Python is fast and known for its performance and capabilities.
While working on the HTTP/2 test tool, I tried many options and found Python was fastest, more accurate, and lightweight. If you are developing something in-house to test if site support HTTP/2 or not, you may use the following code.
It works on Python 3.x.
import socket
import ssl
import csv
import argparse
from urllib.parse import urlparse
socket.setdefaulttimeout(5)
headers = {"user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"}
def check_http2(domain_name):
try:
HOST = urlparse(domain_name).netloc
PORT = 443
ctx = ssl.create_default_context()
ctx.set_alpn_protocols(['h2', 'spdy/3', 'http/1.1'])
conn = ctx.wrap_socket(
socket.socket(socket.AF_INET, socket.SOCK_STREAM), server_hostname=HOST)
conn.connect((HOST, PORT))
pp = conn.selected_alpn_protocol()
if pp == "h2":
return {"http2": True}
else:
return {"http2": False}
except Exception as e:
print(e)
parser = argparse.ArgumentParser()
parser.add_argument("domain", help="display a square of a given number",
type=str)
args = parser.parse_args()
print(check_http2(args.domain))To run the program, you can use the following syntax.
python3 $SCRIPT.py $URLEx
[email protected]:~# python3 http2.py https://siterelic.com
{'http2': True}
[email protected]:~#You see the few lines of code to achieve. If you are looking to master in Python, then check out this Udemy course. And, to take advantage of H2 protocol, refer the following implementation guide.
