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편집 파일: connectionpool.cpython-36.pyc
3 h��f@� � @ s� d dl mZ d dlZd dlZd dlZd dlZd dlmZm Z d dlZddl m Z m Z mZmZmZmZmZmZmZmZmZmZmZ ddlmZ ddlm Z ddl m Z dd l m Z m!Z!m"Z"m#Z#m$Z$m%Z%m&Z& dd l'm(Z( dd l)m*Z* dd l+m,Z, dd l-m.Z. ddl/m0Z0 ddl1m2Z2 ddl3m4Z4 ddl5m6Z6 ddl7m8Z8m9Z9m:Z: ddl;m<Z< e j=j>Z>ej?e@�ZAeB� ZCG dd� deB�ZDejEejFhZGG dd� deDe*�ZHG dd� deH�ZIdd� ZJd d � ZKdS ) � )�absolute_importN)�error�timeout� ) �ClosedPoolError� ProtocolError�EmptyPoolError�HeaderParsingError�HostChangedError�LocationValueError� MaxRetryError� ProxyError�ReadTimeoutError�SSLError� TimeoutError�InsecureRequestWarning�NewConnectionError)�CertificateError)�six)�queue)�port_by_scheme�DummyConnection�HTTPConnection�HTTPSConnection�VerifiedHTTPSConnection� HTTPException� BaseSSLError)�HTTPHeaderDict)�RequestMethods)� HTTPResponse)�is_connection_dropped)�set_file_position)�assert_header_parsing)�Retry)�Timeout)�get_host�Url�NORMALIZABLE_SCHEMES)� LifoQueuec @ sB e Zd ZdZdZeZd dd�Zdd� Zdd� Z d d � Z d d � Z dS )�ConnectionPoolzz Base class for all connection pools, such as :class:`.HTTPConnectionPool` and :class:`.HTTPSConnectionPool`. Nc C s. |s t d��t|| j�| _|j� | _|| _d S )NzNo host specified.)r � _ipv6_host�scheme�host�lower� _proxy_host�port)�selfr, r/ � r1 �$/usr/lib/python3.6/connectionpool.py�__init__A s zConnectionPool.__init__c C s dt | �j| j| jf S )Nz%s(host=%r, port=%r))�type�__name__r, r/ )r0 r1 r1 r2 �__str__I s zConnectionPool.__str__c C s | S )Nr1 )r0 r1 r1 r2 � __enter__M s zConnectionPool.__enter__c C s | j � dS )NF)�close)r0 �exc_typeZexc_valZexc_tbr1 r1 r2 �__exit__P s zConnectionPool.__exit__c C s dS )zD Close all pooled connections and disable the pool. Nr1 )r0 r1 r1 r2 r8 U s zConnectionPool.close)N) r5 � __module__� __qualname__�__doc__r+ r( �QueueClsr3 r6 r7 r: r8 r1 r1 r1 r2 r) 8 s r) c @ s� e Zd ZdZdZeZeZdde j ddddddf dd�Z dd � Z d!d d �Z d d � Zdd� Zdd� Zdd� Zdd� Zedfdd�Zdd� Zdd� Zd d � Zdddd d eddddf d d �ZdS )"�HTTPConnectionPoolaN Thread-safe connection pool for one host. :param host: Host used for this HTTP Connection (e.g. "localhost"), passed into :class:`httplib.HTTPConnection`. :param port: Port used for this HTTP Connection (None is equivalent to 80), passed into :class:`httplib.HTTPConnection`. :param strict: Causes BadStatusLine to be raised if the status line can't be parsed as a valid HTTP/1.0 or 1.1 status line, passed into :class:`httplib.HTTPConnection`. .. note:: Only works in Python 2. This parameter is ignored in Python 3. :param timeout: Socket timeout in seconds for each individual connection. This can be a float or integer, which sets the timeout for the HTTP request, or an instance of :class:`urllib3.util.Timeout` which gives you more fine-grained control over request timeouts. After the constructor has been parsed, this is always a `urllib3.util.Timeout` object. :param maxsize: Number of connections to save that can be reused. More than 1 is useful in multithreaded situations. If ``block`` is set to False, more connections will be created but they will not be saved once they've been used. :param block: If set to True, no more than ``maxsize`` connections will be used at a time. When no free connections are available, the call will block until a connection has been released. This is a useful side effect for particular multithreaded situations where one does not want to use more than maxsize connections per host to prevent flooding. :param headers: Headers to include with all requests, unless other headers are given explicitly. :param retries: Retry configuration to use by