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    —ùij  ã                   @  sÔ   d dl mZ d dlZd dlZddlmZ ddlmZmZ ej	ej
eeejeef f  ZejrjddlmZ dd	d
œdd„Zeddfddddddœdd„Zddddœdd„Zddœdd„Zdd	dœdd „Zed!ƒZdS )"é    )ÚannotationsNé   )ÚLocationParseErroré   )Ú_DEFAULT_TIMEOUTÚ_TYPE_TIMEOUT)ÚBaseHTTPConnectionr   Úbool)ÚconnÚreturnc                 C  s   | j  S )z�
    Returns True if the connection is dropped and should be closed.
    :param conn: :class:`urllib3.connection.HTTPConnection` object.
    )Zis_connected)r
   © r   ú;/tmp/pip-unpacked-wheel-z24cd2a5/urllib3/util/connection.pyÚis_connection_dropped   s    r   ztuple[str, int]r   ztuple[str, int] | Nonez_TYPE_SOCKET_OPTIONS | Nonezsocket.socket)ÚaddressÚtimeoutÚsource_addressÚsocket_optionsr   c                 C  s:  | \}}|  d¡r| d¡}d}tƒ }z| d¡ W n& tk
rZ   td|› d�ƒd‚Y nX t |||tj¡D ]¢}|\}	}
}}}d}zPt |	|
|¡}t	||ƒ |t
k	r°| |¡ |r¾| |¡ | |¡ d}|W   S  tk
�r } z|}|dk	� rþ| ¡  W 5 d}~X Y qnX qn|dk	�r.z|‚W 5 d}X ntdƒ‚dS )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.
    ú[z[]NÚidnaú'z', label empty or too longz!getaddrinfo returns an empty list)Ú
startswithÚstripÚallowed_gai_familyÚencodeÚUnicodeErrorr   ÚsocketÚgetaddrinfoÚSOCK_STREAMÚ_set_socket_optionsr   Ú
settimeoutÚbindÚconnectÚOSErrorÚclose)r   r   r   r   ÚhostÚportÚerrÚfamilyÚresÚafÚsocktypeÚprotoÚ	canonnameÚsaÚsockÚ_r   r   r   Úcreate_connection   s>    








r0   ÚNone)r.   Úoptionsr   c                 C  s$   |d krd S |D ]}| j |Ž  qd S )N)Ú
setsockopt)r.   r2   Úoptr   r   r   r   ]   s    r   zsocket.AddressFamily)r   c                  C  s   t j} trt j} | S )z³This function is designed to work in the context of
    getaddrinfo, where family=socket.AF_UNSPEC is the default and
    will perform a DNS search for both IPv6 and IPv4 records.)r   ÚAF_INETÚHAS_IPV6Ú	AF_UNSPEC)r'   r   r   r   r   g   s    r   Ústr)r$   r   c                 C  sV   d}d}t jrFz"t   t j¡}| | df¡ d}W n tk
rD   Y nX |rR| ¡  |S )z4Returns True if the system can bind an IPv6 address.NFr   T)r   Úhas_ipv6ÚAF_INET6r    Ú	Exceptionr#   )r$   r.   r9   r   r   r   Ú	_has_ipv6r   s    r<   z::1)Ú
__future__r   r   ÚtypingÚ
exceptionsr   r   r   r   ÚListÚTupleÚintÚUnionÚbytesZ_TYPE_SOCKET_OPTIONSÚTYPE_CHECKINGZ_base_connectionr   r   r0   r   r   r<   r6   r   r   r   r   Ú<module>   s     üB
