                 std::function<
+                                 void(std::vector<std::shared_ptr<BattleDataContext>>&)> cb);
 
  private:
     int current_room_idx_ = 0;