default with requests in this pool. :param _proxy: Parsed proxy URL, should not be used directly, instead, see :class:`urllib3.connectionpool.ProxyManager`" :param _proxy_headers: A dictionary with proxy headers, should not be used directly, instead, see :class:`urllib3.connectionpool.ProxyManager`" :param \**conn_kw: Additional parameters are used to create fresh :class:`urllib3.connection.HTTPConnection`, :class:`urllib3.connection.HTTPSConnection` instances. �httpNFr c K s� t j| ||� tj| |� || _t|t�s4tj|�}|d krBtj}|| _ || _ | j |�| _ || _ | | _| pli | _x t|�D ]} | j jd � qzW d| _d| _| | _| jr�| jjdg � d S )Nr Zsocket_options)r) r3 r �strict� isinstancer$ � from_floatr# ZDEFAULTr �retriesr> �pool�block�proxy� proxy_headers�xrange�put�num_connections� num_requests�conn_kw� setdefault) r0 r, r/ rA r �maxsizerF �headersrD �_proxy�_proxy_headersrM �_r1 r1 r2 r3 � s( zHTTPConnectionPool.__init__c C sR | j d7 _ tjd| j | j| jp$d� | jf | j| j| jj| jd�| j ��}|S )z9 Return a fresh :class:`HTTPConnection`. r z(Starting new HTTP connection (%d): %s:%sZ80)r, r/ r rA ) rK �log�debugr, r/ � ConnectionClsr �connect_timeoutrA rM )r0 �connr1 r1 r2 � _new_conn� s z HTTPConnectionPool._new_connc C s� d}y| j j| j|d�}W nB tk r8 t| d��Y n& tjk r\ | jrXt| d��Y nX |r�t|�r�t j d| j � |j � t |dd�dkr�d}|p�| j� S ) a� Get a connection. Will return a pooled connection if one is available. If no connections are available and :prop:`.block` is ``False``, then a fresh connection is returned. :param timeout: Seconds to wait before giving up and raising :class:`urllib3.exceptions.EmptyPoolError` if the pool is empty and :prop:`.block` is ``True``. N)rF r zPool is closed.z>Pool reached maximum size and no more connections are allowed.z Resetting dropped connection: %sZ auto_openr r )rE �getrF �AttributeErrorr r �Emptyr r rT rU r, r8 �getattrrY )r0 r rX r1 r1 r2 � _get_conn� s z HTTPConnectionPool._get_connc C s\ y| j j|dd� dS tk r( Y n$ tjk rJ tjd| j� Y nX |rX|j� dS )a� Put a connection back into the pool. :param conn: Connection object for the current host and port as returned by :meth:`._new_conn` or :meth:`._get_conn`. If the pool is already full, the connection is closed and discarded because we exceeded maxsize. If connections are discarded frequently, then maxsize should be increased. If the pool is closed, then the connection will be closed and discarded. F)rF Nz2Connection pool is full, discarding connection: %s) rE rJ r[ r ZFullrT �warningr, r8 )r0 rX r1 r1 r2 � _put_conn� s z HTTPConnectionPool._put_connc C s dS )zU Called right before a request is made, after the socket is created. Nr1 )r0 rX r1 r1 r2 �_validate_conn s z!HTTPConnectionPool._validate_connc C s d S )Nr1 )r0 rX r1 r1 r2 �_prepare_proxy s z!HTTPConnectionPool._prepare_proxyc C s2 |t kr| jj� S t|t�r$|j� S tj|�S dS )z< Helper that always returns a :class:`urllib3.util.Timeout` N)�_Defaultr ZclonerB r$ rC )r0 r r1 r1 r2 � _get_timeout# s z HTTPConnectionPool._get_timeoutc C sj t |t�rt| |d| ��t|d�r>|jtkr>t| |d| ��dt|�ksVdt|�krft| |d| ��dS )zAIs the error actually a timeout? Will raise a ReadTimeout or passz!Read timed out. (read timeout=%s)�errnoz timed outzdid not complete (read)N)rB � SocketTimeoutr �hasattrre �_blocking_errnos�str)r0 �err�url� timeout_valuer1 r1 r2 �_raise_timeout/ s z!HTTPConnectionPool._raise_timeoutc : K s | j d7 _ | j|�}|j� |j|_y| j|� W n: ttfk rp } z| j|||jd� � W Y dd}~X nX |r�|j ||f|� n|j ||f|� |j } t |dd�r�| dkr�t | |d| ��| tjkr�|jjtj� � n |jj| � yjy|jdd�} W nT tk �rP y |j� } W n0 tk �rJ } ztj|d� W Y dd}~X nX Y nX W n< tttfk �r� } z| j||| d� � W Y dd}~X nX t |d d �} tjd | j | j | j ||| | j | j � yt!