Test different HTTP version lines against a list of addresses

httpversion.py

from socket import create_connection
from ssl import create_default_context

def run_test(addr, path, httpversion):
    host, port = addr
    ctx = create_default_context()
    with create_connection(addr) as s:
        with ctx.wrap_socket(s, server_hostname=host) as ss:
            ss.send(b'GET %s %s\r\n' % (
                path.encode('utf8'),
                httpversion.encode('utf8')
            ))
            ss.send(b'Host: %s\r\n' % host.encode('utf8'))
            ss.send(b'\r\n')
            line = ss.read(1024)
            lines = line.split(b'\r\n', 1)
            if len(lines) < 2:
                return None
            parts = lines[0].split(b' ')
            if len(parts) < 3:
                return None
            try:
                return int(parts[1])
            except:
                return None

path = '/robots.txt'

tests = [
    'HTTP/1',
    'HTTP/0.0',
    'HTTP/1.0',
    'HTTP/1.1',
    'HTTP/1.9',
    'HTTP/2.0',
    'HTTP/9.1',
    'HTTP/x.x',
    'HTTP/1.00',
    'HTTP/1.000',
    'HTTP/1.0000',
    'HTTP/12.0',
    'HTTP/123.0',
    'HTML/1.0',
    'DAVY/1.0',
]

addrs = [
    ('amazon.com', 443),
    ('craigslist.org', 443),
    ('ebay.com', 443),
    ('en.wikipedia.org', 443),
    ('facebook.com', 443),
    ('google.com', 443),
    ('hulu.com', 443),
    ('imdb.com', 443),
    ('instagram.com', 443),
    ('linkedin.com', 443),
    ('netflix.com', 443),
    ('reddit.com', 443),
    ('tiktok.com', 443),
    ('twitter.com', 443),
    ('urbandictionary.com', 443),
    ('walmart.com', 443),
    ('weather.com', 443),
    ('yelp.com', 443),
    ('youtube.com', 443),
]

fp = open('results.txt', 'w')

line = ['Site']
for test in tests:
    line.append(test)

fp.write('\t'.join(line) + '\n')

for addr in addrs:
    print('\nScanning: ' + addr[0])
    line = [addr[0]]
    for test in tests:
        try:
            status = run_test(addr, path, test)
        except KeyboardInterrupt:
            exit(1)
        except:
            status = None
        if status is None:
            line.append('')
            print('  ', test, 'error')
        else:
            line.append(str(status))
            print('  ', test, status)
    fp.write('\t'.join(line) + '\n')

fp.close()