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This should be a namedtuple with the ``scheme`` and ``host`` keys at a minimum. :type key_class: namedtuple :param request_context: A dictionary-like object that contain the context for a request. :type request_context: dict :return: A namedtuple that can be used as a connection pool key. :rtype: PoolKey �scheme�host)�headers�_proxy_headersZ_socks_optionsNZsocket_optionsZkey_) �copy�lower� frozenset�items�get�tuple�list�keys�pop�_fields)Z key_class�request_context�context�keyZ socket_optsZfield� r% �C/usr/lib/python3.8/site-packages/pip/_vendor/urllib3/poolmanager.py�_default_key_normalizerD s r' ��http�httpsc @ sx e Zd ZdZdZd dd�Zdd� Zdd � Zd d d �Zd d � Z d dd�Z dd� Z d dd�Z d dd�Z dd� Zd!dd�ZdS )"r a$ Allows for arbitrary requests while transparently keeping track of necessary connection pools for you. :param num_pools: Number of connection pools to cache before discarding the least recently used pool. :param headers: Headers to include with all requests, unless other headers are given explicitly. :param \**connection_pool_kw: Additional parameters are used to create fresh :class:`urllib3.connectionpool.ConnectionPool` instances. Example:: >>> manager = PoolManager(num_pools=2) >>> r = manager.request('GET', 'http://google.com/') >>> r = manager.request('GET', 'http://google.com/mail') >>> r = manager.request('GET', 'http://yahoo.com/') >>> len(manager.pools) 2 N� c K s8 t �| |� || _t|dd� d�| _t| _t�� | _d S )Nc S s | � � S �N)�close)�pr% r% r& �<lambda>� � z&PoolManager.__init__.<locals>.<lambda>)Z dispose_func)r �__init__�connection_pool_kwr �pools�pool_classes_by_scheme�key_fn_by_schemer )�self� num_poolsr r2 r% r% r& r1 � s zPoolManager.__init__c C s | S r, r% �r6 r% r% r& � __enter__� s zPoolManager.__enter__c C s | � � dS )NF)�clear)r6 �exc_typeZexc_valZexc_tbr% r% r& �__exit__� s zPoolManager.__exit__c C s^ | j | }|dkr | j�� }dD ]}|�|d� q |dkrPtD ]}|�|d� q>|||f|�S )a� Create a new :class:`ConnectionPool` based on host, port, scheme, and any additional pool keyword arguments. If ``request_context`` is provided, it is provided as keyword arguments to the pool class used. This method is used to actually create the connection pools handed out by :meth:`connection_from_url` and companion methods. It is intended to be overridden for customization. N)r r �portr) )r4 r2 r r � SSL_KEYWORDS)r6 r r r= r" Zpool_clsr$ �kwr% r% r& � _new_pool� s zPoolManager._new_poolc C s | j �� dS )z� Empty our store of pools and direct them all to close. This will not affect in-flight connections, but they will not be re-used after completion. N)r3 r: r8 r% r% r& r: � s zPoolManager.clearr) c C sT |s t d��| �|�}|p d|d< |s:t�|d �� d�}||d< ||d< | �|�S )a� Get a :class:`ConnectionPool` based on the host, port, and scheme. If ``port`` isn't given, it will be derived from the ``scheme`` using ``urllib3.connectionpool.port_by_scheme``. 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At a minimum it must have the ``scheme``, ``host``, and ``port`` fields. r r r= rF )r3 �lockr r@ )r6 rH r" Zpoolr r r= r% r% r& rG � s z$PoolManager.connection_from_pool_keyc C s t |�}| j|j|j|j|d�S )a� Similar to :func:`urllib3.connectionpool.connection_from_url`. If ``pool_kwargs`` is not provided and a new pool needs to be constructed, ``self.connection_pool_kw`` is used to initialize the :class:`urllib3.connectionpool.ConnectionPool`. If ``pool_kwargs`` is provided, it is used instead. Note that if a new pool does not need to be created for the request, the provided ``pool_kwargs`` are not used. )r= r rD )r rE r r= r )r6 �urlrD �ur% r% r& �connection_from_url s �z PoolManager.connection_from_urlc C sV | j �� }|rR|�� D ]:\}}|dkrHz ||= W qP tk rD Y qPX q|||< q|S )a Merge a dictionary of override values for self.connection_pool_kw. This does not modify self.connection_pool_kw and returns a new dict. Any keys in the override dictionary with a value of ``None`` are removed from the merged dictionary. N)r2 r r �KeyError)r6 �overrideZbase_pool_kwargsr$ �valuer% r% r& rB ! s z PoolManager._merge_pool_kwargsTc K s� t |�}| j|j|j|jd�}d|d< d|d< d|krD| j�� |d< | jdk rj|jdkrj|j||f|�}n|j||j f|�}|o�|� � }|s�|S t ||�}|j dkr�d }|� d �} t| t�s�tj| |d �} | j�r|�|��stt�|d ��} | D ]"} | �� | jkr�|d �| d� q�z| j||||d �} W n$ tk �rR | j�rJ� | Y S X | |d < ||d< t� d ||� | j||f|�S )a] Same as :meth:`urllib3.connectionpool.HTTPConnectionPool.urlopen` with custom cross-host redirect logic and only sends the request-uri portion of the ``url``. 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ZAcceptz*/*ZHost)r �netloc�update)r6 rJ r Zheaders_re r% r% r& �_set_proxy_headers� s z ProxyManager._set_proxy_headersTc sN t |�}|jdkr0|�d| j�}| �||�|d< tt| �j||fd|i|��S )z@Same as HTTP(S)ConnectionPool.urlopen, ``url`` must be absolute.r) r rP )r r r r rg ra r rT )r6 rX rJ rP r? rK r rc r% r& rT � s zProxyManager.urlopen)r+ NN)Nr) N)N)T) rZ r[ r\ r] r1 rE rg rT � __classcell__r% r% rc r& r t s � c K s t f d| i|��S )Nrb )r )rJ r? r% r% r& r � s )(Z __future__r � collections� functoolsZlogging� _collectionsr Zconnectionpoolr r r � exceptionsr r r Zpackagesr Z packages.six.moves.urllib.parser Zrequestr Zutil.urlr Z util.retryr �__all__Z getLoggerrZ rV r> Z _key_fields� namedtupler r' �partialr5 r4 r r r r% r% r% r& �<module> s4 6 � ta
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