| j"� W n@ t#tfk �r } z tj$d | j%|�| dd � W Y dd} ~ X nX | S )a Perform a request on a given urllib connection object taken from our pool. :param conn: a connection from one of our connection pools :param timeout: Socket timeout in seconds for the request. 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NF)rF )rE rZ r8 r r\ )r0 Zold_poolrX r1 r1 r2 r8 � s zHTTPConnectionPool.closec C st |j d�rdS t|�\}}}t|| j�}| jr@| r@tj|�}n| j rZ|tj|�krZd}|||f| j| j| jfkS )zj Check if the given ``url`` is a member of the same host as this connection pool. �/TN)� startswithr% r* r+ r/ r rZ r, )r0 rk r+ r, r/ r1 r1 r2 � is_same_host� s z HTTPConnectionPool.is_same_hostTc . K s� |dkr| j }t|t�s*tj||| jd�}| dkr>| jdd�} |rZ| j|� rZt| ||��d}| }| jdkr�|j � }|j | j � d}d}t || �} �zry�| j |�}| j| d�}|j|_| jdk o�t|dd� }|r�| j|� | j||||||| d �}| � s�|nd}|| d < | jj|f| ||d �| ��}d}W n� tjk �rN t| d ��Y n� ttt t t t t fk �r } z�d}t|t t f��r�t |�}n>t|t t!f��r�| j�r�t"d |�}nt|t tf��r�t d|�}|j#|||| t$j%� d d�}|j&� |}W Y dd}~X nX W d|�s |�o|j'� }d}|�r0| j(|� X |�spt)j*d|||� | j+|||||||f|| | | d�| ��S dd� }|�o�|j,� }|�r4|j-dk�r�d}d}t.|�j/� }y|j#|||| d�}W n( t0k �r� |j1�r�||� � |S X ||� |j2|� t)j3d||� | j+||||f||||| | | d�| ��S t4|j5d��}|j6||j-|��r�y|j#|||| d�}W n( t0k �r� |j7�r�||� � |S X ||� |j&|� t)j3d|� | j+||||f||||| | | d�| ��S |S ) a� Get a connection from the pool and perform an HTTP request. This is the lowest level call for making a request, so you'll need to specify all the raw details. .. note:: More commonly, it's appropriate to use a convenience method provided by :class:`.RequestMethods`, such as :meth:`request`. .. note:: `release_conn` will only behave as expected if `preload_content=False` because we want to make `preload_content=False` the default behaviour someday soon without breaking backwards compatibility. :param method: HTTP request method (such as GET, POST, PUT, etc.) :param body: Data to send in the request body (useful for creating POST requests, see HTTPConnectionPool.post_url for more convenience). :param headers: Dictionary of custom headers to send, such as User-Agent, If-None-Match, etc. If None, pool headers are used. If provided, these headers completely replace any pool-specific headers. :param retries: Configure the number of retries to allow before raising a :class:`~urllib3.exceptions.MaxRetryError` exception. Pass ``None`` to retry until you receive a response. Pass a :class:`~urllib3.util.retry.Retry` object for fine-grained control over different types of retries. Pass an integer number to retry connection errors that many times, but no other types of errors. Pass zero to never retry. If ``False``, then retries are disabled and any exception is raised immediately. Also, instead of raising a MaxRetryError on redirects, the redirect response will be returned. :type retries: :class:`~urllib3.util.retry.Retry`, False, or an int. :param redirect: If True, automatically handle redirects (status codes 301, 302, 303, 307, 308). Each redirect counts as a retry. Disabling retries will disable redirect, too. :param assert_same_host: If ``True``, will make sure that the host of the pool requests is consistent else will raise HostChangedError. When False, you can use the pool on an HTTP proxy and request foreign hosts. :param timeout: If specified, overrides the default timeout for this one request. It may be a float (in seconds) or an instance of :class:`urllib3.util.Timeout`. :param pool_timeout: If set and the pool is set to block=True, then this method will block for ``pool_timeout`` seconds and raise EmptyPoolError if no connection is available