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편집 파일: response.cpython-36.pyc
3 �PfwY � @ s d dl mZ d dlmZ d dlZd dlZd dlZd dlmZ d dlm Z ddl m Z ddlmZmZmZmZmZmZmZ dd lmZmZmZ dd lm Z dd l m Z m Z dd l!m"Z"m#Z# ej$e%�Z&G d d� de'�Z(G dd� de'�Z)dd� Z*G dd� dej+�Z,dS )� )�absolute_import)�contextmanagerN)�timeout)�error� )�HTTPHeaderDict)�BodyNotHttplibCompatible� ProtocolError� DecodeError�ReadTimeoutError�ResponseNotChunked�IncompleteRead� InvalidHeader)� string_types� binary_type�PY3)� http_client)� HTTPException� BaseSSLError)� is_fp_closed�is_response_to_headc @ s$ e Zd Zdd� Zdd� Zdd� ZdS )�DeflateDecoderc C s d| _ t� | _tj� | _d S )NT)� _first_tryr �_data�zlib� decompressobj�_obj)�self� r � /usr/lib/python3.6/response.py�__init__ s zDeflateDecoder.__init__c C s t | j|�S )N)�getattrr )r �namer r r � __getattr__ s zDeflateDecoder.__getattr__c C s� |s|S | j s| jj|�S | j|7 _y | jj|�}|rFd| _ d | _|S tjk r� d| _ tjtj �| _z | j| j�S d | _X Y nX d S )NF)r r � decompressr r r r � MAX_WBITS)r �dataZ decompressedr r r r$ s" zDeflateDecoder.decompressN)�__name__� __module__� __qualname__r r# r$ r r r r r s r c @ s$ e Zd Zdd� Zdd� Zdd� ZdS )� GzipDecoderc C s t jdt j �| _d S )N� )r r r% r )r r r r r 9 s zGzipDecoder.__init__c C s t | j|�S )N)r! r )r r" r r r r# < s zGzipDecoder.__getattr__c C s |s|S | j j|�S )N)r r$ )r r& r r r r$ ? s zGzipDecoder.decompressN)r' r( r) r r# r$ r r r r r* 7 s r* c C s | dkrt � S t� S )N�gzip)r* r )�moder r r � _get_decoderE s r. c @ s e Zd ZdZddgZdddddgZdFdd�Zdd� Zdd� Ze dd� �Z e dd� �Z dd� Z dd� Z d d � Zd d � Zd d!� Zed"d#� �ZdGd$d%�ZdId(d)�Zed*d+� �Zd,d-� ZdJd.d/�Zd0d1� Zd2d3� Ze d4d5� �Zd6d7� Z d8d9� Z d:d;� Z d<d=� Z d>d?� Z d@dA� Z!dBdC� Z"dKdDdE�Z#d S )L� HTTPResponsea HTTP Response container. Backwards-compatible to httplib's HTTPResponse but the response ``body`` is loaded and decoded on-demand when the ``data`` property is accessed. This class is also compatible with the Python standard library's :mod:`io` module, and can hence be treated as a readable object in the context of that framework. Extra parameters for behaviour not present in httplib.HTTPResponse: :param preload_content: If True, the response's body will be preloaded during construction. :param decode_content: If True, attempts to decode specific content-encoding's based on headers (like 'gzip' and 'deflate') will be skipped and raw data will be used instead. :param original_response: When this HTTPResponse wrapper is generated from an httplib.HTTPResponse object, it's convenient to include the original for debug purposes. It's otherwise unused. :param retries: The retries contains the last :class:`~urllib3.util.retry.Retry` that was used during the request. :param enforce_content_length: Enforce content length checking. Body returned by server must match value of Content-Length header, if present. Otherwise, raise error. r, Zdeflatei- i. i/ i3 i4 � Nr TFc C s t |t�r|| _n t|�| _|| _|| _|| _|| _|| _| | _| | _ d | _ d | _ d | _ | | _ d| _|r|t |ttf�r||| _ | | _| | _t|d�r�|| _ d| _d | _| jjdd�j� }dd� |jd�D �}d |kr�d | _| j|�| _|r�| j r�| j|d �| _ d S ) Nr �readFztransfer-encodingr0 c s s | ]}|j � V qd S )N)�strip)�.0�encr r r � <genexpr>� s z(HTTPResponse.__init__.<locals>.<genexpr>�,�chunkedT)�decode_content) � isinstancer �headers�status�version�reason�strictr8 �retries�enforce_content_length�_decoder�_body�_fp�_original_response�_fp_bytes_read� basestringr �_pool� _connection�hasattrr7 � chunk_left�get�lower�split� _init_length�length_remainingr1 )r �bodyr: r; r< r= r> Zpreload_contentr8 �original_responseZpool� connectionr? r@ �request_methodZtr_encZ encodingsr r r r q s< zHTTPResponse.