rate-limit-test.py

rate-limit-test.py

#!/usr/bin/env python3

import requests
import time
from sys import argv
from threading import Thread

URL = argv[-1]

def worker(i, url):
    start_time = time.time()
    res = requests.get(url)
    req_time = round((time.time() - start_time) * 1000)
    print("Request {:02d}: {} | {}ms".format(i, res.status_code, req_time))

threads = list()

for i in range(0, 20):
    t = Thread(target=worker, args=[i, URL])
    t.start()
    threads.append(t)

[t.join() for t in threads]

rate-limit.sh

#!/bin/bash

firewall-cmd \
  --permanent \
  --direct \
  --add-rule ipv4 filter INPUT_direct 0 -p tcp --match --dports 80,443 --state NEW -m recent --set

firewall-cmd \
  --permanent \
  --direct \
  --add-rule ipv4 filter INPUT_direct 1 -p tcp --match --dports 80,443 --state NEW -m recent --update --seconds 1 --hitcount 10 -j REJECT --reject-with tcp-reset