检测

    import socket
    def _check_bootstrap_server(broker_list):
        pattern = re.compile(r'.*?\[?([0-9a-zA-Z\-%._:]*)\]?:([0-9]+)')
        for host_and_port in broker_list:
            match = pattern.match(host_and_port)
            if match:
                try:
                    host = match.group(1)
                    port = int(match.group(2))
                    ok = False
                    for af in (socket.AF_INET, socket.AF_INET6):
                        try:
                            socket.inet_pton(af, host)
                            ok = True
                            break
                        except (ValueError, AttributeError, socket.error):
                            continue
                    assert ok, "Illegal hostname"
                    assert 0 <= port <= 65535, "Port out of range: " + str(port)
                except socket.error:
                    return False
            else:
                return False
        return True

copy from kafka2.audit.py