__init__c C s | j | jkr| jjd�S dS )a Should we redirect and where to? :returns: Truthy redirect location string if we got a redirect status code and valid location. ``None`` if redirect status and no location. ``False`` if not a redirect status code. �locationF)r; �REDIRECT_STATUSESr: rK )r r r r �get_redirect_location� s z"HTTPResponse.get_redirect_locationc C s, | j s| j rd S | j j| j� d | _d S )N)rG rH Z _put_conn)r r r r � release_conn� s zHTTPResponse.release_connc C s" | j r | j S | jr | jdd�S d S )NT)� cache_content)rB rC r1 )r r r r r& � s zHTTPResponse.datac C s | j S )N)rH )r r r r rR � s zHTTPResponse.connectionc C s | j S )z� Obtain the number of bytes pulled over the wire so far. May differ from the amount of content returned by :meth:``HTTPResponse.read`` if bytes are encoded on the wire (e.g, compressed). )rE )r r r r �tell� s zHTTPResponse.tellc C s� | j jd�}|dk r(| jr(tjd� dS |dk r�y<tdd� |jd�D ��}t|�dkrbtd| ��|j � }W n t k r� d}Y nX |d k r�d}yt | j �}W n t k r� d }Y nX |dks�d | ko�d k n s�|dkr�d }|S )zM Set initial length value for Response content if available. zcontent-lengthNz�Received response with both Content-Length and Transfer-Encoding set. This is expressly forbidden by RFC 7230 sec 3.3.2. Ignoring Content-Length and attempting to process response as Transfer-Encoding: chunked.c S s g | ] }t |��qS r )�int)r3 �valr r r � <listcomp>� s z-HTTPResponse._init_length.<locals>.<listcomp>r6 r z8Content-Length contained multiple unmatching values (%s)r �� �0 �d �� ZHEAD)r] r^ ) r: rK r7 �logZwarning�setrM �lenr �pop� ValueErrorrZ r; )r rS ZlengthZlengthsr; r r r rN � s, (zHTTPResponse._init_lengthc C s4 | j jdd�j� }| jdkr0|| jkr0t|�| _dS )z= Set-up the _decoder attribute if necessary. zcontent-encodingr0 N)r: rK rL rA �CONTENT_DECODERSr. )r �content_encodingr r r � _init_decoder� s zHTTPResponse._init_decoderc C s| y|r| j r| j j|�}W nH ttjfk rb } z&| jjdd�j� }td| |��W Y dd}~X nX |rx|rx|| j � 7 }|S )zN Decode the data passed in and potentially flush the decoder. zcontent-encodingr0 zEReceived response with content-encoding: %s, but failed to decode it.N) rA r$ �IOErrorr r r: rK rL r �_flush_decoder)r r& r8 � flush_decoder�erg r r r �_decode s zHTTPResponse._decodec C s$ | j r | j jd�}|| j j� S dS )zk Flushes the decoder. Should only be called if the decoder is actually being used. � )rA r$ �flush)r Zbufr r r rj s zHTTPResponse._flush_decoderc c s� d}z�y dV W n� t k r2 t| jdd��Y np tk rn } z"dt|�krP� t| jdd��W Y dd}~X n4 ttfk r� } ztd| |��W Y dd}~X nX d}W d|s�| jr�| jj � | j r�| j j � | jr�| jj � r�| j � X dS )z� Catch low-level python exceptions, instead re-raising urllib3 variants, so that low-level exceptions are not leaked in the high-level api. On exit, release the connection back to the pool. FNzRead timed out.zread operation timed outzConnection broken: %rT) � SocketTimeoutr rG r �strr � SocketErrorr rD �closerH �isclosedrW )r Z clean_exitrl r r r �_error_catcher! s( zHTTPResponse._error_catcherc C s� | j � |dkr| j}| jdkr$dS d}d}| j� �h |dkrN| jj� }d}nJd}| jj|�}|dkr�| r�| jj� d}| jr�| jdkr�t| j | j��W dQ R X |r�| j t |�7 _ | jdk r�| jt |�8 _| j |||�}|r�|| _ |S )aP Similar to :meth:`httplib.HTTPResponse.read`, but with two additional parameters: ``decode_content`` and ``cache_content``. :param amt: How much of the content to read. If specified, caching is skipped because it doesn't make sense to cache partial content as the full response. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. :param cache_content: If True, will save the returned data such that the same result is returned despite of the state of the underlying file object. This is useful if you want the ``.data`` property to continue working after having ``.read()`` the file object. (Overridden if ``amt`` is set.) NFTr )r N) rh r8 rC ru r1 rs r@ rO r rE rc rm rB )r �amtr8 rX rk r& r r r r1 Z s4 zHTTPResponse.read� r+ c c sZ | j r.