1 import SocketServer 2  3 class MyTCPHandler(SocketServer.BaseRequestHandler): 4     def handle(self): 5         while True: 6             self.data = self.request.recv(1024).strip() 7             print '{} wrote:'.format(self.client_address[0]) 8             print self.data 9             self.request.sendall(self.data.upper())10 11 if __name__ == '__main__' :12     HOST, PORT = 'localhost', 999913     server = SocketServer.ThreadingTCPServer((HOST, PORT), MyTCPHandler)14     server.serve_forever()