whois_websocket.py

# original code is from https://www.gkbrk.com/2016/08/about-the-whois-protocol/
import socket
from functools import lru_cache


@lru_cache(maxsize=32)
def get_tld_server(tld="com"):
    sock = socket.socket()
    sock.connect(("whois.iana.org", 43))
    sock.send("{}\n".format(tld).encode("utf-8"))
    for line in sock.makefile():
        parts = line.split(":", 2)
        if len(parts) > 1:
            header_name = parts[0].strip()
            header_value = parts[1].strip()
            if header_name.lower() == "whois":
                return header_value


def get_whois_data(domain, server=None):
    if not server:
        tld = domain.split(".")[-1]
        server = get_tld_server(tld)

    nextserver = None

    sock = socket.socket()
    sock.connect((server, 43))
    sock.send("{}\n".format(domain).encode("utf-8"))
    for line in sock.makefile():
        parts = line.split(":", 2)
        if len(parts) > 1:
            header_name = parts[0].strip()
            header_value = parts[1].strip()
            if header_name.lower() == "whois server":
                nextserver = header_value
        yield line.replace("\n", "")

    if nextserver:
        for line in get_whois_data(domain, nextserver):
            yield line


responses = []
responses.append("\n".join(get_whois_data("gkbrk.com")))
responses.append("\n".join(get_whois_data("hepsiburada.com")))
responses.append("\n".join(get_whois_data("openwrt.org")))
responses.append("\n".join(get_whois_data("deu.edu.tr")))
for response in responses:
    print(response)