Python 3.13.5 : testing with flask, request and playwright python module.

Today some testing with these python modules: flask, request and playwright.

I used pip to install flask python package:

pip install flask
Collecting flask
  Downloading flask-3.1.1-py3-none-any.whl.metadata (3.0 kB)
...
Installing collected packages: markupsafe, itsdangerous, blinker, werkzeug, jinja2, flask
Successfully installed blinker-1.9.0 flask-3.1.1 itsdangerous-2.2.0 jinja2-3.1.6 markupsafe-3.0.2 werkzeug-3.1.3

pip install requests
...
Installing collected packages: urllib3, idna, charset_normalizer, certifi, requests
Successfully installed certifi-2025.6.15 charset_normalizer-3.4.2 idna-3.10 requests-2.32.4 urllib3-2.5.0

pip install playwright
Collecting playwright
...
Installing collected packages: pyee, greenlet, playwright
Successfully installed greenlet-3.2.3 playwright-1.52.0 pyee-13.0.0
...
playwright install
Downloading Chromium 136.0.7103.25 ...

This will download a lot fo files and the will install the playwright tool.

First script is simple one will try to get cloudflare header on default ip:

from flask import Flask, request

app = Flask(__name__)

@app.route("/")
def detecteaza_ipuri():
    ip_client = request.headers.get('CF-Connecting-IP', 'Necunoscut')
    ip_cloudflare = request.remote_addr
    return (
        f"IP real vizitator: {ip_client}
"
        f"IP Cloudflare (vizibil de server): {ip_cloudflare}"
    )

if __name__ == "__main__":
    app.run(debug=True)

The next one will check more ...

from flask import Flask, request
import requests
import ipaddress

app = Flask(__name__)

def este_ip_cloudflare(ip):
    try:
        raspuns = requests.get("https://www.cloudflare.com/ips-v4")
        raspuns.raise_for_status()
        subneturi = raspuns.text.splitlines()

        for subnet in subneturi:
            if ipaddress.ip_address(ip) in ipaddress.ip_network(subnet):
                return True
        return False
    except Exception as e:
        return f"Eroare la verificarea IP-ului Cloudflare: {e}"

@app.route("/")
def detecteaza_ipuri():
    ip_client = request.headers.get('CF-Connecting-IP', 'Necunoscut')
    ip_cloudflare = request.remote_addr
    rezultat = este_ip_cloudflare(ip_cloudflare)

    return (
        f"IP real vizitator: {ip_client}
"
        f"IP Cloudflare (forwarder): {ip_cloudflare}
"
        f"Este IP-ul din rețeaua Cloudflare? {'DA' if rezultat == True else 'NU' if rezultat == False else rezultat}"
    )

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000)

Now, the script with the request python module:

import requests

url = "https://cobalt.tools"
headers = {
    "User-Agent": "Mozilla/5.0",  # Simulează un browser real
}

try:
    r = requests.get(url, headers=headers, timeout=10)
    content = r.text.lower()

    print(f"Cod răspuns HTTP: {r.status_code}")

    if "cloudflare" in content or "cf-ray" in content or "attention required" in content:
        print("Cloudflare a intermediat cererea sau a blocat-o cu o pagină specială.")
    else:
        print("Cererea a fost servită normal.")
except Exception as e:
    print(f"Eroare la conexiune: {e}")

The last one will use the playwright python module:

import sys
import re
from urllib.parse import urlparse
from pathlib import Path
from playwright.sync_api import sync_playwright

def converteste_url_in_nume_fisier(url):
    parsed = urlparse(url)
    host = parsed.netloc.replace('.', '_')
    path = parsed.path.strip('/').replace('/', '_')
    if not path:
        path = 'index'
    return f"{host}_{path}.txt"

if len(sys.argv) != 2:
    print("Utilizare: python script.py https://exemplu.com")
    sys.exit(1)

url = sys.argv[1]
fisier_output = converteste_url_in_nume_fisier(url)

with sync_playwright() as p:
    browser = p.chromium.launch(headless=True)
    pagina = browser.new_page()
    pagina.goto(url, wait_until='networkidle')
    continut = pagina.content()
    Path(fisier_output).write_text(continut, encoding='utf-8')
    browser.close()

print(f"Conținutul a fost salvat în: {fisier_output}")

This will create a file with the source code of web page.