Listen on a port and do nothing good

timeout_server.py

# Timeout server program
import sys

from eventlet import spawn_n, sleep, Timeout
from eventlet.green import socket

HOST = ''
PORT = int(sys.argv[1])
TIMEOUT = 3.1
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'starting on port %s' % PORT
s.bind((HOST, PORT))
s.listen(1)


open_conns = []


def do_nothing(conn):
    open_conns.append(conn)
    try:
        sleep(TIMEOUT)
        conn.close()
    finally:
        open_conns.remove(conn)
        print 'closed conn (%s)' % len(open_conns)

while True:
    while len(open_conns) >= 1000:
        sleep(0.01)
    with Timeout(0.01, False):
        conn, addr = s.accept()
        print 'accept conn (%s)' % len(open_conns)
        spawn_n(do_nothing, conn)