| j� r.xF| j||d�D ] }|V q W n(x&t| j�sT| j||d�}|r0|V q0W dS )a_ A generator wrapper for the read() method. A call will block until ``amt`` bytes have been read from the connection or until the connection is closed. :param amt: How much of the content to read. The generator will return up to much data per iteration, but may return less. This is particularly likely when using compressed data. However, the empty string will never be returned. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. )r8 )rv r8 N)r7 �supports_chunked_reads� read_chunkedr rC r1 )r rv r8 �liner& r r r �stream� s zHTTPResponse.streamc K s` |j }t|t�s,tr"t|j� �}n tj|�}t|dd�}| f |||j|j|j ||d�|��}|S )a Given an :class:`httplib.HTTPResponse` instance ``r``, return a corresponding :class:`urllib3.response.HTTPResponse` object. Remaining parameters are passed to the HTTPResponse constructor, along with ``original_response=r``. r> r )rP r: r; r< r= r> rQ ) �msgr9 r r �items� from_httplibr! r; r< r= )Z ResponseCls�rZ response_kwr: r> Zrespr r r r~ � s zHTTPResponse.from_httplibc C s | j S )N)r: )r r r r � getheaders� s zHTTPResponse.getheadersc C s | j j||�S )N)r: rK )r r" �defaultr r r � getheader� s zHTTPResponse.getheaderc C s | j S )N)r: )r r r r �info� s zHTTPResponse.infoc C s$ | j s| jj� | jr | jj� d S )N)�closedrC rs rH )r r r r rs � s zHTTPResponse.closec C s@ | j d krdS t| j d�r$| j j� S t| j d�r8| j jS dS d S )NTrt r� )rC rI rt r� )r r r r r� � s zHTTPResponse.closedc C s6 | j d krtd��n t| j d�r*| j j� S td��d S )Nz-HTTPResponse has no file to get a fileno from�filenozOThe file-like object this HTTPResponse is wrapped around has no file descriptor)rC ri rI r� )r r r r r� � s zHTTPResponse.filenoc C s$ | j d k r t| j d�r | j j� S d S )Nro )rC rI ro )r r r r ro � s zHTTPResponse.flushc C s dS )NTr )r r r r �readable s zHTTPResponse.readablec C s: | j t|��}t|�dkr dS ||d t|��< t|�S d S )Nr )r1 rc )r �bZtempr r r �readinto s zHTTPResponse.readintoc C s t | jd�S )z� Checks if the underlying file-like object looks like a httplib.HTTPResponse object. 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If it is present we assume it returns raw chunks as processed by read_chunked(). �fp)rI rC )r r r r rx s z#HTTPResponse.supports_chunked_readsc C sf | j d k rd S | jjj� }|jdd�d }yt|d�| _ W n& tk r` | j� tj |��Y nX d S )N� ;r r r+ ) rJ rC r� �readlinerM rZ re rs �httplibr )r rz r r r �_update_chunk_length s z!HTTPResponse._update_chunk_lengthc C s� d }|d kr2| j j| j�}|}| j jd� d | _nv|| jk rZ| j j|�}| j| | _|}nN|| jkr�| j j|�}| j jd� d | _|}n | j j| j�}| j jd� d | _|S )Nrw )rC Z _safe_readrJ )r rv Zreturned_chunk�chunk�valuer r r � _handle_chunk% s& zHTTPResponse._handle_chunkc c s� | j � | jstd��| j� s&td��| jrDt| j�rD| jj� dS | j� �� x<| j � | j dkrdP | j |�}| j ||dd�}|rP|V qPW |r�| j � }|r�|V x | jjj� }|s�P |dkr�P q�W | jr�| jj� W dQ R X dS )z� Similar to :meth:`HTTPResponse.read`, but with an additional parameter: ``decode_content``. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. zHResponse is not chunked. Header 'transfer-encoding: chunked' is missing.zgBody should be httplib.HTTPResponse like. It should have have an fp attribute which returns raw chunks.Nr F)r8 rk s )rh r7 r rx r rD r rs ru r� rJ r� rm rj rC r� r� )r rv r8 r� Zdecodedrz r r r ry ; s@ zHTTPResponse.read_chunked)r0 Nr r Nr TTNNNNFN)NNF� )r� N)N)NN)$r' r( r) �__doc__rf rU r rV rW �propertyr& rR rY rN rh rm rj r ru r1 r{ � classmethodr~ r� r� r� rs r� r� ro r� r� rx r� r� ry r r r r r/ L sB - 0 9 E r/ )-Z __future__r � contextlibr r �ioZloggingZsocketr rp r rr � _collectionsr � exceptionsr r r r r r r Z packages.sixr rF r r Zpackages.six.movesr r� rR r r Z util.responser r Z getLoggerr' ra �objectr r* r. �IOBaser/ r r r r �<module> s" $ !