serve.py

import socketserver
import socket
import time
import logging
headers = "HTTP/1.1 200 OK\nContent-Type: text/html\n\n"
payload = "sleep 1\n{}\nsleep 1\n".format("\n".join(["echo foo"]*20))
more = "echo final lines"

logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s %(message)s')
logger = logging.getLogger('server')


if __name__ == '__main__':
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.bind(('localhost', 6666))
    s.listen(1)
    while True:
        conn, addr = s.accept()
        data = conn.recv(1024)
        logger.info(data.decode())
        logger.info("Sending headers")
        conn.sendall(headers.encode())
        logger.info("Sending payload")
        conn.sendall(payload.encode())
        logger.info("Sending final payload")
        conn.sendall(more.encode())
        logger.info("All done")
        logger.info("*" * 50)
        conn.close()