I have uploaded a program which I am doing. It is the code to back up data by sending files over network using tcp. It is divided into 4 cases. But the problem is my whole program is kept inside a while loop and stop button is used to stop the program. But unfortunately the stop button is not working. I dont know why is that. Can someone please help me by saying why is the stop button not working and what should be done to make it work. Thanking You in advance.
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