Check network can resolve and access a host with port

README.md

Run me like this. Or maybe not! it's dangerous!

curl -sL "https://gist.github.com/mariocesar/b628c91e7b00cca0dca371ac2d54544c/raw/script.py?v=$(date +%s)" | python3 - google.com:443

script.py

import sys
import socket

host, port = sys.argv[1].split(':')

print(f"trying {host}:{port}")

print("socket.gethostbyname")

try:
    print(socket.gethostbyname(host))
except Exception as exc:
    print(exc)

print("socket.getaddrinfo")
    
try:
    print(socket.getaddrinfo(
        host,
        port,
        proto=socket.IPPROTO_TCP,
        type=socket.SOCK_STREAM
    ))
except Exception as exc:
    print(exc)