import asyncio
import ssl

async def wholething():
    async def handle_connection(reader, writer):
        addr = writer.get_extra_info('peername')
        data = await reader.readline()
        print(f'Server received {data!r} from {addr}')
        writer.write(b'pong\n')
        await writer.drain()
        writer.close()
        print('Server done')

    server_context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
    server_context.load_cert_chain('/tmp/ssl/snakeoil.crt', '/tmp/ssl/snakeoil.key')

    server = await asyncio.start_server(handle_connection, '127.0.0.1', ssl=server_context, )
    port = server.sockets[0].getsockname()[1]

    print(f'Serving on {server.sockets[0].getsockname()}')

    async def tcp_echo_client():
        _NAIVE_SSL_CONTEXT = ssl.SSLContext()
        _NAIVE_SSL_CONTEXT.check_hostname = False
        reader, writer = await asyncio.open_connection('localhost', port, ssl=_NAIVE_SSL_CONTEXT, )
        writer.write(b'ping\n')
        await writer.drain()
        data = await reader.readline()
        print(f'Client received {data!r} from server')
        writer.close()
        print('Client done')

    await tcp_echo_client()