add

+/**************************************************************************
+* file:              dmpserverfilter.h
+
+* Author:            wanzhongping
+* Date:              2021-03-09 11:57:12
+* Email:             zhongpingw@chinadci.com
+* copyright:         广州城市信息研究所有限公司
+***************************************************************************/
+
+#ifndef __dmpserverfilter_h__
+#define __dmpserverfilter_h__
+
+#include "dmap_server.h"
+#include <map>
+
+class DmpServerInterface;
+
+class SERVER_EXPORT DmpServerFilter
+{
+public:
+  DmpServerFilter(DmpServerInterface *server_interface);
+
+  virtual ~DmpServerFilter() = default;
+
+  DmpServerInterface *server_interface() { return server_interface_; }
+
+  virtual void RequestReady();
+
+  virtual void ResponseComplete();
+
+  virtual void SendResponse();
+
+private:
+  DmpServerInterface *server_interface_ = nullptr;
+};
+
+typedef std::map<int, DmpServerFilter *> DmpServerFiltersMap;
+
+#endif //__dmpserverfilter_h__