完善后退功能

hxb

2022-09-20 f8f87a4fe67a1539b6fb85a54e4c178474792285

 HDL_ON/DAL/DriverLayer/Control_TcpServer.cs

@@ -183,7 +183,7 @@
        {
            MainPage.Log($"0001 tcpDataString:\r\n {tcpBodyDataString}");
            var tcpDataObj = Control.Ins.AnalysisReceiveData(tcpBodyDataString, null);
            if (tcpDataObj.BodyDataString == null)
            if (tcpDataObj==null || tcpDataObj.BodyDataString == null)
            {
                return;
            }