try: import usocket as _socket except: import _socket try: import ussl as ssl except: import ssl # CPython only supports server_hostname with SSLContext ssl = ssl.SSLContext() def test_one(site, opts): ai = _socket.getaddrinfo(site, 443) addr = ai[0][-1] s = _socket.socket() try: s.connect(addr) if "sni" in opts: s = ssl.wrap_socket(s, server_hostname=opts["host"]) else: s = ssl.wrap_socket(s) s.write(b"GET / HTTP/1.0\r\nHost: %s\r\n\r\n" % bytes(site, "latin")) resp = s.read(4096) # print(resp) finally: s.close() SITES = [ "google.com", "www.google.com", "api.telegram.org", {"host": "api.pushbullet.com", "sni": True}, # "w9rybpfril.execute-api.ap-southeast-2.amazonaws.com", {"host": "w9rybpfril.execute-api.ap-southeast-2.amazonaws.com", "sni": True}, ] def main(): for site in SITES: opts = {} if isinstance(site, dict): opts = site site = opts["host"] try: test_one(site, opts) print(site, "ok") except Exception as e: print(site, repr(e)) main()