관리-도구
편집 파일: connection.cpython-38.pyc
U &?�f% � @ s� d dl mZ d dlZddlmZ ddlmZ ddlmZ ddl m Z m Z d d � Z ej ddfd d �Zd d� Zdd� Zdd� Zed�ZdS )� )�absolute_importN� )�_appengine_environ)�LocationParseError)�six� )�NoWayToWaitForSocketError� wait_for_readc 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:`http.client.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 )�connr � r �Q/opt/hc_python/lib/python3.8/site-packages/pip/_vendor/urllib3/util/connection.py�is_connection_dropped s r c C s4 | \}}|� d�r |�d�}d}t� }z|�d� W n( tk r\ t�td| �d� Y S X t� |||tj �D ]�}|\} } } } } d}zNt�| | | �}t ||� |tj k r�|� |� |r�|�|� |�| � |W S tjk �r } z |}|dk �r|�� d}W 5 d}~X Y qpX qp|dk �r&|�t�d��dS )ak 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:`socket.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[]N�idnaz '%s', label empty or too longz!getaddrinfo returns an empty list)� startswith�strip�allowed_gai_family�encode� UnicodeErrorr � raise_fromr �socket� getaddrinfo� SOCK_STREAM�_set_socket_options�_GLOBAL_DEFAULT_TIMEOUT� settimeout�bind�connect�error�close)�addressr �source_address�socket_options�host�port�err�family�res�af�socktype�proto� canonname�sar �er r r �create_connection% s@ � r1 c C s$ |d kr d S |D ]}| j |� qd S )N)� setsockopt)r �options�optr r r r d 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 �AF_INET�HAS_IPV6� AF_UNSPEC)r) r r r r l s r c C sb d}d}t �� rdS tjrRz"t�tj�}|�| df� d}W n tk rP Y nX |r^|�� |S )z4Returns True if the system can bind an IPv6 address.NFr T)r �is_appengine_sandboxr �has_ipv6�AF_INET6r � Exceptionr" )r& r r9 r r r � _has_ipv6w s r< z::1)� __future__r r �contribr � exceptionsr �packagesr �waitr r r r r1 r r r< r6 r r r r �<module> s � ?