import socket
import asyncio

HOST = '127.0.0.1'
PORT = 65432


loop = asyncio.get_event_loop()


async def read_data(conn):
    while True:
        data = await loop.sock_recv(conn, 1024)
        if data:
            await loop.sock_sendall(conn, b"qwe")


sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind((HOST, PORT))
sock.listen(100)
conn, addr = sock.accept()  # Should be ready
conn.setblocking(False)

loop.run_until_complete(read_data(conn))