관리-도구
편집 파일: connection.cpython-38.pyc
U ��.e � @ sn d dl mZ d dlZddlmZmZ ddlmZ dd� Zej ddfd d �Z d d � Z d d� Z dd� Z e d�ZdS )� )�absolute_importN� )�NoWayToWaitForSocketError� wait_for_read� )�_appengine_environc C sN t | dd�}|dkrdS |dkr$dS zt|dd�W S tk rH Y dS X dS )a Returns True if the connection is dropped and should be closed. :param conn: :class:`httplib.HTTPConnection` object. Note: For platforms like AppEngine, this will always return ``False`` to let the platform handle connection recycling transparently for us. �sockFNTg )�timeout)�getattrr r )Zconnr � r �G/usr/lib/python3.8/site-packages/pip/_vendor/urllib3/util/connection.py�is_connection_dropped s r c C s� | \}}|� d�r |�d�}d}t� }t�|||tj�D ]�}|\} } } } } d}zNt�| | | �}t||� |tjk r||�|� |r�|� |� |� | � |W S tj k r� } z |}|dk r�|� � d}W 5 d}~X Y q8X q8|dk r�|�t� d��dS )ad Connect to *address* and return the socket object. Convenience function. Connect to *address* (a 2-tuple ``(host, port)``) and return the socket object. Passing the optional *timeout* parameter will set the timeout on the socket instance before attempting to connect. If no *timeout* is supplied, the global default timeout setting returned by :func:`getdefaulttimeout` is used. If *source_address* is set it must be a tuple of (host, port) for the socket to bind as a source address before making the connection. An host of '' or port 0 tells the OS to use the default. �[z[]Nz!getaddrinfo returns an empty list) � startswith�strip�allowed_gai_family�socketZ getaddrinfoZ SOCK_STREAM�_set_socket_options�_GLOBAL_DEFAULT_TIMEOUTZ settimeout�bindZconnect�error�close)Zaddressr Zsource_addressZsocket_options�hostZport�err�family�resZafZsocktype�protoZ canonnameZsar �er r r �create_connection! s2 r c C s$ |d kr d S |D ]}| j |� qd S )N)Z setsockopt)r Zoptions�optr r r r Y s r c C s t j} trt j} | S )z�This function is designed to work in the context of getaddrinfo, where family=socket.AF_UNSPEC is the default and will perform a DNS search for both IPv6 and IPv4 records.)r ZAF_INET�HAS_IPV6Z AF_UNSPEC)r r r r r a s r c C sb d}d}t �� rdS tjrRz"t�tj�}|�| df� d}W n tk rP Y nX |r^|�� |S )z6 Returns True if the system can bind an IPv6 address. NFr T)r Zis_appengine_sandboxr �has_ipv6ZAF_INET6r � Exceptionr )r r r! r r r � _has_ipv6l s r# z::1)Z __future__r r �waitr r Zcontribr r r r r r r# r r r r r �<module> s � 8