def get_remote_addr(transport):
    info = transport.get_extra_info("peername")
    if info is not None and isinstance(info, (list, tuple)) and len(info) == 2:
        return (str(info[0]), int(info[1]))
    return None


def get_local_addr(transport):
    info = transport.get_extra_info("sockname")
    if info is not None and isinstance(info, (list, tuple)) and len(info) == 2:
        return (str(info[0]), int(info[1]))
    return None


def is_ssl(transport):
    return bool(transport.get_extra_info("sslcontext"))