test_ftplib.py 文件源码

def server(self):
        # This method sets the evt 3 times:
        #  1) when the connection is ready to be accepted.
        #  2) when it is safe for the caller to close the connection
        #  3) when we have closed the socket
        self.sock.listen(5)
        # (1) Signal the caller that we are ready to accept the connection.
        self.evt.set()
        try:
            conn, addr = self.sock.accept()
        except socket.timeout:
            pass
        else:
            conn.sendall(b"1 Hola mundo\n")
            conn.shutdown(socket.SHUT_WR)
            # (2) Signal the caller that it is safe to close the socket.
            self.evt.set()
            conn.close()
        finally:
            self.sock.close()