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Please write a basic connectionless-oriented socket SOCKET C/S communication program. The problem is the server side, the program' s requirements are: to create a datagram type socket, and with the local bind port 20005, waiting for the client sent an int data, receive data, this int integer output, and determine whether it is a prime number (with 0 and 1 to determine the results indicated that 0 means " no" , a " yes" ), and then judge the outcome back to the other side, the last socket is closed, exit the system.