within the time period. :param release_conn: If False, then the urlopen call will not release the connection back into the pool once a response is received (but will release if you read the entire contents of the response such as when `preload_content=True`). This is useful if you're not preloading the response's content immediately. You will need to call ``r.release_conn()`` on the response ``r`` to return the connection back into the pool. If None, it takes the value of ``response_kw.get('preload_content', True)``. :param chunked: If True, urllib3 will send the body using chunked transfer encoding. Otherwise, urllib3 will send the body using the standard content-length form. Defaults to False. :param int body_pos: Position to seek to in file-like body in the event of a retry or redirect. 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When Python is compiled with the :mod:`ssl` module, then :class:`.VerifiedHTTPSConnection` is used, which *can* verify certificates, instead of :class:`.HTTPSConnection`. :class:`.VerifiedHTTPSConnection` uses one of ``assert_fingerprint``, ``assert_hostname`` and ``host`` in this order to verify connections. If ``assert_hostname`` is False, no verification is done. The ``key_file``, ``cert_file``, ``cert_reqs``, ``ca_certs``, ``ca_cert_dir``, and ``ssl_version`` are only used if :mod:`ssl` is available and are fed into :meth:`urllib3.util.ssl_wrap_socket` to upgrade the connection socket into an SSL socket. �httpsNFr c K sf t j| ||||||||| | f |� |r2| d kr2d} | | _| | _| | _|| _|| _|| _|| _|| _ d S )NZ CERT_REQUIRED) r? r3 �key_file� cert_file� cert_reqs�ca_certs� ca_cert_dir� ssl_version�assert_hostname�assert_fingerprint)r0 r, r/ rA r rO rF rP rD rQ rR r� r� r� r� r� r� r� r� rM r1 r1 r2 r3 � s z HTTPSConnectionPool.__init__c C s< t |t�r8|j| j| j| j| j| j| j| j d� | j |_ |S )z� Prepare the ``connection`` for :meth:`urllib3.util.ssl_wrap_socket` and establish the tunnel if proxy is used. )r� r� r� r� r� r� r� ) rB r Zset_certr� r� r� r� r� r� r� r� )r0 rX r1 r1 r2 � _prepare_conn s z!HTTPSConnectionPool._prepare_connc C s |j | j| j| j� |j� dS )z� Establish tunnel connection early, because otherwise httplib would improperly set Host: header to proxy's IP:port. N)Z set_tunnelr. r/ rH �connect)r0 rX r1 r1 r2 rb $ s z"HTTPSConnectionPool._prepare_proxyc C s� | j d7 _ tjd| j | j| jp$d� | j s:| jtkrBtd��| j}| j}| jdk rh| jj}| jj}| jf ||| j j | j d�| j ��}| j |�S )zB Return a fresh :class:`httplib.HTTPSConnection`. r z)Starting new HTTPS connection (%d): %s:%sZ443zCCan't connect to HTTPS URL because the SSL module is not available.N)r, r/ r rA )rK rT rU r, r/ rV r r rG r rW rA rM r� )r0 Z actual_hostZ actual_portrX r1 r1 r2 rY , s z HTTPSConnectionPool._new_connc s: t t| �j|� t|dd�s$|j� |js6tjdt� dS )zU Called right before a request is made, after the socket is created. rn Nz�Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings) �superr� ra r] r� Z is_verified�warnings�warnr )r0 rX )� __class__r1 r2 ra D s z"HTTPSConnectionPool._validate_conn)r5 r; r< r= r+ r rV r$ rs r3 r� rb rY ra � __classcell__r1 r1 )r� r2 r� � s r� c K sR t | �\}}}|p tj|d�}|dkr:t|fd|i|��S t|fd|i|��S dS )a� Given a url, return an :class:`.ConnectionPool` instance of its host. This is a shortcut for not having to parse out the scheme, host, and port of the url before creating an :class:`.ConnectionPool` instance. :param url: Absolute URL string that must include the scheme. Port is optional. :param \**kw: Passes additional parameters to the constructor of the appropriate :class:`.ConnectionPool`. 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