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o ;j; � @ s` d dl mZmZmZ d dlZd dlZd dlmZ d dlm Z d dl m Z m Z G dd� de �Z dS )� )�absolute_import�division�print_functionN)�gen)�IOLoop)�Resolver� is_valid_ipc @ s: e Zd ZdZd dd�Zdd� Zdd� Zejd d d ��Z dS )� CaresResolvera> Name resolver based on the c-ares library. This is a non-blocking and non-threaded resolver. It may not produce the same results as the system resolver, but can be used for non-blocking resolution when threads cannot be used. c-ares fails to resolve some names when ``family`` is ``AF_UNSPEC``, so it is only recommended for use in ``AF_INET`` (i.e. IPv4). This is the default for ``tornado.simple_httpclient``, but other libraries may default to ``AF_UNSPEC``. .. versionchanged:: 4.1 The ``io_loop`` argument is deprecated. Nc C s( |pt �� | _tj| jd�| _i | _d S )N)Z sock_state_cb)r �current�io_loop�pycaresZChannel�_sock_state_cb�channel�fds)�selfr � r �[/opt/saltstack/salt/lib/python3.10/site-packages/salt/ext/tornado/platform/caresresolver.py� initialize s zCaresResolver.initializec C s~ |rt jnd|r t jndB }|s | j�|� | j|= d S || jv r/| j�||� || j|< d S | j�|| j|� || j|< d S )Nr ) r �READ�WRITEr Zremove_handlerr Zupdate_handlerZ add_handler�_handle_events)r �fd�readable�writable�stater r r r s � z CaresResolver._sock_state_cbc C s: t j}t j}|tj@ r |}|tj@ r|}| j�||� d S �N)r ZARES_SOCKET_BADr r r r Z process_fd)r r �eventsZread_fdZwrite_fdr r r r , s z CaresResolver._handle_eventsr c c s� � t |�r |g}n6| j�||t�d�V � t�d�V }t|tj�s#J �|jr(J �|j \}}|r<t d|t j � |�|f ��|j}g }|D ]/} d| v rMtj} n d| v rUtj} ntj} |tjkri|| krit d|| f ��|�| | |ff� qCt�|��)N� z/C-Ares returned error %s: %s while resolving %s�.�:z%Requested socket family %d but got %d)r r � gethostbynamer ZCallbackZWait� isinstanceZ Arguments�kwargs�args�IOErrorr �errno�strerror� addresses�socket�AF_INET�AF_INET6� AF_UNSPEC�appendZReturn) r �host�port�familyr' Z callback_args�result�errorZaddrinfo�addressZaddress_familyr r r �resolve5 s4 � �� zCaresResolver.resolver )r ) �__name__� __module__� __qualname__�__doc__r r r r � coroutiner3 r r r r r s r )� __future__r r r r r( Zsalt.ext.tornador Zsalt.ext.tornado.ioloopr Zsalt.ext.tornado.netutilr r r r r r r �<module> s
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