public static object DeserializeFrom(ushort opcode, Type type, MemoryStream memoryStream)
        {
            if (opcode < PbMaxOpcode)
            {
                return(ProtobufHelper.FromStream(type, memoryStream));
            }

            if (opcode >= JsonMinOpcode)
            {
                return(JsonHelper.FromJson(type, memoryStream.GetBuffer().ToStr((int)memoryStream.Position, (int)(memoryStream.Length - memoryStream.Position))));
            }
#if !DEBUG_CLIENT
            return(MongoHelper.FromStream(type, memoryStream));
#else
            throw new Exception($"client no message: {opcode}");
#endif
        }
        public static void SerializeTo(ushort opcode, object obj, MemoryStream memoryStream)
        {
            if (opcode < PbMaxOpcode)
            {
                ProtobufHelper.ToStream(obj, memoryStream);
                return;
            }

            if (opcode >= JsonMinOpcode)
            {
                string s     = JsonHelper.ToJson(obj);
                byte[] bytes = s.ToUtf8();
                memoryStream.Write(bytes, 0, bytes.Length);
                return;
            }
#if !DEBUG_CLIENT
            MongoHelper.ToStream(obj, memoryStream);
#else
            throw new Exception($"client no message: {opcode}");
#endif
        }