#! /usr/bin/python3
import socketserver

class MyTCPHandler(socketserver.BaseRequestHandler):
    """
    The request handler class for our server.

    It is instantiated once per connection to the server, and must
    override the handle() method to implement communication to the
    client.
    """

    def handle(self):
        print('handling')
        # self.request is the TCP socket connected to the client
        self.data = self.request.recv(1024).strip()
        print("{} wrote:".format(self.client_address[0]))
        print(self.data)
        # just send back the same data, but upper-cased
        self.request.sendall(self.data.upper())
    def __enter__(self):
        print('sss')
        return 'sss111'
    def __exit__(self ,type, value, traceback):
        print('ok')
        return False

if __name__ == "__main__":
    HOST, PORT = "localhost", 3210
    print('hello')

    # Create the server, binding to localhost on port 3210
    with socketserver.TCPServer((HOST, PORT), MyTCPHandler) as server:
        print(server)
        # Activate the server; this will keep running until you
        # interrupt the program with Ctrl-C
        server.serve_forever()